Question

The compressive strength requirements of 53 grade O.P.C cement as per IS 12269 at 3, 7 and 28 days in N/mm${}^2$ are

• A. 33, 43, 53
• B. 27, 37, 53
• C. 33, 47, 53
• D. 27, 45, 53

Answer 1

The correct option is B 27, 37, 53

3 day 26.5 N/mm${}^2$
7 day - 35.33 N/mm${}^2$
28 days - 53 N/mm${}^2$