STRESS STATE VARIABLES FOR UNSATURATED SOILS

An unsaturated soil is visualized as a four-phase system, the fourth phase being the air-water interface commonly referred to as the contractile skin. Suitable stress state variables for an unsaturated soil are proposed on the basis of writing force equilbrium equations for each phase, within the context of multiphase continuum mechanics. The analysis indicates that any two of three possible normal stress variables can be used to define the stress state. Experimental null-type tests verified the proposed stress state variables for the soil structure and contractile skin of an unsaturated soil. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • FREDLUND, D G
  • MORGENSTERN, N R
• Publication Date: 1977-5

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 447-466
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 103
  • Issue Number: GT5
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Air water interfaces; Classical field theory; Soil structure; Structural analysis; Unsaturated soils
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00157162
• Record Type: Publication
• Report/Paper Numbers: ASCE 12919
• Files: TRIS
• Created Date: Nov 9 1977 12:00AM