METHOD FOR PREVENTING CORROSION OF PIPE BURIED IN GROUND, AND CYLINDRICAL ELECTRODE DEVICE FOR ELECTROLYTIC PROTECTION AND ELECTROCONDUCTIVE FILLER TO BE USED IN THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for preventing the corrosion of a pipe buried in the ground at a portion at which the pipe penetrates the reinforced concrete structure, which has superior construction efficiency and economic efficiency and shows a sufficient corrosion protection effect, and to provide a cylindrical electrode device for electrolytic protection and an electroconductive filler which are used in the same.;SOLUTION: The method for preventing the corrosion of the pipe buried in the ground comprises the steps of: (1) forming a cut hole in the vicinity of a part in which the pipe buried in the ground penetrates the reinforced concrete wall in a horizontal or oblique direction from the inside of the reinforced concrete structure to the concrete wall and the soil, by using a cylindrical core bit of a core drill; (2) sliding the cylindrical electrode device for electrolytic protection having several bearings on the outer circumferential face into the inside of the cylindrical core bit in the cut hole and a casing tube that is connected to the core bit, and installing it at the predetermined position in the cut hole; (3) pulling out the cylindrical core bit and the casing tube from the cut hole; and (4) injecting the electroconductive filler into a space inside the cut hole.;COPYRIGHT: (C)2008,JPO&INPIT