EP2944722B1 - Method for the preparation of a road surface - Google Patents

Method for the preparation of a road surface Download PDF

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Publication number
EP2944722B1
EP2944722B1 EP14167952.2A EP14167952A EP2944722B1 EP 2944722 B1 EP2944722 B1 EP 2944722B1 EP 14167952 A EP14167952 A EP 14167952A EP 2944722 B1 EP2944722 B1 EP 2944722B1
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EP
European Patent Office
Prior art keywords
carrier material
road surface
road
grit particles
cover layer
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EP14167952.2A
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German (de)
French (fr)
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EP2944722A1 (en
Inventor
Martin Muschalla
Willi Dietrich
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TPA GmbH
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TPA GmbH
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Publication date
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Priority to EP14167952.2A priority Critical patent/EP2944722B1/en
Publication of EP2944722A1 publication Critical patent/EP2944722A1/en
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Publication of EP2944722B1 publication Critical patent/EP2944722B1/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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders

Definitions

  • the invention relates to a method for producing a road surface according to the preamble of claim 1. Furthermore, the invention relates to a means by which a Abstreumaterial can be applied to a top layer of the road surface.
  • a spill material is applied to a newly produced top layer of the road surface, whereby a binder enriched on the surface of the cover layer, for. As bitumen, is bound.
  • mechanical spreaders are used to apply the Abstreumaterials.
  • the Abstreumaterial is applied by means of a roadway paver on the cover layer and then rolled by means of a roller in the still deformable cover layer.
  • a road paver known which comprises a screed and a reservoir in the direction of travel behind the screed.
  • the storage container has a split spreader with a metering roller, wherein the road paver another storage container is arranged, which is filled via filler neck with grit.
  • the grit is transported from the other reservoir to serving as a storage grit spreader.
  • the splitter spreader is a medium grit spreader, whereby a left splitter spreader and a right spreader spreader are arranged underneath.
  • Each of these grit spreaders contains at least one auger for pre-metering of the grit, with the auger of the central grit spreader conveying grit into or onto the left and right grit spreaders and the augers of the left and right grit spreaders spreading the grit across. Furthermore, a screw conveyor for transporting the grit from the other reservoir is arranged to serve as a storage medium grit spreader. Below each Splitter spreaders are a device for fine metering of the material to be spread, each with a metering roller and a guide plate with adjustable angles arranged.
  • a device for applying a marking film on a roadway which comprises a conveying element for feeding the marking film toward the roadway.
  • the US 2002/0190138 A1 describes a device for processing a surface of a sidewalk.
  • the invention is based on the object to provide a comparison with the prior art improved method for producing a road surface. Furthermore, the invention is based on the object to provide a means by which a Abstreumaterial can be applied to a top layer of the road surface.
  • a cover layer in particular made of asphalt, applied with a predetermined temperature to a support layer of a roadway superstructure by means of a pavement finisher, deducted and provided with a Abstreumaterial consisting of a plurality of split grains.
  • the split grains are incorporated in a carrier material and are applied to the top layer together with the carrier material.
  • the carrier material By means of the carrier material, it is possible to apply the spill material with a predetermined pattern evenly on the still warm top layer of the newly produced road surface.
  • the pattern is preferably designed uneven, so that the Abstreumaterial is particularly evenly applied unevenly on the newly produced road surface. This produces a surface texture corresponding to the predetermined pattern of the road surface, which ensures a high initial grip of the road surface and thus a high road safety of the entire roadway.
  • the spill material is applied to the newly produced road surface so that it has no undesirable road bumps.
  • a photocatalytically active material for example, is particularly preferred in and / or on the split grains. For example, titanium dioxide, so that the surface of the road surface has pollutant-reducing properties.
  • the carrier material applied to the cover layer and the split grains incorporated into the carrier material are rolled into the cover layer by means of a shaping device.
  • the forming device is, for example, a roller which is either arranged on the roadway paver or as a separate component, for. B. a so-called road roller is formed.
  • the split grains are metered onto the carrier material through an outlet opening of a container arranged in and / or on the roadway finisher, while the carrier material is unwound from a rolling body arranged in and / or on the roadway finisher.
  • the carrier material is equipped with the split grains immediately prior to application to the top layer, so that the production of the road surface and the integration of the split grains in the carrier material in a common manufacturing process.
  • the process is cost and time efficient feasible.
  • there is a risk of mechanical damage to the assembled carrier material reduced compared to a separate manufacturing process for equipping the carrier material with grit grains and an arrangement of the assembled carrier material in and / or on the roadway paver prior to the production of the road surface.
  • the carrier material can also be equipped in a separate manufacturing process with the Abstreumaterial and stored and transported, for example on rolling bodies, so that it is already equipped in the production of the road surface.
  • the carrier material according to the invention by means of which the spill material can be applied to the cover layer of the road surface, is designed as a band-shaped flat material.
  • the grit particles forming the scrap material are in each case arranged and fixed in material openings of the carrier material. This is a uniform in terms of the high expansion of the road surface application of the Abstreumaterials possible.
  • the carrier material predetermines a predetermined pattern of the scattering material on the cover layer, so that a surface texture of the road surface in its longitudinal and transverse extent can be determined beforehand by means of the band-shaped flat formation of the carrier material.
  • the carrier material can be arranged wound on a rolling body, so that even a large amount of the carrier material is transportable and can be applied to the cover layer during the production of the road surface.
  • the support material melts under the action of a temperature, in particular above a certain value of the temperature.
  • the carrier material is an aid for applying the Abstreumaterials on the top layer, without being part of the finished pavement.
  • the Stammsgriffmaschine the new road surface is thereby of the Scattering material and not additionally determined by the carrier material. Even an appearance of the new road surface is not affected by the substrate.
  • the carrier material is formed as a net or gauze-shaped textile fabric, which has a previously determinable number of material openings, each having uniform or alternatively different distances to each other in transverse dimension and in longitudinal alignment.
  • the substrate has a pattern with regular and irregular elements, whereby a pattern for the surface texture of the pavement can be determined beforehand.
  • the individual split grains are each arranged in a material opening of the carrier material, with its pointed end protruding through the material opening.
  • a diameter of a material opening is smaller than a largest diameter of a single grit particle, so that the grit grains can not fall through the material opening when being incorporated into the carrier material.
  • the textile fabric preferably has a correspondingly high strength, so that the application of the carrier material to the cover layer is possible as far as possible without subsequent alignment.
  • the textile fabric is preferably a heat-resistant fabric, so that the carrier material can melt when rolling the Abstreumaterials in the still warm outer layer of the newly produced road surface.
  • the carrier material is formed as a plastic film.
  • the plastic film has analogous to the first embodiment, corresponding material openings for receiving the split grains.
  • the plastic from which the carrier material is formed is preferably a heat-resistant plastic.
  • this can be equipped in a separate manufacturing process with the Abstreumaterial and arranged on a rolling body.
  • to Producing the Fahnbahndecke is arranged on the rolling body and already equipped with Abstreumaterial carrier material transported to the site.
  • FIG. 1 shows a road paver 1 for producing a road surface 2 of a roadway superstructure 3 in a schematic side view.
  • the road paver 1 comprises a drive unit, not shown, the z. B. has an internal combustion engine, the exhaust gases are passed through a likewise not shown exhaust system to the outside. Furthermore, the road paver 1 comprises a chassis, also not shown, which is designed as a wheel or alternatively as a crawler chassis. The chassis is driven by the drive unit such that the road paver 1 in a mounting direction R of the road surface 2 to be produced is moved forward.
  • a not shown reservoir is arranged in the region of the chassis, which serves for producing a cover layer 2.1 of the road surface 2 material, for.
  • a hot, bituminous material such as mastic asphalt
  • receives in the reservoir also another material, eg. As hot concrete, be included.
  • a distributor screw 1.1 and a screed 1.2 are arranged behind the chassis, the distributor screw 1.1 being arranged between the chassis and the screed 1.2.
