What effect does calcium sulphatehave on cement?
A. Retards setting action
B. Acts as flux
C. Imparts colour
D. Reduces strength
Answer:A
What effect does calcium sulphatehave on cement?
A. Retards setting action B. Acts as flux C. Imparts colour D. Reduces strength
Explanation: Calcium sulphateis found in cement in the form of gypsum. Its slows down the setting time of cement.