Bond behaviour of normal/recycled concrete and corroded steel bars

被引:177
作者
Zhao, Yuxi [1 ]
Lin, Hongwei [1 ]
Wu, Kang [1 ]
Jin, Weiliang [1 ]
机构
[1] Zhejiang Univ, Inst Struct Engn, Hangzhou 310058, Zhejiang, Peoples R China
关键词
Recycled concrete; Steel corrosion; Bond strength; Bond stress-slip relationship; Relative bond rigidity; RECYCLED AGGREGATE CONCRETE; CORROSION INFLUENCE; REINFORCEMENT; STRENGTH; DETERIORATION; CRACKING;
D O I
10.1016/j.conbuildmat.2013.06.091
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Pullout and beam tests were performed to study the bond behaviour between normal aggregate concrete (NAC) or recycled aggregate concrete (RAC) and corroded steel bars. The results show that the corrosion-induced bond degradation characteristics of NAC and RAC pullout specimens are similar. For specimens with stirrups, the ultimate bond strengths of both NAC and RAC specimens do not change significantly with steel corrosion growth; the stirrups reduce the difference in bond behaviour between NAC and RAC specimens. Stress transfer in steel and bond stress distribution parameters were defined to characterise the bond behaviour. The bond stress-slip relationships were observed to vary between different locations. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:348 / 359
页数:12
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