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Initial setting time of OPC should not be less than ___________

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Initial setting time of OPC should not be less than ___________

(a) 15 minutes

(b) 30 minutes

(c) 28 minutes

(d) 1 hour

I got this question during a job interview.

The doubt is from Setting Time Test in chapter Types of Cement and Testing of Cement of Concrete Technology

1 Answer

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Best answer
The correct option is (b) 30 minutes

The best explanation: As per IS specification, the minimum initial setting time is 30 minutes for ordinary portland cement.

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