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By adding gypsum to cement...

By adding gypsum to cement

A

Decrease the rate of setting of cement

B

Bind the particles of calcium silicate

C

Facilitate the formation of colloidal gel

D

All the above

Text Solution

Verified by Experts

The correct Answer is:
A
Gypsum is added to decrease the rate of setting of cement and it converts fast setting tricalcium aluminate to calcium suphoaluminate which set slowly.
`3CaO.Al_2O_3+3CaSO_4+3H_2Oto`
`3CaO.Al_2O_3.3CaSO_4.3H_2O`
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