Title
Corrosion protection of reinforcement by hydrophobic treatment of concrete
Author
Polder, R.B.
de Vries, H.
TNO Bouw
Publication year
1999
Abstract
Penetration of de-icing salts into concrete bridge decks may cause corrosion of reinforcement. Hydrophobic treatment of concrete was studied as additional protection. It was shown that hydrophobic treatment strongly reduces chloride ingress, during semi-permanent contact and in wetting/drying situations. The protection remains effective for at least five years. Carbonation of concrete is not significantly accelerated. Hydrophobic treatment does not stop corrosion if initiation by chlorides has already taken place before the treatment. Criteria for testing hydrophobic agents are available. Hydrophobic treatment is an effective, low cost preventative measure against corrosion of reinforcement. It has become standard for all new concrete bridge decks in The Netherlands.
Subject
Architecture and Building
Concrete
Reinforcement corrosion
Hydrophobic treatment
Preventive measures
To reference this document use:
http://resolver.tudelft.nl/uuid:db25151d-f8be-4c89-a599-ebca7131af4a
TNO identifier
329478
Source
EUROCORR'99, Aachen, Germany, 30 Augustus-2 September, 10
Document type
conference paper