  • the screed 1.2 and the auger 1.1 extend in their transverse extent over an entire working width of the road paver 1, which may have a fixed or variably adjustable width.
  • the screed 1.2 is movable up and down by a pivotable support arm 1.2.1 relative to the road paver 1.
  • the support arm 1.2.1 for example, mechanically coupled to the chassis.
  • the hot pavement material is distributed uniformly on a support layer 3.1 of the pavement superstructure 3 in front of the screed 1.2, preferably over the entire working width of the pavement paver 1.
  • the screed 1.2 serves to compress as possible by means of the auger 1.1 on the support layer 3.1 roadway material as possible and thus to produce a closed, planar structure of the cover layer 2.1.
  • a equipped with a spreader material 2.2 support material 4 wound on a semitransparent first roller body 1.4 is arranged, between the windings to protect the equipped with Abstreumaterial 2.2 support material 4, an intermediate insert 4.1 is mounted from a soft material as possible.
  • the first rolling body 1.4 is cylindrical and preferably extends over the entire working width of the road paver 1.
  • the first rolling body 1.4 is rotatably coupled mechanically by means of further support arms 1.3 with the road paver 1 relative to this.
  • the axis of rotation of the first rolling body 1.4 extends parallel to the transverse extent of the road paver. 1
  • the wound on the first roller body 1.4 support material 4 has a width corresponding to the first rolling body 1.4 and is formed as a band-shaped flat material which is heat-resistant.
  • the carrier material 4 is formed from a mesh or gauze-shaped textile fabric or from a plastic which has a multiplicity of material openings.
  • the material openings in this case have in cross-section, in sections, the same or alternatively different distances from one another, so that the mesh or gauze structure of the carrier material 4 has a regular or irregular pattern in transverse dimension.
  • the distances of the material openings to one another are preferably constant, so that, in particular, a pattern extending uniformly in longitudinal extent results.
  • a grit of the spreader material 2.2 is arranged, which comprises a plurality of grit particles.
  • the split grains are fragments of a rock material, in and / or to each of which a photocatalytically active material, eg. As titanium dioxide is bound.
  • the split grains are arranged in the material openings such that they each project with their pointed ends through the material opening, wherein a respective diameter of the material openings is smaller than a largest diameter of the respective split grains. This keeps the split grains in the material openings without falling through them.
  • the spill material 2.2 is applied by unwinding the carrier material 4 of the first rolling body 1.4 in the clockwise direction on the still warm cover layer 2.1.
  • the stocked with the Abstreummaterial 2.2 substrate 4 is thereby deflected by a second roller body 1.5 corresponding to the cover layer 2.1.
  • the deflection of the carrier material 4 preferably takes place by means of further, not shown, rolling bodies whose axes of rotation are each parallel to the axis of rotation of the first rolling body 1.4.
  • the intermediate insert 4.1 is not deflected during unwinding of the assembled carrier material 4 on the cover layer 2.1, but in a receiving device, which is not shown, added.
  • the carrier material 4 is applied to the cover layer 2.1 in such a way that the split grains projecting through the material openings of the carrier material 4 are applied with their pointed ends to the warm cover layer 2.1. Characterized in that the cover layer 2.1 is still warm, is located on the surface of the cover layer 2.1, the binder bitumen, which is bound by the split grains. Subsequently, the carrier material 4 and the spreader material 2.2 are rolled by means of a roller 5 in the cover layer 2.1.
  • the roller 5 can be part of the road paver 1 and is arranged in the installation direction R behind the screed 1.2 or the roller 5 is a separate component and is machined or manually over the provided with Abstreumaterial 2.2 cover layer 2.1 in direction of installation R moves.
  • the grit particles are pressed into the cover layer 2.1, while the support material 4 due to the effect of temperature of the cover layer 2.1 and the force the roller 5 melts.
  • the finished road surface 2 is thus formed from the cover layer 2.1 and the spill material 2.2.
  • the spill material 2.2 with a desired pattern on the cover layer 2.1 can be applied, so that a frictional resistance of the finished pavement 2 is predictable.
  • a number of loose grit grains can be reduced.
  • the respective photocatalytically active material bound to the grit grains it is possible to reduce pollution of the environment by exhaust gases from vehicles running on the roadway superstructure 3.
  • a photocatalytic property z As the titanium dioxide, which takes place by the action of ultraviolet radiation and oxygen, a chemical reaction between the titanium dioxide and the nitrogen oxides contained in the exhaust gases and the nitrogen oxides are largely decomposed.
  • the titanium dioxide can be bound within the split grains as nanoparticles or envelop them as a coating. It is also possible that only the core of the split grains contains titanium dioxide. In this case, the photocatalytically active titanium dioxide is exposed only over time, namely by driving on the road surface 3.
  • the use of photocatalytically active materials in the pavement 2 is particularly advantageous because the emissions of vehicles contact the pavement 2 directly and thus a very high Pollutant reduction is possible.
  • FIG. 2 shows an alternative embodiment of the invention, wherein the substrate 4 is fitted during the manufacture of the road surface 2 within the pavement finisher 1.
  • the road paver 1 itself is not shown in detail.
  • the carrier material 4 is wound, for example, on the first rolling body 1.4.
  • the first rolling body 1.4 arranged in the exemplary embodiment shown may also be another rolling body.
  • a trough-shaped or funnel-shaped container 1.6 is arranged, in which the spreader material 2.2 is accommodated.
  • the container 1.6 is above the developed carrier material 4, which is unwound in a first section opposite to the installation direction R arranged.
  • An end of the container 1.6 facing the carrier material 4 has an outlet opening from which the spreader material 2.2 is dispensed in a metered manner onto the continuously unwound carrier material 4.
  • the second rolling body 1.5 is formed as a telescopic rolling body with variable length.
  • the further rolling bodies 1.7 and the second rolling body 1.5 are each arranged above the carrier material 4.
  • a rotatable deflection device 1.8 is provided below the assembled carrier material 4 and in the installation direction R behind the container 1.6, which has a star-shaped cross-sectional profile and in the outer circumference through the material openings of the support material. 4 projecting tip ends of the grit grains engage as possible form fit.
  • the advantage of this embodiment of the invention lies in the fact that a mechanical stability of the assembled carrier material 4 is ensured, since a winding of the assembled carrier material 4 is not necessary.
  • the stocked carrier material 4 is applied to the cover layer 2.1 immediately after the placement of the spill material 2.2, so that a loss of individual grit grains compared to the in FIG. 1 described embodiment can be reduced.
  • FIG. 3 shows a not belonging to the invention embodiment, wherein the spill material 2.2 is not applied with a carrier material 4, but with a metering roller 6 on the cover layer 2.1.
  • the metering roller 6 is arranged on the road paver 1 in the direction of installation R behind the screed 1.2 and is either directly to the cover layer 2.1 or is spaced with respect to a high expansion of the road paver 1 to the cover layer 2.1.
  • a width of the metering roller 6 preferably corresponds to the entire working width of the road paver 1.
  • the metering roller 6 is made of a heat-resistant metal, for. As aluminum, or a metal alloy, for. As steel formed.
  • the spill material 2.2 is received in the container 1.6 and is metered through the outlet opening on the metering roller 6, which distributes the spill material 2.2 on the cover layer 2.1.
  • the container 1.6 may also be a container other than the one in FIG. 2 shown container 1.6 act.
  • FIG. 4 shows a possible embodiment of the metering roller 6 in a perspective view.
  • the metering roller 6 has on its outer circumference three sections 6.1 to 6.3 with different profiles.
  • a first section 6.1 has longitudinal incisions directed longitudinally of the metering roller 6, a second section 6.2 has a number of material openings distributed uniformly over the circumference, and a third section 6.3 has diamond-shaped notches.
  • the material openings and the diamond-shaped incisions each have a number of split grains can be introduced and loosely fixed there until they are applied by rotating the metering roller 6 on the cover layer 2.1.
  • a distribution of the spill material 2.2 on the cover layer 2.1 is possible with a predetermined pattern, so that a frictional resistance of the road surface 2 can also be predetermined.
  • FIGS. 5 to 7 show the metering roller 6 in various alternative embodiments in a respective perspective view.
  • the in FIG. 5 shown metering roller 6 is completely provided with the profile according to the first section 6.1, wherein the in FIG. 6 shown metering roller 6 is completely provided with the profile according to the second section 6.2.
  • the FIG. 7 shown metering roller 6 is provided with the profile according to the third section 6.3.
  • the execution of the profiles of sections 6.1 to 6.3 is shown only by way of example.
  • the profiles also other suitable forms, eg. B. triangular or rectangular incisions, have.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer Fahrbahndecke gemäß dem Oberbegriff des Anspruchs 1. Weiterhin betrifft die Erfindung ein Mittel, mit dem ein Abstreumaterial auf eine Deckschicht der Fahrbahndecke aufbringbar ist.The invention relates to a method for producing a road surface according to the preamble of claim 1. Furthermore, the invention relates to a means by which a Abstreumaterial can be applied to a top layer of the road surface.

