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Development of Solidification Technique for Recycle of Concrete Wastes by Hydrothermal Hot-Pressing and Its Mechanical Property
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- NAKANE Yuji
- Research Institute for Fracture Technology, Faculty of Engineering, Tohoku University
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- SATO Kazushi
- Research Institute for Fracture Technology, Faculty of Engineering, Tohoku University
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- TAKAHASHI Hideaki
- Research Institute for Fracture Technology, Faculty of Engineering, Tohoku University
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- YAMASAKI Nakamichi
- Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University
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- HASHIDA Toshiyuki
- Research Institute for Fracture Technology, Faculty of Engineering, Tohoku University
Bibliographic Information
- Other Title
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- 水熱ホットプレス法によるコンクリート廃材の固化体合成技術の開発と評価に関する研究
- スイネツ ホット プレスホウ ニ ヨル コンクリート ハイザイ ノ コカタイ
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Description
A new processing method for solidifying pulverized concrete wastes is presented. The objective of this study was to develop a technology to recycle concrete wastes. Concrete wastes were pulverized and then solidified by a hydrothermal hot-pressing method, which is a press-forming technique under hydrothermal conditions using an autoclave. The reaction temperature was in the range of 120 to 300°C, and the reaction time was in the range of 10 to 40min. The tensile strength of the solidified concrete waste was determined by a Brazilian test. It was shown that concrete waste can be solidified under the above reaction conditions. The measured tensile strength increased with increasing temperature, and a steep increase was observed at the reaction temperatures of 150 to 200°C. The tensile strength of 5MPa was achieved above 200°C. The steep increase in the tensile strength was shown to be due to the formation of tobermorite.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 102 (1184), 405-407, 1994
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680255186560
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- NII Article ID
- 110002290584
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- NII Book ID
- AN10040326
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- ISSN
- 18821022
- 09145400
- http://id.crossref.org/issn/09145400
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- NDL BIB ID
- 3876106
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed