Corrosion damage to concrete structures is widespread and usually requires extensive repair and maintenance work. The installation of active corrosion protection systems is therefore a useful tool for preventing corrosion. The application of thermally sprayed zinc layers on the concrete surface, which are used as anode to protect the steel reinforcement, was transferred from steel construction. Such systems are advantageous because of their simplicity and low cost. These systems can already be used in novel construction and after the repair of concrete structures. In this paper, novel results from long-term studies are presented. The result of the investigations suggest that sprayed zinc coatings are practically always suitable whenever structural elements are to be protected by cathodic protection. Paper includes a German-language abstract.

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