About $2.5 %$ gypsum $(C a S O_{4} . H_{2} O)$ is also added to cement as one of the consituents its function is to:

Slow down the setting process to increase strength

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Speed the setting process to increase strength

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Absord moisture

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Make it anti-rusting

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Solution

The correct option is A Slow down the setting process to increase strength
Gypsum is a mineral and is hydrated calcium sulphate in chemical form. Gypsum plays a very important role in controlling the rate of hardening of the cement. During the cement manufacturing process, upon the cooling of clinker, a small amount of gypsum is introduced during the final grinding process.Gypsum is added to control the “setting of cement”. If not added, the cement will set immediately after mixing of water leaving no time for concrete placing.
conclusion: hence the option (A) is correct

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Similar questions

Q. Assertion :Gypsum is added to powdered clinkers to get cement. Reason: Addition of gypsum to clinker decreases its setting time and thus cement hardens readily on mixing with water.

By adding gypsum to cement
(a) setting time of cement becomes less
(b) setting time of cement increases
(c) colour of cement becomes light
(d) shining surface is obtained

Q. To increase the initial setting time of cement, the compound responsible is _______.

Why gypsum is added in the manufacturing process of cement?

Q. To prevent flash setting of cement, which of the following is added to cement?

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About 2.5% gypsum (CaSO4.H2O) is also added to cement as one of the consituents its function is to:

About $2.5 %$ gypsum $(C a S O_{4} . H_{2} O)$ is also added to cement as one of the consituents its function is to: