Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance

This research work focuses on the performance of mortars containing ichu ash as a potential environmentally-sound alternative to traditional pozzolans (at 6% and 10% replacement levels) under CO2 and chloride ion rich environments, in order to evaluate the capacity of this material to produce more s...

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Autores: Caneda-Martínez, Laura, Frías, Moisés, Sánchez-Montero, Javier, Rebolledo, Nuria, Flores, Elena, Medina, César
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/335361
Acceso en línea:http://hdl.handle.net/10261/335361
https://doi.org/10.1016/j.cemconcomp.2022.104608
Access Level:acceso abierto
Palabra clave:Ichu ash
Biomass-based pozzolan
Blended cements
Durability
Chloride resistance
Carbonation
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spelling Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistanceCaneda-Martínez, LauraFrías, MoisésSánchez-Montero, JavierRebolledo, NuriaFlores, ElenaMedina, CésarIchu ashBiomass-based pozzolanBlended cementsDurabilityChloride resistanceCarbonationThis research work focuses on the performance of mortars containing ichu ash as a potential environmentally-sound alternative to traditional pozzolans (at 6% and 10% replacement levels) under CO2 and chloride ion rich environments, in order to evaluate the capacity of this material to produce more sustainable and durable blended cements. The results indicate that ichu ash increases the susceptibility to carbonation, although mortars with 6% ichu ash content behave similarly to OPC ones. However, both density and mechanical strength improve after 250 days of carbonation for both ichu-blended mortars. In terms of resistance to chloride penetration, the addition of ichu ash contributes to retaining the ions in the superficial layers of the mortars, inhibiting their advance. It was found that formulations with both 6% and 10% ichu ash content produced a reduction in the chloride diffusion coefficient of approximately 60%. This phenomenon was mainly attributed to the refinement and increased complexity of the microstructure of the mortars due to the pozzolanic effect. Therefore, it was found that in certain types of environments, ichu ash can be an interesting tool to improve the durability of cements while reducing their environmental footprint and exploiting local resources.ElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320222023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/335361https://doi.org/10.1016/j.cemconcomp.2022.104608reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.cemconcomp.2022.104608Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3353612026-05-22T06:33:51Z
dc.title.none.fl_str_mv Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
title Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
spellingShingle Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
Caneda-Martínez, Laura
Ichu ash
Biomass-based pozzolan
Blended cements
Durability
Chloride resistance
Carbonation
title_short Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
title_full Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
title_fullStr Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
title_full_unstemmed Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
title_sort Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
dc.creator.none.fl_str_mv Caneda-Martínez, Laura
Frías, Moisés
Sánchez-Montero, Javier
Rebolledo, Nuria
Flores, Elena
Medina, César
author Caneda-Martínez, Laura
author_facet Caneda-Martínez, Laura
Frías, Moisés
Sánchez-Montero, Javier
Rebolledo, Nuria
Flores, Elena
Medina, César
author_role author
author2 Frías, Moisés
Sánchez-Montero, Javier
Rebolledo, Nuria
Flores, Elena
Medina, César
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Ichu ash
Biomass-based pozzolan
Blended cements
Durability
Chloride resistance
Carbonation
topic Ichu ash
Biomass-based pozzolan
Blended cements
Durability
Chloride resistance
Carbonation
description This research work focuses on the performance of mortars containing ichu ash as a potential environmentally-sound alternative to traditional pozzolans (at 6% and 10% replacement levels) under CO2 and chloride ion rich environments, in order to evaluate the capacity of this material to produce more sustainable and durable blended cements. The results indicate that ichu ash increases the susceptibility to carbonation, although mortars with 6% ichu ash content behave similarly to OPC ones. However, both density and mechanical strength improve after 250 days of carbonation for both ichu-blended mortars. In terms of resistance to chloride penetration, the addition of ichu ash contributes to retaining the ions in the superficial layers of the mortars, inhibiting their advance. It was found that formulations with both 6% and 10% ichu ash content produced a reduction in the chloride diffusion coefficient of approximately 60%. This phenomenon was mainly attributed to the refinement and increased complexity of the microstructure of the mortars due to the pozzolanic effect. Therefore, it was found that in certain types of environments, ichu ash can be an interesting tool to improve the durability of cements while reducing their environmental footprint and exploiting local resources.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2023
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/10261/335361
https://doi.org/10.1016/j.cemconcomp.2022.104608
url http://hdl.handle.net/10261/335361
https://doi.org/10.1016/j.cemconcomp.2022.104608
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.cemconcomp.2022.104608
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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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