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Effect of Freeze-Thaw Cycling Concurrent with MSW Landfill Leachate on the Hydraulic Conductivity of Geosynthetic Clay Liner

  • Bao Wang
  • Bin Chen
  • Dou Tongtong
  • Lou Wang
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

Abstract

A study was conducted to determine the effect of freeze-thaw cycling concurrent with municipal solid waste (MSW) landfill leachate on the hydraulic conductivity of a geosynthetic clay liner (GCL). The GCL was hydrated with MSW landfill leachate and subsequently subjected to 5, 10, 15 and 20 freeze-thaw cycles. After the prescribed numbers of freeze-thaw cycles was met, the hydraulic conductivity of the GCL was tested in a flexible wall permeameter. Hydraulic conductivity of GCL experienced freeze-thaw cycles was slightly higher than those without frozen, with the hydraulic conductivity increased with increasing of number of freeze-thaw cycles. The increase in the hydraulic conductivity of GCL could be a result of the contraction of double-layer, resulting from the increases in the concentrations of cations in the pore water (i.e., MSW landfill leachate) induced by freeze.

Keywords

Geosynthetic clay liners Freeze-thaw MSW landfill leachate Hydraulic conductivity 

Notes

Acknowledgment

Financial support for this study was provided by National Natural Science Foundation of China (NSFC), under Grant No. 41602291.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Environmental and Municipal EngineeringXi’an University of Architecture and TechnologyXi’anChina
  2. 2.Department of Civil EngineeringXi’an University of Architecture and TechnologyXi’anChina
  3. 3.Xi’an Branch of China Urban Construction Design and Research Institute Co., Ltd.Xi’anChina

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