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Q: What does the final setting time of cement signify?
  • A. Maximum Strength
  • B. Start of Cement Hardening
  • C. End of Cement Hardening
  • D. Optimum Water Content
Correct Answer: Option C - The initial setting time denotes the end of workability of the paste after wetting and the final setting time indicates the hardening of the set mass. The final setting time of cement is defined as the time taken from the moment when water is added to cement to the moment, the collar arrangement fails to make impression on the surface of cement paste.
C. The initial setting time denotes the end of workability of the paste after wetting and the final setting time indicates the hardening of the set mass. The final setting time of cement is defined as the time taken from the moment when water is added to cement to the moment, the collar arrangement fails to make impression on the surface of cement paste.

Explanations:

The initial setting time denotes the end of workability of the paste after wetting and the final setting time indicates the hardening of the set mass. The final setting time of cement is defined as the time taken from the moment when water is added to cement to the moment, the collar arrangement fails to make impression on the surface of cement paste.