Reinforcement containing carbon fibers

Abstract

A textile reinforcement for integrating into concrete, having carbon fibers. The reinforcement is coated with a layer which protects against oxidation, wherein the carbon fibers are provided in the form of an interlaced, twisted, or cabled thread structure and have 5 wt. % of matrix resin, and the layer which protects against oxidation is a separate layer and can produce a chemical bond to a component of the concrete. The invention additionally relates to a concrete part which has a textile reinforcement.

1 . A textile reinforcement for embedding in concrete, having carbon fibers, wherein the reinforcement is coated with a layer protecting against oxidation, wherein
 the carbon fibers are present as an interlaced, intertwined, twisted or cabled thread-like structure and have a maximum of 5 wt. % of a matrix resin,   the layer protecting against oxidation forms a separate layer and can produce a chemical bond to a component of concrete.   
     
     
         2 . The textile reinforcement according to  claim 1 , wherein
 the textile reinforcement has at least one further thread-like structure.   
     
     
         3 . The textile reinforcement according to  claim 2 , wherein the further thread-like structure can contain carbon fibers, aramide fibers, polyamide fibers, AR glass fibers, polypropylene fibers, polyvinyl alcohol fibers, oxidized, infusible polyacrylonitrile fibers, polyester fibers and/or a mixture of the fiber types mentioned. 
     
     
         4 . The textile reinforcement according to  claim 1 , wherein the thread-like structure has a structured surface. 
     
     
         5 . The textile reinforcement according to  claim 1 , wherein the layer protecting against oxidation consists of at least 80 wt. % of inorganic material. 
     
     
         6 . The textile reinforcement according to  claim 1 , wherein the layer protecting against oxidation contains at least 5 wt. % of silicon. 
     
     
         7 . The textile reinforcement according to  claim 6 , wherein the layer protecting against oxidation contains silanol groups on its surface. 
     
     
         8 . The textile reinforcement according to  claim 6 , wherein the layer protecting against oxidation consists of at least 30% of silicon dioxide. 
     
     
         9 . The textile reinforcement according to  claim 1 , wherein the layer protecting against oxidation contains a phyllosilicate. 
     
     
         10 . Textile reinforcement according to  claim 9 , wherein the phyllosilicate is vermiculite. 
     
     
         11 . The textile reinforcement according to  claim 1 , wherein there is an adhesive layer between the carbon fibers and the layer protecting against oxidation. 
     
     
         12 . The textile reinforcement according to  claim 11 , wherein the adhesive layer contains organically functionalized silanes. 
     
     
         13 . The textile reinforcement according to  claim 1 , wherein the textile reinforcement has a protective layer. 
     
     
         14 . A concrete construction part, having a textile reinforcement according to  claim 1 . 
     
     
         15 . The concrete construction part according to  claim 14 , wherein the textile reinforcement has at most one concrete cover of 50 mm and has a fire resistance class of at least R 60.