Sessions & Events


Known globally as the world’s gathering place for advancing concrete, the ACI Concrete Convention is dedicated to bringing together the international concrete community to improve the design, construction, maintenance, and repair of concrete projects. Attendees can experience dozens of technical and educational sessions that provide insight into the latest concrete innovations, research, and case studies.


Featured Sessions

Legal Issues in Concrete Construction—Lessons Learned

This session will bring together individuals with extensive experience in litigation related to concrete construction to share their experiences as lawyers, expert witnesses, and engineers through case studies and experience-based recommendations. Moderated by Jeff Coleman, with speakers Randy Poston, Bill Rushing, Matt D’Ambrosia, and Jeff Coleman. Monday, March 29, 2021 (11:00 AM - 1:30 PM).

The Concrete Industry in the Era of Artificial Intelligence

This session will provide insight on the merit of using artificial intelligence (AI) in the concrete industry with focus on how to better the performance of concrete materials at ambient and elevated temperatures and showcase the substantial potential of using AI to improve design of concrete structures under traditional and fire conditions. Moderated by M. Z. Naser, with speakers Henry Burton, Andrew Fahim, Pouria Ghods, Aali Alizadeh, Tahmid Medhi, Hayder Rasheed, Alaaeldin Abouelleil, Eric Fletcher, Emilio Taenqua, Liberato Ferrara, Ali Al-Obaidi, S. Gupta, and M. Z. Naser. Monday, March 29, 2021 (4:00 PM - 6:30 PM).

Adjusting Workability of Successful 3-D Concrete Printing

This two-part session will highlight the importance of controlling fresh-state properties for the successful execution of 3-D concrete printing. Moderated by Nicos Martys and Scott Jones, with speakers Mohamadreza Moini, Jan Olek, Pablo Zavattieri, Jeffrey Youngblood, Gaurav Sant, Jason Timmons, Iman Mehdipour, Shang Gao, Hakan Atahan, Narayanan Neithalath, Mathieu Bauchy, Edward Garboczi, Samanvaya Srivastava, Wilson Ricardo Leal da Silva, Thomas Andersen, Nicos Martys, Scott Jones, William George, Timothy Wangler, Robert Flatt, Peter Stynoski, Eric Kreiger, Megan Kreiger, Viktor Mechtcherine, Karthik Pattaje, Chuanyue Shen, David Lange, Lex Reiter, Sooraj Nair, Manu Santhanam, Gaurav Sant, Narayanan Neithalath, Mohammed Sonebi, M. Dedenis, Sofiane Amziane, Arnaud Perrot, Joseph Biernacki, Hajar Afarani, Edward Garboczi, Newell Moser, and Ebrahim Nasr-Esfahani. Part 1: Sunday, March 28, 2021 (10:00 AM - 12:30 PM). Part 2: Sunday, March 28, 2021 (1:00 PM - 3:30 PM).

Impact of Hot Weather Conditions on Concrete Repair

This two-part session will assist contractors, material suppliers, and specifiers with practical information that can be used for planning, constructing, and designing successful hot weather repair projects. Moderated by Mike Faubel and Tarek Khan. Part 1: Thursday, April 1, 2021 (10:00 AM - 12:30 PM). Part 2: Thursday, April 1, 2021 (1:00 PM - 3:30 PM)

Productivity in the Concrete Industry—Why Has it Stagnated and How Can ACI Help?

Productivity in the U.S. construction industry has been flat for 50 years, while productivity of U.S. industry in general has nearly doubled in that same time frame. Why? And what can ACI do about it? This session will explore answers to these and other questions and will include presentations from designers and contractors offering their perspectives on how ACI can help confront this very important industry issue. Moderated by Cary Kopczynski, with speakers Oscar Antommattei, Mike Schneider, Mario Garza, Mike Tholen, and Cary Kopczynski. Tuesday, March 30, 2021 (11:00 AM - 1:30 PM)


Session & Event times are listed in Eastern Daylight Time: EDT (UTC-4). All sessions & events are included in convention registration.

To access all committee meetings, sessions, and special events, please register for the convention. Once registered, you can access the web-based convention at http://crowd.cc/acis21 or by downloading the convention app on your mobile device.

