Q. I.S.I. has specified the full strength of concrete after

(A) 7 days
(B) 14 days
(C) 21 days
(D) 28 days

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✅ Correct Answer: (D) 28 days

Published by Manisha Agrawal ⭐ 9.34K Points at 11-Sep-2023 07:17 am in Concrete Technology

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