Three-dimensional characteristics of steel corrosion and corrosion-induced cracks in magnesium oxychloride cement concrete monitored by X-ray computed tomography

doi:10.1016/j.conbuildmat.2020.118504

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Three-dimensional characteristics of steel corrosion and corrosion-induced cracks in magnesium oxychloride cement concrete monitored by X-ray computed tomography
	Wang, Penghui 2; Qiao, Hongxia 1,2; Zhang, Yunsheng 2,3; Li, Yuanke 2; Chen, Kefan 2; Feng, Qiong 2
刊名	Construction and Building Materials
	2020-06-20
卷号	246
关键词	Computerized tomography Magnesium compounds Magnesium metallography Scanning electron microscopy Soil cement Steel corrosion Underground corrosion X rays 3D reconstruction Accelerated tests Magnesium oxychloride cement SEM test X-ray computed tomography
ISSN号	09500618
DOI	10.1016/j.conbuildmat.2020.118504
英文摘要	We investigated corrosion-induced crack formation of magnesium oxychloride cement concrete (MOCC) in saline soil. Accelerated corrosion of steel in MOCC occurred through an improved galvanostatic accelerated test. X-ray computed tomography, used to scan the MOCC after curing for 14 days, revealed surface cracks of 0.11 mm, 0.25 mm, and 0.44 mm. Steel corrosion, corrosion distribution and corrosion-induced cracks were investigated, using scanning electron microscope (SEM) study the interface transition zone of MOCC. Results show a good linear relationship between steel volume loss and an increase in crack width; a good exponential relationship between an increase in corrosion-induced crack volume and an increase in crack width; and a good exponential relationship between steel volume loss and an increase in the volume of corrosion products. Corrosion-induced cracks do not necessarily form in the direction of the corrosion distribution. The product of the interfacial transitional zones (ITZs) is needle-shaped, which causes the formation of a weak surface in the ITZs so that corrosion-induced cracks usually develop along those zones. © 2020 Elsevier Ltd
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000527309800055
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150995]
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.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; Gansu, China; 3.School of Materials Science and Engineering, Southeast University, Nanjing, China
推荐引用方式 GB/T 7714	Wang, Penghui,Qiao, Hongxia,Zhang, Yunsheng,et al. Three-dimensional characteristics of steel corrosion and corrosion-induced cracks in magnesium oxychloride cement concrete monitored by X-ray computed tomography[J]. Construction and Building Materials,2020,246.
APA	Wang, Penghui,Qiao, Hongxia,Zhang, Yunsheng,Li, Yuanke,Chen, Kefan,&Feng, Qiong.(2020).Three-dimensional characteristics of steel corrosion and corrosion-induced cracks in magnesium oxychloride cement concrete monitored by X-ray computed tomography.Construction and Building Materials,246.
MLA	Wang, Penghui,et al."Three-dimensional characteristics of steel corrosion and corrosion-induced cracks in magnesium oxychloride cement concrete monitored by X-ray computed tomography".Construction and Building Materials 246(2020).