Hot Topic Session II: New One-Way Shear Equations for the 318 Building Code, Is it Time? (ACI Spring 2016 Convention, Milwaukee, WI)
The basic one-way shear equations in the ACI 318 Building Code have not changed since 1971, while other codes in the world have made changes. The current code consists of over 17 different equations. There have been advances in the understanding of size effect, members without transverse reinforcement, and members with the light longitudinal reinforcement. Members of Joint ACI-ASCE committees 445 and 446, and ACI Subcommittee 318-A devoted a great effort in the last two decades to investigate the effectiveness and safety of the current 318 one-way shear design equations. Immediately after the 318-14 Code cycle, the above committees challenged the researcher and practitioner community to present proposals for new one-way shear design methods that are safer and more effective for possible incorporation into the 318-19 code cycle. To date, six proposals have been submitted. These proposals were first evaluated against the existing 445 experimental shear database and then implemented in a comprehensive design example database that includes slabs, beams, and columns with prestress and non-prestress. This session will present the result summary of these evaluations and give a chance to each proposal’s author to describe the advantages of their method over the current 318-14 equations. The discussions held at this Hot Topic Session will be used by 318-E and 318 as input into their deliberations on the next step for one-way shear design for the 318-19 Building Code. This will be followed with a period of Q/A and attendees’ input and feedback on the new approaches.
- Part 1
- New Look at One-Way Shear Design Approach – ACI 318-E Initiative by David H. Sanders, University of Nevada
- Summary of ACI-ASCE 445 Activities on One-Way Shear Design Methods by Abdeldjelil Belarbi, University of Houston
- Use of Design Database to Compare Design Approaches by Daniel A. Kuchma, Tufts University
- One-Way Shear Design Method Based on a Multi-Action Model by
Antoni Cladera, University of Balearic Islands; and Antonio Marí and Jesús Bairan, Polytechnic University of Catalonia
- Part 2
- One-Way Shear Design Method – A Unified Approach by Robert J. Frosch, Purdue University; Qian Yu, University of Pittsburgh; Zdenek P. Bazant and Gianluca Cusatis, Northwestern University; Mija H. Hubler, University of Colorado, Boulder; and Jialing Le, University of Minnesota, Minneapolis
- One-Way Shear Design Method – Simplifying the ACI Shear Provisions by Evan C. Bentz, University of Toronto; and Michael P. Collins, University of Toronto
- One-Way Shear Design Method – Unified Theory by UH-NTU Version by Thomas T.C. Hsu, University of Houston; and Yi-An
Proportioning with Ground Limestone and Mineral Filler (ACI Spring Convention, April 2016, Milwaukee, WI)
This session will introduce the new document developed by ACI Subcommittee 211-N, "Guide to Proportioning Concrete Mixtures with Ground Limestone and Other Mineral Fillers," and provide case studies for ground limestone and mineral filler.
Precast Concrete Pavements (ACI Spring Convention, April 2016, Milwaukee, WI)
The production use of precast concrete pavement (PCP) has come a long way over the last 15 years. Since the first new-generation PCP projects were constructed during 2001, the technology has gained wider acceptance in the United States for rapid repair and rehabilitation of concrete pavements, as well as for heavily trafficked asphalt concrete pavements and intersections. Since 2001, many projects have been constructed and many advances have been made and continue to be made in the design, panel fabrication, and panel installation aspects of the technology. In the United States, the PCP technology is being used for intermittent repairs (full-depth or full-panel replacement) and for continuous applications (longer length/wider area rehabilitation) with service life expectations of at least 20 years for repairs and at least 40 years for continuous applications, without significant future corrective treatment.
This session, organized by ACI Committee 325, with support from the Federal Highway Administration (FHWA), will present the current developments and best practices related to PCP design, panel fabrication, and panel installation processes. In the first session, experts from several highway agencies, including Wisconsin DOT, will present the implementation details related to new PCP applications by their agencies.
Emerging Technologies in Civil Infrastructure (ACI Fall Convention, October 2015, Denver, CO)
The session’s aim is to highlight some of the current emerging industry technologies identified by SDC. This particular session will present overviews of newer curing technologies currently or soon to be impacting the concrete industry. They are in various stages of and directly involved in their implementation and further development.
Hot Topic Session: Constructability of Projects Designed for 100+ Year Service Life (ACI Fall Convention, October 2015, Denver, CO)
This Hot Topic Session addresses aspects of construction on projects that demand a 100+ year service life. The session will provide perspectives from the diverse set of players involved in these projects. This includes owners charged with balancing the requirements of the project with the expectations of the public; design engineers who must develop plans and specifications that must address the complexity of the structural, durability, and constructability requirements of the project; contractors who must implement these demands; and materials testing laboratories that need to validate the durability of the materials.
SHM Real-Life Applications (ACI Fall Convention, October 2015, Denver, CO)
Structural health monitoring (SHM) is a process aimed at providing actionable, accurate, and in-time information concerning structural health condition and performance of concrete structures. The information obtained from monitoring is generally used to plan and design maintenance activities, to increase the safety and to mitigate post-event consequences, to verify hypotheses, to reduce uncertainty, and to widen the knowledge concerning the concrete structure being monitored. While SHM benefits have great promise, SHM is still not applied in a widespread manner, and the end users are frequently reluctant to apply it.
The aims of this session are to pull together several examples of SHM real-life applications, raise awareness about how the SHM is applied, understand:
1. The overall behavior of concrete structure, and identify related challenges; and
2. To present case studies of SHM real-life applications and assess the corresponding SHM benefits, and present them to interested parties and broader public by presentations during the session.
- Live Load Test and Long-Term Monitoring of the Varina Enon Bridge by Carin L. Roberts Wollmann, Professor, Virginia Tech, Blacksburg, VA
- Long-Term Monitoring of Pretensioned Bridge Piles in Salt Water by H R Trey Hamilton, Professor, University of Florida, Gainesville, FL
- Performance Measurement of Voided Slab Concrete Bridge Synergy of Current and Emerging SHM Technologies by Devin K. Harris, Associate Professor, University of Virginia, Charlottesville, VA
- Monitoring the Structural Health of a Bridge during Fatigue Repair and Rehabilitation with a New Lightweight Concrete Deck by Michael C. Brown, Associate Director, Virginia Transportation Research Council, Charlottesville, VA
- Comparative Analysis of Different Technologies to Measure the Vertical Deflection in High-Span High-Rise Concrete Box-Girder Viaducts by Miguel Angel Vicente, Professor, University of Burgos, Burgos, Spain
- Strain-Based Monitoring of the Streicker Bridge Using Fiber-Optic Sensors by Branko Glisic, Associate Professor, Princeton University, Princeton, NJ
- Short- and Long-Term Field Evaluation of Pavements at O’Hare International Airport by Jacob Henschen, Assistant Professor, Valparaiso University, Valparaiso, IN
Cementitious Materials for Nuclear Waste Storage and Disposal (ACI Fall Convention, October 2015, Denver, CO)
Cementitious materials have widespread use in nuclear waste storage and disposal applications, including waste form stabilization, dry storage structures, and repository applications, and in each application, the use of cement-based materials presents unique challenges. For cement-stabilized wastes and repository applications, the transport of radionuclides through the cementitious materials is of great concern, as certain radionuclides are highly mobile in high-pH pore fluid. For intermediate-term dry storage, thermal, radiation, and environmental loading can influence degradation of the portland cement concrete structures, which in turn impacts safe storage.
This session addresses the measurement and modeling of properties that will improve the understanding and prediction of the long-term structural, hydraulic, and chemical performance of cementitious materials used in nuclear waste disposal.
- Performance of Deteriorated Dry-Cask Storage Systems Subjected to Impact Loading by Bora Gencturk, Assistant Professor, University of Houston, Houston, TX
- Concrete Over Packs in Dry-Cask Storage Containment Units by Samuel Johnson, Electric Power Research Institute, Charlotte, NC
- Development of Ultra-High-Performance Concretes for Dry Cask Waste Storage Applications by Brian H. Green, Research Geologist, U.S. Army Corps of Engineers—Engineer Research & Development Center, Vicksburg, MS
Design and Performance of Concrete Bridges and Buildings When Interacting with Soils and Foundations (ACI Fall Convention, October 2015, Denver, CO)
This special session will emphasize the design and performance of concrete bridges and buildings with consideration for interaction with soils and foundations, including deep or shallow foundations. Given soil structure interaction as being a critical factor in the design of most buildings and bridges, a technical forum is needed to exchange current knowledge and develop research needs. Presentations will encompass a wide variety of technical issues such as the effect of differential settlement on the behavior of structures, backfills for bridge abutment, and earthquake-induced responses of structures. Both experimental and analytical investigations are of interest. The session brings to light recent research findings and provides an opportunity to discuss present challenges and technical issues. Critical information is provided to those who lead tomorrow’s structural design and construction in conjunction with soils and foundations, including practicing engineers, government officials, and academics.
Legacy of Per Fidjestøl (ACI Fall Convention, October 2015, Denver, CO)
Per Fidjestøl was a pioneer in the concrete industry. An ACI Fellow and Honorary ACI member, Fidjestøl spent 45 years in the concrete industry. During the tenure of his concrete career, Fidjestøl contributed to the development of high-performance concrete incorporating silica fume for sustainable construction. The purpose of this session is to honor both the legacy of Per Fidjestøl’s early work with concrete and highlight some of the current state-of-the-art research. Ultimately, the technical session is designed to celebrate the 45 years that Fidjestøl contributed to advancing the sustainable development of concrete structures. We celebrate not only his involvement in new concrete technologies but also how he educated the industry. Whether through his many appearances at conferences across the world or as a Professor at the University of Agder, Fidjestøl helped cultivate and refine a new generation of concrete scientists and engineers.
- Long-Term Chloride Intrusion in Field-Exposed Concrete with and without Silica Fume by Doug Hooton, Professor, University of Toronto, Toronto, ON
- Parking Structures, Case Histories by Anthony N Kojundic, Technical Sales, Elkem Materials Inc., Pittsburgh, PA
- The Storebaelt Link-First Major Use of Ternary Blend Concrete-1 Million Cubic Meters by Robert C. Lewis, Technical Marketing Manager, Elkem Silicon Materials, Reading Berkshire, United Kingdom
ABC Connections for Seismic-Resistant Design (ACI Fall Convention, October 2015, Denver, CO)
ABC connections for concrete bridges are becoming more common in practice. It is the goal of this session to assess the current state of the art in research and practice regarding the use of ABC connections for the seismic design of concrete bridges.
- Connections for ABC in Seismic Regions by John F. Stanton, Professor, University of Washington, Seattle, WA
- Seismic Behavior of Pipe Pin Connections for Accelerated Bridge Construction by Ali Mehrsoroush, University of Nevada, Reno
- Experimental Evaluation and Analytical Simulation of Bridge Column to Footing Joints Connected Using Grouted Splice Sleeves by Chris P. Pantelides, Professor, University of Utah, Salt Lake City, UT
Cement-Admixture Interaction (ACI Fall Convention, October 2015, Denver, CO)
The session will discuss various test methods that can be used to evaluate early stiffening of cement paste or mortar to anticipate complex cement-admixture interactions. The session will also highlight recent findings aiming at understanding the physical and chemical phenomena affecting the adsorption of chemical admixtures on binder materials and the resulting effects on fresh and hardened properties of concrete. The session should be of interest to researchers, concrete engineers, material suppliers, and students dealing with modern materials design and construction. Attendees will become aware of recent advances in testing techniques and governing mechanisms affecting cement-admixture interaction.
BIM for Cast-in-Place Concrete (ACI Fall Convention, October 2015, Denver, CO)
The objective of the session is to inform ACI members of the progress made by ACI Committee 131 on developing open information exchange between various software products used in the concrete supply chain. The information delivery manual (IDM) and model view definitions (MVD) developed by the committee will be presented and explained. A presentation will also be made of state-of-the-art applications of BIM in the concrete supply chain.
