Abstract
The effects of matric suction on the shear strength of unsaturated soil have not been fully understood for low stress level. In this study, the relationships among the matric suction, the shear strength and the deformation under low confining pressure were examined by using the modified opening type direct shear apparatus for compacted specimen of weathered granite. The Suction stress-SWCC Method (SSM), which determines the matric suction value for the direct shear test, was proposed to analyze the shear strength behavior for unsaturated state. It was found that the peak shear strength for unsaturated state are arranged uniquely on the same failure line for saturated state when the suction stress is took account as a component of confining pressure.We also found that the shear strengths for unsaturated soil can be estimated by using the shear strength equation applying SSM.
| Original language | English |
|---|---|
| Title of host publication | Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils |
| Pages | 135-140 |
| Number of pages | 6 |
| Publication status | Published - 2010 |
| Externally published | Yes |
| Event | 4th Asia Pacific Conference on Unsaturated Soils - Newcastle, NSW, Australia Duration: Nov 23 2009 → Nov 25 2009 |
Other
| Other | 4th Asia Pacific Conference on Unsaturated Soils |
|---|---|
| Country | Australia |
| City | Newcastle, NSW |
| Period | 11/23/09 → 11/25/09 |
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ASJC Scopus subject areas
- Soil Science
Cite this
Application of suction stress to shear strength in direct shear test for unsaturated soil under low confining pressure. / Kim, Byeongsu; Shibuya, S.; Kato, S.
Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils. 2010. p. 135-140.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Application of suction stress to shear strength in direct shear test for unsaturated soil under low confining pressure
AU - Kim, Byeongsu
AU - Shibuya, S.
AU - Kato, S.
PY - 2010
Y1 - 2010
N2 - The effects of matric suction on the shear strength of unsaturated soil have not been fully understood for low stress level. In this study, the relationships among the matric suction, the shear strength and the deformation under low confining pressure were examined by using the modified opening type direct shear apparatus for compacted specimen of weathered granite. The Suction stress-SWCC Method (SSM), which determines the matric suction value for the direct shear test, was proposed to analyze the shear strength behavior for unsaturated state. It was found that the peak shear strength for unsaturated state are arranged uniquely on the same failure line for saturated state when the suction stress is took account as a component of confining pressure.We also found that the shear strengths for unsaturated soil can be estimated by using the shear strength equation applying SSM.
AB - The effects of matric suction on the shear strength of unsaturated soil have not been fully understood for low stress level. In this study, the relationships among the matric suction, the shear strength and the deformation under low confining pressure were examined by using the modified opening type direct shear apparatus for compacted specimen of weathered granite. The Suction stress-SWCC Method (SSM), which determines the matric suction value for the direct shear test, was proposed to analyze the shear strength behavior for unsaturated state. It was found that the peak shear strength for unsaturated state are arranged uniquely on the same failure line for saturated state when the suction stress is took account as a component of confining pressure.We also found that the shear strengths for unsaturated soil can be estimated by using the shear strength equation applying SSM.
UR - http://www.scopus.com/inward/record.url?scp=84875149784&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875149784&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84875149784
SN - 9780415804806
SP - 135
EP - 140
BT - Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils
ER -