PODJUKLOVÁ Jitka VSB-Technical University of Ostrava

Spoluautoři SUCHÁNKOVÁ Kateřina, ŠRUBAŘ Petr, KOPAŇAKOVÁ Sylvie, HRABOVSKÁ Kamila

Corrosive environment has a major impact on the life of steel construction (bridge construction, production halls, towers, etc.), which are an integral part of civil engineering. The basic building material for these constructions is in most cases steel, which unfortunately in contact with the ambient atmosphere degrades in the time horizon. This negative effect can be prevented by the application of anticorrosion protection, mostly by organic coating systems. They are an indispensable part surface treatments and great emphasis is placed on quality. The choice of the protective coating system depends primarily on the expected or planned lifetime of corrosion protection. If wa are focusing on the long-term anticorrosive protection, especially bridge constructions, choice of surface pretreatment must be carefully considered. From the wide range of methods of surface pretreatment of bridge constructions is most commonly used blasting technologies that can be prepared the surface of required quality. This means, except of cleaning surface of the base material as well as achieving a suitable microgeometry and physical, or physico - chemical properties of the surface. The contribution is focused on experimental verification of coating systems for application on steel constructions with long-term exposure in corrosive environments. Blasted samples to preparation grade Sa 2 ½ with applied coating systems have been exposed in the atmosphere of salt spray and in the aggressive solution, which is used for testing the accelerating test of paint coatings rezistance against under corrosion. Then was performed an evaluation of degradation and adhesion tested coating systems. At the end of the experiment was found a contain of volatile organic compounds in paint systems by the gravimetric method.

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