LEAKAGE PREVENTION TUBE, ITS COATING METHOD, AND PRESTRESSING STEEL BAR ANCHORING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a leakage prevention tube for coating a joint so as to prevent the leakage of a rust-proof agent from a gap made in the joint between a braking nut and a polyethylene sheath due to a difference between air temperatures, a coating method for the leakage prevention tube, and a prestressing steel bar anchoring structure. SOLUTION: This prestressing steel bar anchoring structure comprises: a prestressing steel bar 10; a sheath 15 for coating the prestressing steel bar 10; the rust-proof agent 151 which is infilled between the prestressing steel bar 10 and the sheath 15; a fastening nut 11 which is screwed to the prestressing steel bar 10; an anchor plate 16 which abuts on the fastening nut 11 and which has a through-hole for inserting the prestressing steel bar 10; the braking nut 14 which is screwed to the prestressing steel bar 10; and the leakage prevention tube 17 for coating the joint between the sheath 15 and the braking nut 14. COPYRIGHT: (C)2009,JPO&INPIT