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Q: The minimum and maximum setting time of Ordinary Portland Cement (OPC) is-
  • A. 30 and 600 minutes respectively
  • B. 30 and 60 minutes respectively
  • C. 300 and 600 minutes respectively
  • D. 300 and 60 minutes respectively
Correct Answer: Option A - Types of ordinary portland cement– (i) OPC - 33(IS : 269-2015) (ii) OPC - 43 (IS : 8112-1989) (iii) OPC - 53 (IS : 12269-1987) • Initial setting time (1st) of OPC is 30 min and final setting time of OPC is 600 min.
A. Types of ordinary portland cement– (i) OPC - 33(IS : 269-2015) (ii) OPC - 43 (IS : 8112-1989) (iii) OPC - 53 (IS : 12269-1987) • Initial setting time (1st) of OPC is 30 min and final setting time of OPC is 600 min.

Explanations:

Types of ordinary portland cement– (i) OPC - 33(IS : 269-2015) (ii) OPC - 43 (IS : 8112-1989) (iii) OPC - 53 (IS : 12269-1987) • Initial setting time (1st) of OPC is 30 min and final setting time of OPC is 600 min.