When the pore-forming material is damaged, the slurry is the last protective barrier for the prestressed steel in the prestressed concrete structure. Plastic corrugated pipe is a new type of hole-forming material. Compared with metal corrugated pipe, it has the following advantages
The raw material of prestressed plastic corrugated pipe is. Its corrosion resistance is far better than that of metal. It is not afraid of acid and alkali corrosion. It does not corrode itself and can effectively protect the prestressed tendons from corrosion. Many prestressed structures are exposed to severe external influences, such as de-icing salts or brine. When post-tensioned members leak water due to micro-cracks in the waterproofing layer and blockage or failure of drainage facilities, the prestressed tendons may be subject to corrosion. The Construction Guidelines for Grouting of Prestressed Tendons state that metal pipes have no permanent corrosion resistance and are not sufficient to resist water leakage and reaching the grout as well as the prestressed tendons. Prestressed plastic corrugated pipes can provide a barrier protection function for prestressed tendons that is far superior to metal corrugated pipes, and can prevent harmful substances from penetrating the pipeline and contaminating it, thereby ensuring better durability of the post-tensioned prestressed structure.
Under the same conditions, the friction coefficient of the reserved channels of the prestressed plastic corrugated pipe is significantly smaller than the friction coefficient of the reserved channels of the metal bellows, which reduces the friction loss of the prestressed force during the tensioning process. Generally speaking, the friction coefficient of plastic bellows is taken and the friction coefficient of metal bellows is taken as stress. Plastic bellows has high strength, is not afraid of being stepped on, and is not easily broken by vibrators. Its sealing performance and anti-leakage performance are higher than that of metal corrugated pipes. Pipe, more suitable for vacuum grouting
Three prestressed plastic corrugated pipes are non-conductive and can prevent stray current corrosion, while metal is a good conductor of electricity
Four prestressed plastic corrugated pipes have better fatigue resistance , which can greatly improve the fatigue resistance of components.
Professional and authoritative brand of plastic corrugated pipes on special sale in Wuxi, Jiangsu 15933187015