Experimental investigation on shear performance of RC beams due to longitudinal reinforcement corrosion

被引：1

作者：

Huang T. ^{[1
]}

Zhao Z. ^{[1
]}

Song L. ^{[1
]}

Wang N. ^{[1
]}

机构：

[1] School of Civil Engineering, Central South University, Changsha

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 08期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Average corrosive crack width; Corroded reinforced concrete beams; Deflection performance; Failure mode; Shear bearing capacity;

D O I：

10.11817/j.issn.1672-7207.2019.08.018

中图分类号：

学科分类号：

摘要：

To investigate the influence of longitudinal reinforcement corrosion on the shear performance of the reinforced concrete(RC) beams, 9 RC beams were designed and constructed. These RC beams were immersed in the liquid with 5% sodium chloride and the longitudinal reinforcements were corroded by using the electrochemical accelerated corrosion method. Finally, these corroded RC beams with different corrosion levels were tested by using the four-point loading mode under simply supported conditions to investigate the effect of longitudinal reinforcement corrosion on the average corrosive crack width, the failure mode, shear bearing capacity and deflection performance of the corroded RC beams. The results show that with the increase of the longitudinal reinforcement corrosion level, the average widths of the corrosion-induced cracks increase linearly, the failure modes of the corroded RC beams are changed from the bending failure to the shear-compression failure and the bond-shear failure. The shear bearing capacities of the corroded RC beams decrease linearly and the mid-span deflections of the corroded RC beams failure increase. © 2019, Central South University Press. All right reserved.

引用

页码：1901 / 1911

页数：10

共 17 条

[1] Sun W., Durability and service life of structure concrete under load and environment coupling effects, Journal of Southeast University(Natural Science Edition), 36, pp. 7-14, (2006)
[2] Yuan Y., Yu S., Deterioration of structural behavior in corroded reinforced concrete beam, Journal of Building Structures, 18, 4, pp. 51-57, (1997)
[3] Yuan Y., Jia F., Cai Y., The structural behavior deterioration model for corroded reinforced concrete beam, China Civil Engineering Journal, 34, 3, pp. 47-52, (2001)
[4] Ni G., Jin W., Zhu W., Et al., Effect of pitting corrosion on flexural performance of RC beams, Building Structures, 38, 7, pp. 78-81, (2008)
[5] Xu S., Zeng K., Niu D., Flexural strength model of corrosive reinforced concrete flexural member, Building Structures, 36, 10, pp. 79-81, (2006)
[6] Zhang J., Zhang K., Peng H., Et al., Calculation method of normal section flexural capacity of corroded reinforced concrete rectangular beams, China Journal of Highway and Transport, 22, 3, pp. 45-51, (2009)
[7] Jin W., Xia J., Influence of pitting corrosion on the bending capacity of reinforced concrete beams, Building Structures, 39, 4, (2009)
[8] Jin W., Xia J., Jiang A., Et al., Flexural capacity of corrosion-damaged RC beams, China Civil Engineering Journal, 42, 11, pp. 64-70, (2009)
[9] Xia J., Jin W., Li L., Effect of chloride-induced reinforcing steel corrosion on the flexural strength of reinforced concrete beams, Magazine of Concrete Research, 64, 6, pp. 471-485, (2012)
[10] Wei J., Zhang M., Dong R., Et al., Experimental research on the failure mode of concrete beam due to steel corrosion, Journal of Hunan University(Natural Sciences), 40, 10, pp. 15-21, (2013)

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