PREDICTION OF DENSITY AND STRENGTH FOR A LABORATORY- COMPACTED CLAY

Predictions of compacted soil strength for a highly plastic clay are developed by statistically correlating the results of unconsolidated-undrained triaxial tests with the compaction variables of water content, dry density, and compactive work. Work was calculated from measurements of the force and displacement of kneading-compactor foot as it loaded the soil. The statistical models for prediction of density and strength gave results consistent with well- documented experimental evidence. The model for density prediction dry of optimum included variables of water content and a compactive work ratio; for compaction wet of optimum, dry density was a function of water content only. The model for strength prediction dry of optimum included variables of water content, dry density, degree of saturation, and confining pressure. Wet of optimum, the logarithm of strength decreased linearly with initial void ratio. All of these models had good statistical validity. By using such models, the designer can predict soil strength at particular compaction levels or, if a minimum strength value is required, the necessary levels of compaction values can be estimated. These relations were developed from laboratory compaction. Similar relations for field compaction are being developed with the intention of correlating the two. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 53-59
  • Monograph Title: Emulsion mix design, stabilization and compaction
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00323007
  • Record Type: Publication
  • ISBN: 0309030676
  • Files: TRIS, TRB
  • Created Date: Apr 15 1981 12:00AM