By restoration makes harden the hardenability slime of the concrete and the like

摘要

PROBLEM TO BE SOLVED: To provide an economical underground continuous wall. ;SOLUTION: The underground continuous wall 10 has an intermediate wall part 12 and upper and lower wall parts 14, 16. The intermediate wall part 12 is a high strength wall made of reinforced concrete and provided midway in a depth direction so as to correspond to a portion used as a body including the vicinity of an excavation bottom part. The upper and lower wall parts 14, 16 are connectedly formed in the vertical direction of the intermediate wall part 12 by adding water (or an excavation stabilizing liquid) and a cement-based solidifying material to excavated surplus soil produced in ground excavation work and placing and solidifying high strength fluidized soil kneaded in an exclusive plant. The lower wall part 16 is lower in strength than the upper wall part 14 and provided deeper than the excavation bottom as a portion for temporary use. The upper wall part 14 is lower in strength than the intermediate wall part 12 and formed as a portion for temporary use corresponding to a low stress portion positioned at the upper part of the continuous wall 10.;COPYRIGHT: (C)2003,JPO