Direct Shear Test under constant volume state for unsaturated soil

S. Kato, B. S. Kim, S. Shibuya

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

1 Citation (Scopus)

Abstract

This paper examined on the shear behavior of unsaturated soil in Direct Shear Test (DST) under constant volume condition by applying the suction stress obtained from SSM (Suction stress-SWRC Method). An opening was set between the upper and the lower shear boxes before the shear process. The relationship between the shear behaviors for saturated and unsaturated soils can be explained by applying the suction stress. In addition, the principal stresses in DST were defined through applying several hypotheses, and the stress paths were analyzed with Cam clay type stress parameters. For the normalized stress plane with the equivalent stress ( p e′), in case of saturated soil, the stress path moved along the Hvorslev surface. In case of unsaturated soil, the stress path agreed with the maximum volumetric compression line. Therefore, the suction stress has an important meaning to understand the stress path behaviors under constant volume condition.

Original languageEnglish
Title of host publicationUnsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils
Pages265-270
Number of pages6
Publication statusPublished - Dec 1 2011
Externally publishedYes
Event5th International Conference on Unsaturated Soils - Barcelona, Spain
Duration: Sep 6 2010Sep 8 2010

Publication series

NameUnsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils
Volume1

Other

Other5th International Conference on Unsaturated Soils
CountrySpain
CityBarcelona
Period9/6/109/8/10

ASJC Scopus subject areas

  • Soil Science

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  • Cite this

    Kato, S., Kim, B. S., & Shibuya, S. (2011). Direct Shear Test under constant volume state for unsaturated soil. In Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils (pp. 265-270). (Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils; Vol. 1).