ELASTIC-PLASTIC MODELLING OF UNSATURATED SOIL USING RESULTS FROM A NEW TRIAXIAL TEST WITH CONTROLLED SUCTION

This paper examines the constitutive behaviour of a compacted highly plastic sand-clay mixture. Three series of tests evaluated components of a possible elastic-plastic constitutive model for unsaturated stress-strain behaviour. The tests examined the influence of suction on yield stress under external isotropic loading and the influence of suction on shear strength. The results examine the behaviour of highly plastic clay subjected to generalised (triaxial) stresses that include shear, isotropic and suction loading. The data represent an important new resource of information on a densely compacted, strongly expansive, sand -bentonite mixture that was loaded independently by external stresses and internal suctions. The suctions were also measured by sensors buried in the specimens. They have been interpreted in an elastic-plastic framework to produce values for some of the material properties needed for the model. The results and associated discussion provide new insights into the behaviour of unsaturated highly plastic clay materials. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • BLATZ, J A
  • Graham, Jim
• Publication Date: 2003-2

Language

• English

Media Info

• Features: References;
• Pagination: p. 113-22
• Serial:
  • GEOTECHNIQUE
  • Volume: 53
  • Issue Number: 1
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Clay; Soil suction; Swelling soils; Test procedures; Tests; Triaxial shear tests
• ITRD Terms: 4177: Clay; 5771: Suction; 5203: Swelling (soil); 6255: Test; 6288: Test method; 5566: Triaxial
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 00943305
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Jun 11 2003 12:00AM