Improving concrete mix designs through aggregate optimization is critical to achieve the concrete and cement industry goal of carbon neutrality by 2050. Reclaimed asphalt pavement (RAP) and recycled concrete aggregates (RCA) are potentially economically and environmentally advantageous materials in some applications and will promote preservation of raw material resources. TRB hosted a webinar on Thursday, April 25, 2024 from 2:00 PM to 3:30 PM Eastern that focused on aggregate optimization for concrete mix designs as well as RAP and RCA applications and how each impacts sustainability of aggregates.
This webinar was a follow on to TRB Webinar: Aggregate Sustainability—Production held on May 15, 2023.
This webinar was sponsored by TRB’s Standing Technical Committee on Aggregates.
The slides are available. Please contact trbwebinar@nas.edu for a link to the recording. There may be a $90 fee.
 
Webinar agenda and presenters

• Aggregate optimization for concrete mix designs – James Mack, CEMEX
• Surface aggregate classification of reclaimed asphalt pavement – Sheng Hu, Texas A&M University
• Sustainable use of recycled concrete aggregates in new concrete – Matthew Adams, New Jersey Institute of Technology
• Question and answer session moderated by Edith Arambula Mercado, Texas A&M University

The first 60 minutes of the webinar were for presentations and the final 30 minutes were reserved for audience questions.
 
Learning Objectives
At the end of this webinar, participants can:

• Use RCA as a replacement for natural aggregates in concrete mixtures
• Lower the embodied greenhouse gases in concrete and improve duration by utilizing improved aggregate optimization
• Identify potential Surface Aggregate Classification A RAP aggregates

 
Professional Development Hours
This webinar was delivered as a scheduled – e-learning live event and is categorized within RCEP as Technical, Health and Safety.
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.