This report presents the findings of a study to evaluate current procedures and criteria for the setting of density standards to control compaction during construction of granular base and subbase courses, and to develop more appropriate procedures and criteria. An extensive laboratory test program was carried out, comprising seven methods of compaction and four materials under various moisture conditions and gradations. The aggregates tested were a granite-gneiss a crushed gravel, a dolomitic limestone, and a basalt. A prototype field compact testing program was conducted using the same four aggregates. Procedures and criteria are proposed for use by highway agencies. /Author/

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    • 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. Sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration.
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    Transportation Research Board

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  • Authors:
    • Roston, J P
    • Roberts, F L
    • Baron, W
  • Publication Date: 1976

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 73 p.
  • Serial:
    • NCHRP Report
    • Issue Number: 172
    • Publisher: Transportation Research Board
    • ISSN: 0077-5614

Subject/Index Terms

Filing Info

  • Accession Number: 00148938
  • Record Type: Publication
  • Report/Paper Numbers: NCHRP 48(2)
  • Contract Numbers: HR4-8(2)
  • Files: TRIS, TRB, ATRI
  • Created Date: Apr 13 1977 12:00AM