全固态参比电极的制备及其在钢筋腐蚀监测中的应用

A novel all solid-state reference electrode applied in civil engineering structure health monitoring

钢混结构中钢筋的腐蚀是影响结构耐久性的重要因素，腐蚀可以造成钢筋本身力学性能以及钢筋与混凝土粘结性能的劣化，这将严重影响钢混结构的承载力及服役寿命。基于电化学方法进行腐蚀监测的腐蚀传感器中通常需要应用参比电极为监测方法提供研究电极的电位，然而传统的参比电极由于其使用寿命有限从而限制了其在实际工程中的应用。制备了一种新的能够满足混凝土中钢筋腐蚀监测用的全固态参比电极。在水泥砂浆中应用动电位扫描的方法对钢筋的腐蚀进行了研究．研究结果表明，ASSRE的电位稳定，应用全固态参比电极能够得到理想的动电位扫描曲线。

Corrosion is the most important factor which affects the mechanical property of RC. It will seriously influence the structure＇s bearing capacity and service life. The reference electrode is used to monitor the corrosion rate of the steel bar. But the service life often prevents it using in the field. In this paper, a novel all solid state reference electrode which can be embedded in concrete has been prepared. Potentialdynamc scan method has been used to monitor the corrosion rate of steel bar in cement mortar. According to the results we can see that the potential of the reference electrode is stable. By the reference electrode, we can get perfect scanning plots.