INVESTIGAÇÃO DAS PROPRIEDADES DE PASTAS DE CIMENTO PORTLAND PRODUZIDAS COM FÍLER DE CASCAS DE OVOS
Keywords:
Palavras-chave: Reologia; Cinética de hidratação; Resíduo agroindustrial; Análise termogravimétrica.Abstract
Resíduos industriais e agrícolas têm sido explorados para incorporação em matrizes cimentícias, para redução do fator clínquer. Dessa forma, foi produzido fíler a partir de resíduos de casca de ovos (FCO) para substituir parcialmente (0-15%) o cimento Portland (CP) para produção de pastas. De maneira geral, a viscosidade, as tensões de escoamento estática e dinâmica aumentaram, em contrapartida, o calor total acumulado e a resistência à compressão reduziram, com o aumento dos teores de substituição. Por fim, através da análise termogravimétrica, foi possível acompanhar a formação dos produtos hidratados, bem como verificar a ausência de atividade pozolânica do FCO.
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