ABSTRACT
Half-cell potential mapping is a widely employed measurement technique which allows for a fast and essentially non-destructive assessment of concrete structures with respect to reinforcement corrosion. This method normally involves measuring the potential difference between a reference electrode placed on the concrete surface and the embedded reinforcing steel. In practice, most often a copper/copper sulfate (CSE) or silver/silver chloride (SSC) half-cell is used as the reference electrode. Although half-cell potential mapping neither quantifies the actual rate of corrosion nor the residual cross sectional steel area, past experience has demonstrated that the half-cell potential method has proved to be very effective for locating corroding reinforcement in concrete structures.
