SUPERPAVE OFFERS CONTRACTORS LONGER LASTING PAVEMENTS, MORE RESPONSIBILITY

The Strategic Highway Research Program developed a mix design procedure to produce asphalt mixes that better resist rutting, low temperature cracking, and fatigue cracking. Following development, the new Superpave Method was compared to the conventional Marshall Mix Design Method for purposes of noting how the two asphalt concretes differ. This article describes the study protocol and the findings of the comparison. Benefits of the Superpave design include decreased rutting, increased film thickness, no increase in segregation, and use of a gyratory compactor as a quality control tool. Testing proved that Superpave mixes do better resist aging, stripping, and cracking in the field, increasing their overall durability. Several concerns--breakdown due to mechanical mixing, restrictive volumetric requirements, draindown of the binder, and increased field densities--were noted and will require further investigation.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/11660022
• Corporate Authors:

  Scranton Gillette Communications

  380 E Northwest Highway, Suite 200
  Des Planes, IL  United States  60016-2282
• Authors:
  • Jones, J C
  • Shelor, W C
  • Thau, M
• Publication Date: 1995-1

Language

• English

Media Info

• Features: Figures; Photos;
• Pagination: p. 32
• Serial:
  • Roads & Bridges
  • Volume: 33
  • Issue Number: 1
  • Publisher: Scranton Gillette Communications
  • ISSN: 8750-9229
  • Serial URL: http://www.roadsbridges.com/rb/

Subject/Index Terms

• TRT Terms: Alternatives analysis; Asphalt concrete; Compactors; Cracking; Durability; Films (Coatings); Mix design; Pavements; Quality control; Rutting; Service life; Thickness
• Identifier Terms: Strategic Highway Research Program
• Uncontrolled Terms: Film thickness; Gyratory compactors
• Old TRIS Terms: Pavement life
• Subject Areas: Design; Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00715368
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Jan 19 1996 12:00AM