APPLICATION OF AN IMPACT TEST TO FIELD EVALUATION OF MARGINAL BASE COURSE MATERIALS

A procedure for selection of base course materials that involves the use of a rapid in situ test based on an instrumented modified AASHO compaction hammer is discussed. Results of this test are compared with those of more common tests such as California bearing ratio and Texas triaxial, which have been used to evaluate marginal base course materials in Western Australia for use as surface courses under light seal coats. It is also used to derive an elastic modulus and to determine variability. Strength changes during and after construction, in terms of the impact value obtained from this test, are examined. From these observations, a procedure is suggested for selection of base course materials in the field. It is concluded that the effect of traffic compaction on strength improvement is worthy of further investigation and evaluation. (Author)

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1983/898/898-026.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=APPLICATION+OF+AN+IMPACT+TEST+TO+FIELD+EVALUATION+OF+MARGINAL+BASE+COURSE+MATERIALS&author=B.+Clegg&publication_year=1983
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309035112
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Low-Volume Roads. 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
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Clegg, Baden
• Conference:
  • Third International Conference on Low-Volume Roads
  • Location: Tempe Arizona, United States
  • Date: 1983-7-24 to 1983-7-28
• Publication Date: 1983

Media Info

• Media Type: Print
• Features: Figures; Maps; Photos; References; Tables;
• Pagination: pp 174-181
• Monograph Title: LOW-VOLUME ROADS: THIRD INTERNATIONAL CONFERENCE, 1983
• Serial:
  • Transportation Research Record
  • Issue Number: 898
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Alternatives analysis; Base course (Pavements); California bearing ratio; Compaction; Crash tests; Field tests; Hammers; Modulus of elasticity; Strength of materials; Testing; Triaxial shear tests
• Old TRIS Terms: Cbr testing
• Subject Areas: Design; Geotechnology; Highways; Pavements; Research; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00376543
• Record Type: Publication
• ISBN: 0309035112
• Report/Paper Numbers: N908
• Files: TRIS, TRB, ATRI
• Created Date: Aug 30 1983 12:00AM