FATIGUE AND RUTTING PERFORMANCE OF CONVENTIONAL ASPHALT AND BITUMEN- RUBBER ASPHALT UNDER ACCELERATED TRAFFICKING

The Californian Department of Transportation commissioned a pilot project to evaluate the potential of the Heavy Vehicle Simulator (HVS) for conducting pavement studies. The effect of channelisation of traffic on the rutting behaviour of a continuously-graded asphalt overlay was investigated. Secondly, the cracking behaviour of a 75 mm thick continuously-graded overlay was compared with that of a 38 mm thick bitumen-rubber asphalt overlay. A laboratory evaluation of the materials was conducted by the University of California at Berkeley. The channelisation of traffic resulted in a 100% increase in the surface rut rate compared with that under normal wandering traffic. A reduction of 50% in layer thickness is justified to obtain similar resistance to cracking if conventional asphalt is replaced with bitumen-rubber asphalt. (A) For the covering abstract of the conference see IRRD 873950.

Language

  • English

Media Info

  • Features: References;
  • Pagination: III199-III215

Subject/Index Terms

Filing Info

  • Accession Number: 00714404
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 27 1995 12:00AM