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EP1693517A2 - Reinforcement layer system - Google Patents

Reinforcement layer system Download PDF

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Publication number
EP1693517A2
EP1693517A2 EP06003207A EP06003207A EP1693517A2 EP 1693517 A2 EP1693517 A2 EP 1693517A2 EP 06003207 A EP06003207 A EP 06003207A EP 06003207 A EP06003207 A EP 06003207A EP 1693517 A2 EP1693517 A2 EP 1693517A2
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EP
European Patent Office
Prior art keywords
reinforcing layer
layer system
surface element
reinforcing
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06003207A
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German (de)
French (fr)
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EP1693517B1 (en
EP1693517A3 (en
Inventor
Warnfried Baumann
Martin Schön
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Rehau Automotive SE and Co KG
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Rehau AG and Co
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Application filed by Rehau AG and Co filed Critical Rehau AG and Co
Priority to PL06003207T priority Critical patent/PL1693517T3/en
Publication of EP1693517A2 publication Critical patent/EP1693517A2/en
Publication of EP1693517A3 publication Critical patent/EP1693517A3/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/16—Reinforcements
    • E01C11/165—Reinforcements particularly for bituminous or rubber- or plastic-bound pavings

Definitions

  • the invention relates to a reinforcing layer system for planar protection, introduced between a substrate and an asphalt layer, with a reinforcing layer, which has a reinforcement matrix with a plurality of intermediate free spaces, for receiving stresses occurring in the substrate and / or the asphalt layer, and with at least one directly adjacent to the reinforcing layer surface element.
  • a reinforcing layer system of the aforementioned type is known from EP 0413295 A1.
  • a surface element a component of a two-component composite.
  • the surface element prevents the penetration of water as well as organic and inorganic components.
  • reinforcing layer systems can be found in EP 1158098 B1, DE 19812475 A1, EP 0956392 B1 and DE 19543991 A1.
  • the reinforcing layer system according to EP 0413295 A1 has the disadvantage that the surface element complicates a toothing of the material of the substrate on the one hand with the material of the asphalt layer on the other hand at the level of the reinforcing layer system. A lateral displacement of the asphalt layer relative to the base in the plane of the reinforcing layer system can therefore not be ruled out and the transmission of power between the layers is disturbed.
  • Improved gearing can be achieved by a reinforcement that allows mass transfer between the layers adjacent to the reinforcing layer system through the plane of the reinforcement, e.g. B. by gaps or openings, allows.
  • corresponding reinforcing layer systems have the disadvantage that it is not possible to drive the armor layer systems in the production of the asphalt layer with vehicles, without this undesirable material is forced through the reinforcing layer system from bottom to top.
  • Such undesirable pushed through material can, for. B. adhere to the tires of the vehicles and in the worst case lead to the armor layer system is at least partially deducted from the surface and taken unwanted from the vehicle.
  • This object is achieved by a reinforcing layer system in which the surface element is designed such that it temporarily stops after placing on the pad a held by the reinforcing layer system mass transfer and due to a required for the production of the asphalt layer heating of this decomposed releasing at least a portion of the free spaces.
  • the reinforcing matrix may alternatively be designed as a grid or as a random array.
  • the reinforcing layer may be made of organic and / or inorganic fibers such as glass fibers, basalt fibers, carbon fibers or polymeric fibers. However, it is also within the scope of the invention that the reinforcing layer is made of mixtures of these different types of fibers.
  • a bituminous coating of the reinforcing layer and / or of the surface element improves the adhesion of the reinforcing layer system to the adjacent layers in a preferred embodiment.
  • the surface element can be designed as a film layer.
  • a film material is PE, in particular LDPE.
  • the film layer may be uniaxially or biaxially stretched to increase its stiffness.
  • the surface element may alternatively be formed as a fiber layer.
  • the fibrous layer may be in the form of ribbons, slivers, textured fibers and the like or as a non-woven.
  • a water-vapor-permeable surface element of a preferred embodiment prevents unwanted water vapor bubbles from forming under the reinforcing layer system due to the heating during the application of the asphalt layer when the reinforcing layer system is applied to the substrate.
  • the water vapor permeability can be made possible in particular by a perforation of the surface element. Such a perforation, which may already be due to production, means that the function of preventing a mass transfer by the reinforcing layer system with respect to the passability by construction vehicles remains ensured. However, it is also within the scope of the invention that the perforation is subsequently introduced into the surface element.
  • the surface element may have a basis weight in the range of 10 and 90 g / m 2 . Such a basis weight has been found to be sufficient to achieve the barrier effect. In addition, such a surface element decomposes relatively quickly, since only a small volume has to be warmed up.
  • a reinforcing layer system 1 shown in perspective in FIG. 1 serves to secure an asphalt surface between a base and an asphalt layer, in particular to prevent or reduce the formation of cracks in the asphalt surface.
  • a reinforcing layer system 1 for securing an asphalt sealing layer for example, can be used in landfill or dyke construction.
  • the reinforcing layer system 1 on a grid which is made in the embodiment of FIGS. 1 to 3 of glass fibers 3.
  • the reinforcing layer 2 can also be made as a reinforcing grid of basalt, carbon or polymeric fibers. Due to its network structure, the reinforcing layer 2 represents a reinforcing matrix with a multiplicity of rectangular free spaces 4.
  • the mesh width of the mesh is in particular greater than 10 mm and preferably in the region of 30 mm.
  • the reinforcing layer 2 takes in the secured by the reinforcing layer system 1 asphalt pavement tensions, z. B. by environmental influences or by load application, and carries this over a larger area again.
  • the reinforcing layer 2 directly adjoins a surface element 5.
