International Journal on Advanced Science, Engineering and Information Technology, Vol. 2 (2012) No. 2, pages: 156-158, DOI:10.18517/ijaseit.2.2.175

Interface Shear Strength of Geosynthetic Clay Liner (GCL) and Residual Soil

Mohd Izzuddin Zaini, Anuar Kasa, Khairul Anuar Mohd Nayan

Abstract

In this study, direct shear box with dimension of 100 mm x 100 mm was used to determine interface shear strength of a GCL and compacted residual soil at optimum moisture content. The tests were carried out using dry GCL sample at shearing rate of 0.5 mm/min. Normal stresses used were between 100 kPa to 300 kPa to represent the depth of 20 meters of solid waste (15 kN/m3). The needle-punched GCL was tested for both sides, woven and non-woven. Results showed that the residual soil, classified as CL according to the Unified Soil Classification System (USCS) with a hydraulic conductivity of 7.05 to 5.54 x 10-9 m/s, was suitable to be used as compacted clay liner (CCL). Test results on the interface shear strength of woven and non-woven GCL with residual soil in terms of internal friction angle were 33° and 37°, respectively.

Keywords:

Interface shear strength; geosynthetic clay liner (GCL); residual soil

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