Pipe Rehabilitation

Published: July 22, 2017 | Last updated: July 5, 2023

What Does Pipe Rehabilitation Mean?

Pipe rehabilitation is that aspect of trenchless rehabilitation that undertakes the repair or replacement of sewer and water pipelines that run under a city or town, connecting homes, offices and industries to the municipal sewer network or water connection. Trenchless technology enables repair and replacement with little to no digging required. Pipe rehabilitation can usually be carried out from manholes. There are different methods for trenchless rehabilitation of pipes which are cost effective, quick, reliable, and long lasting. Trenchless methods are becoming popular because they are non disruptive and eco-friendly.

Trenchlesspedia Explains Pipe Rehabilitation

Pipe rehabilitation methods include sliplining, cured-in-place pipe (CIPP), thermoformed pipe, mechanical spot repair and pipe bursting. The favored method of pipe rehabilitation is CIPP which involves the use of a resin soaked liner that is inverted and inserted into the affected pipeline after the pipeline is cleaned and inspected. Once placed within the pipe, the liner is expanded, using compressed air or steam, and allowed to fill the pipe. Heat is applied to the liner to accelerate the curing process. Another commonly used trenchless method is pipe bursting in which a pipe, with a slightly smaller diameter than the host pipe, is inserted behind a bursting head. The bursting head has a slightly larger diameter than the host pipe and, as it rotates through the host pipe, it bursts the pipe and pushes the broken pieces into the surrounding soil while pulling the new pipe behind it and replacing the damaged pipe. Mechanical spot repairs are used for strengthening small areas of damaged pipes that do not need to be replaced.

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