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Pipeline Rehabilitation Methods

Dewcon is a leading provider of all types of trenchless pipe rehabilitation methods, but we specialize in the most common and widely used rehabilitation technology – cement mortar lining. This is the most common technology because, in most areas, cast iron water mains are as structurally sound as when they were installed. In fact, cement works so well as a corrosion and tuberculation build up barrier, it is still used on new ductile iron pipe being manufactured.

For situations where cement mortar lining is not appropriate, we also have significant experience with slip lining.

Although not as well proven in the water industry as the techniques described above, Dewcon can assist with other types of trenchless pipeline rehabilitation technology as well. One of the methods described below might be the most appropriate fit for your project. Let us help you decide which is the correct method to use.

  • Epoxy liners – The Epoxy lining process involves cleaning the pipe to remove existing corrosion and tuberculation buildup and then spraying a thin coating on the inner pipe wall using a computer controlled spinning head.
  • Polymeric spray-in-place pipe lining materials – The lining is applied similar to epoxy liners, but this lining gains its physical properties within minutes, rather than hours of being applied.
  • Cured-in-place pipe liners – This process involves cleaning the pipe, then plugging existing services to prevent resin migration during line installation. Next, the liner is pulled or inverted in place at lengths of up to 1,000 feet, pressurized with water or air and cured with either hot water or steam.

Trenchless Pipe Rehabilitation Information Request

To learn more about any of the pipeline rehabilitation methods described above, contact Dewcon at 908-832-5710 or use our contact form.