- Introduction to Industry Foundation Classes (IFC) and the Role of Information Delivery Manuals (IDM) and Model View Definitions (MVD) by Charles M. Eastman, Professor, Georgia Institute of Technology, Atlanta, GA
- An Overview of ACI 131.1 IDM for Cast-in-Place Concrete by Allan P. Bommer, Chief Design Engineer—Structural Concrete Products, Bentley Systems Inc., Seattle, WA
- A Model-Based Process for the Reinforced Concrete Value Chain by Peter J. Carrato, BIM Manager, Bechtel Corporation, Frederick, MD
- BIM Implementation by the Concrete Contractor by William M. Klorman, President/CEO, W. M. Klorman Construction Corp, Woodland Hills, CA
- BIM in Formwork Applications: A Case Study by Andrew R. Lloyd, Engineering Manager, MEVA Formwork Systems, Inc., Wake Forest, NC
- The Future of BIM in Cast-in-Place Concrete by Julian Kang, Associate Professor, Texas A&M University, College Station, TX
Deflections and Construction Tolerances: The Good, the Bad, and the Ugly (ACI Fall Convention, October 2015, Denver, CO)
Demands for thinner, lighter structures, coupled with advances in material strengths, construction techniques, and structural analysis software, make serviceability an increasingly important limit state for modern concrete buildings and bridges. This session tackles concrete issues related to deflections, particularly through the lens of constructability. The session will highlight project successes and misfires and delve into reasons leading to the outcomes.
- 350 Mission: High-Performance Flat-Plate Post-Tension Design with Innovative Multi-Story Construction Methodologies by Eric S. Peterson, Senior Superintendent, Webcor Builders, Knightsen, CA
- Effect of Early-Age Material Properties on Concrete Slab Deflections by Caitlin Mancuso, Student, University of Western Ontario, London, ON, Canada
- Incremental and Total Long-Term Deflection Calculation (Including the Effect of Construction Loads) Using SAFE by Kevin MacLean, Associate, Read Jones Christofferson Ltd., Toronto, ON, Canada
- Planning for the Control of Construction Tolerances and Deflections by Eamonn F. Connolly, Structural Engineer, James McHugh Construction Co, Chicago, IL
- Elevated Concrete Floor Slabs: How to Be on the Level by Douglas Sarkkinen, Principal, Otak Incorporated, Battle Ground, WA
- Lessons Learned from Deflection Issues during Construction by Bruce A. Suprenant, Senior Construction Engineer, American Society of Concrete Contract
Resilient Housing (ACI Spring Convention, April 2015, Kansas City, MO)
This session will explore the topic of resilience as it pertains to the homes we live in and the communities they create. Attendees will come away with a greater understanding of economic and societal impacts of less durable housing, what it means to be resilient, and ways to create better buildings with concrete systems. New research into measuring the resilience of a home will link the use of concrete materials and systems to sustainable, longer-lasting structures. It will also detail the ways in which specific weather events such as high winds and storm surge can affect the built environment. Attendees will hear about protective measures for creating hazard-resistant housing using concrete building solutions. Case studies of real-world concrete homes subjected to severe weather will examine their design, construction, and performance to demonstrate that current technology exists to prevent this type of damage.
- Enhanced Resilience: Why We Need It by Stephen S. Szoke, Director Codes and Standards, Portland Cement Association, Skokie, IL
- Concrete Housing and Sustainability by Julie K. Buffenbarger, Construction Specialist, Lafarge, Cleveland, OH
- High-Performance Concrete Housing by Brent Douglas Anderson, President, BDA Associates, LLC, Edina, MN
- Tornadoes and Storm Shelters: Update on FEMA Design Guides by Lionel A. Lemay, Senior Vice President, Sustainability, National Ready Mixed Concrete Association (NRMCA), Libertyville, IL
- Coastal Housing by J. Edward Sauter, Executive Director, Tilt-Up Concrete Association, Mount Vernon, IA
- Case Study: Disaster-Resistant Guam Housing by Kenneth A. Luttrell, Vice President, CYS Structural Engineers Inc., Sacramento, CA
Use of High-Strength Concrete in Tall Buildings (ACI Spring Convention, April 2015, Kansas City, MO)
The objective of the session is to inform practitioners and engineers on the use of high-strength concrete (HSC) in tall buildings. There has been a significant amount of research regarding the development of HSC, but the learning outcomes of this session include topics related to the delivery, placement, testing (including in-place), and case studies of HSC in tall buildings.
- Testing High-Strength Concrete in Chicago by R. Walter H. Flood IV, Manager/Engineer, Flood Testing Labs Inc., Chicago, IL Download the PDF
- Successful High-Strength Concrete in Tall Buildings in North America by William S. Phelan, Senior Vice President of Marketing & Technical Services, The Euclid Chemical Co., East Brunswick, NJ
- The Successful Use of High-Strength Concrete in United States High-Rise Buildings by Cary S. Kopczynski, President/Senior Principal, Cary Kopczynski & Co Inc., Bellevue, WA; and Joe Ferzli, Cary Kopczynski & Co Inc. Download the PDF
- The Use of High-Strength Concrete in Tower One of the World Trade Center by Casimir J. Bognacki, Chief of Materials, The Port Authority of New York & New Jersey, New Hyde Park, NY
- High-Strength, High-Performance Iconic Supertall Towers: Trump Tower, Chicago, USA; Cayan Tower, Dubai, UAE; Burj Khalifa, Dubai, UA by Bradley S. Young, Associate Director, Skidmore, Owings & Merrill LLP, Chicago, IL
Ternary Blends and More (ACI Spring Convention, April 2015, Kansas City, MO)
This session looks at the use of multiple blends of cementitious materials used for designing durable and ultradurable concretes. The use of ternary and quaternary blends to achieve long-term lifetimes, and thus lower environmental impact, will be discussed.
- Advantages of Silica Fume-Slag Ternary Binders for Production of Durable Concrete by R. Doug Hooton, Professor, University of Toronto, Toronto, ON, Canada Download the PDF
- Ternary Blends and More: Durability by R. Michael D.A. Thomas, Professor, University of New Brunswick, Fredericton, NB, Canada
Influence of Admixtures on Early-Age Properties (ACI Spring Convention, April 2015, Kansas City, MO)
The objective of this session will be to address the influence of chemical and mineral admixtures on the early-age properties of concrete, mortar, and grout. The session will educate practitioners on methods to measure early shrinkage, and to examine the effect of admixtures on early-age properties.
Recent Updates to Blast Design Guidance (ACI Spring Convention, April 2015, Kansas City, MO)
In this session, recent updates to blast design guidance will be presented. The session will focus on new criteria incorporated in “Structures to Resist the Effects of Accidental Explosions,” UFC 3-340-02, Change 1 (2014). These criteria include a major revision to the UFC’s analysis and design procedures for reinforced and unreinforced masonry walls and a new testing protocol and performance requirements for mechanical splices that will, for the first time, permit their use on certain explosives safety applications. In addition, recent research will be presented on the performance of concrete elements under blast loading.
- Overview of UFC 3-340-02, Change 1 by William H. Zehrt, Jr., Safety (Structural) Engineer, DoD Explosives Safety Board, Alexandria, VA Download the PDF
- Performance of Reinforcement Bar Mechanical Couplers at Low, Medium, and High Strain Rates by Stephen P. Rowell, Research General Engineer, Engineer Research and Development Center, U.S. Army Corps of Engineers, Vicksburg, MS Download the PDF
- DoD Research in Support of Future UFC 3-340-02 by Robert T. Conway, Research Structural Engineer, NAVFAC Engineering and Expeditionary Warfare Center, Port Hueneme, CA
Pumpability of SCC (ACI Spring Convention, April 2015, Kansas City, MO)
This session intends to inform concrete producers, contractors, academics, and students on the latest developments, common practices, and problems associated with pumping of self-consolidating concrete (SCC). The session focuses on selecting materials and optimizing mixture design to ensure adequate pumping of SCC. Practical experiences on the quality control of SCC for the construction of the Burj Khalifa, as well as the influence of SCC fresh properties on changes in the air void system due to pumping are discussed. The latest theoretical developments on prediction of pumping pressure, influence of constituent elements, and the changes in fresh concrete properties are also presented.
- Burj Khalifa—A New High for High-Performance SCC by James M. Aldred, Principal Professional, AECOM, Sydney, NSW, Australia Download the PDF
- Practical Experiences on Pumping of SCC by Matt Kaminsky, Postdoctoral Research Associate, ACI Concrete Placement, Spring Hill, KS
- Influence of Pumping on Fresh Concrete Properties for SCC by Thomas A. Bier, Professor, TU Bergakademie Freiberg-Lehrstuhl Baust, Freiberg, Germany Download the PDF
Building Resiliency (ACI Spring Convention, April 2015, Kansas City, MO)
The Road to Resilience lies in adapting. Cities, towns, and communities, working with the construction industry, continue to rebuild and prevent against the challenges that face our buildings—both from natural disasters and aging structures. These presentations offer knowledge that stricter standards and design elements can go a long way to reaching our goal of being “resilient.”
- Resilience: What Role Will Concrete Play in Making Our Communities Safer? by Lionel A. Lemay, Senior Vice President, Sustainability, National Ready Mixed Concrete Association (NRMCA), Libertyville, IL Download the PDF
- Enhancements in Building Design and Construction: Prerequisites for Resilient Communities by Stephen S. Szoke, Director Codes and Standards, Portland Cement Association, Skokie, IL Download the PDF
- Building Resilience as a Design Objective by Mehrdad Sasani, Professor, Northeastern University, Boston, MA Download the PDF
Rational Approaches for Fire Resistant Design of Concrete Structures (ACI Spring Convention, April 2015, Kansas City, MO)
This session provides an opportunity for researchers, architectural/civil/structural engineers, and students to exchange recent advances in applied research and to share information, experiences, and knowledge in the implementation of rational design approaches for determining the fire resistance of a range of concrete structures.
- Out-of-Plane Behavior and Failure of Full-Scale RC Bearing Walls during and after One-Sided Fire Exposure by Kevin Mueller, Structural Fire Engineer/Physical Security Consultant, Hinman Consulting Engineers, San Francisco, CA
- Rational Design for FRP-Strengthened Reinforced Concrete Structures in Fire by Mark F. Green, Associate Professor, Queen’s University, Kingston, ON, Canada Download the PDF
- Effect of Rapid and Slow Heating Rate History on High-Strength Concrete Deformation and Failure Behavior by Elin A. Jensen, Assistant Professor, Lawrence Technological University, Southfield, MI Download the PDF
- Tools for Performance-Based Design of Reinforced Concrete Structures by Maged A. Youssef, Professor, University of Western Ontario, London, ON, Canada Download the PDF
Form Pressure of Self-Consolidating Concrete—Hydrostatic or Not? (ACI Spring Convention, April 2015, Kansas City, MO)
This technical session will highlight recent advances carried out to understand key factors affecting formwork pressure of SCC, including concrete thixotropy, casting rate, and formwork characteristics. The session will highlight various models that have been developed to estimate form pressure characteristics of SCC. A number of field-related projects targeting the calibration of various models are discussed. The session should be of interest to designers and construction professionals dealing with SCC technology, as well as researchers and educators interested in the science behind the control of form pressure.
Heavy-Duty Concrete Pavements (ACI Spring Convention, April 2015, Kansas City, MO)
Heavy-duty pavements span a wide variety of uses, from truck distribution facilities, to intermodal yards, to military equipment hardstands, to high-volume interstates. These pavements can be subjected to extremely high axle loadings, millions of heavy vehicle load repetitions, high-speed truck traffic, or all of
these. Designers and contractors must understand the unique requirements of these pavements, and use appropriate design tools, specification provisions, and construction techniques to properly design and build the pavements for their expected service lives. Concrete pavements are ideally suited for these
applications because of their rigidity, strength, and durability. However, different types of concrete pavements, including conventional jointed pavements, roller-compacted concrete (RCC), and precast, may be optimal choices depending on the circumstances.
- Internally Cured Concrete Pavement for Intermodal Facility by Chetana Rao, Senior Research Engineer, Rao Research and Consulting, LLC, Champaign, IL Download the PDF
- Fast-Track Precast Concrete Pavements for High-Volume Roadways by Shiraz D. Tayabji, Senior Principal Engineer, Applied Research Associates, Inc., Ellicott City, MD Download the PDF
- Development of ACI 327R-14, “Guide to Roller-Compacted Concrete Pavements” by Norbert J. Delatte, Assistant Professor, Cleveland State University, Broadview Heights, OH Download the PDF
- Value-Engineered Heavy-Duty RCC by Fares Y. Abdo, Director of Technical Services, Morgan Corp, Vestavia, AL Download the PDF
- Development of ACI 330’s Industrial Pavement Guide by Tim Cost, Senior Technical Service Engineer, Holcim (US) Inc., Canton, MS Download the PDF
Advances in Pervious Concrete (ACI Fall Convention, October 2014, Washington, D.C.)
This session focuses on disseminating the advances that have happened in the field of pervious concretes, in material design, proportioning, properties, standards development, and field applications.
