Coarse Aggregate Recycling by Pulsed Discharge Inside of Concrete
S. Inoue, J. Araki, T. Aoki, S. Maeda, S. Iizasa, M. Takaki, D. Wang, T. Namihira, M. Shigeishi, M. Ohtsu and H. Akiyama
Bioelectrics Research Center, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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In Japan, the treatment of waste concrete scraps has been one of the environmental issues. Therefore, new application using pulsed power discharge has been developed as the recycling method of the coarse aggregates from the waste concrete scraps. In the work, the dependences of the quality of the recycled coarse aggregate by the repetitive pulsed discharge treatments on the consumption energy were investigated. As the results, it was clear that the quality of the recycled coarse aggregate could be controlled by the number of discharge treatments. The recycled coarse aggregate, which satisfied class H under the regulations of Japan Industrial Standard (JIS A5005 and JIS A5021), was produced with the smallest consumption energy when the discharged energy from 0.02 μF of capacitor charged up to 400 kV applied to the waste concrete scraps during single discharge treatment.
DOI: 10.12693/APhysPolA.115.1107
PACS numbers: 52.80.Wq