MIX DESIGN METHODOLOGY FOR A WARRANTIED PAVEMENT: CASE STUDY

The application of a mix design procedure developed as part of Strategic Highway Research Program (SHRP) Project A-003A for a warrantied pavement project in California is described. Two mixes were designed for overlay of a "cracked and seated" portland cement concrete pavement, one a dense-graded asphalt concrete with a PBA-6 specification modified binder and the other an asphalt-rubber hot mix with a gap gradation. Both mixes were designed to meet rutting specifications for the pavement warranty. The mix design method considers mix performance measured using repeated load simple shear testing at constant height, traffic, site-specific temperatures, and reliabilty of test results and traffic predictions. The mixes were also evaluated for moisture sensitivity, using moisture-conditioning procedures developed as part of Project SHRP A-003A to determine the need for, and suitability of, using an antistripping additive. The mix design method developed in SHRP A-003A provided the contractor with a tool to predict the performance of the mix in terms of anticipated traffic during the warranty period and for site-specific temperature conditions. Both mixes were constructed as part of the overlay project in July 1993 and performed successfully during 1994.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 184-192
  • Monograph Title: Hot-mix asphalt design, testing, evaluation, and performance
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00714846
  • Record Type: Publication
  • ISBN: 309061563
  • Files: TRIS, TRB
  • Created Date: Dec 4 1995 12:00AM