- Effects of Silica Fume on Pervious Concrete Performance and Durability by John T. Kevern, Assistant Professor of Civil Engineering, University of Missouri-Kansas City, Kansas City, MO
- Development of Portable Devices for Characterizing the Workability of Pervious by Betiglu Jimma, Student, Clemson University, Central, SC
- Importance of Site Design to Pervious Concrete Pavements by Scott Erickson, NRMCA Pervious Craftsman
- Observations of Corrosion of Reinforcement in Pervious Concrete: Laboratory Results Inspired by Field Performance by George W. Seegebrecht, Senior Evaluation, Concrete Consulting Engineers LLC, Westchester, IL
- Overview and Recap of ACI’s Pervious Concrete Student Competition by Walter H. Flood IV, Manager-Engineer, Flood Testing Labs Inc., Chicago, IL
- Development of a New Test Method for Determining the Surface Infiltration Rate of Permeable Unit Pavement Systems by David R. Smith, Technical Director, Interlocking Concrete Pavement Institute, Chantilly, VA
Self-Consolidating Concrete for Precast/Prestressed Applications (ACI Fall Convention, October 2014, Washington, D.C.)
The hardened properties and performance of self-consolidating concrete (SCC) developed for use in precast prestressed applications will be discussed. Presentations will specifically focus on SCC mechanical properties, durability, time-dependent behavior, structural behavior, and case studies that document the use of SCC in full-scale precast prestressed applications.
- A Review of Creep and Shrinkage of Self-Consolidating Concrete for Prestressed Applications by Royce W. Floyd, Assistant Professor, University of Oklahoma, Norman, OK
- Precast Prestressed Concrete Truss Using Self-Consolidating Concrete by George Morcous, Associate Professor, University of Nebraska-Lincoln, Omaha, NE
- A Probabilistic Model for Predicting Early-Age Creep Deformation of Self-Consolidating Concrete Members by Young Hoon Kim, Assistant Professor, University of Louisville, Louisville, KY
James K. Wight: A Tribute from His Students and Colleagues (ACI Fall Convention, October 2014, Washington, D.C.)
This session is aimed at disseminating information related to past and current research on behavior of reinforced concrete flexural members and walls, as well as on structural collapse.
- Design of Discontinuity Regions of Earthquake-Resisting Structural Walls by Jack P. Moehle, T.Y. and Margaret Lin Professor of Engineering, University of California, Berkeley, Berkeley, CA
- Deformation Capacity and Strength of RC Frame Members Constructed with High-Strength Materials by Min Yuan Cheng, Assistant Professor, National Taiwan University of Science and Technology, New Taipei City, Taiwan
- Shear Strength of RC Flexural Elements Reinforced with T-Headed Transverse Reinforcement in Safety-Related Nuclear Facilities by Michael E. Kreger, Garry Neil Drummond Endowed Chair in Civil Engineering, University of Alabama, Tuscaloosa, AL
- Reinforced Concrete in Motion: A Retrospective of Developments on Knowledge Related to Flexural Response of Reinforced Concrete by Mete A. Sozen, Kettlehut Distinguished Professor, Purdue University, West Lafayette, IN
Sustainable Performance of Concrete Bridges and Elements Subject to Aggressive Environments: Monitoring, Evaluation, and Rehabilitation (ACI Fall Convention, October 2014, Washington, D.C.)
This session will emphasize the sustainable performance of concrete bridges and their elements when subjected to aggressive environments. Presentations will include a variety of technical aspects such as durability of concrete members, performance monitoring technologies, evaluation methodologies, damage assessment, and structural rehabilitation. Both experimental and analytical investigations are of interest. The session brings to light recent research findings and provides an opportunity to discuss present challenges and technical issues. Critical information is given to those who lead tomorrow’s bridge design and construction, including practicing engineers, government officials, and academics.
- Finite Element Modeling of RC Beams Strengthened with Prestressed NSM-CFRP Strips Subjected to Severe Environmental Conditions by Raafat El-Hacha, Associate Professor, University of Calgary, Canada
- Durability and Mechanical Performance of a Sustainable Low-Cement Concrete for DOT Applications by Reza Moini, Research Teaching Assistant, University of Wisconsin – Milwaukee, Milwaukee, WI
- Early-Age Cracking in Cast-in-Place Concrete Bridge Decks due to Shrinkage Strain by Baolin Wan, Associate Professor, Marquette University, Milwaukee, WI
- Sustainable Earthquake-Resistant Design of Hollow Bridge Columns Using Low-Cost Fiber-Reinforced Cement Composites by Myoungsu Shin, Assistant Professor, Ulsan National Institute of Science and Technology, Ulsan Metropolitan City, South Korea
- Monitoring of the 205 ft Precast Girders of the Alaskan Way Viaduct in Seattle, WA by Sameh S. Badie, Associate Professor, George Washington University, Washington, DC
- Using GFRP Reinforcing Bar as a Cost-Effective Solution to Extend the Service Life of New and Replacement Bridge Decks: A Case Study of the I-635 Bridge Deck Replacement for the Kansas Department of Transportation by Ryan Koch, FRP Applications Engineer, Hughes Brothers, Seward, NE
- Reducing Deck Cracking in Composite Bridges by Controlling Shrinkage and Creep Properties by Fatmir Menkulasi, Assistant Professor, Louisiana Tech University, West Monroe, LA
- Analytical Modeling of Reinforced Concrete Beams Strengthened with Mechanically Fastened Fiber-Reinforced Polymers (MFFRP) by Vicki Brown, Widener University
Celebrating 100 Years of John Joseph Earley and the Earley Studio Work (ACI Fall Convention, October 2014, Washington, D.C.)
This session will be dedicated to M. K. (Mary Krumboltz) Hurd, The Woman Who Formed Concrete. Architectural concrete and ACI pioneer John J. Earley left a legacy of distinctive work throughout the United States, but nowhere more than in Washington, DC. These sessions will present some of the outstanding Earley Studio projects in the nation’s capital and other parts of the country. The history of John J. Earley’s innovation will highlight distinctive features at Meridian Hill Park, the Shrine of the Sacred Heart, the Polychrome Houses, and the Franciscan Monastery of the Holy Land in America. These spectacular projects illustrate the revolutionary work done in concrete nearly 100 years ago. You will be amazed by concrete’s resilience and aesthetic durability.
- Repairing Old Concrete at Meridian Hill Park, Washington, D.C. by Robert A. Weinstein, President, Architrave P.C., Washington, D.C.
- Time Goes, You Say? Ah, No, Alas, Time Stays: We Go by Kimberly Waggle Kramer, Director of Graduate Studies, Kansas State University, Manhattan, KS
- Secrets of John Earley’s Mosaic Concrete on the Baha’i Temple by Robert F. Armbruster, President, The Armbruster Company Inc., Northbrook, IL
- Repairing Old Concrete at Meridian Hill Park by Judith M. Capen, Architrave P.C., Washington, D.C.
- John Earley’s Mosaic Art—Saints, Dinosaurs, and Battle Ships by Robert F. Armbruster, President, The Armbruster Company Inc., Northbrook, IL
- Current-Day Architectural Concrete by Larry Rowland, Manager-Marketing Technical Services, Lehigh White Cement Company, Allentown, PA
Structural Health Monitoring of Concrete Structures (Durability)—Tribute to Richard Weyers (ACI Fall Convention, October 2014, Washington, D.C.)
Sponsored by ACI Committees 444, Structural Health Monitoring and Instrumentation; 209, Creep and Shrinkage in Concrete; 222, Corrosion of Metals in Concrete; 345, Concrete Bridge Construction, Maintenance and Repair; 348, Structural Reliability and Safety; 365, Service Life Prediction; 435, Deflection of Concrete Building Structures; and Joint ACI-ASCE Committees 343, Concrete Bridge Design, and 441, Reinforced Concrete Columns.
- Corrosion of Reinforcement in High-Performance Concrete by Michael M. Sprinkel, Associate Director, Virginia Center for Transportation Innovation and Research, Charlottesville, VA Download the PDF
- Evaluation of the Proposed European Rapid Screening Test for Stainless Steel Reinforcing Bar by Carolyn M. Hansson, University of Waterloo Download the PDF
- Utilizing Large Laboratory Specimens to Develop Field Evaluation Techniques for Reinforced Concrete by Neal S. Berke, Vice President, Research, Tourney Consulting Group LLC, Kalamazoo, MI Download the PDF
- Use of Passive and Wireless-Based RFID Sensors to Measure Chloride Ingress in Concrete by Tyler Ley, Associate Professor, Oklahoma State University, Stillwater, OK Download the PDF
- Modeling the Remaining Service Life of Reinforced Concrete Bridges by David Trejo, Professor and Hal Pritchett Endowed Chair, Oregon State University, Corvallis, OR
Emerging Technologies in Civil Infrastructure (ACI Fall Convention, October 2014, Washington, D.C.)
The goal of the ACI Foundation’s Strategic Development Council (SDC) is industry-wide collaboration to address the concrete industry’s technological challenges and to create a forum for the introduction and nurturing of new technologies. This session highlights issues of importance in the concrete industry and overviews of newer technologies currently or soon to be impacting the concrete industry. The presentations are by individuals who are both well-versed in the specific issue or technology and directly involved in their implementation and further development.
Aggregate Optimization and Packing (ACI Fall Convention, October 2014, Washington, D.C.)
The mechanical properties of portland cement concrete, such as mechanical strength, modulus of elasticity, creep, and shrinkage, greatly depend on the properties of their main constituent: the aggregates. Packing density, compaction degree, particle size, and spatial distribution of aggregates affect the macromechanical behavior of concrete. This session will discuss how better aggregates’ packing and optimal distribution can improve the performance of concrete.
- What Aggregate Packing is Optimal? by Eric P. Koehler, Director of Quality, Titan America, Miami, FL Download the PDF
- Development and Implementation of Aggregate Grading for Pavements and Structures by Tyler Ley, Associate Professor, Oklahoma State University, Stillwater, OK Download the PDF
- Aggregate Optimization for Concrete Mixtures with Low Cement Factor by Mohamadreza Moini, MS Student, University of Wisconsin – Milwaukee, Milwaukee, WI Download the PDF
- 3-D Aggregate Shape Analysis and Packing Model by Edward J. Garboczi, Fellow, Applied Chemicals and Materials, National Institute of Standards and
Technology, Boulder, CO Download the PDF
- Particle Packing from a Rock’s Perspective by James M. Shilstone, Jr., Concrete Technologist, Command Alkon, Inc., Frisco, TX Download the PDF
The ACI 562 Code (ACI Spring Convention, March 2014, Reno, NV)
The development, approval, and adoption of the ACI 562 Code for Evaluation, Repair and Rehabilitation of Existing Concrete Structures represents a milestone in the concrete repair industry. For the first time, a code has been developed to specifically address and provide code requirements for the repair of existing concrete structures. The session will describe key features of ACI 562, describe the process for adoption of ACI 562 into general building codes, and present the process for ongoing development of ACI 562.
- History and Background of the ACI 562 Code by Lawrence F. Kahn, Professor, Georgia Institute of Technology, Atlanta, GA
- Chapter 1—The ACI 562 Code by Gene R. Stevens, Principal, JR Harris & Co Structural Engineers, Denver, CO
- The Building Official’s Perspective by Constadino (Gus) Sirakis, Executive Director of Technical Affairs, NYC Buildings, New York, NY
- Evaluation of Existing Concrete Structures by Carl J. Larosche, Principal, Wiss, Janney, Elstner Associates, Inc., Austin, TX
- Structural Design Requirements for Concrete Repair by Eric L. Edelson, Vice President, Edelson Consulting Group, LLC, Potomac, MD
- Durability Requirements in ACI 562 by Fred R. Goodwin, Fellow Scientist, BASF Construction Chemicals, Beachwood, OH
- Chapters 9 and 10—Construction and Quality Assurance by Jay H. Paul, Senior Principal, Klein & Hoffman Inc., Chicago, IL
- ACI 563—Specifications for Repair by Marjorie M. Lynch, President, Lynch Consulting Engineers, New York, NY
Contractors’ Day Session: Bridges that Endure (ACI Spring Convention, March 2014, Reno, NV)
Concrete Bridges in the region face numerous obstacles to endure: seismic loading, severe climatic conditions, marine environments, and high wind loading. Learners will hear how each of these obstacles was overcome for two signature bridge projects in Nevada and California.
Seismic Assessment of Existing Reinforced Concrete Buildings (ACI Spring Convention, March 2014, Reno, NV)
ACI Committee 369 is working with ASCE Committee 41 on the state of the art of seismic assessment of reinforced concrete buildings. These sessions will present potential updates for ASCE 41 and summarize work done by committee members on modeling parameters and acceptance criteria for concrete components, including columns, joints, and walls. Example applications of ASCE 41-13 to existing concrete buildings will also be presented. This session will be of value to practicing engineers engaged in seismic retrofit projects using ASCE 41.
