2021 U.S. Scrap TIre Workgroup (USSTWG)

16 Knowledge Gaps Identified* Most states have limited-to-no-experience in RMA Modern asphalt mixture tests and specifications were not developed considering RMA - This could be a barrier in producing specifications in many states, hindering RMA adoption Pavement design software need a national-level effort to incorporate adequate design guidelines/factors for RMA * Per Dr. Bill Buttlar at University of Missouri - Columbia