Three-dimensional characteristics of steel corrosion and corrosion-induced cracks in magnesium oxychloride cement concrete monitored by X-ray computed tomography | |
Wang, Penghui2; Qiao, Hongxia1,2; Zhang, Yunsheng2,3; Li, Yuanke2; Chen, Kefan2; Feng, Qiong2 | |
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). |
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