Electrical properties of cement-based composites with carbon nanotubes, graphene, and graphite nanofibers
- Title
- Electrical properties of cement-based composites with carbon nanotubes, graphene, and graphite nanofibers
- Author
- 류두열
- Keywords
- cement composites; nanomaterials; electrical resistivity; gauge factor; self-sensing capacity
- Issue Date
- 2017-05
- Publisher
- MDPI
- Citation
- SENSORS, v. 17, no. 5, Article no. 1064
- Abstract
- This study was conducted to evaluate the effect of the carbon-based nanomaterial type on the electrical properties of cement paste. Three different nanomaterials, multi-walled carbon nanotubes (MWCNTs), graphite nanofibers (GNFs), and graphene (G), were incorporated into the cement paste at a volume fraction of 1%. The self-sensing capacity of the cement composites was also investigated by comparing the compressive stress/strain behaviors by evaluating the fractional change of resistivity (FCR). The electrical resistivity of the plain cement paste was slightly reduced by adding 1 vol % GNFs and G, whereas a significant decrease of the resistivity was achieved by adding 1 vol % MWCNTs. At an identical volume fraction of 1%, the composites with MWCNTs provided the best self-sensing capacity with insignificant noise, followed by the composites containing GNFs and G. Therefore, the addition of MWCNTs was considered to be the most effective to improve the self-sensing capacity of the cement paste. Finally, the composites with 1 vol % MWCNTs exhibited a gauge factor of 113.2, which is much higher than commercially available strain gauges.
- URI
- https://www.mdpi.com/1424-8220/17/5/1064https://repository.hanyang.ac.kr/handle/20.500.11754/114086
- ISSN
- 1424-8220
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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