ASTM D6243/D6243M
Standard Test Method for Determining the Internal and Interface Shear Strength of Geosynthetic Clay Liner by the Direct Shear Method
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About This Item
ASTM D6243/D6243M is the standard test method for determining the internal and interface shear strength of geosynthetic clay liner by the direct shear method. It is used to evaluate how a geosynthetic clay liner performs under shear loading, helping users compare materials and support technical decisions in design, testing, and quality control. For projects that rely on consistent liner behavior, this ASTM standard provides a clear, repeatable basis for shear strength assessment.
Overview of ASTM D6243/D6243M
This standard focuses on direct shear testing for geosynthetic clay liner, addressing both internal shear strength and interface shear strength. In practice, it helps define how the liner behaves within itself and against an adjacent material or surface under shear conditions. ASTM D6243/D6243M is commonly used as a technical reference when consistent laboratory evaluation is needed for product qualification, specification review, or performance comparison.
Common use cases of ASTM D6243/D6243M
ASTM D6243/D6243M is commonly used by laboratories, manufacturers, and engineering teams involved with geosynthetic clay liner testing. It supports evaluation of liner performance during procurement, specification development, and project acceptance workflows. The direct shear method is especially relevant when comparing material response under loading conditions that may affect installed liner systems. It is also useful when documenting test results for compliance-oriented reviews or internal quality programs.
Benefits of using ASTM D6243/D6243M
Using ASTM D6243/D6243M helps bring consistency to shear strength testing and reduces uncertainty when comparing geosynthetic clay liner products. It supports more reliable specification language, clearer product evaluation, and better alignment between buyers, suppliers, and testing labs. Because the method addresses both internal and interface behavior, it can aid in identifying potential performance concerns early and improving confidence in material selection and project planning.
- Direct shear method for geosynthetic clay liner
- Measures internal and interface shear strength
- Supports laboratory comparison and QC testing
- Useful for specification and compliance reviews
- Publication Date: 2020-03-25
- Publisher: ASTM
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