Dynamic structural response depending on change and movement of pore water in concrete
| Project/Area Number |
24686054
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Hosei University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
BENNY Suruyanto Institute for Infrastructure and Environment, Assistant Professor
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥26,260,000 (Direct Cost: ¥20,200,000、Indirect Cost: ¥6,060,000)
Fiscal Year 2014: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2012: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
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| Keywords | コンクリート / ひずみ速度 / 細孔構造 / 凝縮水 / 動的応答 / RC梁 / ひずみ速度依存性 / 水圧 / 含水率 / 粘性 / 負圧 / 圧力変動 |
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| Outline of Final Research Achievements |
This study investigates the influence of condensed water in concrete on the fracture mechanism of a concrete structure. The focus of this study is water pressure in concrete pores under loading with a high strain rate. First, uniaxial compression tests of saturated cylinder specimens containing various types of micro pore structures were conducted with different strain rates. The saturated concretes, especially those of low water-cement ratios, increased compression strength with increasing strain rate. Second, bending tests of rectangular beam specimens with and without rebar were conducted with different strain rates. As the strain rate increased, plain concretes and reinforced concretes showed an increase in tensile strength. These results suggest that dynamic responses of concrete structures are influenced by the strain rate dependency of material that is correlated with water content and micro pore structure.
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Report
(4 results)
Research Products
(20 results)
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[Book] Life-Cycle of Structural Systems: design, assessment, maintenance and management2014
Author(s)
Editor(Hitoshi Furuta, Dan M. Frangopol and Mitsuyoshi Akiyama)，Author(R. Matsushima, K. Matsuda, M. Yokota, T. Maeshima, Y. Koda, K. Oyamada, I. Iwaki, K. Matsumoto, H. Yamagishi, S. Tsuchiya, Y. Tanaka, T. Sudoh, C. Fujiyama, T. Kaji, Y. Ogiyama, A. Kamiharako, et al.)
Total Pages
433
Publisher
CRC press
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