METHOD AND APPARATUS FOR LINING A PIPE

摘要

The method for rehabilitating a damaged section of a pipe without a need for a resin absorbent liner is provided. The method includes pumping a low viscosity material towards a damaged section of pipe and changing the viscosity prior to dispensing of the material. For example, the material may be partially cured prior to dispensing. The partially cured or higher viscosity material is compressed between an inflating bladder and interior wall of the pipe, and the material that is allowed to fully cure. The bladder either can then be removed from the pipe or could be allowed to maintain in the pipe providing a new interior surface for the repaired pipe.

主权项

1. A method of rehabilitating a damaged section of a pipe that obviates the need for a resin absorbent liner, comprising:
positioning a bladder in a pipe; dispensing a material capable of curing and hardening between an exterior surface of the bladder and the interior surface of the pipe; wherein the material capable of curing and hardening is at least partially cured prior to being dispensed; compressing the at least partially cured material between the bladder and the pipe; and allowing the material to continue to cure.