Development of Alternative Parameters to Evaluate the Temperature Susceptibility of Asphalt Binders

A commonly used and simple test method for evaluating asphalt binder temperature susceptibility is the penetration test. There was experimental measurement and quantification of the penetration index (PI) of six different asphalt binders in this study. Using study data analysis as a basis, it was found that the PI calculated according to Chinese specifications highly depends on analysis model, test specifications, and test temperature. Errors are introduced into the estimation of asphalt binder temperature susceptibility by these factors. To evaluate asphalt temperature susceptibility at the intermediate-high and low temperature ranges, the dynamic shear rheometer (DSR) and bending beam rheometer (BBR) were utilized, respectively. Study results indicated the stiffness measured using the BBR and the storage modulus estimated using the DSR were more reliable temperature susceptibility parameters than the PI. Considering these findings, the variation rates of the storage modulus and stiffness common logarithm were proposed as standard parameters in lieu of the PI for asphalt binder temperature susceptibility characterization.

  • Availability:
  • Authors:
    • Wang, Lizhi
    • Wei, Jianming
    • Zhang, Yuzhen
  • Publication Date: 2009-3

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01145277
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 4 2009 11:43AM