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Browse from hundreds of recorded presentations from ACI Conventions and other concrete industry events.

This Week's Featured Presentation

Performance Limit States of Reinforced Concrete Filled Steel Tube Drilled Shafts
by Diego A. Aguirre-Realpe, North Carolina State University

Session details

Performance-Based Design (ACI Fall 2017 Convention, Anaheim, CA)
This session aims to provide the current knowledge in performance-based design of bridges. Bridges are a critical component of our infrastructure system and failure of bridges is a safety issue. More progress has been made in performance-based design in seismic analysis of buildings than that of bridges. AASHTO seismic requirements are based on the level of ductility of structural members, importance of the structure, level of deformation, and soil conditions. On the other hand, performance-based design is based on having bridge performance achieve defined performance criteria such as strength, ductility, or deformation. The session contains presentations of experimental and/or analytical research focusing on the performance-based design of bridges and bridge components.

Upcoming Presentations

March 25 – 31

Low-Shrinkage Fiber-Reinforced Concrete for Improved Crack Control and Durability
by Amir Bonakdar, The Euclid Chemical Company

Session details

Influence of Early-Age Properties on Crack Development and Long-Term Durability—Bridge Decks (ACI Fall 2017 Convention, Anaheim, CA)
The causes for concrete pavement cracking and how they are related to the development of early-age properties and their effect on long-term durability will be explored during this session. This includes:

    • The effect of mixture design (including materials used and proportion of materials) on early-age properties and bridge deck and/or concrete pavement cracking
    • The influence of construction practices on early-age properties and bridge deck and/or concrete pavement cracking
    • The impact of specifications on early-age properties and bridge deck and/or concrete pavement cracking
    • The relation between bridge deck and/or concrete pavement cracking caused by early-age properties development and the reduction of long-term durability
    • Early-age measurement techniques that can evaluate early-age properties that are most related to bridge deck and/or concrete pavement cracking
    • Quality assurance practices to prevent cracking
    • Case studies

 

April 1 – 7

Evaluating Crack-Reduction Technologies for Settlement Cracking in Concrete Bridge Decks
by James D. Lafikes, University of Kansas; and Rouzbeh Khajehdehi, Muzai Feng, Eman Khalid Ibrahim, Matthew O’Reilly, and Dave Darwin, University of Kansas

Session details

Influence of Early-Age Properties on Crack Development and Long-Term Durability—Bridge Decks (ACI Fall 2017 Convention, Anaheim, CA)
The causes for concrete pavement cracking and how they are related to the development of early-age properties and their effect on long-term durability will be explored during this session. This includes:

    • The effect of mixture design (including materials used and proportion of materials) on early-age properties and bridge deck and/or concrete pavement cracking
    • The influence of construction practices on early-age properties and bridge deck and/or concrete pavement cracking
    • The impact of specifications on early-age properties and bridge deck and/or concrete pavement cracking
    • The relation between bridge deck and/or concrete pavement cracking caused by early-age properties development and the reduction of long-term durability
    • Early-age measurement techniques that can evaluate early-age properties that are most related to bridge deck and/or concrete pavement cracking
    • Quality assurance practices to prevent cracking
    • Case studies

 

April 8 – 14

Modification to ASTM C157 to Measure Early-Age Deformation of Concrete Specimens
by Muzai Feng, University of Kansas; and Eman Khalid Ibrahim, Rouzbeh Khajehdehi, James D. Lafikes, Matthew O’Reilly, and David Darwin, University of Kansas

Session details

Influence of Early-Age Properties on Crack Development and Long-Term Durability—Bridge Decks (ACI Fall 2017 Convention, Anaheim, CA)
The causes for concrete pavement cracking and how they are related to the development of early-age properties and their effect on long-term durability will be explored during this session. This includes:

    • The effect of mixture design (including materials used and proportion of materials) on early-age properties and bridge deck and/or concrete pavement cracking
    • The influence of construction practices on early-age properties and bridge deck and/or concrete pavement cracking
    • The impact of specifications on early-age properties and bridge deck and/or concrete pavement cracking
    • The relation between bridge deck and/or concrete pavement cracking caused by early-age properties development and the reduction of long-term durability
    • Early-age measurement techniques that can evaluate early-age properties that are most related to bridge deck and/or concrete pavement cracking
    • Quality assurance practices to prevent cracking
    • Case studies

 

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