  • the surface element 5 is designed as a polyethylene (PE) film layer with a basis weight of about 25 g / m 2 . Also, a higher basis weight to, for example, 90 g / m 2 is possible.
  • the surface element 5 is connected to the reinforcing layer 2, in this embodiment, this is glued.
  • the PE film layer may be uniaxially or biaxially stretched to increase rigidity.
  • both the reinforcing layer 2, ie in the case of the embodiment according to FIGS. 1 to 3, the individual glass fibers 3 and also the surface element 5 can be protected against water absorption and e.g. be provided with a bitumen affine coating. This may be a bitumen emulsion to which additives have been added.
  • the surface element 5 is designed to be permeable to water vapor. This is ensured by a corresponding perforation, which is not shown in the drawing, which, for example, production-related already exists, but can also be introduced later.
  • the surface element 5 can also be placed so that it comes to rest over the reinforcing layer 2.
  • the surface element 5 of the reinforcement layer system 1 applied to the substrate temporarily inhibits a mass transfer taking place through the reinforcement layer system 1.
  • the reinforcing layer system 1 adheres to the substrate by means of a Anspritzstoffs which has been applied before placing the reinforcing layer system 1 on the substrate.
  • the injection-molding agent for example, a bitumen emulsion can not initially penetrate the applied reinforcing layer system 1, since the surface element 5 prevents this.
  • the reinforcing layer system 1 can therefore z. B. road vehicles are easily run over without the Anspritzstoffsch undesirably comes into contact with the vehicle tires.
  • the reinforcing layer system 1 is heated to temperatures in the range between 130 and 160 ° C. These temperatures are above the melting point of the surface element 5, which therefore melts. Breakthroughs 6 therefore occur in the area of the free spaces 4 (see FIG. 3). As a result, the free spaces 4 are released, so that after application of the asphalt layer, a mass transfer through the reinforcing layer system 1 is possible therethrough.
  • the asphalt layer on the one hand and the substrate on the other hand can therefore intermesh well with the reinforcing layer 2 of the reinforcing layer system 1. This effectively prevents a lateral displacement of the asphalt layer relative to the substrate in the plane predetermined by the reinforcing layer system 1.
  • the water vapor permeability of the surface element 5 causes water components of the Anspritzschs before the application of the asphalt layer can volatilize through the reinforcing layer system 1.
  • the formation of disturbing water vapor bubbles under the reinforcing layer system 1 during application of the asphalt layer is thereby effectively prevented.
  • the surface element 5 may alternatively be formed as a fiber layer of fiber structures, which either have only very small or no gaps to each other, so that a mass transfer by the reinforcing layer system 1 is initially prevented by such a fiber layer.
  • fiber structures are called ribbon, sliver, and textured fibers. These fibers can also be made of PE or LDPE.
  • Another embodiment of the fiber structures are nonwovens having a basis weight of about 10 g / m to about 90 g / m of polyolefins such as polyethylene and / or polypropylene.
  • Such a fiber layer may also be bonded to the reinforcing layer 2.
  • a connection of the two layers 2, 5 in the case of a fiber layer as a surface element 5 by knitting, weaving, welding, needling or sewing is possible.
  • a surface element 5 may alternatively serve a bitumen layer.
  • a surface element made of a material which decomposes in another way under the action of heat, for. B. dissolves or releases the free spaces 4 at least partially as a result of a chemical reaction.
  • two surface element layers are provided which cover the reinforcing layer 2 on both sides. Upon heating of such a two-ply surface element, for example of two webs during the application of the asphalt layer, this also releases the free spaces 4 through a melting or dissolution process.
  • FIG. 4 to 6 show a further embodiment of a reinforcing layer system 1, this also serves to secure a road surface between an asphalt layer on a substrate, in particular for preventing or reducing cracking in the asphalt layer.
  • a reinforcing layer system 1 can be used for securing an asphalt sealing layer, for example in landfill or dyke construction or in airport construction.
  • the reinforcing layer system according to FIGS. 4 to 6 will be described in more detail only where its structure and its manufacture and installation differ from what has been explained above in connection with FIGS. 1 to 3.
  • the reinforcing layer system according to FIGS Fig. 4 to 6 has a reinforcing layer 7, which is designed as a tangle.
  • Single fibers 8 of the reinforcing layer 7 are glass fibers.
  • also basalt, carbon and / or polymeric fibers may be used.
  • the surface density of the reinforcing layer 7 is chosen so that macroscopic free spaces 9 remain between the individual fibers 8. These free spaces 9 are released during the application of the asphalt layer on the applied reinforcement layer system 1 according to FIGS. 4 to 6 due to the heat-related melting or dissolution of the surface element 5. Here are formed in the surface element 5 openings 10, as shown in Fig. 6.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Laminated Bodies (AREA)

Abstract

The system has an armoring layer (2) including an armoring array with a set of free spaces (4) for receiving voltages. A surface unit (5) is formed in such a manner that the surface unit prevents a material exchange that takes place by the system after applying on a bedding layer. The surface unit is decomposed due to a heating of the system required for producing an asphalt layer under clearance of a part of the free spaces.

Description

Die Erfindung betrifft ein Armierungs-Schichtsystem zur flächenhaften Sicherung, eingebracht zwischen einer Unterlage und einer Asphaltschicht, mit einer Armierungsschicht, die eine Armierungsmatrix mit einer Vielzahl von zwischenliegenden Freiräumen aufweist, zur Aufnahme von in der Unterlage und/oder der Asphaltschicht auftretenden Spannungen, und mit mindestens einem direkt an die Armierungsschicht angrenzenden Flächenelement.The invention relates to a reinforcing layer system for planar protection, introduced between a substrate and an asphalt layer, with a reinforcing layer, which has a reinforcement matrix with a plurality of intermediate free spaces, for receiving stresses occurring in the substrate and / or the asphalt layer, and with at least one directly adjacent to the reinforcing layer surface element.

