ABSTRACT
For 25 years corrosion sensors at the concrete structures of the Great Belt Link in Denmark have been tested by various standard methods, but the results did not allow for a satisfactory evaluation of the corrosion in the splash zone, partly because of cathodic protection from anodes in the water installed at the Great Belt Link. The use of alternative/traditional inspection methods is difficult in the splash zone and therefore it was investigated if corrosion evaluation in this very important zone could be improved by optimizing the use of the corrosion sensors. The sensor setup was changed from separate sensor parts to all sensor parts being connected to the reinforcement which allowed detailed evaluation of the complex conditions in the splash zone governed by macro-cell corrosion and protection/prevention from the water anodes. Introduction of continuous monitoring allowed to document the influence from weather conditions on the corrosion conditions in the splash zone.
