The use of prestressed plastic corrugated pipe in the industrial field
Release time:
2023-04-03
The use of prestressed plastic bellows in the industrial field
The use of prestressed plastic bellows is relatively large, especially in the field of industrial production. Prestressed plastic bellows is a new type of hole-forming material with HDPE as the original material. Important used in post-tensioned prestressed cement structure, the use is very much, this kind of pipe planning novel, reasonable structure, breaking through the "plate" traditional structure of ordinary pipes, so that the pipe has both satisfactory compressive and impact strength, but also has outstanding flexibility. So what are the advantages of prestressed plastic bellows?
The original material of the prestressed plastic bellows is HDPE. Compared to other tubes, there are many advantages. The corrosion resistance of prestressed plastic bellows is far better than that of metal, not afraid of acid and alkali corrosion, it itself is not corrosion, and can effectively protect prestressed ribs from corrosion. Many prestressed structures are subjected to severe external influences, such as de-icing salt or brine. When the post-tensioning member is blocked or fails due to the collapse of the waterproof layer, microcrack leakage and drainage equipment, the prestressed ribs may be corroded. The FIP Construction Guide states that metal pipes do not have permanent corrosion protection and are not sufficient to resist water leakage and reaching the slurry and prestressed ribs. The prestressed plastic bellows can provide a barrier protection effect far superior to the metal bellows for the prestressed ribs, which can prevent the pollution of harmful substances penetrating the pipeline, and then ensure that the resistance of the post-tensioned prestressed structure is very good.
Under the same conditions, the friction coefficient of the reserved aperture of the prestressed plastic bellows is significantly smaller than that of the reserved aperture of the metal bellows, which reduces the friction loss of the prestress during the tensioning process. Generally, the friction coefficient of plastic bellows is 0.14, while the friction coefficient of metal bellows is 0.25; The prestressed plastic bellows has high strength, is not afraid of stepping on pressure, is not easy to be vibrated and chiseled, and its sealing performance is also relatively good. The advantage of prestressed plastic bellows is that it has relatively good corrosion resistance, and it is necessary to improve the anti-corrosion protection of prestressed ribs. Secondly, it has outstanding physical properties, is non-conductive, can prevent stray current corrosion, good sealing performance, and does not rust. Under a certain load, it is not soaked; High strength, high rigidity, good impact resistance, not afraid of stepping on. Frictional loss of prestress during tension can be reduced. Therefore, the quick advantages of prestressed plastic bellows are many.
Previous:
Related News