| Title |
Use of Electrochemical Techniques for Assessing of Corrosion Rate of Reinforcing Steel in Concrete Structures |
| Keywords |
Concrete ; Reinforcing Steel ; Corrosion Rate ; Polarization Resistance ; AC Impedance ; Galvanostatic Pulse ; Electrical Circuit |
| Abstract |
This paper discusses the results of three different electrochemical techniques which have been investigated for use in assessing corrosion rates of reinforcing steel bar in concrete structures. Linear polarization resistance, AC impedance and galvanostatic pulse transient response technique were used to measure corrosion rates of reinforcing steel in concrete, and these results were made a mutual comparison. Electrical equivalent circuit models were derived for actively corroding and passive steel bars in concrete, and these were used to interpret and understand the results obtained from each electrochemical technique. In this study, the practical use of each technique is discussed, and measurement parameters for practical application are derived from the experimental results. Guidance is given on the use of the each technique to assess the corrosion rate of reinforcing steel in concrete and for the interpretation of the data obtained. |