Research on the resistivity of port & harbor RC structures using blast furnace slag cement against chloride attack
| Project/Area Number |
23560548
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
OTSUKI Nobuaki 東京工業大学, 理工学研究科, 教授 (40211106)
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| Co-Investigator(Kenkyū-buntansha) |
SAITO Tsuyoshi 東京工業大学, 大学院理工学研究科, 助教 (90452010)
NISHIDA Takahiro 東京工業大学, 大学院理工学研究科, 助教 (10345358)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 高炉セメント / 港湾ＲＣ / 塩害抵抗性 / 港湾RC / 港湾RC構造物 / 塩害 |
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| Research Abstract |
This research investigated the effectiveness of blast furnace cement in port structures. In order to achieve the above objective, (1) field surveys of port RC structures with blast furnace cement, (2) field surveys of port RC structures with Ordinal Portland cement, (3) laboratory test, and (4)exposure test were conducted. From the results of this study, the chloride ion diffusivity and corrosion speed of steel bar in concrete were largely depending on the kinds of cements. The incubation periods and the lifetime of reinforced concrete with blast furnace cement was 2 and 4 times longer than that with ordinary Portland cement respectively against chloride attack. It was considered that these effects were provided by the chloride immobilization and low Oxygen permeability of concrete with blast furnace cement.
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Report
(4 results)
Research Products
(22 results)