Convention Highlights

March 31, 2021


10:00 AM - 12:00 PM

Moderators: Larry D Olson, Rakesh Khan

The session will discuss the use of multiple nondestructive testing (NDT) methods for assessing the conditions of aging concrete bridges and how data fusion can be used to combine and “image” both visible surface conditions and unseen internal conditions. Thus it is anticipated that speakers will cover the use of a wide range of NDT methods for bridge decks, superstructure and substructure condition assessment and their fusion with one or more additional methods including: computer-based photographic mapping of cracking/spalling damage; infrared thermography; ground penetrating radar; acoustic/impact echo/surface waves scanning of decks; and, corrosion activity mapping with half-cell potential, resistivity and polarization methods.
Learning Objectives:
(1) List the full range of NDT methods for condition assessment of concrete bridges to characterize, map and image damaged bridge conditions such as corrosion induced deck delamination, cracking, spalling, void and honeycomb and basic thickness and elastic modulus determination;
(2) Identify emerging photograph image analysis techniques to automate mapping of cracking, spalling and other visible surface damage on bridge decks, beams, girders, columns and piers;
(3) State the steps and approaches to fuse data from 2 or more methods to image both surface damage conditions and internal damage conditions with data fusion approaches;
(4) Describe the integration of NDE data fusion studies with destructive coring for confirmation purposes and full data fusion integration of the laboratory testing information needed for bridge condition assessment such as chloride concentration profiles, phenolphthalein tests for carbonation depths; and strength test results.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


10:00 AM - 12:00 PM

Moderator: Pinar Okumus

The Open Topic Session is a forum for presenting recent technical information that could not be scheduled into other convention sessions.
Learning Objectives:
(1) Recognize experimental and analytical research methods and findings on reinforced concrete at material or structure scales;
(2) Discuss techniques to analyze, retrofit and test reinforced concrete structures;
(3) Describe concrete behavior and bond in various environmental conditions;
(4) Compare durability of concrete with virgin and recycled materials.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


10:00 AM - 12:00 PM

Moderator: Drew Burns

Early-age performance of slag cement with Type IL cement has been found to be equal to or better than with Portland cement from the same source. The alumina in the slag cement can react with more of the finely divided limestone to form additional carboaluminate hydrates that then results in reduced porosity and increased early-age strength. There is also reduced permeability, as indicated by ASTM C1202 test results.
While some early published papers indicated a potential concern for an increased risk of low-temperature thaumasite sulfate attack, our extensive long-term tests on concretes have shown that Type IL cement- slag cement combinations are as resistant to sulfate attack as Type I cement-slag cement combinations and more resistant than equivalent w/cm concretes made with Type V cements to both the ettringite and thaumasite forms of degradation.
This presentation will include discussion on these two topics and will also look at some recent projects with these materials. Speakers will walk through different reaction rates such as resistivity and diffusion with portland limestone cements, strength results and modeling.
Learning Objectives:
(1) Identify the differences in portland limestone cement, slag cement, and how they work to reduce the carbon impact of concrete;
(2) Analyze relevant research and data related to the use of slag cement and portland limestone cement;
(3) Explain how portland limestone cement and slag cement combinations create concrete structures that are more resistant to sulfate attack;
(4) Identify different testing methods and case studies to illustrate the benefits of using these materials.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


10:00 AM - 11:00 AM

Moderator: Stacey R McCann

This session will provide background on the creation of the new ACI 318 PLUS subscription along with guidance on how educators can navigate some of its key features and leverage it as a tool to improve students’ understanding of reinforced concrete design. Discussion will be included to allow for brainstorming ideas on how this platform could better enhance teaching ACI CODE-318-19. Speakers include Michael L. Tholen, Ph.D., P.E and Trey Hamilton Ph.D., professor emeritus at the University of Florida.
Learning Objectives:
(1) Describe how the design examples can be used as part of reinforced concrete design curriculum;
(2) Define the use and limits of the user notes function in ACI 318 PLUS;
(3) Describe how professor-created user notes can be shared with students to help them understand how reinforced concrete design relates to the code;
(4) Explain how the resource links can add depth to your students’ understanding of the code.

This session has been approved by AIA and ICC for 1 PDH (0.1 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


1:00 PM - 3:00 PM

Moderator: Jovan Tatar

The Open Topic Session is a forum for presenting recent technical information that could not be scheduled into other convention sessions.
Learning Objectives:
(1) Recognize bond behavior of FRP composite reinforcement;
(2) Discuss how to apply machine learning to solve important problems related to concrete structures;
(3) Introduce an alternative SCM;
(4) Summarize effects of cracking on corrosion of concrete bridge decks.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