- Collapse Assessment of Non-Ductile, Retrofitted, and Ductile Reinforced Concrete Frames by Majid Baradaran Shoraka, Postdoctoral Fellow, University of British Columbia, Vancouver, BC, Canada
- Nonlinear Modeling Parameters for Jacketed Columns Used in Seismic Rehabilitation of RC Buildings by Jose Alvarez, PhD Candidate, University of Massachusetts Amherst, Amherst, MA
- Seismic Assessment and Retrofit of Existing RC Buildings: Case Studies from Degenkolb Engineers by Insung Kim, Project Engineer, Degenkolb Engineers, San Francisco, CA
- Structural Evaluation and Code Compliance: Sacred Heart University 1904 Original Building and Addition Complex by Jose M. Izquierdo-Encarnación, Owner, PORTICUS, San Juan, PR
Proportioning of Mixtures for Concrete Pavements (ACI Spring Convention, March 2014, Reno, NV)
This session will provide insight into current developments regarding mixture design and
proportioning, specifically for concrete pavements. The session will include discussions of
current issues and innovations related to mixture design, including use of self-consolidating
mixtures, optimization of aggregate gradation, handling of various durability situations, and
mixture component incompatibilities. The speakers have different backgrounds and come from
material suppliers, associations, consulting, and academia.
- ACI 325, Guide for Design and Proportioning of Concrete Mixtures for Pavements by David Newton Richardson, Associate Professor, Missouri S&T, Rolla, MO
- Proportioning Mixtures for Concrete Pavements by Peter C. Taylor, Associate Director, National Concrete Pavement Technology Center, Ames, IA
- Alternative Testing Strategies for Support of Concrete Pavement Mixture Development by Tim Cost, Senior Technical Service Engineer, Holcim (US) Inc., Canton, MS
- Impact of Sand Gradation on Optimized Graded Concrete for Concrete Pavements by Tyler Ley, Assistant Professor, Oklahoma State University, Stillwater, OK
Current Practices in Online Learning (ACI Spring Convention, March 2014, Reno, NV)
This session will provide information on the most current practices related to online learning to include webinars; online courses for credit; and hybrid courses where students view course material online, then work on problems during class.
- Effectiveness of Elementary Engineering Outreach with Personal Instruction and Videos by Tyler Ley, Associate Professor, Oklahoma State University, Stillwater, OK Download the PDF
- Lessons from an Inverted Classroom by Shawn P. Gross, Associate Professor, Villanova University, Villanova, PA Download the PDF
- ACI’s Online Programs for Education of the Concrete Professional by Michael L. Tholen, Managing Director, Professional Development, American Concrete Institute, Farmington Hills, MI Download the PDF
- Teaching Engineering Online by Ruth Wertz, Assistant Professor of Civil Engineering, Valparaiso University, Valparaiso, IN Download the PDF
- Strategies to Strengthen Online Course Instruction by Michael Ciocco, Director of Online Services, Rowan University, Glassboro, NJ Download the PDF
Unconventional Reinforced Concrete Bridge Columns (ACI Spring Convention, March 2014, Reno, NV)
New trends in innovative design and construction of unconventional concrete columns will be presented to promote advancement in this important application. The sessions will include the use of innovative materials, new confinement techniques, and fiber-reinforced concrete. It also includes varying the loading patterns and the geometry of the columns.
- Use of Post-Tensioning in Columns to Mitigate Earthquake Damage by David H. Sanders, Professor, University of Nevada, Reno, Reno, NV Download the PDF
- Concentric and Eccentric Behavior of Rectangular Columns Confined by Steel Ties and FRP Wrapping by Ahmed Al-Rahmani, Student, Kansas State University, Manhattan, KS Download the PDF
- Replacement of the Sellwood Bridge by Mike Lopez, Design Engineer, TYLin International, Salem, OR Download the PDF
- Confinement Model for Bridge Columns Using Cross Spirals by Riyadh A. Hindi, Associate Professor, Saint Louis University, Saint Louis, MO Download the PDF
Monitoring for Cold Weather Concreting (ACI Spring Convention, March 2014, Reno, NV)
The current model for cold weather concreting operations is based on the Thermos Concept–make the concrete hot and then keep it hot. The bulk of the technical aspects of the current ACI 306 document are based on work done over 30 years ago. The practice of cold weather concreting has changed significantly since that time. The changes in cement chemistry and fineness, the widespread use of slower-reacting materials in the interest of sustainability, as well as the ubiquity of the Internet and electronic sensors needs to be incorporated into the revisions to the guide to cold weather concreting as well as to the specification currently under development.
Hydration of Low Portland Cement Binders: Industry Experience and Needs (ACI Spring Convention, March 2014, Reno, NV)
This session will showcase new advances in experimental, theoretical, and computational tools for characterizing cements, IBPs, natural minerals, and hydration and microstructure development in low-cement-content concrete binders. The technical content should be of great interest to both the academic and industrial community and of special interest to those involved in sustainable materials design and development, those who specify binder materials to be used in construction, and those who
promulgate standards and codes for using low-cement-content concretes.
- The Development and Commercialization of Low-Portland-Cement Concrete in the San Francisco Bay Area by Ryan A. Henkensiefken, Technical Services Supervisor, USC Technologies, San Jose, CA Download the PDF
- Current Practice on the Use of Admixtures to Enable Successful Manufacture of Concrete with Low Portland Cement Content by Josephine H. Cheung, Principal Scientist, WR Grace, Cambridge, MA Download the PDF
- Concrete of the Future: Overcoming the Challenges of Using Low Portland Cement Mixtures by Jussara Tanesi, Concrete Materials Engineer/Lab Manager, FHWASES & Associates, Vienna, VA
Hot Topic Session: Moisture in Concrete Slabs (ACI Spring Convention, March 2014, Reno, NV)
Due to several changes in the construction market, including EPA regulation changes to the allowable VOC content in adhesives and the rise of fast-track construction projects, moisture-related flooring failures have become more prevalent in concrete slab construction. In response, contractors have been seeking ways to combat these problems without impacting construction schedules. The panelists, including a general contractor, vapor-barrier manufacturer, national consulting firm specializing in moisture testing, and a national flooring consultant, will provide a 360-degree view of this important topic.
- Moisture Related Flooring Failure: The Causes and the Problems that Result by Ryan Henkensiefken, P.E., Business Development Engineer, Central Concrete, San Jose, CA
- Moisture in Concrete Storage, Migration, Measurement by Ned Lyon, P.E., Staff Consultant, Simpson Gumpertz & Heger, Waltham, MA
- Mitigating the Effects of Moisture in Concrete Subfloors by Peter Craig, FACI, FICRI, Concrete Floor Specialist, Concrete Constructives, Greene, ME
Seismic Assessment of Existing Reinforced Concrete Buildings—New Developments (ACI Spring Convention, March 2014, Reno, NV)
ACI Committee 369 is working with ASCE Committee 41 on the state of the art of seismic assessment of reinforced concrete buildings. These sessions will present potential updates for ASCE 41 and summarize work done by committee members on modeling parameters and acceptance criteria for concrete components, including columns, joints, and walls. Example applications of ASCE 41-13 to existing concrete buildings will also be presented. This session will be of value to practicing engineers engaged in seismic retrofit projects using ASCE 41.
UHPC Innovations for Durability and Resiliency (ACI Fall Convention, October 2013, Phoenix, AZ)
This session will give an overview about the superior durability performance of UHPC in comparison to normal-strength concrete; present innovative applications for the use of UHPC for long-term solutions; and provide innovation solutions to further improve its durability in the cracked state, such as self-healing UHPC. Enhanced long-term durability and resiliency of UHPC will directly address the current issues of the U.S. infrastructure.
- Durability of a Steel Fiber-Reinforced UHPC by Benjamin Graybeal, Research Structural Engineer, Federal Highway Administration, McLean, VA Download the PDF
- Miami Arts Museum, Florida—UHPC Mullions Designed for Hurricane Forces by Vic Perry, Professional Engineer, Lafarge North America Inc., Calgary, AB, Canada Download the PDF
- Self-Healing Ultra-High Performance Fiber Reinforced Concrete by Liberato Ferrara, Assistant Professor, Politecnico di Milano, Milano, Italy Download the PDF
- UHPC Troughs for a Wastewater Treatment Plant—The Goldbar Wastewater Treatment Plant Expansion, Edmonton, Alberta by Vic Perry, Professional Engineer, Lafarge North America Inc., Calgary, AB, Canada Download the PDF
A Fresh Look at Cementitious Materials and Admixtures (ACI Fall Convention, October 2013, Phoenix, AZ)
These presentations include an introduction and overview of the revised documents E3, “Cementitious Materials for Concrete,” and E4, “Chemical Admixtures for Concrete,” developed by Education Committee E701, Materials for Concrete Construction. E3 discusses portland, blended, and other hydraulic cements, along with supplementary cementitious materials such as slag cement, fly ash, and silica fume. E4 covers air-entraining admixtures, water-reducing and set-controlling admixtures, as well as specialty admixtures for various specific applications. Since these documents are intended for users and students, the information is presented in a more practical and instructive format than their technical committee counterparts.
- E701 Documents – An Overview by Lawrence L. Sutter, Professor, Michigan Technological University, Houghton, MI Download the PDF
- E3 – Cementitious Materials for a New Age by Darrell F. Elliot, Technical Service Manager, Buzzi Unicem USA, Metairie, LA Download the PDF
- E4 – Chemical Admixtures, Part 1 by Charles K. Nmai, Chief Engineer, BASF Corporation – Admixture Systems, Twinsburg, OH
- E4 – Chemical Admixtures, Part 2 by Kari L. Yuers, President & CEO, Kryton International Inc., Vancouver, BC, Canada Download the PDF
Concrete with Recycled Materials (ACI Fall Convention, October 2013, Phoenix, AZ)
This session provides an avenue for attendees to learn more about innovative sustainable approaches in the field of recycled concrete. Concrete recycling is an increasingly common method of using different waste materials. Concrete was once routinely trucked to landfills for disposal, but recycling has a number of benefits that have made it a more attractive option in this age of greater environmental awareness, more environmental laws, and the desire to keep construction costs down.
- Proportioning and Performance Evaluation for Concrete with Recycled Glass Fine Aggregates by Jared R. Wright, Student, Penn State University, State College, PA Download the PDF
- Recycling Lead-Based Paint Contaminated Deconstructed Masonry Materials as Aggregate for Portland Cement Concrete by Jiong Hu, Assistant Professor, Texas State University - San Marcos, San Marcos, TX Download the PDF
- Feasibility of Reclaimed Asphalt Pavement as Aggregate in Concrete Pavements by Michael Patrick Berry, Montana State University, Bozeman, MT
- Controlled Low-Strength Material with Recycled Concrete Fines by David Lange, Professor and Associate Department Head of Civil and Environmental Engineering at the University of Illinois at Urbana-Champaign
- Recycling Concrete, Glass, Paper, and Rubber by Frank A Kozeliski, Consultant, Gallup, NM
Electrical Methods to Characterize and Monitor Concrete (ACI Fall Convention, October 2013, Phoenix, AZ)
Electrical methods such as surface resistivity, bulk resistivity, and electro-impedance spectroscopy are becoming more prominent to monitor concrete condition in laboratory and field applications, as illustrated through increased interest from infrastructure management agencies and the commercial availability of testing equipment sets. This session will present recent advances of such technology with potential application to nondestructive testing (NDT) and in-place structural monitoring for concrete.
- Electrical Methods for Estimating the Chloride Resistance of Concrete by Michael D. A. Thomas, Professor, University of New Brunswick, Fredericton, NB, Canada Download the PDF
- Evaluation of Saturation Techniques for In-Place Surface Electrical Resistivity by Jose Miguel Sanchez Marquez, Concordia University Download the PDF
- Resistivity versus Time Due to Concrete Composition and Exposure to Various Curing Regimes by Francisco Presuel-Moreno, Associate Professor, Florida Atlantic University, Dania Beach, FL Download the PDF
- Extensions of Surface Resistivity Testing for Optimization of Concrete Binary and Ternary Blends by Elizabeth Nadelman, Student, Atlanta, GA; and Kimberly E. Kurtis, Georgia Institute of Technology Download the PDF
- Concrete Resistivity for Concrete Production: Comments on Variability and Potential Use in a Quality Control Plan by W. Jason Weiss, Professor, Purdue University, West Lafayette, IN Download the PDF
Conservation of Historic Concrete (ACI Fall Convention, October 2013, Phoenix, AZ)
Conservation of concrete has become more important as some of the world’s most significant concrete structures continue to age and deteriorate. This session will discuss innovations in conservation of historic concrete and will review approaches, repair options, and techniques for repair of historic concrete structures, some dating back to the late 1800s.
