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How Calculate Grade Of Cement Concrete Cube While Testing Crushing Strenght

Concrete mixes are classified by its grade having specified crushing strength at 28 days as measured in standard conditions with 150 mm 215 150 mm 215 150 mm size cube that means the grade of concrete corresponds to its characteristic compressive strength M20 shows the crushing strength of that cube having size 150 mm at 28 days is 20 Nmm2.

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