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Q: Which of the following types of cement gives 1-day strength that is equal to the 3-day strength of OPC with the same water content?
  • A. Rapid hardening Portland cement
  • B. Portland pozzolana cement
  • C. Ordinary Portland cement
  • D. Portland slag cement
Correct Answer: Option A - Rapid hardening portland cement (IS: 8041 - 1990) • It is finer than ordinary portland cement • It contains more and less than OPC. • The 1 day strength of this cement is equal to the 3 days strength of OPC with the same water cement ratio. • Rapid hardening cement is also used for road work where it is imperative to open the road traffic with minimum delay.
A. Rapid hardening portland cement (IS: 8041 - 1990) • It is finer than ordinary portland cement • It contains more and less than OPC. • The 1 day strength of this cement is equal to the 3 days strength of OPC with the same water cement ratio. • Rapid hardening cement is also used for road work where it is imperative to open the road traffic with minimum delay.

Explanations:

Rapid hardening portland cement (IS: 8041 - 1990) • It is finer than ordinary portland cement • It contains more and less than OPC. • The 1 day strength of this cement is equal to the 3 days strength of OPC with the same water cement ratio. • Rapid hardening cement is also used for road work where it is imperative to open the road traffic with minimum delay.