ABSTRACT
The main deterioration aspect for reinforced concrete structures is the corrosion of steel in concrete. Nowadays, a lot of existing infrastructure buildings like bridges or park decks show damages like cracks and spalling of concrete cover due to an ongoing corrosion. A strong interest in predicting damages and the corrosion propagation therefore exists. In general five preconditions must be given, to make reinforcement corrosion possible:
1. Missing passivation (by low pH or chloride ingress) so that anodic reaction can take place,
2. sufficient oxygen in the surrounding concrete of the reinforcement for a cathodic reaction,
3. electric connection between anode and cathode for an electron transport,
4. potential difference (driving potential) between anode and cathode and
5. electrolytic connection for a transport of ions from cathode to anode.
