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D6496 – Standard Test Method Technical Guide
ASTM D6496/D6496M-23a specifies the standard test method for determining the average bonding peel strength between the top and bottom layers of needle-punched geosynthetic clay liners (GCLs). This index test is essential for quality control of the manufacturing bonding process.
📐 Scope and Significance
The test method (Section 1) covers the laboratory determination of the average bonding strength of a GCL. The standard requires values to be reported in SI or inch-pound units independently (Section 1.2). The method serves as an index test to evaluate the quality of the needle-punching bonding process (Section 5).
⚠️ Important: Combining SI and inch-pound values results in nonconformance with the standard (Section 1.2). Always select one unit system for the entire procedure.