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Proceedings Paper

Rebar corrosion monitoring in concrete structure under salt water enviroment using fiber Bragg grating
Author(s): Yuheng Pan; Tiegen Liu; Junfeng Jiang; Kun Liu; Shuang Wang; Pan He; Jinlin Yan
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Paper Abstract

Monitoring corrosion of steel reinforcing bars is critical for the durability and safety of reinforced concrete structures. Corrosion sensors based on fiber optic have proved to exhibit meaningful benefits compared with the conventional electric ones. In recent years, Fiber Bragg Grating (FBG) has been used as a new kind of sensing element in an attempt to directly monitor the corrosion in concrete structure due to its remarkable advantages. In this paper, we present a novel kind of FBG based rebar corrosion monitoring sensor. The rebar corrosion is detected by volume expansion of the corroded rebar by transferring it to the axial strain of FBG when concrete structure is soaked in salt water. An accelerated salt water corrosion test was performed. The experiment results showed the corrosion can be monitored effectively and the corrosion rate is obtained by volume loss rate of rebar.

Paper Details

Date Published: 10 August 2015
PDF: 7 pages
Proc. SPIE 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 962012 (10 August 2015); doi: 10.1117/12.2193226
Show Author Affiliations
Yuheng Pan, Tianjin Univ. (China)
Tianjin Chenjian Univ. (China)
Tiegen Liu, Tianjin Univ. (China)
Junfeng Jiang, Tianjin Univ. (China)
Kun Liu, Tianjin Univ. (China)
Shuang Wang, Tianjin Univ. (China)
Pan He, Tianjin Univ. (China)
Jinlin Yan, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 9620:
2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Xuping Zhang; David Erickson; Xudong Fan; Zhongping Chen, Editor(s)

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