Ein Armierungs-Schichtsystem der eingangs genannten Art ist bekannt aus der EP 0413295 A1. Dort ist als Flächenelement eine Komponente eines zweikomponentigen Verbundstoffs angegeben. Durch das Flächenelement wird das Durchdringen von Wasser sowie von organischen und anorganischen Bestandteilen verhindert.A reinforcing layer system of the aforementioned type is known from EP 0413295 A1. There is given as a surface element, a component of a two-component composite. The surface element prevents the penetration of water as well as organic and inorganic components.

Andere Beispiele für Armierungs-Schichtsysteme finden sich in der EP 1158098 B1, der DE 19812475 A1, der EP 0956392 B1 und der DE 19543991 A1.Other examples of reinforcing layer systems can be found in EP 1158098 B1, DE 19812475 A1, EP 0956392 B1 and DE 19543991 A1.

Das Armierungs-Schichtsystem nach der EP 0413295 A1 hat den Nachteil, dass das Flächenelement eine Verzahnung des Materials der Unterlage einerseits mit dem Material der Asphaltschicht andererseits auf Höhe des Armierungs-Schichtsystems erschwert. Ein laterales Versetzen der Asphaltschicht relativ zur Unterlage in der Ebene des Armierungs-Schichtsystems ist daher nicht auszuschließen und die Kraftübertragung zwischen den Schichten ist gestört.The reinforcing layer system according to EP 0413295 A1 has the disadvantage that the surface element complicates a toothing of the material of the substrate on the one hand with the material of the asphalt layer on the other hand at the level of the reinforcing layer system. A lateral displacement of the asphalt layer relative to the base in the plane of the reinforcing layer system can therefore not be ruled out and the transmission of power between the layers is disturbed.

Eine verbesserte Verzahnung kann durch eine Armierung erzielt werden, die einen Stoffaustausch zwischen den Schichten, die dem Armierungs-Schichtsystem benachbart sind, durch die Ebene der Armierung, z. B. durch Zwischenräume bzw. Durchbrechungen, ermöglicht. Entsprechende Armierungs-Schichtsysteme haben aber den Nachteil, dass es nicht möglich ist, die Armierungs-Schichtsysteme bei der Herstellung der Asphaltschicht mit Fahrzeugen zu befahren, ohne dass hierbei unerwünscht Material durch das Armierungs-Schichtsystem von unten nach oben hindurchgedrückt wird.Improved gearing can be achieved by a reinforcement that allows mass transfer between the layers adjacent to the reinforcing layer system through the plane of the reinforcement, e.g. B. by gaps or openings, allows. However, corresponding reinforcing layer systems have the disadvantage that it is not possible to drive the armor layer systems in the production of the asphalt layer with vehicles, without this undesirable material is forced through the reinforcing layer system from bottom to top.

Derart unerwünscht durchgedrücktes Material kann z. B. an den Reifen der Fahrzeuge anhaften und im ungünstigsten Fall dazu führen, dass das Armierungs-Schichtsystem zumindestens teilweise von der Unterlage abgezogen und unerwünscht vom Fahrzeug mitgenommen wird.Such undesirable pushed through material can, for. B. adhere to the tires of the vehicles and in the worst case lead to the armor layer system is at least partially deducted from the surface and taken unwanted from the vehicle.

Es ist eine Aufgabe der vorliegenden Erfindung, ein Armierungs-Schichtsystem der eingangs genannten Art so weiterzubilden, dass es eine gute Verzahnung der benachbarten Schichten in der Ebene des Armierungs-Schichtsystems ermöglicht, wobei gleichzeitig die Vorteile eines absperrenden Flächenelementes während der Herstellung der Asphaltschicht erhalten bleiben sollen.It is an object of the present invention to develop a reinforcing layer system of the type mentioned above so that it allows a good toothing of the adjacent layers in the plane of the reinforcing layer system, while maintaining the benefits of a blocking surface element during the production of the asphalt layer should.

Diese Aufgabe ist erfindungsgemäß gelöst durch ein Armierungs-Schichtsystem, bei dem das Flächenelement derart ausgestaltet ist, dass es nach dem Auflegen auf die Unterlage einen durch das Armierungs-Schichtsystem stattfindenden Stoffaustausch vorübergehend unterbindet und sich aufgrund einer für die Herstellung der Asphaltschicht erforderlichen Erwärmung von diesem unter Freigabe zumindestens eines Teils der Freiräume zersetzt.This object is achieved by a reinforcing layer system in which the surface element is designed such that it temporarily stops after placing on the pad a held by the reinforcing layer system mass transfer and due to a required for the production of the asphalt layer heating of this decomposed releasing at least a portion of the free spaces.

