Experimental research on internal shear strength of needle-punched GCL

被引：1

作者：

Xu C. ^{[1
]}

Li Z. ^{[2
]}

机构：

[1] Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University

[2] Changning Construction and Traffic Commission

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2010年 / 38卷 / 05期

关键词：

Experimental research; Hydration liquid; Internal shear strength; Needle-punched geosynthetic clay liners(GCL);

D O I：

10.3969/j.issn.0253-374x.2010.05.003

中图分类号：

学科分类号：

摘要：

The paper presents a research on the internal shear strength of a type of needle-punched GCL and the influencing factors on the basis of the laboratory direct shear test. The direct shear apparatus is modified to meet the research requirements. Experimental results show that the internal shear strength of GCL is controlled by the needle-punched fiber, and other elements have minor influence on the internal shear strength; normal stress and hydration liquid both have impacts on GCL's internal shear strength. Shear strength increases with the increasing of normal stress, and the strength reaches the largest value when GCL is hydrated by deioned and distilled water; in practice, GCLs should be pre-hydrated with tap water before being loaded, this measure can increase the stability of barrier systems.

引用

页码：639 / 643

页数：4

共 9 条

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