Compressive strength of 1: 1 1/2 : 3 mix concrete after 28 days

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Compressive strength of 1: 1 1/2 : 3 mix concrete after 28 days

A10 N/mm²

B15 N/mm²

C20 N/mm²

D25 N/mm²

Answer:

C. 20 N/mm²

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