Reinforcing cable having increased degree of bonding

Abstract

The invention can be used in the production of prestressed reinforcement. The problem of interest consists in developing a reinforcing cable having an increased degree of bonding, said cable having guaranteed structural stability and providing an increased degree of bonding with concrete, durability, and stress relaxation resistance. In a reinforcing cable, a central wire (1) is disposed along the axis of the cable, and is configured with spiral grooves (2) having a pitch that is equal to the pitch of the lay of the cable. Strand wires of an inner layer are disposed within the grooves, each of said wires being in contact with the central wire and with two adjacent wires of the inner layer. Strand wires are helically arranged at equal intervals from one another in an outer layer, each of said wires being disposed in a groove between the strand wires of the inner layer, and being in contact with the latter.

1 . A reinforcing cable having an increased degree of bonding, consisting of a central wire and strand wires helically arranged around it in two concentric layers, wherein spiral grooves are provided on the central wire in the direction of the cable lay with a pitch equal to the pitch of the cable lay, and the strand wires of the inner layer are disposed in these grooves and each of them contacts the central wire and two adjacent strand wires of the inner layer, and the strand wires are helically arranged at equal intervals from one another in the outer layer, each of said wires being in contact with two, adjacent strand wires of the inner layer, between which it is disposed in the groove. 
     
     
         2 . The reinforcing cable of  claim 1 , wherein it has six strand wires of the inner layer, each of which is disposed in a groove on the surface of the central wire, and three strand wires of the outer layer. 
     
     
         3 . The reinforcing cable of  claim 1 , wherein the spiral grooves on the central wire are provided at equal intervals from one another. 
     
     
         4 . The reinforcing cable of  claim 1 , wherein the spiral grooves on the central wire are provided at alternating larger and smaller intervals from one another. 
     
     
         5 . The reinforcing cable of  claim 1 , wherein the strand wires of the outer layer have a smaller section compared to the strand wires of the inner layer. 
     
     
         6 . The reinforcing cable of  claim 1 , wherein a spiral faces that are continuous along the length are provided in the facing areas of the surface of the adjacent strand wires, and the spiral hares are also provided in the outwardly facing areas of the surface of the strand and wires of the inner layer. 
     
     
         7 . The reinforcing cable of  claim 6 , wherein the spiral faces are also provided in the outwardly facing areas of the surface of the strand wires of the outer layer. 
     
     
         8 . The reinforcing cable of  claim 1 , wherein there is periodic profile on the surface of at least one strand wire. 
     
     
         9 . The reinforcing cable of  claim 8 , wherein the periodic profile is in the form of inclined protrusions above the surface of the spiral faces in the outwardly facing areas of the surface of the strand wires. 
     
     
         10 . The reinforcing cable of  claim 1 , wherein the wires have an anti-corrosion coating. 
     
     
         11 . The reinforcing cable of  claim 1 , wherein the main component of the anti-corrosion coating is zinc.