Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/78524 |
Resumo: | In this study, the effects of multiscale conductive carbon fillers, including carbon nanotubes (CNTs), graphene nanoplatelets (GNPs), and carbon fibres (CFs), on the mechanical and microstructural properties, durability, and piezoresistivity of cementitious stabilised sand (CSS) were investigated. In this route, the surface of the CFs was modified via an oxidation process to improve their interfacial performance and dispersion. An optimum amount of hybrid CNT/GNP with different concentrations of CFs was incorporated into the CSS, and specimens were fabricated using the standard compaction method at the optimum water content. The interfacial properties of the CFs were studied by performing pullout tests and several chemical analyses. The variations in the mechanical and microstructural, durability, and piezoresistivity of the CSS, were investigated by various tests. In addition, the status of the specimens in terms of residual strain and damages was identified by the digital image correlation technique. The results showed a considerable improvement in the interfacial properties of the modified CFs in terms of physical and chemical bonding with the cement matrix. In addition, a combination of 0.17% CNT/GNP (1:1, by weight of dry sand) with 0.75% CF can improve the maximum dry density and mechanical properties, as well as the ductility and durability of the CSS. In addition, using multiscale conductive fillers resulted in a considerable enhancement in the electrical conductivity and piezoresistivity of the CSS. The outcomes indicate the immense potential of CNT/GNP/CF for the development of a sustainable self-sensing cementitious geocomposite. |
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Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocompositeCementitious stabilised sandGrapheneCarbon nanotubesSelf-sensingMultiscalecarbonnanotubesCementitious stabilised sand: graphene: carbon nanotubes: self-sensing: multiscaleScience & TechnologyIn this study, the effects of multiscale conductive carbon fillers, including carbon nanotubes (CNTs), graphene nanoplatelets (GNPs), and carbon fibres (CFs), on the mechanical and microstructural properties, durability, and piezoresistivity of cementitious stabilised sand (CSS) were investigated. In this route, the surface of the CFs was modified via an oxidation process to improve their interfacial performance and dispersion. An optimum amount of hybrid CNT/GNP with different concentrations of CFs was incorporated into the CSS, and specimens were fabricated using the standard compaction method at the optimum water content. The interfacial properties of the CFs were studied by performing pullout tests and several chemical analyses. The variations in the mechanical and microstructural, durability, and piezoresistivity of the CSS, were investigated by various tests. In addition, the status of the specimens in terms of residual strain and damages was identified by the digital image correlation technique. The results showed a considerable improvement in the interfacial properties of the modified CFs in terms of physical and chemical bonding with the cement matrix. In addition, a combination of 0.17% CNT/GNP (1:1, by weight of dry sand) with 0.75% CF can improve the maximum dry density and mechanical properties, as well as the ductility and durability of the CSS. In addition, using multiscale conductive fillers resulted in a considerable enhancement in the electrical conductivity and piezoresistivity of the CSS. The outcomes indicate the immense potential of CNT/GNP/CF for the development of a sustainable self-sensing cementitious geocomposite.This work was supported by the European Commission-Shift2Rail Program under the project “IN2TRACK3, H2020–S2RJU-CFM-2020, S2R-CFMIP3- 01–2020”. Furthermore, it is partly financed by FCT/ MCTES through national funds (PIDDAC) under the R&D Unit of the Institute for Sustainability and Innovation in Engineering Structures (ISISE), under reference nº. 101012456, as well as under the R&D Unit of the Centre for Textile Science and Technology (2C2T).ElsevierUniversidade do MinhoAbedi, MohammadmahdiFangueiro, RaúlCorreia, A. Gomes2021-112021-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/78524eng2352-710210.1016/j.jobe.2021.103171https://www.sciencedirect.com/science/article/pii/S2352710221010299#!info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:00:41Zoai:repositorium.sdum.uminho.pt:1822/78524Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:50:33.465540Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite |
title |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite |
spellingShingle |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite Abedi, Mohammadmahdi Cementitious stabilised sand Graphene Carbon nanotubes Self-sensing Multiscale carbon nanotubes Cementitious stabilised sand: graphene: carbon nanotubes: self-sensing: multiscale Science & Technology |
title_short |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite |
title_full |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite |
title_fullStr |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite |
title_full_unstemmed |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite |
title_sort |
Effects of multiscale carbon-based conductive fillers on the performances of a self-sensing cementitious geocomposite |
author |
Abedi, Mohammadmahdi |
author_facet |
Abedi, Mohammadmahdi Fangueiro, Raúl Correia, A. Gomes |
author_role |
author |
author2 |
Fangueiro, Raúl Correia, A. Gomes |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Abedi, Mohammadmahdi Fangueiro, Raúl Correia, A. Gomes |
dc.subject.por.fl_str_mv |
Cementitious stabilised sand Graphene Carbon nanotubes Self-sensing Multiscale carbon nanotubes Cementitious stabilised sand: graphene: carbon nanotubes: self-sensing: multiscale Science & Technology |
topic |
Cementitious stabilised sand Graphene Carbon nanotubes Self-sensing Multiscale carbon nanotubes Cementitious stabilised sand: graphene: carbon nanotubes: self-sensing: multiscale Science & Technology |
description |
In this study, the effects of multiscale conductive carbon fillers, including carbon nanotubes (CNTs), graphene nanoplatelets (GNPs), and carbon fibres (CFs), on the mechanical and microstructural properties, durability, and piezoresistivity of cementitious stabilised sand (CSS) were investigated. In this route, the surface of the CFs was modified via an oxidation process to improve their interfacial performance and dispersion. An optimum amount of hybrid CNT/GNP with different concentrations of CFs was incorporated into the CSS, and specimens were fabricated using the standard compaction method at the optimum water content. The interfacial properties of the CFs were studied by performing pullout tests and several chemical analyses. The variations in the mechanical and microstructural, durability, and piezoresistivity of the CSS, were investigated by various tests. In addition, the status of the specimens in terms of residual strain and damages was identified by the digital image correlation technique. The results showed a considerable improvement in the interfacial properties of the modified CFs in terms of physical and chemical bonding with the cement matrix. In addition, a combination of 0.17% CNT/GNP (1:1, by weight of dry sand) with 0.75% CF can improve the maximum dry density and mechanical properties, as well as the ductility and durability of the CSS. In addition, using multiscale conductive fillers resulted in a considerable enhancement in the electrical conductivity and piezoresistivity of the CSS. The outcomes indicate the immense potential of CNT/GNP/CF for the development of a sustainable self-sensing cementitious geocomposite. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-11 2021-11-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/78524 |
url |
https://hdl.handle.net/1822/78524 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2352-7102 10.1016/j.jobe.2021.103171 https://www.sciencedirect.com/science/article/pii/S2352710221010299#! |
dc.rights.driver.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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799132274086641664 |