Abstract:The influence of multi factors(admixture, water cement ratio, curing age, accelerated corrosion regimes) on the bond strength between the steel and concrete was researched. The influence degree of each factor on the bond strength between steel and concrete was determined. Besides, the multiple nonlinear regression model was proposed. The experiment results show that the maximum bond strength between the steel and concrete is obtained for the specific factors. The influence of different factors on the bond strength of reinforced concrete is different. The influence of water cement ratio and admixture are most remarkable, while the influence of accelerated corrosion regime is not notable. The multi nonlinear regression model is established to describe the influence of multi factors on the bond strength between the steel and concrete effectively. The bond strength of reinforced concrete decreases with the increase of water cement ratio and increases with the increase of curing age. Besides, change of bond strength of reinforced concrete is different for different admixtures and different accelerated corrosion systems.
