Which standard is commonly used for performing the slump test?

The standard commonly used for performing the slump test is ASTM C143. This standard provides the necessary procedures and requirements for determining the workability and flow characteristics of fresh concrete by measuring the slump.

The slump test itself involves filling a conical mold with concrete, lifting the mold, and measuring how much the concrete settles or slumps. This measured slump value is indicative of the consistency of the concrete mix—a key characteristic that affects how easily concrete can be placed and formed.

Standards such as ASTM C150, ASTM C231, and ASTM C1602 pertain to different aspects of concrete testing. ASTM C150 covers the specifications for Portland cement, ASTM C231 discusses the test method for air content in unhardened concrete, and ASTM C1602 deals with the requirement for mixing water quality in concrete. These standards do not address the slump test procedure directly, thus reinforcing why ASTM C143 is the correct answer when it comes to slump testing specifically.