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Question
Finely-divided Pozzolana reacts with lime producing:
A.
Tricalcium
B.
Silicate
C.
Dicalcium silicate
D.
Calcium silicate
Answer ( Option D)

Calcium silicate

Solution

The silica in the pozzolana reacts with the lime produced during the hydration of cement and contributes to the development of strength slowly and gradually additional calcium silicate is formed, which is a binder and fills up the space. This gives impermeable, durable cement with high final strength.

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