EXPERIMENTAL STUDY ON USING DIFFERENTIATED SHIRASU BY GRAVITY CONCENTRATION AND CLASSIFICATION AS CONCRETE MATERIAL

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  • TOMOYOSE Atsushi
    UNIVERSITY OF TOKYO, Graduate School of Engineering（7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan）
  • NOGUCHI Takafumi
    UNIVERSITY OF TOKYO, Graduate School of Engineering（7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan）
  • SODEYAMA Kenichi
    KAGOSHIMA PREFECTURAL INSTITUTE OF INDUSTRIAL TECHNOLOGY（1445-1, Oda, Hayato-cho, Kirishima-shi, Kagoshima 899-5105, Japan）
  • HIGASHI Kazuro
    PRINCIPLE CO., LTD.（1-17-8, Kamoike, Kagoshima-shi, Kagoshima 890-0063, Japan）

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Other Title
  • 比重選別・分級したシラスの活用に関するコンクリート分野における実験的研究

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<p>Shirasu is kind of sand including fine powder and amorphous silica, both property of fine aggregate and mineral admixture. To utilize Shirasu as industrial resource, gravity concentration is effective. Shirasu is differentiated to crystal mineral easily, and also sieve classified is valid to separate amorphous silica. This paper report fundamental experiment about differentiated crystal used as fine aggregate, and about sieve classified powder used as mineral admixture. Especially, sieve classified Shirasu powder crushed to 1μm have high performance as mineral admixture.</p>

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