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M20 Concrete Compressive Strength

In the grade of concretes like M10 M20 M30 etc. M stands for Mix of the ratio of cementsand aggregate and 102030 Stands for Compressive Strength. Concrete less than M20 grade should not be used in the RCC work as per code IS 4562000. PQC stands for Pavement Quality Concrete. Normal grade of concrete. a. M5 Grade

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