Sessions & Events

 

All sessions and events take place in Pacific Standard Time: PST (GMT-8). On-demand sessions will be available for viewing in the convention platform under "On-Demand Content" within 24-48 hours of the session premiere. Please note, on-demand sessions are not available for CEU credit. * Denotes on-demand content.


Convention Highlights

Sunday, April 2, 2023


6:30 AM - 7:31 AM

Morning yoga classes will be offered for those who are interested in putting a little balance into a hectic week. Led by yoga teacher Kimberly Kayler, this intro to yoga class requires no experience. Registration is not required, and a limited quantity of yoga mats will be provided.
* Please consult your physician to determine if you are fit for this type of activity.


8:00 AM - 9:00 AM

First time convention attendees are invited for a continental breakfast and brief session to orient you to the week ahead. Attendees will have the opportunity to meet other first time convention attendees, connect with convention mentors, and learn about what The ACI Concrete Convention has to offer.


8:00 AM - 10:00 AM

Moderators: Mohammed Galal Alnaggar, Moneeb Genedy

This session creates a forum for researchers and practitioners interested in the opportunities enabled by 3D printing to create a sustainable future of the built environment through the implementation of sustainable materials and the infusion of bio-inspired designs. The session blends contributions on latest research developments, current research trajectories, and practical applications.

Learning Objectives:
(1) Understand the current and future trends in sustainable alternative cementitious materials for 3D printing:
(2) Illustrate how 3D printing enables mimicking of biological architectures with optimal performance;
(3) Demonstrate the potential reduction of carbon footprint through the 3D printing of novel materials;
(4)


8:00 AM - 10:00 AM

Moderators: Prasada R Rangaraju, Farshad Rajabipour

As the supply of conventional supplementary cementitious materials (SCMs) continues to fall behind concrete industry’s demand, new sources must be identified and evaluated to allow production of high-quality and durable concrete. This session reports on the latest research related to the use of harvested fly ash (HFA) and ground bottom ash (GBA) as concrete SCMs. The presentations will include studies on the chemical and physical characteristics of these ashes, their pozzolanic reactivity, and their performance in concrete in terms of their impact on fresh, mechanical, and durability properties of concrete mixtures. The audience will become familiar with this potentially valuable new SCM source.

Learning Objectives:
(1) Compare the properties and performance of harvested fly ash (HFA) and ground bottom ash (GBA) with other traditional concrete SCMs;
(2) Evaluate the impact of HFA and GBA on fresh and hardened properties of concrete;
(3) Analyze the impact of HFA and GBA to enhance concrete durability;
(4) Discuss methods for assessing the reactivity of HFA and GBA and other SCMs.


8:00 AM - 10:00 AM

Moderators: G Terry Harris, Kari L Yuers

This session will present uses of chemical admixtures in unique applications that will enable the use of marginal materials as well as additional supplementary cementitious materials to create concrete mixtures with improved sustainability.

Learning Objectives:
(1) Understand the early history and development of chemical admixtures and how they impacted sustainability;
(2) Understand the changes in admixture technology in the last 20 years and how they allow the concrete producer to develop mixtures never thought possible;
(3) Understand how new admixture technologies allow the concrete producer to use locally available "marginal" materials that reduce the gwp of the mix;
(4) Understand how chemical admixtures are used to allow the use of Supplementary Cementitious materials while still meeting the project specifications and schedule requirements.


8:00 AM - 10:00 AM

Moderators: Farshad Rajabipour, Nathan A Tregger

The field of concrete science and technology has recently experienced a surge of interest in using data science techniques (such as machine learning (ML), artificial intelligence (AI) and big data analysis) for the discovery, development and understanding of cementitious materials and processes. This session will focus on the application of data science techniques, including property prediction, materials characterization, materials simulation, and process analysis. More importantly, this session will discuss the imminent challenges and opportunities that will guide an effort to foster the development of a robust, data-informed concrete science ecosystem. The outcome of this session will be an understanding of the recent data science advances and the feasibility of their wider adoption in the concrete industry.

Learning Objectives:
(1) Describe the state of the art of data science techniques in concrete science and technology;
(2) Explain how data science advances concrete research and practice;
(3) Identify proper data science techniques for various applications;
(4) Discuss the key challenges and best practice recommendations.


