PREDICTING PERMANENT DEFORMATION OF ASPHALT CONCRETE FROM CREEP TESTS (ABRIDGEMENT)

A method of predicting permanent deformation characteristics of asphalt concrete under repetitive loading is described. In this mehtod, a relatively small number of creep tests are needed for the characterization of the constritutive equation for predicting permanent strains. The approach outlined here is applicable to a rich-mix asphalt concrete. For asphalt concrete with a low asphalt content, the total permanent strain due to repeated loading cannot be considered as due solely to viscous flow, and an equation is presented which would give an accurate prediction of deformation: irrecoverable strain = A (delta + N) sup alpha + gamma (N) sup xi. N=total number of repetitions. Three of the 4 coefficients in equation (A, alpha, gamma) can be determined from the creep and recovery test results, and the fourth coefficient, xi, can be determined from a repetitive loading test.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/616/616-009.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=PREDICTING+PERMANENT+DEFORMATION+OF+ASPHALT+CONCRETE+FROM+CREEP+TESTS+(ABRIDGEMENT)&author=J.+Lai&author=W.+Hufferd&publication_year=1976
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309025958
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Strength and Deformation Characteristics of Pavement Sections. 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:
  • Lai, James S
  • Hufferd, William L
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 41-43
• Monograph Title: Soil mechanics: rutting in asphalt pavements, embankments on varved clays and foundations
• Serial:
  • Transportation Research Record
  • Issue Number: 616
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accelerated tests; Asphalt concrete; Asphalt content; Creep tests; Deformation; Forecasting; Repeated loads; Strain (Mechanics)
• Old TRIS Terms: Strains
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00162996
• Record Type: Publication
• ISBN: 0309025958
• Files: TRIS, TRB
• Created Date: Oct 13 1977 12:00AM