1.

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) FalseI 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

Answer»

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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