- Rainbow Bridge Renovation by David W. Whitmore, Vice President, Vector Corrosion Technologies Ltd., Winnipeg, MB, Canada Download the PDF
- Renovation of Historic Stadium Structures by Matthew R. Sherman, Senior Staff Engineer, Simpson Gumpertz & Heger, Inc., Melrose, MA Download the PDF
- Development of Architectural Precast Concrete by John J. Earley by Sidney Freedman, Director, Architectural Precast Services, PCI, Chicago, IL Download the PDF
- Creating a New Vietnam War Memorial Matching Earley Studio’s Mosaic Concrete by Robert F. Armbruster, President, The Armbruster Company, Inc., Northbrook, IL Download the PDF
Structural Concrete Design - The Legacy of Dr. W. Gene Corley (ACI Fall Convention, October 2013, Phoenix, AZ)
Dr. W. Gene Corley, a long-time member of ACI, passed away March 1, 2013. He was a former Chair of ACI 318 and a member of the Committee for over 40 years. This session will provide a retrospective on his contributions to research, forensic engineering, the structural engineering profession, and the ACI 318 Structural Concrete Building Code.
- Analysis of Flat-Plate and Frame Construction by Neil M. Hawkins, Professor Emeritus, Civil and Environmental Engineering, University of Illinois, Clyde Hill, WA Download the PDF
- Behavior and Design of Earthquake-Resistant Structural Walls by Jack P. Moehle, TY and Margaret Lin Professor of Engineering, University of California, Berkeley, Berkeley, CA Download the PDF
- Contributions to the ACI 318 Structural Concrete Building Code by Randall W. Poston, Principal, Whitlock Dalrymple Poston & Associates, P.C., Austin, TX Download the PDF
- Remembering Dr. W. Gene Corley by Mete A. Sozen, Kettlehut Distinguished Professor, Purdue University, West Lafayette, IN Download the PDF
Certification for QC/QA (Proceedings of the Eighth International Workshop October 18-19, 2013, Phoenix, AZ)
Beyond Structural Concrete in the Americas - Proceedings of the Eighth International Workshop October 18-19, 2013, Phoenix, AZ.
- How to Start an ACI Certification Program by Luke Snell, Western Technologies Inc., Tempe, AZ
- Lessons Learned in Latin America by Roberto Nuñez, North Carolina State University, Raleigh, NC
- ACI Certification in Canada by Wally Rooke, W G Rooke & Associates, Ltd., Calgary, AB, Canada
- How the Chapter-University Collaboration Spread ACI Certification in Mexico by Alejandro Durán Herrera, UNAL- Facultad de Ingenieria Civil, San Nicolas de los Garza, NL, Mexico
Adhesive Anchors (Proceedings of the Eighth International Workshop October 18-19, 2013, Phoenix, AZ)
Beyond Structural Concrete in the Americas - Proceedings of the Eighth International Workshop October 18-19, 2013, Phoenix, AZ.
Proportioning Concrete Mixtures for Use in the 21st Century (ACI Spring Convention, April 2013, Minneapolis, MN)
This session will present the modern methods of mixture design currently in use. The absolute volume method, presented for almost 60 years, is little used in the industry. Designing mixtures using marginal and nontraditional materials for sustainable, performance, and economic reasons has led to the development of other mixture proportion techniques. The presentations will be made by practitioners who design and proportion mixtures on a daily basis to meet the needs of the designer, placer, and finisher.
- Off the Chart Concrete Mixture Proportioning by Teck L. Chua, President, Vulcan Materials Company, Springfield, VA Download the PDF
- Do You Really Know about Moisture Adjustments? by Allyn C. Luke, Concrete Lab Director, New Jersey Institute of Technology, Newark, NJ Download the PDF
- Designing Concrete to Meet Both the Needs of the Specifier and Those of the Concrete Contractor by Warren E. McPherson, Regional Sales Manager, The Euclid Chemical Company, Howell, MI Download the PDF
- Laboratory Paste Mixtures as a Concrete Mix Design Tool by Tim Cost, Senior Technical Service Engineer, Holcim (US) Inc, Canton, MS Download the PDF
- Coarseness-Workability-Consolidation of Concrete Mixes / A New Approach by Tyler Ley, Assistant Professor, Oklahoma State University, Stillwater, OK Download the PDF
- Concrete Proportioning in Hawaii by Timothy S. Folks, Manager Technical Services, Hawaiian Cement, Aiea, HI Download the PDF
- Proportioning Mixtures for Structural Mass Concrete by Darrell F. Elliot, Technical Service Manager, Buzzi Unicem USA, Metairie, LA
Download the PDF
- Mixture Proportioning to Satisfy Specifications by Bernard J. Eckholdt III, Manager of Quality Assurance, Lafarge, Metairie, LA
Download the PDF
- Aggregate Suspension Mixture Proportioning Method by Eric P. Koehler, Vice President, Verifi LLC, Cambridge, MA
- Reaction Kinetics as Applied to Concrete Mixtures by Kevin A. MacDonald, Vice President of Engineering Services, Beton Consulting Engineers LLC, Prior Lake, MN
Early-Age Properties of Repair Binders (Lab, Field, and Test Methods) (ACI Spring Convention, April 2013, Minneapolis, MN)
The success and durability of many concrete repair projects depend on the early-age bond, strength development, modulus development, and dimensional stability of repair binders. Common repair methods that use these materials include concrete patching, overlays, and sprayed concrete. This session will focus on the early-age properties of new and innovative repair binders as determined by laboratory evaluation, field tests, and experience. New test methods for early-age properties of repair material will also be discussed.
Concrete in Historic Structures (ACI Spring Convention, April 2013, Minneapolis, MN)
The main objective of this session is to present a broad perspective on the important issues related to historical structures.
- Concrete Grain Elevators: Their Early Design, Construction, Successes and Failures by Chris Hartnett, Structural Engineer, Meyer Borgman Johnson Structural Design Engineers, Minneapolis, MN Download the PDF
- Concrete Floating Bridges by Neil M. Hawkins, Professor Emeritus, University of Illinois at Urbana-Champaign, Clyde Hill, WA Download the PDF
- History of Concrete in the Twin Cities by Meghan Elliot, Founder, Preservation Design Works and Associate, Minneapolis, MN Download the PDF
- A Lifetime of Finishing Concrete with Uncle Joe by Daniel M. Vruno, Principal Engineer, American Engineering & Testing, Saint Paul, MN Download the PDF
- Restoration of Historic Concrete and Masonry Structure at Lee County Courthouse by Gabriel Carrera, Senior Associate, Wiss, Janney, Elstner Associates, Inc., Austin, TX Download the PDF
Current Research in Concrete Pavements (ACI Spring Convention, April 2013, Minneapolis, MN)
This session provides insight into current research regarding concrete paving. The intended audience includes decision makers, engineers, material suppliers, public agencies, and contractors. The session includes discussion of current issues and innovations related to concrete pavement design, construction techniques, environmental challenges, quality control equipment, and the use of new materials.
- A Review of Durability of Joints by Peter C. Taylor, Engineer, National CP Tech Center, Ames, IA Download the PDF
- Rigid Pavement Design: Past, Present, and Future by Lev Khazanovich, Associate Professor, University of Minnesota, Minneapolis, MN Download the PDF
Responsibilities of the New Concrete Professional (ACI Spring Convention, April 2013, Minneapolis, MN)
This session will provide students who are about to join the practice of engineering and young professionals just starting out with tools to help them meet their responsibilities as new professionals.
- Some Novel Techniques for Enhancing Student Learning by Zachary C. Grasley, Assistant Professor, Virginia Tech, Blacksburg, VA Download the PDF
- Role-Playing in the Classroom to Prepare the New Concrete Professional by Luke M. Snell, Eminent Scholar, Western Technologies Inc., Tempe, AZ Download the PDF
- Make Your Résumé Pop! by Stephen Malits, Principal, Cagley and Associates, Silver Spring, MD Download the PDF
- Mastering the Knowledge You AREN’T Taught in School by James J. Ernzen, Associate Professor, Arizona State University, Tempe, AZ Download the PDF
Portland-Limestone Cements: A Technology to Improve the Sustainability of Concrete (ACI Spring Convention, April 2013, Minneapolis, MN)
The construction products of tomorrow will require not only durability but also sustainability. Buildings and infrastructure will be measured by cost, quality, and environmental impact. Portland-limestone cements are products that can help the concrete industry achieve its goal of concrete being the product of choice. This session will cover the past, present, and future of limestone cements.
- Portland-Limestone Blended Cements in ASTM C595/AASHTO M240: Specification Requirements and Environmental Benefits by Paul D. Tennis, Manager, Product Standards & Technology, Portland Cement Association, Fort Mill, SC Download the PDF
- Concretes Made Using Portland-Limestone Cement: Comments on Performance and the Impact on Sustainability by W. Jason Weiss, Professor, Purdue University, West Lafayette, IN Download the PDF
- Evaluation of Portland-Limestone Performance Cements (ASTM C1157) in Colorado and Utah Transportation and Commercial Projects 2007 to Current by Brooke W. Smartz, Technical Service Engineer; and Todd Laker, Senior Technical Service Engineer, Holcim (US) Inc., Parker, CO Download the PDF
- Using Limestone Cement to Build a Future for a 100-Year-Old Cement Plant by Gary F. Knight, Technical Service Engineer, Lehigh Hanson, Doraville, GA Download the PDF
Hot Topic Session: Responsibility in Concrete Construction (ACI Spring Convention, April 2013, Minneapolis, MN)
The responsibility and authority for concrete construction works is sometimes not as clear as we would like. ACI Committee 132, Responsibility in Concrete Construction, has prepared a session to discuss the duties and authorities of all parties on a construction project. Perspectives from many of the parties will be given in short presentations followed by a panel discussion with the attendees.
- Introduction, History and Overview of Committee 132 Document by Jeffrey W. Coleman, Attorney at Law, The Coleman Law Firm LLC, Minneapolis, MN Download the PDF
- Responsibility for Sustainability and What Happens if Goals Are Not Met: “Leed—i—gation” by Julie K. Buffenbarger, Engineering & Architectural Specialist, Lafarge, Medina, OH Download the PDF
- Responsibility and the Prescriptive vs. Performance Specification: What Can We Learn from the Canadian Model? by Casimir Bognacki, Chief of Materials, The Port Authority of New York & New Jersey, Jersey City, NJ
- Responsibility for Mix Design by Kevin MacDonald, Vice President of Engineering Services, Beton Consulting Engineers LLC, Prior Lake, MN Download the PDF
In Honor of Dick Stehly: Increased Beneficial Use of Fly—History, Accomplishments, and Challenges (ACI Spring Convention, April 2013, Minneapolis, MN)
This session is intended to honor the significant contributions of ACI Past President Dick Stehly with regard to increasing the beneficial use of fly ash in concrete in the United States. The session will provide a perspective on fly ash use from the vantage point of different stakeholders and will provide a historical and forward-looking perspective on issues related to increased beneficial use of coal fly ash in portland-cement concrete.
Field Measurements of Form Pressure Exerted by Self-Consolidating Concrete (ACI Spring Convention, April 2013, Minneapolis, MN)
These presentations will report on the latest information regarding the measurement of lateral pressure exerted by self-consolidating concrete (SCC). Examples include extensive field studies carried out on shear walls, column, and wall elements in building construction and infrastructure rehabilitation projects. Comparison between field measurements and various design models, including those proposed in ACI 347, CSA A23.1, and DIN, will be highlighted. Fresh concrete properties affecting formwork pressure and the decay in pressure until pressure cancelation are highlighted, and new test methods that can be used to evaluate these characteristics are illustrated.
