Experimental Research on Accelerated Corrosion of Reinforced Concrete Based on Constant Current Density
SHANG Minggang1, HE Zhongmao1,2, QIAO Hongxia1, FENG Qiong1, SU Fuyun3, ZHANG Lu1
1 School of Civil Engineering, Lanzhou University of Technology,Lanzhou 730050, China 2 College of Science & Technology, Ningbo University,Ningbo 315211, China 3 Gansu Civil Engineerring Research Institue Co.,Ltd,Lanzhou 730020, China
Abstract: In order to solve the problem of corrosion of reinforced concrete in saline soil environment, constant current accelerated corrosion test was carried out with current density of 182 μA/cm2,364 μA/cm2 and 546 μA/cm2. The corrosive properties of reinforced concrete were studied by polarization curve method (LPR), Cl- content analysis, EDS, etc. and the Copula function damage model and Cl- diffusion model were established. The research shows that the eutectic accelerated current corrosion efficiency of reinforced concrete is 364 μA/cm2,546 μA/cm2,182 μA/cm2 from high to low in the wet saline soil environment, and the constant current acceleration (no crack), The diffusion coefficient of Cl- is 1.115×10-12 m2/s. In the later stage (cracks appear), the larger the initial crack, the faster the reinforced concrete damage; the convective concrete constant current accelerated life value of 182 μA/cm2,364 μA/cm2 and 546 μA/cm2 are 700 h,350 h,175 h.
Yin Cheng,Hao Yu,Bao Linzhu,et al. Journal of Zhejiang University-Science A(Applied Physics & Engineering),2016, 17(5),389. 2 Lin Qinghua, Li Changhong, Huo Baoying,et al. Journal of University of Science and Technology Beijing,2007(5),456(in Chinese).林清华,李长洪,霍保营,等. 北京科技大学学报,2007(5), 456. 3 Duan Pengcheng,Xiong Heigang,Li Rongrong, et al. Spectroscopy and Spectral Analysis,2017,37(2),571(in Chinese).段鹏程,熊黑钢,李荣荣,等. 光谱学与光谱分析,2017,37(2),571. 4 Jiang Weidong, Chen Xiao, Yan Jun, et al. Journal of Northeastern University(Natural Science),2008,29(2) , 280(in Chinese).蒋卫东,陈啸,闫俊,等. 东北大学学报(自然科学版),2008,29(2),280. 5 Qiao Hongxia, Gong Wei, Cheng Qianyuan, et al. Journal of China Coal Society, 2015,40(S2),346(in Chinese).乔宏霞,巩位,程千元,等. 煤炭学报,2015,40(S2),346. 6 Wang Fusheng,Sun Ruilian,Qin Xiaojuan. Bulletin Bulletin,2002(4),16(in Chinese).王复生,孙瑞莲,秦晓娟. 硅酸盐通报,2002(4),16. 7 Geng Ou, Feng Tai, Li Debao, et al. Journal of Wuhan University of Technology, 2016, 31(2),345. 8 Du Yingang, Cullen M, Li Cankang. Construction & Building Materials, 2013, 39, 148. 9 Malumbel G, Alexander M, Moyo P. Cement & Concrete Research,2010, 40(9), 1419. 10 Wang Fengping,Kang Wanli, Jing Hemin,et al. Principles, methods and applications of corrosion electrochemistry, Chemical Industry Press, 2008(in Chinese).王凤平, 康万利, 敬和民,等. 腐蚀电化学原理、方法及应用,化学工业出版社, 2008. 11 Feng Qiong, Qiao Hongxia, Zhu Binrong, et al. Journal of Building Materials, 2018,21(4), 568(in Chinese).冯琼,乔宏霞,朱彬荣,等. 建筑材料学报,2018,21(4),568. 12 Geng Weilian,Wang Yi. Journal of Wuhan University of Technology,2007(6),73(in Chinese).瞿伟廉,王仪. 武汉理工大学学报,2007(6),73. 13 Chen Yueshun,Wei Jun,Luo Xiaohui. Journal of Wuhan University of Technology,2007(2),51(in Chinese).陈月顺,卫军,罗晓辉. 武汉理工大学学报,2007(2),51. 14 Huang Zhengyu,Ji Xueling,Huang Jing. Journal of Hunan University(Natural Science),2008(8),5(in Chinese).黄政宇,纪学灵,黄靓. 湖南大学学报(自然科学版),2008(8),5. 15 Zhang Yunsheng,Sun Wei,Liu Sifeng, et al. Architectural Technology,2002(1),34(in Chinese).张云升,孙伟,刘斯凤,等. 建筑技术,2002(1),34. 16 Chen Kefan, Qiao Hongxia, Wang Penghui, et al. Journal of Building Materials, 1. 31. 1764. tu. 20190513. 0918. 006. html(in Chinese).陈克凡,乔宏霞,王鹏辉,等. 建筑材料学报,1-15. 31. 1764. tu. 20190513. 0918. 006. html. 17 Yu Hongfa,Sun Wei,Yan Lianghui, et al. Journal of the Chinese Ceramic Society,2002,46(6),686(in Chinese).余红发,孙伟,鄢良慧, 等. 硅酸盐学报,2002,46(6),686. 18 Yu Hongfa, Sun Wei, Yan Lianghui, et al. Journal of the Chinese Ceramic Society,2002,46(6),696(in Chinese).余红发,孙伟,鄢良慧,等. 硅酸盐学报,2002,46(6),696. 19 Yu Hongfa,Sun Wei,Yan Lianghui, et al. Journal of the Chinese Ceramic Society,2002,46(6),691(in Chinese).余红发,孙伟,鄢良慧,等. 硅酸盐学报,2002,46(6),691. 20 Qiao Hongxia, Wang Penghui, Li Yuanke, et al. Journal of Southwest Jiaotong University,2019,54(6),1252(in Chinese).乔宏霞,王鹏辉,李元可,等. 西南交通大学学报, 2019,54(6),1252. 21 Wang Penghui, Qiao Hongxia, Feng Qiong, et al. Journal of Jilin University (Engineering Edition), 1. 10. 13229/j. cnki. jdxbgxb20180965(in Chinese).王鹏辉,乔宏霞,冯琼,等. 吉林大学学报(工学版),1. 10. 13229/j. cnki. jdxbgxb20180965. 22 Pan Xiong,Wang Lili,Xu Yuqin, et al. Automation of Electric Power Systems,2014,38(14),17.
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2020, Vol. 34 
