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论文类型：会议论文

发表时间：2009-07-08

收录刊物：EI、CPCI-S、SCIE、Scopus

卷号：7493

关键字：Reinforcing Steel; Corrosion Monitoring; Corrosion Sensor; Electrochemical Method

摘要：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.