Sampling by ASTM C172/C172M is aimed at determining compliance with what?

Sampling by ASTM C172/C172M is aimed at ensuring the quality requirements of the specifications are met. This standard provides guidelines for obtaining representative samples of fresh concrete, which is crucial for quality control and compliance verification throughout the construction process. The primary goal is to ensure that the material used adheres to the standards specified in project specifications, including the right mix attributes and performance criteria.

The significance of sampling in this context lies in the fact that the physical properties of concrete at the time of casting can significantly impact the overall durability and performance of the resulting structure. Therefore, by adhering to the guidelines set forth in the standard, individuals can reliably assess whether the concrete produced is in alignment with the predetermined quality requirements.

The other answer choices point to important factors in construction and material quality, but they do not encapsulate the core purpose of the ASTM C172/C172M standard, which is primarily focused on verifying that the concrete meets all specified quality criteria through proper sampling practices.