Zur Erhöhung einer Anfangsgriffigkeit von neuen Fahrbahndecken wird ein Abstreumaterial auf eine neu hergestellte Deckschicht der Fahrbahndecke aufgebracht, wodurch ein sich an der Oberfläche der Deckschicht angereichertes Bindemittel, z. B. Bitumen, gebunden wird. Zur Erzielung einer hohen Anfangsgriffigkeit der Fahrbahndecke werden zum Aufbringen des Abstreumaterials maschinelle Streueinrichtungen eingesetzt. Beispielsweise wird das Abstreumaterial mittels eines Fahrbahnfertigers auf die Deckschicht aufgebracht und anschließend mittels einer Walze in die noch verformungsfähige Deckschicht eingewalzt.To increase an initial grip of new road surfaces, a spill material is applied to a newly produced top layer of the road surface, whereby a binder enriched on the surface of the cover layer, for. As bitumen, is bound. To achieve a high initial grip of the road surface mechanical spreaders are used to apply the Abstreumaterials. For example, the Abstreumaterial is applied by means of a roadway paver on the cover layer and then rolled by means of a roller in the still deformable cover layer.

Zur Herstellung einer Fahrbahndecke ist aus der EP 1 300 517 B1 ein Straßenfertiger bekannt, welcher eine Einbaubohle und einen Vorratsbehälter in Fahrtrichtung hinter der Einbaubohle umfasst. Der Vorratsbehälter weist einen Splittstreuer mit einer Dosierwalze auf, wobei am Straßenfertiger ein weiterer Vorratsbehälter angeordnet ist, welcher über Einfüllstutzen mit Streugut befüllbar ist. Das Streugut wird von dem weiteren Vorratsbehälter zu dem als Vorratsbehälter dienenden Splittstreuer befördert. Der Splittstreuer ist dabei ein mittlerer Splittstreuer, wobei darunter jeweils versetzt ein linker Splittstreuer und ein rechter Splittstreuer angeordnet sind. Jeder dieser Splittstreuer beinhaltet zur Vordosierung des Streugutes mindestens eine Verteilerschnecke, wobei die Verteilerschnecke des mittleren Splittstreuers Streugut in oder auf den linken und den rechten Splittstreuer befördert und die Verteilerschnecken des linken und des rechten Splittstreuers das Streugut quer verteilen. Weiterhin ist eine Förderschnecke zum Transport des Streuguts von dem weiteren Vorratsbehälter zu dem als Vorratsbehälter dienenden mittleren Splittstreuer angeordnet. Unterhalb jedes Splittstreuers sind eine Einrichtung zur Feindosierung des Streugutes mit jeweils einer Dosierwalze und ein Leitblech mit verstellbaren Winkeln angeordnet.For the production of a road surface is from the EP 1 300 517 B1 a road paver known which comprises a screed and a reservoir in the direction of travel behind the screed. The storage container has a split spreader with a metering roller, wherein the road paver another storage container is arranged, which is filled via filler neck with grit. The grit is transported from the other reservoir to serving as a storage grit spreader. The splitter spreader is a medium grit spreader, whereby a left splitter spreader and a right spreader spreader are arranged underneath. Each of these grit spreaders contains at least one auger for pre-metering of the grit, with the auger of the central grit spreader conveying grit into or onto the left and right grit spreaders and the augers of the left and right grit spreaders spreading the grit across. Furthermore, a screw conveyor for transporting the grit from the other reservoir is arranged to serve as a storage medium grit spreader. Below each Splitter spreaders are a device for fine metering of the material to be spread, each with a metering roller and a guide plate with adjustable angles arranged.

Weiterhin ist aus der WO 2013/159774 A2 eine Vorrichtung zum Aufbringen einer Markierungsfolie auf eine Fahrbahn bekannt, welche ein Förderelement zum Zuführen der Markierungsfolie in Richtung Fahrbahn umfasst.Furthermore, from the WO 2013/159774 A2 a device for applying a marking film on a roadway, which comprises a conveying element for feeding the marking film toward the roadway.

Die US 2002/0190138 A1 beschreibt eine Vorrichtung zur Bearbeitung einer Oberfläche eines Bürgersteigs.The US 2002/0190138 A1 describes a device for processing a surface of a sidewalk.

Der Erfindung liegt die Aufgabe zu Grunde, ein gegenüber dem Stand der Technik verbessertes Verfahren zur Herstellung einer Fahrbahndecke anzugeben. Weiterhin liegt der Erfindung die Aufgabe zu Grunde, ein Mittel anzugeben, mit dem ein Abstreumaterial auf eine Deckschicht der Fahrbahndecke aufbringbar ist.The invention is based on the object to provide a comparison with the prior art improved method for producing a road surface. Furthermore, the invention is based on the object to provide a means by which a Abstreumaterial can be applied to a top layer of the road surface.

Hinsichtlich des Verfahrens wird die Aufgabe erfindungsgemäß durch die in Anspruch 1 angegebenen Merkmale und hinsichtlich des Mittels durch die in Anspruch 5 angegebenen Merkmale gelöst.With regard to the method, the object is achieved by the features specified in claim 1 and in terms of the means by the features specified in claim 5.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Bei einem Verfahren zur Herstellung einer Fahrbahndecke wird eine Deckschicht, insbesondere aus Asphalt, mit einer vorbestimmten Temperatur auf eine Trägerschicht eines Fahrbahnoberbaus mittels eines Fahrbahnfertigers aufgebracht, abgezogen und mit einem Abstreumaterial, bestehend aus einer Vielzahl von Splittkörnern, versehen. Erfindungsgemäß sind die Splittkörner in ein Trägermaterial eingebunden und werden gemeinsam mit dem Trägermaterial auf die Deckschicht aufgebracht.In a method for producing a road surface, a cover layer, in particular made of asphalt, applied with a predetermined temperature to a support layer of a roadway superstructure by means of a pavement finisher, deducted and provided with a Abstreumaterial consisting of a plurality of split grains. According to the invention, the split grains are incorporated in a carrier material and are applied to the top layer together with the carrier material.

Mittels des Trägermaterials ist es möglich, das Abstreumaterial mit einem vorbestimmten Muster gleichmäßig auf die noch warme Deckschicht der neu herzustellenden Fahrbahndecke aufzubringen. Das Muster ist vorzugsweise ungleichmäßig ausgestaltet, so dass das Abstreumaterial insbesondere gleichmäßig ungleichmäßig auf die neu herzustellende Fahrbahndecke aufgebracht wird. Damit wird eine dem vorbestimmten Muster entsprechende Oberflächentextur der Fahrbahndecke erzeugt, die eine hohe Anfangsgriffigkeit der Fahrbahndecke und damit eine hohe Verkehrssicherheit der gesamten Fahrbahn sicherstellt. Zudem wird das Abstreumaterial derart auf die neu herzustellende Fahrbahndecke aufgebracht, so dass diese keine unerwünschten Fahrbahnunebenheiten aufweist. Besonders bevorzugt ist in und/oder an die Splittkörner jeweils ein photokatalytisch aktives Material, z. B. Titandioxid, gebunden, so dass die Oberfläche der Fahrbahndecke schadstoffreduzierende Eigenschaften aufweist.By means of the carrier material, it is possible to apply the spill material with a predetermined pattern evenly on the still warm top layer of the newly produced road surface. The pattern is preferably designed uneven, so that the Abstreumaterial is particularly evenly applied unevenly on the newly produced road surface. This produces a surface texture corresponding to the predetermined pattern of the road surface, which ensures a high initial grip of the road surface and thus a high road safety of the entire roadway. In addition, the spill material is applied to the newly produced road surface so that it has no undesirable road bumps. In each case, a photocatalytically active material, for example, is particularly preferred in and / or on the split grains. For example, titanium dioxide, so that the surface of the road surface has pollutant-reducing properties.

Das auf die Deckschicht aufgebrachte Trägermaterial und die in das Trägermaterial eingebundenen Splittkörner werden mittels einer Umformeinrichtung in die Deckschicht eingewalzt. Die Umformeinrichtung ist beispielsweise eine Walze, die entweder an dem Fahrbahnfertiger angeordnet oder als ein separates Bauteil, z. B. eine sogenannte Straßenwalze, ausgebildet ist. Durch das Einwalzen der Splittkörner in die noch warme Deckschicht wird ein an der Oberfläche der Deckschicht befindliches Bitumen gebunden und eine Anfangsgriffigkeit der Fahrbahndecke erhöht. Mittels des Trägermaterials sind die Splittkörner dauerhaft nach dem Einwalzen in der Fahrbahndecke eingebunden.The carrier material applied to the cover layer and the split grains incorporated into the carrier material are rolled into the cover layer by means of a shaping device. The forming device is, for example, a roller which is either arranged on the roadway paver or as a separate component, for. B. a so-called road roller is formed. By rolling the split grains into the still warm top layer, a bitumen located on the surface of the top layer is bound and an initial grip of the road surface is increased. By means of the carrier material, the split grains are permanently integrated into the road surface after rolling.

