Cathodic protection of steel in concrete - experiences on parking garages in Germany

摘要

In the last 12 years, ICCP on concrete structures became a steadily growing market in Germany, in particular in the private sector for car parks. Many of these structures are at least 25 years old, a great number of them with little or without any maintenance at all. Consequently, leaking joints and defective surface protection systems lead to permanent water penetration into the concrete. During winter time, the water brought in by frequent traffic is loaded with de-icing salt which very often results in severe corrosion on floors, column and wall bases and joints. Within the last 4 years, Zublin has executed more than 20 repairs on car parks applying ICCP. When the construction works were finalized, all ICCP systems were switched on and since then protect the structures from any further corrosion damage. Maintenance according to EN 12696 is secured by Zublin's service contracts, tailor-made for each project.