2024-03-28T11:44:01Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/198912021-06-11T10:47:32Zcom_10261_23com_10261_3col_10261_276
Alkaline activation of metakaolin–fly ash mixtures: Obtain of Zeoceramics and Zeocements
Fernández-Jiménez, Ana
Monzó, M.
Vicent, M.
Barba, A.
Palomo, Ángel
Metakaolin
Fly ash
SEM
29Si MAS NMR
Alkaline activation
Zeolites
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.
2010-01-05T13:43:56Z
2010-01-05T13:43:56Z
2008-02-01
artículo
Microporous and Mesoporous Materials 108(1-3): 41-49 (2008)
1387-181
http://hdl.handle.net/10261/19891
10.1016/j.micromeso.2007.03.024
eng
http://dx.doi.org/10.1016/j.micromeso.2007.03.024
closedAccess
Elsevier