Sulfate attack resistance and reliability analysis of recycled aggregate concrete

doi:10.1680/jemmr.19.00131

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Sulfate attack resistance and reliability analysis of recycled aggregate concrete
	Li, Jiangchuan 1; Qiao, Hongxia 2; Guan, Lijuan 1; Zhu, Feifei 1
刊名	Emerging Materials Research
	2020-08-26
卷号	9 期号:3 页码:877-886
关键词	Aggregates Concretes Damage detection Elastic moduli Recycling Reliability analysis Scanning electron microscopy Sulfur compounds Dynamic elastic moduli Probabilistic methods Probability methods Recycled aggregate concrete Recycled coarse aggregate Recycled fine aggregates Reliability assessments Sulfate-attack resistances
ISSN号	20460147
DOI	10.1680/jemmr.19.00131
英文摘要	The aim of the present study is to investigate the effects of recycled coarse and fine aggregates on the resistance to sulfate (SO42-) attack of recycled concrete under dry-wet cycles. Six groups of different ratios of tests with coarse and fine aggregates were designed to determine the dynamic elastic modulus and mass loss of recycled aggregate concrete. A reliability analysis was carried out by using the Wiener probabilistic method; finally, the product was analyzed by scanning electron microscopy-X-ray diffraction microscopic test. The results show that in the process of sulfate attack, with the increase in the number of dry-wet cycles of sulfate, the relative dynamic elastic modulus and mass loss of recycled aggregate concrete show a trend of increasing first and then decreasing. The performance of the recycled coarse aggregate concrete specimens against sulfate dry-wet cycles is lower than that of the recycled fine aggregate concrete specimens. The use of recycled coarse aggregates results in a significant reduction in the resistance of concrete to sulfates until the concrete specimens are destroyed. The Wiener probability method can be used to effectively describe the degradation process of the sulfate resistance of recycled aggregate concrete specimens. This allows reliability assessment of the sulfate-resistant damage of recycled aggregate concrete and quantitative analysis so that its sulfate-resistant performance becomes more digital and predictable. © 2020 ICE Publishing: All rights reserved.
WOS研究方向	Materials Science
语种	英语
出版者	ICE Publishing
WOS记录号	WOS:000582600100035
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150821]
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, China; 2.Engineering Research Center, The W. Ministry of Education for Civil Engineering of Disaster Prevention and Disaster Reduction, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Li, Jiangchuan,Qiao, Hongxia,Guan, Lijuan,et al. Sulfate attack resistance and reliability analysis of recycled aggregate concrete[J]. Emerging Materials Research,2020,9(3):877-886.
APA	Li, Jiangchuan,Qiao, Hongxia,Guan, Lijuan,&Zhu, Feifei.(2020).Sulfate attack resistance and reliability analysis of recycled aggregate concrete.Emerging Materials Research,9(3),877-886.
MLA	Li, Jiangchuan,et al."Sulfate attack resistance and reliability analysis of recycled aggregate concrete".Emerging Materials Research 9.3(2020):877-886.