| Project/Area Number |
24656318
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Building structures/materials
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| Research Institution | Muroran Institute of Technology |
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Principal Investigator |
HAMA YUKIO 室蘭工業大学, 工学(系)研究科(研究院), 教授 (70238054)
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| Co-Investigator(Kenkyū-buntansha) |
KISHIMOTO Yoshihiko 室蘭工業大学, 工学研究科, 助教 (30435987)
ATARASHI Daiki 東京工業大学, 理工学研究科, 助教 (70431393)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | コンクリート / モルタル / 高性能化 / 多孔質粉体 / 空気連行 / 耐凍害性 / 強度低下 / 建築構造・材料 |
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| Research Abstract |
In this study, the aim is to develop a non-air entrainment and internal hydrophobic porous powder in order to establish a new technique which can contribute to improve the frost resistance and reduce the strength reduction due to entrained air bubbles caused in AE concrete.
As a result, when ALC was used for the material of the porous powder, it was possible to control the water repellency and the adsorption properties of water vapor by changing the addition rate and type of silicone oil, ultraviolet treatment and adsorption of hydrophilic agent to the powder surface. But it was difficult to make a porous powder having hybrid properties of the hydrophilic surface and internal hydrophobic capillary.
On the other hand, when the hardened cement paste with low W/C was used for the material of the porous powder, even without water repellency, there was no air-entraining and it was possible to reduce the strength reduction and improve the frost resistance of mortar.
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