Preventative Measures in the Presence of Chlorides

The cost of various techniques can only be given very roughly, and any estimate will be incomplete, since the actual cost will vary from one application to another. Furthermore, different types of prevention mechanisms are not directly comparable. Beyond this, it can be said that with respect to normal carbon-steel reinforcement, use of galvanized and epoxy-coated bars costs about twice as much, and the cost of stainless-steel reinforcement is about 5 to 10 times higher. The use of nitrite inhibitors in higher doses costs approximately 30 /m of concrete (volume). Coatings may vary from 7 to 50 /m of concrete surface, hydrophobic treatment costs about 10 /m. Cathodic prevention varies from 50 to 100 /m.  

In any case, it is often not possible to find well-consolidated criteria that allow a decision to be made in favour of one method or another on the basis of technical and economic considerations. Ideally, prevention options should be compared on 

Carbon steel Corrosion inhibitor Stainless steel 1.4301 Stainless steel 1.4401 Cathodic prevention 

CEB-RILEM Workshop Durability of Concrete Structures, 18—20 May 1983, Workshop Report, 131-134, Copenhagen, 1984. 

Wilkins, P. F. Lawrence, The corrosion of steel reinforcements in concrete immersed in seawater , Proc. Corrosion of Reinforcement in Concrete, (Ed.) A. P. Crane, Society of Chemical Industry, 1983, 119-141. 

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