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UPSC Civil Service Exam Questions - Engineering

Q1:

While concreting in cold weather where frosting is also likely, one uses

A high quality portland cement with minimum volumes of added water

B high alumina cement with calcium chloride additives

C portland cement together with calcium chloride additives

D a mixture of high alumina cement and portland cement.

ANS:C - portland cement together with calcium chloride additives

IS code says cacl2 shall not be used with high alumina cement.

So, B is the correct answer.