Experimental study on the seismic behavior of RC shear walls in a simulated acid environment

被引：0
|
作者：
Zheng Y. [1 ,2 ]
Zheng S.-S. [1 ,2 ]
Dong L.-G. [1 ,2 ]
He J.-C. [3 ]
Ming M. [1 ,2 ]
机构：
[1] Collage of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi
[2] Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education(XAUAT), Xi'an, 710055, Shaanxi
[3] The Institute of Architectural Design and Research of Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi
来源：
Gongcheng Lixue/Engineering Mechanics | 2020年 / 37卷 / 05期
关键词：
Acid rain environment; Axial compression ratio; Quasi-static test; RC shear wall; Seismic behavior; Steel corrosion;
D O I：
10.6052/j.issn.1000-4750.2019.07.0394
中图分类号：
学科分类号：
摘要：
To investigate the seismic behavior of reinforced concrete (RC) shear walls corroded in the environment of an acid rain, six corroded RC shear wall specimens with a shear-span ratio of 2.14 were subjected to accelerated corrosion in a simulated acid environment. The quasi-static tests were carried out, and the seismic behavior of RC shear walls was obtained under different axial compression ratios and degrees of erosion. The results reveal that the precipitated crystals, eroded holes and exposed aggregates appeared on the surface of the RC shear wall concrete due to the combined erosion of H+ and SO4 2+ in the simulated acid solution, and that the erosion phenomenon was severer with the prolongation of the corrosion. With the increase in the degree of erosion, the horizontal cracks at the bottom of the wall appeared earlier and the spacing between the cracks was larger, the crack width became wider, and the strength, deformation capacity and energy dissipation capacity of the specimens degraded to varying extents. As the axial compression ratio increased, the cracking load, yielding load and peak load of the wall were increased, the crack development was slowed down, but the deformation capacity and energy dissipation capacity of the specimens decreased continuously and the peak point shear deformation and its proportion of total deformation decreased. © 2020, Engineering Mechanics Press. All right reserved.
引用
收藏
页码：190 / 198and227
相关论文
共 16 条
  • [1] Qi W., Xi J., The actuality and trend of acid rain research, Environmental Monitoring in China, 18, 1, pp. 6-11, (2002)
  • [2] Cao C., Zheng S., Hu W., A survey on concrete structure properties under acid rain erosion, Materials Reports, 33, 6, pp. 1869-1874, (2019)
  • [3] Kong L.H., Orbison G.J., Concrete deterioration due to acid precipitatio, ACI Materials Journal, 84, 2, pp. 110-116, (1987)
  • [4] Goyal S., Kumar M., Sidhu D.S., Et al., Resistance of mineral admixture concrete to acid attack, Journal of Advanced Concrete Technology, 7, 2, pp. 273-283, (2009)
  • [5] Xie S., Zhou D., Yue Q., Et al., Influence of simulated acid rain on streugtu, crystal and pore structures of sand-lime slurry, Acta Scientia Circumstan Tiae, 17, 1, pp. 25-31, (1997)
  • [6] Liu H., Zhou D., Xie S., A study on influences of acid rain in southwest China on concrete, Journal of Harbin Institute of Technology, 29, 6, pp. 101-105, (1997)
  • [7] Guan Y., Zheng S., Seismic behaviors of RC frame beam-column joints under acid rain circle: a pilot experimental study, Journal of Earthquake Engineering, 21, 6, pp. 1-19, (2017)
  • [8] Zheng S., Zuo H., Liu W., Et al., Experimental research on aseismic behaviors of RC frame beams of low shear span ration in general atmospheric environment, Engineering Mechanics, 34, 7, pp. 186-194, (2017)
  • [9] Wang D., Experimental study on bending property of reinforced concrete beam exposed to simulated acid rain environment, (2011)
  • [10] Niu J., Concrete neutralization in the atmospheric environment based on multi-factor effects, (2008)
12