Ultimate strength of cement is provided by

A.

Tricalcium silicate

B.

Di-calcium silicate

C.

Tri-calcium aluminate

D.

Tetra calcium alumino ferrite

Correct answer is B

Dicalcium Silicate (C2S): This compound will undergo reaction slowly. It is responsible for the ultimate strength of concrete. This is also called as Belite. The heat of hydration is 260 J/Cal. Its proportion is 25 - 40%.