The work consists of heating and scarifying the existing AC pavement and overlaying sith a new AC surface. The work is being done with a specialized repaving machine built by Cutler Repaving Associates, Inc. The machine has two butane-fired, open-burner heaters each followed by a scarifier. The Scarified material is redistributed uniformly and asphaltic material is sprayed on. A new layer of AC is then layed down by this same machine which is then compacted by a steel wheel roller. The roller and trucks delivering new AC are the only equipment needed in addition to the repaver. Reclaimite is being added to the scarified original pavement on this project, but any asphaltic product can be used. Eight to ten feet is the normal width of pavement worked in one pass, but it is claimed that with an expert operator a five-foot width can be worked. Narrower widths are sometimes needed to complete the pavement. For standby equipment the contractor has a heater/planer, a boot truck and a conventional paver available. The paver is considered to be making good production at 1000 sy/hr; however, this rate has not been achieved on this project. The state desired to try this machine because it appeared that the one pass unit would give good product with less interference with traffic. The machine did not perform as has been hoped. The major shortcomings appear to be: The existing pavement is not heated enough. The amount of Reclaimite used cannot be controlled adequately. More new AC is being used than is necessary compared to other methods. The riding surface is not satisfactory. The machine is too slow due partly to its great size. The "as bid" cost of the work was about $1.00/sy but overruns in AC, Reclaimite, asphalt, and traffic control will result in a considerable increase in cost. The AHD District Engineer recommends that this method of repaving not be used in the future. /Article/

  • Supplemental Notes:
    • Appeared in "Special Reports on: Use of Equipment and Methods of Maintenance".
  • Corporate Authors:

    Federal Highway Administration

    Construction and Maintenance Division, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Kienitz, R D
  • Publication Date: 1975-7

Media Info

  • Pagination: 2 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00126303
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Oct 18 1975 12:00AM