Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description

The micro- and nano-structural characteristics of the reaction products of fly ash alkali activation depend, among others, on the curing conditions used: temperature, time and relative humidity. The present study focuses primarily on relative humidity. When the material is cured in air-tight contain...

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Detalhes bibliográficos
Autores: Criado Sanz, María, Fernández-Jiménez, Ana, Palomo, Ángel
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/32658
Acesso em linha:http://hdl.handle.net/10261/32658
Access Level:acceso abierto
Palavra-chave:Alkali activated
Fly ash
Relative humidity
Microscopic and nanostructural model
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spelling Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical descriptionCriado Sanz, MaríaFernández-Jiménez, AnaPalomo, ÁngelAlkali activatedFly ashRelative humidityMicroscopic and nanostructural modelThe micro- and nano-structural characteristics of the reaction products of fly ash alkali activation depend, among others, on the curing conditions used: temperature, time and relative humidity. The present study focuses primarily on relative humidity. When the material is cured in air-tight containers, the silicon content of the initial aluminium-rich material gradually increases. This end product is dense and compact. When samples are in direct contact with the atmosphere, however, early age carbonation takes place, resulting in water loss and persistence of a high-aluminium content. This resulting material is granular and develops lower mechanical strength than the paste cured under high RH conditions. The main nano- and micro-structural differences observed in the materials as a result of different curing conditions have been shown through a graphical description of the reactions.This study was funded by MICINN under project MAT2006-11705. M. Criado express her gratitude to the CSIC for the contract under the JAE-Doc contract (Ref. JAE-Doc2007) cofinanced by the European Social Fund.Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)European CommissionConsejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201120112010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/32658reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.fuel.2010.03.051Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/326582026-05-22T06:33:51Z
dc.title.none.fl_str_mv Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
title Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
spellingShingle Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
Criado Sanz, María
Alkali activated
Fly ash
Relative humidity
Microscopic and nanostructural model
title_short Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
title_full Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
title_fullStr Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
title_full_unstemmed Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
title_sort Alkali activation of fly ash. Part III: Effect of curing conditions on reaction and its graphical description
dc.creator.none.fl_str_mv Criado Sanz, María
Fernández-Jiménez, Ana
Palomo, Ángel
author Criado Sanz, María
author_facet Criado Sanz, María
Fernández-Jiménez, Ana
Palomo, Ángel
author_role author
author2 Fernández-Jiménez, Ana
Palomo, Ángel
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
European Commission
Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Alkali activated
Fly ash
Relative humidity
Microscopic and nanostructural model
topic Alkali activated
Fly ash
Relative humidity
Microscopic and nanostructural model
description The micro- and nano-structural characteristics of the reaction products of fly ash alkali activation depend, among others, on the curing conditions used: temperature, time and relative humidity. The present study focuses primarily on relative humidity. When the material is cured in air-tight containers, the silicon content of the initial aluminium-rich material gradually increases. This end product is dense and compact. When samples are in direct contact with the atmosphere, however, early age carbonation takes place, resulting in water loss and persistence of a high-aluminium content. This resulting material is granular and develops lower mechanical strength than the paste cured under high RH conditions. The main nano- and micro-structural differences observed in the materials as a result of different curing conditions have been shown through a graphical description of the reactions.
publishDate 2010
dc.date.none.fl_str_mv 2010
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/32658
url http://hdl.handle.net/10261/32658
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.fuel.2010.03.051
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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