Online from: 1981
Subject Area: Electrical & Electronic Engineering
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|Title:||Preparation and characterization of the solid-state Ag/AgCl reference electrode for RC structures|
|Author(s):||Guofu Qiao, (School of Civil Engineering, Harbin Institute of Technology, Harbin, China), Huigang Xiao, (School of Civil Engineering, Harbin Institute of Technology, Harbin, China), Yi Hong, (Center for Composite Material and Structure, Harbin Insititute of Technology, Harbin, China), Yuelan Qiu, (School of Civil Engineering, Harbin Institute of Technology, Harbin, China)|
|Citation:||Guofu Qiao, Huigang Xiao, Yi Hong, Yuelan Qiu, (2012) "Preparation and characterization of the solid-state Ag/AgCl reference electrode for RC structures", Sensor Review, Vol. 32 Iss: 2, pp.118 - 122|
|Keywords:||Corrosion, Corrosion monitoring, Corrosion sensors, Reference electrode, Reinforced concrete, Sensors, Structures|
|Article type:||Research paper|
|DOI:||10.1108/02602281211209400 (Permanent URL)|
|Publisher:||Emerald Group Publishing Limited|
|Acknowledgements:||This research is supported in part by grants from NSFC (Project nos: 51008098 and 50538020) and the Research Innovation Fund of HIT (Project no.: HIT.NSRIF.2009 LPQQ57500095), and in part by the Transport Project of Jilin Provincial Communications Department (Project no.: 2010-1-7).|
Purpose – Corrosion sensors and networks are the most effective techniques to obtain the corrosion information and recognize the corrosion status of reinforced concrete structures. However, reference electrode is the key element to provide the baseline for potential control of the corrosion monitoring sensors during corrosion measurement process. Therefore, the purpose of this paper is to provide the novel solid-state reference electrode for the corrosion sensors.
Design/methodology/approach – A solid-state Ag/AgCl reference electrode has been prepared. Furthermore, the performance of the reference electrode, such as stability, temperature response, anti-polarization and influence of the concrete admixture, has been investigated.
Findings – The results indicate that the balance potential and the temperature coefficient of the reference electrode are 3.64±1mv (vs. SCE) at 25°C and -0.51?mv/°C±0.03?mv/°C, respectively. Furthermore, the polarization curve exhibits characteristics of three stages as the polarization current is in (-10µA/cm2,+10µA/cm2). Additionally, the reference electrode is insensitive to the concrete admixtures which include Na2SO4, NaCl, NaNO3 and NaNO2.
Originality/value – The research provides the key element for the corrosion monitoring sensors to integrate structural health monitoring system in future.
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