INFLUENCE OF THE BACK PRESSURE TECHNIQUE ON THE SHEAR STRENGTH OF SOILS--TECHNICAL NOTE

A series of consolidated-undrained triaxial tests with pore pressure measurement were carried out to study the influence of the back pressure technique on the shear strength of soils. Hand-remolded samples of normally consolidated and overconsolidated kaolinite, compacted samples of kaolinite, hand-remolded normally consolidated black cotton soil, and hand-remolded and undisturbed samples of red earth were tested with and without the back pressure technique. The results indicate that a back pressure can significantly influence the shear strength and pore pressure response of soils. Two mechanisms govern the influence of the back pressure; which one applies depends on whether the soils compress or dilate during shear. The effective stress parameters are essentially unaffected by the back pressure technique. A partial consolidation technique promises to be an effective time-saving method of determining the shear strength parameters. (Author)

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  • Corporate Authors:

    American Society for Testing and Materials

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  United States  19428-2957
  • Authors:
    • Allam, M M
    • Sridharan, A
  • Publication Date: 1980-3

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 35-40
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00324539
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 12 1981 12:00AM