Road surfacing system

Abstract

The present invention relates to a road surfacing system, in particular an asphalt road, which comprises at least one main layer which is at least partially and at least in places permeable to liquids and gases for absorbing compressive and shear forces generated on the main layer by load bodies, for example vehicles, travelling and/or standing on the main layer, wherein the main layer is arranged on a drainage layer through which liquids and/or gases can flow, and further where-in the drainage layer is again arranged on top of a drainage layer which is arranged and intended to at least partially drain liquids from the road surfacing system passing through the main and drainage layers, characterized in that the main layer is substantially free from aggregates and instead is formed with adhering ball elements formed with a plastic and/or a metal.

Claims

1. An asphalt road surfacing system (100), comprising: at least one main layer (1), at least partially and at least in places permeable to liquids and gases, for absorbing compressive and shear forces generated on the main layer (1) by load bodies moving and/or standing on the main layer (1), wherein the main layer (1) is arranged on a first drainage layer (2) through which liquids and/or gases can flow, and further wherein the first drainage layer (2) is again arranged all around on a second drainage layer (3), wherein the second drainage layer (3) is arranged and provided for at least partially draining liquids from the road surface system (100) through the main and drainage layers (1, 2), and wherein the main layer (1) is substantially free from aggregates, and instead is formed with ball elements (11) adhering to each other, which are formed with a plastic and/or a metal.

2. The road surfacing system (100) according to claim 1, wherein the first drainage layer (2) is at least partially formed with aggregates.

3. The road surfacing system (100) according to claim 2, wherein the ball elements (11) produce a void content in volume % within the main layer (1) of at least 20 to at most 30.

4. The road surfacing system (100) according to claim 2, wherein the ball elements (11) produce a void content in volume % within the main layer (1) of at least 22.0 to at most 28.0.

5. The road surfacing system (100) according to claim 1, wherein the ball elements (11) produce a void content in volume % within the main layer (1) of at least 10 to at most 35.

6. The road surfacing system (100) according to claim 5, wherein the load bodies are vehicles.

7. The road surfacing system according to claim 1, wherein the ball elements (11) are each formed with a hard core (110) and an outer layer (111) which preferably completely surrounds the hard core (110), wherein the outer layer (111) is formed with a material which is softer than the hard core (110) on a Shore D scale.

8. The road surfacing system (100) according to claim 7, wherein the outer layer (111) is softer by at least two points on the Shore D scale than the hard core (110) of each of the ball elements (11).

9. The road surfacing system (100) according to claim 7, wherein the hard core (110) is formed with a metal, and the outer layer (111) is formed with the plastic and/or or an adhesive.

10. The road surfacing system (100) according to claim 9, wherein the ball elements (11) are mechanically bonded to one another by means of their outer layers (111), which are cured after previous heating, and/or by means of a cured bonding agent (112).

11. The road surfacing system (100) according to claim 10, wherein the cured bonding agent (112) is a bonding adhesive.

12. The road surfacing system (100) according to claim 10, wherein the outer layer (111) of the balls (11) and/or the cured bonding agent (112) is formed by means of an organic or inorganic adhesive.

13. Main layer (1) part of an asphalt road, wherein the main layer (1) is at least partially and at least in places permeable to liquids and gases, and the main layer (1) is arranged and provided to withstand pressure and/or shear forces generated thereon by load bodies moving and/or standing on the main layer (1), and wherein the main layer (1) is substantially free from aggregates, and instead is formed with ball elements (11) adhering to each other, which are formed with a plastic and/or a metal.

