2015 Fiscal Year Final Research Report
Comprehensive Survey on Effective Utilization of Mongolian Fly Ash
| Project/Area Number |
25303004
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 海外学術 |
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| Research Field |
Environmental conscious materials and recycle
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
Matsumoto Toshifumi 共立女子大学, 家政学部, 教授 (70316454)
Saito Kiyoshi 桐蔭横浜大学, 医用工学部, 教授 (90225699)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | フライアッシュ / モンゴル / 圧縮強度 / Class C / Anhydrite / れんが / コンクリート / 環境負荷 |
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| Outline of Final Research Achievements |
The purpose of this study was to investigate the possibility of utilization of Mongolian fly ash in the construction industry. We have conducted the following studies under this research: 1. Interviews in Ulaanbaatar to understand current conditions of usage and the inhibition factors of dissemination of use of fly ash. 2. Research on the optimal mix proportion for fly ash brick industry 3. Experiments to find effect of anhydrite in fly ash in giving a high compressive strength.
We have obtained the following results:1. We have found that non-uniformity of fly ash and radioactivity of fly ash inhibit the usage. 2. Utilization of slag cement with the cement to calcium hydroxide ratio is 1.43 gives the optimum blend with the highest compressive strength and the lowest CO2emissions. 3. Fly ash with anhydrite gives the higher strength than fly ash without anhydrite at all ages. It has found that this optimum content of anhydrite in fly ash would be 1.5-2.5kg/m3 of concrete.
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| Free Research Field |
工学・環境材料
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