| Project/Area Number |
21246069
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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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 | The University of Tokyo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KURASHIGE Isao 電力中央研究所, 地球工学研究所, 主任研究員 (20371461)
OKAZAKI Shinichiro 愛媛大学, 理工学研究科, 講師 (30510507)
YOSHIDA Ryo 名古屋工業大学, 工学研究科, 助教 (40548575)
安 台浩 東京大学, 生産技術研究所, 准教授 (20520191)
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| Co-Investigator(Renkei-kenkyūsha) |
MATSUDA Yoshinori 東日本旅客鉄道(株), 建設工事部構造技術センター, 副課長 (20520977)
UEDA Hiroshi 鉄道総合研究所, 材料研究部, 室長 (80426056)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥46,280,000 (Direct Cost: ¥35,600,000、Indirect Cost: ¥10,680,000)
Fiscal Year 2011: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2010: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2009: ¥20,670,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥4,770,000)
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| Keywords | コンクリート / 耐久性 / かぶり / 表層品質 / 耐久設計 / 検査 / 透気試験 / 品質 / 透気性 / 竣工検査 |
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| Research Abstract |
It is pointed out that it is important to conduct direct inspection on surface quality of cover concrete in order to assure the effectiveness of durability design for structures. It is also found that chloride ion ingress into concrete does not necessarily follow the fick’s difussion law and is often stagnated at certain position in depth. It is also proved by a series of optical experiments using micro-nano combined glass chip that the electric double layer blocks difusion of chloride ion in micro pores of concrete in unsaturated deeper zone.
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