Zum Einbinden der Splittkörner in das Trägermaterial werden die Splittkörner durch eine Auslassöffnung eines in und/oder an dem Fahrbahnfertiger angeordneten Behälters dosiert auf dem Trägermaterial verteilt und fixiert, während das Trägermaterial von einem in und/oder an dem Fahrbahnfertiger angeordneten Rollkörper abgewickelt wird. Damit wird das Trägermaterial unmittelbar vor dem Aufbringen auf die Deckschicht mit den Splittkörnern bestückt, so dass die Herstellung des Fahrbahnbelags und das Einbinden der Splittkörner in das Trägermaterial in einem gemeinsamen Herstellungsprozess erfolgen. Damit ist das Verfahren kosten- und zeiteffizient durchführbar. Zudem ist ein Risiko für mechanische Beschädigungen des bestückten Trägermaterials gegenüber einem separaten Herstellungsprozess zur Bestückung des Trägermaterials mit Splittkörnern und einer Anordnung des bestückten Trägermaterials in und/oder an dem Fahrbahnfertiger vor der Herstellung der Fahrbahndecke verringert. Alternativ kann das Trägermaterial auch in einem separaten Herstellungsprozess mit dem Abstreumaterial bestückt werden und beispielsweise auf Rollkörper gelagert und transportiert werden, so dass dieses bei der Herstellung der Fahrbahndecke bereits bestückt ist.In order to incorporate the split grains into the carrier material, the split grains are metered onto the carrier material through an outlet opening of a container arranged in and / or on the roadway finisher, while the carrier material is unwound from a rolling body arranged in and / or on the roadway finisher. Thus, the carrier material is equipped with the split grains immediately prior to application to the top layer, so that the production of the road surface and the integration of the split grains in the carrier material in a common manufacturing process. Thus, the process is cost and time efficient feasible. In addition, there is a risk of mechanical damage to the assembled carrier material reduced compared to a separate manufacturing process for equipping the carrier material with grit grains and an arrangement of the assembled carrier material in and / or on the roadway paver prior to the production of the road surface. Alternatively, the carrier material can also be equipped in a separate manufacturing process with the Abstreumaterial and stored and transported, for example on rolling bodies, so that it is already equipped in the production of the road surface.

Beim dosierten Verteilen und Fixieren der Splittkörner werden diese derart in das Trägermaterial eingebunden, dass jeweils deren spitzes Ende durch das Trägermaterial hindurch in Richtung einer Oberfläche des Trägermaterials ragt, die beim Aufbringen des mit den Splittkörnern bestückten Trägermaterials auf die Deckschicht dieser zugewandt ist.When dosed distributing and fixing the split grains they are so integrated into the carrier material, that in each case their pointed end protrudes through the carrier material in the direction of a surface of the carrier material, which faces the covering layer when applying the stocked with the chip grains carrier material on this.

Das erfindungsgemäße Trägermaterial, mittels welchem das Abstreumaterial auf die Deckschicht der Fahrbahndecke aufbringbar ist, ist als ein bandförmiges Flachmaterial ausgebildet. Das Abstreumaterial bildende Splittkörner sind dabei jeweils in Materialöffnungen des Trägermaterials angeordnet und fixiert. Damit ist ein in Bezug auf die Hochausdehnung der Fahrbahndecke gleichmäßiges Aufbringen des Abstreumaterials möglich. Das Trägermaterial gibt dabei ein vorbestimmtes Muster des Abstreumaterials auf der Deckschicht vor, so dass mittels der bandförmigen Flachausbildung des Trägermaterials eine Oberflächentextur der Fahrbahndecke in deren Längs- und Querausdehnung vorher bestimmbar ist. Zudem kann das Trägermaterial auf einem Rollkörper aufgewickelt angeordnet sein, so dass auch eine große Menge des Trägermaterials transportierbar und während der Herstellung der Fahrbahndecke auf die Deckschicht aufbringbar ist.The carrier material according to the invention, by means of which the spill material can be applied to the cover layer of the road surface, is designed as a band-shaped flat material. The grit particles forming the scrap material are in each case arranged and fixed in material openings of the carrier material. This is a uniform in terms of the high expansion of the road surface application of the Abstreumaterials possible. In this case, the carrier material predetermines a predetermined pattern of the scattering material on the cover layer, so that a surface texture of the road surface in its longitudinal and transverse extent can be determined beforehand by means of the band-shaped flat formation of the carrier material. In addition, the carrier material can be arranged wound on a rolling body, so that even a large amount of the carrier material is transportable and can be applied to the cover layer during the production of the road surface.

Vorzugsweise schmilzt das Trägermaterial unter Einwirkung einer Temperatur, insbesondere ab einem bestimmten Wert der Temperatur, auf. Damit stellt das Trägermaterial ein Hilfsmittel zum Aufbringen des Abstreumaterials auf die Deckschicht dar, ohne Bestandteil der fertig hergestellten Fahrbahndecke zu sein. Die Anfangsgriffigkeit der neuen Fahrbahndecke wird dabei von dem Abstreumaterial und nicht zusätzlich von dem Trägermaterial bestimmt. Auch eine Optik der neuen Fahrbahndecke wird durch das Trägermaterial nicht beeinflusst.Preferably, the support material melts under the action of a temperature, in particular above a certain value of the temperature. Thus, the carrier material is an aid for applying the Abstreumaterials on the top layer, without being part of the finished pavement. The Anfangsgriffigkeit the new road surface is thereby of the Scattering material and not additionally determined by the carrier material. Even an appearance of the new road surface is not affected by the substrate.

In einer ersten bevorzugten Ausführungsform ist das Trägermaterial als ein netz-oder gazeförmiges Textilgewebe ausgebildet, welches eine vorher bestimmbare Anzahl von Materialöffnungen aufweist, die in Querausdehnung und in Längsausrichtung jeweils gleichmäßige oder alternativ unterschiedliche Abstände zueinander aufweisen. Damit weist das Trägermaterial ein Muster mit regelmäßigen und unregelmäßigen Elementen auf, wodurch ein Muster für die Oberflächentextur der Fahrbahndecke vorher bestimmbar ist. Die einzelnen Splittkörner sind dabei jeweils in einer Materialöffnung des Trägermaterials angeordnet, wobei deren spitzes Ende durch die Materialöffnung hindurchragt. Ein Durchmesser einer Materialöffnung ist dabei kleiner als ein größter Durchmesser eines einzelnen Splittkorns, so dass die Splittkörner beim Einbinden in das Trägermaterial nicht durch die Materialöffnung hindurch fallen können. Das Textilgewebe weist vorzugsweise eine entsprechend hohe Festigkeit auf, so dass das Aufbringen des Trägermaterials auf die Deckschicht möglichst ohne nachträgliches Ausrichten möglich ist. Darüber hinaus ist das Textilgewebe vorzugsweise ein hitzeunbeständiges Gewebe, so dass das Trägermaterial beim Einwalzen des Abstreumaterials in die noch warme Deckschicht der neu herzustellenden Fahrbahndecke aufschmelzen kann.In a first preferred embodiment, the carrier material is formed as a net or gauze-shaped textile fabric, which has a previously determinable number of material openings, each having uniform or alternatively different distances to each other in transverse dimension and in longitudinal alignment. Thus, the substrate has a pattern with regular and irregular elements, whereby a pattern for the surface texture of the pavement can be determined beforehand. The individual split grains are each arranged in a material opening of the carrier material, with its pointed end protruding through the material opening. A diameter of a material opening is smaller than a largest diameter of a single grit particle, so that the grit grains can not fall through the material opening when being incorporated into the carrier material. The textile fabric preferably has a correspondingly high strength, so that the application of the carrier material to the cover layer is possible as far as possible without subsequent alignment. In addition, the textile fabric is preferably a heat-resistant fabric, so that the carrier material can melt when rolling the Abstreumaterials in the still warm outer layer of the newly produced road surface.

In einer zweiten bevorzugten Ausführungsform ist das Trägermaterial als eine Kunststofffolie ausgebildet. Die Kunststofffolie weist dabei analog zur ersten Ausführungsform entsprechende Materialöffnungen zur Aufnahme der Splittkörner auf. Der Kunststoff, aus dem das Trägermaterial gebildet ist, ist vorzugsweise ein hitzeunbeständiger Kunststoff.In a second preferred embodiment, the carrier material is formed as a plastic film. The plastic film has analogous to the first embodiment, corresponding material openings for receiving the split grains. The plastic from which the carrier material is formed is preferably a heat-resistant plastic.

