2014 Fiscal Year Final Research Report
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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| 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 |
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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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| Free Research Field |
コンクリート工学 構造工学
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