Erfindungsgemäß wurde erkannt, dass sich eine Sperrwirkung beim Herstellen der Asphaltschicht einerseits und die Gewährleistung eines Stoffaustausches nach Verlegung des Armierungs-Schichtsystems andererseits nicht zwingend ausschließen. Diese beiden, eigentlich widerstreitenden Funktionen werden durch das erfindungsgemäße Armierungs-Schichtsystem mit dem Flächenelement miteinander in Einklang gebracht. Dieses sperrt den Stoffaustausch genau so lange, wie dies erforderlich ist, nämlich während des Aufbringens der Asphaltschicht. Die Erwärmung für die Herstellung der Asphaltschicht sorgt dann dafür, dass sich das Flächenelement so zersetzt, dass anschließend ein Stoffaustausch zur Erzielung der erwünschten Verzahnungswirkung möglich ist.
Als Unterlage für das erfindungsgemäße Armierungs-Schichtsystem finden an sich bekannte Asphalttragschichten, Binderschichten, Betonschichten sowie hydraulisch gebundene Tragschichten Anwendung.
Das Armierungs-Schichtsystem kann universell immer dort angewendet werden, wo eine flächenhafte Sicherung zwischen einer Unterlage und einer Asphaltschicht erforderlich ist. Derartige Anwendungen sind allgemeine Verkehrsflächen, der Fahrbahnbau, der Deponiebau, der Deichbau, der Flughafenbau oder die Herstellung von Flachdächern.According to the invention, it has been recognized that a blocking effect during the production of the asphalt layer, on the one hand, and the guarantee of a mass transfer after the laying of the reinforcing layer system, on the other hand, are not necessarily mutually exclusive. These two, actually conflicting functions are brought into harmony with the surface element by the reinforcing layer system according to the invention. This blocks the mass transfer just as long as necessary, namely during the application of the asphalt layer. The heating for the production of the asphalt layer then ensures that the surface element decomposes so that subsequently a mass transfer to achieve the desired Verzahnungswirkung is possible.
As support for the reinforcing layer system according to the invention, known asphalt base courses, binder courses, concrete layers and hydraulically bound base courses are used.
The reinforcing layer system can universally be applied wherever a surface securing between a base and an asphalt layer is required. Such applications are general traffic areas, road construction, landfill construction, dike construction, airport construction or the production of flat roofs.

Die Armierungsmatrix kann alternativ als Gitternetz oder als Wirrgelege ausgeführt sein.The reinforcing matrix may alternatively be designed as a grid or as a random array.

Die Armierungsschicht kann aus organischen und/oder anorganischen Fasern wie bspw. aus Glasfasern, aus Basaltfasern, aus Carbonfasern oder aus polymeren Fasern gefertigt sein. Es liegt jedoch auch im Rahmen der Erfindung, dass die Armierungsschicht aus Mischungen dieser unterschiedlichen Faserarten gefertigt ist.The reinforcing layer may be made of organic and / or inorganic fibers such as glass fibers, basalt fibers, carbon fibers or polymeric fibers. However, it is also within the scope of the invention that the reinforcing layer is made of mixtures of these different types of fibers.

Eine bitumenaffine Beschichtung der Armierungsschicht und/oder des Flächenelementes verbessert bei einer bevorzugten Ausgestaltung die Haftung des Armierungs-Schichtsystems an den benachbarten Schichten.A bituminous coating of the reinforcing layer and / or of the surface element improves the adhesion of the reinforcing layer system to the adjacent layers in a preferred embodiment.

Das Flächenelement kann als Folienschicht ausgeführt sein. Ein Beispiel für ein Folienmaterial ist PE, insbesondere LDPE. Die Folienschicht kann zur Vergrößerung ihrer Steifigkeit uni- oder biaxial gereckt sein.The surface element can be designed as a film layer. An example of a film material is PE, in particular LDPE. The film layer may be uniaxially or biaxially stretched to increase its stiffness.

Das Flächenelement kann alternativ auch als Faserschicht ausgebildet sein. Die Faserschicht kann in Form von Bändchen, Lunte, texturierten Fasern und dergleichen oder als Vlies ausgebildet sein.The surface element may alternatively be formed as a fiber layer. The fibrous layer may be in the form of ribbons, slivers, textured fibers and the like or as a non-woven.

Ein wasserdampfdurchlässiges Flächenelement einer bevorzugten Ausgestaltung verhindert, dass sich bei auf der Unterlage aufgelegtem Armierungs-Schichtsystem aufgrund der Erwärmung bei der Aufbringung der Asphaltschicht unerwünschte Wasserdampfblasen unter dem Armierungs-Schichtsystem bilden. Die Wasserdampfdurchlässigkeit kann insbesondere durch eine Perforation des Flächenelementes ermöglicht werden. Eine derartige Perforation, welche bereits herstellungsbedingt vorliegen kann, führt dazu, dass die Funktion des Unterbindens eines Stoffaustausches durch das Armierungs-Schichtsystem im Blick auf die Überfahrbarkeit durch Baufahrzeuge weiterhin gewährleistet bleibt. Es liegt jedoch auch im Rahmen der Erfindung, dass die Perforation nachträglich in das Flächenelement eingebracht wird.A water-vapor-permeable surface element of a preferred embodiment prevents unwanted water vapor bubbles from forming under the reinforcing layer system due to the heating during the application of the asphalt layer when the reinforcing layer system is applied to the substrate. The water vapor permeability can be made possible in particular by a perforation of the surface element. Such a perforation, which may already be due to production, means that the function of preventing a mass transfer by the reinforcing layer system with respect to the passability by construction vehicles remains ensured. However, it is also within the scope of the invention that the perforation is subsequently introduced into the surface element.

Das Flächenelement kann ein Flächengewicht im Bereich von 10 und 90 g/m2 aufweisen. Ein derartiges Flächengewicht hat sich als zum Erreichen der Sperrwirkung ausreichend herausgestellt. Zudem zersetzt sich ein derartiges Flächenelement relativ schnell, da nur ein geringes Volumen aufgewärmt werden muss.The surface element may have a basis weight in the range of 10 and 90 g / m 2 . Such a basis weight has been found to be sufficient to achieve the barrier effect. In addition, such a surface element decomposes relatively quickly, since only a small volume has to be warmed up.

