ASTM D6032/D6032M
Standard Test Method for Determining Rock Quality Designation (RQD) of Rock Core
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About This Item
ASTM D6032/D6032M is the Standard Test Method for Determining Rock Quality Designation (RQD) of Rock Core, providing a recognized way to evaluate core quality from rock samples. This standard is used to support more consistent assessment of rock mass conditions by focusing on the recovered core and how it is measured for RQD. For geotechnical and engineering applications, that consistency can help improve interpretation, comparison, and documentation of subsurface conditions.
Purpose of ASTM D6032/D6032M
The purpose of ASTM D6032/D6032M is to define a standard test method for determining Rock Quality Designation from rock core. RQD is a common index used in rock engineering to describe the quality of core recovery in terms of intact lengths. By following a standardized method, users can reduce variation in reporting and support more dependable comparisons across projects, boreholes, and field investigations. The standard helps make core-based assessments more uniform and technically defensible.
Common use cases of ASTM D6032/D6032M
This standard is commonly used in geotechnical site investigations, rock core logging, and engineering evaluations where rock mass quality needs to be documented. It is relevant when core samples are collected for design studies, subsurface characterization, or project records that depend on consistent rock core assessment. ASTM D6032/D6032M is also useful in workflows where RQD values are compared across drill holes or used alongside other core description practices to support planning and review.
Why ASTM D6032/D6032M matters
ASTM D6032/D6032M matters because a consistent method for determining RQD helps improve reliability in rock core evaluation. Standardized testing supports better communication between drilling, laboratory, and engineering teams, while also helping with quality control and project documentation. For owners, consultants, and contractors, using ASTM D6032/D6032M may reduce ambiguity when comparing results or checking compliance with project requirements. It also supports more informed decisions when rock conditions influence design or construction risk.
- Rock core quality designation
- Standardized test method
- Core logging and comparison
- Geotechnical evaluation support
- Consistent project documentation
- Publication Date: 2017-04-21
- Publisher: ASTM
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