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| タイトル | : | Evaluation of Concrete Made from Recycled Coarse Aggregates by Pulsed Power Discharge |
| 著者 | : | Narahara, Shouta
Namihira, Takao
Nakashima, Kazuyuki
Inone, Syouta
Iizasa, S.
Maeda, S.
Shigeishi, M.
Ohtsu, M.
Akiyama, Hidenori |
| 刊行年月日 | : | 2007-6 |
| 収録雑誌名 | : | Digest of Technical Papers-IEEE International Pulsed Power Conference |
| 巻 | : | 2007 |
| 開始ページ | : | 748 |
| 終了ページ | : | 751 |
| 要約(Abstract) | : | In Japan, the most of waste concrete scraps have been
reused as roadbed materials and the recycling ratio of
waste concrete scraps has been kept over 95 % from 2000.
However, it is expected that the demands of waste
concrete scraps as roadbed materials would decrease even
though the waste concrete scraps increase with the pulling
down buildings in next decade. These facts mean that the
recycling of waste concrete scraps would be in the
negative situation. Therefore, the development of new
recycling technology of waste concrete scraps is
paramount importance in Japan. In this work, the pulsed
power discharges inside of waste concrete scraps
immersed in water were used to reproduce the coarse
aggregate. In the experiments, the Marx generator, which
storages the energy of 6.4 kJ/Pulse, was used as pulsed
power source and the point to hemisphere mesh electrode
was immersed in water. The pulsed voltages with 400 kV
of peak voltage were applied to the concrete scraps placed
on hemisphere mesh and the reproduced coarse
aggregates were evaluated after the repetitive discharge
treatment. From the experimental results, it is found that
the coarse aggregates reproduced by 40~60 pulsed
discharge treatments have the enough qualities of the
bone-dry density and the water absorption rate to satisfy
JIS (Japan Industrial Standard) regulation (A 5005). In
addition, the concretes consisted of the reproduced coarse
aggregate also have the enough compressed strength and
Young’s module to utilize as the construction material. |
| 収録種別 | : | 会議発表論文 |
| 出版社(者) | : | Institute of Electrical and Electronics Engineers |
| 権利(Rights) | : | (c)2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| 備考 | : | 16th IEEE International Pulsed Power Conference, Albuquerque, New Mexico, June 17-22, 2007 |
| URI | : | http://hdl.handle.net/2298/10318 |
| 出現コレクション | : | 発表論文（工学系）
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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/2298/10318
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