Effect of Temperature on Internal Shear Strength Mechanism of Needle-Punched GCL

被引：7

作者：

Yang, Yang ^{[1
]}

Shi, Jianyong ^{[1
]}

Qian, Xuede ^{[2
]}

机构：

[1] Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210024, Peoples R China

[2] Michigan Dept Environm Great Lakes & Energy EGLE, Mat Management Div, 525 West Allegan St Lansing, Lansing, MI 48933 USA

来源：

SUSTAINABILITY | 2021年 / 13卷 / 08期

关键词：

temperature; needle-punched GCL; shear strength; large direct shear test; bentonite; fibers; GEOSYNTHETIC CLAY LINER; THE-ART REPORT; LARGE DATABASE; INTERFACE; STATE; POLYPROPYLENE; BEHAVIOR; FAILURE;

D O I：

10.3390/su13084585

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Needle-punched geosynthetic clay liner (NPGCL) has been widely used in landfills. The internal strength of the GCL changes with temperature variation, which affects its application in landfills. A large-scale temperature-controlled direct shear apparatus was developed to study the internal shear strength characteristics of GCL affected by temperature. The internal strength of the GCL was dependent on the bentonite, the fibers, and the interaction between the fibers and the bentonite. The influence of temperature on the internal strength of the GCL was mainly reflected in the displacement at peak strength. However, the peak strength was basically unchanged. The strength of the bentonite and the fibers-reinforced bentonite increased when the temperature increased. The tensile strength of needle-punched fibers decreased with increasing temperature. The peak strength displacement of the fibers-reinforced bentonite decreased with increasing temperature.

引用

页数：17

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