Flexural performances analysis of TRC-strengthened beams under chloride corrosion

被引：0

作者：

Yin S. ^{[1
,2
]}

Yu Y. ^{[2
]}

Na M. ^{[1
]}

机构：

[1] State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, 221116, Jiangsu

[2] Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou, 221008, Jiangsu

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2019年 / 47卷 / 02期

关键词：

Bearing capacity; Chloride erosion; Crack development; Reinforced concrete; Textile reinforced concrete;

D O I：

10.13245/j.hust.190202

中图分类号：

学科分类号：

摘要：

Four-point bending method was used to analyze the influence of chloridedry-wet cycle and its coupling with bending stress on the bending performances of textile reinforced concrete (TRC) strengthened beams. The results show that with the increase of the dry-wet cycle times, the crack width and mid-span deflection of the beams develop faster, and the bearing capacity decreases. When the times reaches 300, the cracking load of the beam decreases significantly. Under the coupling effect of dry-wet cycle and bending stress, with the increase of bending stress, the ultimate bearing capacity of the TRC-strengthened beams decreases, and the crack in the later stage develops faster. When the stress level is 0. 5, the crack limiting performance of TRC decreases greatly. The mid-span deflection of the beam decreases at the same level of loading because of the influence of the initial deflection resulted from the sustained load corrosion. Based on the experimental results, the calculation formula of the bearing capacity of TRC-strengthened RC beams is established, and the calculated values are in a good agreement with the testing values. © 2019, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.

引用

页码：7 / 13

页数：6

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