This paper describes the development and use of a rubber- asphalt binder for seal coat construction. Whereas rubber has been added to asphalt in low percentages (3 to 5 percent) in the past, this binder uses high percentage (25 to 30 percent) additions of granulated tread rubber reclaimed from discarded automobile tires. The granulated rubber is mixed with hog asphalt to form a tough and elastic binder with less susceptibility to temperature changes. It has been used very successfully in seal coat construction for maintenance operations in the city of Pheonix, Arizona, for several years and has been especially successful in overlaying pavements that exhibit severe fatigue or "alligator" cracking. The paper describes the construction procedure used in Phoenix, and includes a recommended specification for seal coat construction using the rubber-asphalt composition as the binder.

  • Corporate Authors:

    Federal Highway Administration

    Office of Implementation, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Olsen, R E
  • Publication Date: 1973-2

Media Info

  • Features: Figures; References;
  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00133967
  • Record Type: Publication
  • Report/Paper Numbers: Impl. Pkg. 73-1
  • Files: TRIS, USDOT
  • Created Date: Jun 23 1977 12:00AM