Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates

The effect of two precursors (slag and fly ash), different particle size distribution, and three types of aggregate (siliceous sand, limestone, and recycled concrete) on alkali-activated material (AAM) mortar rheology were studied and compared to their effect on an ordinary Portland Cement (OPC) mor...

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Detalles Bibliográficos
Autores: Gismera Diez, Sara, Alonso López, M. del Mar, Palacios, Marta, Puertas, Francisca
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/218447
Acceso en línea:http://hdl.handle.net/10261/218447
Access Level:acceso abierto
Palabra clave:Alkali-activated materials
OPC
Mortars
Rheology
Aggregates
Slag
Fly ash
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spelling Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of AggregatesGismera Diez, SaraAlonso López, M. del MarPalacios, MartaPuertas, FranciscaAlkali-activated materialsOPCMortarsRheologyAggregatesSlagFly ashThe effect of two precursors (slag and fly ash), different particle size distribution, and three types of aggregate (siliceous sand, limestone, and recycled concrete) on alkali-activated material (AAM) mortar rheology were studied and compared to their effect on an ordinary Portland Cement (OPC) mortar reference. Stress growth and flow curve tests were conducted to determine plastic viscosity and static and dynamic yield stress of the AAM and OPC mortars. In both OPC and AAM mortars, a reduction of the aggregate size induces a rise of the liquid demand to preserve the plastic consistency of the mortar. In general terms, an increase of the particle size of the siliceous aggregates leads to a decrease of the measured rheological parameters. The AAM mortars require higher liquid/solid ratios than OPC mortars to attain plastic consistency. AAM mortars proved to be more sensitive than OPC mortars to changes in aggregate nature. The partial replacement of the siliceous aggregates with up to 20% of recycled concrete aggregates induced no change in mixing liquid uptake, in either AAM or OPC mortars. All the AAM and OPC mortars studied fitted to the Bingham model.This study was funded by AEI-/FEDER/UE under projects BIA2013-47876-C2-1-P and BIA2016-77252-P. Marta Palacios thanks Consejería de Educación e Investigación (Comunidad de Madrid) for funding the 2016-T1/AMB-1434 project in the frame of “Ayudas de Atracción de Talento Investigador” and MCIU/AEI/FEDER, UE for funding the RTI2018-099326-A-I00 project.Peer reviewedMultidisciplinary Digital Publishing InstituteMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Comunidad de MadridFederación Española de Enfermedades RarasConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/218447reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099326-A-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099326-A-I00https://doi.org/10.3390/min10080726Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2184472026-05-22T06:33:51Z
dc.title.none.fl_str_mv Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
title Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
spellingShingle Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
Gismera Diez, Sara
Alkali-activated materials
OPC
Mortars
Rheology
Aggregates
Slag
Fly ash
title_short Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
title_full Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
title_fullStr Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
title_full_unstemmed Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
title_sort Rheology of Alkali-Activated Mortars: Influence of Particle Size and Nature of Aggregates
dc.creator.none.fl_str_mv Gismera Diez, Sara
Alonso López, M. del Mar
Palacios, Marta
Puertas, Francisca
author Gismera Diez, Sara
author_facet Gismera Diez, Sara
Alonso López, M. del Mar
Palacios, Marta
Puertas, Francisca
author_role author
author2 Alonso López, M. del Mar
Palacios, Marta
Puertas, Francisca
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Comunidad de Madrid
Federación Española de Enfermedades Raras
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Alkali-activated materials
OPC
Mortars
Rheology
Aggregates
Slag
Fly ash
topic Alkali-activated materials
OPC
Mortars
Rheology
Aggregates
Slag
Fly ash
description The effect of two precursors (slag and fly ash), different particle size distribution, and three types of aggregate (siliceous sand, limestone, and recycled concrete) on alkali-activated material (AAM) mortar rheology were studied and compared to their effect on an ordinary Portland Cement (OPC) mortar reference. Stress growth and flow curve tests were conducted to determine plastic viscosity and static and dynamic yield stress of the AAM and OPC mortars. In both OPC and AAM mortars, a reduction of the aggregate size induces a rise of the liquid demand to preserve the plastic consistency of the mortar. In general terms, an increase of the particle size of the siliceous aggregates leads to a decrease of the measured rheological parameters. The AAM mortars require higher liquid/solid ratios than OPC mortars to attain plastic consistency. AAM mortars proved to be more sensitive than OPC mortars to changes in aggregate nature. The partial replacement of the siliceous aggregates with up to 20% of recycled concrete aggregates induced no change in mixing liquid uptake, in either AAM or OPC mortars. All the AAM and OPC mortars studied fitted to the Bingham model.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/218447
url http://hdl.handle.net/10261/218447
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099326-A-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099326-A-I00
https://doi.org/10.3390/min10080726
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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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