2019 Fiscal Year Final Research Report
Binderless type geopolymer concrete with industrial wastes
| Project/Area Number |
17K00628
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental conscious materials and recycle
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| Research Institution | Nihon University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
佐藤 正己 日本大学, 理工学部, 准教授 (50580164)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | 産業系副産物 / ジオポリマー / フライアッシュ / シリカフューム / ポゾラン反応 |
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| Outline of Final Research Achievements |
The aim of this study was to prepare geopolymer concrete without cement or other bonding materials (binder) from industrial by-products. It was found that the silica gel produced by the reaction (pozzolanic reaction) is expansive, and that the initial matrix formation ability is a little weak, although it is effective to fill the voids after the molded body forms a skeleton (matrix), through the trial manufacture of paste materials consisting of fly ash and silica fume.
In order to obtain the cured material without the use of binder material, it was found that either the entire cured material should be completely restrained by a formwork or the initial pozzolanic reaction should be more closely controlled so that the matrix can be formed with a silicate gel.
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| Free Research Field |
環境素材工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は産業系副産物を主原料としたジオポリマー硬化体の作製を目的としたもので，廃棄物の有用再資源化の観点から，今後の循環型社会を形成していく上で極めて重要な課題となる。また低炭素社会を目指す点からも，セメントを利用しない構造体の製造は今後益々需要が増えてくることが予想され，近い将来での実現化が望まれる。
ただし，いわゆる「廃棄物」を有用資源として有効活用するためには，材料そのものの化学的な物性の理解をすることは必須であり，それらを上手く組み合わせた材料設計を行わないと構造体の形成に至らない可能性があることが知見として得られた。
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