Ultra-sensitive affordable cementitious composite with high mechanical and microstructural performances by hybrid CNT/GNP

Detalhes bibliográficos
Autor(a) principal: Abedi, Mohammadmahdi
Data de Publicação: 2020
Outros Autores: Fangueiro, Raúl, Correia, A. Gomes
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.
id RCAP_164023f690e1cac372b97ce2eacf792a
oai_identifier_str oai:repositorium.sdum.uminho.pt:1822/66714
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling 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
_version_ 1799132670715756544