Moderator: Norbert J Delatte
This session will include materials and testing considerations for pervious concrete, proper maintenance of pervious concrete pavements, and an innovative application of pervious concrete.
Learning Objectives:
(1) Evaluate how to use precast pervious concrete;
(2) Explain how to control moss on pervious concrete;
(3) Discuss pervious concrete testing and certification;
(4) Analyze the regulatory environment affecting use of pervious concrete.
Moderators: Ann Harrer, Paul E Gaudette
This session will discuss challenges associated with the assessment of historic concrete structures prior to repair. The session will cover additional considerations by designers during the assessment due to the unique challenges of historic or architecturally significant structures. Attendees should include students, designers, and contractors.
Learning Objectives:
(1) Discuss the history of concrete and its relevance in the assessment of concrete structures;
(2) Review common deterioration and distress conditions of concrete structures;
(3) Document building characteristics and conditions observed in order to develop and implement repair;
(4) Review approaches to historic concrete repair, including surface preparation, installation of formwork, development of the concrete mix design; and concrete placement, consolidation, and curing.
Moderators: Mohamed A Mahgoub, ALANA G GUZZETTA
The earth’s natural resources are being consumed at a very high rate for many years. The potential depletion of resources, CO2 emissions and high energy consumption rates in the process of production, increase the necessity of recycling. All sectors of the society are responsible for these concerns, specially the construction industry.
As a major construction material, concrete is increasingly judged by its environmental impacts and reusing the readily available concrete is becoming very important. Considering that much of the US infrastructures and urban buildings now require renovation and replacement, the concrete left behind can be a valuable source of aggregate for new concrete. Such concrete is usually called Recycled Aggregate Concrete. Through cost analyses, it is shown that using recycling concrete as aggregate for new concrete production can be a cost-effective method for construction.
Learning Objectives:
(1) Create public awareness of recycled concrete including its impact on reducing landfills and construction waste;
(2) Compare parameters of recycled aggregate concrete to natural aggregate concrete and evaluate the differences;
(3) Describe how recycled concrete can save natural resources and ecological environment leading to sustainable and greener world;
(4) Evaluate the effect of adding different construction waste materials to concrete and the effect of this on recycled concrete properties.
Moderators: Michael L Tholen, Phil Diekemper
An ACI Center of Excellence for Advancing Productivity is sponsoring two sessions covering the topics of productivity and constructability. The presentations at these sessions will focus on productivity struggles and achievements that can help engineers, contractors, owners, and material suppliers recognize and implement strategies that allow concrete construction to overcome years of stagnation in productivity. Speakers from many facets of the concrete construction community will present case studies, technologies, and practices that highlight both failed and successful attempts to impact productivity.
Learning Objectives:
(1) Discuss how PRO plans to address productivity and constructability issues in the concrete industry;
(2) Identify the productivity and constructability initiatives that are currently underway in the concrete construction industry;
(3) Recognize the importance of collaboration and understanding of everyone's roles in producing the most efficient concrete construction possible;
(4) Describe how uncoordinated and incomplete contract documents can impact productivity.
(5) Discover how productivity benchmarking in Brazil has advanced constructability of structural designs.
Moderators: Julie K Buffenbarger, Fouad H Yazbeck
These two sessions will explain how silica fume lends to heightened sustainable and resilient construction. License design professionals, contractors, producers, and students will learn how silica fume lends to the overall lowered embodied carbon in structures. Topics will include extending service life through enhanced durability with silica fume, reducing member size in design when using silica fume concrete, increasing particle packing in concrete mixtures (SCC and HPC), and reducing water and cementitious material content when using silica fume in concrete pumping. In addition, case studies will exemplify the lowered embodied carbon and sustainable and resilient benefits to construction projects.
Learning Objectives:
(1) Silica fume concrete increases the durability of concrete structures, lowering the overall embodied energy through increased service life;
(2) Including silica fume in concrete mixtures as an SCM can replace the concrete's portland cement content and lower the mixture's embodied energy;
(3) Using silica fume in concrete structures that can reduce specimen size, thus lowering the volume of concrete necessary and reducing the overall embodied energy of the structure;
(4) The design of long-life structures and effective life cycle management of existing structures will enable the construction of housing and infrastructure that contributes to the protection of the environment and ensure public safety, health, security, serviceability, and life cycle cost-effectiveness.
