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Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar

This study analyzed the influence of carbon nanotubes (CNTs) on the carbonation conductive cementitious composites. Two powder types of CNT, multi-walled and single-wall CNTs, were employed to give the cement mortar the conductivity, and four tests including the accelerated carbonation, compressive...

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Autores principales: Lee, Gun-Cheol, Kim, Youngmin, Seo, Soo-Yeon, Yun, Hyun-Do, Hong, Seongwon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8587692/
https://www.ncbi.nlm.nih.gov/pubmed/34772250
http://dx.doi.org/10.3390/ma14216721
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author Lee, Gun-Cheol
Kim, Youngmin
Seo, Soo-Yeon
Yun, Hyun-Do
Hong, Seongwon
author_facet Lee, Gun-Cheol
Kim, Youngmin
Seo, Soo-Yeon
Yun, Hyun-Do
Hong, Seongwon
author_sort Lee, Gun-Cheol
collection PubMed
description This study analyzed the influence of carbon nanotubes (CNTs) on the carbonation conductive cementitious composites. Two powder types of CNT, multi-walled and single-wall CNTs, were employed to give the cement mortar the conductivity, and four tests including the accelerated carbonation, compressive and flexural strength, electrical resistance, and porosity tests were carried out. To intentionally accelerate the carbonation, the prismatic specimens of conductive cement composites were fabricated and stored in the controlled environmental chamber at a constant temperature of 20 ± 2 °C, constant relative humidity of 60 ± 5%, and carbon dioxide (CO(2)) concentration of 5% for 12 weeks. It was observed that carbonation resulted in only chemical damage so that there was no change in the electrical resistance value of conductive cementitious mortar that had undergone a carbonation attack.
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spelling pubmed-85876922021-11-13 Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar Lee, Gun-Cheol Kim, Youngmin Seo, Soo-Yeon Yun, Hyun-Do Hong, Seongwon Materials (Basel) Article This study analyzed the influence of carbon nanotubes (CNTs) on the carbonation conductive cementitious composites. Two powder types of CNT, multi-walled and single-wall CNTs, were employed to give the cement mortar the conductivity, and four tests including the accelerated carbonation, compressive and flexural strength, electrical resistance, and porosity tests were carried out. To intentionally accelerate the carbonation, the prismatic specimens of conductive cement composites were fabricated and stored in the controlled environmental chamber at a constant temperature of 20 ± 2 °C, constant relative humidity of 60 ± 5%, and carbon dioxide (CO(2)) concentration of 5% for 12 weeks. It was observed that carbonation resulted in only chemical damage so that there was no change in the electrical resistance value of conductive cementitious mortar that had undergone a carbonation attack. MDPI 2021-11-08 /pmc/articles/PMC8587692/ /pubmed/34772250 http://dx.doi.org/10.3390/ma14216721 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lee, Gun-Cheol
Kim, Youngmin
Seo, Soo-Yeon
Yun, Hyun-Do
Hong, Seongwon
Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar
title Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar
title_full Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar
title_fullStr Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar
title_full_unstemmed Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar
title_short Influence of CNT Incorporation on the Carbonation of Conductive Cement Mortar
title_sort influence of cnt incorporation on the carbonation of conductive cement mortar
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8587692/
https://www.ncbi.nlm.nih.gov/pubmed/34772250
http://dx.doi.org/10.3390/ma14216721
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