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Building Materials

Q1:

Ultimate strength to cement is provided by

A Tricalcium silicate

B Di-calcium silicate

C Tri-calcium aluminate

D Tetra calcium alumino ferrite.

ANS:B - Di-calcium silicate

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%.



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