1.

Initial setting time of OPC should not be less than ___________(a) 15 minutes(b) 30 minutes(c) 28 minutes(d) 1 hourI 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

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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