Defining Yield from Bender Element Measurements in Triaxial Stress Probe Experiments

This paper describes the elastic response of a block sample of compressible Chicago glacial clay under a variety of stresses and its relationship with the deformation characteristics at relatively large strains. The elastic shear stiffness was obtained from bender element tests during consolidation and shearing in drained triaxial stress probe tests. An empirical correlation was established based on the elastic shear stiffness in a pre-yield condition. By comparing the empirical correlation with the measured elastic shear stiffness in the stress region during probing, the changes of elastic shear stiffness were investigated. The departure of elastic shear stiffness from values computed by the empirical relation based on K and subscript 0 loading directly relates to the yielding characteristics of the clay. The large-scale change of soil structure at yielding alters the well-established relationship between the elastic shear stiffness and stresses in the pre-yield condition. The mechanical yielding response of clays can be detected based on the systematic analysis of the elastic shear wave velocities.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Authors:
  • Jung, Young-Hoon
  • Cho, Wanjei
  • Finno, Richard J
• Publication Date: 2007-7

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Illustrations; References; Tables;
• Pagination: pp 841-849
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 133
  • Issue Number: 7
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Clay soils; Compressible soils; Elasticity (Mechanics); Empirical methods; Experiments; Measurement; Plastic deformation; Probes (Measuring devices); Shear modulus; Stiffness; Strain measurement; Stresses; Triaxial shear tests; Waves; Yield stress
• Uncontrolled Terms: Bender elements
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 01053987
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 20 2007 9:56AM