SSC JE Civil Engineering 2012 Solved Paper

Question : 141 of 200

Marks: +1, -0

Out of the constituents of cement namely,tricalcium silicate

(C_2S)

, dicalcium silicate

(C_2S)

, tri calcium aluminate

(C_3A)

and tertracalcium alumino ferrite

(C_4AF)

the first to set and harden is

Solution:

Tricalcium aluminate

(C_3A)

properties are-
● 5-11% of cement.
● It rapidly react with water.
● Generate high heat of hydration.
● Responsible for flash set.

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