Effect of alkaline salts on calcium sulfoaluminate cement hydration

This work analyzes the effect of the presence of 5 wt.% of solid sodium salts (NaSO, NaCO, and NaSiO) on calcium sulfoaluminate cement (CSA) hydration, addresses hydration kinetics; 2-, 28-, and 90-d mechanical strength, and reaction product microstructure (with X-ray diffraction (XRD), and Fourier...

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Detalles Bibliográficos
Autores: Urbano Durlo Tambara Júnior, Luís, Rocha, Janaíde C., Cheriaf, Malik, Padilla Encinas, Pilar, Fernández-Jiménez, Ana, Palomo, Ángel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/257721
Acceso en línea:http://hdl.handle.net/10261/257721
Access Level:acceso abierto
Palabra clave:calcium sulfoaluminate cement
alkaline salts
microstructure
ettringite
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spelling Effect of alkaline salts on calcium sulfoaluminate cement hydrationUrbano Durlo Tambara Júnior, LuísRocha, Janaíde C.Cheriaf, MalikPadilla Encinas, PilarFernández-Jiménez, AnaPalomo, Ángelcalcium sulfoaluminate cementalkaline saltsmicrostructureettringiteThis work analyzes the effect of the presence of 5 wt.% of solid sodium salts (NaSO, NaCO, and NaSiO) on calcium sulfoaluminate cement (CSA) hydration, addresses hydration kinetics; 2-, 28-, and 90-d mechanical strength, and reaction product microstructure (with X-ray diffraction (XRD), and Fourier transform infrared spectroscopy, (FTIR). The findings show that the anions affect primarily the reactions involved. Ettringite and AH, are the majority hydration products, while monosulfates are absent in all of the samples. All three salts hasten CSA hydration and raise the amount of ettringite formed. NaSO induces cracking in the ≥28-d pastes due to posthardening gypsum and ettringite formation from the excess SO present. Anhydrite dissolves more rapidly in the presence of NaCO, prompting carbonation. NaSiO raises compressive strength and exhibits strätlingite as one of its reaction products.This study was partially supported by the Brazilian National Council for Scientific and Technological Development (CNPq) under projects 208380/2017‐5 and 151890/2020‐0, and CAPES. Financial support was also furnished by the Spanish Ministry of the Economy and Competitiveness and FEDER under research project BIA2016‐76466‐R and funding from BES‐2017‐082022. PhD. student Pilar Padilla‐Encinas thanks the Autonomous University of Madrid for the opportunity to complete her thesis in its Applied Chemistry program. The cement supplied by Heidelberg Cement Hispania is gratefully acknowledgedMolecular Diversity Preservation InternationalMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220212022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/257721reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/BIA2016‐76466‐Rhttp://dx.doi.org/10.3390/molecules26071938Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2577212026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of alkaline salts on calcium sulfoaluminate cement hydration
title Effect of alkaline salts on calcium sulfoaluminate cement hydration
spellingShingle Effect of alkaline salts on calcium sulfoaluminate cement hydration
Urbano Durlo Tambara Júnior, Luís
calcium sulfoaluminate cement
alkaline salts
microstructure
ettringite
title_short Effect of alkaline salts on calcium sulfoaluminate cement hydration
title_full Effect of alkaline salts on calcium sulfoaluminate cement hydration
title_fullStr Effect of alkaline salts on calcium sulfoaluminate cement hydration
title_full_unstemmed Effect of alkaline salts on calcium sulfoaluminate cement hydration
title_sort Effect of alkaline salts on calcium sulfoaluminate cement hydration
dc.creator.none.fl_str_mv Urbano Durlo Tambara Júnior, Luís
Rocha, Janaíde C.
Cheriaf, Malik
Padilla Encinas, Pilar
Fernández-Jiménez, Ana
Palomo, Ángel
author Urbano Durlo Tambara Júnior, Luís
author_facet Urbano Durlo Tambara Júnior, Luís
Rocha, Janaíde C.
Cheriaf, Malik
Padilla Encinas, Pilar
Fernández-Jiménez, Ana
Palomo, Ángel
author_role author
author2 Rocha, Janaíde C.
Cheriaf, Malik
Padilla Encinas, Pilar
Fernández-Jiménez, Ana
Palomo, Ángel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv calcium sulfoaluminate cement
alkaline salts
microstructure
ettringite
topic calcium sulfoaluminate cement
alkaline salts
microstructure
ettringite
description This work analyzes the effect of the presence of 5 wt.% of solid sodium salts (NaSO, NaCO, and NaSiO) on calcium sulfoaluminate cement (CSA) hydration, addresses hydration kinetics; 2-, 28-, and 90-d mechanical strength, and reaction product microstructure (with X-ray diffraction (XRD), and Fourier transform infrared spectroscopy, (FTIR). The findings show that the anions affect primarily the reactions involved. Ettringite and AH, are the majority hydration products, while monosulfates are absent in all of the samples. All three salts hasten CSA hydration and raise the amount of ettringite formed. NaSO induces cracking in the ≥28-d pastes due to posthardening gypsum and ettringite formation from the excess SO present. Anhydrite dissolves more rapidly in the presence of NaCO, prompting carbonation. NaSiO raises compressive strength and exhibits strätlingite as one of its reaction products.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
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/10261/257721
url http://hdl.handle.net/10261/257721
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/BIA2016‐76466‐R
http://dx.doi.org/10.3390/molecules26071938
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Molecular Diversity Preservation International
publisher.none.fl_str_mv Molecular Diversity Preservation International
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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