Failure Analyses and Durability Designs of Concrete Structures on the Effect of Chloride Ion

Reinforcement corrosion is the important effect on the durability and safety of reinforcement concrete(RC) structures.Service life of concrete structures depends on its durability.The most normal and most serious reason,which caused degraded performance of RC structures in costal area,is chloride-induced corrosion.In this paper,the origin of chloride ion and its entry way is introduced.Durable damage for concrete structures is studied from aspects of mechanism as well as process caused the corrosion of reinforcing steel,and effect of structure performance.Finally,for the sake of improving the service life of concrete structures,some durability designs of concrete structures that based on erosion effect of chloride ion are discussed.