Grade of concrete is defined as the concrete mix proportion, and the minimum compressive strength of concrete, at the end of the 28-day curing period.
The compressive strength of the concrete is the maximum amount of strength, a concrete develops after 28 days to resist the crushing force or axial force on it before reaching its failure point.
Test for compressive strength is carried out either on a cube or cylinder. Various standard coderecommendsenda concrete cylinder or concrete cube, as the standard specimen for the test.
The M standard signifies the cube sample size of concrete, while the C standard signifies the cylindrical sample size of concrete. The C standard can also be used as a cube and cylindrical sample size.
The mix ratio of concrete is the proportion by volume of cement, sand, and coarse aggregate, that is needed to produce a concrete grade in the presence of adequate water.
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13 апр 2023
