The Interface Shear Behavior Of Hdpe And Ccls

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In order to design composite liner, the interface shear behavior of HDPE and CCLs needs to be considered since it causes risk of sliding failure. During landfill operation, the interface shear behavior can be influenced by many factors. Wastes are placed in the landfill sites with specific sequences, the landfill final cover is gradually built with these sequences. As a result, parts of the slope liner can be exposed to F-T cycles in landfill located in cold regions. Thus, the temperature change is an important factor which cannot be ignored. In Canada, there is a difference of approximately 50℃ between the summer and the winter (South Ontario, 2015). This drastic temperature difference can form freeze-thaw (F-T) cycle. These F-T cycles and affect the interface shear behavior of the liner and thus jeopardize the safety of the landfill. Previous studies were conducted on the influence of the F-T cycles on soil materials (Stark(2001); Robert et al (1991) and Fishman & Pal (1994)). However, there is no investigations performed on the interface shear behavior of compacted Leda clay/HDPE material, and the influence of F-T cycles on this interface. Thus, in order to understand the behavior and resistance of interface composite liner in cold regions, particularly in Canada, a series of experiments have been conducted to study the effects of varying numbers of F-T cycles on interface shear behavior and strength of Leda clay/smooth HDPE. The objective of this paper is to present

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