Journal Published Online: 11 May 2022
Volume 50, Issue 4

Experimental Investigation on the Shear Characteristics and Failure Mechanism between Geomembrane/Geotextile Interfaces

CODEN: JTEVAB

Abstract

This paper presents an experimental investigation of the shear behavior of the interface between a high-density polyethylene geomembrane and a needle-punched nonwoven geotextile (GT) under monotonic loading conditions. Direct shear tests were conducted using a self-designed experimental apparatus. The effects of interface types (textured geomembrane (GMX) and smooth geomembrane (GMS)), normal stress levels (50–600 kPa), and shear displacement rates (0.1–100 mm/min) were taken into consideration. Moreover, to better understand the shear behavior, the internal shear strength of GT was compared with the interface strengths. Mechanisms of this shear behavior were analyzed based on the test results. According to these findings, the GMS/GT interface shear deformation was governed by two important stages. The test data also provide microscale insights into the GMX/GT interaction mechanisms over lower and higher normal stress levels, which were governed by three stages.

Author Information

Wang, Hao-Yue
Department of Geotechnical Engineering, Tongji University, Shanghai, China
Feng, Shi-Jin
Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Department of Geotechnical Engineering, Tongji University, Shanghai, China
Shen, Yang
Engineering Institute, Shanghai Construction No.1 (Group) Co., Ltd., Shanghai, China
Chang, Ji-Yun
Department of Geotechnical Engineering, Tongji University, Shanghai, China
Pages: 20
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE20210790
ISSN: 0090-3973
DOI: 10.1520/JTE20210790