Accelerated Life Testing of Reinforced Concrete Based on Performance Degradation and Reliability Modeling

doi:10.1061/(ASCE)MT.1943-5533.0002225

ISL OpenIR > 青海盐湖研究所知识仓储

	Accelerated Life Testing of Reinforced Concrete Based on Performance Degradation and Reliability Modeling
	Qiao, Hongxia; Zhu, Binrong; Feng, Qiong; Desire, Ndahirwa; Dong, Jinmei
	2018-05
发表期刊	JOURNAL OF MATERIALS IN CIVIL ENGINEERING
ISSN	0899-1561
卷号	30 期号:5
关键词	Reinforced Concrete Accelerated Life Testing Constant Current Electrochemical Technique Wiener Process Reliability
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.
DOI	10.1061/(ASCE)MT.1943-5533.0002225
语种	英语
引用统计
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
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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