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Predicting Swelling Behavior of a Na+-Bentonite Used in GCLs

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Abstract

The swelling behavior of a Na+-bentonite used in geosynthetic clay liners with lower dry unit weights (less than about 11 kN/m3) was investigated experimentally, and analyzed by diffuse double layer (DDL) theory. Four types of liquid were used. It has been found that the measured swelling pressures are about 20% of that predicted by DDL theory. There are linear relationships between the calculated double layer thickness and the measured corresponding free swelling index and liquid limit.

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Acknowledgements

This research work has been funded by National Natural Science Foundation of China (NSFC) with a Grant No. 51578333.

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Authors and Affiliations

  1. Department of Civil Engineering and Architecture, Saga University, 1 Honjyo, Saga, 840-8502, Japan

    Jin-Chun Chai

  2. Department of Civil Engineering and State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Minhang District, Shanghai, 200240, China

    Shui-Long Shen

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  1. Jin-Chun Chai
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  2. Shui-Long Shen
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Correspondence to Jin-Chun Chai.

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Chai, JC., Shen, SL. Predicting Swelling Behavior of a Na+-Bentonite Used in GCLs. Int. J. of Geosynth. and Ground Eng. 4, 9 (2018). https://doi.org/10.1007/s40891-018-0126-x

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  • DOI: https://doi.org/10.1007/s40891-018-0126-x

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