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Shear Strength Behavior of Two Landfill Clay Liners |
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| Authors: | Jian Wenxing Masashi Kamon Toru Inui Takeshi Katsumi |
| Institution: | 1. Engineering Faculty, China University of Geosciences, Wuhan 430074 2. Department of Global Environmental Engineering, Graduate School of Engineering, Kyoto University,Kyoto, 606-8501, Japan 3. Department of Civil Engineering, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan |
| Abstract: | Direct shear tests were conducted to obtain both the shear strength of compacted clay liners (CCLs) specimens and the interface shear strength between compacted clay liner and base soil. These experiments were conducted under the conditions of five different water contents. The experimental results show that shear strength of both CCLs and CCLs/base interface decreases with the increase in the water content of CCLs and base soil. In addition, the considerate concentration of NaCl in leachate has no deteriorating effect on the shear strength of liners. Triaxial shear tests were also conducted on clay liner specimens to obtain total and effective shear strength under a fast compression. The shear strength c'=100 kPa for sand-bentonite, respectively. These results indicate that the compacted clay-bentonite shows normal consolidation, but that the compacted sand-bentonite exhibits over-consolidation. |
| Keywords: | shear strength behavior direct shear test CU triaxial compression test compacted clay liner landfill |
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