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Effect of Ca(OH)(2), NaCl, and Na2SO4 on the corrosion and electrochemical behavior of rebar
Jin Zuquan1; Zhao Xia2; Zhao Tiejun1; Hou Baorong2; Liu Ying1
2017-05-01
发表期刊CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号35期号:3页码:681-692
文章类型Article
摘要The corrosion of rebar in reinforced concrete in marine environments causes significant damage to structures built in ocean environments. Studies on the process and mechanism of corrosion of rebar in the presence of multiple ions may help to control damage and predict the service life of reinforced concrete structures in such environments. The effect of interactions between sulfate and chloride ions and calcium hydroxide on the electrochemical behavior of rebar are also important for evaluation of structure durability. In this work, electrochemical impedance spectroscopy (EIS) plots of rebar in Ca(OH)(2) solution and cement grout, including NaCl and Na2SO4 as aggressive salts, were measured for diff erent immersion times. The results show that corrosion of rebar was controlled by the rate of charge transfer as the rebar was exposed to chloride solution. In the presence of high concentrations of sulfate ions in the electrolyte, generation and dissolution of the passive film proceeded simultaneously and corrosion was mainly controlled by the diff usion rate. When Na2SO4 and NaCl were added to Ca(OH)(2) solution, the instantaneous corrosion rate decreased by a factor of 10 to 20 as a result of the higher pH of the corroding solution.
关键词Rebar Corrosion Chloride Sulfate Electrochemical Impedance Spectroscopy
DOI10.1007/s00343-017-5319-y
收录类别SCI
语种英语
WOS记录号WOS:000399168400023
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文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136716
专题海洋腐蚀与防护研究发展中心
海洋地质与环境重点实验室
作者单位1.Qingdao Univ Technol, Coll Civil Engn, Qingdao 266033, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
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Jin Zuquan,Zhao Xia,Zhao Tiejun,et al. Effect of Ca(OH)(2), NaCl, and Na2SO4 on the corrosion and electrochemical behavior of rebar[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2017,35(3):681-692.
APA Jin Zuquan,Zhao Xia,Zhao Tiejun,Hou Baorong,&Liu Ying.(2017).Effect of Ca(OH)(2), NaCl, and Na2SO4 on the corrosion and electrochemical behavior of rebar.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,35(3),681-692.
MLA Jin Zuquan,et al."Effect of Ca(OH)(2), NaCl, and Na2SO4 on the corrosion and electrochemical behavior of rebar".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 35.3(2017):681-692.
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