Cylindrical specimens are tested in accordance with ASTM C 39, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.
For estimating the in-place concrete strength, ASTM C 31 provides procedures forfield-curedspecimens. • Acceptance testing and criteria given in Clause 10.3.4.2 • Clause 10.3.4.2 • 2 cubes shall be made in accordance to CS1 • Test result = average compressive strength of the pair of cubes • Disregard test result when difference > 20% of test result • Calculation of standard deviation • … The compressive strength of concrete is defined as the maximum crushing stress can withstand by the concrete. Define the compressive strength of the concrete. By this single test one judge that whether Concreting has been done properly or not.


Why Compressive Strength Test of Concrete is Important? We listed out the common doubt happening in concrete cube test. You may aware of concrete cube test, but you may have some question like why this test conducting or any other question. Concrete Test Specimens in the Field. The American Society for Material Test ASTM C39 / C39M provides a standard test method for the compressive strength of cylindrical concrete samples. Concrete being the major consumable material after water makes it quite inquisitive in its nature. A test result is the average of at least two standard-cured “ The compressive strength of concrete is given in terms of the characteristic compressive strength of 150 mm size cubes tested at 28 days (fck).

Compressive strength is the ability of a material or structure to carry loads on its surface without any breakage or deviation. This is an in-depth article on Compressive Strength of Concrete. The characteristic strength is defined as the strength of the concrete below which not more than 5% of the test results are expected to fall.” HOW to Test the Strength of Concrete Cylindrical specimens for acceptance testing should be 6 x 12 inch (150 x 300 mm) size or 4 x 8 inch (100 x 200 mm) when specified. The strength of concrete is majorly derived from aggregates, where-as cement and sand contribute binding and workability along with flowability to concrete.. Historical strength test records are used by the concrete producer to establish the target average strength of concrete mixtures for future work.

The compressive strength of the concrete cube test provides an idea about all the characteristics of concrete.