Reliability Analysis of Freeze-thaw Damage of Ceramic Powder Recycled Concrete

doi:10.11896/cldb.19040278

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	Reliability Analysis of Freeze-thaw Damage of Ceramic Powder Recycled Concrete
	Qiao, Hongxia 1,2; Peng, Kuan 1; Chen, Kefan 1; Li, Jiangchuan 1; Zhu, Xiangchen 1
刊名	Cailiao Daobao/Materials Reports
	2020-05-25
卷号	34 期号:5 页码:10035-10040
关键词	Concrete aggregates Concretes Freezing Nuclear magnetic resonance Porosity Powders Recycling Reliability theory Thawing Dynamic modulus of elasticity Freeze-thaw cycles Freeze-thaw resistance Nuclear magnetic resonance(NMR) Porosity distributions Recycling efficiency Relative dynamic modulus Reliability calculation
ISSN号	1005023X
DOI	10.11896/cldb.19040278
英文摘要	In order to improve the recycling efficiency of waste ceramic powder, aiming at the poor frost resistance of recycled concrete, the effect of ceramic powder on the freeze-thaw resistance of recycled concrete under different substitution rates was studied. Six groups of mixtures with ceramic powder substitution rates of 0%, 10%, 20%, 30%, 40% and 50% were designed. Before the test, based on the principle of nuclear magnetic resonance (NMR), the porosity distribution, porosity and permeability of each group of specimens were calculated, and the relationship between porosity and permeability of recycled concrete with ceramic powder was established by using MATLAB. After each freeze-thaw cycle, the mass loss rate and relative dynamic modulus of each group of specimens were measured. Based on Palmgren theory, the reliability calculation model of freeze-thaw damage is established, and the residual life of each group of specimens is predicted. The results show that the dynamic modulus of elasticity decreases, the mass loss rate increases first and then decreases. When the replacement rate of ceramic powder is 20%, the porosity and permeability of recycled concrete with ceramic powder are the smallest, and the freeze-thaw cycle resistance is the strongest. In addition, the reliability calculation model of freeze-thaw damage based on Palmgren model has high reliability, which can directly reflect the relationship between the reliability of recycled ceramic powder concrete and freeze-thaw cycle, and has good applicability in practical application. © 2020, 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/150823]
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Reduction in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Qiao, Hongxia,Peng, Kuan,Chen, Kefan,et al. Reliability Analysis of Freeze-thaw Damage of Ceramic Powder Recycled Concrete[J]. Cailiao Daobao/Materials Reports,2020,34(5):10035-10040.
APA	Qiao, Hongxia,Peng, Kuan,Chen, Kefan,Li, Jiangchuan,&Zhu, Xiangchen.(2020).Reliability Analysis of Freeze-thaw Damage of Ceramic Powder Recycled Concrete.Cailiao Daobao/Materials Reports,34(5),10035-10040.
MLA	Qiao, Hongxia,et al."Reliability Analysis of Freeze-thaw Damage of Ceramic Powder Recycled Concrete".Cailiao Daobao/Materials Reports 34.5(2020):10035-10040.