The proportion of lime, silica, alumina and iron oxide in a good Portland cement should be ?

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Ravi Shankar

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📊 Concrete Technology

Q. The proportion of lime, silica, alumina and iron oxide in a good Portland cement should be ?

(A) 63:22: 6:3
(B) 63:22:3:6
(C) 22:63:6:3
(D) 22:63:3:6

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✅ Correct Answer: (A) 63:22: 6:3

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