R

Ranjeet • 34.60K Points
Instructor I 

Q. The concrete mix of grade M 25 means that the compressive strength of 15 cm cubes at 28 days after mixing is ?

(A) 15 N/mm²
(B) 20 N/mm²
(C) 25 N/mm²
(D) 30 N/mm²
Correct : Option (C)

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