ABSTRACT
This study was carried out to investigate quantitatively the relationship between the degree of rebar corrosion and the strength and structural behavior of concrete beams singly reinforced with such rebars. After pull-out tests and tension tests were carried out to obtain material models experimently at different stage of corrosion, finite element method(FEM) analysis was conducted using these models. The analysis results were then verified by static loading tests on the beams. As a result, it was found that the strength of singly reinforced beams damaged by corrosion can be analyzed by the FEM using experimentally determined material models representing the bond properties between concrete and corroded rebars and the mechanical properties of corroded rebars. It was also found that the dominant cause of the strength losses of such beams is the reduced yield point of corroded rebars and that the reduction in their stiffness is due to reductions in the elastic modulus of the rebars and in the bond strength and bond rigidity between concrete and corroded rebars.
