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Prediction for swelling deformation of fractal-textured bentonite and its sand mixtures in salt solution

Published online by Cambridge University Press:  29 May 2019

Guo-sheng Xiang Open the ORCID record for Guo-sheng Xiang [Opens in a new window] ,
Feng Yu ,
Yong-fu Xu ,
Yuan Fang  and
Sheng-hua Xie
Guo-sheng Xiang*
Affiliation:
Department of Civil Engineering, Anhui University of Technology, Anhui, Maanshan 243002, China Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Feng Yu
Affiliation:
Department of Civil Engineering, Anhui University of Technology, Anhui, Maanshan 243002, China
Yong-fu Xu
Affiliation:
Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Yuan Fang
Affiliation:
Department of Civil Engineering, Anhui University of Technology, Anhui, Maanshan 243002, China
Sheng-hua Xie
Affiliation:
Department of Civil Engineering, Anhui University of Technology, Anhui, Maanshan 243002, China
*
*E-mail: xianggsh2011@163.com
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Abstract

Swelling deformation tests of Kunigel bentonite and its sand mixtures were performed in distilled water and NaCl solution. The salinity of NaCl solution has a significant impact on the swelling properties of bentonite, but not on its surface structure. The surface structure was characterized using the fractal dimension Ds. Based on the fractal dimension, a unique curve of the em–pe relationship (em is the void ratio of montmorillonite and pe is the effective stress) at full saturation was introduced to express the swelling deformation of bentonite–sand mixtures. In mixtures with a large bentonite content, the swelling deformation always followed the em–pe relationship. In mixtures with a small bentonite content, when the effective stress reached a threshold, the void ratio of montmorillonite em deviated from the unique em–pe curve due to the appearance of a sand skeleton. The threshold of vertical pressure for mixtures in different solutions and the maximum swelling strains were estimated using the em–pe relationship. The good agreement between estimates and experimental data suggest that the em–pe relationship might be an alternative method for predicting the swelling deformation of bentonite–sand mixtures in salt solution.

Keywords

bentonite–sand mixtureswellingfractalem–pe relationshipeffective stresssalt solution
Type
Article
Information
Clay Minerals , Volume 54 , Issue 2 , June 2019 , pp. 161 - 167
Copyright
Copyright © Mineralogical Society of Great Britain and Ireland 2019 

