MEASUREMENT AND PREDICTION OF ASPHALT STIFFNESSES AT LOW AND INTERMEDIATE PAVEMENT SERVICE TEMPERATURES

Ideally, low temperature asphalt stiffnesses should be measured directly for greatest accuracy. However, instruments capable of making these measurements are not generally available, and this makes the prediction of accurate low temperature asphalt stiffnesses still a matter of some concern. In North America the most commonly used asphalt stiffness prediction procedures are based on C. van der Poel's monograph, one using asphalt penetration index based on J. Ph. Pfeiffer and P. M. van Doormaal's original index, and another, a modified procedure introduced by N. W. McLeod, which uses penetration-viscosity numbers. Asphalt stiffnesses predicted from Van der Poel's nomograph using both these procedures are compared in this paper with experimental stiffness data for four asphalts, to establish the magnitude of the prediction errors in each case.

  • Supplemental Notes:
    • From the Technical Session, Lake Buena Vista, Florida, 13-15 February 1978.
  • Corporate Authors:

    University of Minnesota, Minneapolis

    155 Experimental Engineering Building
    Minneapolis, MN  United States  55455
  • Authors:
    • Gaw, U J
  • Conference:
  • Publication Date: 1978

Media Info

  • Features: References;
  • Pagination: p. 457-494
  • Serial:
    • Volume: 47

Subject/Index Terms

Filing Info

  • Accession Number: 00197209
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Sep 15 1979 12:00AM