国外混凝土结构耐久性监测传感器在国内工程中的适用性*

采用动电位极化和线性极化技术研究了国内普通钢筋、阳极梯监测传感器所用普通钢筋和ECI-2传感器所用普通钢筋的点蚀临界浓度和点蚀后的腐蚀速率。研究结果表明：ECI-2传感器所用普通钢筋的点蚀临界氯离子浓度与国内普通钢筋相似，点蚀速率略小于国内普通钢筋；阳极梯传感器所用的普通钢筋的点蚀临界氯离子浓度要高于国内普通钢筋，点蚀速率要明显低于国内普通钢筋。因此，在用这两种传感器进行国内工程耐久性监测时应对监测结果进行修正。

Applicability of overseas monitoring sensors in domestic concrete structures

The critical chloride ions concentration of pitting corrosion and pitting corrosion rate of domestic rebar,anode ladders sensor rebar,and ECI-2 sensor rebar are investigated by potentiodynamic polarization and liner polarization respectively. The results show that the domestic rebar and ECI-2 sensor rebar have a similar critical chloride ions concentration of pitting corrosion and different pitting corrosion rates. However,the critical chloride ions concentration of pitting corrosion and pitting corrosion rate for the anode ladders sensor rebar are different from that of domestic rebar. Therefore,the monitoring results for the two sensors should be modified when they are used in domestic engineering to monitor its durability.