Numerical and experimental study of moisture and chloride transport in unsaturated concrete

doi:10.1016/j.conbuildmat.2018.08.158

	Numerical and experimental study of moisture and chloride transport in unsaturated concrete
	Sun, Congtao 1,2; Yuan, Liqiang 3; Zhai, Xiaofan 1,2; Qu, Feng 3; Li, Yantao 1,2; Hou, Baorong 1,2
	2018-11-20
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
卷号	189 页码:1067-1075
通讯作者	Sun, Congtao(sunct0830@sina.com)
摘要	Based on the establishment of a moisture transport model, a prediction model for chloride transport in unsaturated concrete was developed. The moisture transport model considers both the diffusion of water vapor and seepage of liquid water in concrete under drying-wetting conditions. The moisture transport model was verified by wetting and drying tests. In the transport model of chloride ions, both diffusion and convection were considered. Tests of specimens under drying-wetting cycles with four types of cycles were carried out to verify the chloride transport model. Furthermore, a new device was developed to mimic tidal and splash zones of a marine environment to achieve different time ratios of drying wetting. The measured results of chloride content corresponded with the simulated results. The results showed that the chloride content in concrete displayed no relationship with the ratio of drying and wetting times. The chloride content of concrete in mimicked tidal and splash zones significantly varied with height, especially in the surface layer of concrete, and the chloride content of concrete at the junction of the splash and tidal zones was the highest. (C) 2018 Published by Elsevier Ltd.
关键词	Numerical simulation Unsaturated concrete Chloride transport Moisture transport
DOI	10.1016/j.conbuildmat.2018.08.158
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51108442] ; National Natural Science Foundation of China[51108442]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000449133200099
出版者	ELSEVIER SCI LTD
引用统计	被引频次：44[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/156589
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Sun, Congtao
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao 266000, Peoples R China 3.Hunan Univ Sci & Technol, Coll Civil Engn, Xiangtan 411100, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Sun, Congtao,Yuan, Liqiang,Zhai, Xiaofan,et al. Numerical and experimental study of moisture and chloride transport in unsaturated concrete[J]. CONSTRUCTION AND BUILDING MATERIALS,2018,189:1067-1075.
APA	Sun, Congtao,Yuan, Liqiang,Zhai, Xiaofan,Qu, Feng,Li, Yantao,&Hou, Baorong.(2018).Numerical and experimental study of moisture and chloride transport in unsaturated concrete.CONSTRUCTION AND BUILDING MATERIALS,189,1067-1075.
MLA	Sun, Congtao,et al."Numerical and experimental study of moisture and chloride transport in unsaturated concrete".CONSTRUCTION AND BUILDING MATERIALS 189(2018):1067-1075.

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