8:30 AM - 3:30 PM

Students will eagerly form and construct fiber-reinforced bowling balls, hoping that they don’t strike out in competition against their peers. All will enjoy seeing the students knock down pins with their concrete bowling balls prior to loading their balls within an inch of failure. Student teams from around the world will be testing their mettle not only against each other but also against themselves, having predicted their performance in each evaluation category weeks before the competition. Testing will be performed in groups throughout the day, so be sure to swing by and join in the excitement. For more information on the competition and how to register, please visit www.concrete.org/students/studentcompetitions.


9:30 AM - 11:00 AM

Chaired by ACI Vice President Tony Nanni, Professor, University of Miami

The ACI International Forum provides an opportunity for convention attendees to meet and learn from ACI international partners, ACI chapter representatives, and ACI leadership. Attendees are encouraged to network and inquire about worldwide events, activities, initiatives, and common themes of interest to the concrete materials, design, and construction industry.


10:30 AM - 12:30 PM

Moderators: Mohammed Galal Alnaggar, Moneeb Genedy

This session creates a forum for researchers and practitioners interested in the opportunities enabled by 3D printing to create a sustainable future of the built environment through the implementation of sustainable materials and the infusion of bio-inspired designs. The session blends contributions on latest research developments, current research trajectories, and practical applications.


10:30 AM - 12:30 PM

Moderators: Prasada R Rangaraju, Farshad Rajabipour

As the supply of conventional supplementary cementitious materials (SCMs) continues to fall behind concrete industry’s demand, new sources must be identified and evaluated to allow production of high-quality and durable concrete. This session reports on the latest research related to the use of harvested fly ash (HFA) and ground bottom ash (GBA) as concrete SCMs. The presentations will include studies on the chemical and physical characteristics of these ashes, their pozzolanic reactivity, and their performance in concrete in terms of their impact on fresh, mechanical, and durability properties of concrete mixtures. The audience will become familiar with this potentially valuable new SCM source.

Learning Objectives:
(1) State the benefits and challenges with the use of HFA and GBA in concrete mixtures;
(2) Describe the influence of particle size on the reactivity of the HFA and GBA;
(3) Describe methods for evaluation of HFA & GBA for use as SCM;
(4) Assess Waste-to-Energy (WTE) ash and its use in concrete.


10:30 AM - 12:30 PM

Moderators: G Terry Harris, Kari L Yuers

This session will present uses of chemical admixtures in unique applications that will enable the use of marginal materials as well as additional supplementary cementitious materials to create concrete mixtures with improved sustainability.

Learning Objectives:
(1) Learn about new admixtures that allow production of concrete with reduced powder contents while maintaining strength and workability;
(2) Understand how existing admixture technology can be used in a different way to enhance to sustainability of a concrete mixture;
(3) Learn about how admixtures can improve the consistency and reduce the variability of concrete performance;
(4) Understand how combining admixtures can further reduce the gwp of concrete mixtures.


10:30 AM - 12:30 PM

Moderators: Farshad Rajabipour, Nathan A Tregger

The field of concrete science and technology has recently experienced a surge of interest in using data science techniques (such as machine learning (ML), artificial intelligence (AI) and big data analysis) for the discovery, development and understanding of cementitious materials and processes. This session will focus on the application of data science techniques, including property prediction, materials characterization, materials simulation, and process analysis. More importantly, this session will discuss the imminent challenges and opportunities that will guide an effort to foster the development of a robust, data-informed concrete science ecosystem. The outcome of this session will be an understanding of the recent data science advances and the feasibility of their wider adoption in the concrete industry.

Learning Objectives:
(1) Describe the recent data science efforts to design advanced, sustainable concrete;
(2) Recognize the difference between data science models in concrete mixture design;
(3) Discuss the status of deploying data science in the concrete industry and the potential impact on sustainability;
(4) Identify research needs for data science to advance concrete science and technology.


11:30 AM - 1:30 PM

$50.00

Titile: Design and Construction of Building Using Wall-Column and Seismic Response Control System
Speaker: Yuji Isshiki
Design and a construction of a 10-story office building using wall-columns and seismic response control system are to be reported. This office building shown in below, is located in Fukuoka city, which is designed in 2020 by Taisei Corporation and the construction has been completed since August 2022. A new seismic response control system is installed in this building. Wall-columns and dampers are arranged in the core of the building intensively and perimeter RC frames are arranged. The dampers using low-yield steel (steel damper) absorb the seismic energy and minimize the damage to the main frame structure. Furthermore, a monitoring system of damage to the dampers is incorporated for the post-earthquake quick inspection. If necessary, the damaged dampers could be replaced for continuous occupancy.
The seismic behavior of the building was confirmed with non-linear static analyses and with non-linear dynamic analyses. The lateral load-carrying capacity of the building was set to be 1.25 times larger than minimum requirement of Building standard law. The effect of response control system was confirmed by the dynamic analyses using several seismic waves.


