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首页> 外文期刊>Construction and Building Materials >Crack propagation and flexural behaviour of RC beams under simultaneous sustained loading and steel corrosion
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Crack propagation and flexural behaviour of RC beams under simultaneous sustained loading and steel corrosion

机译：同时承受持续荷载和钢腐蚀的RC梁的裂纹扩展和挠曲特性

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This paper investigated the cracking behaviour and flexural capacity of beams under simultaneous sustained loading and steel corrosion. Chloride ions were electro-migrated into the concrete beams, and then DC current, coupled with wetting and drying cycles, was applied to accelerate the steel corrosion. During the steel corrosion, the beams were subjected to sustained loading at different levels. The cracking maps were drawn and crack width was measured periodically. The flexural capacity and the steel corrosion degree were measured after seven wetting and drying cycles. The results show that simultaneous loading and corrosion lead to more severe and faster cracking damage on the beams and reduce the beams' ductilities. The corrosion of the tension reinforcement occurs more slowly than that of the stirrups, while the tension-reinforcement corrosion at the areas connecting with the stirrups is slighter than the corrosion at the other parts of the tension reinforcement. (C) 2017 Published by. Elsevier Ltd.
机译：本文研究了同时承受持续荷载和钢腐蚀时梁的开裂行为和抗弯能力。氯离子被电迁移到混凝土梁中，然后施加直流电流以及润湿和干燥循环，以加速钢的腐蚀。在钢腐蚀期间，梁承受不同水平的持续荷载。绘制裂纹图并定期测量裂纹宽度。在七个润湿和干燥循环之后，测量挠曲能力和钢腐蚀程度。结果表明，同时加载和腐蚀会导致梁受到更严重，更快的裂纹破坏，并降低梁的延展性。张力增强件的腐蚀比箍筋的腐蚀发生得更慢，而与箍筋连接的区域的张力增强腐蚀比张力增强件其他部分的腐蚀轻微。 （C）2017发布者。爱思唯尔有限公司

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