Details

Autor(en) / Beteiligte

• Tang, Fujian
• Chen, Yizheng
• Li, Zhaochao
• Tang, Yan
• Chen, Genda

Titel

Application of Fe-C coated LPFG sensor for early stage corrosion monitoring of steel bar in RC structures

Ist Teil von

• Construction & building materials, 2018-06, Vol.175, p.14-25

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2018

Link zum Volltext

Quelle

ScienceDirect Journals (5 years ago - present)

Beschreibungen/Notizen

• •Fe-C coated LPFG was applied to monitor steel bar corrosion.•Fe-C coated LPFG can monitor steel bar corrosion for 14 h in NaCl solution.•Fe-C coated LPFG can monitor steel bar corrosion in mortar for 14 days.•Fe-C coated LPFG demonstrate high sensitivity for steel corrosion loss measurement. 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.