Cyclic shear test of a geosynthetic clay liner for a secondary containment application

C. Athanassopoulos, Patrick Joseph Fox, J. D. Ross

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

This note presents the results of a cyclic shear test of a secondary containment liner system composed of sand/GCL/sand. The GCL was a needle-punch-reinforced woven/nonwoven product with a thin geomembrane laminated to the nonwoven side. Under a normal stress of 100 kPa, shearing occurred at the sand/geomembrane interface and the GCL sustained no visible damage after 25 cycles of loading with a displacement amplitude of 20 mm and a frequency of 1 Hz. Material property tests performed on pre-cyclic and post-cyclic GCL samples provided additional evidence that the GCL specimen did not sustain damage due to cyclic loading. Analysis of the cyclic loading data indicates hysteretic stress-displacement behavior that is broadly similar to natural soils and displays strength and stiffness degradation as well as reduction in damping ratio with continued cycling.

Original languageEnglish (US)
Pages (from-to)107-111
Number of pages5
JournalGeosynthetics International
Volume17
Issue number2
DOIs
StatePublished - Apr 1 2010

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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