ACI Concrete Field Testing Technician - Grade I Practice Exam

What does the ASTM C29 standard refer to?

1. Techniques for concrete testing

2. Aggregates testing and sampling

3. Density of concrete aggregates

4. Concrete permeability testing

The correct answer is: Aggregates testing and sampling

The ASTM C29 standard is specifically focused on the testing and sampling of aggregates. This standard provides the necessary guidelines and procedures used to determine the bulk density, apparent density, and specific gravity of aggregates for concrete. Understanding this standard is essential as it helps ensure that the aggregates used in concrete mix designs meet specified performance requirements, including strength and durability. It plays a critical role in controlling the quality of materials, which directly impacts the overall performance of the concrete. The other topics mentioned pertain to different standards: techniques for concrete testing involves broader methodologies and standards, while concrete permeability testing pertains to the ability of concrete to allow fluids to pass through it, which is addressed in different ASTM standards.