Q: What is the minimum per-hardening period at 10⁰C for M20 Grade of concrete made with OPC? OPC से बने M20 ग्रेड के कंक्रीट के लिए 10⁰C पर न्यूनतम पूर्व-सख्त होने की अवधि क्या है?
A.
38 hours/38 घंटे
B.
42 hours/42 घंटे
C.
33 hours/33 घंटे
D.
46 hours/46 घंटे
Correct Answer:
Option D -
Explanations:
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