The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites
Source abstract
Abstract
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.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Smart Materials for Construction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China
Yunnan Key Laboratory of Disaster Reduction in Civil Engineering, Kunming 650500, China
International Joint Laboratory for Green Construction and Intelligent Maintenance of Yunnan Province, Kunming 650500, China
Faculty of Civil Aviation and Aeronautics, Kunming University of Science and Technology, Kunming 650500, China
Funding
National Natural Science Foundation of China
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Show source-provided references
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