For a good quality cement the ratio of silica to alumina should be in the range of

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Aicharya · Accepted Answer

For a good quality cement :- Silica $\left(\mathrm{SiO}_2\right)$ : Alumina $\left(\mathrm{Al}_2 \mathrm{O}_3\right)=2.5-4.0$ Lime $(\mathrm{CaO}): \mathrm{SiO}_2+\mathrm{Al}_2 \mathrm{O}_3+\mathrm{Fe}_2 \mathrm{O}_3=2$

For a good quality cement the ratio of silica to alumina should be in the range of

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