ON THE RESPONSE OF GRANULAR UNBOUND PAVEMENT MATERIALS UNDER REPEATED LOADING

Resilient response of granular unbound pavement materials under repeated loading is herein presented. The difficulty in modelling the nonlinear response and the applicability of various models are discussed with special reference to the Australian experience. The behaviour of granular materials is more complex than can be predicted by the Hertzian contact theory, and hence many of the existing models can only be used for a limited stressregime although some of the complex ones may perform better. On the other hand, for design and analysis of flexible pavements, a model that does not require cumbersome calculation but is able to properly model the nonlinear deformation behaviour of the material is desirable. A simple two- parameter model involving the first invariant of stress and the repeated deviator stress is shown to be effective for a general characterisation of granular materials. A variant model with three constants has been found to besuitable for pavement design/analysis where near failure situations have to be modelled. (a) For the covering abstract of this conference see IRRDabstract no. 861222.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 99-114

Subject/Index Terms

Filing Info

  • Accession Number: 00669736
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 23 1994 12:00AM