Corrosion Inhibitors

Concrete protection also means protecting the embedded steel bars from corrosion. This can be done by applying a protective layer on the reinforcement, by using corrosion inhibitors or by cathodic protection. 

Chlorides are displaced at the steel surface by Sika® FerroGard®, which forms a protective film that moves the corrosion potential and reduces the current densities to a very low level. Standard design and construction practice ensures that the corrosion of steel reinforcements is limited. This includes observing minimum concrete quality (w/c-ratio, cement content, minimum strength) and maintaining minimum concrete cover over the steel bars. However, in many cases, especially in environments with high levels of chlorides (de-icing salts, seawater or even contaminated concrete mix components), these basic protection procedures can prove insufficient.