- Thixotropy of SCC and Its Effects on Formwork Pressure by Eric P. Koehler, Senior R&D Engineer, Verifi LLC, Cambridge, MA Download the PDF
- Effect of Concrete Constituents and Mixture Parameters on Thixotropy and Formwork Pressure of SCC by Ahmed F. Omran, Postdoctoral Fellow, University of Sherbrooke, Sherbrooke, QC, Canada Download the PDF
- Comparison of Various Approaches to the Prediction of Formwork Pressure of SCC by Peter H. Billberg, Senior Researcher, Strängbetong, Stockholm, Sweden Download the PDF
- Test Methods to Evaluate Structural Build-Up of SCC and Influence on Formwork Pressure by Kamal H. Khayat, Professor, Missouri S&T, Rolla, MO Download the PDF
- Formwork Considerations and Cautions at the Job Site by Eric Peterson, Sr. Superintendent, Webcor Builders Download the PDF
Innovative Structural Slab Practices (ACI Spring Convention, April 2013, Minneapolis, MN)
Innovative structural slab construction practices have taken the efficiency of traditional slab systems to new heights. This session discusses state-of-the-art practices in voided-slab technology construction. The concept centers on removing “concrete” from the middle of the slab where it is not structurally efficient, reducing the dead load by as much as 35% and thus allowing for large clear spans and efficient overall slab thicknesses. Several projects currently under construction in the United States will be discussed as case studies.
- Voided Slabs—Then and Now by Mike Mota, Ph.D., P.E., F.ASCE, Vice President of Engineering, Concrete Reinforcing Steel Institute (CRSI) Download the PDF
- New Trends – Case Studies: Miami Art Museum, UW LaBahn Arena, and Harvey Mudd College by Michael Russillo, President, Cobiax USA Inc., Dedham, Massachusetts
- LaBahn Hockey Arena, University of Wisconsin—A Case Study by Dan Windorski, Structural Engineer, GRAEF, Madison, WI
- Guidelines for Design of Voided-Slab Systems by Attila B. Beres, Senior Structural Engineering Consultant, CRSI, Los Angeles, CA
Emerging Technologies (ACI Fall Convention, October 2012, Toronto, ON, Canada)
The “Emerging Technologies” Technical Sessions will focus on new and innovative materials and technologies that are currently being implemented in the concrete construction industry. Presentation topics include introduction of portland-limestone cement in Canada; advances in the evaluation of long-term concrete durability; and successful application of new approaches to concrete condition assessment, repair, and rehabilitation. Speakers will discuss materials and technologies with potential to increase the sustainability of concrete. The session, organized by the local convention committee, will include a Canadian perspective from industry, academic, and public agency representatives.
- Concrete Pavements Containing Portland-Limestone Cement and Supplementary Cementing Materials—Performance Review after 3 and 4 Years by Ashlee Hossack, Ph.D. Candidate, University of Brunswick, Frederickton, NB, Canada Download the PDF
- The Dig Down Below Toronto Union Station—80-Year-Old Concrete Augmented with Modern Technology by Hassan Saffarini, Structural Engineering Manager, NORR Limited, Toronto, ON, Canada Download the PDF
- Photocatalytic Concrete Field Trial on an Ontario Freeway by David Rhead, Concrete Engineer, Ontario Ministry of Transportation, Downsview, ON, Canada Download the PDF
- Pre-Packaged High-Performance Concrete Used for Bridge Replacement by William Clements, Technical Services Representative, King Packaged Materials Company, Burlington, ON, Canada Download the PDF
- Recent and Ongoing Research and Development Results in Shotcrete Technology by Marc Jolin, Assistant Professor, Laval University, Quebec City, QC, Canada Download the PDF
- Development and Use of Rapid-Setting Self-Consolidating Concrete for Bridge Repairs by Jacques A. Bertrand, President, Ambex Concrete Technologies, Inc., Laval, QC, Canada Download the PDF
- Evaluating Concretes Using Rapid Resistivity Measurements for Fluid Penetration Resistance by R. Doug Hooton, Professor, University of Toronto, Toronto, ON, Canada Download the PDF
- Alkali Reactivity of Reclaimed Concrete Aggregate: Evaluation, Testing, and Preventative Measures by Medhat H. Shehata, Associate Professor, Ryerson University, Toronto, ON, Canada Download the PDF
- Zinc Oxide Retarder by Michael A. Caldarone, FACI, Vice President, Engineering Manager, Tourney Consulting Group, LLC, Kalamazoo, MI Download the PDF
- Beneficial Hydration Synergies of Portland-Limestone Cements by Tim Cost, Senior Technical Service Engineer, Holcim (US) Inc., Canton, MS Download the PDF
- Durability and Debond Evaluation of High-Rise Concrete Buildings Using Infrared Thermography by C. S. Poon, Professor of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Download the PDF
Introduction to the Concrete Repair Code (ACI 562) Webinar
In this 1-hour webinar cosponsored by ACI and ICRI, Lawrence F. Kahn (past Chair of ACI Committee 562, Evaluation, Repair, and Rehabilitation of Concrete Buildings) and Keith Kesner (Chair of ACI Committee 562) present a 1-hour overview of the development and organization of the new ACI 562 concrete repair code. The webinar includes an overview of the contents, reasons for and motivation behind the development of the Repair Code, the overall philosophy and organization of the material, and the future direction of the Repair Code and related educational material development.
View webinar recording Download the PDF
- Lawrence F. Kahn, Professor of Structural Engineering, Georgia Institute of Technology
- Keith Kesner, Senior Associate, WDP & Associates, P.C. (WDP), South Norwalk, CT
Advancements in the Use of Building Information Modeling (BIM) Systems (ACI Fall Convention, October 2012, Toronto, ON, Canada)
The Building Information Modeling (BIM) session will demonstrate a general acceptance of this new technology within the architectural/engineering/construction (AEC) industry as the way forward in the full integration of design, construction, and facilities management. Presentations will include examples of successful implementation into real-life projects—to move beyond viewing BIM as a standalone documentation approach.
- The WindEEE Dome—The Demonstration of the Successful Implementation by Marwan A. Kishek, Senior Structural Engineer, NORR Limited, Toronto, ON, Canada Download the PDF
- BIM + Robotic Total Station: Field Test for Cast-in-Place Concrete Construction by Julian Kang, Associate Professor, Texas A&M University, College Station, TX Download the PDF
- BIM Implementation Techniques in a Design-Build Mental Health Project by Thomas Strong, Director, Virtual Construction, EllisDon Corporation, Mississauga, ON, Canada Download the PDF
- Leveraging Structural BIMs to Increase Efficiency by Mike Buckley, Practice Leader for Structures, Halsall Associates, Toronto, ON, Canada Download the PDF
- Transitioning to BIM for Structural Design by Vincent Cadoret, Senior Applications Expert, IMAGINiT, Mississauga, ON, Canada Download the PDF
Joint KCI-ACI Session: International-Level Research, Practice, and Partnerships (ACI Fall Convention, October 2012, Toronto, ON, Canada)
The Korea Concrete Institute (KCI), in collaboration with ACI, will host a panel of international experts in the fields of mega concrete structures, high-performance technologies, and historical and stateof- the-art perspectives on structural concrete. KCI intends to promote international partnership and collaboration as well as inform participants on the historical and latest breakthroughs related to concrete and concrete design codes by presenters from Asia, North America, and other continents. Researchers and engineers who attend will have the opportunity to learn more about recent exciting progress of international-level research and practice.
- Practical Research in Tall High-Rise Buildings in the U.S. by Thomas Kang, Assistant Professor, Seoul National University, Seoul, Korea Download the PDF
- Structural Application of BIM for Construction of Tall RC Buildings Focusing on Movement Prediction and Monitoring by Bohwan Oh, Chief Researcher, Daewoo Engineering and Construction Company Ltd. Download the PDF
- Performance-Based Seismic Design of Tall Building: A World View by Ronald Klemencic, President, Magnusson Klemencic Associates, Seattle, WA Download the PDF
Analysis and Design Issues in Liquid-Containing Structures (ACI Fall Convention, October 2012, Toronto, ON, Canada)
The objective of this session is to present the latest analytical procedures, experimental findings, and construction practice issues related to liquid-containing structures (LCS). In these structures, issues related to crack and leakage control criteria under hydrostatic and seismic loading are of main concern. An improved understanding of the behavior of these types of structures is necessary to ensure safe and cost-effective standards. As such, simplified design procedures based on performance criteria can be developed to design and construct LCS efficiently and economically.
- Bond Strength of Diaphragm—Shotcrete Interface in Vertical Direction for AWWA D110, Type III Tanks by Sanjay S. Mehta, Senior Structural Engineer, Preload Inc., Hauppauge, NY Download the PDF
- Introduction of ACI 350.5, Specification for Environmental Engineering Concrete Structures by Charles S. Hanskat, Managing Principal, Hanskat Consulting Group, Northbrook, IL Download the PDF
- Dynamic Earth Pressure—Myths, Realities, and Practical Ways for Design by Carlos Arturo Coronado, Structural Engineer, Bechtel Power, Frederick, MD Download the PDF
- Shrinkage and Temperature Reinforcement in Environmental Structures by Steven R. Close, Principal Engineer, Jorgensen & Close Associates Inc., Golden, CO Download the PDF
- Crack Control in Two-Way Reinforced Concrete Panels by Armin Ziari, Postdoctoral Fellow, Ryerson University, Toronto, ON, Canada Download the PDF
Means and Methods of Evaluating Reinforced Concrete Structures (ACI Fall Convention, October 2012, Toronto, ON, Canada)
The main objective of this session is to present a broad perspective on the important issues related to the evaluation of concrete structures.
- Let’s Be Practical: Tips, Tricks, and Ideas to Make Field Investigations Better by Lawrence Homer Taber, Structural Engineer, Black & Veatch, Overland Park, KS Download the PDF
- Condition Assessment and Concrete Repair Strategies at Water Treatment Structures by Stephen W. Foster, Associate II, Wiss, Janney, Elstner Associates, Inc. Austin, TX Download the PDF
- Assessment of Concrete T Beams Strengthened with Enlarged Reinforced Section by Hayder A. Rasheed, Associate Professor, Department of Civil Engineering, Kansas State University, Manhattan, KS Download the PDF
- Condition Assessment of an Overlaid Bridge Deck Using Non-Destructive Testing Methods by James Donnelly, Consultant, Wiss, Janney, Elstner Associates, Inc., Northbrook, IL Download the PDF
The Economics, Performance, and Sustainability of Internally Cured Concrete (ACI Fall Convention, October 2012, Toronto, ON, Canada)
In recent years, significant advancements have been made to use internal curing not only to mitigate autogenous shrinkage but also to enhance the in-place concrete performance. The objectives of this session are to assess the economics, performance, and sustainability of internal curing in various concrete applications. The following topics will be covered: mixture proportioning, internal curing methods, hydration impacts, volume change effects, mechanical properties, durability aspects, life-cycle cost analysis, impact on sustainability, and case studies that document the use of internal curing.
- Internal Curing: Lessons from Yesterday and Hope for Tomorrow by W. Jason Weiss, Professor, Purdue University, West Lafayette, IN Download the PDF
- Effect-Processing Variables on the Efficiency of Eucalyptus Pulp Fiber for Internal Curing by Passarin Jongvisuttisun, Graduate Student, Georgia Institute of Technology, Atlanta, GA Download the PDF
- Field Performance of Internally Cured Concrete Bridge Decks in New York State by William H. Wolfe, Norlite Corporation Download the PDF
- Prediction of Drying Shrinkage for Internally Cured HPC by Tengfei Fu, Student, Oregon State University, Corvallis, OR Download the PDF
- Using Internal Curing to Mitigate Early-Age Cracking and Increase the Performance of Reinforced Concrete with Respect to Corrosion by W. Jason Weiss, Professor, Purdue University, West Lafayette, IN Download the PDF
- The Genesis, Evolution, and Accelerated Use of Internal Curing by Ronald E. Vaughn, Senior Sales Engineer, Northeast Solite Corporation, Wynantskill, NY Download the PDF
- Mass Production and Utilization of Self-Curing Cement in Thailand by Wilasa Vichit-Vadakan, Senior Researcher, Siam Cement Group, Bangkok, Thailand Download the PDF
- Case Studies of Internal Curing of Bridge Decks in the Greater Cleveland Area by Norbert J. Delatte, Assistant Professor, Cleveland State University, Broadview Heights, OH Download the PDF
- Modeling of Internal Curing with SAP at Meso- and Macro-Level by Mateusz Wyrzykowski, Postdoctoral Research Fellow, Swiss Federal Laboratories for Materials Science and Technology, Dubendorf, Switzerland Download the PDF
- Optimizing the Sustainability of Concrete through Internal Curing by John P. Ries, Technical Director/President, Expanded Shale, Clay and Slate Institute, Salt Lake City, UT Download the PDF
- Internal Curing of Low Water-Cement Paste with Jute Fiber for Prevention of Autogenous Shrinkage by Mitsuo Ozawa, Assistant Professor, Gifu University, Gifu, Japan Download the PDF
- Design and Construction of an Internally Curing Slab by Erik Holck, Denver Water Download the PDF
- Early-Age Stress Development of Internally Cured Concrete by Benjamin E. Byard, University of Tennessee at Chattanooga, Soddy-Daisy, TN Download the PDF
- Chloride Transport Measurements for a Plain and Internally Cured Concrete Mixture by Carmelo Di Bella, Master’s Student, Purdue University, West Lafayette, IN Download the PDF
Shrinkage-Compensating Concrete—Past, Present, and Future (ACI Fall Convention, October 2012, Toronto, ON, Canada)
Shrinkage-compensating concrete is made with an expansive cement or expansive component system in which initial expansion can offset strains caused by drying shrinkage. It can reduce or eliminate cracking due to drying shrinkage. In this manner, shrinkage-compensating concrete can increase the durability of concrete structures, meet serviceability requirements, and meet performance-based specifications. This session will highlight current developments in shrinkage-compensating concrete—presenting new research in shrinkage-compensating concrete—and discuss how shrinkage-compensating concrete can meet the future needs of our industry.
