CORROSION-RESISTANT METHOD OF SURROUNDINGS OF PIPE PIERCING CORROSION-RESISTANT SHEET

• Main Authors: YAMANAKA HARUAKI, TATEKAWA KOSEI
• Format: Patent
• Language: English
• Published: 13.07.1999
• Edition: 6
• Subjects: CESSPOOLS; EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SEWERAGE; SEWERS; SHAFTS; TUNNELS; WATER SUPPLY

PROBLEM TO BE SOLVED: To prevent corrosion of the surroundings of a pipe piercing a corrosion- resistant sheet by winding a sheet having the same quality with the corrosion-resistant sheet around the pipe piercing the corrosion-resistant sheet of a concrete body such as a treatment tank for factory waste water and tightening it with a corrosion-resistant belt and then, fusing the sheet wound and the corrosion-resistant sheet. SOLUTION: A high density polyethylene corrosion-resistant sheet 5 is arranged at the concrete surface of a concrete body 1 and a metallic pipe 3 is arranged to pierce the concrete body. A filler such as a silicon sealing material is applied on the peripheral face of the pipe 3. Then, a sheet 6 having the same quality with the corrosion-resistant sheet 5 is wound up thereon. And the filler is also applied between gaps of the overlapped part of the sheet 6 and the periphery of the sheet 6 is tightened with a belt 7 made of stainless steel or the like. The contact side against the corrosion- resistant sheet 5 is fused with the sheet 5 by heat-welding. In this way, water-tightness of the surroundings of the sheet 6 and the pipe 3, the laminated gaps of the sheet 6, and the gaps between the sheet 6 and the corrosion-resistant sheet 5 can be secured and hence, the piping part can be securely prevented from corrosion.