NEW APPARATUS FOR TENSILE TESTING OF PAVEMENTS

A large part of Australia's pavement maintenance budget is expended on prevention or repair of defects associated with cracking of the bituminous seal coat surfacing of unbound granular pavements. This report describes laboratory apparatus that has been developed to study the mechanical response of this type of pavement to tensile forces. In carefully controlled laboratory tests, a 100 mm thick fine crushed rock pavement is stretched horizontally by opening a crack in the underlying subgrade. Instrumentation consists of LVDT displacement transducers and specially designed strain gauge force transducers that are monitored continuously by a microcomputer while the subgrade crack is opened at a constant rate of displacement. Typical pavement preparation and testing procedures are also described. (a)

  • Availability:
  • Corporate Authors:

    Queensland University of Technology

    Physical Infrastructure Centre, GPO Box 2434
    Brisbane, Queensland  Australia  4001
  • Authors:
    • Wallace, K
    • KARAGANIA, R
    • Bullen, F
  • Publication Date: 1998-12

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00789933
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 1-86435-350-3
  • Files: ITRD, ATRI
  • Created Date: Apr 11 2000 12:00AM