THE STEADY STATE OF DEFORMATION

The steady state of deformation for any mass of particles is that state in which the mass is continuously deforming at constant volume, constant normal effective stress, constant shear stress, and constant velocity. The steady state of deformation is achieved only after all particle orientation has reached a statistically steady-state condition and after all particle breakage, if any, is complete, so that the shear stress needed to continue deformation and the velocity of deformation remain constant. The similarities and differences between steady-state deformation and the current use of the term critical state are described. A special undrained triaxial test on a sand is presented to demonstrate clearly that a special flow structure exists during steady-state deformation, which is quite different from the initial structure, and which is credited to a nonrandom, i.e., statistically oriented, arrangement of the sand grains. (ASCE)

• 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:
  • Poulos, S J
• Publication Date: 1981-5

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 553-562
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 107
  • Issue Number: GT5
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Deformation; Effective stress; Sand; Saturated soils; Shear stress; Steady state; Triaxial shear tests; Velocity
• Uncontrolled Terms: Undrained conditions
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00334900
• Record Type: Publication
• Report/Paper Numbers: ASCE 16241 Proceeding
• Files: TRIS
• Created Date: Oct 28 1981 12:00AM