Abstract
With the development of The Times and the progress of the society, more and more buildings have been built, more and more roads and bridges have been built, that is to say, the number of concrete structures is increasing.While concrete is convenient for our life, we also find that in the service of concrete structure, its durability sometimes fails to reach the designed service life. Especially, concrete buildings in coastal areas are corroded by chloride ions for a long time, which causes damage to the concrete structure.An effective way to solve this problem is to apply anti-corrosion coating on the concrete in service.This paper aims to introduce the influence of different anticorrosive coating systems on chloride ion erosion resistance of concrete.Through drilling samples of concrete specimens with dry and wet circulation in 10% NaCl solution.The content of chloride ion in concrete powder was tested at different depths.By comparing the experimental data of these three different anticorrosive coatings, we can find that polyurethane coating has the best chloride ion resistance, the next is polyurea coating.Both of them protect the concrete from chloride ion erosion.
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