Discussion
Rapid Hardening Portland Cement (RHPC) confirms to which IS code:
Answer: B
Rapid Hardening Portland Cement conforms to IS 8041: 1990.
IS 8041 covers rapid hardening Portland cement, which is ground finer and has more tricalcium silicate than OPC, so it gains early strength quickly, roughly its 7-day OPC strength in 3 days. It is used where formwork must be removed early or for repair work.
IS 455 is Portland slag cement, IS 12600 is low heat Portland cement, and IS 12330 is sulphate resisting Portland cement.
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