ASTM D8281/D8281M
Standard Test Method for Determining the Presence of Expanding Clays in Rock for Erosion Control Using Ethylene Glycol
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About This Item
ASTM D8281/D8281M is the ASTM standard titled Standard Test Method for Determining the Presence of Expanding Clays in Rock for Erosion Control Using Ethylene Glycol. It provides a focused test approach for identifying rock materials that may contain expanding clays, which can affect how well rock performs in erosion control applications. By helping users evaluate this characteristic before use, the standard supports better material selection and more reliable project decisions.
Purpose of ASTM D8281/D8281M
The purpose of ASTM D8281/D8281M is to define a consistent test method for detecting the presence of expanding clays in rock using ethylene glycol. This is important because expanding clay minerals may influence the suitability and durability of rock intended for erosion control. The standard gives engineers, laboratories, and material suppliers a common technical reference for assessing this condition in a repeatable way. As an ASTM standard, it supports clearer evaluation and more consistent acceptance decisions.
Common use cases of ASTM D8281/D8281M
This standard is commonly used when rock is being considered for erosion control projects and needs to be checked for clay-related expansion behavior. It may be applied during material screening, incoming inspection, laboratory testing, or project qualification of rock sources. ASTM D8281/D8281M is especially useful when buyers, specifiers, or testing labs need a practical method to evaluate rock before it is approved for placement in erosion control systems.
Why ASTM D8281/D8281M matters
ASTM D8281/D8281M matters because it helps reduce risk in material selection and supports more consistent quality control. If rock contains expanding clays, performance in erosion control applications may be affected, so a standard test method can improve confidence in procurement and compliance decisions. Using ASTM D8281/D8281M also helps align testing practices across projects and organizations, making results easier to compare and document.
- Ethylene glycol-based test method
- Expanding clay identification
- Rock evaluation for erosion control
- Consistent laboratory assessment
- Material screening and acceptance support
- Publication Date: 2021-05-14
- Publisher: ASTM
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