Liner for concrete article

摘要

The liner includes a rib formation with a transverse section configured to mechanically lock the liner to a concrete shell and a joint to allow the rib formation to flex. The joint for the rib formation can comprise a first side spaced apart from a second side with each joined to the transverse section to allow each side to flex with respect to each other. The space between the first side and the second side can be filled with a weld material to add rigidity to the rib formation while allowing it to flex. Each of the first side and the second side can be combined at the other end to a shell. The combined rib formation and shell are spirally wound to create the liner.

主权项

1. A liner for a concrete pipe comprising:
a rib formation with a transverse section configured to mechanically lock the liner to the concrete pipe; and a joint with a first side and a first latitudinal section combined to the first side, and a second side and a second latitudinal section combined with the second side, wherein the first latitudinal section and the second latitudinal section are axially moveable with respect to each other to allow the first side to move with respect to the second side to allow for expansion and contraction of the liner.