Concrete Compressive Strength

ASTM C39/C39M – Compressive Strength Test of Cylindrical Specimens – A Quick Guide

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Types of fracture patterns of cylindrical specimen as per ASTM C39

The compressive strength test is one of the most important quality-control tests for concrete. ASTM C39/C39M covers the determination of compressive strength of molded concrete cylinders and drilled cores having a density greater than 800 kg/m³. The test involves applying a continuously increasing axial compressive load until failure and calculating the strength from the maximum … Read more

Compressive Strength Test of Concrete (ASTM C39 & IS 516)

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Compressive strength test of concrete ASTM C39 vs IS 516

On almost every construction project, thousands of concrete cubes or cylinders are cast and tested. Yet obtaining an accurate result involves much more than simply placing a specimen in a compression testing machine. Factors such as specimen preparation, curing conditions, machine calibration, loading rate, and even the exact age of the specimen can significantly influence … Read more