Performance testing of asphalt pavements with recycled asphalt shingles from multiple field trials

摘要

Transportation agencies have become increasingly interested in modifying hot mix asphalt (HMA) pavements with recycled asphalt shingles (RAS), yet they share common questions about the effect of MS on the performance of HMA. In this study, the field and laboratory performance of MS mixes produced from seven different transportation agencies are investigated as part of Transportation Pooled Fund TPF-5 (213). Field demonstration projects were conducted that evaluated multiple aspects of MS that include RAS grind size, MS percentage, RAS source, MS in combination with warm mix asphalt technology, MS as a fiber replacement for stone matrix asphalt, and RAS in combination with ground tire rubber. Field mixes from each demonstration project were sampled and tested for their permanent deformation, fatigue cracking, and low temperature cracking performance. Recovered asphalt binder from each mix was also evaluated. Pavement condition surveys were conducted for each project after completion. (C) 2015 Elsevier Ltd. All rights reserved.