Concrete with triphasic conductive materials for self-monitoring of cracking development subjected to flexure

In this study, the macro steel fiber (SF), carbon fiber (CF) and nano carbon black (NCB) as triphasic conductive materials were added into concrete, in order to improve the conductivity and ductility of concrete. The influence of NCB, SF and CF on the post crack behavior and conductivity of concrete...

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Bibliographic Details
Published in:Composite structures 2016-03, Vol.138, p.184-191
Main Authors: Ding, Yining, Han, Zhibo, Zhang, Yulin, Aguiar, J.B.
Format: Article
Language:English
Subjects:
Bending
Carbon fibers
Composite structures
Concretes
Crack opening displacement
Cracks
Fibers
Flexing
Fractional change in resistance
Hybrid effect
Nano carbon black
Self-monitoring of concrete cracking
Steel fibers
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Summary:In this study, the macro steel fiber (SF), carbon fiber (CF) and nano carbon black (NCB) as triphasic conductive materials were added into concrete, in order to improve the conductivity and ductility of concrete. The influence of NCB, SF and CF on the post crack behavior and conductivity of concrete was explored. The effect of the triphasic conductive materials on the self-diagnosing ability to the load–deflection property and crack widening of conductive concrete member subjected to bending were investigated. The relationship between the fractional change in surface impedance (FCR) and the crack opening displacement (COD) of concrete beams with conductive materials has been established. The results illustrated that there is a linear relationship between COD and FCR.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2015.11.051