MODULUS OF ASPHALT MIXTURES--AN UNRESOLVED DILEMMA

Several moduli have been used to characterize asphalt mixtures. However, little information is available about which modulus is most appropriate to use in a given situation. This paper provides rational understanding, based on principles of strength of materials, of the moduli commonly used for structural evaluation of asphalt mixtures. Young's, shear, bulk, complex, dynamic, double-punch, resilient, and Shell nomograph moduli are discussed. The assumptions and limitations of these moduli are evaluated. It is concluded that the resilient modulus is more appropriate for use in multilayer elastic programs than are other moduli because it represents the elastic stiffness of the material after many load repetitions. Also, moduli predicted from the dynamic nondestructive testing of pavements are most representative of the in situ resilient moduli of the materials. If other moduli are used in the theoretical analysis of pavements, caution should be exercised to avoid inconsistency of assumptions.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1988/1171/1171-023.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=MODULUS+OF+ASPHALT+MIXTURES--AN+UNRESOLVED+DILEMMA&author=M.+Mamlouk&author=R.+Sarofim&publication_year=1988
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  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309047102
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1171, Asphalt Materials and Mixtures.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:
  • Mamlouk, Michael S
  • Sarofim, Ramsis T
• Publication Date: 1988

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 193-198
• Monograph Title: Asphalt materials and mixtures
• Serial:
  • Transportation Research Record
  • Issue Number: 1171
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Evaluation; Modulus of resilience; Theory
• Uncontrolled Terms: Moduli
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00483639
• Record Type: Publication
• ISBN: 0309047102
• Files: TRIS, TRB, ATRI
• Created Date: May 31 1989 12:00AM