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.

1 . Tubbing for lining a tunnel, comprising:
 a concrete tubbing having a convexly curved outer surface and a concavely curved inner surface opposite the outer surface; and   a thermoplastic sealing layer provided on the convexly curved outer surface of the concrete tubbing, the thermoplastic sealing layer also being arranged on other outside surfaces of the concrete tubbing adjacent the convexly curved outer surface.   
     
     
         2 . Tubbing according to  claim 1 , comprising:
 a recess that extends around the convexly curved outer surface in a frame shape, the thermoplastic sealing layer engaging in the recess.   
     
     
         3 . Tubbing according to  claim 1 , wherein the thermoplastic sealing layer comprises:
 a water-swellable profile arranged on a side other than the outside surfaces.   
     
     
         4 . Tubbing according to  claim 1 , comprising:
 a sealing groove that extends around the outside surfaces, in which a sealing body is arranged.   
     
     
         5 . Tubbing according to  claim 1 , wherein the thermoplastic sealing layer contains thermoplastic polyolefins and/or polyvinyl chloride (PVC). 
     
     
         6 . Tubbing according to  claim 1 , wherein the thermoplastic sealing layer comprises:
 material selected from the group consisting of: high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyamide (PA), ethylene-vinyl acetate (EVA), chlorosulfonated polyethylene and thermoplastic polyolefins (TPO).   
     
     
         7 . Tubbing according to  claim 1 , comprising:
 a sealing coating between the convexly curved outer surface and the thermoplastic sealing layer, wherein this sealing coating is selected from the group consisting of: methacrylate resin, polyester resin, epoxy resin, polyurethane and polyurea.   
     
     
         8 . Tubbing according to  claim 1 , wherein the sealing coating is also arranged at least partially on the outside surfaces. 
     
     
         9 . Tubbing according to  claim 1 , comprising:
 an adhesive layer between the convexly curved outer surface and the thermoplastic sealing layer.   
     
     
         10 . A tunnel structure containing a tubbing according to  claim 1 . 
     
     
         11 . Tubbing according to  claim 2 , wherein the thermoplastic sealing layer comprises:
 a water-swellable profile arranged on a side other than the outside surfaces.   
     
     
         12 . Tubbing according to  claim 11 , comprising:
 a sealing groove that extends around the outside surfaces, in which a sealing body is arranged.   
     
     
         13 . Tubbing according to  claim 12 , wherein the thermoplastic sealing layer contains thermoplastic polyolefins and/or polyvinyl chloride (PVC). 
     
     
         14 . Tubbing according to  claim 13 , wherein the thermoplastic sealing layer comprises:
 material selected from the group consisting of: high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyamide (PA), ethylene-vinyl acetate (EVA), chlorosulfonated polyethylene and thermoplastic polyolefins (TPO).   
     
     
         15 . Tubbing according to  claim 14 , comprising:
 a sealing coating between the convexly curved outer surface and the thermoplastic sealing layer, wherein this sealing coating is selected from the group consisting of: methacrylate resin, polyester resin, epoxy resin, polyurethane and polyurea.   
     
     
         16 . Tubbing according to  claim 15 , wherein the sealing coating is also arranged at least partially on the outside surfaces. 
     
     
         17 . Tubbing according to  claim 16 , comprising:
 an adhesive layer between the convexly curved outer surface and the thermoplastic sealing layer.   
     
     
         18 . A tunnel structure containing a tubbing according to  claim 17 .