Portland cement does not contain:

C a_{3} A l_{2} O_{6}

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C a_{2} S i O_{3}

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C a_{2} S i O_{4}

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C a_{3} (P O_{4})_{2}

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Solution

The correct option is A $C a_{3} (P O_{4})_{2}$
The composition of portland cement is $62 %$ calcium oxide, $22 %$ silica, $7.5 %$ alumina, $2.5 %$ magnesia and $2.5 %$ ferric oxide. Calcium oxide is present in the form of calcium silicates and calcium aluminates. Portland cement does not contain calcium phosphate.

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Portland cement does not contain

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