Study on Corrosion Deterioration of Reinforced Concrete Under Constant Acceleration Test Based on Double Stress

doi:10.11896/cldb.21030289

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Study on Corrosion Deterioration of Reinforced Concrete Under Constant Acceleration Test Based on Double Stress
	Shang, Minggang 1; Zhang, Yunsheng 1; He, Zhongmao 1,2; Qiao, Hongxia 1; Feng, Qiong 1; Xue, Cuizhen 1; Han, Zhao 1
刊名	Cailiao Daobao/Materials Reports
	2022-06-10
卷号	36 期号:11
关键词	Chlorine compounds Corrosive effects Deterioration Durability Electrochemical corrosion Electrochemical impedance spectroscopy Ions Maximum likelihood estimation Paraffins Acceleration tests Chloride ions Constant acceleration Constant current acceleration Constant-current Corrosion influence factor Current acceleration Log-normal distribution Maximum-likelihood estimation Paraffin isolation layer
ISSN号	1005-023X
DOI	10.11896/cldb.21030289
英文摘要	In view of the characteristics of long durability test period and large data dispersion of reinforced concrete, high corrosive saline soil was selec-ted as conductive medium to design constant accelerated corrosion test. In this work, the deterioration process of the one-dimensional and the three-dimensional reinforced concrete specimens under double stress of constant current and corrosive ions was simulated. Electrochemical impedance spectroscopy (AC impedance) data, chloride ion content data, and microscopic and macroscopic morphology data were collected during the accelerated test. Meanwhile, a statistical model of corrosion degradation in constant acceleration test based on lognormal distribution was established. The results have shown that the paraffin protective layer can increase the average life of reinforced concrete under chloride stress, constant current stress, and double stress by 249 h, 268 h and 115 h, respectively.The constant current stress firstly acts on the reinforced concrete, and the appearance of penetrating crack accelerates the corrosion effect of chloride ion stress. Finally, the double stress superposition increases the corrosion deterioration rate of reinforced concrete. The deterioration model of constant addition test based on lognormal distribution can realize the quantitative analysis of the protective effect of paraffin, and the influence factors of paraffin under chloride ion, constant current and double stress are 0.41, 0.35 and 0.19, respectively. © 2022, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159068]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.College of Science & Technology Ningbo University, Ningbo; 315211, China
推荐引用方式 GB/T 7714	Shang, Minggang,Zhang, Yunsheng,He, Zhongmao,et al. Study on Corrosion Deterioration of Reinforced Concrete Under Constant Acceleration Test Based on Double Stress[J]. Cailiao Daobao/Materials Reports,2022,36(11).
APA	Shang, Minggang.,Zhang, Yunsheng.,He, Zhongmao.,Qiao, Hongxia.,Feng, Qiong.,...&Han, Zhao.(2022).Study on Corrosion Deterioration of Reinforced Concrete Under Constant Acceleration Test Based on Double Stress.Cailiao Daobao/Materials Reports,36(11).
MLA	Shang, Minggang,et al."Study on Corrosion Deterioration of Reinforced Concrete Under Constant Acceleration Test Based on Double Stress".Cailiao Daobao/Materials Reports 36.11(2022).