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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  • Find a library where document is available. Order URL: http://worldcat.org/issn/01496115
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  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:
  • Geotechnical Testing Journal
  • Volume: 3
  • Issue Number: 1
  • Publisher: ASTM International
  • ISSN: 0149-6115
  • EISSN: 1945-7545
  • Serial URL: https://www.astm.org/products-services/standards-and-publications/geotechnical-testing-journal.html

Subject/Index Terms

• TRT Terms: Back pressure; Black cotton soils; Consolidation; Kaolinite; Pore pressure; Shear strength; Soil consolidation test; Soil tests; Soils; Triaxial shear tests; Undrained shear tests
• Uncontrolled Terms: Soil consolidation; Undrained tests
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

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