COMPRESSIBILITY OF FIELD-COMPACTED CLAY

This study investigates the compressibility of a plastic Indiana clay (St. Croix) compacted in the field. Correlation among compaction variables and compacted properties was a prime objective. The clay was compacted to three levels of effort and five levels of water content by two kinds of rollers. As-compacted compressibilities were assessed in the laboratory oedometer, and compaction prestress values were interpreted from the e-log p curves. These values were always less than the nominal roller pressures previously applied to the soil. A regression model was written in terms of the compaction pressure and an interaction between pressure and compaction water content. Other compacted samples were saturated under three levels of confinement, with the aid of vacuum and backpressure. The subsequent volume changes depended on the compaction variables as well as on the confinement during saturation. A correlation was developed among the volumetric strain, the intial void ratio, the compaction water content, and the confinement during saturation. Soaked compressibilities were also measured and compared with the as-compacted values. The variability of the field samples is large. Comparable studies with samples of laboratory-compacted clay had been previously made and reported. Coupling of the relations for field compaction with those previously established for laboratory compaction is also reported here. (Author)

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1983/897/897-009.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=COMPRESSIBILITY+OF+FIELD-COMPACTED+CLAY&author=P.+Lin&author=C.+Lovell&publication_year=1982
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309035090
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Earthwork Compaction. 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:
  • Lin, P S
  • Lovell, C W
• Publication Date: 1982

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 51-60
• Monograph Title: Earthwork compaction
• Serial:
  • Transportation Research Record
  • Issue Number: 897
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Compacted clays; Compressibility; Correlation analysis; Earth pressure; Moisture content; Plastic soils; Pressure; Regression analysis; Rollers; Strain (Mechanics); Void ratios; Volume changes
• Old TRIS Terms: Saturated earth pressure; Strains
• Subject Areas: Data and Information Technology; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00373029
• Record Type: Publication
• ISBN: 0309035090
• Files: TRIS, TRB
• Created Date: May 31 1983 12:00AM