| Project/Area Number |
16K18191
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Building structures/Materials
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| Research Institution | The University of Kitakyushu |
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Principal Investigator |
Suyama Hiroki 北九州市立大学, 国際環境工学部, 准教授 (20507876)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | コンクリート工事 / 充填不良 / ジャンカ / モルタル逸失モデル / 施工不良 / 逸失モルタルモデル / 建築材料・施工 / コンクリート |
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| Outline of Final Research Achievements |
As a model for defective filling, I propose a mortar loss model in which the mortar component of concrete falling freely down into a frame is considered to adhere to rebar inside the frame. Concrete arriving at the bottom of the frame thus contains an excess amount of coarse aggregate, a situation considered prone to defective filling. Under the mortar loss model, I clarified the effect of concrete mix proportion, concrete flow quantity and rebar arrangement on the amount the mortar loss through the experiments. I considered the vibrational energy to eliminate the risk of defective filling on the concrete containing an excess amount of coarse aggregate. Finally, I apply my measurements to a wall construction case study and, within it, estimate the risk of defective concrete filling.
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