Four main oxides present in ordinary portland cement are : CaO, Al2O3, – InterviewSolution

1.	Four main oxides present in ordinary portland cement are : CaO, Al2O3, SiO2 and Fe2O3. Identify the correct ascending order of their proportions in a typical composition of OPC.
Answer» Four main oxides present in ordinary portland cement are : CaO, $A l_{2} O_{3}$ , $S i O_{2}$ and $F e_{2} O_{3}$ . Identify the correct ascending order of their proportions in a typical composition of OPC.

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