Corrosion & Corrosion prevention Ⅳ

[1208] MECHANICAL CHARACTERISTICS OF RC BEAMS WITH CORRODED STIRRUPS OR MAIN REINFORCEMENTS

Visal ITH¹, Koji MATSUMOTO², Junichiro NIWA² (1.Tokyo Institute of Technology 2.東京工業大学)

Keywords:shear capacity, stirrup corrosion, main reinforcement corrosion, corrosion cracks, shear cracking load, sliding, arch action

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This paper discusses the result of an experimental program designed to investigate the shear behavior of RC beams with corroded stirrups or main reinforcements. In the loading test of stirrup corrosion beams, the image analysis was conducted, and the result indicated that the shear cracking load increased due to the opening and sliding along the vertical corrosion cracks induced by the stirrup corrosion. Even non-corroded stirrups were provided to the RC beams with main reinforcement corrosion, the formation of arch action was observed.