STRESS-DEFORMATION CHARACTERISTICS OF ALASKAN SILT

An extensive series of laboratory tests were performed on representative samples of silts obtained from an Alaskan offshore site. The test results were used to asses the stress/deformation characteristics of Alaskan silt. The following issues were addressed: difference of shear characteristics from those of clay; the normalization of measured strength of silts; effect of sample disturbances and stress history on the strength; and the tests that are necessary for selection of parameters for use in the design of structures founded on silts. The results show that the stress-deformation characteristics of silts differ from those of clay. Normally consolidated silts tend to dilate upon shearing, and stress difference continues to increase with increasing strain. Also, silt samples are easily disturbed, and their undrained strengths are more likely to be seriously affected by disturbance than those of many clays. These and other findings are discussed.

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• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Flemming, L N
  • Duncan, J M
• Publication Date: 1990-3

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 377-393
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 116
  • Issue Number: 3
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Clay; Deformation; Foundations; Laboratory tests; Offshore structures; Shear strength; Silts; Stresses; Structural design
• Geographic Terms: Alaska
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00495164
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 30 1990 12:00AM