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ASTM D5323

Standard Practice for Determination of 2 % Secant Modulus for Polyethylene Geomembranes

Standard by ASTM, 2023-05-22

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  • Language: English
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About This Item

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ASTM D5323 is the ASTM standard for determining the 2% secant modulus of polyethylene geomembranes. It provides a defined test practice for evaluating stiffness at a specific strain level, which helps users compare material behavior in a consistent way. For geomembrane selection, engineering review, and quality control, this standard supports more reliable interpretation of performance-related properties and helps reduce uncertainty when assessing polyethylene liner materials.

Purpose of ASTM D5323

The purpose of this standard is to establish a practice for measuring the 2% secant modulus of polyethylene geomembranes under controlled test conditions. That makes it useful when a project needs a consistent way to characterize how a geomembrane responds to deformation at low strain. ASTM D5323 helps create repeatable results that can be used in material evaluation, specification review, and comparison of products intended for containment and lining applications.

Common use cases of ASTM D5323

This standard is commonly used when testing polyethylene geomembranes for engineering projects, procurement review, and quality assurance programs. It may be applied during product qualification, incoming material checks, or laboratory testing where stiffness at 2% strain is a relevant property. ASTM D5323 is also useful for comparing candidate geomembranes and documenting performance data in support of design decisions, compliance checks, and technical submittals.

Why ASTM D5323 matters

ASTM D5323 matters because a clear and repeatable modulus measurement supports better material comparison and more consistent decision-making. In practice, that can improve compliance review, reduce ambiguity in specifications, and help verify that polyethylene geomembranes meet project expectations. By standardizing how the 2% secant modulus is determined, the document supports quality control and lowers the risk of inconsistent test interpretation across suppliers, laboratories, or project teams.

  • Polyethylene geomembrane stiffness at 2% strain
  • Standardized test practice for comparison
  • Useful for quality control and material review
  • Supports procurement and compliance documentation
  • Focused on consistent laboratory evaluation
SKU: 8e985726b8d4

  • Publication Date: 2023-05-22
  • Publisher: ASTM

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