Electrical resistivity of cement-based materials through ion conduction mechanisms for enhancing resilient infrastructures
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Article number | 105792 |
Journal / Publication | Cement and Concrete Composites |
Volume | 154 |
Online published | 8 Oct 2024 |
Publication status | Published - Nov 2024 |
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Abstract
Cement-based materials (CBM) in humid environments, influenced by their inherent defects and the presence of pore solution, exhibit poor electrical insulation performance. Low electrical resistivity of cement-based materials poses a threat to the safety of resilient infrastructures, shortens the lifespan of materials, and increases the costs of maintenance and repair. In this work, we first elucidate two primary mechanisms for enhancing electrical resistivity: (1) inhibition of ion electromigration and (2) disruption of conduction paths. We then systematically summarize and discuss 16 potential methods for improving their electrical resistivity based on these mechanisms. It is indicated that among these 16 methods, early carbonation curing, the addition of high-activity mineral admixtures, and surface hydrophobic modification are particularly effective approaches. The combination of two or more methods can simultaneously exert their functions, thus maximizing the overall effectiveness. Future work is outlined with the aim of meeting the growing demand for cement-based materials with high electrical resistivity in the construction of resilient infrastructures. © 2024 Elsevier Ltd.
Research Area(s)
- Cement-based materials, Conduction paths, Electrical resistivity, Enhancement technology, Ion electromigration
Citation Format(s)
Electrical resistivity of cement-based materials through ion conduction mechanisms for enhancing resilient infrastructures. / Li, Yingjie; Zeng, Xiaohui; Yin, Binbin et al.
In: Cement and Concrete Composites, Vol. 154, 105792, 11.2024.
In: Cement and Concrete Composites, Vol. 154, 105792, 11.2024.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review