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Accelerated Life Testing of Reinforced Concrete Based on Performance Degradation and Reliability Modeling
Qiao, Hongxia1; Zhu, Binrong1; Feng, Qiong1; Desire, Ndahirwa1; Dong, Jinmei2
2018-05-01
发表期刊JOURNAL OF MATERIALS IN CIVIL ENGINEERING
卷号30期号:5
文章类型Article
摘要This paper proposes a design for a testing program for accelerated life testing of reinforced concrete in the sulfite saline soil area. According to the situation of saline soil area, a constant current was used to accelerate the corrosion of steel rebar, and the wet sand with complex salt solution was used as electrolyte. The accelerated life testing was carried out, and a certain amount of accelerated life data was collected using electrochemical technique. By using scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), and X-ray photoelectron spectroscopy (XPS), the microstructure and composition of corrosion products were analyzed. According to present codes, the critical corrosion current density of reinforced concrete was obtained. The linear model and exponential model were used to fit the average value of data corresponding to each time point respectively. Furthermore, based on the Wiener stochastic process, a reliability model for the degradation of reinforced concrete was established, and the accelerated life of reinforced concrete specimens was predicted. The results showed that the experimental scheme can effectively simulate the natural corrosion state of steel rebar in the sulfite saline soil area of western China. Corrosion current density can be used as the key factor for the durability deterioration of reinforced concrete specimens, and it can be used to judge the corrosion state of the reinforced concrete. Wiener stochastic process can effectively describe the durability degradation process of reinforced concrete specimens. By integrating the life data of the degradation process, the accelerated life reliability function established by this method can directly reflect the accelerated life of the specimen. The method is simple in calculation, and has certain value of popularization and application.
关键词Reinforced Concrete Accelerated Life Testing Constant Current Electrochemical Technique Wiener Process Reliability
WOS标题词Science & Technology ; Technology
关键词[WOS]ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY ; STEEL REINFORCEMENT ; CORROSION BEHAVIOR ; WIENER-PROCESS ; MILD-STEEL ; FLY-ASH ; CHLORIDE ; POLARIZATION ; PREDICTION ; BRIDGES
收录类别SCI
语种英语
WOS研究方向Construction & Building Technology ; Engineering ; Materials Science
WOS类目Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号WOS:000427963900003
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6434
专题青海盐湖研究所知识仓储
作者单位1.Lanzhou Univ Technol, Key Lab Disaster Prevent & Mitigat Civil Engn Gan, Lanzhou 730050, Gansu, Peoples R China
2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
推荐引用方式
GB/T 7714
Qiao, Hongxia,Zhu, Binrong,Feng, Qiong,et al. Accelerated Life Testing of Reinforced Concrete Based on Performance Degradation and Reliability Modeling[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2018,30(5).
APA Qiao, Hongxia,Zhu, Binrong,Feng, Qiong,Desire, Ndahirwa,&Dong, Jinmei.(2018).Accelerated Life Testing of Reinforced Concrete Based on Performance Degradation and Reliability Modeling.JOURNAL OF MATERIALS IN CIVIL ENGINEERING,30(5).
MLA Qiao, Hongxia,et al."Accelerated Life Testing of Reinforced Concrete Based on Performance Degradation and Reliability Modeling".JOURNAL OF MATERIALS IN CIVIL ENGINEERING 30.5(2018).
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