QUASAR STRUCTURAL ANALYSIS OF ASPHALT PAVEMENTS

This paper presents results of a study on the development of a structural evaluation procedure for asphalt pavements with asphalt layer thicknesses less than 250 mm. The methodology does not only use the strain at the bottom of the asphalt layer and the vertical compressive strain at the top sub-base and/or subgrade as design criteria, but also the strain at the pavement surface, the compressive strain at the top of the bound road base, and the strain at the bottom of the bound road base. The load-carrying capacity of the pavement structure is expressed by the so-called Modified Structural Number, SNC, to circumvent the tedious procedure of backcalculation of layer stiffness moduli. An especially developed software tool called "QUASAR" enables easy and very quick use of the multitude of criteria to assess the structural condition of asphalt roads and to determine the required strengthening. Milling and partial milling of the asphalt layer form part of the rehabilitation measures, as well as data on rutting and development of rutting. For the covering abstract see ITRD E118503.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 515-25
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 00963820
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 90-5809-398-0
  • Files: ITRD
  • Created Date: Oct 3 2003 12:00AM