ASTM C39

 Compressive Strength Test of Cylindrical Concrete Specimen

ASTM C39 deals with the measurement of compressive strength of cylindrical concrete specimens such as molded cylinders and perforated cores. 

This standard controls the quality of concrete proportions and mixtures used in road pavement, bridges, and other concrete structures for various purposes.

[Test Sample]

Cylinder shaped concrete block

   Sample Example

[Sample Preperation]

Concrete samples and molds are hardened into cylinders at inervals of 24 hours to 90 days. 

You can also drill through cores used to test the strength of newly finished concrete structures or structures showing signs of distress. 

ASTM C39 specifies that sample measurements are taken at three locations and the data is calculated and recorded. 

Specimens should be carefully set to align properly with the load axis. 

A specimen break occurs in shear mode between center notches.

 [Recommended models]

ST-1004C

Salt Co., LTD.’s Hydraulic Compression Machine

  Salt Co., LTD.’s universal material tester provides a variety of grips, elongation meters and test solutions to meet the requirements of physical properties testing of various materials.