2013 Fiscal Year Final Research Report
Development of LiNO2 Injection Method Considering Macrocell Corrosion
| Project/Area Number |
24656270
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Kyoto University |
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Principal Investigator |
TOYOAKI MIYAGAWA 京都大学, 工学(系)研究科(研究院), 教授 (80093318)
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| Co-Investigator(Kenkyū-buntansha) |
山本 貴士 京都大学 (70335199)
高谷 哲 京都大学 (40554209)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | コンクリート / 亜硝酸イオン / 腐食抑制剤 |
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| Research Abstract |
In this study,at first,corrosion preventing mechanism of nitrite ion was investigated. As a result, it was made clear that nitrite ion control anode reaction and consequently keep corrosion potential noble. The fact means there is possibility macrocell corrosion occur in case difference of nitrite ion concentration exist on the same steel bar. Then, influence of nitrite ion concentration on macrocell corrosion was also investigated. As a result, it was made clear risk of macrocell corrosion is little because concrete resistance is sufficiently high.
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