PROBLEM TO BE SOLVED: To provide a treatment method of extra-fill concrete capable of certainly carrying out reduction of extra-fill concrete quantity and removal of extra-fill concrete without causing floating of a foaming body to specify a slime mixed part at the time of placing concrete of a cast-in-place pile. ;SOLUTION: A foaming body 11 formed by using foaming synthetic resin is installed on an upper end part of a main reinforcement 2a of a reinforcement cage 2, the foaming body 11 is removed after placed concrete 3 is solidified, and an extra-fill part remaining at this foaming body 11 removed part is removed. In this case, a floating preventive jig 14 of the foaming body 11 is installed on the reinforcement cage 2 on the upper end part of the main reinforcement 2a of which the foaming body 11 is installed, floating of the foaming body 11 is prevented at the time of placing concrete, and a concrete crushing member is installed on a lower part of the foaming body 11. Consequently, it is possible to precisely specify a slime mixed part which is the extra-fill part within a range of vertical length of a group of the foaming body 11, to certainly crush a border of a pile head and the extra-fill part and to easily carry out reduction of extra-fill concrete quantity of a cast-in-place pile and removal of the extra-fill part.;COPYRIGHT: (C)2000,JPO
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