A STUDY ON THE BASIC PROPERTIES OF MECHANICALLY-COMPACTING FLOWABLE CONCRETE WITH HIGH-VOLUME GROUND GRANULATED BLAST-FURNACE SLAG

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  • TAKAHASHI Hayato
    TOKYO UNIVERSITY OF SCIENCE, Faculty of Science and Technology, Department of Civil Engineering（2641, Yamazaki, Noda-shi, Chiba 278-8510, Japan）
  • SUZUKI Masamitsu
    TOKYU CONSTRUCTION Co. Ltd., Institute of Technology（3062-1, Tana, Chuo-ku, Sagamihara-shi, Kanagawa 252-0244, Japan
  • KATO Yoshitaka
    TOKYO UNIVERSITY OF SCIENCE, Faculty of Science and Technology, Department of Civil Engineering（2641, Yamazaki, Noda-shi, Chiba 278-8510, Japan）
  • HAYAKAWA Kenji
    TOKYU CONSTRUCTION Co. Ltd., Institute of Technology（3062-1, Tana, Chuo-ku, Sagamihara-shi, Kanagawa 252-0244, Japan

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Other Title
  • GGBSを大量に使用した締固めを必要とする高流動コンクリートの基礎性状

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<p>Mechanically-compacting flowable concrete with high-volume mineral admixtures can achieve not only the improving efficiency of construction and reducing risks of defects but the reduction of CO2 emission and usage of natural resources. In order to develop mechanically-compacting flowable concrete with high-volume mineral admixtures, this research was carried out to investigate the basic fresh properties and hardened properties of mechanically-compacting flowable concrete with high-volume mineral admixtures using ground granulated blast-furnace slag with the replacement to ordinary Portland cement ratio of 70 and 80％. Compared with the properties of concrete using ordinary Portland cement, mechanically-compacting flowable concrete with high-volume mineral admixtures also follows the binder-water ratio theory. In addition, the effect of mix design factors such as unit water content and sand-total aggregate ratio on fresh properties for mechanically-compacting flowable concrete with high-volume mineral admixtures is also similar to ordinary Portland cement concrete. Compared between the same nominal strength, unit water content of mechanically-compacting flowable concrete with high-volume mineral admixtures can reduce more 5kg/m3 than that of ordinary Portland cement concrete. Hardened properties of mechanically-compacting flowable concrete with high-volume mineral admixtures is equal to or more than that of ordinary Portland cement concrete except the resistance against carbonation.</p>

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