2018 Fiscal Year Final Research Report
Evaluation of compaction degree based on the information on concrete surface during vibration compaction of concrete
| Project/Area Number |
16K14295
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Nagaoka National College of Technology |
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Principal Investigator |
MURAKAMI YUKI 長岡工業高等専門学校, 環境都市工学科, 准教授 (70509166)
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| Co-Investigator(Kenkyū-buntansha) |
外山 茂浩 長岡工業高等専門学校, 電子制御工学科, 教授 (60342507)
上村 健二 長岡工業高等専門学校, 電子制御工学科, 准教授 (80708090)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | 締固め / 技能 |
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| Outline of Final Research Achievements |
In this study, we conducted the evaluation of compaction degree based on the time change in brightness value on concrete surface during vibration compaction of concrete.As a result, the brightness value on concrete surface increases as the compaction energy increases. This tendency does not depends on concrete mixture and the existence of rebar. Moreover, the relationship between the brightness and compaction energy with multiple times compaction is almost same as an one time compaction.There is a possibility that the degree of compaction can be quantitatively evaluated from the brightness value of the concrete surface.
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| Free Research Field |
コンクリート工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究成果により，これまで作業員の暗黙知であったコンクリートの締固め判断が可視化され，作業員の技能に依存することなく適切な締固め判定が実現できる可能性がある。打ち込み面の輝度情報に基づくことで，面的な締固め評価が可能であることも大きな成果である。本研究の成果により，誰もが卓越した技能を必要とすることなく，コンクリートの適切な締固め判定が可能となり，このことは社会的に大きな意義を持つ。
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