International Lunch Flyer


1:00 PM - 3:00 PM

Moderators: Mohammed Galal Alnaggar, Moneeb Genedy

This session creates a forum for researchers and practitioners interested in the opportunities enabled by 3D printing to create a sustainable future of the built environment through the implementation of sustainable materials and the infusion of bio-inspired designs. The session blends contributions on latest research developments, current research trajectories, and practical applications.


1:00 PM - 3:00 PM

Moderator: Eric S Peterson

The differences between lateral formwork pressure experienced when using self-consolidating concrete (SCC) versus conventionally vibrated concrete (CVC) will be covered in this session. The transitional boundaries between these two concrete categorizations will also be covered to some extent. The investigation of SCC formwork pressure over the past couple of decades has opened a wider discussion regarding the significance of concrete rheology (cementing materials dispersion and agglomeration-reversible properties) on formwork pressure development and decay (versus setting, hardening or irreversible properties). Models will be covered that use yield stress, viscosity, and thixotropy as important input parameters to predict lateral formwork pressure, while emphasizing the relevance of the traditional input parameters of concrete temperature and placement rate. The session's presentations will review and discuss existing pressure prediction models for both types of concrete and the means of characterizing concrete for lateral pressure. The purpose of the session is to establish a path forward for both SCC and CVC with respect to load calculation assumptions/risks and characterization of concrete mixtures to predict lateral pressure and to design vertical formwork safely and economically.

Learning Objectives:
(1) Compare the lateral pressure differences between self-consolidating and conventionally vibrated concrete (SCC and CVC);
(2) Describe the characterization of concrete mixtures with respect to predicting lateral pressure;
(3) Apply the use of sensors to monitor concrete pressure;
(4) Discuss the principle factors affecting pressure from both (SCC and CVC);
(5) Identify possible paths forward for Committee 347 with respect to design expressions and best practices for predicting pressure and designing formwork.


1:00 PM - 3:00 PM

Moderators: Lesley Suz Chung Ko, Mahmut Ekenel

To support ACI's expanding focus on technology and innovation, the CIC collaborates with the concrete community to further innovative solutions for industry-wide challenges, by effectively identifying new technology and helping to nurture and support emerging and mature technologies. The Council also works closely with ACI's Director of Concrete Technology to create a formal connection between Council work and ACI. The council is compromised of a diverse set of industry representatives - material suppliers, architecture & engineering firms, contractors, academic, owner and regulatory. CIC's objective is to identify technologies and innovations that are aligned with ACI and industry strategies and help implement their use when appropriate.

Learning Objectives:
(1) Discuss the ACI Foundation's Concrete Innovation Council and its mission;
(2) Identify technologies and innovations that are aligned with ACI and the concrete industry;
(3) Explain how to help adopt and implement innovations;
(4) Report on how the industry is conducting research and development on new technologies and innovations.


1:00 PM - 2:00 PM

Moderator: Luke R Pinkerton

In this mini session we will explore new ways engineers are measuring concrete material properties and designing with concrete. In both cases technology advancement is allowing for problems that previously were either very difficult to solve or impossible to solve now possible. Direct tension testing has always been challenging given the brittle nature of concrete. We will explore research being done at Missouri State to make this more practical using standard size specimens and standard test machines. Yield Line design for pavements and slabs on grade, originally proposed by Meyorhof in the 1960's involved complex math. New software implementations automate this process allowing for more efficient designs that also require less computations power than many finite element approaches. We will discuss these examples and open for discussion of other examples and needs for innovation in our field!

Learning Objectives:
(1) Introduce new concepts under development in material testing and structural analysis that have applications and potential benefits in plain structural concrete;
(2) Introduce the proposed ASTM method for concrete tensile performance of plain and reinforced concrete;
(3) Define design methods and its application in plain structural concrete design, including alternative forms of reinforcement;
(4) Understand benefits of automated yield line analysis of plain and reinforced structural slabs on grade, including alternative forms of reinforcement;
(5) Quantify the benefit of using alternative forms of reinforcement in conjunction with plain concrete to improve efficiency and sustainability of designs.


1:30 PM - 3:30 PM

Moderator: Sourabh Manjrekar


3:30 PM - 5:30 PM

Moderator: Somayeh Nassiri

Pavement design features such as joint spacing, base types, and pavement mixture design are typically set by practice and policy. However, this design strategy often results in over-designed concrete pavements or poor performance. The session's learning outcomes will be how pavement design features and materials can be optimized to reduce initial costs and CO2 emissions, as well as life cycle costs and lifetime CO2 emissions. The session would benefit the industry, departments of transportation, and academia.

