ASTM C947

ASTM C947 is the ASTM standard for determining the flexural properties of thin-section glass-fiber-reinforced concrete using simple beam with third-point loading. It provides a consistent test approach for evaluating how these thin composite elements respond under bending, helping manufacturers, specifiers, and quality teams compare performance in a controlled way. As a technical document, it supports more reliable product assessment, quality control, and compliance-related testing.

Purpose of ASTM C947

The purpose of ASTM C947 is to define a repeatable method for measuring flexural behavior in thin-section glass-fiber-reinforced concrete specimens. By using simple beam third-point loading, the standard helps create comparable results for bending strength-related properties. This is important when evaluating material performance, verifying manufacturing consistency, or supporting specification requirements. ASTM C947 is commonly used as a practical reference for testing procedures rather than as a product specification itself.

Common use cases of ASTM C947

This standard is commonly used when testing thin-section glass-fiber-reinforced concrete products that need bending performance data for evaluation or quality control. It may be applied in laboratory testing programs, product qualification work, and incoming or outgoing inspection workflows. ASTM C947 is also useful when comparing batches, confirming manufacturing consistency, or documenting results for technical submittals and procurement review. Its simple beam third-point loading setup makes it relevant to controlled flexural testing environments.

Why ASTM C947 matters

ASTM C947 matters because flexural test data can be critical when assessing whether thin-section glass-fiber-reinforced concrete meets project or product expectations. A standardized method improves consistency across test results, which supports clearer communication between producers, purchasers, and testing laboratories. It can also reduce uncertainty during product evaluation and help limit risk tied to uneven testing practices. For organizations that rely on repeatable mechanical property data, ASTM C947 is a practical quality and compliance tool.

• Flexural properties testing
• Thin-section glass-fiber-reinforced concrete
• Simple beam with third-point loading
• Product evaluation and quality control
• Repeatable laboratory test method