Tubbing having a thermoplastic sealing layer

Abstract

For a tubbing made of concrete for lining a tunnel, such as a traffic tunnel, the tubbing can have a convexly curved outer surface and a concavely curved inner surface opposite the outer surface. The tubbing can be provided with a thermoplastic sealing layer on the outer surface of the concrete tubbing. The thermoplastic sealing layer can also be arranged on all sides of the outside surfaces facing the outer surface. The tubbing can, for example, have a recess that extends around the outer surface in a frame shape, and the sealing layer engages in the recess.

Dependencies are inferred from the claim text.