Testing technology and study of concrete structure durability under chlorine salt corrosion environment

Durability problems of concrete structure become more and more outstanding in coastal areas of our country.The concrete wharf durability of Beibu Gulf port was investigated,and main types and characteristics of durability disease were analyzed.Took a berth wharf for example,the damage extent and actual stress state was studied by the durability test.The variation law of effective and relative diffusion coefficient in concrete with depth was studied and the prediction model of structural service life in chlorine salt corrosion environment was proposed,that provided scientific basis for repair,reinforcement and durability design of concrete wharf.Finally,the direction of further study was pointed out.