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TRB Webinar: Entrained Air-Void Systems for Durable Highway Concrete

October 26, 2021

1:00 PM - 2:30 PM (EDT)

Past

Topics

Laboratory testing and field experience have shown that highway concrete should be properly air entrained to resist the action of freezing and thawing, particularly in wet climates. TRB hosted a webinar on Tuesday, October 26, 2021 from 1:00-2:30 PM Eastern that investigated requirements for the air-void system parameters of concrete used in highway pavements and structures. Presenters discussed the proposed modifications to the current AASHTO test methods for evaluating concrete resistance to freezing and thawing. They also examined innovative test methods to effectively characterize the air system in fresh concrete and identify the characteristics of the air-void system that are related to the performance of field concrete under freeze-thaw conditions.

This webinar features research from NCHRP Research Report 961: Entrained Air-Void Systems for Durable Highway Concrete.

The slides are linked in the meeting materials below. Click here to view the recording.

Webinar agenda and presenters

  1. Laboratory investigation of alternative test methods for air void systems: Peter Taylor, Iowa State University
  2. Field review of pavement performance as a function of air void systems: Hamed Sadati, California Department of Transportation
  3. Laboratory investigation of alternative freeze-thaw tests on hardened concrete: John Kevern, University of Missouri, Kansas City
  4. Question and answer session: Peter Taylor, Iowa State University

The first 60 minutes of the webinar will be for presentations and the final 30 minutes will be reserved for audience questions.

Learning Objectives

At the end of this webinar, participants will be able to:

  1. Identify requirements for the air-void system parameters of concrete
  2. Discuss innovative test methods for effectively characterizing the air system

Professional Development Hours

Professional Development Hours (PDHs) earned on completion of this program were reported to the Registered Continuing Education Program (RCEP). Certificates of Completion are issued to all participants via the RCEP.net online system. Complaints about registered providers may be addressed to RCEP, 1015 15th Street, NW, 8th Fl., Washington, DC, 20005.

Disclaimer

It is essential to the National Academies mission of providing evidence-based advice that participants in any of our meetings or events avoid political or partisan statements or commentary and maintain a culture of mutual respect. The statements and presentations during our meetings or events are solely those of the individual participants and do not necessarily represent the views of other participants or the National Academy of Sciences, which is a non-partisan, tax exempt organization that includes under its Charter the National Academy of Engineering and National Academy of Medicine, and that operates the National Research Council.

Contact

Contact us

TRB Webinar
TRBwebinar@nas.edu

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