Ausführungsbeispiele der Erfindung, die diese jedoch nicht einschränken, werden nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:

Fig. 1
perspektivisch ein Armierungs-Schichtsystem, bei dem Teile einer oberen Armierungsschicht zur Sichtbarmachung des Schichtaufbaus weggelassen sind;
Fig. 2
einen Schnitt durch das Armierungs-Schichtsystem nach Fig. 1, bevor dieses bei der Herstellung eines Asphaltbelages erwärmt wurde;
Fig. 3
einen zu Fig. 2 ähnlichen Schnitt durch das Armierungs-Schichtsystem nach der Erwärmung von diesem bei der Herstellung des Asphaltbelages;
Fig. 4
eine zu Fig. 1 ähnliche Darstellung einer weiteren Ausführung eines Armierungs-Schichtsystems mit einem Faser-Wirrgelege als Armierungsschicht;
Fig. 5
einen zu Fig. 2 ähnlichen Schnitt durch das Armierungs-Schichtsystem nach Fig. 4 vor einer Erwärmung von diesem bei der Herstellung eines Asphaltbelags; und
Fig. 6
einen zu Fig. 5 ähnlichen Schnitt durch das Armierungs-Schichtsystem nach Fig. 4 nach der Erwärmung von diesem bei der Herstellung des Asphaltbelags.
Embodiments of the invention, which do not limit these, however, are explained in more detail with reference to the drawing. In this show:
Fig. 1
in perspective, a reinforcing layer system in which parts of an upper reinforcing layer for the visualization of the layer structure are omitted;
Fig. 2
a section through the reinforcing layer system of Figure 1, before it was heated in the manufacture of an asphalt covering.
Fig. 3
a similar to Figure 2 section through the reinforcing layer system after the heating of this in the production of the asphalt pavement.
Fig. 4
a view similar to Figure 1 of another embodiment of a reinforcing layer system with a fiber entanglement as a reinforcing layer.
Fig. 5
a similar to Figure 2 section through the reinforcing layer system of Figure 4 before heating of this in the production of an asphalt surface. and
Fig. 6
a similar to Fig. 5 section through the reinforcing layer system of Fig. 4 after the heating of this in the production of the asphalt pavement.

Ein in Fig. 1 perspektivisch dargestelltes Armierungs-Schichtsystem 1 dient zur Sicherung eines Asphaltbelages zwischen einer Unterlage und einer Asphaltschicht, insbesondere zur Verhinderung bzw. Verminderung einer Rissbildung im Asphaltbelag. Es liegt jedoch auch im Rahmen der Erfindung, dass ein derartiges Armierungs-Schichtsystem 1 zur Sicherung einer Asphaltdichtungsschicht bspw. im Deponie- bzw. Deichbau eingesetzt werden kann. Als Armierungsschicht 2 weist das Armierungs-Schichtsystem 1 ein Gitternetz auf, welches bei der Ausführung nach den Fig. 1 bis 3 aus Glasfasern 3 gefertigt ist. Alternativ kann die Armierungsschicht 2 auch als Armierungsgitter aus Basalt-, Carbon- oder polymeren Fasern gefertigt sein. Aufgrund ihrer Netzstruktur stellt die Armierungsschicht 2 eine Armierungsmatrix mit einer Vielzahl von rechteckigen Freiräumen 4 dar. Die Maschenweite des Gitternetzes ist insbesondere größer als 10 mm und vorzugsweise im Bereich um 30 mm.A reinforcing layer system 1 shown in perspective in FIG. 1 serves to secure an asphalt surface between a base and an asphalt layer, in particular to prevent or reduce the formation of cracks in the asphalt surface. However, it is also within the scope of the invention that such a reinforcing layer system 1 for securing an asphalt sealing layer, for example, can be used in landfill or dyke construction. As a reinforcing layer 2, the reinforcing layer system 1 on a grid, which is made in the embodiment of FIGS. 1 to 3 of glass fibers 3. Alternatively, the reinforcing layer 2 can also be made as a reinforcing grid of basalt, carbon or polymeric fibers. Due to its network structure, the reinforcing layer 2 represents a reinforcing matrix with a multiplicity of rectangular free spaces 4. The mesh width of the mesh is in particular greater than 10 mm and preferably in the region of 30 mm.

Die Armierungsschicht 2 nimmt im durch das Armierungs-Schichtsystem 1 gesicherten Asphaltbelag auftretende Spannungen, z. B. durch Umwelteinflüsse oder durch Lastaufbringung, auf und trägt diese über eine größere Fläche wieder ab.The reinforcing layer 2 takes in the secured by the reinforcing layer system 1 asphalt pavement tensions, z. B. by environmental influences or by load application, and carries this over a larger area again.

Die Armierungsschicht 2 grenzt direkt an ein Flächenelement 5 an. Bei der Ausführung nach den Fig. 1 bis 3 ist das Flächenelement 5 als Polyethylen-(PE-)Folienschicht mit einem Flächengewicht von etwa 25 g/m2 ausgeführt. Auch ein höheres Flächengewicht bis beispielsweise 90 g/m2 ist möglich. Das Flächenelement 5 ist mit der Armierungsschicht 2 verbunden, in diesem Ausführungsbeispiel ist diese verklebt. Die PE-Folienschicht kann zur Erhöhung der Steifigkeit uni- oder biaxial gereckt sein.The reinforcing layer 2 directly adjoins a surface element 5. In the embodiment according to FIGS. 1 to 3, the surface element 5 is designed as a polyethylene (PE) film layer with a basis weight of about 25 g / m 2 . Also, a higher basis weight to, for example, 90 g / m 2 is possible. The surface element 5 is connected to the reinforcing layer 2, in this embodiment, this is glued. The PE film layer may be uniaxially or biaxially stretched to increase rigidity.

