Effectively Analysis of Concrete Bridge Deck Corrosion using Electrochemical Impedance Spectroscopy

Corrosion condition measurement of steel reinforcement in concrete is important in concrete constructions. Electrochemical impedance spectroscopy (EIS) is one of the effective technique for measuring corrosion condition based on the electrical impedance value. In this contribution, the reinforcing steel corrosion conditions in concrete bridge decks were studied. Several effects of parameters including the presence of a sealant, temperature and moisture content were investigated. Results suggest the EIS is a valuable tool for non-destructive bridge deck condition assessment. The best frequency range used for measurement is 100 Hz to 1 kHz.