Discussion :: Building Materials
- For the manufacture of Portland cement, the proportions of raw materials used, are
A.
Lime 63% ; silica 22% ; other ingredients 15% |
B.
Lime 22% ; silica 63% ; other ingredients 15% |
C.
Silica 40% ; lime 40% ; other ingredients 20% |
D.
Silica 70% ; lime 20% ; other ingredients 10% |
Answer : Option A
Explanation :
Explanation Not Provided
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