Performance of constitutive models in predicting behavior of remolded clay

L. Sebastian Bryson, Ali Salehian

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The performance of several soil constitutive models was evaluated by comparing experimental results and simulated behavior of a medium plasticity clay. Input parameters for the soil constitutive models were obtained from triaxial compression and extension tests on normally and overconsolidated medium plasticity clay. The soil models employed for this study were the Cam Clay, Modified Cam Clay, 3-SKH, and S-CLAY1 models. In order to investigate the influence of some of the input parameters on the performance of the models, sensitivity analyses were also performed. The comparisons demonstrate that the Cam Clay model was able to predict the normally consolidated compressive behavior of medium plasticity clay. Both 3-SKH and Cam Clay models were able to produce acceptable predictions for stress-strain and stress path behavior for overconsolidated compression of the soil. The 3-SKH model did not perform satisfactorily for predicting pore pressure variations, while the Cam Clay model demonstrated fairly acceptable predictions. For the normally consolidated reduced extension test, the Modified Cam Clay and S-CLAY1 models performed better than the Cam Clay and 3-SKH models in predicting the stress-strain curve, pore pressure variations, and stress path.

Original languageEnglish
Pages (from-to)143-154
Number of pages12
JournalActa Geotechnica
Volume6
Issue number3
DOIs
StatePublished - Sep 2011

Keywords

  • 3-SKH
  • Cam clay
  • Constitutive model
  • Medium plasticity clay
  • Modified cam clay
  • S-CLAY1
  • Sensitivity analysis
  • Stress path

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)

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