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What is the role of gypsum, $CaSO_4\cdot2H_2O$ in setting of cement? Identify the correct option from the following:
A
to slow down the setting process
B
to fasten the setting process
C
to provide water molecules for hydration process
D
to help to remove water molecules
Detailed Solution
Gypsum is added to cement clinker to slow down (retard) the setting process of cement, preventing it from setting too quickly and allowing time for it to be used effectively.