2차원 경계요소법을 이용한 복철근의 전기화학적 특성에 관한 연구

Abstract

This study perfonns the numerical analysis of electric potentials and currents in reinforced concrete to achieve the nondestructive evaluation of corrosion using a half-cell potential measurement and polarization resistance method. Electric fields around single and double reinforcing steel bars are analyzed using a 2-D Boundary Element Method (HEM). In the half-cell potential measurement, the potential distribution in double reinforcing steel bars in concrete is represented as a singular shape rather than a circle shape. It .means that the potential value inside concrete and current ratio in rebar are closely related to the size and number of rebars. In the polarization resistance method, the polarized area of rebar is associated with the current intensity and current ratio.