Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP
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: | http://hdl.handle.net/1822/73587 |
Resumo: | In this study, a self-sensing cementitious stabilized sand (CSS) was developed by the incorporation of hybrid carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) based on the piezoresistivity principle. For this purpose, different concentrations of CNTs and GNPs (1:1) were dispersed into the CSS, and specimens were fabricated using the standard compaction method with optimum moisture. The mechanical and microstructural, durability, and piezoresistivity performances, of CSS were investigated by various tests after 28 days of hydration. The results showed that the incorporation of 0.1%, 0.17%, and 0.24% CNT/GNP into the stabilized sand with 10% cement caused an increase in UCS of about 65%, 31%, and 14%, respectively, compared to plain CSS. An excessive increase in the CNM concentration beyond 0.24% to 0.34% reduced the UCS by around 13%. The addition of 0.1% CNMs as the optimum concentration increased the maximum dry density of the CSS as well as leading to optimum moisture reduction. Reinforcing CSS with the optimum concentration of CNT/GNP improved the hydration rate and durability of the specimens against severe climatic cycles, including freeze–thaw and wetting–drying. The addition of 0.1%, 0.17%, 0.24%, and 0.34% CNMs into the CSS resulted in gauge factors of about 123, 139, 151, and 173, respectively. However, the Raman and X-ray analysis showed the negative impacts of harsh climatic cycles on the electrical properties of the CNT/GNP and sensitivity of nano intruded CSS. |
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Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNPSelf-sensingStabilized sandCNT/GNPMechanicalMicrostructuralDurabilityPiezoresistivityCNTGNPScience & TechnologyIn this study, a self-sensing cementitious stabilized sand (CSS) was developed by the incorporation of hybrid carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) based on the piezoresistivity principle. For this purpose, different concentrations of CNTs and GNPs (1:1) were dispersed into the CSS, and specimens were fabricated using the standard compaction method with optimum moisture. The mechanical and microstructural, durability, and piezoresistivity performances, of CSS were investigated by various tests after 28 days of hydration. The results showed that the incorporation of 0.1%, 0.17%, and 0.24% CNT/GNP into the stabilized sand with 10% cement caused an increase in UCS of about 65%, 31%, and 14%, respectively, compared to plain CSS. An excessive increase in the CNM concentration beyond 0.24% to 0.34% reduced the UCS by around 13%. The addition of 0.1% CNMs as the optimum concentration increased the maximum dry density of the CSS as well as leading to optimum moisture reduction. Reinforcing CSS with the optimum concentration of CNT/GNP improved the hydration rate and durability of the specimens against severe climatic cycles, including freeze–thaw and wetting–drying. The addition of 0.1%, 0.17%, 0.24%, and 0.34% CNMs into the CSS resulted in gauge factors of about 123, 139, 151, and 173, respectively. However, the Raman and X-ray analysis showed the negative impacts of harsh climatic cycles on the electrical properties of the CNT/GNP and sensitivity of nano intruded CSS.This research was funded by European Commission-Shiff2Rail Program under the project “IN2TRACK2–826255-H2020-S2RJU-2018/H2020-S2RJU CFM-2018”. It was also partly financed by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Engineering Structures (ISISE), under reference UIDB/04029/2020, as well as under the R&D Unit Centre for Textile Science and Technology (2C2T).Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoAbedi, MohammadmahdiFangueiro, RaúlCorreia, A. Gomes2021-04-092021-04-09T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/73587engAbedi, M.; Fangueiro, R.; Correia, A.G. Development of a Novel Multifunctional Cementitious-Based Geocomposite by the Contribution of CNT and GNP. Nanomaterials 2021, 11, 961. https://doi.org/10.3390/nano110409612079-499110.3390/nano11040961https://www.mdpi.com/2079-4991/11/4/961info: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:RCAAP2023-07-21T12:13:14Zoai:repositorium.sdum.uminho.pt:1822/73587Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:05:16.925304Repositório 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 |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP |
title |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP |
spellingShingle |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP Abedi, Mohammadmahdi Self-sensing Stabilized sand CNT/GNP Mechanical Microstructural Durability Piezoresistivity CNT GNP Science & Technology |
title_short |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP |
title_full |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP |
title_fullStr |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP |
title_full_unstemmed |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and GNP |
title_sort |
Development of a novel multifunctional cementitious-based geocomposite by the contribution of CNT and 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 |
Self-sensing Stabilized sand CNT/GNP Mechanical Microstructural Durability Piezoresistivity CNT GNP Science & Technology |
topic |
Self-sensing Stabilized sand CNT/GNP Mechanical Microstructural Durability Piezoresistivity CNT GNP Science & Technology |
description |
In this study, a self-sensing cementitious stabilized sand (CSS) was developed by the incorporation of hybrid carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) based on the piezoresistivity principle. For this purpose, different concentrations of CNTs and GNPs (1:1) were dispersed into the CSS, and specimens were fabricated using the standard compaction method with optimum moisture. The mechanical and microstructural, durability, and piezoresistivity performances, of CSS were investigated by various tests after 28 days of hydration. The results showed that the incorporation of 0.1%, 0.17%, and 0.24% CNT/GNP into the stabilized sand with 10% cement caused an increase in UCS of about 65%, 31%, and 14%, respectively, compared to plain CSS. An excessive increase in the CNM concentration beyond 0.24% to 0.34% reduced the UCS by around 13%. The addition of 0.1% CNMs as the optimum concentration increased the maximum dry density of the CSS as well as leading to optimum moisture reduction. Reinforcing CSS with the optimum concentration of CNT/GNP improved the hydration rate and durability of the specimens against severe climatic cycles, including freeze–thaw and wetting–drying. The addition of 0.1%, 0.17%, 0.24%, and 0.34% CNMs into the CSS resulted in gauge factors of about 123, 139, 151, and 173, respectively. However, the Raman and X-ray analysis showed the negative impacts of harsh climatic cycles on the electrical properties of the CNT/GNP and sensitivity of nano intruded CSS. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-04-09 2021-04-09T00:00:00Z |
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/1822/73587 |
url |
http://hdl.handle.net/1822/73587 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Abedi, M.; Fangueiro, R.; Correia, A.G. Development of a Novel Multifunctional Cementitious-Based Geocomposite by the Contribution of CNT and GNP. Nanomaterials 2021, 11, 961. https://doi.org/10.3390/nano11040961 2079-4991 10.3390/nano11040961 https://www.mdpi.com/2079-4991/11/4/961 |
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 (MDPI) |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (MDPI) |
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 |
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 |
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1799132465208492032 |