- History of Type K Shrinkage-Compensating Cement by Edward K. Rice, President, CTS Cement Manufacturing Company, Los Angeles, CA Download the PDF
- 600 Bridges without Cracks by Edwin McLean, Engineer/Sales Manager, CTS Cement Manufacturing Company, Columbia, IL Download the PDF
- Behavior of Type K Shrinkage-Compensating Concrete under Various Forms of Mechanical Restraint by Seth Roswurm, Student, University of Oklahoma, Norman, OK Download the PDF
- Experiences on the Use of Component G in México by Alma L. Reyes, Latin America Technology Manager, The Euclid Chemical Company, Mexico City, Mexico Download the PDF
- Dimensional Stability of Type K Concrete Slabs-on-Ground by Shideh Shadravan, Lecturer, Cornell University, Ithaca, NY Download the PDF
- The Use of Type K Shrinkage Compensating Concrete (SCC) in an Underground Water Tank by Kyle R. Renevier, Student, University of Oklahoma, Norman, OK Download the PDF
- Joint Reduction Using Type K Shrinkage-Compensating Concrete by Edwin A. Mclean, Engineer Sales Manager, CTS Cement Manufacturing Company, Columbia, IL Download the PDF
- Revolution in Shrinkage Compensation by Jason Barnes, Green Umbrella Download the PDF
Reinforced Concrete Columns with High-Strength Concrete and Steel Reinforcement (ACI Fall Convention, October 2012, Toronto, ON, Canada)
Practicing engineers increasingly favor the use of high-strength concrete and reinforcement in their design. However, the use of very-high-strength materials is currently limited by ACI and in many parts of the world, specifically in high seismic regions. This session will include recent research and engineering applications of high-strength materials.
- Numerical Estimates of the Seismic Response of Building Structures Reinforced with High-Strength Steel by Jeffrey Rautenberg, Associate II Engineer, Wiss, Janney, Elstner Associates, Inc., Emeryville, CA Download the PDF
- Shear Behavior of Reinforced Concrete Columns with High-Strength Steel and Concrete under Low Axial Load by Yu Chen Ou, Associate Professor, Taipei City, Taiwan ROC Download the PDF
Emerging Technologies in the Concrete Industry (ACI Fall Convention, October 2012, Toronto, ON, Canada)
This session will present overviews of newer technologies currently or soon to be impacting the concrete industry. They are in various stages of development with various levels of implementation. The presentations are by individuals both well-versed in these technologies and directly involved in their implementation and further development.
The Art of Designing Ductile Concrete in the Past 50 Years: The Impact of the PCA Book and Mete A. Sozen (ACI Fall Convention, October 2012, Toronto, ON, Canada)
These sessions aim to disseminate information related to the development and evolution of design philosophy and detail earthquake-resistant concrete buildings in the past 50 years. Given the fact that many fundamental principles of earthquake-resistant design of concrete structures were first laid out in Design of Reinforced Concrete Buildings for Earthquake Motions, a 1961 PCA book by Blume et al., emphasis will be placed on the role this book had on subsequent design practice. Also, as a key participant in these developments as a researcher and educator, as well as a champion promoter of the design principles set forth in this book, the proposed sessions also aim to highlight the role of Professor Mete A. Sozen in shaping current design practice for earthquake-resistant concrete construction.
- A Prescient Axiom: The Formative Influence of the Substitute Structure Method by Terrence Paret, Senior Principal, Wiss, Janney, Elstner Associates, Inc., Emeryville, CA Download the PDF
- Reflecting on Ductile Concrete: A Perspective from Zone 0 by James O. Jirsa, Janet S. Cockrell Centennial Chair in Engineering, University of Texas, Austin, TX Download the PDF
- The Art of Ductile Design of Concrete Beam Column Connections and Structural Walls by Sharon Wood, University of Texas, Austin Download the PDF
- Detailing for Controlling Shear Strength Decay in RC Members: From Stirrups to Fiber Reinforcement by Gustavo J. Parra-Montesinos, University of Wisconsin Download the PDF
- Impact of the Blume, Newmark, and Corning Text on the Development of a Composite Core-Wall System for Use in Earthquake-Resistant Tall Buildings by Michael E. Kreger, Professor, Purdue University, West Lafayette, IN Download the PDF
- Asking the Right Questions by Mete A. Sozen, Kettlehut Distinguished Professor, Purdue University, West Lafayette, IN Download the PDF
- Drift Control as the Goal—The Case of the Colombian Code by Luis E. García, Partner and President, Proyectos y Diseños Ltda, Bogota D.C., Colombia Download the PDF
- Design and Detailing of Nonrectangular Walls by Beth Brueggen, Associate III, Wiss, Janney, Elstner Associates, Inc., Irving, TX Download the PDF
- Design of Multistory Concrete Buildings for Earthquake Motions by Jack P. Moehle, T.Y. and Margaret Lin Professor of Engineering, University of California at Berkeley, Berkeley, CA Download the PDF
Site Casting New Form: Inspiring Function to Respond (ACI Fall Convention, October 2012, Toronto, ON, Canada)
The site-cast method of forming, casting, and erecting precast buildings in what is more commonly known as tilt-up has matured worldwide to staggering displays of form that challenge modern designers to see function in new light. Tilt-up is evolving a new architectural style unique to its own brand of construction.
- Monumental Tilt-Up—Structures that Inspire by J. Edward Sauter, Executive Director, Tilt-Up Concrete Association, Mount Vernon, IA Download the PDF
- Evolution of Form Sets Sights on the New "Box" by Kimberly Waggle Kramer, Director of Graduate Studies, Kansas State University, Manhattan, KS Download the PDF
- Dramatic Global Examples of Form Inspiring Function by James R. Baty II, Technical Director, Tilt-Up Concrete Association, Mount Vernon, IA Download the PDF
Introduction of Revised Specification for Shotcrete and Other Shotcrete Development (ACI Spring Convention, March 2012, Dallas, TX)
This session will introduce the revised “Specification for Shotcrete” and discuss coordination of the guide to the specification. Other ACI Committee 506, Shotcreting, projects will also be discussed.
- Background Behind the Revisions to ACI 506.2, Specification for Shotcrete by Philip T. Seabrook, Director, Phiz Engineering Ltd., Vancouver, BC, Canada Download the PDF
- Guide to Shotcrete by Lars F. Balck, Senior Vice President, The CROM Corporation, Asheville, NC Download the PDF
- Evaluating/Assessing Encapsulation of Reinforcing in Shotcrete by James A. Ragland, Principal Consulting Engineer, Ragland, Aderman, & Associates, Inc., Baton Rouge, LA Download the PDF
- Service-Life Prediction of Shotcrete by Louis-Samuel Bolduc, Engineer, CEP Forensic Consulting Inc., Quebec, QC, Canada; and Patrick Power, Laval University Download the PDF
The Art of Thermal Mass Modeling for Energy Conservation in Buildings (ACI Spring Convention, March 2012, Dallas, TX)
Energy efficiency concerns are driving material selection decisions as designers and building developers embrace green building strategies like never before. This session reviews the design process as it relates to energy modeling tools and how thermal mass and construction system selection are integrated into the design process. It identifies and describes appropriate simulation tools that integrate concrete and masonry construction into building design to optimize energy efficiency. Case studies that address computer modeling programs and thermal mass will be presented. The energy modeling process and several modeling methods will be explained. Specific attention will be given to how and where thermal mass was integrated into the design.
- Thermal Mass Modeling—How We Got Where We Are by Jeff S. Haberl, Professor, Texas A&M University, College Station, TX Download the PDF
- Building Code Treatment of Thermal Mass in Energy Modeling by Stephen V. Skalko, Manager of Regional Codes and Standards, Portland Cement Association, Skokie, IL Download the PDF
- The State-of-the-Art in Building Modeling Software by Jian M. Zhang, Commercial Building Energy Analyst, Pacific
Northwest National Laboratory, Richland, WA Download the PDF
- Implications for Building Energy Modelers and Their Needs by Medgar Marceau, Building Science Consultant, Morrison Hershfield, Bellevue, WA Download the PDF
- Cost-Effective, Energy-Efficient School Design by William M. McGinley, Professor, University of Louisville, Louisville, KY Download the PDF
- Thermal Mass Simulation Accuracy and Design Considerations by Linda Lam, Associate, Transsolar, Inc., New York, NY Download the PDF
- Natural Ventilation Cooling by David Springer, President, Davis Energy Group, Davis, CA Download the PDF
- New York Multifamily Developer Saves Operating Costs through Energy Modeling by James Farny, Program Manager of Masonry/Specs Products, Portland Cement Association, Skokie, IL Download the PDF
International Session, Structural Concrete: An Art Form (ACI Spring Convention, March 2012, Dallas, TX)
Tying into the convention theme, this session will review the work of some eminent pioneers and present protagonists of the art of concrete construction, followed by a discussion of the recent trend to merge architecture and structural engineering. Emphasis is placed on new visions and instruments in the domains of morphogenesis and the computational optimization of structures. The session is also tied into the International Lunch Lecture, which is devoted to the presentation of Pier Luigi Nervi’s work.
Concrete Columns in High-Rise Buildings (ACI Spring Convention, March 2012, Dallas, TX)
Designers face a different set of requirements—one that is beyond strength and serviceability requirements— when designing columns in tall buildings. Designers face challenges such as optimizing column size under the heavy loads of tall buildings, long-term time-dependent deformations, using high-strength and high-performance concrete, and the effect of the second-order deformation. This session is intended to address issues that concern engineers involved in the design and construction of tall buildings. Researchers and professionals involved in code development will also benefit from the topics discussed.
Design and Construction of Concrete Tanks for Refrigerated Liquefied Gas Containment (ACI Spring Convention, March 2012, Dallas, TX)
This comprehensive session on the design and construction of concrete tanks for refrigerated liquefied gas containment with a primary focus on large-scale LNG tanks. The sessions will start with an introduction to concrete LNG and RLG tanks and move into detailed coverage of the provisions of the new ACI 376 Code Requirements for Design and Construction of Concrete Structures for the Containment of Refrigerated Liquefied Gases and Commentary. Finally, the session will include presentations on the construction of several concrete LNG tanks around the world.
Physical Salt Attack on Concrete (ACI Spring Convention, March 2012, Dallas, TX)
The focus of these presentations is on concrete deterioration due to the crystallization of salts (for example, sodium sulfate and sodium carbonate) in pores near drying faces/evaporative zones. The scope involves theoretical, experimental, and modeling aspects and field case studies from geographic locations, such as hot, arid environments, where this damage mechanism is a significant concern. This session should be of particular interest to concrete practitioners and researchers.
Total Water Control (ACI Spring Convention, March 2012, Dallas, TX)
The presentations will focus on practical aspects and technologies to improve concrete water control during production, delivery, and finishing and the impact of water control on concrete production costs, project costs, and overall job quality.
Architectural Concrete in Hot Weather (ACI Spring Convention, March 2012, Dallas, TX)
Hot weather concreting presents unique problems for design and construction. These problems can be exaggerated on projects that include architectural concrete.
- Hot Weather Concrete Specification Choices to Achieve Architectural Concrete Results by Richard Szecsy, President, Texas Aggregates and Concrete Association, Austin, TX Download the PDF
- NEOS Building Plaza Rehabilitation—Architectural Concrete under Hot Weather Conditions by Fernando I. Buxo, President, Techno Engineering, Luquillo, PR Download the PDF
- National Zoo Asia Trail/Elephant Trails by William Thompson, Technical Services Manager, Vulcan Materials Company, Springfield, VA Download the PDF
Innovations in Chemical Admixture Technology as Related to Sustainability (ACI Spring Convention, March 2012, Dallas, TX)
The presentations in this session will focus on how new developments in chemical admixtures contribute to sustainable construction. When considering the lifetime environmental impact of a building material from extraction, production, construction, operation, demolition, and recycling, concrete is an excellent choice for sustainable construction. Data and project profiles demonstrate how chemical admixtures reduce the environmental impact of concrete during production, assist in producing ecologically friendly concrete technologies for sustainable structures, and/or decrease environmental burden by increasing the service life of structures.
