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 and recording are available.
Webinar agenda and presenters
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:
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.