REPROCESSED ASPHALT GETS FIRST HIGHWAY TEST

A major test of a new asphalt recycling system is described, in which a highway pavement was repaved using the old pavement as raw material. The old 4-inch pavement was ripped with a Cat D8H dozer with twin rippers and the 3500 tons of rubble was stockpiled. The roadable processing system was brought to the site and erected. The prototype system (with its limited capacity of 70 tph) was used to process and lay down the pavement. An additional 2000 tons of new asphalt was required to complete the work since the new pavement was specified at 5.5 inch. The 23 ft. wide subgrade was contoured with a Cat 12E grader, roller with a 84 in. wide vibrostatic roller and sprayed with an MC-70 asphalt prime load. Paving was done with a 11-ft wide paver using the passing lane surface for reference. A 18,000-lb pneumatic tired roller was used to complete the job. The lower course was put down in two widths, 11 ft. and 12 ft., each 4-inch rolled thickness. Finish course of 1.5 inch was of plant mix asphalt and was put down in 11 ft. widths. While the old pavement was being renewed and stockpiled, the crushers, screens, heating drum and conveyors making up the processing system were being erected. The basic crushing system is described, as well as the portable screening plant, the proportioning system, and the continuous mix pugmill.

  • Corporate Authors:

    Dun Donnelley Publishing Corporation

    222 South Riverside Plaza
    Chicago, IL  United States  60606
  • Publication Date: 1974-12

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 28-30
  • Serial:
    • Roads and Streets
    • Volume: 117
    • Issue Number: 2
    • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

Filing Info

  • Accession Number: 00083729
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 8 1975 12:00AM