HIGH-STRENGTH, WATERTIGHT PIPE LINING

摘要

In a method of reinforcing a pipe, a water penetration resistant layer and strengthening layer of fibrous material are impregnated with a curable polymer, positioned in a lining position near the pipe, and cured to form a water penetration resistant liner and a strengthening liner. The two layers can be impregnated and positioned separately or at once, for example, as a composite liner. Together, the liners provide a waterproof barrier and structural reinforcement to the resulting pipe. In a method of waterproofing a reinforced pipe, a water penetration resistant layer is impregnated with curable polymer, positioned over a previously installed reinforcing liner, and cured to form a waterproof barrier inhibiting ground water egress into the pipe. In certain embodiments of the methods, the water penetration resistant layer includes fibers woven in one of a satin weave and a twill weave.

主权项

1. A method of reinforcing a pipe having a pipe wall comprising:
impregnating a water penetration resistant layer of fiber laden fabric comprising fibers woven in a weave that is resistant to water penetration, and a strengthening layer of fiber laden material comprising strengthening fibers; positioning the water penetration resistant layer and the strengthening layer in relation to the pipe to substantially cover one of an inner surface and an outer surface of at least a portion of the pipe wall; curing the curable polymer in the water penetration resistant layer and the strengthening layer while the water penetration resistant layer and strengthening layer are positioned in relation to the pipe substantially covering one of the inner and outer surfaces of said portion of the pipe wall to form a strengthening liner of fiber reinforced polymer and a water penetration resistant liner adjacent said portion of the pipe wall, wherein the strengthening liner and the water penetration resistant liner are configured in combination to enhance the strength of said portion of the pipe wall and to provide a water tight barrier along said portion of the pipe wall.