ASTM C39
Full Name
ASTM C39 – Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
Scope
ASTM C39 covers the determination of the compressive strength of cylindrical concrete specimens. These specimens can be either molded cylinders (prepared in a lab or field) or drilled cores (taken from existing concrete structures).
The scope of ASTM C39 includes:
- Materials tested: cylindrical concrete specimens, including both molded cylinders and drilled cores.
- Procedure: applying a compressive axial load to the specimen at a controlled rate until failure occurs.
- Calculations: determining the compressive strength by dividing the maximum load achieved during the test by the cross-sectional area of the specimen.
The results from ASTM C39 are used for:
- Quality control of concrete production, mixing, and placement.
- Evaluating the effectiveness of admixtures.
- Compliance with specifications.
- Assessing the existing strength of concrete in structures.
It is important to note that ASTM C39 focuses on the test method itself. The preparation of specimens, including molding cylinders and drilling cores, is covered in other ASTM standards (e.g., ASTM C31, ASTM C42).
ASTM C39 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C39 standard.
Contact us for more information.
Resources
Keywords
compressive strength; concrete; cylindrical specimens; test method; specimen preparation; loading rate; failure; calculation; results