Small strain responses of a freshwater glacial clay

Richard J. Finno*, Terence P. Holman, Young Hoon Jung, Wan Jei Cho, Izzat Katkhuda

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

General stress-strain, modulus degradation, and directional stiffness dependence responses of compressible Chicago glacial clays are examined through a series of drained directional stress probes in a triaxial cell. Shear and volumetric stress-strain behaviors of specimens cut from block samples vary strongly as a function of stress probe direction. Limit points were determined for each stress probe and indicate that a closed limit state surface may be drawn around the experimental data. Modulus degradation behaviors, in terms of apparent secant shear modulus Gsec and apparent secant bulk modulus Ksec, demonstrate that these soil moduli are directionally dependent at all strain levels, including at strains as low as 0.001%. Unloading moduli, defined as a reduction of either shear or mean normal stresses, were observed to be significantly greater than loading moduli. These strain-level and directionally dependent responses imply that these freshwater clays are incrementally nonlinear. Copyright ASCE 2006.

Original languageEnglish (US)
Title of host publicationGeomechanics II
Subtitle of host publicationTesting, Modeling, and Simulation - Proceedings of the Second Japan-U.S. Workshop on Testing, Modeling, and Simulation in Geomechanics
Pages1-15
Number of pages15
Edition156
DOIs
StatePublished - Dec 1 2006
EventGeomechanics II: Testing, Modeling, and Simulation - 2nd Japan-U.S. Workshop on Testing, Modeling, and Simulation in Geomechanics - Kyoto, Japan
Duration: Sep 8 2005Sep 10 2005

Publication series

NameGeotechnical Special Publication
Number156
ISSN (Print)0895-0563

Other

OtherGeomechanics II: Testing, Modeling, and Simulation - 2nd Japan-U.S. Workshop on Testing, Modeling, and Simulation in Geomechanics
CountryJapan
CityKyoto
Period9/8/059/10/05

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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