The inspection is reported of a project in which glassphalt mix (63 percent crushed glass, 36 percent rock dust, 1 percent hydrated lime and 5.1-5.8 percent grade 60/70 asphalt binder) was placed on a section of public street in California. The section was a 3-inch compacted layer, 600 feet long and approximately 22 feet wide placed over a 7-inch aggregate base. To increase the bonding, one percent hydrated lime was added as an anti-stripping agent. A 10-ton steel roller was used and there was a large amount of compaction upon rolling. The glassphalt remained at high temperatures for a long period and caused compaction difficulties. Further observations related to rolling and crushing of glass particles are reported glassphalt appears to be lighter than conventional asphalt and high in voids. It is estimted that it would require 3 million bottles for 1 mile lane, 3 inches thick at 63 percent crushed glass. Comments are also made regarding problems of glass dust, roadway glare, and cost.

  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Sussman, W A
  • Publication Date: 1976-4

Media Info

  • Features: Photos;
  • Pagination: p. 46-49
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00149792
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Apr 13 1977 12:00AM