Method of post-tensioned prestressed pipe pressure slurry pipeline requirement

Prestressed tensioning prestressed pipe after pipe pressure slurry pressure tensioning prestressed pipe after pulp slurry pipeline demands after tensioning prestressed pipe pressure slurry pipeline in the bond post-tensioned prestressed concrete structures or components, the appropriate prestressed reinforcement of tunnel by casting rigid or semi-rigid pipes in concrete, or steel pipe core-pulling, hose core-pulling and metal pipe core pulling method such as reserved. Set in concrete rigid or semi-rigid pipeline should not have slurry leakage phenomenon, and should have sufficient strength and rigidity, should be able to in the concrete under the action of gravity to keep the original shape, and can transfer bond stress as required. The performance requirements for pipes shall meet the following requirements: 1 rigid pipes should be smooth steel tube wall thickness not less than 2 mm, and should have smooth inner wall and can be bent into the shape of the appropriate and not appear curly or flattened; Semi-rigid pipe should be corrugated metal pipe or high density polyethylene plastic pipe, and the metal corrugated pipe should be made of galvanized steel strip thickness should not be less than zero. 3 was the quality and performance of metal corrugated pipe should be consistent with the current industry standard for the prestressed concrete with metal corrugated pipe ( JG225) The provisions of the; Plastic corrugated pipe production materials, the quality and performance shall comply with the current industry standard for the prestressed concrete bridge with plastic corrugated pipe ( JT/T529) The provisions of the.