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
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