Abstract
An experimental series is performed to study the response of unsaturated silt compacted on the dry and wet side of optimum water content due to change in drainage conditions during the triaxial test process. Soil samples were compacted at water content of 15% and 25% maintaining degree of compaction at 85%. The drainage conditions for pore air and pore water pressure was changed for isotropic consolidation, monotonic shear and water infiltration processes. The isotropic consolidation was performed by keeping pore air pressure drained and pore water pressure undrained. During monotonic shear both pore air and water pressures were undrained, whereas, the water infiltration was carried in fully drained conditions. The water infiltration was carried by keeping deviatoric stress and axial strain constant on the specimen. It was observed that the drainage conditions affect the deformation behavior of soil and results in a rapid decrease in specimen volume. Moreover, the stress paths for the specimens with constant deviatoric stress moved towards the failure line whereas the stress paths for the specimens with constant axial strain moved along the reference failure line.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Brand EW (1981) Some thoughts on rain-induced slope failures. In: Proceedings of 10th international conference on soil mechanics and foundation engineering, pp 373–376
Carman P (1956) Flow of gases through porous media. Academic Press, New York
Estabragh AR, Javadi AA (2012) Effect of suction on volume change and shear behaviour of an overconsolidated unsaturated silty soil. Geomech Eng 4(1):55–65. https://doi.org/10.12989/gae.2012.4.1.055
Farooq K, Rolando O, Ikuo T (2004) Response of unsaturated sandy soils under constant shear stress drained condition. Soils Found 44(2):1–13. https://doi.org/10.3208/sandf.44.2_1
Fourth Committee for Soil Classification and Nomenclature. Japanese Society of Pedology (2003) Unified soil classification system of Japan (2nd approximation). Hakuyuusha, Tokyo (in Japanese)
Fredlund DG, Rahardjo H (1993) Soil mechanics for unsaturated soils. https://doi.org/10.1016/0267-7261(93)90011-F
Gui MW, Wu YM (2014) Failure of soil under water infiltration condition. Eng Geol 181:124–141. https://doi.org/10.1016/j.enggeo.2014.07.005
Habasimbi P, Nishimura T (2019) Soil water characteristic curve of an unsaturated soil under low matric suction ranges and different stress conditions. Int J Geosci 10:39–56. https://doi.org/10.4236/ijg.2019.101004
Irfan M, Uchimura T (2015) Helical filter paper technique for uniform distribution of injected moisture in unsaturated triaxial specimens. Soils Found 55(4):749–760. https://doi.org/10.1016/j.sandf.2015.06.008
JGS 0527-2009. Method for triaxial compression test on unsaturated soils (standards of Japanese geotechnical society)
Karami Q, Maleki M, Makarchian M, Karijani MS (2015) Factors affecting mechanical behavior of unsaturated silty sand on wetting path. J GeoEng 10(2):45–51. https://doi.org/10.6310/jog.2015.10(2).2
Karube D, Kawai K (2001) The role of pore water in the mechanical behavior of unsaturated soils. Geotech Geol Eng 19(3–4):211–241. https://doi.org/10.1023/A:1013188200053
Leong EC, Nyunt TT, Rahardjo H (2013) Triaxial testing of unsaturated soils. In: Multiphysical testing of soils and shales, pp 33–44. https://doi.org/10.1007/978-3-642-32492-5_3
Li P, Vanapalli S, Li T (2016) Review of collapse triggering mechanism of collapsible soils due to wetting. J Rock Mech Geotech Eng 8(2):256–274. https://doi.org/10.1016/j.jrmge.2015.12.002
Lin HA, Wang CC, Wang XH (2018) A simplified method to estimate the total cohesion of unsaturated soil using an UC test. Geomech Eng 16(6):599–608. https://doi.org/10.12989/gae.2018.16.6.599
Nishimura T (2014) Influence of seepage event on cyclic triaxial behavior of a compacted unsaturated soil. In: Proceedings 6th international conference on unsaturated soils, sydney, pp 791–796
Oka F, Kodaka T, Suzuki H, Kim YS, Nishimatsu N, Kimoto S (2010) Experimental study on the behavior of unsaturated compacted silt under triaxial compression. Soils Found 50(1):27–44. https://doi.org/10.3208/sandf.50.27
Rasool AM, Kuwano J (2018) Influence of matric suction on instability of unsaturated silty soil in unconfined conditions. Int J GEOMATE 14(42):1–7. https://doi.org/10.21660/2018.42.7115
Shimizu M, Sakamoto S, Nishioka T (2006) Effects of drainage conditions on the shear strength of unsaturated soil. In: 4th international conference on unsaturated soils, pp 1223–1234. https://doi.org/10.1061/40802(189)100
Toyota H, Takada S (2012) Technique for undrained triaxial tests on unsaturated soils using active control of pore-air pressure. Geotech Test J 35(3):480–489. https://doi.org/10.1520/GTJ104065
Yang S-R, Lin H-D, Huang W-H (2012) Variation of initial soil suction with compaction conditions for clayey soils. J Mech 28(3):431–437. https://doi.org/10.1017/jmech.2012.52
Yoshikawa T, Noda T, Kodaka T (2015) Effects of air coupling on triaxial shearing behavior of unsaturated silty specimens under constant confining pressure and various drained and exhausted conditions. Soils Found 55(6):1372–1387. https://doi.org/10.1016/j.sandf.2015.10.004
Zhang LL, Fredlund DG, Fredlund MD, Wilson GW (2014) Modeling the unsaturated soil zone in slope stability analysis. Can Geotech J 51(12):1384–1398. https://doi.org/10.1139/cgj-2013-0394
Acknowledgements
The Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and Department of Civil and Environmental Engineering, Saitama University, Japan are gratefully acknowledged for providing research facilities and financial assistance.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Rasool, A.M., Kuwano, J. & Tachibana, S. Experimental Study on the Response of Unsaturated Silt Due to Change in Drainage Conditions During the Triaxial Test Process. Geotech Geol Eng 38, 1707–1719 (2020). https://doi.org/10.1007/s10706-019-01125-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10706-019-01125-3