METHOD OF PUMPING UP EXTRA-BANKING CONCRETE OF CAST-IN-PLACE PILE FOR REMOVAL

摘要

PURPOSE:To efficiently remove extra-banking concrete in a short time, by a method wherein a water pouring port is provided in a position in the vicinity of the suction port of a suction hose, and extra-banking concrete is pumped up through the water pouring port as water is poured. CONSTITUTION:A suction hose 3 is guided through a stand pipe 4, and a suction port 3a at the forward end of the hose 3 is inserted into an extra-banking pile 5a of a cast-in-place pile 5. With a vacuum pump driven, the concrete 5a is pumped up through the hose 3, and water is poured in through a feed water hose 8.