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Título

Alkaline activation of metakaolin–fly ash mixtures: Obtain of Zeoceramics and Zeocements

AutorFernández-Jiménez, Ana; Monzó, M.; Vicent, M.; Barba, A.; Palomo, Ángel
Palabras claveMetakaolin
Fly ash
SEM
29Si MAS NMR
Alkaline activation
Zeolites
Fecha de publicación1-feb-2008
EditorElsevier
CitaciónMicroporous and Mesoporous Materials 108(1-3): 41-49 (2008)
ResumenThis 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 editorhttp://dx.doi.org/10.1016/j.micromeso.2007.03.024
URIhttp://hdl.handle.net/10261/19891
DOI10.1016/j.micromeso.2007.03.024
ISSN1387-181
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