Measures other than air meter bowls used for this test must conform to which ASTM standard?

The appropriate standard for measures other than air meter bowls used for this test is ASTM C231. This standard specifically pertains to the determination of the air content of freshly mixed concrete by the pressure method. It outlines the technical specifications and procedures that ensure accuracy and reliability when measuring the air content in concrete samples.

While it is common for tests to reference multiple ASTM standards, ASTM C231 is the relevant one in this context because it addresses the requirements for air content measurement methods in concrete. Other standards may deal with aspects of concrete testing or properties but do not specifically pertain to the alternative measures for testing air content as outlined in ASTM C231.

Thus, the focus on this standard reinforces adherence to established testing protocols, ensuring that any measures used align with standardized practices.