Moderators: Mohamed A Mahgoub, ALANA G GUZZETTA
Concrete is the world’s most widely used construction material. Yet, the production of portland cement, an essential constituent of concrete, leads to greenhouse gas emissions into the atmosphere. The production of one ton of portland cement clinker releases approximately one ton of CO2 and other greenhouse gases. Environmental considerations have been a major thrust for the sustainable development of the cement and concrete industries. A sustainable concrete structure is designed and built to have a positive environmental footprint during its entire life cycle. Concrete is increasingly being considered as a sustainable material owing to its low inherent energy requirements and little associated waste. Not only is it made from some of the most plentiful resources on Earth, it can also be made with numerous recycled materials and by-products and is itself entirely recyclable. Emerging breakthroughs in concrete technology have allowed producing ultra-high-performance concrete requiring less raw materials, along with structures that are much more durable to reduce maintenance, repair, and reconstruction.
Learning Objectives:
(1) Demonstrate how to evaluate recycled concrete mixtures with various waste-by-product and recycled materials;
(2) Recognize many different types of testing that could be performed on new concrete mixtures produced with recycled materials;
(3) Explain various methods to design and validate the concrete produced by new recycled materials;
(4) Specify emerging technologies in the concrete produced by recycled materials and its application in civil infrastructures.
Moderators: Denesha Price, Rusty Owings
First and second place winners of the Excellence in Concrete Construction Awards program will give a presentation on their winning project.
Learning Objectives:
(1) Develop an increased understanding of recent concrete design and innovations through exploration of the winning projects in the Excellence in Concrete Construction Awards;
(2) Discuss the ever-evolving economic, environmental and aesthetic demands that go along with concrete construction through an in-depth examination of the winning Excellence in Concrete Construction Award projects;
(3) Discuss the challenges and benefits related to concrete construction through an examination of recently completed projects that have won the Excellence in Concrete Construction Awards;
(4) Develop an increased understanding of the innovation and technological advances by looking at the project winners of the Excellence in Concrete Construction Awards that have inspired excellence in concrete design and construction around the world.
Moderator: Caitlin M Tibbetts
Roller-Compacted Concrete (RCC) pavements have been used for almost a half century, but recently have had major advancements which have expanded the potential applications for RCC. During this session, the advancements, benefits, usage breakdown, and resources available for practitioners for utilizing RCC will be discussed. This session will be of interest to owners, contractors, consultants, manufacturers, and educators.
Learning Objectives:
(1) Identify benefits and sustainability contributions of RCC pavements and inherent limitations of construction method;
(2) Define advances in RCC mixture design, volumetric behavior, jointing, and structural design;
(3) List the various RCC pavement applications, process trends, and breakdown of users;
(4) Explain how to design RCC pavements for roadways, parking facilities, and industrial pavements using PavementDesigner.
Moderators: Melinda G Reynolds, Rachel A Belcher
Awarded authors of papers published in 2022 will present winning papers. Awarded categories include: the ACI Concrete International Award, the ACI Symposium Volumes Award, the Mete A. Sozen Award for Excellence in Structural Research, the Wason Medal for Materials Research and the Wason Medal for Most Meritorious.
Learning Objectives:
(1) Present practical, objective methods to reduce congestion of reinforcement on engineering/contracting projects;
(2) Provide a solution to the challenge of improving the load rating of culverts that can be utilized by other culvert owners;
(3) Recognize that using the same strength reduction factor for all strut-and-tie model (STM) components promotes the relative likelihood of nonductile failure modes in deep beams;
(4) Quantify the benefits of using slag cement to reduce concrete temperature rise, especially in structural mass concrete members;
(5) Familiarize attendees with the new ACI 318 shear-reinforced breakout design equations.
Moderator: Julie K Buffenbarger
These two sessions will explain how silica fume lends to heightened sustainable and resilient construction. License design professionals, contractors, producers, and students will learn how silica fume lends to the overall lowered embodied carbon in structures. Topics will include extending service life through enhanced durability with silica fume, reducing member size in design when using silica fume concrete, increasing particle packing in concrete mixtures (SCC and HPC), and reducing water and cementitious material content when using silica fume in concrete pumping. In addition, case studies will exemplify the lowered embodied carbon and sustainable and resilient benefits to construction projects.
Learning Objectives:
(1) Sustainable and resilient design requires an integrated, long-term holistic view of all phases of the project: planning, designing, constructing, maintaining, operating, repair/rehabilitation, then final decommissioning and disposal at the end of its service life;
(2) Silica fume can assist in mitigating distress mechanisms that shorten the life of structures or increase the cost of ownership through increased maintenance or repairs;
(3) Enhancing structures' robustness, durability, longevity, disaster resistance, and safety can be accomplished with silican fume concretes, construction practices, and appropriate inspection and maintenance strategies;
(4) The increased emphasis on life cycle cost analysis (LCCA) for projects requires attention to the service life and durability of concrete structures, including costs of initial construction, continued maintenance, and eventual demolation or deconstruction.