Learning Objectives:
(1) Review where large environmental impacts are for concrete pavements;
(2) Reference where opportunities are to cut down greenhouse gas emissions for concrete pavements;
(3) Discuss how to enhance the sustainability of concrete pavements through engineering design;
(4) Discuss how to enhance the sustainability of concrete pavements through concrete mixture design;
(5) Identify design tools and optimization strategies for concrete pavements sustainability.


3:30 PM - 5:30 PM

Moderators: Pinar Okumus, Brock D Hedegaard

The objective is to discuss the latest methods available for predicting the field condition and deterioration of concrete bridge elements and systems. Accurate predictions of bridge condition are important because predictions can guide maintenance decisions, planning and asset management for bridge owners. The session will be of interest to researchers and practitioners in structural or material engineering as well as bridge owners.

Learning Outcomes:
(1) Bring awareness to the latest advancements on condition prediction methods;
(2) Outline the basis and expected accuracy of prediction methods;
(3) Discuss the intended uses of the prediction methods;
(4) Understand how field data and analytical methods can be used to assess structures.


3:30 PM - 5:30 PM

Moderators: Liberato Ferrara, Roberto Realfonzo

The session will provide an overview of the research currently going on in Italy on the topic of sustainability of concrete materials and structure, ranging from the use of alternative binders and recycled materials to structural repairs and interventions, non-metallic reinforcement, life cycle assessment of UHPC structures in aggressive scenario and of composite timber-concrete structures.

Learning Objectives:
(1) Relate the latest developments in the field of sustainable cement based materials production and strucutral applications;
(2) Analyze holistic approaches to the structural design of new structures in a durability and life-cycle integrated perspective;
(3) Report on the concept and design of retrofitting of existing structures for seismic, functional and durability upgrade, including cultural heritage;
(4) Illustrate a comprehensive overview of state-of-the-art research and applications on the vision of the Italian industry and academia on sustainability of concrete construction industry.


3:30 PM - 5:30 PM

Moderators: Larry Rowland, Kay Wille

Ultra High Performance Concrete (UHPC) has the potential to be a game changer in sustainable concrete design. This revolutionary product is altering how designers, producers and concrete professionals approach concrete. UHPC offers tremendous benefits to the construction industry due to its incredible versatility, strength and durability. While the structural and design benefits of UHPC are being defined and explained by ACI and a host of collaborating organizations throughout the world; the sustainable benefits of this material are not well known. This session will outline ways to reduce the environmental footprint of the product and how best to use it to leverage its inherent resilience and superior structural performance to achieve sustainability goals.

Learning Objectives:
(1) Explain widely accepted environmental benefits associated with the proper design and use of Ultra High-Performance Concrete;
(2) Relate how the durability and long service life of Ultra High-Performance Concrete can be leveraged to reduce maintenance and shrink a project's environmental footprint;
(3) Explain how alternative binders are used to reduce the carbon footprint of UHPC mixtures;
(4) Evaluate how multi-objective eco-efficiency indices are used to assess comparative UHPC materials and key strategies for optimizing results;
(5) Investigate and explain ways of applying the ultra high-performance characteristics of UHPC in structural design to reduce material volume while achieving better results.


4:00 PM - 5:00 PM

The ACI Student Forum provides an opportunity for student chapters and competition teams to exchange ideas and best practices. Student speakers will deliver presentations about their university activities and achievements. A limited number of presentations spots are available. Speakers may present as a group or an individual.


5:45 PM - 7:00 PM

The Opening Session is the official start to the Convention and will begin with a welcome address by ACI President Charles Nmai. Next, the emcee for the night will recognize new Honorary Members, Fellows, and 50-Year Members for their contributions to the concrete industry.


7:00 PM - 8:00 PM

Immediately following the Opening Session, attendees are invited to the exhibit hall for this evening reception. Congratulate ACI Awardees, reunite with colleagues, network with new acquaintances, and learn about the products and services offered by the exhibitors. A cash bar and light refreshments will be available.


8:00 PM - 10:00 PM

Moderator: Claire A Hiltz


8:30 PM - 10:00 PM

Student and Young Professionals Activities Committee (SYPAC) invites all students, young professionals, and convention mentors to a casual networking exchange following the Opening Reception. Attendees will establish connections with fellow young members. Prizes will be awarded during ice breaker activities.



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