2019 Fiscal Year Final Research Report
Research and development of a stable recycled concrete admixture that effectively utilizes waste and by-products
| Project/Area Number |
15K06317
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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 |
Building structures/Materials
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| Research Institution | Gifu National College of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2020-03-31
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| Keywords | フライアッシュ / スラッジ / 有効利用 / ジオポリマー / メタけい酸ナトリウム / 無水クエン酸 / ガラス繊維 / 常温養生 |
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| Outline of Final Research Achievements |
In this study, an attempt was made to develop an alternative admixture to cement for the purpose of expanding the effective use of industrial wastes and by-products. As a result, we developed a new admixture that can be used to produce mortar and concrete in the same way as cement.
The mortar made from the developed admixture has a compressive strength of about 40 N/mm2 at room temperature and can be handled in the same way as cement mortar. In addition, the developed mortar can be used as a repair material mixed with glass fiber reinforcement because of its low alkalinity, which is different from that of cement.
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| Free Research Field |
コンクリート工学、建設材料学、維持管理工学
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| Academic Significance and Societal Importance of the Research Achievements |
石炭灰やコンクリートスラッジなどの産業廃棄物や副産物の有効利用を拡大することは，社会的意義は大きく資源循環型社会の形成に大いに資するといえる。また，開発した再生混和材はセメントの代替になり得るもので，セメント製造時に大量に発生するCO2の削減にも寄与すると考えられる。
開発した再生混和材はセメントと同様に取り扱うことができるので，学術的意義は大きい。また，アルカリ性が低いので，ガラス繊維などを補強材として混入したセメント系建材製品や補修材にも適用でき，新たな用途への適用にも期待がもてる。
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