Sowohl in der ersten als auch in der zweiten bevorzugten Ausführungsform des Trägermaterials, kann dieses in einem separaten Herstellungsprozess mit dem Abstreumaterial bestückt und auf einem Rollkörper angeordnet werden. Zur Herstellung der Fahnbahndecke wird das auf dem Rollkörper angeordnete und bereits mit Abstreumaterial bestückte Trägermaterial zur Baustelle transportiert.Both in the first and in the second preferred embodiment of the carrier material, this can be equipped in a separate manufacturing process with the Abstreumaterial and arranged on a rolling body. to Producing the Fahnbahndecke is arranged on the rolling body and already equipped with Abstreumaterial carrier material transported to the site.

Ausführungsbeispiele der Erfindung werden im Folgenden anhand von Zeichnungen näher erläutert.Embodiments of the invention are explained in more detail below with reference to drawings.

Darin zeigen:

Figur 1
schematisch einen Fahrbahnfertiger zur Herstellung einer Fahrbahndecke mit einem mit einem Abstreumaterial vorbestückten Trägermaterial,
Figur 2
schematisch eine Seitenansicht eines Ausschnitts des Fahrbahnfertigers mit dem Trägermaterial, welches während der Herstellung der Fahrbahndecke mit dem Abstreumaterial bestückt wird,
Figur 3
schematisch eine an dem Fahrbahnfertiger angeordnete nicht zur Erfindung gehörende Dosierwalze zum Aufbringen des Abstreumaterials auf eine Deckschicht der Fahrbahndecke in Seitenansicht,
Figur 4
schematisch eine perspektivische Ansicht der nicht zur Erfindung gehörenden Dosierwalze in einer möglichen Ausführungsform,
Figur 5
schematisch eine perspektivische Ansicht der nicht zur Erfindung gehörenden Dosierwalze in einer ersten alternativen Ausführungsform,
Figur 6
schematisch eine perspektivische Ansicht der nicht zur Erfindung gehörenden Dosierwalze in einer zweiten alternativen Ausführungsform und
Figur 7
schematisch eine perspektivische Ansicht der nicht zur Erfindung gehörenden Dosierwalze in einer dritten alternativen Ausführungsform.
Show:
FIG. 1
1 schematically shows a roadway paver for producing a road surface with a carrier material pre-fitted with a spreader material,
FIG. 2
FIG. 2 is a schematic side view of a detail of the road paver with the carrier material, which is equipped with the spill material during the production of the road surface,
FIG. 3
schematically a arranged on the road finisher not belonging to the invention metering roller for applying the Abstreumaterials on a cover layer of the road surface in side view,
FIG. 4
1 schematically shows a perspective view of the metering roller not belonging to the invention in a possible embodiment,
FIG. 5
1 is a schematic perspective view of the metering roller not belonging to the invention in a first alternative embodiment,
FIG. 6
schematically a perspective view of not belonging to the invention metering roller in a second alternative embodiment and
FIG. 7
schematically a perspective view of not belonging to the invention metering roller in a third alternative embodiment.

Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.

Figur 1 zeigt einen Fahrbahnfertiger 1 zur Herstellung einer Fahrbahndecke 2 eines Fahrbahnoberbaus 3 in schematischer Seitenansicht. FIG. 1 shows a road paver 1 for producing a road surface 2 of a roadway superstructure 3 in a schematic side view.

Der Fahrbahnfertiger 1 umfasst eine nicht dargestellte Antriebseinheit, die z. B. einen Verbrennungsmotor aufweist, dessen Abgase durch eine ebenfalls nicht dargestellte Abgasanlage ins Freie geleitet werden. Weiterhin umfasst der Fahrbahnfertiger 1 ein ebenfalls nicht dargestelltes Fahrwerk, welches als ein Radfahrwerk oder alternativ als ein Raupenfahrwerk ausgebildet ist. Das Fahrwerk wird von der Antriebseinheit derart angetrieben, dass der Fahrbahnfertiger 1 in eine Einbaurichtung R der herzustellenden Fahrbahndecke 2 vorwärtsbewegbar ist.The road paver 1 comprises a drive unit, not shown, the z. B. has an internal combustion engine, the exhaust gases are passed through a likewise not shown exhaust system to the outside. Furthermore, the road paver 1 comprises a chassis, also not shown, which is designed as a wheel or alternatively as a crawler chassis. The chassis is driven by the drive unit such that the road paver 1 in a mounting direction R of the road surface 2 to be produced is moved forward.

Zur Herstellung der Fahrbahndecke 2 ist im Bereich des Fahrwerks ein nicht gezeigter Vorratsbehälter angeordnet, welcher ein zur Herstellung einer Deckschicht 2.1 der Fahrbahndecke 2 dienendes Material, z. B. ein heißes, bituminöses Material wie Gussasphalt, aufnimmt. Alternativ kann in dem Vorratsbehälter auch ein anderes Material, z. B. heißer Beton, aufgenommen sein.For the production of the road surface 2 a not shown reservoir is arranged in the region of the chassis, which serves for producing a cover layer 2.1 of the road surface 2 material, for. As a hot, bituminous material such as mastic asphalt, receives. Alternatively, in the reservoir also another material, eg. As hot concrete, be included.

In Bezug auf die Einbaurichtung R sind hinter dem Fahrwerk eine Verteilerschnecke 1.1 und eine Einbaubohle 1.2 angeordnet, wobei die Verteilerschnecke 1.1 zwischen dem Fahrwerk und der Einbaubohle 1.2 angeordnet ist. Die Einbaubohle 1.2 und die Verteilerschnecke 1.1 erstrecken sich in deren Querausdehnung über eine gesamte Arbeitsbreite des Fahrbahnfertigers 1, wobei diese eine feste oder auch variabel einstellbare Breite aufweisen können. Insbesondere die Einbaubohle 1.2 ist durch einen verschwenkbaren Tragarm 1.2.1 relativ zum Fahrbahnfertiger 1 auf- und abbewegbar. Der Tragarm 1.2.1 ist beispielsweise mit dem Fahrwerk mechanisch gekoppelt.With regard to the direction of installation R, a distributor screw 1.1 and a screed 1.2 are arranged behind the chassis, the distributor screw 1.1 being arranged between the chassis and the screed 1.2. The screed 1.2 and the auger 1.1 extend in their transverse extent over an entire working width of the road paver 1, which may have a fixed or variably adjustable width. In particular, the screed 1.2 is movable up and down by a pivotable support arm 1.2.1 relative to the road paver 1. The support arm 1.2.1, for example, mechanically coupled to the chassis.

Mittels der Verteilerschnecke 1.1 wird das heiße Fahrbahndeckenmaterial vor der Einbaubohle 1.2, vorzugsweise über die gesamten Arbeitsbreite des Fahrbahnfertigers 1, gleichmäßig auf einer Tragschicht 3.1 des Fahrbahnoberbaus 3 verteilt. Die Einbaubohle 1.2 dient dazu, das mittels der Verteilerschnecke 1.1 auf die Tragschicht 3.1 aufgebrachte Fahrbahnmaterial möglichst gleichmäßig zu verdichten und damit eine geschlossene, ebene Struktur der Deckschicht 2.1 zu erzeugen.By means of the auger 1.1, the hot pavement material is distributed uniformly on a support layer 3.1 of the pavement superstructure 3 in front of the screed 1.2, preferably over the entire working width of the pavement paver 1. The screed 1.2 serves to compress as possible by means of the auger 1.1 on the support layer 3.1 roadway material as possible and thus to produce a closed, planar structure of the cover layer 2.1.

Im gezeigten Ausführungsbeispiel ist oberhalb der Einbaubohle 1.2 ein mit einem Abstreumaterial 2.2 bestücktes Trägermaterial 4 auf einem semitransparent dargestellten ersten Rollkörper 1.4 aufgewickelt angeordnet, wobei zwischen den Wicklungen zum Schutz des mit Abstreumaterial 2.2 bestückten Trägermaterials 4 eine Zwischeneinlage 4.1 aus einem möglichst weichen Material gelagert ist.In the illustrated embodiment, above the screed 1.2 a equipped with a spreader material 2.2 support material 4 wound on a semitransparent first roller body 1.4 is arranged, between the windings to protect the equipped with Abstreumaterial 2.2 support material 4, an intermediate insert 4.1 is mounted from a soft material as possible.

