Journal
CERAMICS INTERNATIONAL
Volume 31, Issue 3, Pages 371-374Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2004.06.002
Keywords
high alumina cement hydrate; kinetics; dehydration; non-isothermal
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Calcium aluminate cement (containing 75% Al2O3), which finds extensive high temperature applications, was synthesized by sintering a mixture of calcined alumina and synthetic calcium carbonate. The cement was hydrated and its kinetics of thermal dehydration was studied under non-isothermal conditions by thermo-gravimetry using the integral approximation model. It was observed that on heating the cement hydrate followed multistage dehydration with different reaction orders at different stages. The activation energies of dehydration for these different stages were compared. (c) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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