Plastic anisotropy of soft reconstituted clays

M. Karstunen, M. Koskinen, University of Strathclyde, City of Helsinki, EC HPRN-CT-1999-00049 (Funder), EC MRTN-CT-2004-512120 (Funder), Academy of Finland (Grants 53936 and 78569) (Funder), Finnish Road Administration (Funder)

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Abstract

The aim of the paper is to extend the experimental validation of the S-CLAY1 model, which is a recently proposed elastoplastic constitutive model that accounts for initial and plastic strain-induced anisotropy. Drained stress path controlled tests were performed on reconstituted samples of four Finnish clays to study the effects of anisotropy in the absence of the complexities of structure present in natural undisturbed clays. Each test involved several loading, unloading, and reloading stages with different values of stress ratio and, hence, induced noticeable changes in the fabric anisotropy. Comparisons between test results and model predictions with the S-CLAY1 model and the modified Cam clay model demonstrate that despite its simplicity, the S-CLAY1 model can provide excellent predictions of the behaviour of unstructured soil.
Original languageEnglish
Pages (from-to)314-328
Number of pages15
JournalCanadian Geotechnical Journal
Volume45
Issue number3
DOIs
Publication statusPublished - Mar 2008

Keywords

  • plastic anisotropy
  • reconstituted clays
  • civil engineering
  • geotechnical studies

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    Karstunen, M., Koskinen, M., University of Strathclyde, City of Helsinki, EC HPRN-CT-1999-00049 (Funder), EC MRTN-CT-2004-512120 (Funder), Academy of Finland (Grants 53936 and 78569) (Funder), & Finnish Road Administration (Funder) (2008). Plastic anisotropy of soft reconstituted clays. Canadian Geotechnical Journal, 45(3), 314-328. https://doi.org/10.1139/T07-073