RESULTS OF INDIRECT TENSILE TESTS RELATED TO ASPHALT FATIGUE

THE PURPOSE OF THIS INVESTIGATION WAS TO DEVELOP A CORRELATION AMONG FATIGUE LIFE, MAGNITUDE OF STRAIN, AND INDIRECT TENSILE STIFFNESS FOR 4 ASPHALTIC CONCRETE MIXES PREPARED AND TESTED IN THE LABORATORY. CONSTANT STRAIN FATIGUE TESTS WERE PERFORMED ON 2.5 X 3 X 14- INCH BEAMS AT SEVERAL STRAIN LEVELS TO DEVELOP A STRAIN-FATIGUE LIFE CORRELATION FOR EACH MIX. INDIRECT TENSILE TESTS WERE CONDUCTED ON MARSHALL SPECIMENS AND THE STIFFNESS MEASURED IN THE REGION OF TENSILE FAILURE. STIFFNESS VALUES RANGED FROM 5,431 PSI FOR A FLEXIBLE MIX TO 29,070 PSI FOR AN AGED STIFF MIX. THERE WAS A TREND FOR THE STIFF MIXES TO YIELD SHORTER FATIGUE LIVES THAN DID THE FLEXIBLE MIXES IF AGGREGATES AND GRADATION WERE SIMILAR. THE CORRELATION DEVELOPED BETWEEN STIFFNESS AND FATIGUE LIFE INDICATES POSSIBILITIES FOR USING THE INDIRECT TENSILE TEST TO DESIGN ASPHALTIC CONCRETE WITH THE FLEXIBILITY REQUIRED TO WITHSTAND REPEATED STRAIN APPLICATIONS. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1972/404/404-001.pdf
• Supplemental Notes:
  • Sponsored by Committee on Mechanical Properties of Bituminous Pavement 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:
  • Maupin Jr, G W
• Conference:
  • 51st Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1972-1-17 to 1972-1-21
• Publication Date: 1972

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1-7
• Monograph Title: Asphalt mixture characterization and asphalt grading
• Serial:
  • Highway Research Record
  • Issue Number: 404
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt concrete; Beams; Correlation analysis; Failure; Fatigue (Mechanics); Flexibility; Stiffness; Strain (Mechanics); Tensile strength
• Uncontrolled Terms: Strain rate
• Subject Areas: Data and Information Technology; Highways; Materials;

Filing Info

• Accession Number: 00211768
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Apr 2 1973 12:00AM