Der erste Rollkörper 1.4 ist zylindrisch ausgebildet und erstreckt sich vorzugsweise über die gesamte Arbeitsbreite des Fahrbahnfertigers 1. Der erste Rollkörper 1.4 ist mittels weiterer Tragarme 1.3 mit dem Fahrbahnfertiger 1 relativ zu diesem drehbar mechanisch gekoppelt. Die Drehachse des ersten Rollkörpers 1.4 erstreckt sich dabei parallel zur Querausdehnung des Fahrbahnfertigers 1.The first rolling body 1.4 is cylindrical and preferably extends over the entire working width of the road paver 1. The first rolling body 1.4 is rotatably coupled mechanically by means of further support arms 1.3 with the road paver 1 relative to this. The axis of rotation of the first rolling body 1.4 extends parallel to the transverse extent of the road paver. 1

Das auf den ersten Rollkörper 1.4 aufgewickelte Trägermaterial 4 weist eine dem ersten Rollkörper 1.4 entsprechende Breite auf und ist als bandförmiges Flachmaterial ausgebildet, welches hitzeunbeständig ist. Beispielsweise ist das Trägermaterial 4 aus einem netz- oder gazeförmigen Textilgewebe oder aus einem Kunststoff gebildet, welcher eine Vielzahl von Materialöffnungen aufweist.The wound on the first roller body 1.4 support material 4 has a width corresponding to the first rolling body 1.4 and is formed as a band-shaped flat material which is heat-resistant. For example, the carrier material 4 is formed from a mesh or gauze-shaped textile fabric or from a plastic which has a multiplicity of material openings.

Die Materialöffnungen weisen dabei in Querausdehnung abschnittsweise gleiche oder alternativ unterschiedliche Abstände zueinander auf, so dass die Netz- oder Gazestruktur des Trägermaterials 4 in Querausdehnung ein regelmäßiges beziehungsweise unregelmäßiges Muster aufweist. In Längsausdehnung des Trägermaterials 4 sind die Abstände der Materialöffnungen zueinander vorzugsweise gleichbleibend, so dass sich insbesondere ein in Längsausdehnung gleichmäßig erstreckendes Muster ergibt.The material openings in this case have in cross-section, in sections, the same or alternatively different distances from one another, so that the mesh or gauze structure of the carrier material 4 has a regular or irregular pattern in transverse dimension. In longitudinal extent of the carrier material 4, the distances of the material openings to one another are preferably constant, so that, in particular, a pattern extending uniformly in longitudinal extent results.

In den Materialöffnungen ist jeweils ein Splittkorn des Abstreumaterials 2.2 angeordnet, welches eine Vielzahl dieser Splittkörner umfasst. Die Splittkörner sind dabei Bruchstücke eines Gesteinsmaterials, in und/oder an welche jeweils ein photokatalytisch aktives Material, z. B. Titandioxid, gebunden ist.In each of the material openings, a grit of the spreader material 2.2 is arranged, which comprises a plurality of grit particles. The split grains are fragments of a rock material, in and / or to each of which a photocatalytically active material, eg. As titanium dioxide is bound.

Die Splittkörner sind derart in den Materialöffnungen angeordnet, dass diese mit ihren spitzen Enden jeweils durch die Materialöffnung hindurch ragen, wobei ein jeweiliger Durchmesser der Materialöffnungen kleiner als ein größter Durchmesser der jeweiligen Splittkörner ist. Damit bleiben die Splittkörner in den Materialöffnungen angeordnet, ohne durch diese hindurch zu fallen.The split grains are arranged in the material openings such that they each project with their pointed ends through the material opening, wherein a respective diameter of the material openings is smaller than a largest diameter of the respective split grains. This keeps the split grains in the material openings without falling through them.

Das Abstreumaterial 2.2 wird durch Abwickeln des Trägermaterials 4 von dem ersten Rollkörper 1.4 in Uhrzeigerrichtung auf die noch warme Deckschicht 2.1 aufgebracht. Das mit dem Abstreumaterial 2.2 bestückte Trägermaterial 4 wird dabei durch einen zweiten Rollkörper 1.5 entsprechend auf die Deckschicht 2.1 umgelenkt. Vorzugsweise erfolgt die Umlenkung des Trägermaterials 4 mittels weiterer, nicht gezeigter Rollkörper, deren Drehachsen jeweils parallel zur Drehachse des ersten Rollkörpers 1.4 sind. Die Zwischeneinlage 4.1 wird beim Abwickeln des bestückten Trägermaterials 4 nicht auf die Deckschicht 2.1 umgelenkt, sondern in einer Aufnahmeeinrichtung, welche nicht dargestellt ist, aufgenommen.The spill material 2.2 is applied by unwinding the carrier material 4 of the first rolling body 1.4 in the clockwise direction on the still warm cover layer 2.1. The stocked with the Abstreummaterial 2.2 substrate 4 is thereby deflected by a second roller body 1.5 corresponding to the cover layer 2.1. The deflection of the carrier material 4 preferably takes place by means of further, not shown, rolling bodies whose axes of rotation are each parallel to the axis of rotation of the first rolling body 1.4. The intermediate insert 4.1 is not deflected during unwinding of the assembled carrier material 4 on the cover layer 2.1, but in a receiving device, which is not shown, added.

Das Trägermaterial 4 wird dabei derart auf die Deckschicht 2.1 aufgebracht, dass die durch die Materialöffnungen des Trägermaterials 4 hindurchragenden Splittkörner mit ihren spitzen Enden auf die warme Deckschicht 2.1 aufgebracht werden. Dadurch, dass die Deckschicht 2.1 noch warm ist, befindet sich an der Oberfläche der Deckschicht 2.1 das Bindemittel Bitumen, welches durch die Splittkörner gebunden wird. Anschließend werden das Trägermaterial 4 und das Abstreumaterial 2.2 mittels einer Walze 5 in die Deckschicht 2.1 eingewalzt. Die Walze 5 kann dabei Bestandteil des Fahrbahnfertigers 1 sein und ist in Einbaurichtung R hinter der Einbaubohle 1.2 angeordnet oder die Walze 5 ist ein separates Bauteil und wird maschinell oder manuell über die mit Abstreumaterial 2.2 versehene Deckschicht 2.1 in Einbaurichtung R bewegt.In this case, the carrier material 4 is applied to the cover layer 2.1 in such a way that the split grains projecting through the material openings of the carrier material 4 are applied with their pointed ends to the warm cover layer 2.1. Characterized in that the cover layer 2.1 is still warm, is located on the surface of the cover layer 2.1, the binder bitumen, which is bound by the split grains. Subsequently, the carrier material 4 and the spreader material 2.2 are rolled by means of a roller 5 in the cover layer 2.1. The roller 5 can be part of the road paver 1 and is arranged in the installation direction R behind the screed 1.2 or the roller 5 is a separate component and is machined or manually over the provided with Abstreumaterial 2.2 cover layer 2.1 in direction of installation R moves.

Beim Einwalzen des Abstreumaterials 2.2 in die Deckschicht 2.1 werden die Splittkörner in die Deckschicht 2.1 hinein gedrückt, während das Trägermaterial 4 aufgrund der Temperatureinwirkung der Deckschicht 2.1 und der Krafteinwirkung der Walze 5 aufschmilzt. Die fertig hergestellte Fahrbahndecke 2 ist somit aus der Deckschicht 2.1 und dem Abstreumaterial 2.2 gebildet.During rolling of the spill material 2.2 in the cover layer 2.1, the grit particles are pressed into the cover layer 2.1, while the support material 4 due to the effect of temperature of the cover layer 2.1 and the force the roller 5 melts. The finished road surface 2 is thus formed from the cover layer 2.1 and the spill material 2.2.

Mittels des Trägermaterials 4 ist das Abstreumaterial 2.2 mit einem gewünschten Muster auf der Deckschicht 2.1 aufbringbar, so dass ein Reibungswiderstand der fertig hergestellten Fahrbahndecke 2 vorherbestimmbar ist. Zudem ist durch die Anordnung des Abstreumaterials 2.2 in dem Trägermaterial 4 eine Anzahl loser Splittkörner verringerbar.By means of the carrier material 4, the spill material 2.2 with a desired pattern on the cover layer 2.1 can be applied, so that a frictional resistance of the finished pavement 2 is predictable. In addition, by the arrangement of the Abstreumaterials 2.2 in the carrier material 4, a number of loose grit grains can be reduced.

