Per: Carlos Alberto de Oliveira Guimaraes (UENF ), Geovana Carla Girondi Delaqua (UENF), Cássio Rangel Paulista (uenf), Carlos Maurício Fontes Vieira (uenf)
Abstract:
The main objective of this study was to evaluate how the inclusion of waste sludge, generated in the flat glass cutting and polishing process, influences water absorption, linear shrinkage, and mechanical strength of red ceramics produced from a clay mass that incorporated 5% coffee husk. Starting from the base formulation with 5% coffee husk, glass sludge was incorporated in different proportions: 5%, 15%, and 25% by weight. By extrusion, specimens with standardized dimensions of 110 mm x 30 mm x 20 mm were manufactured and subjected to firing cycles at temperatures of 800°C and 900°C. Subsequently, tests for water absorption, linear shrinkage, and compressive strength were conducted. The results obtained showed that the glass waste has significant potential to be used as a component in clay body formulations, mitigating the deleterious effect of the coffee husk. Standing out for its ability to reduce water absorption and increase the mechanical strength of ceramics, it suggests promising opportunities for the sustainable use of this waste in the production of enhanced ceramic materials