Experimental Study on Effect of Temperature on Geo-Mechanical Properties of Geomembrane

被引：0
作者：
Lin H. [1 ,2 ]
Chen X. [1 ]
Zeng Y. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Nanchang University, Nanchang
[2] Key Laboratory of Tailings Reservoir Engineering Safety of Jiangxi Province, Nanchang
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2022年 / 47卷 / 06期
关键词：
geomembrane; geosynthetics; geotechnical engineering; interface shear strength; temperature; tensile strength;
D O I：
10.3799/dqkx.2021.103
中图分类号：
学科分类号：
摘要：
HDPE geomembrane (GM) may be in high temperature condition in environmental protection projects such as urban sanitary landfill. Most of the existing experimental studies on the mechanical properties of GM were carried out at normal temperature, the temperature effect of the mechanical properties of GM relates to in-site slope stability and engineering safety. The temperature-controlled tensile tests of GM, interface shear tests of GM/sand interface and GM / non-woven geotextile (GT) interface under different temperature conditions were carried out to reveal the influence of temperature on the geo-mechanical properties of GM. Qualitative and quantitative effects of temperature on the geo-mechanical properties are revealed through comparative analysis of the tensile properties of GM and the shear properties of GM interface under different temperature conditions. The test results show that the tensile strength of GM changes significantly with temperature, and the tensile strength obtained at high temperature (above 70 ℃) can be reduced by nearly 80% compared with the normal temperature situation. The effect of temperature on the shear properties of GM/GT interface is obviously greater than that of GM/sand interface, and the temperature effect of GM geo-mechanical properties deserve more attention of engineers. © 2022 China University of Geosciences. All rights reserved.
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页码：2165 / 2174
页数：9
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