Calorimetric studies of refractory corundum |
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Authors: | Sawków J Nocuń-Wczelik Wies?awa |
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Institution: | (1) Institute of Refractory Materials, ul. Toszecka 99, 44-101 Gliwice, Poland;(2) Faculty of Material Science and Ceramics, University of Mining and Metallurgy, Mickiewicza 30, 30-059 Cracow, Poland |
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Abstract: | Calorimetry has been used in the investigations of calcium aluminate materials produced as a binder for aluminate-corundum
composites of high refractoriness. The kinetics and of hydration process was thus characterized and the optimum compositions
of initial binders and cement-corundum refractory filler blends could be selected for further tests. The acceleration of heat
evolution - the shortening of so-called induction period and relatively high heat output in the presence of corundum was observed.
It means the acceleration of hydration process, that is early crystallisation of hydration products and subsequent further
dissolution of initial anhydrous aluminate phases. In the presence of fine grained corundum particles these phenomena should
be attributed to the nucleating effect of fine corundum particles.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | calcium aluminate cement refractory concrete heat of hydration |
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