Fly ash as an assemblage of model Ca-Mg-Na-aluminosilicate glasses

被引：105
|
作者：
Durdzinski, Pawel T. [1 ]
Snellings, Ruben [1 ]
Dunant, Cyrille F. [1 ]
Ben Haha, Mohsen [2 ]
Scrivener, Karen L. [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Lab Construct Mat, Stn 12, CH-1015 Lausanne, Switzerland
[2] HeidelbergCement AG, HeidelbergCement Technol Ctr GmbH, D-69181 Leimen, Germany
来源：
CEMENT AND CONCRETE RESEARCH | 2015年 / 78卷
关键词：
Reaction; EDX; Glass; Image analysis; Fly ash; BLENDED CEMENT PASTES; SILICATE; QUANTIFICATION; HYDRATION; CALCIUM; DISSOLUTION; COMPONENTS; SYSTEMS; MAGMA; MELTS;
D O I：
10.1016/j.cemconres.2015.08.005
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Model Ca-Mg-Na-aluminosilicate glasses based on compositions found in a calcareous fly ash were synthesised and their reactivity assessed in NaOH solution and in Portland cement paste. It was found that the reactivity followed the same trend in both systems and that the reaction of the glasses in pastes was very similar to that of the components of similar composition in the real fly ash. This finding indicates that the reactivity of glass in cement can be directly linked to the chemical composition of the glass. Further, when the reactivity of the glasses was normalized to their surface area, it was found that there exists a strong correlation with the NBOff, the ratio of non-bridging oxygens and tetrahedral ions in the glass. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：263 / 272
页数：10
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