Sowohl die Armierungsschicht 2, also im Falle der Ausführung nach den Fig. 1 bis 3 die einzelnen Glasfasern 3 als auch das Flächenelement 5 können gegen Wasseraufnahme geschützt und z.B. mit einer bitumenaffinen Beschichtung versehen sein. Dabei kann es sich um eine Bitumen-Emulsion handeln, der Additive zugesetzt sind.Both the reinforcing layer 2, ie in the case of the embodiment according to FIGS. 1 to 3, the individual glass fibers 3 and also the surface element 5 can be protected against water absorption and e.g. be provided with a bitumen affine coating. This may be a bitumen emulsion to which additives have been added.

Das Flächenelement 5 ist wasserdampfdurchlässig ausgeführt. Dies wird durch eine entsprechende Perforation gewährleistet, die in der Zeichnung nicht dargestellt ist, die bspw. herstellungsbedingt bereits vorliegt, aber auch nachträglich eingebracht sein kann.The surface element 5 is designed to be permeable to water vapor. This is ensured by a corresponding perforation, which is not shown in the drawing, which, for example, production-related already exists, but can also be introduced later.

Beim Auflegen des Armierungs-Schichtsystems 1 auf die Unterlage kann das Flächenelement 5, wie in den Fig. 1 bis 3 angedeutet, unten liegend angeordnet sein. Das Flächenelement 5 kann alternativ auch so aufgelegt werden, dass es über der Armierungsschicht 2 zu liegen kommt. Das Flächenelement 5 des auf die Unterlage aufgelegten Armierungs-Schichtsystems 1 unterbindet einen durch das Armierungs-Schichtsystem 1 stattfindenden Stoffaustausch vorübergehend. Das Armierungs-Schichtsystem 1 haftet auf der Unterlage mit Hilfe eines Anspritzmittels, das vor dem Auflegen des Armierungs-Schichtsystems 1 auf die Unterlage aufgebracht wurde. Das Anspritzmittel bspw. eine Bitumenemulsion kann das aufgelegte Armierungs-Schichtsystem 1 zunächst nicht durchdringen, da das Flächenelement 5 dies verhindert. Das Armierungs-Schichtsystem 1 kann daher z. B. von Straßenbaufahrzeugen problemlos überfahren werden, ohne dass das Anspritzmittel unerwünscht mit den Fahrzeugreifen in Kontakt kommt.When placing the reinforcing layer system 1 on the base, the surface element 5, as indicated in FIGS. 1 to 3, be arranged at the bottom. Alternatively, the surface element 5 can also be placed so that it comes to rest over the reinforcing layer 2. The surface element 5 of the reinforcement layer system 1 applied to the substrate temporarily inhibits a mass transfer taking place through the reinforcement layer system 1. The reinforcing layer system 1 adheres to the substrate by means of a Anspritzmittels which has been applied before placing the reinforcing layer system 1 on the substrate. The injection-molding agent, for example, a bitumen emulsion can not initially penetrate the applied reinforcing layer system 1, since the surface element 5 prevents this. The reinforcing layer system 1 can therefore z. B. road vehicles are easily run over without the Anspritzmittel undesirably comes into contact with the vehicle tires.

Bei der Herstellung der Asphaltschicht wird das Armierungs-Schichtsystem 1 auf Temperaturen im Bereich zwischen 130 und 160°C erwärmt. Diese Temperaturen liegen oberhalb des Schmelzpunktes des Flächenelementes 5, das daher aufschmilzt. Im Bereich der Freiräume 4 entstehen daher Durchbrüche 6 (vgl. Fig. 3). Hierdurch werden die Freiräume 4 freigegeben, so dass nach Aufbringung der Asphaltschicht ein Stoffaustausch durch das Armierungs-Schichtsystem 1 hindurch möglich ist. Die Asphaltschicht einerseits und die Unterlage andererseits können sich daher gut mit der Armierungsschicht 2 des Armierungs-Schichtsystems 1 verzahnen. Dadurch wird effektiv eine laterale Versetzung der Asphaltschicht relativ zur Unterlage in der vom Armierungs-Schichtsystem 1 vorgegebenen Ebene verhindert.In the production of the asphalt layer, the reinforcing layer system 1 is heated to temperatures in the range between 130 and 160 ° C. These temperatures are above the melting point of the surface element 5, which therefore melts. Breakthroughs 6 therefore occur in the area of the free spaces 4 (see FIG. 3). As a result, the free spaces 4 are released, so that after application of the asphalt layer, a mass transfer through the reinforcing layer system 1 is possible therethrough. The asphalt layer on the one hand and the substrate on the other hand can therefore intermesh well with the reinforcing layer 2 of the reinforcing layer system 1. This effectively prevents a lateral displacement of the asphalt layer relative to the substrate in the plane predetermined by the reinforcing layer system 1.

Die Wasserdampfdurchlässigkeit des Flächenelementes 5 führt dazu, dass Wasseranteile des Anspritzmittels vor dem Aufbringen der Asphaltschicht sich durch das Armierungs-Schichtsystem 1 verflüchtigen können. Die Ausbildung störender Wasserdampfblasen unter dem Armierungs-Schichtsystem 1 beim Aufbringen der Asphaltschicht ist hierdurch wirksam verhindert.The water vapor permeability of the surface element 5 causes water components of the Anspritzmittels before the application of the asphalt layer can volatilize through the reinforcing layer system 1. The formation of disturbing water vapor bubbles under the reinforcing layer system 1 during application of the asphalt layer is thereby effectively prevented.

