| 摘要 |
PROBLEM TO BE SOLVED: To provide a waste soil improving apparatus which saves space, can offer high-speed continuous treatment, dispenses with pretreatment, enhances the stability and safety of improved soil, makes the strength of a solidification material manifest itself with rapidity, and reduces the amount of the solidification material. SOLUTION: The waste soil feeder 2, in which a back crasher 8 serving as a crushing device is arranged in a hopper 9, is provided on an upper part of a vertical cylindrical body 1. A first mixing chamber 86, which is formed in a lower part of the feeder 2 in the cylindrical body 1, is provided with: a shearing-agitating mixing tool 4 in which a rotating shaft 38 is equipped with a plurality of choppers serving as rotary crushing members 39; and an exhaust port 6 of a solidification-material pumping feed pipe 5 which serves as a feed part for a cement-based solidification material. In addition, a discharge part 40 is provided in a lower part of the mixing chamber 86; and the inside of the cylindrical body 1 is provided with a carbonic acid gas charging line 41 serving as a feed means for feeding carbonic acid gas to the mixing chamber 86.
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