Recycling of road surfacings

Abstract

The present invention relates to a process for the production of roads, tracks, and other areas used by traffic, by producing a mixture comprising ground road surfacing, mineral material, and/or glass, a polymer reaction mixture and, if desired, further additions, and applying it to a substrate material, and hardening it. The present invention further relates to roads, tracks, and other areas used by traffic, obtainable by a process of this type.

1 . A process for producing a road, a track, or a different area bearing traffic, the process comprising:
 producing a first mixture comprising
 ground road surfacing, 
 at least one selected from the group consisting of a mineral material and glass, 
 a polymer reaction mixture, and 
 optionally, at least one further addition; 
   (ii) applying the first mixture to a substrate material; and   (iii) hardening the first mixture.   
     
     
         2 . The process of  claim 1 , wherein the polymer reaction mixture is a mixture for producing a polyurethane. 
     
     
         3 . The process of  claim 2 , wherein the polymer reaction mixture comprises a compound which improves adhesion. 
     
     
         4 . The process of  claim 1 , wherein the polymer reaction mixture is obtained via mixing
 a) at least one isocyanate with   b) at least one compound having at least two hydrogen atoms reactive toward isocyanate,   c) at least one selected from the group consisting of a chain extender and a crosslinking agent,   d) optionally, at least one catalyst, and   e) optionally, at least one further additive.   
     
     
         5 . The process of  claim 1 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         6 . The process of  claim 1 , wherein a proportion of ground road surfacing is smaller than 95% by weight, based on a total weight of a mixture composed of ground road surfacing and mineral material in the first mixture. 
     
     
         7 . A top layer or load-bearing layer obtained by the process of  claim 1 ,
 wherein the top layer or load-bearing layer is suitable for a road, a track, or a different area bearing traffic.   
     
     
         8 . The process of  claim 2 , wherein the polymer reaction mixture is obtained via mixing
 a) at least one isocyanate with   b) at least one compound having at least two hydrogen atoms reactive toward isocyanate,   c) at least one selected from the group consisting of a chain extender and a crosslinking agent,   d) optionally, at least one catalyst, and   e) optionally, at least one further additive.   
     
     
         9 . The process of  claim 3 , wherein the polymer reaction mixture is obtained via mixing
 a) at least one isocyanate with   b) at least one compound having at least two hydrogen atoms reactive toward isocyanate,   c) at least one selected from the group consisting of a chain extender and a crosslinking agent,   d) optionally, at least one catalyst, and   e) optionally, at least one further additive.   
     
     
         10 . The process of  claim 2 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         11 . The process of  claim 3 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         12 . The process of  claim 4 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         13 . The process of  claim 8 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         14 . The process of  claim 9 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         15 . The process of  claim 1 , wherein the polymer reaction mixture is a mixture for producing an epoxy resin. 
     
     
         16 . The process of  claim 15 , wherein the polymer reaction mixture comprises a compound which improves adhesion. 
     
     
         17 . The process of  claim 15 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         18 . The process of  claim 16 , wherein a proportion of the polymer reaction mixture is from 1 to 20% by weight, based on a total weight of the first mixture. 
     
     
         19 . The process of  claim 15 , wherein a proportion of ground road surfacing is smaller than 95% by weight, based on a total weight of the mixture composed of ground road surfacing and mineral material. 
     
     
         20 . A top layer or load-bearing layer obtained by the process of  claim 15 , wherein the top layer or load-bearing layer is suitable for a road, a track, or a different area bearing traffic.