Answer :
Final answer:
The sample of concrete used for testing should be obtained in accordance with ASTM C172/C172M standard. This standard entails procedures for obtaining a truly representative sample of the entire volume of the concrete mixture. Adherence to this standard ensures the integrity of the sample and accurate test results.
Explanation:
The sample of concrete used for testing should be obtained in accordance with the ASTM C172/C172M standard practice. This standard concerns the sampling of fresh concrete and involves procedures to ensure a truly representative sample of the entire volume of the concrete mixture.
Methods include composite sampling, longitudinal sampling, and incremental sampling, all adhering to the ultimate goal of ensuring the integrity of the sample in order to obtain accurate test results.
Learn more about ASTM C172/C172M here:
https://brainly.com/question/33805221
#SPJ11