Abstract
The present work aims to evaluate the influence of different residue incorporations on the physical and mechanical properties of a typical red ceramic composition, replacing the sand, by using the residue from the first stage of tempered glass manufacturing. Ceramic specimens were prepared with incorporations of 0 and 20% of flat glass waste. The samples were obtained by extrusion, dried and fired at 800, 900, 1000 ° C in a laboratory oven. Analyzes of the raw materials were performed, among which the thermal, morphological, physical and chemical can be highlighted. Tests on the fired ceramic specimens were also performed. The firing properties obtained were the dry bulk density, relative density, water absorption, dry linear shrinkage, linear firing shrinkage and flexural strength. The results showed that both the increase of the glass content and the increase of temperature had a positive influence on the studied properties. Furthermore, it confirmed that the glass waste acted in order to lower the proper firing temperature. Flat glass waste is therefore a highly recommended fluxing element for the red ceramic industry, as it can be incorporated in quantities as significant as 20% without major negative effects on the properties, therefore optimizing the amount of waste used and acting positively on the properties studied, reducing energy and raw material costs.
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