Which one of the following statements is not correct regarding the setting of cement ........

Everyday Science Chemistry

Which one of the following statements is not correct regarding the setting of cement ?

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CAPF 2023 Paper-1

The addition of a small percentage of gypsum (CaSO4) lengthens the setting period of cement.

According to the colloidal theory, gels of hydrated silicates are formed and when these gels harden, the set cement loses strength .

Tricalcium silicate is responsible for initial setting of cement.

Dicalcium silicate and tricalcium silicate are responsible for the final strength which occurs in about a year.

Tricalcium silicate is responsible for initial setting of cement.

Tricalcium Aluminate (C3A)(not tricalcium silicate) .
It is responsible for the initial setting time, high heat of hydration and has greater tendency to volume changing causing cracking.

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