EXPERIMENTAL STUDY ON TENSILE STRENGTH OF PLASTIC GROUT IN FRESH CONDITION

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  • ABE Tomohiko
    NITTOC CONSTRUCTION CO., LTD., Engineering & Development Division（3-10-6, Higashinihonbashi, Chuo-ku, Tokyo 103-0004, Japan）
  • SOESILO Egy Crystal
    NITTOC CONSTRUCTION CO., LTD., Engineering & Development Division（3-10-6, Higashinihonbashi, Chuo-ku, Tokyo 103-0004, Japan）
  • FUJIWARA Hiromi
    UTSUNOMIYA UNIVERSITY, Department of Civil Engineering and Regional Design（7-1-2, Yoto, Utsunomiya-shi, Tochigi 321-8585, Japan）

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  • 可塑性グラウト材料のフレッシュ状態における引張強さに関する実験的研究

Abstract

<p>In this study, we investigated and experimented with the optimum mix proportion for applying the plastic grout material as a filling material for boulder ground in water. In order to fill the voids in the boulder ground in water with higher quality, when the grout material is extruded downward during filling, the grout material is torn off by its own weight and falls. It was shown that it is desirable to use a mix proportion that suppresses the phenomenon （a mix proportion with high tensile strength in water）. It was confirmed that the tensile strength was increased by replacing some amount of cement with silica fume and mixing bentonite.</p>

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