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Effect of chloride binding behavior of cement hydration products on chloride critical value of steel corrosion in the presence of Na+ and Ca2+

文献类型：期刊论文

作者Sun, Ming1,3; Sun, Congtao1,3; Liu, Xiangju3; Pan, Zihan2; Duan, Jizhou1,3; Hou, Baorong1,3
刊名JOURNAL OF BUILDING ENGINEERING
出版日期2024-10-01
卷号94页码:13
关键词Chloride binding Chloride critical value Associated cation C-S-H AFm
DOI10.1016/j.jobe.2024.109985
通讯作者Sun, Congtao(suncongtao@qdio.ac.cn) ; Hou, Baorong()
英文摘要To accurately predict the service life of concrete structures, the effect of chloride binding behavior of cement hydration products on steel corrosion should be taken into account. In this study, the steel specimen with cement paste coating were prepared to investigate the effect of chloride binding behavior on steel initial corrosion in the presence of Na+ and Ca2+. The results show that the higher pH level and Ca2+ concentration effectively inhibited the leaching C-S-H, while the Ca2+ increased the Ca/Si ratio of C-S-H, thereby enhancing the physical chloride binding capacity of cement paste coating in the CaCl2-Ns system (the addition of CaCl2 in NaOH solution). This enhancement primarily accounted for the higher critical value (Ccrit) of 0.03 mol/L in the CaCl2- Ns system, surpassing that of specimens exposed to other corrosion solutions, which was 0.01 mol/L. Both chloride ions from NaCl and CaCl2 could partially replace carbonate ions in monocarboaluminate (Mc), indicating that the cation type did not exert significant influence on chemical binding in this study.
WOS关键词CATION TYPE ; SALT-TYPE ; CONCRETE ; MODEL
资助项目National Natural Science Foundation of China[52378276] ; Guangxi Science and Technology Program[Guike AA23026007]
WOS研究方向Construction & Building Technology ; Engineering
语种英语
WOS记录号WOS:001260006200001
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/186401]  
专题海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者Sun, Congtao; Hou, Baorong
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Guangxi Acad Sci, Inst Marine Corros Protect, Guangxi Key Lab Marine Environm Sci, Nanning 530007, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Ming,Sun, Congtao,Liu, Xiangju,et al. Effect of chloride binding behavior of cement hydration products on chloride critical value of steel corrosion in the presence of Na+ and Ca2+[J]. JOURNAL OF BUILDING ENGINEERING,2024,94:13.
APA Sun, Ming,Sun, Congtao,Liu, Xiangju,Pan, Zihan,Duan, Jizhou,&Hou, Baorong.(2024).Effect of chloride binding behavior of cement hydration products on chloride critical value of steel corrosion in the presence of Na+ and Ca2+.JOURNAL OF BUILDING ENGINEERING,94,13.
MLA Sun, Ming,et al."Effect of chloride binding behavior of cement hydration products on chloride critical value of steel corrosion in the presence of Na+ and Ca2+".JOURNAL OF BUILDING ENGINEERING 94(2024):13.

入库方式： OAI收割

来源：海洋研究所

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