2013 Fiscal Year Research-status Report
モンゴル産フライアッシュの有効利用に関する総合的調査
| Project/Area Number |
25303004
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Section | 海外学術 |
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| Research Institution | Tohoku University |
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Principal Investigator |
プシュパラール ディニル 東北大学, 国際文化研究科, 教授 (10361148)
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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 |
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| Research Abstract |
1.Chemical analysis of five different Mongolian fly ashes was done. Accordingly, a large difference of SiO2 and CaO contents was found. Large difference of insoluble matter content in hydrochloric acid was also found. However, compressive strength dependence on these chemical properties was not yet understood.
2.With only the specific type of fly ash, the flow properties of concrete increases with increasing the fly ash replacement ratio. It gives advantages of reducing water content and admixture, basically making concrete stronger and economical.
3.In general, fly ash replacement up to 60% of total cementitious content gives fairly similar strength properties with control mix proportion.
4.While early strength of all fly ash incorporated mixtures is lower than the control, 30% and 40% fly ash replaced mixtures have shown slightly accelerated strength development after 7 days, overpassing the control concrete.
5.40% fly ash replacement is the ideal dosage, which gives the highest strength, while dramatically reducing the CO2 emission. Such concrete emits only 197 kg/m3 of CO2 due to cement use that is more than 40% reduction with compare to control concrete.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
Because, more than 70% of planned research was satisfactorily finished.
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| Strategy for Future Research Activity |
1.Investigate the compressive strength dependence on the chemical properties of Mongolian fly ash.
2.Making a model which is able to predict compressive strength for given type of fly ash.
3.Investigate the awareness of fly ash utilization of stakeholders.
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| Expenditure Plans for the Next FY Research Funding |
Delay of receiving the ordered chemical reagents
Buying chemical reagents
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