Which one of the following statements is not correct regarding the setting of cement?
The addition of a small percentage of gypsum (CaSO<sub>4</sub>) 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.
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CAPF – 2023