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Footnotes

Associate Editor: Stephan Kaufhold

References

Chen, Y.G., Zhu, C.M., Ye, W.M., Cui, Y.J. & Chen, B. (2016) Effects of solution concentration and vertical stress on the swelling behavior of compacted GMZ01 bentonite. Applied Clay Science, 124–125, 11–20.Google Scholar
Gökalp, Z., Başaran, M. & Uzun, O. (2011) Compaction and swelling characteristics of sand–bentonite and pumice–bentonite mixtures. Clay Minerals, 46, 449–459.Google Scholar
Helmy, A.K., Ferreiro, E.A., Bussetti, S.G.D. & Peinemann, N. (1998) Surface areas of kaolin, α-Fe2O3, and hydroxyl-Al montmorillonite. Colloid and Polymer Science, 276, 539–543.Google Scholar
Kaufhold, S. & Dohrmann, R. (2016) Distinguishing between more and less suitable bentonites for storage of high-level radioactive waste. Clay Minerals, 51, 289–302.Google Scholar
Kaufhold, S., Dohrmann, R., Götze, N. & Svensson, D. (2017) Characterisation of the second parcel of the alternative buffer material (ABM) experiment – I mineralogical reactions. Clays and Clay Minerals, 65, 27–41.Google Scholar
Komine, H.K., Yasuhara, K.Y. & Murakami, S.M. (2009) Swelling characteristics of bentonites in artificial seawater. Canadian Geotechnical Journal, 46, 177–189.Google Scholar
Liu, L. (2013) Prediction of swelling pressures of different types of bentonite in dilute solutions. Colloids and Surfaces. A Physicochemical and Engineering Aspects, 434, 303–318.Google Scholar
Low, P.F. (1980) The swelling of clay. II. Montmorillonites. Soil Science Society of America Journal, 44, 667–676.Google Scholar
Mollins, L.H., Stewart, D.I. & Cousens, T.W. (1996) Predicting the properties of bentonite–sand mixtures. Clay Minerals, 31, 243–252.Google Scholar
Rao, S.M. & Shivananda, P. (2005) Role of osmotic suction in swelling of salt-amended clays. Canadian Geotechnical Journal, 42, 307–315.Google Scholar
Rao, S.M. & Thyagaraj, T. (2007) Swell–compression behaviour of compacted clays under chemical gradient. Canadian Geotechnical Journal, 44, 520–532.Google Scholar
Risović, D., Mahović Poljaček, S., Furić, K. & Gojo, M. (2008) Inferring fractal dimension of rough/porous surfaces – a comparison of SEM image analysis and electrochemical impedance spectroscopy methods. Applied Surface Science, 255, 3063–3070.Google Scholar
Saiyouri, N., Tessier, D. & Hicher, P.Y. (2004) Experimental study of swelling in unsaturated compacted clays. Clay Minerals, 39, 469–479.Google Scholar
Schanz, T. & Tripathy, S. (2009) Swelling pressure of a divalent-rich bentonite: diffuse double-layer theory revisited. Water Resources Research, 45, W00C12.Google Scholar
Siddiqua, S.S., Blatz, J.B. & Siemens, G.S. (2011) Evaluation of the impact of pore fluid chemistry on the hydro-mechanical behavior of clay based sealing materials. Canadian Geotechnical Journal, 48, 199–213.Google Scholar
Studds, P.G., Stewart, D.I. & Cousens, T.W. (1998) The effects of salt solutions on the properties of bentonite–sand mixtures. Clay Minerals, 33, 651–661.Google Scholar
Sun, D., Cui, H. & Sun, W. (2009) Swelling of compacted sand–bentonite mixtures. Applied Clay Science, 43, 485–492.Google Scholar
Tripathy, S., Bag, R. & Thomas, H.R. (2014) Effects of post-compaction residual lateral stress and electrolyte concentration on swelling pressures of a compacted bentonite. Geotechnical and Geological Engineering, 32, 749–763.Google Scholar
Tripathy, S., Sridharan, A. & Schanz, T. (2004) Swelling pressures of compacted bentonites from diffuse double layer theory. Canadian Geotechnical Journal, 41, 437–450.Google Scholar
Viani, B.E., Low, P.F. & Roth, C.B. (1983) Direct measurement of the relation between interlayer force and interlayer distance in the swelling of montmorillonite. Journal of Colloid and Interface Science, 96, 229–244.Google Scholar
Xiang, G.S., Xu, Y.F. & Jiang, H. (2014) Surface fractal dimension of bentonite and its application in calculation of swelling deformation. Surface Review and Letters, 21, 1450074.Google Scholar
Xu, Y.F., Matsuoka, H. & Sun, D.A. (2003) Swelling characteristics of fractal-textured bentonite and its mixtures. Applied Clay Science, 22, 197–209.Google Scholar
Xu, Y.F., Xiang, G.S., Jiang, H., Chen, T. & Chu, F.F. (2014) Role of osmotic suction in volume change of clays in salt solution. Applied Clay Science, 101, 354–361.Google Scholar
Ye, W.M., Zhang, F., Chen, Y.G., Chen, B. & Cui, Y.J. (2017) Influences of salt solutions and salinization–desalinization processes on the volume change of compacted GMZ01 bentonite. Engineering Geology, 222, 140–145.Google Scholar
Yigzaw, Z.G., Cuisinier, O., Massat, L. & Masrouri, F. (2016) Role of different suction components on swelling behavior of compacted bentonites. Applied Clay Science, 120, 81–90.Google Scholar
Yong, R.N. (1999) Soil suction and soil-water potentials in swelling clays in engineered clay barriers. Engineering Geology, 54, 3–13.Google Scholar
Yong, R.N. & Mohamed, A.M.O. (1992) A study of particle interaction energies in wetting of unsaturated expensive; clays. Canadian Geotechnical Journal, 29, 1060–1070.Google Scholar
Yustres, A., Jenni, A., Asensio, L., Pintado, X., Koskinen, K., Navarro, V. & Wersin, P. (2017) Comparison of the hydrogeochemical and mechanical behaviours of compacted bentonite using different conceptual approaches. Applied Clay Science, 141, 280–291.Google Scholar