Study On The Durability Of Seaport Wharf

Corrosion of steel bars in concrete port structures is a serous problem throughout the world. Chloride-induced corrosion of reinforcement is one of the major causes of deterioration leading to a reduced service life of reinforced concrete structures in marine environments. Based on theoretical analysis and numerical simulation, the durability of concrete port structures exposed to marine environments are studied in this paper.The main task of this paper includes:1. The situation of the research of the concrete port structures' durability is summarized here.2. Numerical simulation about the chloride ion's diffusion in concrete has been carried out. A thermal model of 2D FLAC is used to simulate the chloride ion's diffusion in carbonized concrete and un-carbonized concrete, because they have the same control equation. Each parameter's correspondence rule is also explained in the paper.3. The effect of concrete carbonization degrees on diffusion of chloride in concrete has been analyzed by contrasting diffusion of chloride in three different concrete4. The effect of concrete carbonization degree on the beginning corrosion time of the steel has been analyzed by numerical simulation about the change of the chloride ion's concentration on the steel.5. The effect of concrete carbonization degree on the effect of the initial chloride ion's concentration on the beginning corrosion time of the steel has been analyzed.