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ANALYSIS OF A LARGE DATABASE OF GCL INTERNAL SHEAR STRENGTH RESULTS (2005)

A database of 414 large-scale direct shear test results was assembled to evaluate variables governing geosynthetic clay liner GCL internal shear strength. The tests were conducted by a single independent laboratory over 12 years using procedures consistent with current testing standards. A wide range of GCL types, normal stresses, and shear displacement rates allowed investigation of the effect of reinforcement, pore water pressure generation, and sources of shear strength variability. Reinforced GCLs showed higher strength than unreinforced GCLs, with needle-punched GCLs performing better than stitch-bonded GCLs.

Reference:
Journal of Geotechnical and Geoenvironmental Enginering, ASCE, March, 2005, Vol. 131, No. 3
Organization:
University of Texas at Austin, USA
USA
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