AT-REST LATERAL EARTH PREASSURE OF A CONSOLIDATING CLAY

Two clay slurries with different controlled chemistries (flocculated and dispersed) were consolidated in large-diameter rigid cylindrical slurry consolidometers. During two cycles of consolidation and rebound, the axial deformations, pore pressure, and both axial and radial stresses were measured directly, thereby providing a continuous record of the stress and strain history of each sample. The coefficient of lateral earth pressure at-rest k sub o was found to remain essentially constant during the loading phase of a loading-unloading cycle, but its value increased gradually during unloading until it exceeded unity when the overconsolidation ratio was about 2. Several indirect approaches were used to computer k sub o from shear strength parameters determined from triaxial compression tests on specimens trimmed from block samples of the same two clays for which direct measurements were obtained, and the results were found to be in good agreement. Within the scope of the test data, neither pore fluid chemistry nor the associated clay fabric exerted mush influence of the measured (during loading) values of k sub o which were in the range of 0.70 plus or minus 0.05. /ASCE/

• Availability:
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• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Abdelhamid, M S
  • Krizek, R J
• Publication Date: 1976-7

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 721-738
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 102
  • Issue Number: GT7
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Calculation; Clay; Coefficients; Compression; Consolidation; Deformation; Deformation curve; Earth pressure; Loading and unloading; Loads; Overconsolidation; Pore pressure; Pore water; Shear strength; Slurry; Soils
• Uncontrolled Terms: Computation; Lateral pressure; Loading; Soil consolidation; Soil deformation; Triaxial compression; Unloading
• Old TRIS Terms: Slurries
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00141319
• Record Type: Publication
• Report/Paper Numbers: ASCE #12240 Proceeding
• Files: TRIS
• Created Date: Oct 26 1976 12:00AM