What function does iron oxide perform in cement?
A. Increases strength
B. Makes cement sound
C. Increases setting time
D. Acts as flux
Answer:D
What function does iron oxide perform in cement?
A. Increases strength B. Makes cement sound C. Increases setting time D. Acts as flux
Explanation: Iron oxide acts as flux, in addition to being responsible for imparting colour to cement. If temperature goes higher, then iron oxide reacts with aluminium and calcium and results in formation of calcium aluminate ferrite.