RECOMMENDED PROCEDURE FOR DETERMINING THE DYNAMIC MODULUS OF ASPHALT MIXTURES

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.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1975/549/549-003.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=RECOMMENDED+PROCEDURE+FOR+DETERMINING+THE+DYNAMIC+MODULUS+OF+ASPHALT+MIXTURES&author=L.+Yeager&author=L.+Wood&publication_year=1975
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309024544
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Characteristics of Bituminous Paving Mixtures to Meet Structural Requirements. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Yeager, Larry L
  • Wood, Leonard E
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1975

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 26-38
• Monograph Title: Bituminous Mixtures, Aggregates, and Pavements
• Serial:
  • Transportation Research Record
  • Issue Number: 549
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt cement; Asphalt concrete; Bituminous mixtures; Bulk density; Compaction; Design methods; Dynamic modulus of elasticity; Pavement performance; Physical properties; Repeated loads; Specimens; Stresses; Temperature; Viscosity
• Subject Areas: Design; Highways; Materials;

Filing Info

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