Abstract: In order to deepen the understanding of the evolution mechanism of durability of reinforced concrete structures under chloride erosion environment, this paper systematically elaborates corrosion mechanism of reinforced concrete under chloride erosion, evolution law of bonding performance of steel-concrete interface and constitutive model of bonding strength, the generation and expansion of concrete cracks, concludes the typical test results of the evolution law of mechanical properties of beam and column members, and summarizes the current main anti-corrosion technologies and methods. The results show that the change law of the bonding performance of the steel-concrete interface in the electric accele-rated corrosion test and the pull-out test, as well as the corrosion test and the bearing capacity test of the reinforced concrete members, are carried out in stages, all of which ignore the stress characteristics of the actual reinforced concrete structure, and the corrosion process adopted in test is significantly different from the service corrosion. The complex and changeable characteristics of the real environment and material properties should not be ignored. Prevention corrosion methods are mainly based on the improvement of the cementitious matrix and the protection of the steel bar. The former means that the porosity and the connectivity between the pores are reduced to prevent the transfer of chloride to the steel bar. By adding cementitious materials or fibers into concrete to improve the compactness of concrete, steel bars are reinforced with fiber-reinforced polymer (FRP) bars, protective coatings or alloy steel on the surface of steel bars to protect steel bars. Electrochemical corrosion control includes cathodic protection and electrochemical chloride ion extraction.
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