The range of lime (CaO) is within ______ in Portland cement.
A. 30 – 35%
B. 35 – 55%
C. 60 – 67%
D. 70 – 75%
Answer:C
The range of lime (CaO) is within ______ in Portland cement.
A. 30 – 35% B. 35 – 55% C. 60 – 67% D. 70 – 75%