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Experimental Investigation of Volume Change and Hydraulic Conductivity on Geosynthetic Clay Liner

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Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2 (ICEG 2018)

Part of the book series: Environmental Science and Engineering ((ENVENG))

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Abstract

The objective of this paper is to evaluate the hydraulic conductivity of a commercially-available geosynthetic clay liner (GCL) by Flexible-wall permeameter. The GCLs are produced by the same factory, but the content of bentonite is different. And hydraulic conductivity (HC) tests are performed on GCL specimens with different HC results (i.e., 10−9 cm/s and 10−6 cm/s). After 18 days, specimens were complete saturated under backpressure 20 kPa. The results of these tests indicate that there is a decrease in hydraulic conductivity of the GCL may be expected due to the consolidation of GCL. Measured hydraulic conductivities of GCL specimens with high HC permeated with distilled water under 20 kPa stress conditions that there is a slightly decrease and the HC keep in one order of magnitude, whereas measured hydraulic conductivities of low HC GCL specimens tested under similar conditions the HC keep in one order of magnitude. The test results show that similar hydraulic conductivity values are obtained for GCL specimens after complete saturated. In addition, the flow rate decreases with the time of test. The research findings may be of interest to researchers and engineers who design liners for landfills and other liquid containment facilities.

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Acknowledgements

The research was supported by the Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, (Lanzhou University), China (No.201603), the Doctoral Program of Higher Education of China (grant no. 20110211110025, 20120211120008) and the Gansu Province Science Foundation for Youths (No.1208RJYA040). Sincere thanks to the reviewers for their time and courtesy, for assisting the authors to maintain the quality of the paper.

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Authors and Affiliations

  1. Key Laboratory of Mechanics on Disaster and Environment in Western China, Lanzhou University, Ministry of Education, Lanzhou, China

    Guangwei Zhang, Hhuyuan Zhang, Jinwen Liu, Lang Zhou & Ming Yan

  2. PetroChina Research Institute of Exploration & Development-Northwest, Lanzhou, China

    Guangwei Zhang

  3. Geo-Environment Monitoring Institute of Gansu Province, Lanzhou, China

    Jinwen Liu

  4. School of Resource and Environmental Science, Lanzhou University, Lanzhou, China

    Jinfang Wang

Authors
  1. Guangwei Zhang
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  2. Hhuyuan Zhang
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  3. Jinwen Liu
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  4. Lang Zhou
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  5. Ming Yan
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  6. Jinfang Wang
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Corresponding author

Correspondence to Guangwei Zhang .

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Editors and Affiliations

  1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China

    Liangtong Zhan

  2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China

    Yunmin Chen

  3. Department of Civil Engineering, Monash University, Clayton, VIC, Australia

    Abdelmalek Bouazza

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Zhang, G., Zhang, H., Liu, J., Zhou, L., Yan, M., Wang, J. (2019). Experimental Investigation of Volume Change and Hydraulic Conductivity on Geosynthetic Clay Liner. In: Zhan, L., Chen, Y., Bouazza, A. (eds) Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2. ICEG 2018. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-2224-2_89

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