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Sodium fluosilicate added in the acid-resistant cement decreases the resistance of cement to water and acid and also retards the hardening process of soluble glass.

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Sodium fluosilicate added in the acid-resistant cement decreases the resistance of cement to water and acid and also retards the hardening process of soluble glass.

(a) True

(b) False

I have been asked this question in an online interview.

My question is taken from Plain and Reinforced topic in section Miscellaneous Materials, Plain and Reinforced Cement Concrete of Construction & Building Materials

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The correct choice is (b) False

The best I can explain: An acid-resistant cement consists of acid-resistant aggregates like quartz, additives like sodium fluosilicate and soluble glass. Sodium fluosilicate added in the acid-resistant cement increases the resistance of cement to water and acid and also accelerates the hardening process of soluble glass.

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