Effect of relative humidity on the reaction products of alkali activated fly ash

被引：53

作者：

Criado, M. ^{[1
]}

Fernandez Jimenez, A. ^{[2
]}

Sobrados, I. ^{[3
]}

Palomo, A. ^{[2
]}

Sanz, J. ^{[3
]}

机构：

[1] Ctr Nacl Invest Metalurg CSIC, Madrid 28040, Spain

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

[3] Inst Ciencia Mat Madrid CSIC, Canto Blanco 28049, Spain

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2012年 / 32卷 / 11期

关键词：

Fly ash; Electron microscopy; Spectroscopy; Mechanical properties; Silicate; CURING CONDITIONS; RATIO; SI-29;

D O I：

10.1016/j.jeurceramsoc.2011.11.036

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The alkali activation of fly ash (AAFA) is a chemical process in which the ash is mixed with an alkaline activator and cured at a mild temperature to generate compact solids. Both the curing conditions (temperature, time, relative humidity, etc.) and the nature and concentration of the alkali activator play a key role in the development of AAFA micro- and nanostructure, and consequently the properties of these materials. In the present study, fly ash was activated with a 15% water-glass (Na2SiO3) + 85% 10-M NaOH solution at 85 degrees C for 12 h, 7 and 30 days. Two curing methods were used, in which the variable was the relative humidity (RH). (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2799 / 2807

页数：9

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