ASTM RR:C09-1052 PDF Download

ASTM RR:C09-1052 is a standard test method titled "Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance." The purpose of this test method is to determine the time of setting of concrete mixtures by measuring the penetration resistance of the concrete using a penetration resistance test apparatus. This standard provides guidelines on how to perform the test, the equipment required, and the calculation method for determining the time of setting.

The standard has undergone an interlaboratory study, known as Interlaboratory Study 29, which was conducted to establish a precision statement for the test method. This study aimed to determine the precision and repeatability of the results obtained from different laboratories using the same test method. The results of this study provide information on the variation in test results that can be expected when the test is conducted by different operators or in different laboratories.