| 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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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | コンクリート / 亜硝酸イオン / 腐食抑制剤 / 鉄筋腐食 / 亜硝酸リチウム / マクロセル腐食 |
|---|
| 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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