If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of t…

Final setting time of cement should not be more than ___

Which chemical compostion has highest content in OPC?

C3 S and C2S require approximately the _________ amount of water for hydration.

Standard consistency of cement is tested by _______

In cement hardening process _______ instants are very important.

Gypsum reacts with ________ to form calcium sulfo aluminates and calcium sulfo ferrite.

Which cement is used in sewage and water treatment plants?