Pulsed power and related technology for reduction of radioactive contaminated concrete waste
| Project/Area Number |
16H04390
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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 | 一般 |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Kumamoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
浪平 隆男 熊本大学, パルスパワー科学研究所, 准教授 (40315289)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Keywords | 放射性汚染コンクリート / 放射性廃棄物減容化 / 再生骨材 / 高度再生処理 / パルスパワー / 廃炉 / セシウム / 環境修復 / 放射能 / 廃棄物処理 / 土木材料 / 建築構造・材料 / 廃棄物再資源化 / 放射線 / 放射能汚染コンクリート / 放射能除染 / パルスパワー技術 / 福島第一原子力発電所 / 放射性セシウム / 汚染質除去技術 / コンクリート / 再資源化 / 復旧・復興工学 / 環境保全 |
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| Outline of Final Research Achievements |
After the accident in the Fukushima Dai-ichi Nuclear Power Plant. There are also concerns that a large amount of radioactive concrete waste will be generated due to the decommissioning in the future. Although conventional techniques are effective in decontaminating concrete floors and walls, it is not clear what techniques to apply for decontaminating radioactive concrete debris.
In this study, focusing on a pulsed power discharge technique, its applicability of the technique was evaluated to decontaminate radioactive concrete debris using those generated associated with the accident in the Fukushima Dai-ichi Nuclear Plant. Decontamination of concrete by the technique using the pulsed power discharge was evaluated. Results have suggest that the separation into aggregate and sludge of he contaminated concrete debris could achieve decontamination and volume reduction of the radioactive concrete debris.
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| Academic Significance and Societal Importance of the Research Achievements |
既存のコンクリート除染技術は，床や壁等のフラットな表面形状を対象としたものがほとんどであり，表層や浸透層を物理的・機械的に切削，破砕して除染するものが多い。これらの技術は，諸外国の原子炉解体や除染作業で遠隔装置化され実証されている技術である。一方で，瓦礫等の複雑形状の廃棄物を除染する技術は事例が少なく，機械的除染では容易に近づけるフラットな表面に対して有効で，裂け目，接続部や接近を制限された場所の除染は困難または不可能でる。しかし汚染した部位を除去して汚染していない骨材の高度再生処理技術としてパルスパワー援用による本技術はコンクリートの形状に拘らず適用できる世界初の除染技術として期待される。
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Report
(4 results)
Research Products
(16 results)
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[Journal Article] Performance of alkali-activated fly ash incorporated with GGBFS and micro-silica in the interfacial transition zone, microstructure, flowability, mechanical properties and drying shrinkage2017
Author(s)
Yuyun Tajunnisa, Masaaki Sugimoto, Takahiro Uchinuno, Takahiro Sato, Yoshinori Toda, Arisa Hamasaki, Toru Yoshinaga, Kenji Shida, Mitsuhiro Shigeishi
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Journal Title
AIP Conference Proceedings
Volume: 1887(1): 020034
Pages: 1-11
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] パルスパワー技術によるコンクリート瓦礫の除染・減容処理に関する研究2017
Author(s)
坂本浩幸, 赤木洋介, 山田一夫, 舘幸男, 福田大祐, 石松宏一, 松田樹也, 齋藤希, 上村実也, 浪平隆男, 重石光弘
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Journal Title
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Performance of alkali-activated fly ash incorporated with GGBFS and micro-silica in the interfacial transition zone, microstructure, flowability, mechanical properties and drying shrinkage2017
Author(s)
Yuyun Tajunnisa, Masaaki Sugimoto, Takahiro Uchinuno, Takahiro Sato, Yoshinori Toda, Arisa Hamasaki, Toru Yoshinaga, Kenji Shida, Mitsuhiro Shigeishi
Organizer
GREEN CONSTRUCTION AND ENGINEERING EDUCATION FOR SUSTAINABLE FUTURE
Related Report
Int'l Joint Research
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