Effect of High Temperatures on the Properties of Alkali Activated Aluminosilicate with Electrical Porcelain Filler

The effect of thermal pre-treatment up to 1,200°C on the structure and properties of alkali-activated aluminosilicate material containing electrical porcelain filler is analyzed in this article. The material is found to have very good high-temperature resistance. The reasons for its positive respons...

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Bibliographic Details
Published in:International journal of thermophysics 2008-04, Vol.29 (2), p.693-705
Main Authors: Zuda, Lucie, Rovnaník, Pavel, Bayer, Patrik, Černý, Robert
Format: Article
Language:English
Subjects:
Classical Mechanics
Condensed Matter Physics
Industrial Chemistry/Chemical Engineering
Physical Chemistry
Physics
Physics and Astronomy
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Summary:The effect of thermal pre-treatment up to 1,200°C on the structure and properties of alkali-activated aluminosilicate material containing electrical porcelain filler is analyzed in this article. The material is found to have very good high-temperature resistance. The reasons for its positive response to high-temperature exposure are, on one hand, the formation and subsequent crystallization of akermanite, and on the another hand, melting of electrical porcelain filler in the alkali environment at about 1,150°C and its subsequent reaction with the porous matrix resulting in formation of ceramic bonds. The combination of these two positive effects complementing each other in the formation of a new structure is responsible for the structure compaction indicated by the sudden decrease in porosity and is manifested in quite remarkable improvement of mechanical properties.
ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-007-0311-y