THE CHALLENGES OF ASPHALT PAVEMENT DESIGN

An asphalt pavement consists of several layers of asphalt concrete or hot mix asphalt placed directly on the subgrade or on a granular base. This article focuses on the mechanistic method of designing asphalt pavements developed by The Asphalt Institute (AI). The AI method characterizes the pavement structure as a multi-layered elastic system. Pavement thickness selection is based on limiting the vertical compressive strain at the top of the subgrade and limiting the horizontal tensile strain at the bottom of the asphalt layer. Five key factors determine the performance of the asphalt pavement: subgrade strength, properties of materials, climate, traffic characteristics, and drainage. Each factor is discussed in detail. The authors comment on the quality of materials, but remind readers that design is only as good as the quality of construction.

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  • Corporate Authors:

    Civil Engineering News, Incorporated

    1255 Roberts Boulevard, Suite 230
    Kennesaw, GA  United States  30144
  • Authors:
    • May, R W
    • Villacres, J N
  • Publication Date: 1995-9

Language

  • English

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 30
  • Serial:
    • Civil Engineering News
    • Volume: 7
    • Issue Number: 8
    • Publisher: Civil Engineering News, Incorporated
    • ISSN: 1051-9629

Subject/Index Terms

Filing Info

  • Accession Number: 00711598
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 25 1995 12:00AM