- Building Materials - Section 1
- Building Materials - Section 2
- Building Materials - Section 3
- Building Materials - Section 4
- Building Materials - Section 5
- Building Materials - Section 6
- Building Materials - Section 7
- Building Materials - Section 8


Building Materials - Engineering
Q1: The compound of Portland cement which reacts immediately with water and also sets first isA
Tri-calcium silicate
B
Di-calcium silicate
C
Tri-calcium aluminate
D
Tetra calcium alumino ferrite.
ANS:C - Tri-calcium aluminate Answer is correct as we add gypsum in cement to slow down the reaction of c3A if gypsum is not added then cement would flash set in 5-10 mins.
Tricalcium aluminate (C3A) is mostly related to the heat of hydration. |


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