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The ASTM C403/403M standard, titled "Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance," provides guidelines and procedures for determining the time of setting of concrete mixtures using the penetration resistance method. This test is important for assessing the setting characteristics and hardening time of concrete.
ASTM C403/403M outlines the testing method using a penetration resistance device, such as a Vicat apparatus or a penetration resistance probe, to measure the resistance of the concrete mixture to penetration. The initial and final setting times are determined based on specific penetration resistance values.
Products associated with ASTM C403/403M include concrete mixtures, a penetration resistance device, and a timer or stopwatch for time measurement.
By adhering to the ASTM C403/403M standard and utilizing associated products, engineers, researchers, and testing laboratories can accurately determine the time of setting of concrete mixtures. This information aids in proper control of concrete placement and curing, ensuring the desired strength development and performance of concrete structures.