Challenge to reduce drying shrinkage of concrete aggregate focused on clay minerals in rock
| Project/Area Number |
15K14061
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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 |
Building structures/Materials
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| Research Institution | Tohoku University |
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Principal Investigator |
Igarashi Go 東北大学, 工学研究科, 助教 (10733107)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | コンクリート / 岩石 / 体積変化 / ひび割れ / 粘土鉱物 / 親水性 / 水蒸気吸着 / 拡張BET理論 / 骨材 / 促進温度 / 湿潤養生 / 蛍光観察 / アルカリシリカ反応 / アルカリシリカゲル / 湿度 / 膨潤 / 乾燥収縮 / トバモライト |
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| Outline of Final Research Achievements |
It should be recommended to evaluate whether a rock is better suited for as a concrete aggregate from the view point of petrography in order to calculate/ control the volume shrinkage and expansion of concrete and the cracks due to the volume changes. In this study, it is focused on that calculate/ control of volume change of concrete mainly based on the mechanism of drying shrinkage due to the shrinkage/ swelling of layered structure of clay minerals in rocks. As a result, it is suggested that there are three kind of hydrophile adsorbed sites in tobermorite analyzed with modified BET theory.
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Report
(3 results)
Research Products
(13 results)
