Effect on Eccentric RC Columns of TRC Strengthening in Chloride Environment

被引：0
|
作者：
Li Y. [1 ,2 ]
Yin S. [1 ,2 ]
Hu X. [2 ]
机构：
[1] State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology, Xuzhou
[2] Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, School of Mechanics & Civil Engineering, China University of Mining and Technology, Xuzhou
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2021年 / 29卷 / 04期
关键词：
Bearing capacity calculation; Chloride dry-wet cycles; RC eccentric compression columns; Scanning electron microscope(SEM); Strengthening methods; Textile reinforced concrete(TRC); TRC layers;
D O I：
10.16058/j.issn.1005-0930.2021.04.011
中图分类号：
学科分类号：
摘要：
Textile-reinforced concrete(TRC), as an alternative for fiber reinforced polymer(FRP), has attracted wide attention due to its advantages such as high bearing capacity, good crack limiting effect, and good corrosion resistance.A series of studies have been carried out on the mechanical properties of TRC-strengthened RC columns.However, the influence of TRC strengthening on the mechanical properties of eccentric reinforced concrete(RC) columns under chloride environment is not clear at present.Nine RC columns were designed and manufactured, and then, the chloride salt dry-wet cycle test was performed.Among them, eight RC columns were strengthened with TRC.When the chloride dry-wet cycle test was completed, the effects of different strengthening methods and layers on the mechanical properties of TRC-strengthened RC columns were explored through eccentric compression tests.The results show that with the increase of TRC layers, the ultimate bearing capacity of eccentric compression columns longitudinally unilateral strengthened by TRC increases under the chloride dry-wet cycle, whereas the ductility decreases.For fully enclosed columns, the ultimate bearing capacity and lateral deformation capacity increase with the increase of TRC layers.In addition, considering the influence of chloride ion erosion, a formula for calculating the bearing capacity of RC columns strengthened by TRC under eccentric compression was proposed. © 2021, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：915 / 926
页数：11
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