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Título: | Clinkers and cements obtained from raw mix containing ceramic waste as a raw material. Characterization, hydration and leaching studies |
Autor: | Puertas, Francisca CSIC ORCID; García-Díaz, Irene CSIC; Palacios, Marta CSIC ORCID ; Gazulla, M. F.; Gómez, M. P.; Orduña, M. | Palabras clave: | Portland cement Ceramic wastes Ceramic wastes Hydration Leaching |
Fecha de publicación: | mar-2010 | Editor: | Elsevier | Citación: | Cement and Concrete Composites 32(3): 175-186(2010) | Resumen: | [EN]A clinker and a cement obtained from a raw mix containing ceramic waste as an alternative raw material were characterized in the present study. Their hydration, physical–chemical properties and leaching behaviour in different acid media were also explored. The findings showed that both the clinker and the cement met all the requirements set out in European standards EN 197-1 [1], although they had higher ZnO, ZrO2, and B2O3 contents than an industrially produced reference product. According to the hydration studies, initial hydration was somewhat retarded in the new cement, which exhibited longer initial and final setting times and lower 2-day mechanical strength. The SEM/BSE/EDS microstructural study showed, however, that morphologically and compositionally, the hydration products formed were comparable to unadditioned Portland cement paste products. While low concentrations of Zn and B were observed to leach in acid media, the biotoxicity trials conducted confirmed that these concentrations were not toxic. Zr was retained in the cement pastes. | Versión del editor: | http://dx.doi.org/10.1016/j.cemconcomp.2009.11.011 | URI: | http://hdl.handle.net/10261/35203 | DOI: | 10.1016/j.cemconcomp.2009.11.011 | ISSN: | 0958-9465 |
Aparece en las colecciones: | (IETCC) Artículos |
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