ASTM C31/C31M-00e1 - 10.8.2000
 
1. Scope

1.1 This practice covers procedures for making and curing cylindrical and prismatic beam specimens from representative samples of fresh concrete for a construction project.

1.2 The concrete used to make the molded specimens shall be sampled after all on-site adjustments have been made to the mixture proportions, including the addition of mix water and admixtures. This practice is not satisfactory for making specimens from concrete not having a measurable slump or requiring other sizes and shapes of specimens.

1.3 The values stated in either inch-pound units or SI units shall be regarded separately as standard. The SI units are shown in brackets. The values stated may not be exact equivalents; therefore each system must be used independently of the other. Combining values from the two units may result in nonconformance.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.5 The text of this standard references notes which provide explanatory material. These notes shall not be considered as requirements of the standard.

 
2. Referenced Documents

C231/C231M-26

Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

C330/C330M-23

Standard Specification for Lightweight Aggregates for Structural Concrete

C1077-26a

Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation (Includes all amendments and changes 8/17/2026).

C403/C403M-23

Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance

C511-21

Standard Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes

C617/C617M-23

Standard Practice for Capping Cylindrical Concrete Specimens

C1064/C1064M-23

Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement Concrete

C470/C470M-23

Standard Specification for Molds for Forming Concrete Test Cylinders Vertically

309R

Guide for Consolidation of Concrete

C125-26

Standard Terminology Relating to Concrete and Concrete Aggregates

C138/C138M-24a

Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete (Includes all amendments and changes 8/6/2024).

C143/C143M-26b

Standard Test Method for Slump of Concrete (Includes all amendments and changes 8/6/2026).

C172/C172M-25

Standard Practice for Sampling Freshly Mixed Concrete

C173/C173M-26

Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method