98 31

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
Files in This Item:
Electrical properties of cement-based composites with carbon nanotubes, graphene, and graphite nanofibers.pdfDownload
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE