2009 Fiscal Year Final Research Report
Investigation of system construction utilizing the Yellow River sediments
| Project/Area Number |
19404011
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
ISHIDA Hideki Tohoku University, 大学院・環境科学研究科, 教授 (10396468)
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| Co-Investigator(Kenkyū-buntansha) |
MAEDA Hirotaka 東北大学, 大学院・環境科学研究科, 助教 (20431538)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 環境材料 / 環境対応 / 土木環境システム |
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| Research Abstract |
The Yellow River is worldwide well-known for its high sediment concentration. In this study, we investigated a potential utilization of the riverbed sediments as a raw material for synthesis of bricks and building constructions. Hydrothermal solidification of the riverbed sediments was carried out under saturated steam pressure at 343-476K for 24h by calcium hydrate introduction or using the calcined sediments. The flexural strength of the solidified sediments reached over 20MPa. The hardening mechanism of the hydrothermally solidified sediments consisted in formation of calcium silicate hydrates during the reaction.
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