''Geopolymers": same basic chemistry, different microstructures

The present paper describes the effect of certain working variables on the microstructural evolution of oven-dried, alkali-activated fly ash. The results show that the main reaction product in the activation process (in all the systems studied) is an amorphous aluminosilicate gel with a three-dimens...

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Main Authors: A. Palomo, A. Fernández-Jiménez, M. Criado
Format: Article
Language:English
Published: Consejo Superior de Investigaciones Científicas 2004-09-01
Series:Materiales de Construccion
Subjects:
Online Access:http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/249
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author A. Palomo
A. Fernández-Jiménez
M. Criado
author_facet A. Palomo
A. Fernández-Jiménez
M. Criado
author_sort A. Palomo
collection DOAJ
description The present paper describes the effect of certain working variables on the microstructural evolution of oven-dried, alkali-activated fly ash. The results show that the main reaction product in the activation process (in all the systems studied) is an amorphous aluminosilicate gel with a three-dimensional structure. Nonetheless, the type and concentration of the activator used as well as the natural ageing of the materials and origin of the prime materials were also found to have a substantial impact on microstructural development in the "geopolymers " synthesised, particularly from the morphological standpoint.
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spelling doaj.art-b4cb16d0b14245ca931677352ea72e322022-12-21T21:59:00ZengConsejo Superior de Investigaciones CientíficasMateriales de Construccion0465-27461988-32262004-09-0154275779110.3989/mc.2004.v54.i275.249238''Geopolymers": same basic chemistry, different microstructuresA. Palomo0A. Fernández-Jiménez1M. Criado2Instituto de Ciencias de la Construcción Eduardo Torroja (CSIC)Instituto de Ciencias de la Construcción Eduardo Torroja (CSIC)Instituto de Ciencias de la Construcción Eduardo Torroja (CSIC)The present paper describes the effect of certain working variables on the microstructural evolution of oven-dried, alkali-activated fly ash. The results show that the main reaction product in the activation process (in all the systems studied) is an amorphous aluminosilicate gel with a three-dimensional structure. Nonetheless, the type and concentration of the activator used as well as the natural ageing of the materials and origin of the prime materials were also found to have a substantial impact on microstructural development in the "geopolymers " synthesised, particularly from the morphological standpoint.http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/249fly ashmetakaolinalkaline activationmicrostructure
spellingShingle A. Palomo
A. Fernández-Jiménez
M. Criado
''Geopolymers": same basic chemistry, different microstructures
Materiales de Construccion
fly ash
metakaolin
alkaline activation
microstructure
title ''Geopolymers": same basic chemistry, different microstructures
title_full ''Geopolymers": same basic chemistry, different microstructures
title_fullStr ''Geopolymers": same basic chemistry, different microstructures
title_full_unstemmed ''Geopolymers": same basic chemistry, different microstructures
title_short ''Geopolymers": same basic chemistry, different microstructures
title_sort geopolymers same basic chemistry different microstructures
topic fly ash
metakaolin
alkaline activation
microstructure
url http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/249
work_keys_str_mv AT apalomo geopolymerssamebasicchemistrydifferentmicrostructures
AT afernandezjimenez geopolymerssamebasicchemistrydifferentmicrostructures
AT mcriado geopolymerssamebasicchemistrydifferentmicrostructures