Skip to main content

23-3 RAS as an FDR Mechanical Stabilizer

Project Dates: October 1, 2023 - June 30, 2025

Project Description: 

The use of recycled asphalt shingles (RAS) in transportation infrastructure has been extensively studied throughout the United States and elsewhere. An impediment in the wide-spread use of RAS in asphalt concrete has been the increased premature cracking potential of such mixtures due to the aged and brittle nature of asphalt binder in RAS. This has resulted in restrictions on RAS usage in hot- and warm-mixed asphalts by many agencies. The Vermont state law (10 V.S.A. § 6605m) requires that asphalt shingles, predominantly generated as “Architectural Waste”, be recycled, when a recycling facility exists within 20 miles. Due to concerns associated with their usage in asphalt concrete layers of pavement structures, their use within lower pavement layers needs to be explored.




Factsheet                    Presentation                    Other


Final Report                   Archived Documents

Related Symposium Page

2023 Symposium Lite

Eshan Dave and Jo Sias (UNH)

Champion(s)/TAC members:
Ian Anderson, Callie Ewald, Aaron Schwartz, Brandon Kipp, Heather Voisin, Aric Brown, Dan Horton (ASR Systems)


Mentioned in MassDEP C&D Webinar Series: Asphalt Shingle Markets and Asphalt Binder Blending Research - Dan Horton, ASR Systems, November 16 2023


**Posters, Fact Sheets, Presentation Recordings and Other Materials are prepared for our September Research and Innovation Symposium each year. This page includes the latest materials. Check back in September for updated materials related to this project.