A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Shear-Induced Matric Suction in Unsaturated Clayey Sand during Constant Water Content Triaxial Tests
Constant water content (CW) triaxial tests were performed on unsaturated clayey sand to simulate undrained loading condition. The CW test is performed in which pore-air is allowed to drain while pore-water is kept undrained. Volume change mainly occurs due to drainage of pore-air during shearing. This study investigates the relationship between the change of matric suction during shearing and the initial matric suction prior to shearing. Results show that in general the matric suction decreases during shearing for the range of initial matric suction used in this study. The percent reduction of matric suction relative to the initial matric suction was approximately 40 to 50% and the value increases as the initial matric suction increases. The amount of reduction is related to the development of excess pore pressure and the degree of saturation at failure. Based on the results of this study, the analysis of unsaturated undrained shear strength based on the initial matric suction is not appropriate.
Shear-Induced Matric Suction in Unsaturated Clayey Sand during Constant Water Content Triaxial Tests
Constant water content (CW) triaxial tests were performed on unsaturated clayey sand to simulate undrained loading condition. The CW test is performed in which pore-air is allowed to drain while pore-water is kept undrained. Volume change mainly occurs due to drainage of pore-air during shearing. This study investigates the relationship between the change of matric suction during shearing and the initial matric suction prior to shearing. Results show that in general the matric suction decreases during shearing for the range of initial matric suction used in this study. The percent reduction of matric suction relative to the initial matric suction was approximately 40 to 50% and the value increases as the initial matric suction increases. The amount of reduction is related to the development of excess pore pressure and the degree of saturation at failure. Based on the results of this study, the analysis of unsaturated undrained shear strength based on the initial matric suction is not appropriate.
Shear-Induced Matric Suction in Unsaturated Clayey Sand during Constant Water Content Triaxial Tests
Awad, Muwafaq (author) / Sasanakul, Inthuorn (author)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 853-862
2019-03-21
Conference paper
Electronic Resource
English
Shear-Induced Matric Suction in Unsaturated Clayey Sand during Constant Water Content Triaxial Tests
| British Library Conference Proceedings | 2019
| Taylor & Francis Verlag | 2020
Influence of Matric Suction on Shear Strength Behavior of Unsaturated Silty Sand
| British Library Conference Proceedings | 2012
Influence of Matric Suction on Shear Strength Behavior of Unsaturated Silty Sand
| Trans Tech Publications | 2012