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Q: Rapid setting cement contains relatively higher proportion of:
  • A. C₃S
  • B. C₂S
  • C. C₃A
  • D. C₄AF
Correct Answer: Option C - C₃A is quick setting in nature. It reduces setting time of cement. • In rapid setting cement, quantity of gypsum is reduces.
C. C₃A is quick setting in nature. It reduces setting time of cement. • In rapid setting cement, quantity of gypsum is reduces.

Explanations:

C₃A is quick setting in nature. It reduces setting time of cement. • In rapid setting cement, quantity of gypsum is reduces.