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Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers

This study investigates the electrical heating (also known as Joule heating) characteristics of cementitious composites containing multi-walled carbon nanotubes (CNT) and carbon fibers (CF) as electrically conductive media in an attempt to develop an eco-friendly and sustainable solution to snow and...

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Autores principales: Salim, Muhammad Usama, Nishat, Farzana Mustari, Oh, Taekgeun, Yoo, Doo-Yeol, Song, Yooseob, Ozbakkaloglu, Togay, Yeon, Jung Heum
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9692820/
https://www.ncbi.nlm.nih.gov/pubmed/36431541
http://dx.doi.org/10.3390/ma15228055
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author Salim, Muhammad Usama
Nishat, Farzana Mustari
Oh, Taekgeun
Yoo, Doo-Yeol
Song, Yooseob
Ozbakkaloglu, Togay
Yeon, Jung Heum
author_facet Salim, Muhammad Usama
Nishat, Farzana Mustari
Oh, Taekgeun
Yoo, Doo-Yeol
Song, Yooseob
Ozbakkaloglu, Togay
Yeon, Jung Heum
author_sort Salim, Muhammad Usama
collection PubMed
description This study investigates the electrical heating (also known as Joule heating) characteristics of cementitious composites containing multi-walled carbon nanotubes (CNT) and carbon fibers (CF) as electrically conductive media in an attempt to develop an eco-friendly and sustainable solution to snow and ice removal on roadway pavements during the winter season. Various dosages of CNT and CF between 0 and 1.0% (by weight of cement) were tested to find the optimum mixture proportions that yield high-energy and efficient electrical-heating performance with superior mechanical properties. The electrical properties were characterized by measuring the electrical resistivity and temperature rise when attached to a power source. Furthermore, this study examined how the crack width affects the electrical resistivity of cementitious composites containing CNT and/or CF. Compressive and flexural strengths were also measured at different ages of 1, 3, 7, and 28 days to identify how the additions of CNT and CF affect the mechanical properties. Results have shown that adding CF in combination with CNT substantially reduces the electrical resistivity and, in turn, improves the heating performance, as CFs further densify the electrically conductive network in the hydrated matrix; adding either CNT or CF alone was not an effective option to enhance the electrical characteristics. The findings of this study are expected to provide essential information for the design and construction of an electrically heated concrete pavement system with promoted energy efficiency, which will offer a promising solution to enhance winter road maintenance, improve public safety, and provide substantial social cost savings.
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spelling pubmed-96928202022-11-26 Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers Salim, Muhammad Usama Nishat, Farzana Mustari Oh, Taekgeun Yoo, Doo-Yeol Song, Yooseob Ozbakkaloglu, Togay Yeon, Jung Heum Materials (Basel) Article This study investigates the electrical heating (also known as Joule heating) characteristics of cementitious composites containing multi-walled carbon nanotubes (CNT) and carbon fibers (CF) as electrically conductive media in an attempt to develop an eco-friendly and sustainable solution to snow and ice removal on roadway pavements during the winter season. Various dosages of CNT and CF between 0 and 1.0% (by weight of cement) were tested to find the optimum mixture proportions that yield high-energy and efficient electrical-heating performance with superior mechanical properties. The electrical properties were characterized by measuring the electrical resistivity and temperature rise when attached to a power source. Furthermore, this study examined how the crack width affects the electrical resistivity of cementitious composites containing CNT and/or CF. Compressive and flexural strengths were also measured at different ages of 1, 3, 7, and 28 days to identify how the additions of CNT and CF affect the mechanical properties. Results have shown that adding CF in combination with CNT substantially reduces the electrical resistivity and, in turn, improves the heating performance, as CFs further densify the electrically conductive network in the hydrated matrix; adding either CNT or CF alone was not an effective option to enhance the electrical characteristics. The findings of this study are expected to provide essential information for the design and construction of an electrically heated concrete pavement system with promoted energy efficiency, which will offer a promising solution to enhance winter road maintenance, improve public safety, and provide substantial social cost savings. MDPI 2022-11-15 /pmc/articles/PMC9692820/ /pubmed/36431541 http://dx.doi.org/10.3390/ma15228055 Text en © 2022 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
Salim, Muhammad Usama
Nishat, Farzana Mustari
Oh, Taekgeun
Yoo, Doo-Yeol
Song, Yooseob
Ozbakkaloglu, Togay
Yeon, Jung Heum
Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers
title Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers
title_full Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers
title_fullStr Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers
title_full_unstemmed Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers
title_short Electrical Resistivity and Joule Heating Characteristics of Cementitious Composites Incorporating Multi-Walled Carbon Nanotubes and Carbon Fibers
title_sort electrical resistivity and joule heating characteristics of cementitious composites incorporating multi-walled carbon nanotubes and carbon fibers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9692820/
https://www.ncbi.nlm.nih.gov/pubmed/36431541
http://dx.doi.org/10.3390/ma15228055
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