FHWA Division Office Survey on State Highway Agency Usage of Reclaimed Asphalt Shingles: Quantities, Trends, Requirements, and Direction - Results from May 2017

In recent years, the economics and supply of petroleum and high quality natural aggregates have increased the need for cost-effective alternatives to virgin paving materials. The use of reclaimed asphalt pavement (RAP) and reclaimed asphalt shingles (RAS) in the asphalt mixture is increasing because they provide initial cost and material resource benefits. However, they create new challenges for state highway agencies (SHAs) to specify and control the quality of asphalt mixtures for long-term pavement performance. The FHWA initiated a survey of the Division Offices to gather more information. Although the use of RAP and RAS in asphalt mixtures are often related, the primary focus of the FHWA survey documented by this report was on RAS. The objective of this survey was to collect specific information on the current state-of-the-practice of RAS to: Identify quantities, trends, requirements, and performance of RAS usage; Obtain opinions on the usage of RAS in asphalt mixtures from the Division Office and state highway agency (SHA) perspective; Identify knowledge, engineering, and guidance gaps associated with RAS usage. The survey questions and summary of findings are provided in four broad RAS categories; Usage; Specifications; Performance; Future.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; References; Tables;
  • Pagination: 37p

Subject/Index Terms

Filing Info

  • Accession Number: 01663711
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-HIF-18-009
  • Files: NTL, TRIS, ATRI, USDOT
  • Created Date: Mar 20 2018 4:14PM