ASTM International Committee D35 on Geosynthetics has announced a work item for geosynthetic clay liners. The work item, WK32756 (“Standard Test Method for Determining the Internal and Interface Shear Resistance of Geosynthetic Clay Liner by the Direct Shear Method”) is a work item revision to existing standard D6243-09. This work involves the addition of an appendix to provide the user with guidelines of what test parameters are required to be specified to obtain the intended shear result.

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