Development of a new recycling process of the aggregate recovered from waste concrete
| Project/Area Number |
23656484
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 粉粒体操作 / リサイクル / 骨材 / 廃コンクリート / 酸溶液 / 劣化反応 / 撹拌ミル / コンクリート / 骨材分離 / 粉砕操作 / 分離度 |
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| Research Abstract |
A new recycling process of the aggregate from waste concrete was suggested by using the chemical degradation of concrete and the grinding operation. After the waste concrete was immersed into some acid solutions and then was ground autogenously by a stirred-mill, the recovery ratio of the aggregate was investigated. The results were revealed that the recovery ratio increased effectively with the acid immersion, and especially was attained to about 70% in the case of a nitric acid immersion. The aggregate recovered was also confirmed to be high quality aggregate without usage restrictions.
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Report
(3 results)
Research Products
(2 results)
