Effect of network formation on interface settling property of clay floc suspension
| Project/Area Number |
24580348
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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 |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Ibaraki University |
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Principal Investigator |
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| Research Collaborator |
OOI SETSUO (前)農林水産省農村工学研究所, 資源循環工学研究領域, 研究員
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | フロック構造 / 粘土懸濁液 / 最疎充填 / 最密充填 / 完全充填 / 有効応力 / フロック / 撹拌振動 / 沈積層 / 構造転移 / 振動沈下 / 撹拌沈降 / 振動撹拌 / 界面沈降 / 静置沈降速度 / 相転移現象 / ネットワーク相 / 撹拌強度 / ネットワーク形成 |
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| Outline of Final Research Achievements |
The structure of floc dose not vary during settling process. This prediction by Michaels and Bolger was proved to be valid for only below the concentration of 0.74 volume fraction (maximum packing). This result means that the rigid sphere model can be applied for only below the volume fraction of 0.74. Therefore, the structure of floc seems to be strong in the settling process but the weak structures were found in the packing process. Those structures were network structure, minimum packing structure and maximum packing structure. These structures were rather stable for weak stress and were found to exist by the measurement of ultimate sediment volume.
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Report
(5 results)
Research Products
(7 results)
