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Choe, G., Shinohara, Y., Kim, G., & Nam, J. (2020). Numerical Investigation on Lateral Confinement Effects on Concrete Cracking Induced by Rebar Corrosion. Materials, 13(5), 1156. | |||||
작성자 | 관리자 | ||||
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조회수 | 138 | 등록일 | 2020.03.05 | ||
주저자 | Gyeongcheol Choe | ||||
교신저자 | 042-821-7731 | ||||
공동저자 | Yasuji Shinohara, Gyuyong Kim, Sangkyu Lee, Euibae Lee | ||||
학술지명 | Applied sciences | ||||
Abstract
Accelerated corrosion tests of reinforced concrete (RC) specimens were conducted to estimate the corrosion expansion rate of reinforcing bars. Subsequently, finite element analysis was performed with the estimated expansion rate for RC beams to investigate concrete cracking induced by corrosion. The influence of the different confinement levels on crack behavior was investigated using mainly the amount of transverse reinforcement. An expansion rate of 2 was found to be appropriate when using Lundgren’s expansion model. Confinement levels affected the cracking behavior of steel bars. Cracks did not significantly affect structural capacity although they exceeded the allowable crack width. Nevertheless, repair and reinforcement measures are necessary because degrading durability factors such as carbonation or salt diffusion can reach the reinforcing bars through connected cracks. |