Excess of Alkali in cements results in:
A. Dry cement paste
B. Efflorescence
C. Less plasticity
D. Unsound cement
Answer:B
Excess of Alkali in cements results in:
A. Dry cement paste B. Efflorescence C. Less plasticity D. Unsound cement
Explanation: Efflorescence is the formation of powdery substance on the surface of masonry or concrete work. Alkalis usually get carried away by flue gases during heating. In excess quantity, they result in alkali-aggregate reaction.