14. The main layer (1) part of an asphalt road according to claim 13, wherein the load bodies are vehicles.

15. Method for producing an asphalt road surfacing system (100) comprising the steps of: applying a first drainage layer (3) on a road floor (4), applying a second drainage layer (2) on the first drainage layer (3), applying a main layer (1) to the second drainage layer (2), wherein the main layer (1) is at least partially and at least in places permeable to liquids and gases, and the main layer (1) is designed and intended to withstand pressure and/or shear forces generated thereon by load bodies moving and/or standing on the main layer (1), wherein the second drainage layer (2) is adapted to be at least partially permeable to liquids and/or gases, wherein the first drainage layer (3) is arranged and intended to at least partially drain liquids from the road surfacing system (100) through the main and second drainage layers (1, 2), and, wherein the main layer (1) is substantially free from aggregates and is instead formed with ball elements (11) formed with a plastic and/or metal, in particular wherein an outer surface (110A) of the ball elements (11) is applied to the second drainage layer (2) in the still heated state, which can be bonded thereto, so that after application, the individual ball elements (11) cool down to an ambient temperature during cooling and thus bond to each other, so that a hardened road surface, in particular in the form of the main layer (1), results.

16. The method for producing an asphalt road surfacing system (100) according to claim 15, wherein the load bodies are vehicles.

Description

(1) In the following the inventions are described in more detail by means of two figures.

(2) FIG. 1 shows a longitudinal section along a direction of the roadway of the road pavement system 100 described here, whereas FIG. 1 shows a corresponding section in a direction transverse to the direction of the roadway of the road pavement system described in FIG. 1.

(3) In the figures, the same or similarly acting components are provided with the same reference lines, even if individual elements may be represented in exaggerated detail.

(4) FIG. 1 shows a road surfacing system 100, in particular an asphalt road, with a drainage layer 2 on a drainage layer 3 and a main layer 1 on this drainage layer 2.

(5) The main layer 1 is essentially free of aggregates and instead is formed with adherent ball elements 11, which are formed with a plastic and/or a metal.

(6) The drainage layer 2 is designed in such a way that liquids and gases can flow through it, so that drainage in the direction of the drainage layer 3 is ensured.

(7) The drainage layer 3 is designed to allow liquids from the entire road surface system to run off at least partially (as shown in the longitudinal section as an example, V-shaped and on both sides towards the side), but preferably completely, in particular by itself, starting from an outer surface of the drainage layer 3 passing through the main layer 1 in the direction of the drainage layer 3.

(8) This can mean that the existing drainage layer is formed in at least one version with aggregates, preferably completely with aggregates, which fundamentally distinguishes the existing drainage layer in its material, structural formation from main layer 1.

(9) The spherical elements 11 form clearly recognisable cavities between one another in FIG. 1, so that the cavities (white areas) form a cavity content of at least 10 to at most 35% by volume.

(10) The ball elements 11 are each formed with a hard core 110 and an outer layer 111 (In FIG. 1, as in FIG. 2, these are not explicitly shown within a ball for reasons of simplification, but are present. Corresponding reference signs are set in the figures). On a Shore D scale, the outer layer 111 is at least two points softer than the hard core 110 of each of the spherical elements 11.

(11) Alternatively or additionally, instead of the formation of the ball elements 11 in the form of a hard core 110 with surrounding outer layer 111, the ball element 11 itself can be formed with a hard core 110, in which case the outer layer 111 is omitted. In such a case, however, it may be provided that instead of the outer layer 111, the individual hard cores 110 are joined together by means of a bonding adhesive, for example an organic or inorganic adhesive, arranged on the outer surface of the hard cores 110.

(12) The main layer 1 shown in FIG. 1 and FIG. 2 is therefore specifically designed and intended to withstand compressive and shear forces exerted on the main layer 1, preferably to deform accordingly, provided that the main layer 1 is loaded from one direction, but after removal of the load the main layer 1 returns at least partially, preferably completely, to its original shape. In this respect, the main layer 1 is an at least partially elastic material. It can be seen that the drainage layer 3 is arranged on a road floor, whereby the road floor is provided with the reference sign 4.

(13) The invention is not limited by the design example, but comprises any invention and any combination of features, even if these features are not explicitly described in the patent application.