SOME ASPHECTS OF UPSIDE-DOWN PAVEMENT DESIGN

The upside-down design, consisting of a thin bituminous surfacing and an untreated granular base overlying a cement-treated sub- base, is discussed in this paper. The inter-dependence between the thicknesses of the three materials and the response to overloaded wheels were analysed with a computer program capable of stress-modulus iteration, PSAD2A. From this study it was concluded that the flexible surfacing should be about 30 to 35 mm thick and that it is structurally more beneficial to increase the thickness of the treated sub-base than that of the granular base. For highway-type loading the granular layer should preferably be 125 to 150 mm while the cement-treated layer should be about 300 to 375 mm thick. During overloading it is the cement-treated sub-base that is stained excessively and very little damage is done to the untreated granular base-course. /Author/

  • Record URL:
  • Supplemental Notes:
    • Proceedings of the Eighth ARRB Conference held at University of Western Australia, 23-27 August, 1976.
  • Corporate Authors:

    Australian Road Research Board

    P.O. Box 156
    Nunawading, Victoria 3131,   Australia 

    ARRB Group Ltd.

    Vermont South, Victoria  Australia 
  • Authors:
    • Otte, E
    • Monismith, C L
  • Conference:
  • Publication Date: 1976-8

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 1-7
  • Serial:
    • Volume: 8
    • Issue Number: 8

Subject/Index Terms

Filing Info

  • Accession Number: 00148710
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 30 1977 12:00AM