The fundamental properties of asphaltic concrete are important to researchers as input to new design procedures being developed. The dynamic modulus of bituminous mixtures becomes a rational part of this new design procedure as a predictor of a pavement's performance in service. A review of current literature indicated that many researchers are active in determining fundamental properties of bituminous paving mixtures under a wide variety of conditions. The main objective of this study was to determine a method for evaluating the dynamic modulus of an Indiana State Highway surface mixture. The main variables used in this study were stress level, cyclic loading rate, temperature, and asphalt type. A final procedure was developed incorporating the above mentioned variables. Material and sample preparation included a study on compaction procedures of four by eight inch high cylindrical specimens. A compaction technique was developed that yields uniform bulk density of the four by eight inch high specimen. A secondary objective of this study attempted to correlate a physical property of the asphalt cement to the dynamic modulus of the bituminous paving mixture. Such a correlation was established between the dynamic modulus and the slope of the log kinematic viscosity versus 1 degrees K plot, the cyclic loading rate, and the temperature of the test. This correlation may not be valid for mixtures using different aggregate types, graduations, and asphalt contents.

  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  United States  47907-1284
  • Authors:
    • Yeager, L L
  • Publication Date: 1973-12

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 65 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00261516
  • Record Type: Publication
  • Report/Paper Numbers: JHRP-27-73 Final Rpt.
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM