Early age hydration of cements containing ye’elimite (YCC) produced with spent catalyst (SFCC)
Given the environmental impacts associated with the production of conventional Portland cement, the study of special cements with reduced environmental impact has been a trend. In this context, cements containing ye'elimite (YCC) stand out due to their low CO2 emissions. Despite the environment...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | Brasil |
| Institución: | Associação Nacional de Tecnologia do Ambiente Construído (ANTAC) |
| Repositorio: | Ambiente construído (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:seer.ufrgs.br:article/131379 |
| Acceso en línea: | https://seer.ufrgs.br/index.php/ambienteconstruido/article/view/131379 |
| Access Level: | acceso abierto |
| Palabra clave: | Calcium sulfoaluminate cement Waste Spent equilibrium catalyst Clinker Hydration. Cemento de sulfoaluminato de calcio Residuo Catalizador gastado clinker Hidratación Cimento cálcio sulfoaluminato Resíduo Catalisador de equilíbrio gasto Clínquer hidratação |
| Sumario: | Given the environmental impacts associated with the production of conventional Portland cement, the study of special cements with reduced environmental impact has been a trend. In this context, cements containing ye'elimite (YCC) stand out due to their low CO2 emissions. Despite the environmental advantages, the high demand for aluminum economically limits the production of these cements. An alternative to making its production feasible is using residual raw materials as a source of Al2O3, such as SFCC (spent fluidized catalytic cracking). In view of this, this work aims to evaluate hydration at the initial age of cements. For this, six clinkers were produced with different ye'elimite contents, with and without SFCC. These were characterized by XRD/Rietveld. The pastes were evaluated by TG/DTG and XRD/Rietveld to understand the hydration mechanism on the third day of these cements. It was possible to synthesize the main phases of YCC, in clinkers with and without SFCC. In addition, at the age evaluated, the pastes with and without SFCC presented comparable phase composition, indicating the potential for co-processing this residue. |
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