1:00 PM - 3:00 PM

Moderators: Maria G Juenger, Feraidon Ataie

This session will showcase new information on the use of raw natural pozzolans in concrete mixtures. Natural pozzolans are seeing a resurgence as demand for supplementary cementitious materials for concrete increases. The role of these materials in concrete performance will be presented, including their impact on cement hydration and concrete strength and durability. Presentations will also highlight practical use of these materials in concrete construction. The intended audience includes engineers, contractors, researchers, and students interested in the performance of natural pozzolans.
Learning Objectives:
(1) Recognize new and emerging sources of supplementary cementitious materials for concrete production;
(2) Describe how pozzolans affect concrete early and late-age properties and durability;
(3) Differentiate between different types of raw natural pozzolans;
(4) Evaluate the properties of concrete containing raw natural pozzolans.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


1:00 PM - 3:00 PM

Moderators: Maria S Konsta, Mahmoud M Reda Taha

Nanotechnology has the potential to revolutionize the properties of concrete. Conversation in this session is designed to explore the impact of nanomodification on creating concretes with new functionalities, such as sensing and damage detection, self healing, energy harvesting, deicing applications, and so on. This session provides a unique opportunity for engineers, scientists, and industry leaders to learn and experience new concepts and novel research areas on the use of nanotechnology in cementitious materials and concrete.
Learning Objectives:
(1) Review recent advances and challenges in evaluating the sensing abilities and damage detection capabilities of nano-reinforced concrete;
(2) Summarize recent progress in experimental research and novel characterization techniques to understand multifunctionality of nano-reinforced cementitious materials;
(3) Discuss recent progress in experimental research and advanced characterization techniques to understand and improve durability of nano-reinforced cementitious materials;
(4) Review fundamental research for the development of concrete sensors and energy harvesting concrete.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


4:00 PM - 6:00 PM

Moderator: Vincent Lapointe

This session intends to present case studies or projects where innovative techniques were used to assess the condition of concrete structures and plan rehabilitation strategies. The techniques include nondestructive testing, corrosion measurements, modeling, and monitoring. The session is meant for engineers and practitioners.
Learning Objectives:
(1) Discuss advanced modeling techniques in the context of rehabilitation;
(2) Describe advanced monitoring systems in the context of rehabilitation;
(3) Summarize advanced corrosion mitigation approaches;
(4) Review case studies showing how and where they have been used and combined (synergy).

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


4:00 PM - 6:00 PM

Moderators: Eric Kreiger, Liberato Ferarra

The fabrication of novel reinforced concrete structures using digital technologies requires the definition of suitable strategies for reinforcement implementation. Reinforcement integration must be compatible with either the shape or the specific printing technique adopted for each structural element production. This session aims to provide the latest updates on opportunities and techniques using “reinforced concrete” for engineers, architects, and researchers actively involved in or simply interested in three-dimensional (3-D) printing with cementitious composites. These techniques have been developed to further expand the outreach of digitally fabricated concrete materials and structures.
Learning Objectives:
(1) Describe interaction between processing and orthotropy of mechanical performance of fiber reinforced 3D printed materials and systems;
(2) Identify techniques to integrate reinforcement between printed layers;
(3) Discuss the latest developments in terms of standards and code acceptance for 3D printed elements;
(4) Report the synergies in transnational initiatives aimed at fostering the development of 3D Printing with cement based materials.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


4:00 PM - 6:00 PM

Moderators: Maria S Konsta, Na Luna Lu

Nanotechnology has the potential to revolutionize the properties of concrete. Conversation in this session is designed to explore the impact of nanomodification on creating concretes with new functionalities, such as sensing and damage detection, self healing, energy harvesting, deicing applications, and so on. This session provides a unique opportunity for engineers, scientists, and industry leaders to learn and experience new concepts and novel research areas on the use of nanotechnology in cementitious materials and concrete.
Learning Objectives:
(1) Summarize electrothermic applications and de-icing capabilities of nano-reinforced concrete;
(2) Explain machine learning based concrete property monitoring;
(3) Validate numerical models using experimental conductivity data at the nanoscale;
(4) Identify detailed knowledge of nano reinforced ultra-high durable concrete.

This session has been approved by AIA and ICC for 2 PDHs (0.2 CEUs). Please note: You must attend the live session for the entire duration to receive credit. On-demand sessions do not qualify for PDH/CEU credit.


5:00 PM - 6:00 PM

Join ACI President Jeff Coleman for an evening of virtual networking during the President’s Reception. Coleman will begin the program with recognition to the individuals and organizations that have shown exceptional service and dedication to ACI, followed by networking in a fun and casual virtual environment.



Upper Level Sponsors

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