ASTM RR:C09-1032 PDF Download

The ASTM RR:C09-1032 standard is a method used for determining the time of setting of concrete mixtures. This standard requires conducting an interlaboratory study involving five operators and three concrete mixtures to establish precision values for the ASTM test method C403/C403M.

The purpose of this standard is to provide a precise and reliable method for determining the time of setting of concrete mixtures. The test method involves measuring the penetration resistance of a concrete sample at regular intervals to determine the point at which the concrete has reached initial and final sets. The time of setting is important in construction applications as it determines the time when the concrete can be finished, cured, or loaded.

By conducting an interlaboratory study, this standard ensures that the test method's precision is established across different operators and concrete mixtures. This study helps measure the variability and repeatability of the test results, providing insight into the accuracy and consistency of the time of setting measurements obtained using this method.