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VITRIFICATION OF LIGNITE FLY ASH AND METAL SLAGS FOR THE PRODUCTION OF GLASS AND GLASS CERAMICS

China Particuology 2006年第5期4卷 250-253页

作者： a.karamberi A.Moutsatsou Laboratory of Inorganic and Analytical Chemistry Chemical Engineering Department National Technical University of Athens 9 Heroon Polytechniou Str. 157 73 Athens Greece

This work focuses on the production of glass and glass-ceramics by using industrial wastes or by-products, e.g., two fly ashes from the combustion of lignite, a slag from the production of Fe-Ni and a slag from the making of steel. Vitrification took place at 1 350°-1450℃ and crystallization was achieved by heat treatment at 900, 950 and 1 000℃. The capability of the waste to be vitrified and subsequently devitrified was determined by XRD techniques. The crystalline phase depends greatly on the structure of the by-product and the heat treatment. The final products showed low leachability and good hardness.

关键词： fly ash slag vitrification de-vitrification glass-ceramics

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INFLUENCE OF GLASS CULLET IN CEMENT PASTES

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China Particuology 2006年第5期4卷 234-237页

作者： a.karamberi E.Chaniotakis D.Papageorgiou A.Moutsatsou Laboratory of Inorganic and Analytical Chemistry Chemical Engineering Department National Technical University of Athens 9 Heroon Polytechniou Str. 157 73 Athens Greece "Titan"Cement Company S. A. P. O. Box 18-GR 19200 Elefsis Greece

The present study investigates glass and cement compatibility with a view to use glass as a cement replacement. Amber, flint and green glasses were chosen due to their prevalence in the Greek market as packaging materials. The factors under investigation were the pozzolanicity of the glass cullet, the hydration rate and the mechanical strength development of the cement pastes, as well as the expansion of the specimens due to alkali-silica reaction. Moreover, the potential enhancement of glass pozzolanic activity was examined. The results of the study were encouraging to show the potentiality of utilising glass cullet in cementitious products.

关键词： glass cullet cement pastes pozzolanicity

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