Spinel NiFe2O4 based solid state embeddable reference electrode for corrosion monitoring of reinforced concrete structures

摘要

In this study, solid state embeddable reference electrode was fabricated and examined for their potential stability in high alkaline environment for the application of corrosion monitoring in reinforced concrete structure. Further, the fabricated solid state reference electrodes (SSREs) were studied in the presence and absence of chloride ion in aqueous solution in order to ensure their potential stability. The results showed that the fabricated SSRE gave stable potential in alkaline medium even in the presence of chloride ions. Steel rebar corrosion assessment studies were carried out in alkaline solution and real concrete medium using the fabricated SSRE and the results were compared with conventional saturated calomel electrode (SCE). The results indicate that the fabricated SSREs have the ability to differentiate the passive and active state of steel rebar similar to SCE. (c) 2015 Elsevier Ltd. All rights reserved.