ASTM C39/C39M-04 - 1.8.2004
 
1. Scope

1.1 This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a unit weight in excess of 50 lb/ft3 [800 kg/m3].

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

1.3 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.

1.4 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

C192/C192M-26b

Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory (Includes all amendments and changes 10/13/2026).

E74-18(2026)

Standard Practices for Calibration and Verification for Force-Measuring Instruments

E4-24

Standard Practices for Force Calibration and Verification of Testing Machines

C1435/C1435M-20

Standard Practice for Molding Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Hammer

C42/C42M-20

Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete

C1231/C1231M-23

Standard Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Cylindrical Concrete Specimens

C873/C873M-23

Standard Test Method for Compressive Strength of Concrete Cylinders Cast in Place in Cylindrical Molds

C31/C31M-26b

Standard Practice for Making and Curing Concrete Test Specimens in the Field (Includes all amendments and changes 8/27/2026).

Manual

of Aggregate and Concrete Testing

C1176/C1176M-20

Standard Practice for Making Roller-Compacted Concrete in Cylinder Molds Using a Vibrating Table

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).

C617/C617M-23

Standard Practice for Capping Cylindrical Concrete Specimens

C670-24ae1

Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials (Includes all amendments and changes 2/21/2025).