Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems

The addition of sepiolite in fibre-cement is analysed as a possible additive constituent of MgO-SiO2 binders. In order to optimise the Mg-SiO2 cementitious system in fibre-cement sheets, small cement replacement (1 and 2 wt%) by sepiolite is introduced and its effects are studied, firstly, in harden...

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Detalles Bibliográficos
Autores: Mármol, Gonzalo, Savastano Jr, Holmer, Fuente, Elena de la, Miranda, Rubén, Blanco, Ángeles, Negro, Carlos
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/413306
Acceso en línea:http://hdl.handle.net/10261/413306
http://dx.doi.org/10.1016/j.cemconres.2019.105816
Access Level:acceso abierto
Palabra clave:Drainage
Fibre-cement
Flocculation
MgO-SiO2-H2O cement
Sepiolite
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network_name_str España
repository_id_str
spelling Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systemsMármol, GonzaloSavastano Jr, HolmerFuente, Elena de laMiranda, RubénBlanco, ÁngelesNegro, CarlosDrainageFibre-cementFlocculationMgO-SiO2-H2O cementSepioliteThe addition of sepiolite in fibre-cement is analysed as a possible additive constituent of MgO-SiO2 binders. In order to optimise the Mg-SiO2 cementitious system in fibre-cement sheets, small cement replacement (1 and 2 wt%) by sepiolite is introduced and its effects are studied, firstly, in hardened cement pastes and, later, in fibre-cement systems. When used only in cement pastes, non-destructive studies are employed to assess flexural performance over time as well as the possible reactivity between additive and cement, proving that Elastic Modulus is increased. When sepiolite is introduced in fibre-cement, the properties of the slurry suspensions and its interference in the Hatschek process are studied. It is shown that sepiolite addition increases floc size of MgO-SiO2 systems. Finally, flexural tests are performed to understand the outcome of this additive of the mechanical performance of the samples, proving that sepiolite improves the product homogeneity, which is essential for industrial applications.Peer reviewedElsevier BVElkemFundação de Amparo à Pesquisa do Estado de São PauloUniversidad Complutense de MadridMármol, Gonzalo [0000-0003-1850-3178]202620262019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/413306http://dx.doi.org/10.1016/j.cemconres.2019.105816reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCement and Concrete Researchhttps://doi.org/10.1016/j.cemconres.2019.105816Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4133062026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
title Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
spellingShingle Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
Mármol, Gonzalo
Drainage
Fibre-cement
Flocculation
MgO-SiO2-H2O cement
Sepiolite
title_short Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
title_full Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
title_fullStr Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
title_full_unstemmed Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
title_sort Effect of sepiolite addition on fibre-cement based on MgO-SiO₂ systems
dc.creator.none.fl_str_mv Mármol, Gonzalo
Savastano Jr, Holmer
Fuente, Elena de la
Miranda, Rubén
Blanco, Ángeles
Negro, Carlos
author Mármol, Gonzalo
author_facet Mármol, Gonzalo
Savastano Jr, Holmer
Fuente, Elena de la
Miranda, Rubén
Blanco, Ángeles
Negro, Carlos
author_role author
author2 Savastano Jr, Holmer
Fuente, Elena de la
Miranda, Rubén
Blanco, Ángeles
Negro, Carlos
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Elkem
Fundação de Amparo à Pesquisa do Estado de São Paulo
Universidad Complutense de Madrid
Mármol, Gonzalo [0000-0003-1850-3178]
dc.subject.none.fl_str_mv Drainage
Fibre-cement
Flocculation
MgO-SiO2-H2O cement
Sepiolite
topic Drainage
Fibre-cement
Flocculation
MgO-SiO2-H2O cement
Sepiolite
description The addition of sepiolite in fibre-cement is analysed as a possible additive constituent of MgO-SiO2 binders. In order to optimise the Mg-SiO2 cementitious system in fibre-cement sheets, small cement replacement (1 and 2 wt%) by sepiolite is introduced and its effects are studied, firstly, in hardened cement pastes and, later, in fibre-cement systems. When used only in cement pastes, non-destructive studies are employed to assess flexural performance over time as well as the possible reactivity between additive and cement, proving that Elastic Modulus is increased. When sepiolite is introduced in fibre-cement, the properties of the slurry suspensions and its interference in the Hatschek process are studied. It is shown that sepiolite addition increases floc size of MgO-SiO2 systems. Finally, flexural tests are performed to understand the outcome of this additive of the mechanical performance of the samples, proving that sepiolite improves the product homogeneity, which is essential for industrial applications.
publishDate 2019
dc.date.none.fl_str_mv 2019
2026
2026
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/10261/413306
http://dx.doi.org/10.1016/j.cemconres.2019.105816
url http://hdl.handle.net/10261/413306
http://dx.doi.org/10.1016/j.cemconres.2019.105816
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Cement and Concrete Research
https://doi.org/10.1016/j.cemconres.2019.105816
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
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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