2010 Fiscal Year Final Research Report
Evaluation on structural performance of RC bridge deck subjected to chloride-induced deterioration and frost damage by large-scale chamber controlling temperature and humidity
| Project/Area Number |
20360205
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Nihon University |
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Principal Investigator |
IWAKI Ichiro Nihon University, 工学部, 教授 (20282113)
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| Co-Investigator(Kenkyū-buntansha) |
KODA Yasuhiro 日本大学, 工学部, 准教授 (40328696)
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| Co-Investigator(Renkei-kenkyūsha) |
KAMIHARAKO Akihisa 弘前大学, 理工学研究科, 助教 (70333713)
NAITO Hideki 東北大学, 工学研究科, 助教 (50361142)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 塩害 / 凍害 / 複合劣化 / 疲労 / RC床版 / 構造性能 / 大型環境試験装置 / 輪荷重走行試験 |
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| Research Abstract |
Using a large-scale chamber makes it possible to control temperature and humidity, the accelerated testing methods for giving RC bridge deck specimens chloride induced deterioration and frost damage were developed. Then, the fatigue durability for the specimens subjected to chloride induced deterioration, frost damage, and these combined deterioration were evaluated by wheel tracking load test. The experimental results revealed that the fatigue durability of RC bridge deck was remarkably reduced by chloride induced deterioration. Further, it was recognized that the fatigue durability of RC bridge deck depends on the corrosion of the upper reinforcement while the static load carrying capacity of RC members depends on that of the lower reinforcement.
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