What is ASTM C31/C31M used for?

ASTM C31/C31M provides standardized procedures for making and curing concrete test specimens in the field. This standard outlines the methods for preparing and maintaining concrete samples that will be tested for their strength and other properties. The specification ensures that the samples are representative of the concrete used in construction and provides guidelines on aspects like the materials, equipment, and procedures required to obtain reliable results. Following this standard is crucial for maintaining quality control and ensuring that the concrete meets specified performance criteria.

Making and curing test specimens appropriately is essential because it impacts the accuracy of the test results, such as compressive strength, which is vital for meeting structural requirements. This standard is specifically focused on the initial forming and curing processes, which are critical steps before any strength testing can occur.