ASTM C172/C172M-17 PDF Download

ASTM C172/C172M-17 is a standard practice that outlines the procedures for sampling freshly mixed concrete in various containers used during production or transportation. The purpose of this practice is to ensure that the concrete samples obtained are representative of the quality requirements specified for the project.

The standard covers sampling from different types of equipment, such as stationary, paving, and truck mixers, as well as agitating and nonagitating equipment used for central-mixed and continuous mixing concrete. Composite samples are generally required, unless specific tests exempt them, such as tests for consistency uniformity and mixer efficiency. The practice recommends the use of random sampling to ensure overall specification compliance.

In addition to sampling, the standard also includes procedures for preparing concrete samples for further testing, particularly when it is necessary to remove larger aggregate particles. Wet-sieving is the preferred method for removing these particles.

It is important to note that the standard contains referenced notes and footnotes that provide additional explanations but are not considered as requirements of the practice. These notes and footnotes provide clarity and guidance for the implementation of the standard.