Reinforcement wire having spiral profile

Abstract

The invention can be used in producing prestressed reinforcement for reinforcing items made of concrete and provides maximally strong adhesion to concrete in any potentially possible direction of displacement, and a high level of specific strength, relaxation resistance and fatigue resistance. In a reinforcement wire having a spiral profile, three ruled surfaces, separated from one another by the areas of the cylindrical surface, are applied on the surface of the wire along a spiral line. Trapezoidal projections are disposed on the ruled surfaces at an incline in a direction reversed to the direction of the spiral line along which the ruled surfaces themselves are arranged.

1 . A reinforcement wire having spiral profile, having a triangular section with rounded angles, the ribs and the faces of the wire, which are formed by the rounded angles and the sides of the triangle, respectively, being disposed helically, and a periodic profile in the form of inclined trapezoidal projections with rounded transition areas being formed on the surface of the faces along the line of their positioning. 
     
     
         2 . The reinforcement wire according to  claim 1 , wherein the section is in the shape of a quadrangle with rounded angles. 
     
     
         3 . The reinforcement wire according to  claim 1 , wherein the section is in the shape of an oval. 
     
     
         4 . The reinforcement wire according to  claim 1 , wherein the faces are convex. 
     
     
         5 . The reinforcement wire according to  claim 1 , wherein the faces are concave.