ASTM InternationalASTM C138Test Method for Density (Unit Weight), Yield, and Air Content of Concrete.Referenced across 5 Anvilfield field guides. Field guides that apply ASTM C138ConcreteConcreteConcrete slump testConcreteLightweight concreteConcreteMix design and water-cement ratioDatacenterDatacenterData center structural QADatacenterStrength cylinders and acceptance Often cited alongsideACI 318ASTM C39ACI 301ASTM C143ASTM C31ASTM C172ASTM C231ASTM C1064 Browse all codes and standards