Critical state behaviors of unsaturated soil in the direct shear test under constant pressure

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

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

3 Citations (Scopus)

Abstract

In this paper, we examined the direct shear test results of compacted weathered granite specimen for the critical state behavior. In the direct shear test, an opening was set between the upper and the lower shear boxes before the shear process. In the analysis, the principal stresses were decided based on several hypotheses for Mohr's stress circle, and Cam clay type stress parameters were defined. From the test results, the maximum volumetric compression point (M.C.P) line was defined as the critical state line. The volume change behaviors towards the critical state were also observed in comparison with the critical state line obtained by the triaxial test. Moreover, the existence of Hvorslev surface was verified by applying the equivalent stress (p e′) from the normal consolidation line. Above all, these results show that the critical state behaviors can be recognized in direct shear test.

Original languageEnglish
Title of host publicationUnsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils
Pages289-295
Number of pages7
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

    Kim, B. S., Kato, S., & Shibuya, S. (2011). Critical state behaviors of unsaturated soil in the direct shear test under constant pressure. In Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils (pp. 289-295). (Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils; Vol. 1).