- Influence of Polycarboxylate Ether Polymers (PCE) on Sustainability in Concrete Production by Ketan R. Sompura, Product Engineer, Sika Corporation, Lyndhurst, NJ Download the PDF
- Hydration-Controlling Admixture Technology Provides Sustainable Concrete Performance for 25 Years by Joseph A. Daczko, Product Line Manager, BASF Construction Chemicals, Cleveland, OH Download the PDF
- Combinations of Polycarboxylate Ethers and Lignosulfonates in Chemical Admixtures for Special Performance by Deepak S. Kanitkar, Deputy General Manager, Chembond Chemicals Ltd., Mumbai, India Download the PDF
Recent Advances in ASR Test Methods and Understanding Mitigation Mechanisms (ACI Spring Convention, March 2012, Dallas, TX)
The requirements for an ideal ASR test method are that it should be rapid, reliable, and capable of determining the influence of aggregate reactivity, alkali availability, and exposure conditions. None of the currently available or commonly used methods meet all of these criteria. The current approach of ASR testing and the mitigation of the damaging effects of ASR depends heavily on accelerated mortar-bar methods and the formulation of prescriptive mixture designs.
- Alkali-Aggregate Reaction: What Our Current Approach Tells Us and What It Doesn’t by Toy S. Poole, Senior Principal Scientist, CTLGroup, Austin, TX Download the PDF
- A Proposed New Test Method for Determining ASR Potential: The Concrete Cylinder Test by Andy Naranjo, Transportation Engineer, Texas Department of Transportation, Austin, TX Download the PDF
- Relations between ASR Expansion and Average Water Content in Mortar Bars Exposed to Dry Ambient Atmospheres by Mitsunori Kawamura, Professor Emeritus, Kanazawa University, Kanazawa, Ishikawa, Japan Download the PDF
- Can Acoustic Emission Detect Alkali Silica Reaction Earlier than Other Tests? by Mohammad Pour-Ghaz, North Carolina State University Download the PDF
Composite and Modular Structures (ACI Spring Convention, March 2012, Dallas, TX)
The objective of this session is to present the latest methods of analysis and design, applicable codes and standards, connections, testing, construction, and inspection of composite or steel plate-reinforced concrete modular structures or components.
- Fused Coupling Beams in Coupled Core Walls by Steven J. Mitchell, Graduate Student, University of Cincinnati, Cincinnati, OH Download the PDF
- Out-of-Plane Behavior of SC Composite Beams by Kadir Sener, PhD Candidate, Purdue University, West Lafayette, IN Download the PDF
- Design of Steel-Plate Composite (SC) Walls for Combined Force and Moment Demands by Amit H. Varma, Associate Professor, Purdue University, West Lafayette, IN Download the PDF
The Art of Concrete (ACI Spring Convention, March 2012, Dallas, TX)
This session focuses on the aesthetic features of concrete, including its use in buildings, bridges, and flatwork. The presentation will emphasize success in the design, specification, and supply of architectural concrete. The session will highlight several prominent DFW buildings that incorporate architectural concrete features.
- Color, Pattern, and Texture: A Concrete Surface Design System by Scott Balch, President, Bomanite Texas, Dallas, TX Download the PDF
- Beneath the Aluminum Skin of the Wyly Theatre by Jeff Wagner, Director and Superintendent, McCarthy Building Company, Dallas, TX Download the PDF
- Dallas Cowboy Stadium by Craig Abbott, Project Manager, Manhattan Construction, Dallas, TX Download the PDF
- Making Architectural Concrete Work by James M. Shilstone Jr., Concrete Technologist, Command Alkon, Inc., Plano, TX Download the PDF
- Natural Grey Concrete Surfaces for Visual Quality and Sustainability by Mark J. Bloschock, Senior Vice President, VRX, Inc., Plano, TX Download the PDF
- The Art of Polishing Concrete by Tim G. Taylor, President, American Concrete Technologies, Fort Worth, TX Download the PDF
Quality Control and Robustness of SCC (ACI Spring Convention, March 2012, Dallas, TX)
The first part of this session focuses on the material characteristic of robustness, which is defined as the insensitivity of self-consolidating concrete’s (SCC’s) fresh properties to material changes or batching errors during production. The second part of this session examines the effective use of existing and new concrete production equipment and monitoring techniques to consistently produce quality SCC.
- Use of Viscosity-Modifying Admixtures to Enhance Robustness of SCC by Kamal H. Khayat, Professor, Missouri University of Science and Technology, Rolla, MO Download the PDF
- Fresh Property Responses of Powder-, VMA-, and Combination-Type SCC to Varying Aggregate Moisture by Peter H. Billberg, Senior Researcher, Swedish Cement and Concrete Research Institute, Stockholm, Sweden Download the PDF
- The effective use of Moisture Equipment to control the water content during SCC Production by Neal Cass, Technical Sales Manager, Hydronix Ltd. Download the PDF
- The Use of the Viscoprobe to Control SCC Rheology during Production by Niels H. Nielsen, Manager, Convi ApS, Odense, Denmark Download the PDF
- A Newly Developed Probe for Measuring the Rheology of Concrete Inside a Ready Mixed Drum by Denis Beaupre, Managing Director, IBB Rheology, Quebec, QC, Canada Download the PDF
Post-Earthquake Repairs (ACI Spring Convention, March 2012, Dallas, TX)
This session will focus on case histories of rapid repair projects, challenges facing owners with a damaged structure, and the repairs required to use a structure after a seismic event. Emphasis is placed on projects with challenging timelines or conditions that have necessitated the use of unique technologies or approaches to facilitate the repairs.
- Post-Earthquake Repair and Structural Characterization of a Parking Structure in Christchurch, New Zealand by Matthew Schoettler, University of California-Berkeley Download the PDF
- FRP Laminates for Post-Earthquake Repair of Columns in 2 Hours by Murat Saatcioglu, Vice Dean, University of Ottawa, Ottawa, ON, Canada Download the PDF
- Repair of Structural Walls Severely Damaged after Chilean 2010 Earthquake by Fernando Yanez, Director, Material Testing Laboratory (IDEM), University of Chile Plaza, Santiago, Chile Download the PDF
- Repair of Concrete Bridges Damaged in Chile by the February 27, 2010, M8.8 Chile Earthquake by Daniel Ortiz, Structural Engineer, TECNOAV S.A., Santiago, Chile; Pablo Fuertes, Fibrwrap Construction; and Alejandro Farias, Tiempo Nuevo Ltda. Download the PDF
- Seismic Retrofit Using Externally Applied Post-Tensioning Tendons by Kenneth B. Bondy, Consulting Structural Engineer, West Hills, CA Download the PDF
- Earthquake Repair of Circular Reinforced Concrete Columns by Sarah E. Witt, Senior Project Engineer, FYFE Company LLC, San Diego, CA Download the PDF
- The Performance of Concrete Structures in the Canterbury Earthquakes: Lessons to Be Learned and the Future of Concrete Buildings by Desmond K. Bull, Technical Director, Holmes Consulting Group, Ltd., Christchurch, New Zealand Download the PDF
- Repair of R/C Buildings Damaged in Viña del Mar during the 27 February M8.8 Maule Earthquake by José Restrepo, Professor of Structural Engineering, University of California San Diego, La Jolla, CA Download the PDF
- Emergency Repairs for Concrete Buildings Immediately after the February 2011 Christchurch Earthquake by Kenneth J. Elwood, Associate Professor, University of British Columbia, Vancouver, BC, Canada Download the PDF
- Seismic Repair of Reinforced Concrete Columns through Transverse Prestressing by Murat Saatcioglu, Vice Dean, University of Ottawa, Ottawa, ON, Canada Download the PDF
Hope & Schupack Corrosion Symposium, Part 1 (ACI Spring Convention, March 2012, Dallas, TX)
The Hope & Schupack Corrosion Symposium is in honor of two distinguished members of ACI Committee 222, Brian Hope and Morris Schupack, who have made great contributions in the field of metal corrosion in concrete. Engineers, scientists, researchers, inspectors, technicians, academics, and materials manufacturers and suppliers will benefit from this symposium, which will highlight our past accomplishments and present a direction for the future. Subject areas covered in this symposium include, but are not limited to, the following: 1) mechanism of corrosion of reinforcing steel in concrete; 2) identifying, investigating, and quantifying corrosion; 3) corrosion control measures for new and existing structures; and 4) innovative materials and testing techniques.
- Tribute to Brian Hope, PhD, P. Eng., FACI by Carolyn M. Hansson, Professor, University of Waterloo, Waterloo, ON, Canada Download the PDF
- Morris Schupack’s Contributions to the Field of Corrosion of Metals in Concrete by Andrea J. Schokker, Professor and Head of Civil Engineering, the University of Minnesota-Duluth, Duluth, MN Download the PDF
Symposium Honoring James O. Jirsa’s Contributions in
Structural Concrete: A Time to Reflect, Part 4: Joints (ACI Spring Convention, March 2012, Dallas, TX)
During the last 45 years, Professor James O. Jirsa has had a long and distinguished career as a Professor of civil engineering and as a student advisor at the University of Nebraska, Rice University, and the University of Texas at Austin. He has been at the forefront of structural engineering by making outstanding contributions to concrete research and design. Most notably, his contributions to reinforced concrete include his work in slabs, shear, bond and development length, and the seismic strengthening of reinforced concrete elements and systems. An ACI Honorary Member, Jirsa is a Past President of the Institute, a former Board member, and a Past Chair of many technical committees, including the Technical Activities Committee (TAC); ACI Subcommittee 318-F, New Materials, Products, and Ideas; and Joint ACI-ASCE Committees 352, Joints and Connections in Monolithic Concrete Structures, and 408, Development and Splicing of Deformed Bars; and has been a member of ACI Committee 318, Structural Concrete Building Code since 1982. Students, researchers, practicing engineers, and contractors are expected to attend. The material presented will cover state-of-the-art information in the aforementioned areas.
- Historical Development of Design Provisions for Reinforced Concrete Beam-to-Column Connections by James K. Wight, Professor, University of Michigan, Ann Arbor, MI Download the PDF
- Lessons Learned from the 2011 Tohoku, Japan, Earthquake by Shunsuke Otani, Professor Emeritus, University of Tokyo, Tokyo,
Japan Download the PDF
Symposium on Integrated Cement-Based Pavement Solutions, Part 2: Roller-Compacted Concrete Pavements (ACI Spring Convention, March 2012, Dallas, TX)
The use of roller-compacted concrete (RCC) has extended beyond heavy-duty pavements. It is now being used for streets, county roads, department of transportation (DOT) highway shoulders, and parking lots. Improvements in mixture design and construction techniques have resulted in a smoother, tighter surface. Ready mixed concrete producers are teaming with asphalt paving contractors to provide another pavement option for streets, local roads, and parking facilities. This session will cover design and construction aspects, including several case studies. It should be of interest to designers, paving contractors, DOT officials, and ready mixed concrete producers.
- Overview of Roller-Compacted Concrete Pavements: Applications, Design, and Construction by Wayne S. Adaska, Director, Public Works, Portland Cement Association, Skokie, IL Download the PDF
- Producing Roller-Compacted Concrete from a Ready Mix Plant by Frank Lennox, Manager of Marketing Services, Buzzi Unicem USA, Chattanooga, TN Download the PDF
- A Contractor’s Perspective on Roller-Compacted Concrete by Matthew J. Munsick, Project Manager, Morgan Corporation, Piedmont, SC Download the PDF
- U.S. Army Corps of Engineers Experience with Roller-Compacted Concrete Pavements by David W. Pittman, Director, Geotechnical and Structural Laboratory, U.S. Army Corps of Engineers, Vicksburg, MS Download the PDF
- Port of Houston’s Bayport Terminal Uses RCC for Integrated Pavement Solution Approach by Matthew W. Singel, Specialty Pavements Engineer, Cement Council of Texas, Hurst, TX Download the PDF
- Use of Roller-Compacted Concrete for Low-Volume Roads by Christopher R. Tull, President, CRT Concrete Consulting, LLC, Fishers, IN Download the PDF