Relationship between Crack Width and Corrosion Ratio of Rebar

The determination of corrosion ratio of reinforcing bar is one most important basis for assessment of bearing capacity of corrosive concrete structures. Based on the assumption uniform corrosion and corrosion product is not lost, the numerical simulation and theoretical derivation is applied for establishment of expansion process for corrosive concrete structures, the relationship between corrosion ratio of reinforcement and crack width is established. The results the corrosion ratio of reinforcement is almost proportional to crack width, while the crack width is small, the influence of c/d ratio is not significant.