Mittels des jeweils an die Splittkörner gebundenen photokatalytisch aktiven Materials kann eine Schadstoffbelastung der Umwelt durch Abgase von den Fahrbahnoberbau 3 befahrenden Fahrzeugen reduziert werden. Dabei wird eine photokatalytische Eigenschaft z. B. des Titandioxids genutzt, wobei durch Einwirkung von ultravioletter Strahlung und Sauerstoff eine chemische Reaktion zwischen dem Titandioxid und den in den Abgasen enthaltenen Stickoxiden stattfindet und die Stickoxide weitestgehend zersetzt werden. Das Titandioxid kann dabei innerhalb der Splittkörner als Nanopartikel gebunden sein oder diese als eine Beschichtung umhüllen. Auch ist es möglich, dass nur der Kern der Splittkörner Titandioxid enthält. In diesem Fall wird das photokatalytisch aktive Titandioxid erst mit der Zeit freigelegt, nämlich durch Befahren des Fahrbahnoberbaus 3. Der Einsatz photokatalytisch aktiver Materialien in der Fahrbahndecke 2 ist insbesondere deshalb vorteilhaft, weil die Emissionen der Fahrzeuge die Fahrbahndecke 2 direkt kontaktieren und somit eine sehr hohe Schadstoffreduzierung möglich ist.By means of the respective photocatalytically active material bound to the grit grains, it is possible to reduce pollution of the environment by exhaust gases from vehicles running on the roadway superstructure 3. In this case, a photocatalytic property z. As the titanium dioxide, which takes place by the action of ultraviolet radiation and oxygen, a chemical reaction between the titanium dioxide and the nitrogen oxides contained in the exhaust gases and the nitrogen oxides are largely decomposed. The titanium dioxide can be bound within the split grains as nanoparticles or envelop them as a coating. It is also possible that only the core of the split grains contains titanium dioxide. In this case, the photocatalytically active titanium dioxide is exposed only over time, namely by driving on the road surface 3. The use of photocatalytically active materials in the pavement 2 is particularly advantageous because the emissions of vehicles contact the pavement 2 directly and thus a very high Pollutant reduction is possible.

Figur 2 zeigt eine alternative Ausführung der Erfindung, wobei das Trägermaterial 4 während der Herstellung der Fahrbahndecke 2 innerhalb des Fahrbahnfertigers 1 bestückt wird. Der Fahrbahnfertiger 1 selbst ist dabei nicht näher dargestellt. FIG. 2 shows an alternative embodiment of the invention, wherein the substrate 4 is fitted during the manufacture of the road surface 2 within the pavement finisher 1. The road paver 1 itself is not shown in detail.

Das Trägermaterial 4 ist beispielsweise auf dem ersten Rollkörper 1.4 aufgewickelt. Alternativ kann es sich bei dem im gezeigten Ausführungsbeispiel angeordneten ersten Rollkörper 1.4 auch um einen anderen Rollkörper handeln.The carrier material 4 is wound, for example, on the first rolling body 1.4. Alternatively, the first rolling body 1.4 arranged in the exemplary embodiment shown may also be another rolling body.

In Einbaurichtung R hinter dem ersten Rollkörper 1.4 ist ein mulden- oder trichterförmiger Behälter 1.6 angeordnet, in welchem das Abstreumaterial 2.2 aufgenommen ist. Der Behälter 1.6 ist oberhalb des abgewickelten Trägermaterials 4, welches in einem ersten Abschnitt entgegen der Einbaurichtung R abgewickelt wird, angeordnet.In the installation direction R behind the first roller body 1.4, a trough-shaped or funnel-shaped container 1.6 is arranged, in which the spreader material 2.2 is accommodated. The container 1.6 is above the developed carrier material 4, which is unwound in a first section opposite to the installation direction R arranged.

Ein dem Trägermaterial 4 zugewandtes Ende des Behälters 1.6 weist eine Auslassöffnung auf, aus der das Abstreumaterial 2.2 dosiert auf dem kontinuierlich abgewickelten Trägermaterial 4 verteilt wird.An end of the container 1.6 facing the carrier material 4 has an outlet opening from which the spreader material 2.2 is dispensed in a metered manner onto the continuously unwound carrier material 4.

Zur Umlenkung und Führung des Trägermaterials 4 und des mit Abstreumaterial 2.2 bestückten Trägermaterials 4 sind eine Anzahl verschiedener weiterer Rollkörper 1.7 zwischen dem ersten Rollkörper 1.4 und dem zweiten Rollkörper 1.5 angeordnet, wobei es sich bei dem zweiten Rollkörper 1.5 auch um einen anderen Rollkörper als in Figur 1 gezeigt handeln kann, z. B. ist der zweite Rollkörper 1.5 als ein Teleskoprollkörper mit variabler Länge ausgebildet.For deflecting and guiding the carrier material 4 and the carrier material 4 equipped with scraping material 2.2, a number of different further rolling bodies 1.7 are arranged between the first rolling body 1.4 and the second rolling body 1.5, wherein the second rolling body 1.5 is also a different rolling body than in FIG FIG. 1 shown can act, for. For example, the second rolling body 1.5 is formed as a telescopic rolling body with variable length.

Die weiteren Rollkörper 1.7 und der zweite Rollkörper 1.5 sind jeweils oberhalb des Trägermaterials 4 angeordnet. Für eine mechanisch stabile Umlenkung des mit dem Abstreumaterial 2.2 bestückten Trägerelements 4 ist unterhalb des bestückten Trägermaterials 4 und in Einbaurichtung R hinter dem Behälter 1.6 eine rotierbare Umlenkeinrichtung 1.8 vorgesehen, die ein sternenförmiges Querschnittsprofil aufweist und in deren äußeren Umfang die durch die Materialöffnungen des Trägermaterials 4 hindurchragenden spitzen Enden der Splittkörner möglichst formschlüssig eingreifen.The further rolling bodies 1.7 and the second rolling body 1.5 are each arranged above the carrier material 4. For a mechanically stable deflection of the support element 4 equipped with the spreader material 2.2, a rotatable deflection device 1.8 is provided below the assembled carrier material 4 and in the installation direction R behind the container 1.6, which has a star-shaped cross-sectional profile and in the outer circumference through the material openings of the support material. 4 projecting tip ends of the grit grains engage as possible form fit.

Das Aufbringen des mit Abstreumaterial 2.2 bestückten Trägermaterials 4 auf die Deckschicht 2.1 und das Einwalzen des bestückten Trägermaterials 4 in die Deckschicht 2.1 erfolgt dabei analog zur Beschreibung der Figur 1.The application of the stocking material 2.2 equipped with carrier material 4 on the cover layer 2.1 and the rolling of the assembled carrier material 4 in the cover layer 2.1 is carried out analogously to the description of FIG. 1 ,

Der Vorteil dieser Ausführungsform der Erfindung liegt insbesondere darin, dass eine mechanische Stabilität des bestückten Trägermaterials 4 sichergestellt ist, da ein Aufwickeln des bestückten Trägermaterials 4 nicht notwendig ist. Das bestückte Trägermaterial 4 wird unmittelbar nach der Bestückung mit dem Abstreumaterial 2.2 auf die Deckschicht 2.1 aufgebracht, so dass ein Verlust einzelner Splittkörner gegenüber der in Figur 1 beschriebenen Ausführungsform verringert werden kann.The advantage of this embodiment of the invention lies in the fact that a mechanical stability of the assembled carrier material 4 is ensured, since a winding of the assembled carrier material 4 is not necessary. The stocked carrier material 4 is applied to the cover layer 2.1 immediately after the placement of the spill material 2.2, so that a loss of individual grit grains compared to the in FIG. 1 described embodiment can be reduced.

Figur 3 zeigt eine nicht zur Erfindung gehörende Ausführung, wobei das Abstreumaterial 2.2 nicht mit einem Trägermaterial 4, sondern mit einer Dosierwalze 6 auf die Deckschicht 2.1 aufgebracht wird. FIG. 3 shows a not belonging to the invention embodiment, wherein the spill material 2.2 is not applied with a carrier material 4, but with a metering roller 6 on the cover layer 2.1.

Die Dosierwalze 6 ist an dem Fahrbahnfertiger 1 in Einbaurichtung R hinter der Einbaubohle 1.2 angeordnet und liegt entweder direkt an der Deckschicht 2.1 an oder ist in Bezug auf eine Hochausdehnung des Fahrbahnfertigers 1 zur Deckschicht 2.1 beabstandet. Eine Breite der Dosierwalze 6 korrespondiert vorzugsweise mit der gesamten Arbeitsbreite des Fahrbahnfertigers 1. Die Dosierwalze 6 ist aus einem hitzebeständigen Metall, z. B. Aluminium, oder einer Metall-Legierung, z. B. Stahl, gebildet.The metering roller 6 is arranged on the road paver 1 in the direction of installation R behind the screed 1.2 and is either directly to the cover layer 2.1 or is spaced with respect to a high expansion of the road paver 1 to the cover layer 2.1. A width of the metering roller 6 preferably corresponds to the entire working width of the road paver 1. The metering roller 6 is made of a heat-resistant metal, for. As aluminum, or a metal alloy, for. As steel formed.

