The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites
Due to its ability to improve mechanical properties when incorporated into cement, graphene oxide (GO) has received extensive attention from scholars. Graphene oxide is also a filler that improves the self-sensing properties of cement composites (CCs). However, existing studies have not focused suff...
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| Format: | Article |
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MDPI AG
2024-03-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/7/2819 |
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| author | Zhengxian Liang Haiting Xia Feng Yan Kaomin Zhang Rongxin Guo |
| author_facet | Zhengxian Liang Haiting Xia Feng Yan Kaomin Zhang Rongxin Guo |
| author_sort | Zhengxian Liang |
| collection | DOAJ |
| description | Due to its ability to improve mechanical properties when incorporated into cement, graphene oxide (GO) has received extensive attention from scholars. Graphene oxide is also a filler that improves the self-sensing properties of cement composites (CCs). However, existing studies have not focused sufficient attention on the electric conductivity of cement composites filled with graphene oxide (GO/CCs) and their mechanisms, especially polarization. This study examines the effects of water content and temperature on the electrical conductivity of GO/CCs. GO/CC polarization phenomena are analyzed to reveal the conductive mechanism. The results show that water has a significant influence on the electrical conductivity of GO/CCs. With increasing water loss, the electrical resistivity of GO/CCs increases by four orders of magnitude. For the same water content, a 0.1% GO concentration significantly decreases the resistivity of GO/CCs. Temperature can significantly enhance the current intensity of GO/CCs; furthermore, there is a quadratic relationship between current intensity and temperature. The conductive mechanism of GO/CCs is attributed to the interaction between ionic conductivity and electronic conductivity. |
| first_indexed | 2024-04-24T10:50:13Z |
| format | Article |
| id | doaj.art-acfaa78f2c0a4b30b86b316abd33b66a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-24T10:50:13Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-acfaa78f2c0a4b30b86b316abd33b66a2024-04-12T13:14:54ZengMDPI AGApplied Sciences2076-34172024-03-01147281910.3390/app14072819The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious CompositesZhengxian Liang0Haiting Xia1Feng Yan2Kaomin Zhang3Rongxin Guo4Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Aviation and Aeronautics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Aviation and Aeronautics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaDue to its ability to improve mechanical properties when incorporated into cement, graphene oxide (GO) has received extensive attention from scholars. Graphene oxide is also a filler that improves the self-sensing properties of cement composites (CCs). However, existing studies have not focused sufficient attention on the electric conductivity of cement composites filled with graphene oxide (GO/CCs) and their mechanisms, especially polarization. This study examines the effects of water content and temperature on the electrical conductivity of GO/CCs. GO/CC polarization phenomena are analyzed to reveal the conductive mechanism. The results show that water has a significant influence on the electrical conductivity of GO/CCs. With increasing water loss, the electrical resistivity of GO/CCs increases by four orders of magnitude. For the same water content, a 0.1% GO concentration significantly decreases the resistivity of GO/CCs. Temperature can significantly enhance the current intensity of GO/CCs; furthermore, there is a quadratic relationship between current intensity and temperature. The conductive mechanism of GO/CCs is attributed to the interaction between ionic conductivity and electronic conductivity.https://www.mdpi.com/2076-3417/14/7/2819cement compositesgraphene oxideelectrical resistivitypolarization |
| spellingShingle | Zhengxian Liang Haiting Xia Feng Yan Kaomin Zhang Rongxin Guo The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites Applied Sciences cement composites graphene oxide electrical resistivity polarization |
| title | The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites |
| title_full | The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites |
| title_fullStr | The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites |
| title_full_unstemmed | The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites |
| title_short | The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites |
| title_sort | effect of moisture content on the electrical properties of graphene oxide cementitious composites |
| topic | cement composites graphene oxide electrical resistivity polarization |
| url | https://www.mdpi.com/2076-3417/14/7/2819 |
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