Application of Fe-C Coated LPFG Sensor for Early Stage Corrosion Monitoring of Steel Bar in RC Structures
Fe-C coated long period fiber grating (LPFG) sensor was employed to monitor the corrosion-induced mass loss of steel bar in 3.5 wt% NaCl solution and steel bar in mortar cylinder. A two-stage process of the change in resonant wavelength as a function of the corrosion-induced mass loss of steel bar was observed. The LPFG sensor can effectively monitor steel bar corrosion loss in 3.5 wt% NaCl solution for 14 h with a sensitivity of 0.124 mg/nm change of the resonant wavelength, and in mortar cylinder for 14 days with a sensitivity of 0.405 mg/nm change of the resonant wavelength, respectively.
F. Tang et al., "Application of Fe-C Coated LPFG Sensor for Early Stage Corrosion Monitoring of Steel Bar in RC Structures," Construction and Building Materials, vol. 175, pp. 14 - 25, Elsevier, Jun 2018.
The definitive version is available at https://doi.org/10.1016/j.conbuildmat.2018.04.187
Civil, Architectural and Environmental Engineering
INSPIRE - University Transportation Center
Keywords and Phrases
Bars (metal); Coatings; Cylinders (shapes); Diffraction gratings; Electrochemical corrosion; Mortar; Sodium alloys; Sodium chloride; Steel fibers; 3.5 wt% NaCl solution; Corrosion loss; Corrosion monitoring; Long period fiber grating; Long Period Gratings; Resonance wavelengths; Resonant wavelengths; Two-stage process; Steel corrosion; EIS; Long-period grating; LPR
International Standard Serial Number (ISSN)
Article - Journal
© 2018 Elsevier, All rights reserved.
01 Jun 2018
The authors gratefully acknowledge the financial support provided by the Fundamental Research Funds for the Central Universities of China (DUT17RC(3)076) and the US National Science Foundation (CMMI-1235202).