This study aims to propose a simplified equation for estimating the bond strength of corroded reinforcing bars. To this end, extensive parametric analyses were performed using the detailed analysis method presented in the authors’ previous study, where a wide range of critical variables were considered, such as compressive strength of concrete, net cover thickness, and reinforcing bar diameter. The sensitivity in bond strength of the corroded reinforcing bar according to each variable was evaluated. On this basis, a simplified formula for the bond strength of the corroded reinforcing bar was derived through regression analysis. The proposed equation was rigorously tested and verified using the bond test results of corroded reinforcing bars collected from the literature. The results confirmed that the proposed equation could estimate the bond strengths of specimens with better accuracy than the existing models, providing a reliable tool for engineers and researchers. In addition, the proposed equation was used to analyze the development length required for corroded tensile reinforcement to exert its yield strength, and it showed that the cover thickness of concrete must be at least four times the diameter of the reinforcing bar to achieve the yielding strength of reinforcing bar even at a corrosion degree of more than 5.0%.

1. 서 론
2. 수정된 두꺼운 벽 실린더 모델
3. 부착강도 산정 간략화 모델
    3.1 변수해석 개요
    3.2 부착강도 간략화 모델
    3.3 부착강도 간략화 모델
4. 부식된 철근의 정착길이
5. 결 론
/ 감사의 글 /
/ REFERENCES /

• 한선진(전주대학교 건축공학과 조교수) | Han Sun-Jin (Assistant Professor, Department of Architectural Engineering, Jeonju University)
• 이득행(충북대학교 건축공학과 부교수) | Lee Deuckhang (Associate Professor, Department of Architectural Engineering, Chungbuk National University) Corresponding author