Das Abstreumaterial 2.2 ist in dem Behälter 1.6 aufgenommen und wird durch die Auslassöffnung dosiert auf der Dosierwalze 6 verteilt, welche das Abstreumaterial 2.2 auf der Deckschicht 2.1 verteilt. Bei dem Behälter 1.6 kann es sich auch um einen anderen Behälter als den in Figur 2 gezeigten Behälter 1.6 handeln. Alternativ ist es auch möglich, das Abstreumaterial 2.2 innerhalb der Dosierwalze 6 zu lagern, wobei diese entsprechende Materialöffnungen aufweist, durch die die einzelnen Splittkörner beim Rotieren der Dosierwalze 6 auf der Deckschicht 2.1 verteilt werden.The spill material 2.2 is received in the container 1.6 and is metered through the outlet opening on the metering roller 6, which distributes the spill material 2.2 on the cover layer 2.1. The container 1.6 may also be a container other than the one in FIG. 2 shown container 1.6 act. Alternatively, it is also possible to store the spill material 2.2 within the metering roller 6, wherein this has corresponding material openings through which the individual grit grains are distributed on the cover layer 2.1 during rotation of the metering roller 6.

Figur 4 zeigt ein mögliches Ausführungsbeispiel der Dosierwalze 6 in perspektivischer Ansicht. FIG. 4 shows a possible embodiment of the metering roller 6 in a perspective view.

Die Dosierwalze 6 weist an ihrem äußeren Umfang drei Abschnitte 6.1 bis 6.3 mit unterschiedlichen Profilen auf.The metering roller 6 has on its outer circumference three sections 6.1 to 6.3 with different profiles.

Ein erster Abschnitt 6.1 weist in Längsausdehnung der Dosierwalze 6 gerichtete Längseinschnitte auf, ein zweiter Abschnitt 6.2 weist eine Anzahl gleichmäßig über den Umfang verteilter Materialöffnungen auf und ein dritter Abschnitt 6.3 weist rautenförmige Einschnitte auf.A first section 6.1 has longitudinal incisions directed longitudinally of the metering roller 6, a second section 6.2 has a number of material openings distributed uniformly over the circumference, and a third section 6.3 has diamond-shaped notches.

In die Längseinschnitte, die Materialöffnungen und die rautenförmigen Einschnitte sind jeweils eine Anzahl von Splittkörnern einbringbar und dort lose fixiert, bis sie durch Rotieren der Dosierwalze 6 auf die Deckschicht 2.1 aufgebracht werden.In the longitudinal incisions, the material openings and the diamond-shaped incisions each have a number of split grains can be introduced and loosely fixed there until they are applied by rotating the metering roller 6 on the cover layer 2.1.

Mittels der unterschiedlich profilierten Abschnitte 6.1 bis 6.3 ist eine Verteilung des Abstreumaterials 2.2 auf der Deckschicht 2.1 mit einem vorherbestimmten Muster möglich, so dass ein Reibungswiderstand der Fahrbahndecke 2 ebenfalls vorherbestimmt werden kann.By means of the differently profiled sections 6.1 to 6.3, a distribution of the spill material 2.2 on the cover layer 2.1 is possible with a predetermined pattern, so that a frictional resistance of the road surface 2 can also be predetermined.

Die Figuren 5 bis 7 zeigen die Dosierwalze 6 in verschiedenen alternativen Ausführungsformen in jeweils perspektivischer Ansicht. Dabei ist die in Figur 5 gezeigte Dosierwalze 6 vollständig mit dem Profil gemäß des ersten Abschnitts 6.1 versehen, wobei die in Figur 6 gezeigte Dosierwalze 6 vollständig mit dem Profil gemäß des zweiten Abschnitts 6.2 versehen ist. Die in Figur 7 gezeigte Dosierwalze 6 ist mit dem Profil gemäß dem dritten Abschnitt 6.3 versehen.The FIGS. 5 to 7 show the metering roller 6 in various alternative embodiments in a respective perspective view. Here is the in FIG. 5 shown metering roller 6 is completely provided with the profile according to the first section 6.1, wherein the in FIG. 6 shown metering roller 6 is completely provided with the profile according to the second section 6.2. In the FIG. 7 shown metering roller 6 is provided with the profile according to the third section 6.3.

Im Rahmen der Anmeldung ist die Ausführung der Profile der Abschnitte 6.1 bis 6.3 nur beispielhaft dargestellt. Alternativ können die Profile auch andere geeignete Formen, z. B. dreieckförmige oder rechteckförmige Einschnitte, aufweisen.In the context of the application, the execution of the profiles of sections 6.1 to 6.3 is shown only by way of example. Alternatively, the profiles also other suitable forms, eg. B. triangular or rectangular incisions, have.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Fahrbahnfertigerroad pavers
1.11.1
Verteilerschneckeauger
1.21.2
Einbaubohlescreed
1.2.11.2.1
TragarmBeam
1.31.3
weiterer Tragarmanother support arm
1.41.4
erster Rollkörperfirst rolling body
1.51.5
zweiter Rollkörpersecond rolling body
1.61.6
Behältercontainer
1.71.7
weitere Rollkörpermore rolling bodies
1.81.8
Umlenkeinrichtungdeflecting
22
Fahrbahndeckepavement
2.12.1
Deckschichttopcoat
2.22.2
Abstreumaterialgritting
33
Fahrbahnoberbauroadway superstructure
3.13.1
Trägerschichtbacking
44
Trägermaterialsupport material
4.14.1
Zwischeneinlageinterlining
55
Walzeroller
66
Dosierwalzemetering
6.16.1
erster Abschnittfirst section
6.26.2
zweiter Abschnittsecond part
6.36.3
dritter Abschnittthird section
RR
Einbaurichtunginstallation direction

Claims (8)

  1. Method for producing a road surface (2), in which a wearing course (2.1), in particular composed of asphalt, is applied at a predetermined temperature to a bearing course (3.1) of a road superstructure (3) by means of a road paver (1), levelled off and provided with a scattering material (2.2) consisting of a multiplicity of grit particles, characterized in that the grit particles are bound into a carrier material (4) formed as a band-like flat material and are applied together with the carrier material (4) to the wearing course (2.1).
  2. Method according to Claim 1,
    characterized in that the carrier material (4) applied to the wearing course (2.1) and the grit particles bound into the carrier material (4) are rolled into the wearing course (2.1) by means of a forming device (5).
  3. Method according to Claim 1 or 2,
    characterized in that the grit particles are distributed in metered fashion on the carrier material (4) through an outlet opening of a container (1.6) arranged in and/or on the road paver (1) and fixed on said carrier material (4) while the latter is unwound from a first rolling body (1.4) arranged in and/or on the road paver (1).
  4. Method according to one of the preceding claims,
    characterized in that the grit particles are or become bound into the carrier material (4) in such a way that they each project by their pointed end through the carrier material (4) in the direction of a surface of the carrier material (4) that faces the wearing course (2.1) when applying the carrier material (4) equipped with the grit particles to said wearing course.
  5. Carrier material (4) by means of which a scattering material (2.2) can be applied to a wearing course (2.1) of a road surface (2), wherein the carrier material (4) is formed as a band-liked flat material and wherein grit particles forming the scattering material (2.2) are each arranged and fixed in material openings of the carrier material (4).
  6. Carrier material (4) according to Claim 5,
    characterized in that the carrier material (4) fuses under the effect of a temperature, in particular starting from a certain value of the temperature.
  7. Carrier material (4) according to Claim 5 or 6,
    characterized by a formation as a net- or gauze-like textile woven fabric.
  8. Carrier material (4) according to Claim 5 or 6,
    characterized by a formation as a plastic sheet.
EP14167952.2A 2014-05-12 2014-05-12 Method for the preparation of a road surface Active EP2944722B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14167952.2A EP2944722B1 (en) 2014-05-12 2014-05-12 Method for the preparation of a road surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14167952.2A EP2944722B1 (en) 2014-05-12 2014-05-12 Method for the preparation of a road surface

Publications (2)

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EP2944722A1 EP2944722A1 (en) 2015-11-18
EP2944722B1 true EP2944722B1 (en) 2016-10-12

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7104724B2 (en) * 2000-07-14 2006-09-12 Highway Preservation System, Ltd. Apparatus for treating a pavement surface
DE10149363A1 (en) 2001-10-06 2003-04-17 Hermann Kirchner Gmbh & Co Kg Method and device for introducing grit into an asphalt layer
DE102012207143A1 (en) * 2012-04-27 2013-10-31 Ibrahim Bogocli Device for applying a marking film to a roadway

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