Experimental study on sulfate erosion resistance of nano-CaCO3 modified concrete

doi:10.1139/cjce-2020-0307

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	Experimental study on sulfate erosion resistance of nano-CaCO3 modified concrete
	Qiao, Hongxia 1,2; Hakuzweyezu, Theogene 1; Yang, Bo 1; Li, Kan 1
刊名	Canadian Journal of Civil Engineering
	2022
卷号	49 期号:4 页码:590-596
关键词	Calcite Calcium carbonate Carbonation Concrete buildings Concrete construction Concretes Deterioration Elastic moduli Electrochemical corrosion Erosion Portland cement Quality control Scanning electron microscopy Soil cement Sulfur compounds Cement concrete Erosion resistance Evaluation parameters Modified concrete Nano-modified concrete Resistance Saline soil Soil environment Sulfate erosion Western China
ISSN号	0315-1468
DOI	10.1139/cjce-2020-0307
英文摘要	In the saline soil environment of western China, salts can corrode ordinary cement concrete seriously, and the durability of concrete structure deteriorates gradually until it fails. This impedes the application of ordinary Portland cement concrete in this area. Aiming at the problem of the short service life of concrete in the harsh environment of western China, this study examines the performance of nano-CaCO3 modified concrete in a sulfate environment. The durability of the concrete was evaluated by the apparent phenomena on the relative quality evaluation parameter, the relative dynamic elastic modulus evaluation parameter, and the comprehensive damage evaluation parameter. The microstructure of corroded products was investigated using scanning electron microscopy to reveal the deterioration mechanism. The results show that the addition of 1% nano-CaCO3 can enhance the resistance of concrete to sulfate corrosion, and the service life of concrete structures will increase significantly. © 2021 The Author(s).
语种	英语
出版者	Canadian Science Publishing
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158059]
专题	土木工程学院
作者单位	1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Qiao, Hongxia,Hakuzweyezu, Theogene,Yang, Bo,et al. Experimental study on sulfate erosion resistance of nano-CaCO3 modified concrete[J]. Canadian Journal of Civil Engineering,2022,49(4):590-596.
APA	Qiao, Hongxia,Hakuzweyezu, Theogene,Yang, Bo,&Li, Kan.(2022).Experimental study on sulfate erosion resistance of nano-CaCO3 modified concrete.Canadian Journal of Civil Engineering,49(4),590-596.
MLA	Qiao, Hongxia,et al."Experimental study on sulfate erosion resistance of nano-CaCO3 modified concrete".Canadian Journal of Civil Engineering 49.4(2022):590-596.