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Título: | Alkaline activation of metakaolin–fly ash mixtures: Obtain of Zeoceramics and Zeocements |
Autor: | Fernández-Jiménez, Ana CSIC ORCID ; Monzó, M.; Vicent, M.; Barba, A.; Palomo, Ángel CSIC ORCID | Palabras clave: | Metakaolin Fly ash SEM 29Si MAS NMR Alkaline activation Zeolites |
Fecha de publicación: | 1-feb-2008 | Editor: | Elsevier | Citación: | Microporous and Mesoporous Materials 108(1-3): 41-49 (2008) | Resumen: | This study examines the variation in physico-mechanical properties and mineralogical and microstructural characteristics of the alkaline inorganic polymers obtained by alkaline activation, with a mixture of sodium silica solution and sodium hydroxide, of two different starting materials: matrix M (metakaolin) and matrix FM (50% fly ash and 50% metakaolin). The activation process was conducted at different temperatures (85 °C, 150 °C, and 200 °C). The highest strength values were obtained for the FM matrix at 150 °C. The main reaction product was a sodium aluminosilicate gel in every case. Zeolites formed as by-products. The quantity and type of arising zeolites (sodalite, zeolite A, and faujasite) depended on the nature of the starting material and on the curing conditions used. | Versión del editor: | http://dx.doi.org/10.1016/j.micromeso.2007.03.024 | URI: | http://hdl.handle.net/10261/19891 | DOI: | 10.1016/j.micromeso.2007.03.024 | ISSN: | 1387-181 |
Aparece en las colecciones: | (IETCC) Artículos |
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