Topic: Why Don't We Talk to One Another in Our Industry?
Speakers: Dan L. Baker & Jeffrey W. Coleman
Description:
Speakers will share their perspectives on the opportunities and obstacles to collaboration between project stakeholders. Speakers will share potential strategies that can help to avoid conflict & confrontation, unlocking the potential for improving construction productivity.
PRO's luncheon is being sponsored by Somero Enterprises Inc.
PREREGISTRATION IS REQUIRED TO ATTEND. Tickets may be purchased at the ACI Registration Desk up to 24 hours prior to the event, based on availability. Please notify the ACI Registration Desk if you have any dietary restrictions.
Moderator: Mervyn J Kowalsky
ACI 341 will be regularly hosting mini-sessions at each convention aimed at providing an opportunity for graduate students and early career individuals to present their research. We are coordinating this effort with the other ACI seismic committees.
Learning Objectives:
(1) Analyze the state of the art research conducted at universities in the realm of seismic design;
(2) Establish an avenue for early career researchers to convey their work and get them excited about ACI committee activities;
(3) Analyze the state of the art research conducted at universities in the realm of concrete bridge design;
(4) Create an opportunity to network with early career researchers in a more informal environment.
Moderators: Mohamed A Mahgoub, ALANA G GUZZETTA
Concrete is the world’s most widely used construction material. Yet, the production of portland cement, an essential constituent of concrete, leads to greenhouse gas emissions into the atmosphere. The production of one ton of portland cement clinker releases approximately one ton of CO2 and other greenhouse gases. Environmental considerations have been a major thrust for the sustainable development of the cement and concrete industries. A sustainable concrete structure is designed and built to have a positive environmental footprint during its entire life cycle. Concrete is increasingly being considered as a sustainable material owing to its low inherent energy requirements and little associated waste. Not only is it made from some of the most plentiful resources on Earth, it can also be made with numerous recycled materials and by-products and is itself entirely recyclable. Emerging breakthroughs in concrete technology have allowed producing ultra-high-performance concrete requiring less raw materials, along with structures that are much more durable to reduce maintenance, repair, and reconstruction.
Learning Objectives:
(1) Demonstrate how recycled concrete can significantly reduce CO2 emission which leads to more sustainable environment;
(2) List the factors that can affect the workability and strength of recycled concrete and how can we improve recycled concrete properties;
(3) Explain how recycled concrete can reduce the pollution resulted from transportation of debris to landfills and dumps;
(4) Recognize the properties of recycled concrete and developed guidelines for using recycled aggregate in concrete.
Moderator: Prannoy Suraneni
This session is aimed at integrating experiments and modeling to better understand concrete from material and structural aspects. Students, faculty, and professionals will attend to further their knowledge on both experiments and modeling.
Learning Objectives:
(1) Describe machine learning approaches for strength and performance prediction;
(2) Demonstrate understanding of optimization and statistical analysis methods for better explaining experimental results;
(3) Develop knowledge of thermodynamic modelling;
(4) Evaluate new materials, including 3D printed concrete and magnesia-based binders, and their testing.
Moderator: Richard Yelton
Boston is often referred to as the "Cradle of Liberty." But for the concrete enthusiast, the area could relabeled as the "Cradle of Concrete Innovation." In this mini-session, Committee 120 History has invited three local concrete experts who will lead an interactive experience describing how concrete producers, contractors, and design professionals worked to create many of the area's iconic structures.
Learning Objectives:
(1) Discover how to adopt concrete mixes to achieve a design professional's goals;
(2) Learn how concrete structures in Boston have fostered sustainable city development;
(3) Identify how concrete construction has evolved in Boston;
(4) Discuss the importance of documenting concrete in history, which can provide insights into a sustainable future.
Moderators: Sriramya D Nair, Pravin Saraswatula
The purpose of this session is to offer authors/speakers an open forum for presentation of recent technical information that does not fit into other sessions scheduled for this convention. Any aspect of structural analysis or design, concrete materials science, or construction, manufacturing, use, and maintenance and health monitoring of concrete structures and products can be presented.
Learning Objectives:
(1) Understand the relevance of slant shear tests to current design codes;
(2) Gain insights into use of FTIR in monitoring CaCO3 during carbonation;
(3) Learn about the importance of boundary reinforcement in precast concrete panels;
(4) Explore the factors affecting concrete permeability, carbonation in synthetic zeolite modified Portland cement, and the impact of denaturing chemicals on concrete's Freeze Thaw durability.