Das Flächenelement 5 kann alternativ auch als Faserschicht aus Faserstrukturen gebildet sein, die entweder nur sehr kleine oder keine Zwischenräume zueinander aufweisen, so dass auch durch eine derartige Faserschicht ein Stoffaustausch durch das Armierungs-Schichtsystem 1 zunächst unterbunden ist. Als Beispiele derartiger Faserstrukturen seien Bändchen, Lunte, sowie texturierte Fasern genannt. Diese Fasern können ebenfalls aus PE bzw. aus LDPE gefertigt sein. Ein weiteres Ausführungsbeispiel der Faserstrukturen sind Vliese mit einem Flächengewicht von ca. 10 g/m bis ca. 90 g/m aus Polyolefinen wie Polyethylen und/oder Polypropylen.The surface element 5 may alternatively be formed as a fiber layer of fiber structures, which either have only very small or no gaps to each other, so that a mass transfer by the reinforcing layer system 1 is initially prevented by such a fiber layer. As examples of such fiber structures are called ribbon, sliver, and textured fibers. These fibers can also be made of PE or LDPE. Another embodiment of the fiber structures are nonwovens having a basis weight of about 10 g / m to about 90 g / m of polyolefins such as polyethylene and / or polypropylene.

Eine derartige Faserschicht kann ebenfalls mit der Armierungsschicht 2 verklebt sein. Alternativ ist eine Verbindung der beiden Schichten 2, 5 im Falle einer Faserschicht als Flächenelement 5 durch Wirken, Weben, Schweißen, Nadeln oder Nähen möglich.Such a fiber layer may also be bonded to the reinforcing layer 2. Alternatively, a connection of the two layers 2, 5 in the case of a fiber layer as a surface element 5 by knitting, weaving, welding, needling or sewing is possible.

Als Flächenelement 5 kann alternativ auch eine Bitumenschicht dienen.As a surface element 5 may alternatively serve a bitumen layer.

Alternativ zu einem durch Wärmeeinwirkung beim Verlegen der Asphaltschicht aufschmelzenden Flächenelement, kann auch ein Flächenelement aus einem Material vorgesehen sein, welches sich in anderer Weise unter Wärmeeinwirkung zersetzt, z. B. auflöst oder in Folge einer chemischen Reaktion die Freiräume 4 zumindest teilweise freigibt.As an alternative to a surface element which is melted by the action of heat during the laying of the asphalt layer, it is also possible to provide a surface element made of a material be, which decomposes in another way under the action of heat, for. B. dissolves or releases the free spaces 4 at least partially as a result of a chemical reaction.

Bei einer Variante eines Armierungs-Schichtsystems sind zwei Flächenelement-Lagen vorgesehen, die die Armierungsschicht 2 auf beiden Seiten abdecken. Bei einer Erwärmung eines derartigen zweilagigen Flächenelementes bspw. von zwei Vliesen bei der Aufbringung der Asphaltschicht gibt dieses durch einen Aufschmelz- bzw. Auflösungsprozess ebenfalls die Freiräume 4 frei.In a variant of a reinforcing layer system, two surface element layers are provided which cover the reinforcing layer 2 on both sides. Upon heating of such a two-ply surface element, for example of two webs during the application of the asphalt layer, this also releases the free spaces 4 through a melting or dissolution process.

Die Fig. 4 bis 6 zeigen eine weitere Ausführung eines Armierungs-Schichtsystems 1, dieses dient ebenfalls zur Sicherung eines Fahrbahnbelages zwischen einer Asphaltschicht auf einer Unterlage, insbesondere zur Verhinderung bzw. Verminderung einer Rissbildung in der Asphaltschicht.
Es liegt jedoch auch im Rahmen der Erfindung, dass ein derartiges Armierungs-Schichtsystem 1 zur Sicherung einer Asphaltdichtungsschicht bspw. im Deponie- bzw. Deichbau oder im Flughafenbau eingesetzt werden kann.4 to 6 show a further embodiment of a reinforcing layer system 1, this also serves to secure a road surface between an asphalt layer on a substrate, in particular for preventing or reducing cracking in the asphalt layer.
However, it is also within the scope of the invention that such a reinforcing layer system 1 can be used for securing an asphalt sealing layer, for example in landfill or dyke construction or in airport construction.

Das Armierungs-Schichtsystem nach den Fig. 4 bis 6 wird nur dort näher beschrieben, wo sein Aufbau bzw. seine Herstellung und Verlegung sich von dem unterscheiden, was oben im Zusammenhang mit den Fig. 1 bis 3 ausgeführt wurde Das Armierungs-Schichtsystem nach den Fig. 4 bis 6 weist eine Armierungsschicht 7 auf, die als Wirrgelege ausgeführt ist. Einzeifasern 8 der Armierungsschicht 7 sind Glasfasern. Alternativ können, wie bei der Armierungsschicht 2, auch Basalt-, Carbon- und/oder polymere Fasern zum Einsatz kommen.The reinforcing layer system according to FIGS. 4 to 6 will be described in more detail only where its structure and its manufacture and installation differ from what has been explained above in connection with FIGS. 1 to 3. The reinforcing layer system according to FIGS Fig. 4 to 6 has a reinforcing layer 7, which is designed as a tangle. Single fibers 8 of the reinforcing layer 7 are glass fibers. Alternatively, as with the reinforcing layer 2, also basalt, carbon and / or polymeric fibers may be used.

