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

被引：153

作者：

Fernandez-Jimenez, A. ^{[1
]}

Monzo, M. ^{[2
]}

Vicent, M. ^{[2
]}

Barba, A. ^{[2
]}

Palomo, A. ^{[1
]}

机构：

[1] CSIC, Inst Ciencias Construcc Eduardo Torroja, Madrid 28033, Spain

[2] ITC, Castellon de La Plana 12006, Spain

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2008年 / 108卷 / 1-3期

关键词：

metakaolin; fly ash; FTIR; SEM; Si-29; MAS-NMR; alkaline activation; zeolites;

D O I：

10.1016/j.micromeso.2007.03.024

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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 degrees C, 150 degrees, and 200 degrees C). The highest strength values were obtained for the FM matrix at 150 degrees 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. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：41 / 49

页数：9

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