ACI Concrete Field Testing Technician - Grade I Practice Exam

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Prepare for the ACI Concrete Field Testing Technician - Grade I Exam with interactive quizzes and detailed study materials. Each question is designed to enhance your understanding of concrete testing standards and procedures.

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Which ASTM standard must air meter bowls conform to?

ASTM C295
ASTM C31
ASTM C231
ASTM C149

The correct answer is: ASTM C231

Air meter bowls must conform to ASTM C231, which specifically outlines the requirements for test methods to determine the air content of freshly mixed concrete using the pressure method. This standard ensures that the air meter bowls are designed to reliably measure the air content in concrete mixtures, which is crucial for understanding the concrete's properties and performance. The standard encompasses aspects such as the dimensions of the bowl, the materials used for construction, and the necessary markings and tolerances, ensuring consistency and accuracy in testing. By adhering to the specifications of ASTM C231, the integrity of the air content measurement is maintained, allowing for reliable quality control in concrete production.