Die Flächendichte der Armierungsschicht 7 ist so gewählt, dass makroskopische Freiräume 9 zwischen den Einzelfasern 8 verbleiben. Diese Freiräume 9 werden beim Aufbringen der Asphaltschicht auf das aufgelegte Armierungs-Schichtsystem 1 nach den Fig. 4 bis 6 aufgrund des wärmebedingten Aufschmelzens bzw. Auflösens des Flächenelementes 5 freigegeben. Hierbei bilden sich in dem Flächenelement 5 Durchbrechungen 10, wie in Fig. 6 dargestellt.The surface density of the reinforcing layer 7 is chosen so that macroscopic free spaces 9 remain between the individual fibers 8. These free spaces 9 are released during the application of the asphalt layer on the applied reinforcement layer system 1 according to FIGS. 4 to 6 due to the heat-related melting or dissolution of the surface element 5. Here are formed in the surface element 5 openings 10, as shown in Fig. 6.

Claims (9)

Armierungs-Schichtsystem (1) zur flächenhaften Sicherung, eingebracht zwischen einer Unterlage und einer Asphaltschicht, - mit einer Armierungsschicht (2; 7), die eine Armierungsmatrix mit einer Vielzahl von zwischenliegenden Freiräumen (4; 9) aufweist, zur Aufnahme von in der Unterlage und/oder der Asphaltschicht auftretenden Spannungen, - mit mindestens einem direkt an die Armierungsschicht (2; 7) angrenzenden Flächenelement (5), dadurch gekennzeichnet, dass das Flächenelement (5) derart ausgestaltet ist, dass es - nach dem Auflegen auf die Unterlage einen durch das Armierungs-Schichtsystem (1) stattfindenden Stoffaustausch vorübergehend unterbindet und - sich aufgrund einer für die Herstellung der Asphaltschicht erforderlichen Erwärmung von diesem unter Freigabe zumindestens eines Teil der Freiräume (4; 9) zersetzt. Reinforcing layer system (1) for planar securing, introduced between a base and an asphalt layer, - having a reinforcing layer (2; 7) comprising a reinforcing matrix with a plurality of intermediate free spaces (4; 9) for receiving stresses occurring in the substrate and / or the asphalt layer, with at least one surface element (5) directly adjacent to the reinforcing layer (2, 7), characterized in that the surface element (5) is designed such that it - After placing on the pad a temporarily through the Armierungs-layer system (1) takes place substance exchange and - Due to a required for the production of the asphalt layer heating of this under release at least a part of the free spaces (4, 9) decomposes. Armierungs-Schichtsystem nach Anspruch 1, gekennzeichnet durch ein Gitternetz (3) als Armierungsmatrix.Reinforcing layer system according to claim 1, characterized by a mesh (3) as reinforcing matrix. Armierungs-Schichtsystem nach Anspruch 1, gekennzeichnet durch ein Wirrgelege (8) als Armierungsmatrix.Reinforcing layer system according to claim 1, characterized by a corotating layer (8) as reinforcing matrix. Armierungs-Schichtsystem nach einem der Ansprüche 1 bis 3, gekennzeichnet durch eine Glasfasern und/oder Basaltfasern und/oder Polymerfasern und/oder Carbonfasern aufweisende Armierungsschicht (2; 7).Reinforcing layer system according to one of claims 1 to 3, characterized by a reinforcing layer (2; 7) comprising glass fibers and / or basalt fibers and / or polymer fibers and / or carbon fibers. Armierungs-Schichtsystem nach einem der Ansprüche 1 bis 4, gekennzeichnet durch eine bitumenaffine Beschichtung der Armierungsschicht (2; 7) und/oder des Flächenelements (5).Reinforcing layer system according to one of claims 1 to 4, characterized by a bituminous coating of the reinforcing layer (2; 7) and / or of the surface element (5). Armierungs-Schichtsystem nach einem der Ansprüche 1 bis 5, gekennzeichnet durch eine Folienschicht als Flächenelement (5).Reinforcing layer system according to one of claims 1 to 5, characterized by a film layer as a surface element (5). Armierungs-Schichtsystem nach einem der Ansprüche 1 bis 5, gekennzeichnet durch eine Faserschicht als Flächenelement (5).Reinforcing layer system according to one of claims 1 to 5, characterized by a fiber layer as surface element (5). Armierungs-Schichtsystem nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Flächenelement (5) wasserdampfdurchlässig ausgeführt ist.Reinforcing layer system according to one of claims 1 to 7, characterized in that the surface element (5) is designed to be permeable to water vapor. Armierungs-Schichtsystem nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Flächenelement (5) ein Flächengewicht im Bereich zwischen 10 und 90 g/m2 aufweist.Reinforcing layer system according to one of claims 1 to 8, characterized in that the surface element (5) has a basis weight in the range between 10 and 90 g / m 2 .
EP06003207A 2005-02-22 2006-02-17 Reinforcement layer system Revoked EP1693517B1 (en)

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US8349431B2 (en) 2007-08-07 2013-01-08 Saint-Gobain Adfors America, Inc. Composite grid with tack film for asphaltic paving, method of paving, and process for making a composite grid with tack film for asphaltic paving
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FR3097572A1 (en) * 2019-06-24 2020-12-25 6 D Solutions LONG FIBER REINFORCEMENT DESIGNED FOR THE REINFORCEMENT OF BITUMINOUS COATINGS OF ROAD ROADS, AND METHOD OF MANUFACTURING A BITUMINOUS COATING OF ROADS USING SUCH A REINFORCEMENT
WO2020260218A1 (en) 2019-06-24 2020-12-30 6 D Solutions Road surfacing reinforcement of the cold surface dressing type and method for producing road surfacing using such a reinforcement

Also Published As

Publication number Publication date
PL1693517T3 (en) 2012-10-31
EP1693517B1 (en) 2012-05-30
EP1693517A3 (en) 2007-04-11
DE102005007947A1 (en) 2006-09-14

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