Reinforcing element for concrete construction

Abstract

A reinforcing element for concrete construction in the form of a set bolt which is formed of a rod-shaped section with a cross-sectional enlargement on the end is provided. Significantly, at least this cross-sectional enlargement is formed of glass-fibre reinforced plastic and has an axial bore in its centre, and that the bore and the area of the rod-shaped section surrounded by it engage with one another in a form-locking manner.

1 . A reinforcing element for concrete construction comprising a set bolt including a rod-shaped section ( 1 ) with a cross-sectional enlargement ( 2 ) on an end thereof, at least the cross-sectional enlargement ( 2 ) on the end is formed of glass-fibre reinforced plastic and has an axial bore ( 3 ) in a center thereof and the bore ( 3 ) and an area of the rod-shaped section ( 1 ) surrounded by the bore engage with one another in a form-locking manner.  
   
   
       2 . The reinforcing element according to  claim 1 , wherein 
 the form-locking engagement is formed by a profiling ( 4 ,  5 ) effective primarily against axial forces.    
   
   
       3 . The reinforcing element according to  claim 1 , wherein 
 the form-locking engagement is formed by threads ( 4 ,  5 ).    
   
   
       4 . The reinforcing element according to  claim 1 , wherein 
 the cross-sectional enlargement ( 2 ) has a tubular extension ( 2   a ) extending along the axial bore ( 3 ).    
   
   
       5 . The reinforcing element according to  claim 4 , wherein 
 the tubular extension ( 2   a ) has an axial length which corresponds to at least three times a diameter of the bore ( 3 ).    
   
   
       6 . The reinforcing element according to  claim 4 , wherein 
 the tubular extension ( 2   a ) is profiled on an outer side thereof.    
   
   
       7 . The reinforcing element according to  claim 4 , wherein 
 the tubular extension ( 2   a ) has a wall thickness that increases in a direction toward the cross-sectional enlargement ( 2 ).    
   
   
       8 . The reinforcing element according to  claim 4 , wherein 
 the tubular extension ( 2   a ) passes into the cross-sectional enlargement ( 2 ) at an angle of less than 90°.    
   
   
       9 . The reinforcing element according to  claim 1 , wherein 
 the cross-sectional enlargement ( 2 ) is sprayed or injection-moulded onto the rod-shaped section ( 1 ).    
   
   
       10 . The reinforcing element according to  claim 1 , wherein 
 the rod-shaped section ( 1 ) consists of glass-fibre reinforced plastic.    
   
   
       11 . The reinforcing element according to  claim 1 , further comprising 
 an insulating body ( 10 ) for insertion between a building ceiling ( 12 ) and a balcony platform ( 11 ).    
   
   
       12 . The reinforcing element according to  claim 1 , 
 the outer end of the cross-sectional enlargement ( 2 ) is formed by a plane ( 14   a ) which is oblique to an axial direction.    
   
   
       13 . A method for producing a reinforcing element for concrete construction in the form of a set bolt which is formed with a rod-shaped section ( 1 ) with a cross-sectional enlargement ( 2 ) on an end thereof, comprising 
 producing the rod-shaped section ( 1 ) with a profiling ( 4 ), and    attaching the cross-sectional enlargement ( 2 ) on the end by engaging an outer profile ( 4 ) of the rod-shaped section ( 1 ) in a form-locking manner with an inside profile ( 5 ) of the cross-sectional enlargement.    
   
   
       14 . The method according to  claim 13 , wherein 
 the cross-sectional enlargement ( 2 ) is applied by spraying or injection moulding.    
   
   
       15 . The method according to  claim 13 , wherein 
 the cross-sectional enlargement ( 2 ) is firmly connected with the rod-shaped section ( 1 ).    
   
   
       16 . The method of  claim 14 , wherein a tubular extension ( 2   a ) is simultaneously applied by spraying or injection moulding.  
   
   
       17 . The reinforcing element according to  claim 5 , wherein 
 the tubular extension ( 2   a ) has an axial length which corresponds to at least four times the diameter of the bore ( 3 ).    
   
   
       18 . The reinforcing element according to  claim 4 , wherein 
 the tubular extension ( 2   a ) passes into the cross-sectional enlargement ( 2 ) at an angle of less than 60°.