Effects of Firing Conditions on the Properties of Calcareous Clay Roofing Tiles
Publication: Journal of Materials in Civil Engineering
Volume 26, Issue 1
Abstract
The effects of firing conditions on the microstructure and physical properties of clay roofing tiles are studied. This research presents the effects of oxidizing and reducing atmosphere on Kanjiža clay material with carbonate content up to 22% by weight and the characterization of the final products. The firing was done both in the laboratory and under industrial conditions. The ratio played a decisive role in the sintering process under a reducing atmosphere. The formed glassy phase, with the presence of , attacked the earth-alkali oxides after the carbonate decomposition and more effectively filled smaller pores. The obtained results justified the benefits of the reducing firing atmosphere with 5% CO, lower porosity, higher frost resistance values, and changed microstructural characteristics
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Acknowledgments
The authors would like to express their gratitude to Company “Eisenmann” for enabling them to use the chamber kiln for reducing atmosphere firing. The first author is also grateful to the Domus Hungarica Scientarium et Artium foundation, which provides the funding for his specialization at the Laboratory of Nuclear Chemistry, Institute of Chemistry of the Eötvös Loránd Univ., Budapest, Hungary. The financial support given to the Ministry of education, science, and technological development of the Republic of Serbia (project III 45008) is also appreciated.
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Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 26 • Issue 1 • January 2014
Pages: 175 - 183
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 29, 2012
Accepted: Jan 14, 2013
Published online: Jan 16, 2013
Discussion open until: Jun 16, 2013
Published in print: Jan 1, 2014
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