In cement composition,the main compound (by p | vedclass

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(A) The composition of Portland cement consists primarily of calcium oxide $(CaO)$,which typically accounts for $50-60\%$ of the total mass. Other com

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$CaO$

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(A) The composition of Portland cement consists primarily of calcium oxide $(CaO)$,which typically accounts for $50-60\%$ of the total mass. Other components include silicon dioxide ($SiO_2$,$20-25\%$),aluminum oxide ($Al_2O_3$,$5-10\%$),and iron oxide ($Fe_2O_3$,$1-2\%$). Therefore,$CaO$ is the main compound by percentage.

In cement composition,the main compound (by percentage) is?

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