A glacial silty clay was studied to determine what variables control the laboratory compacted soaked strength and its variability. The clay was compacted by the impact method at three different compactive efforts. In addition, a comparison with a laboratory as-compacted strength study on the same soil was made as a means of examining changes in strength and its variability. It was found that the soaked strength for specimens compacted dry of optimum was a function of energy, the interaction of water content and energy, and the interaction of dry density and energy. For specimens compacted wet of optimum, the soaked strength was found to be controlled by modling water content only. A prediction technique was developed using the laboratory soaked strength data that should ultimately be applicable for field data. If a designer selects a soaked strength desired for the compacted soil, and the variability he will accent, the technique will tell him the density, water content, and energy to specify for compaction of that soil using a specific type of compaction. Field data on a similar soil type are now being analyzed to demonstrate this technique for field compaction predictions. /Author/

  • Supplemental Notes:
    • This report was prepared in cooperation with the U.S. Department of Transportation, Federal Highway Administration; and it was sponsored by Indiana State Highway Commission.
  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  United States  47907-1284
  • Authors:
    • Scott, J C
  • Publication Date: 1977-5-16

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 107 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00167820
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: JHRP-77-8 Intrm Rpt.
  • Contract Numbers: HPR-1(14) Part II
  • Files: NTIS, TRIS, ATRI
  • Created Date: Mar 7 1978 12:00AM