Asphalt mixtures containing recycled asphalt materials (RAM) may benefit from the use of a recycling agent (RA) to improve cracking resistance. TRB hpsted a webinar on Monday, March 13, 2023 from 1:00 PM to 2:30 PM Eastern that described existing practices for use of RAs in asphalt mixtures with RAM. Presenters reviewed NCHRP Synthesis 586: Use of Recycling Agents in Asphalt Concrete Mixtures and share key findings and major challenges for agencies that are looking to start or continue using the materials. Presenters also shared surveys and interviews from state departments of transportation (DOTs) and Canadian Provincial Transportation Agencies.

This webinar is sponsored by TRB’s National Highway Cooperative Research Program.

The slides are linked in the meeting materials. View the recorded webinar below.

Webinar agenda and presenters

• Introduction and synthesis review – Runhua Zhang, University of Wisconsin
• Survey and case examples – Eshan Dave, University of New Hampshire
• Key takeaways and challenges – Jo Sias, University of New Hampshire
• Question and answer session moderated by Adam Hand, University of Nevada, Reno

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:

• Describe the current practices and challenges in the use of RAs

Professional Development Hours

Professional engineers (PEs) who register and attend the entire webinar as an individual will be awarded 1.5 Professional Development Hours (PDHs). TRB’s webinar program awards PDH credits only to the registered individual, and not to other members of a group that view the webinar together. To be eligible for the credits, individuals must remain signed in for the entire webinar, including for any question and answer session following the presentations.

This webinar will be delivered as a scheduled – e-learning live event and is categorized within RCEP as Technical, Health and Safety.

Please check with your licensing board to ensure that TRB webinar PDHs are approved by your board.

TRB will report credits earned to the Registered Continuing Education Program (RCEP). Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, D.C., 20005.