Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/66714 |
Resumo: | In this paper a hybrid combination of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) was used for developing cementitious self-sensing composite with high mechanical, microstructural and durability performances. The mixture of these two nanoparticles with different 1D and 2D geometrical shapes can reduce the percolation threshold to a certain amount which can avoid agglomeration formation and also reinforce the microstructure due to percolation and electron quantum tunneling amplification. In this route, different concentrations of CNT + GNP were dispersed by Pluronic F-127 and <i>tributyl phosphate</i> (TBP) with 3 h sonication at 40 °C and incorporated into the cementitious mortar. Mechanical, microstructural, and durability of the reinforced mortar were investigated by various tests in different hydration periods (7, 28, and 90 days). Additionally, the piezoresistivity behavior of specimens was also evaluated by the four-probe method under flexural and compression cyclic loading. Results demonstrated that hybrid CNT + GNP can significantly improve mechanical and microstructural properties of cementitious composite by filler function, bridging cracks, and increasing hydration rate mechanisms. CNT + GNP intruded specimens also showed higher resistance against climatic cycle tests. Generally, the trend of all results demonstrates an optimal concentration of CNT (0.25%) + GNP (0.25%). Furthermore, increasing CNT + GNP concentration leads to sharp changes in electrical resistivity of reinforced specimens under small variation of strain achieving high gauge factor in both flexural and compression loading modes. |
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Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNPhybrid CNT/GNPself-sensingpiezoresistivitycementitious compositemechanicalmicrostructuraldurabilityhybrid CNTGNPEngenharia e Tecnologia::Engenharia CivilScience & TechnologyIn this paper a hybrid combination of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) was used for developing cementitious self-sensing composite with high mechanical, microstructural and durability performances. The mixture of these two nanoparticles with different 1D and 2D geometrical shapes can reduce the percolation threshold to a certain amount which can avoid agglomeration formation and also reinforce the microstructure due to percolation and electron quantum tunneling amplification. In this route, different concentrations of CNT + GNP were dispersed by Pluronic F-127 and <i>tributyl phosphate</i> (TBP) with 3 h sonication at 40 °C and incorporated into the cementitious mortar. Mechanical, microstructural, and durability of the reinforced mortar were investigated by various tests in different hydration periods (7, 28, and 90 days). Additionally, the piezoresistivity behavior of specimens was also evaluated by the four-probe method under flexural and compression cyclic loading. Results demonstrated that hybrid CNT + GNP can significantly improve mechanical and microstructural properties of cementitious composite by filler function, bridging cracks, and increasing hydration rate mechanisms. CNT + GNP intruded specimens also showed higher resistance against climatic cycle tests. Generally, the trend of all results demonstrates an optimal concentration of CNT (0.25%) + GNP (0.25%). Furthermore, increasing CNT + GNP concentration leads to sharp changes in electrical resistivity of reinforced specimens under small variation of strain achieving high gauge factor in both flexural and compression loading modes.This research was funded by European Commission-Shiff2Rail Program under the project“IN2TRACK2–826255-H2020-S2RJU-2018/H2020-S2RJU CFM-2018”Multidisciplinary Digital Publishing InstituteUniversidade do MinhoAbedi, MohammadmahdiFangueiro, RaúlCorreia, A. Gomes20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/66714engAbedi, M.; Fangueiro, R.; Gomes Correia, A. Ultra-Sensitive Affordable Cementitious Composite with High Mechanical and Microstructural Performances by Hybrid CNT/GNP. Materials 2020, 13, 3484. DOI: 10.3390/ma131634841996-194410.3390/ma13163484https://www.mdpi.com/1996-1944/13/16/3484info: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:RCAAP2023-07-21T12:26:18Zoai:repositorium.sdum.uminho.pt:1822/66714Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:20:41.381164Repositório 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 |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP |
title |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP |
spellingShingle |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP Abedi, Mohammadmahdi hybrid CNT/GNP self-sensing piezoresistivity cementitious composite mechanical microstructural durability hybrid CNT GNP Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP |
title_full |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP |
title_fullStr |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP |
title_full_unstemmed |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP |
title_sort |
Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP |
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 |
hybrid CNT/GNP self-sensing piezoresistivity cementitious composite mechanical microstructural durability hybrid CNT GNP Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
hybrid CNT/GNP self-sensing piezoresistivity cementitious composite mechanical microstructural durability hybrid CNT GNP Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
In this paper a hybrid combination of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) was used for developing cementitious self-sensing composite with high mechanical, microstructural and durability performances. The mixture of these two nanoparticles with different 1D and 2D geometrical shapes can reduce the percolation threshold to a certain amount which can avoid agglomeration formation and also reinforce the microstructure due to percolation and electron quantum tunneling amplification. In this route, different concentrations of CNT + GNP were dispersed by Pluronic F-127 and <i>tributyl phosphate</i> (TBP) with 3 h sonication at 40 °C and incorporated into the cementitious mortar. Mechanical, microstructural, and durability of the reinforced mortar were investigated by various tests in different hydration periods (7, 28, and 90 days). Additionally, the piezoresistivity behavior of specimens was also evaluated by the four-probe method under flexural and compression cyclic loading. Results demonstrated that hybrid CNT + GNP can significantly improve mechanical and microstructural properties of cementitious composite by filler function, bridging cracks, and increasing hydration rate mechanisms. CNT + GNP intruded specimens also showed higher resistance against climatic cycle tests. Generally, the trend of all results demonstrates an optimal concentration of CNT (0.25%) + GNP (0.25%). Furthermore, increasing CNT + GNP concentration leads to sharp changes in electrical resistivity of reinforced specimens under small variation of strain achieving high gauge factor in both flexural and compression loading modes. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 2020-01-01T00:00:00Z |
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 |
http://hdl.handle.net/1822/66714 |
url |
http://hdl.handle.net/1822/66714 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Abedi, M.; Fangueiro, R.; Gomes Correia, A. Ultra-Sensitive Affordable Cementitious Composite with High Mechanical and Microstructural Performances by Hybrid CNT/GNP. Materials 2020, 13, 3484. DOI: 10.3390/ma13163484 1996-1944 10.3390/ma13163484 https://www.mdpi.com/1996-1944/13/16/3484 |
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 |
Multidisciplinary Digital Publishing Institute |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
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 |
repository.mail.fl_str_mv |
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1799132670715756544 |