Abstract
Bentonite is generally used as buffer or backfill material in geological repositories and its mechanical behavior is important to affect surrounding structures. In this paper, cyclic shrinkage-swelling tests are performed on Heishan bentonite taking into account the effect of initial moisture content. Results reveal that the shrinkage-swelling behavior of Heishan bentonite relies on initial moisture content and an obvious water retention property is obtainedwith the increases of initial moisture content. To investigate the accurate determination of aforementioned behavior of studied bentonite during drying and wetting cycle, the captured image of digital camera and the binary image processing technique are employed in this study. A simplified analytical model is proposed to simulate the shrinkage-swelling behavior at different initial moisture contents and the model parameters are calibrated by experimental results of Heishan bentonite. Based on the model performance, the model simulation agrees well with the tests and the proposed approach is able to predict the behavior of Heishan bentonite.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Alonso EE, Romero E, Hoffmann C, Escudero EG (2005) Expansive bentonite/sand mixture in cyclic controlled suction drying and wetting. Engineering Geology 81(3):213–226, DOI: https://doi.org/10.1016/j.enggeo.2005.06.009
Alonso EE, Vaunat J, Gens A (1999) Modelling the mechanical behaviour of expansive clays. Engineering Geology 54:173–183, DOI: https://doi.org/10.1016/S0013-7952(99)00079-4
Chen YG Jia LY, Li Q, Ye WM, Cui YJ, Chen B (2017) Swelling deformation of compacted GMZ Bentonite experiencing chemical cycles of sodium-calcium exchange and salinization-desalinization effect. Applied Clay Science 141:55–63, DOI: https://doi.org/10.1016/j.clay.2017.02.016
Cui YJ, Yahia-Aissa M, Delage P (2002) A model for the volume change behavior of heavily compacted swelling clays. Engineering Geology 64:233–250, DOI: https://doi.org/10.1016/S0013-7952(01)00113-2
Estabragh AR, Parsaei B, Javadi AA (2015) Laboratory investigation of the effect of cyclic wetting and drying on the behaviour of an expansive soil. Soils and Foundations 55(2):304–314, DOI: https://doi.org/10.1016/j.sandf.2015.02.007
Gao Y, Sun DA, Wu YJ (2018) Volume change behavior of unsaturated compacted weakly expansive soils. Bulletin of Engineering Geology & the Environment 77:837–848, DOI: https://doi.org/10.1007/s10064-017-1142-0
Julina M, Thyagaraj T (2018) Determination of volumetric shrinkage of an expansive soil using digital camera images. International Journal of Geotechnical Engineering 15(5):624–632, DOI: https://doi.org/10.1080/19386362.2018.1460961
Li K, Nowamooz H, Chazallon C, Migualt B (2018) Limit deformation analysis of unsaturated expansive soils during wetting and drying cycles. Soil Mechanics and Foundation Engieering 55(1):33–39, DOI: https://doi.org/10.1007/s11204-018-9498-0
Li K, Nowamooz H, Chazallon C, Migualt B (2019) Mechanical behaviour of densely compacted expansive soils during wetting and drying cycles: An analytical model based on shakedown concept. European Journal of Environmental and Civil Engineering 25(6):1065–1079, DOI: https://doi.org/10.1080/19648189.2019.1568307
Liu JF, Ni HY, Chen YG, Wu Y, Song SB, Cao XL, Bao WB, Pu H, Mao XB (2018) Research on water retention and microstructure characteristics of compacted GMZ bentonite under free swelling conditions. Environmental Earth Sciences 77:583, DOI: https://doi.org/10.1007/s12665-018-7760-4
Malekzadeh M, Bilsel H (2014) Hydro-mechanical behavior of polypropylene fiber reinforced expansive soils. KSCE Journal of Civil Engineering 18(11):2028–2033, DOI: https://doi.org/10.1007/s12205-014-0389-2
Ng CWW, Zhou C, Chiu CF (2020) Constitutive modelling of state-dependent behaviour of unsaturated soils: An overview. Acta Geotechnica 15:2705–2725, DOI: https://doi.org/10.1007/s11440-020-01014-7
Ni HY, Liu JF, Guo JN, Yang DS, Chen YG (2020) Numerical modelling on water retention and permeability of compacted GMZ bentonite under free-swelling. International Journal of Numerical and Analytical Methods in Geomechanics 44:1619–1633, DOI: https://doi.org/10.1002/nag.3078
Niu WJ, Ye WM, Song XY (2020) Unsaturated permeability of GMZ bentonite under partially free-swelling conditions. Acta Geotechnica 15:1095–1124
Nowamooz H, Jahangir E, Masrouri F (2013) Volume change behavior of a swelling soil compacted at different initial states. Engineering Geology 153:25–34, DOI: https://doi.org/10.1016/j.enggeo.2012.11.010
Puppala AJ, Katha B, Hoyos LR (2004) Volumetric shrinkage strain measurements in expansive soils using digital imaging technology. ASTM Geotechnical Testing Journal 27(6):547–556, DOI: https://doi.org/10.1520/GTJ12069
Singh SP, Rout S, Tiwari A (2018) Quantification of desiccation cracks using image analysis technique. International Journal of Geotechnical Engineering 12(4):383–388, DOI: https://doi.org/10.1080/19386362.2017.1282400
Sun WJ, Sun DA (2012) Coupled modeling of hydro-mechanical behavior of unsaturated compacted expansive soils. International Journal for Numerical and Analytical Methods in Geomechanics 36:1002–1022, DOI: https://doi.org/10.1002/nag.1036
Wang Q, Tang AM, Cui YJ, Delage P, Gamtmiri B (2012) Experimental study on the swelling behaviour of bentonite/claystone mixture. Engineering Geology 124:59–66, DOI: https://doi.org/10.1016/j.enggeo.2011.10.003
Wheeler SJ, Sharma RJ, Buisson MSR (2003) Coupling of hydraulic hysteresis and stress-strain behavior in unsaturated soils. Geotechnique 53:41–54, DOI: https://doi.org/10.1139/T02-119
Zhang JH, Li F, Zeng L, Peng JH, Li J (2021) Numerical simulation of the moisture migration of unsaturated clay embankments in southern China considering stress state. Bulletin of Engineering Geology and the Environment 80:11–24, DOI: https://doi.org/10.1007/s10064-020-01916-6
Zhang JH, Peng JH, Zhang AS, Li J (2020) Prediction of permanent deformation for subgrade soils under traffic loading in Southern China. International Journal of Pavement Engineering, DOI: https://doi.org/10.1080/10298436.2020.1765244
Zhao NF, Ye WM, Chen B, Cui YJ (2017) Investigation on swelling-shrinkage behavior of unsaturated compacted GMZ bentonite on wetting-drying cycles. Bulletin of Engineering Geology and the Environment 78:617–627, DOI: https://doi.org/10.1007/s10064-017-1095-3
Zhu YH, Ye W, Wang Q, Lu Y, Chen Y (2020) Anisotropic volume change behavior of uniaxial compacted GMZ bentonite under free swelling condition. Engineering Geology 278:105821, DOI: https://doi.org/10.1016/j.enggeo.2020.105821
Acknowledgments
The financial support of National Natural Science Foundation of China (Grant No: 51808306 and 52009123) is greatly acknowledged in our work.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, SC., Li, K., Sun, KM. et al. Impact of Initial Moisture Content on the Shrinkage-Swelling Behavior of Heishan Bentonite. KSCE J Civ Eng 26, 550–555 (2022). https://doi.org/10.1007/s12205-021-0060-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12205-021-0060-7