EVALUATION OF METHODS OF DETERMINING THE THEORETICAL MAXIMUM SPECIFIC GRAVITY OF ASPHALT CONCRETE PAVING MIXTURES. INTERIM REPORT

A comparative study was performed to compare the maximum theoretical specific gravities of asphalt-aggregate paving mixtures obtained using several methods. The study included experimental work and analysis of the resulting data. The agreement between results obtained using the Texas C-14 method and the Rice method were excellent. Results obtained by backcalculating theoretical maximum densities from a single Rice test were also found to be satisfactory. Theoretical approach based on bulk specific gravity of aggregate is not recommended because of significantly low theoretical maximum specific gravities and high relative densities. The C-14 method results in lower design asphalt content than the Rice method if the latter is not corrected for water absorption. This case occurs if the design asphalt content is selected at 97% relative density for both methods. However, the design asphalt contents from the two methods will be much closer if the asphalt content is selected at 97% relative density based on the C-14 method, and 96% based on the Rice method.

  • Supplemental Notes:
    • Research study title: Field Evaluation to Obtain Density in Asphalt Mixtures.
  • Corporate Authors:

    University of Texas, Austin

    Center for Transportation Research, 3208 Red River Street
    Austin, TX  United States  78705

    Texas State Department of Highways & Public Transportation

    Transportation Planning Division, P.O. Box 5051
    Austin, TX  United States  78763

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Solaimanian, M
    • Kennedy, T W
  • Publication Date: 1989-4

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 44 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00616471
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-91+468-2, Res Rept 468-2, CTR 3-9-85/8-468-2
  • Contract Numbers: Study 3-9-85/8-468
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Oct 31 1991 12:00AM