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Title: Old and New Coatings Against Chloride Ingress in Concrete

Author(s): J. Beslac and K. Mavar

Publication: Symposium Paper

Volume: 200


Appears on pages(s): 569-578

Keywords: aging resistance; capillary absorption; chloride ingress; gas permeability; protective coatings; testing; water vapour diffu-sion

DOI: 10.14359/10602

Date: 6/1/2001

The results of laboratory and in situ tests of a number of different types of coatings commercially available in Croatia (polymer-cement, epoxy, acrylic, epoxy-acrylic and epoxy-polyurethane), used for reinforced concrete protection of the KRK bridge, are presented. The tests have been carried on throughout the last ten years. Some coatings like epoxy and polymer-cement were found completely unacceptable for the technical reasons. However, epoxy-polyurethane coatings applied on the concrete finished with the thin layer of epoxy-cement mortar are estimated rather effective. They had high adhesion strength (above 2,0 MPa), very low gas permeability, low capillary absorption, satisfactory water vapour diffusion and satisfactory ageing resistance.


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