This paper discusses the structural design and performance problems still outstanding in pavements and assesses the testing methods available for investigating them. Broadly the problems are classified as layer and load equivalency, i.e. What thickness of material x is equivalent to a given thickness of material y?, and what is the damaging effect of wheel load a as compared with wheel load b? The conclusions are drawn that full scale testing is necessary and that in any research program to examine the structural performance of pavements under controlled conditions there must be: (a) field trials of sections built into public roads; (b) a laboratory test program to characterise materials; and (c) a full scale, rolling wheel load, test facility. The most suitable form of a full scale test facility would be either a circular test track or a linear testing device (heavy vehicle simulator) able to apply a standard 80 kn load through a normal dual tyre wheel onto a pavement constructed by the usual procedures and of normal materials. Results of a questionnaire on pavement problems are given and two appendices detail existing pavement test track facilities and an initial comparison of circular and linear configurations. A first estmimate of the cost for such a facility is an initial outlay of $1M and a continuing annual cost of $3000k (A). (TRRL)

  • Corporate Authors:


    Melbourne, Victoria  Australia 
  • Authors:
    • Sparks, G H
    • Metcalf, J B
  • Publication Date: 1980-1

Media Info

  • Features: Figures; References;
  • Pagination: 62 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00316822
  • Record Type: Publication
  • Source Agency: ARRB
  • Report/Paper Numbers: Intl Rpt Air 329-1 Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Apr 15 1981 12:00AM