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Gypsum reacts with ____________ to form calcium sulfo aluminates and calcium sulfo ferrite.(a) C4AF(b) CF4(c) SO3(d) CaOI have been asked this question in a national level competition.The doubt is from Chemical Composition Test in chapter Types of Cement and Testing of Cement of Concrete Technology

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Right OPTION is (a) C4AF

To explain: C4AF work as flux material and also it accelerates the HYDRATION of SILICATES. C4AF hydrates to tricalcium ALUMINATE hydrate and calcium ferrite CaO.Fe2O3 in amorphous form.



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