Permanent deformation of asphalt mixes

This dissertation describes the results of a research that was conducted on the permanent deformation of asphalt mixtures. Central to this research was the separate characterization of the contribution of the aggregate skeleton and the bituminous mortar towards resistance to permanent deformation. The mixtures considered in this research included porous asphalt, stone mastic asphalt and dense asphalt concrete. The test program comprised of modulus testing as well as monotonic tension and compression tests on the asphalt mixtures, monotonic and repeated load triaxial tests on the aggregate skeletons along with dynamic shear and direct tension tests on the bitumen and the bituminous mortar. Prior to testing, the compaction homogeneity of the aggregate skeleton and asphalt mixture specimens was examined by means of X-ray tomography. The approach developed in this research was based on the Desai plasticity model. In order to demonstrate the practical implications of this plasticity approach, two test pavements with a significant amount of permanent deformation were analysed. The analyses showed that the observed permanent deformation could be explained by the approach developed in this research.

  • Availability:
  • Supplemental Notes:
    • Doctoral thesis submitted to the Trail Research School 5 June 2007
  • Authors:
    • Muraya, P M
  • Publication Date: 2007-9

Language

  • English

Media Info

  • Pagination: 259p
  • Serial:
    • Issue Number: T2007/8

Subject/Index Terms

Filing Info

  • Accession Number: 01387268
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 9789090218953
  • Files: ATRI
  • Created Date: Aug 22 2012 10:16PM