Troubleshooting Asphalt Mixes

This article guides readers through the steps needed to troubleshoot asphalt mixes, particularly those for Superpave and Marshall mix designs, which are based on optimizing aggregate volume, asphalt binders, and air voids. The latter two components combine to become “voids in mineral aggregates” (VMA). The author stresses that the most important factor in achieving the correct mix is not weight but volume. Topics covered include determining the specific gravity of the aggregate; the bulk specific gravity of the stone (Gsb); and problems that may arise with changes in the Gsb values, including increased cracking or rutting. One chart compares the mix properties of the same compacted mix design specimens with different bulk specific gravities of the aggregates.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; Tables;
  • Pagination: pp 27-31
  • Serial:
    • Asphalt
    • Volume: 33
    • Issue Number: 1
    • Publisher: Asphalt Institute
    • ISSN: 0004-4954

Subject/Index Terms

Filing Info

  • Accession Number: 01675869
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 2018 6:54AM