Effect of Ca(OH)_2, NaCl, and Na_2SO_4 on the corrosion and electrochemical behavior of rebar
文献类型：CNKI期刊论文
| 作者 | Jin ZQ(金祖权); Zhao X(赵霞) ; Zhao TJ(赵铁军); Hou BR(侯保荣); Liu Y(刘影)
|
| 发表日期 | 2017-05-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | rebar corrosion chloride sulfate electrochemical impedance spectroscopy |
| 英文摘要 | 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 Na_2SO_4 as aggressive salts, were measured for different 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 diffusion rate. When Na_2SO_4 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 p H of the corroding solution. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China(Nos.51178230,51378269,5142010501) ; the National Basic Research Program of China(973 Program)(No.2015CB655100) ; the Qingdao Science and Technological Foundation(Nos.13-1-4-176-jch,13-1-4-115-jch) |
| 卷 | v.35期:03页:215-226 |
| 语种 | 英文; |
| 分类号 | P755.3 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189313]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CollegeofCivilEngineering,QingdaoUniversityofTechnology 2.KeyLaboratoryofMarineEnvironmentalCorrosionandBio-fouling,InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Jin ZQ,Zhao X,Zhao TJ,et al. Effect of Ca(OH)_2, NaCl, and Na_2SO_4 on the corrosion and electrochemical behavior of rebar. 2017. |
入库方式： OAI收割
来源：海洋研究所
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