A RATIONAL DESIGN FOR THE REHABILITATION OF ASPHALT PAVEMENTS. PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL CONFERENCE OF THE CANADIAN TECHNICAL ASPHALT ASSOCIATION, HALIFAX, NOVA SCOTIA, 1989

The current approach to recycling frequently requires softening the recycled asphalt to its original consistency. This approach is flawed because it duplicates the asphalt that resulted in the distresses that led to the failure of the original pavement. The objective of pavement recycling should be a pavement in which no low temperature transverse cracking or other evidence of pavement distress appears during its service lifetime. This paper describes a design procedure which predicts the penetration and temperature susceptibility (as measured by the penetration viscosity number or pvn) of an asphalt which will provide protection from the failure mechanisms that occur at the temperature extremes and heavy traffic conditions faced by pavement in the field. As part of this work, new soft grades of asphalt with unique viscosities and elastic properties were developed from polymer modified asphalts and softening agents. The design of several recycled mixes using the design method and soft grades of polymer modified asphalt ar described. (a) for the covering abstract of the conference see IRRD 807386.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0921317336
• Corporate Authors:

  Multiscience Publications Incorporated

  555 Legendre E, Suite 20
  Montreal, PQ  Canada 
• Publication Date: 1989

Language

• Undetermined

Media Info

• Pagination: p. 224-257
• Serial:
  • Publication of: Multiscience Publications Incorporated
  • Publisher: Multiscience Publications Incorporated

Subject/Index Terms

• TRT Terms: Admixtures; Conferences; Durability; Flexible pavements; Forecasting; Mix design; Mixing; Pavement design; Pendulum tests; Polymerization; Recycling; Sensitivity; Softening point; Temperature; Viscosity
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00498282
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-921-317-33-6
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM