The fundamental properties of asphaltic concrete are important to researchers as input to new design procedures. The dynamic modulus of bituminous mixtures is a rational part of this new design procedure as a predictor of in-service pavement performance. Much research is under way to determine the fundamental properties of bituminous paving mixtures under a wide variety of conditions. The objective of this study was to select 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 that incorporates these varialbes. Material and sample preparation included a study on compaction procedures of 4 by i-in.-high (102 by 203-mm) cylindrical specimens. A compaction technique was developed that yeilds uniform bulk density of the specimen. Another objective of the study was to correlate a physical property of the asphalt cement to the dynamic modulus. Such a correlation was established between the dynamic modulus and the slope of log kinematic viscosity versus 1/temperature, the cyclic loading rate, and temperature. This correlation may not be valid for mixtures of different aggregate types, gradation, and asphalt contents.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 26-38
  • Monograph Title: Bituminous mixtures, aggregates, and pavements
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00129484
  • Record Type: Publication
  • ISBN: 0309024544
  • Files: TRIS, TRB
  • Created Date: Mar 10 1976 12:00AM