[L21] 腐食・防食Ⅱ

[L1183] Cover Crack-Width Propagation of Reinforced Concrete Members Induced by Corrosion

Aris ARYANTO¹,篠原 保二² (1.Tokyo Institute of Technology,2.東京工業大学)

キーワード：ひび割れ幅,腐食,鉄筋コンクリート,保守性

Cover crack-width propagation of reinforced concrete beams caused by corrosion are experimentally investigated through the accelerated corrosion testing. The study evaluates the relative influence of stirrup confinement, bar diameter, and concrete strength. The crack-width propagation increases with increasing of concrete strength. It was found that the stirrups strain rate is coherent with the rate of crack propagation so that the crack propagation rate can be monitored from the strain rate. Vice versa, the corrosion rate and strain of stirrups can be estimated from the crack propagation.
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