Corrosion monitoring of reinforcing steel in RC beam by an intelligent corrosion sensor

Guofu Qiao; Yi Hong; Jinping Ou

doi:10.1117/12.837899

20 October 2009 Corrosion monitoring of reinforcing steel in RC beam by an intelligent corrosion sensor

Guofu Qiao, Yi Hong, Jinping Ou

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74930C (2009) https://doi.org/10.1117/12.837899
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

Health degradation by corrosion of steel in civil engineering is a persistent problem. Structural health monitoring techniques can lead to improve estimates of structural safety and serviceability effectively. The corrosion sensor and the monitoring method have been explored and applied in RC beam's corrosion monitoring. A novel five-electrode corrosion sensor has been developed to provide the platform for corrosion monitoring of the steel bar in concrete beam by electrochemical method. Half-cell potential of the RC beam has been measured to identify the corrosion statues of the steel bar qualitatively. Galvanostatic step method has been used to excite the steel-concrete system and the transient response of the system has been obtained. The data of the transient response has been analyzed by segmented method. Some important electrochemical parameters have been extracted by this method. The results show it is effectively to analyze the data of the transient response by segmented method.

Citation Download Citation

Guofu Qiao, Yi Hong, and Jinping Ou "Corrosion monitoring of reinforcing steel in RC beam by an intelligent corrosion sensor", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74930C (20 October 2009); https://doi.org/10.1117/12.837899

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