IOCAS-IR  > 海洋环境腐蚀与与生物污损重点实验室
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
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
Volume35Issue:3Pages:681-692
SubtypeArticle
AbstractThe 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.
KeywordRebar Corrosion Chloride Sulfate Electrochemical Impedance Spectroscopy
DOI10.1007/s00343-017-5319-y
Indexed BySCI
Language英语
WOS IDWOS:000399168400023
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136716
Collection海洋环境腐蚀与与生物污损重点实验室
海洋地质与环境重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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