Question

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

• A. high quality portland cement with minimum additives
• 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

Answer 1

The correct option is B high alumina cement with calcium chloride additives

Calcium chloride is a rapid hardening agent. The acceleration of setting, hardening and evolution of this large quantity of heat in the early period of hydration makes the cement suitable for concreting in cold weather. The increased porosity of high alumina cement further develops more resistance to frosting.