Reinforced structure comprising a cementitious matrix and zinc coated metal elements

Abstract

The invention relates to a reinforced structure comprising a cementitious matrix and zinc coated metal elements. The structure comprises at least at the interface of the zinc coated metal elements and the cementitious matrix a compound selected from the group consisting of the imidazoles, the triazoles and the tetrazoles. The invention further relates to a zinc coated metal element for the reinforcement of a cementitious matrix and to a method to inhibit hydrogen gas evolution at the interface of zinc coated metal elements embedded in a cementitious matrix.

1 - 20 . (canceled) 
     
     
         21 . A zinc coated metal element for the reinforcement of a cementitious matrix, said zinc coated metal element being coated with a layer comprising a compound selected from the group consisting of the imidazoles, the triazoles and the tetrazoles. 
     
     
         22 . A zinc coated metal element according to  claim 21 , whereby said layer comprises a glue comprising said compound. 
     
     
         23 . A zinc coated metal element according to  claim 21 , whereby said imidazole comprises benzimidazole. 
     
     
         24 . A zinc coated metal element according to  claim 21 , whereby said metal element comprises a metal wire, metal cord, metal fiber, metal bar, metal sheet or metal mesh. 
     
     
         25 . A zinc coated metal element according to  claim 21 , whereby said metal element comprises a steel fiber. 
     
     
         26 . A zinc coated metal element according to  claim 21 , whereby said metal element have a zinc alloy coating. 
     
     
         27 . A method to inhibit hydrogen gas evolution at the interface of zinc coated metal elements embedded in a cementitious matrix, said method comprising the steps of providing zinc coated metal elements; introducing said zinc coated metal elements in a cementitious matrix and treating said zinc coated metal elements and/or said cementitious matrix with a compound selected from the group consisting of the imidazoles, the triazoles and the tetrazoles. 
     
     
         28 . A method according to  claim 27 , whereby said imidazole comprises benzimidazole. 
     
     
         29 . A method according to  claim 27 , whereby said treatment comprises the addition of said compound to said cementitious matrix. 
     
     
         30 . A method according to  claim 27 , whereby said treatment comprises the application of a coating layer comprising said compound on said zinc coated metal elements before introducing said zinc coated metal elements in said cementitious matrix. 
     
     
         31 . A method according to  claim 29 , whereby said coating layer comprising a glue.