| Project/Area Number |
16K06585
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Building structures/Materials
|
|---|
| Research Institution | Institute of Technologists |
|---|
Principal Investigator |
Otsuka Shuzo ものつくり大学, 技能工芸学部, 教授 (00458605)
|
|---|
| Project Period (FY) |
2016-04-01 – 2019-03-31
|
| Project Status |
Completed (Fiscal Year 2018)
|
| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
|---|
| Keywords | 静的破砕工法 / コンクリート用膨張材 / 膨張モルタル / 膨張圧 / 小型試験体 / 模擬床部材 / 解体工法 / 配筋 / 温度依存性 / 充填径 / 静的破砕剤 / 最高温度 / フロー値 / 建築構造・材料 / 土木材料 |
|---|
| Outline of Final Research Achievements |
In this study, the static fracture method of concrete structure using expansion mortar was examined, and the following matters were clarified.1) Measurement method of expansion pressure of expansion mortar : The applicability of the outer tube method is examined as a method of measuring static fracture agents, and it can also be applied to expansion mortars.2)Basic characteristics of expansion mortar : The effects of adjustment, temperature and volume on expansion pressure behavior and temperature characteristics of expansion mortar are examined, and expansion pressure is high in proportion to the amount of expansion mortar, and reaction heat does not impair workability even in a hot environment.3) Crushing behavior of small specimens and simulated floor members : The fracture behavior depends on the base concrete strength, filling diameter of expansion mortar, filling interval and filling depth.
|
| Academic Significance and Societal Importance of the Research Achievements |
コンクリート構造物の解体工法は，重機や専用機械，ダイナマイトを用いた工法と静的破砕剤を用いた工法に大別できる。前者では，騒音，振動および粉塵が生じるため周辺環境へ及ぼす影響が大きく，施工の安全性確保の点から難がある。後者では，破砕剤の噴出現象が生じる場合があることに加え，破砕剤が高コストである。本研究では破砕剤よりも低コストであるコンクリート用膨張材を混和した膨張モルタルによる解体工法を検討した。膨張モルタルは，破砕に足る膨張圧を生じることができる一方で，膨張に伴う反応熱，騒音や粉塵の発生を抑制でき，施工の安全性確保と周辺環境保全に有効となる可能性が予見される。
|