Moderators: Phil Diekemper, Michael L Tholen
PRO: An ACI Center of Excellence for Advancing Productivity is sponsoring two sessions covering the topics of productivity and constructability. The presentations at these sessions will focus on productivity struggles and achievements that can help engineers, contractors, owners, and material suppliers recognize and implement strategies that allow concrete construction to overcome years of stagnation in productivity. Speakers from many facets of the concrete construction community will present case studies, technologies, and practices that highlight both failed and successful attempts to impact productivity.
Learning Objectives:
(1) Review how construction documents affect reinforced concrete construction;
(2) Evaluate how to optimize structures based on the type of forming system to be used for construction;
(3) Investigate how quality control and quality assurance testing requirements can impact productivity;
(4) Assess the importance of productivity from the owner's perspective.
Moderators: Keila D Lombardozzi, Brian Carson
This mini session is a recurring event focused on the latest developments, case studies, and lessons learned in concrete constructability. Arguably, constructability is one of the most overlooked components of concrete project design and planning. Yet, if not properly addressed, it can result in a variety of issues during the construction phase of the project, including negative impacts on the project schedule and budget. Often, the devil lies in the details when it comes to constructible projects. This session will aim at discussing a variety of constructability-related topics that will be based on real-world experience and case studies.
Learning Objectives:
(1) Recognize recent developments in the area of concrete constructability;
(2) Describe frequent issues occurring on concrete projects that negatively impact constructability, schedules and project budgets;
(3) Identify potential constructability pain points and acquire proven strategies to prevent them from occurring;
(4) Evaluate the design behind complicated project elements and alternative methods to construct them.
Moderators: Mohamed ElBatanouny, Arezoo Imani
The session will begin with a brief introduction to the new 228.3R document, Guide for Visual Condition Surveys of Concrete. Subsequent speakers will present case studies and examples of new or existing methods for visual surveys or condition assessments.
Learning Objectives:
(1) Analyze the new 228.3R document, Guide for Visual Condition Surveys of Concrete;
(2) Discuss how visual survey data can be used to assess the current condition of a structure;
(3) Review potential uses of visual inspection to predict the effect of cracking and damage on the performance and/or durability of the structure;
(4) Define the role of visual inspection in maintenance scheduling and prioritization.
Moderators: Nathan A Tregger, Anton K Schindler
High strength and modulus of elasticity (MOE) are critical requirements for the high-rise buildings dotting our cities. Often with incredible steel rebar congestion, the use of self-consolidating concrete (SCC) is a common choice to ensure proper filling of column and floor forms. This session will discuss the challenges in achieving high strength and MOE that can arise when using SCC, including constructability, and quality control testing.
Learning Objectives:
(1) Recognize challenges when implementing high-strength concrete with high MOE requirements;
(2) Develop proper expectations and considerations when implementing a testing and acceptance program for high-strength concrete with high MOE requirements;
(3) Review example applications of high-strength concrete with high MOE requirements, including real case studies;
(4) Identify key protocols and pre-qualifications that contribute to successful implementation of high-strength concrete with high MOE requirements.
Moderator: Prannoy Suraneni
This session is aimed at integrating experiments and modeling to better understand concrete from material and structural aspects. Students, faculty, and professionals will attend to further their knowledge on both experiments and modeling.
Learning Objectives:
(1) Discuss supplementary cementitious materials and fillers, including model glass systems;
(2) Develop knowledge of reactive transport modeling;
(3) Demonstrate molecular dynamic approaches;
(4) Evaluate topics such as life-cycle analysis and multi-objective optimization.
Moderators: Sriramya D Nair, Pravin Saraswatula
The purpose of this session is to offer authors/speakers an open forum for presentation of recent technical information that does not fit into other sessions scheduled for this convention. Any aspect of structural analysis or design, concrete materials science, or construction, manufacturing, use, and maintenance and health monitoring of concrete structures and products can be presented.
Learning Objectives:
(1) Explore innovative solutions reshaping the ready-mix concrete industry;
(2) Learn about advanced Interface Shear Transfer test methods and feasability of using Natural Pozzolans and Reclaimed Fly Ashes in concrete;
(3) Gain insights into advanced machine learning models and deep learning techniques for predicting concrete properties and crack detection;
(4) Be introduced to probabilistic framework for life cycle assessment (LCA) of concrete pavements.
Faculty members and graduate students are invited to attend this informal reception for an opportunity to exchange ideas and network. Light hors d'oeuvres and a cash bar will be available.
It’s October 31st and you’re invited to a Spooky Soiree! Convention attendees and guests will enjoy an evening of networking, entertainment, and great food during the Concrete Mixer (with a ghoulish twist). Held at the Boston Convention and Exhibition Center, a heavy assortment of food and beverages will be provided. Dress code is business casual, but feel free to elevate your style with a supernatural (but keep it professional) costume twist!