Manhole liner including felt impregnated vinyl
作者： Ronald A. Mcneil
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摘要: A liner assembly (L) for structurally reinforcing a manhole or passage (M) comprises multiple-ply (10, 12, 14), generally cylindrical tube. The outermost ply (10) includes inner and outer surfaces is adapted being impregnated with material rigidifying bonding the surface of to (M). innermost (14) ply. An impermeable (12) disposed between an membrane (12a) having fibers on its surfaces. (12c) bond epoxy (14). Likewise, (12b) (10).
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