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Coastal or offshore areas of the concrete structure , the need to de-icing salt sprinkled highway or city roads and bridges, as well as harsh environments ( such as high saline soils , etc. ) under the conditions of concrete structures vulnerable to erosion of chloride ions , causing structural damage to the earlier of the structure durability , safety and reliability bring great harm. This issue has attracted wide attention and become a hot topic of research . Most studies abroad are entirely based on concrete structures in seawater erosion , and the fact of such erosion is not very common , more buildings suffered erosion of chloride ions in the atmosphere . In this paper, salt spray corrosion environment concrete structure, under laboratory conditions, the use of heat carbonation chamber salt spray corrosion test , for different water-cement ratio , different protective layer thickness of reinforced concrete structures were simulated experiment were measured different corrosion stage carrying capacity analyzes concentrated loads beam crack development situation , cracking load , ultimate load and deformation properties . Focuses on the concrete strength, thickness and corrosion protection layer on the bearing capacity of the cycle , and the salt spray corrosion mechanism for a simple analysis . Experiments show that , by the salt spray erosion , cracking of reinforced concrete beams and patterns and erosion damage to the same as before ; in other conditions remain unchanged under the premise of lower water-cement ratio , increase the thickness of the protective layer of concrete to some extent, can improve the resistance of concrete erosion performance ; spray erosion of reinforced concrete structures diagonal shear capacity declined ; stirrup corrosion is more serious, longitudinal reinforcement also occurred micro corrosion.
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