ANALYSIS OF A LARGE DATABASE OF GCL INTERNAL SHEAR STRENGTH RESULTS

A database of 414 large scale direct shear test results was assembled to evaluate variables governing geosynthetic clay liner (GCL) internal shear strength. This database, referred to as the GCL shear strength (GCLSS) database, is used to define upper and lower bounds on peak and large displacement GCL internal shear strength. In addition, an analysis of the results in the GCLSS database allows evaluation of: (1) the performance of GCLs manufactures using different types of reinforcement, (2) pore water pressures during shearing (indirect evaluation), and (3) the GCL internal shear strength variability. Evaluation of reinforced and unreinforced GCL test results indicates that, in addition to reinforcement variability, bentonite variability contributes to the shear strength variability of reinforced GCLs. Peel strength was found not to be a good indicator of the contribution of fibers to the GCL peak shear strength.

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  • English

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  • Accession Number: 00988165
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 5 2005 12:00AM