COMPACTION PRESTRESS

The compressibility and shear strength characteristics of compacted soils, for both short- and long-term periods, are dependent on, among other factors, the as-compacted prestress and saturated prestress induced in the soil. Their presence is manifested in the consolidation and undrained shear test results available in the literature. Consequently, for an accurate interpretation of these test results, a knowledge of the induced compaction prestresses is essential. A procedure for the prediction of as-compacted prestress based on the precompaction soil conditons and the relevant compaction independent variables is presented. The procedure is based on general soil behavior using results from simple laboratory tests. The calculated values of the as-compacted prestress were compared with experimentally determined as-compacted prestresses, and a good correspondence was obtained. Using statistical regression techniques, prediction equations were derived for the experimentally determined as-compacted prestress, volumetric strain due to saturation, and saturated prestress. The volumetric strain and saturated prestress show a strong dependence on the values of as-compacted prestress. Thus, with a better understanding of the compaction prestresses, which can be controlled through compaction specifications, fills and embankments can be constructed with more predictable compressibility and shear strength behavior.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1987/1119/1119-013.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=COMPACTION+PRESTRESS&author=S.+Nwabuokei&author=C.+Lovell&publication_year=1987
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309044723
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Quality Assurance and Acceptance Procedures. 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:
  • Nwabuokei, S O
  • Lovell, C W
• Publication Date: 1987

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 105-114
• Monograph Title: Geotechnology
• Serial:
  • Transportation Research Record
  • Issue Number: 1119
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Compacted soils; Compaction; Compressibility; Embankments; Fills; Forecasting; Laboratory tests; Regression analysis; Shear strength; Soil mechanics; Specifications; Statistical analysis
• Old TRIS Terms: Soil behavior
• Subject Areas: Data and Information Technology; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00468623
• Record Type: Publication
• ISBN: 0309044723
• Files: TRIS, TRB, ATRI
• Created Date: May 31 1988 12:00AM