Affiliation:
1. State University of the Northern Rio de Janeiro
2. IME - Military Institute of Engineering
Abstract
The kaolinitic clays from Campos dos Goytacazes, state of Rio de Janeiro, Brazil, are known by their high plasticity and refractory behavior that require sintering at elevated temperatures for consolidated ceramic structures. Processing temperatures below 1000°C may also be used if the clay body contains fluxing compounds that promote lower temperature molten phases and reduce porosity. Commercial fluxes are relatively expensive but some wastes, such as those generated in industrial activities related to glass fabrication, could provide inexpensive fluxing agents. In the present work, the incorporation of up to 40 wt% of a sludge waste from the polishing stage of glass production into a Campos dos Goytacazes clay body fired at 900°C was investigated. It was found that the sludge incorporation improved both the ceramic water absorption and the mechanical strength.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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