FIRST FIELD TRIALS WITH SULFUR-EXTENDED ASPHALT (SEA) BINDERS IN MAINE, DESIGN AND CONSTRUCTION REPORT

A total of 4,070 tons of sulfur-extended-asphalt (SEA) pavement was placed on Maine roads during the 1979 construction season. The SEA mix total includes 3,300 tons placed on an Interstate highway and 770 tons placed on a primary highway. The mix was produced in an 8,000 pound batch plant. A 30/70 (17/83 by vol) weight blend of sulfur and asphalt was used as the binding agent. The sulfur modified asphalt was mixed by the "Direct Method" by adding the two materials, asphalt first, one after the other into the mix plant asphalt weight bucket. The SEA Mix was designed using Hveem procedures by State technicians in the Bituminous Concrete Laboratory in Bangor. Quality assurance of the finished product was determined by State of Maine inspectors at the plant and on the street. After construction, tests were conducted on the SEA Mix to determine the physical properties of the recovered asphalt for a before and after comparison of the modified binding agent. Frictional resistance, deflection and rideability measurements were obtained on both the SEA and the control sections. These parameters produced similar results for both sections. The SEA binder concept used on the experimental project reduced the required asphalt cement by nearly 20 percent. Laboratory tests indicated that sulfur negated the oxidation of the asphalt cement during the plant mix cycle. (FHWA)

  • Corporate Authors:

    Maine Department of Transportation

    Materials and Research Division, Box 1208, Hogan Road
    Bangor, ME  United States  04402

    Federal Highway Administration

    Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • GROSS, A E
  • Publication Date: 1980-8

Media Info

  • Pagination: 73 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00341300
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-TS-80-240, ME-TP-80-1
  • Contract Numbers: DOT-FH-11-9212 TO4
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Dec 22 1981 12:00AM