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During the setting action of the cement, tricalcium aluminate is formed within ________ after adding water to the cement.

(a) 6 hours

(b) 24 hours

(c) 4 days

(d) 1 week

This question was posed to me in an interview.

I want to ask this question from Plain and Reinforced in chapter Miscellaneous Materials, Plain and Reinforced Cement Concrete of Construction & Building Materials

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Correct choice is (b) 24 hours

Explanation: During the setting action of the cement, tricalcium aluminate and tetra-calcium alumino-ferrite are formed within 24 hours after adding water to the cement. However, tricalcium silicate is formed within a week.

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