US2011129299A1PendingUtilityA1

Concrete repair of tubbings

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Assignee: AGRU KUNSTSTOFFTECHNIK GES M B HPriority: May 19, 2008Filed: Nov 18, 2010Published: Jun 2, 2011
Est. expiryMay 19, 2028(~1.8 yrs left)· nominal 20-yr term from priority
Inventors:Walter Neumueller
B32B 7/022B32B 27/12B32B 27/32B32B 2307/546B32B 2307/54B32B 2419/00B32B 2307/51B32B 2307/726B32B 2262/0276B32B 2262/106B32B 27/304B32B 5/024B32B 7/12B32B 2607/02B32B 2581/00B32B 2262/101B32B 2262/0253
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Claims

Abstract

A lining ( 2 ) for an inside surface of a tunnel, preferably the inside surface of tubbings, wherein it is provided in accordance with the invention that it comprises at least two layers of different tensile strength and extensibility.

Claims

exact text as granted — not AI-modified
1 . An inside shell of a tunnel, comprising a lining ( 2 ) for an inside surface of a tunnel, preferably the inside surface of tubbings, with the lining ( 2 ) comprising at least two layers of different tensile strength and extensibility, wherein the lining ( 2 ) comprises two layers with a first layer ( 2   a ) consisting of an elastic plastic material with higher extensibility than the second layer ( 2   b ), and the second layer ( 2   b ) consists of a tear-proof fabric, and the first layer ( 2   a ) is connected to the second layer ( 2   b ) at least in sections. 
     
     
         2 . An inside shell of a tunnel comprising a lining ( 2 ) according to  claim 1 , wherein the second layer concerns a polyester, polyethylene, carbon or glass-fiber grid fabric. 
     
     
         3 . An inside shell of a tunnel comprising a lining ( 2 ) according to  claim 1 , wherein the first layer ( 2   a ) is laminated or glued onto the second layer ( 2   b ).

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