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Preparations and Uses of Sodium Bicarbonate and Common Salt

Which of the ...

Question

Which of the following cements is expected to have the highest compressive strength after 3 days?

A

Ordinary Portland cement

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B

Rapid hardening cement

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C

High alumina cement

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D

Sulphate resisting cement

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Solution

The correct option is C High alumina cement
Ans: (c): High alumina cement - It is manufactured by grinding the clinkers of alumina and calcareous material such as lime by fusing or sintering process.
Constituents -
Silica = 3 - 8%
Alumina = 37 - 41 %
Lime = 36 - 40%
Iron oxide = 9 - 10%
Titanium = 1.5 - 2%
Magnesium = 1.1 %

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