The effect of freeze-thaw cycles on hydraulic conductivity (HC) of compacted clay liner (CCL) and geosynthetic clay liners (GCLs) in water retaining structures and municipal solid waste landfills is a key issue in designing barrier systems in those structures. In this study the effect of freeze-thaw cycles on the hydraulic conductivity of a compacted clayey soil from Nazlou Region of Urmia City and a geosynthetic clay liner; and the impact of effective stress on the hydraulic conductivity change of clayey soil in these cycles were investigated. A flexible-wall triaxial hydraulic conductivity apparatus was used to measure the HC of the specimens subjected to freeze-thaw cycles. During the freezing process ice lenses grow in soil sample and when the ice lenses melt, a network of cracks is left and the HC increases. Increasing the effective stress reduces the increased hydraulic conductivity due to freeze-thaw cycles. The results show that on the contrary to compacted clayey soil, the application of intermittent freeze-thaw cycles does not significantly affect the HC of GCL even when GCL sample is subjected to extreme climatic conditions during which it continues to exhibit good performance as a hydraulic barrier.
Badv, K., & Gholikhani, M. (2014). Effect of Freeze - Thaw Cycles on Hydraulic Conductivity of Compacted Clayey Soil and Geosynthetic Clay Liner (GCL). Water and Soil Science, 24(2), 31-40.
MLA
Kazem Badv; Mehdi Gholikhani. "Effect of Freeze - Thaw Cycles on Hydraulic Conductivity of Compacted Clayey Soil and Geosynthetic Clay Liner (GCL)". Water and Soil Science, 24, 2, 2014, 31-40.
HARVARD
Badv, K., Gholikhani, M. (2014). 'Effect of Freeze - Thaw Cycles on Hydraulic Conductivity of Compacted Clayey Soil and Geosynthetic Clay Liner (GCL)', Water and Soil Science, 24(2), pp. 31-40.
VANCOUVER
Badv, K., Gholikhani, M. Effect of Freeze - Thaw Cycles on Hydraulic Conductivity of Compacted Clayey Soil and Geosynthetic Clay Liner (GCL). Water and Soil Science, 2014; 24(2): 31-40.
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