EP0956392B2 - Use of a textile lattice for reeinforcing bitumen-bonded asphalts layers - Google Patents

Use of a textile lattice for reeinforcing bitumen-bonded asphalts layers Download PDF

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Publication number
EP0956392B2
EP0956392B2 EP97954723A EP97954723A EP0956392B2 EP 0956392 B2 EP0956392 B2 EP 0956392B2 EP 97954723 A EP97954723 A EP 97954723A EP 97954723 A EP97954723 A EP 97954723A EP 0956392 B2 EP0956392 B2 EP 0956392B2
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EP
European Patent Office
Prior art keywords
threads
fleece
lattice
use according
bitumen
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.)
Expired - Lifetime
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EP97954723A
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German (de)
French (fr)
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EP0956392B1 (en
EP0956392A1 (en
Inventor
Jürgen Kassner
Heiko Pintz
Ulrich Von Fransecky
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Huesker Synthetic GmbH and Co
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Huesker Synthetic GmbH and Co
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Application filed by Huesker Synthetic GmbH and Co filed Critical Huesker Synthetic GmbH and Co
Priority to EP03005795A priority Critical patent/EP1318240A3/en
Priority to EP01121592A priority patent/EP1158098B9/en
Publication of EP0956392A1 publication Critical patent/EP0956392A1/en
Application granted granted Critical
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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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
    • D04B21/165—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads with yarns stitched through one or more layers or tows, e.g. stitch-bonded fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
    • D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24033—Structurally defined web or sheet [e.g., overall dimension, etc.] including stitching and discrete fastener[s], coating or bond
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/133—Inorganic fiber-containing scrim
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/159—Including a nonwoven fabric which is not a scrim
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/172—Coated or impregnated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/172—Coated or impregnated
    • Y10T442/181—Bitumen coating or impregnation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/102—Woven scrim
    • Y10T442/183—Synthetic polymeric fiber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/184—Nonwoven scrim
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/184—Nonwoven scrim
    • Y10T442/191—Inorganic fiber-containing scrim
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/184—Nonwoven scrim
    • Y10T442/197—Including a nonwoven fabric which is not a scrim
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
    • Y10T442/184—Nonwoven scrim
    • Y10T442/198—Coated or impregnated

Definitions

  • the invention relates to the use of a wide mesh textile grid according to the preamble of claim 1.
  • the grid can be woven or rustling, but it can also be the load-bearing parallel, transverse to the longitudinal direction threads on the load-bearing parallel Longitudinal threads should be laid on and at the intersections by gluing or welding be connected to the longitudinal threads.
  • a grid of this type connected to a nonwoven fabric is known from the document EP 0 413 295 A.
  • the geotextile known from this document for the reinforcement of asphalt layers is a two-component composite, one component of which is a nonwoven and the second component is a fabric, Knitted fabric, Garngelege, Grid or other fabric defined Garnlage is.
  • the composite material is designed as Raschelware, in which the two components are integrated into each other by Schußlegerascheltechnik.
  • the nonwoven fabric should have a good Bitumensaugschreib, so that when laying the geotextile this nonwoven is bitumen impregnated and acts as a water barrier. Furthermore, the nonwoven fabric should prevent cracking and crack propagation in the asphalt layers.
  • the basis weight of the nonwoven fabric should be 50 to 300 g / m 2 , preferably 100 to 180 g / m 2 .
  • This geotextile forms a release layer when installed.
  • an amount of adhesive to be determined as a function of the pore content should be applied during installation.
  • Adhesive e.g. a bitumen latex emulsion
  • the mesh size should be matched on the largest grain diameter of the mixture used.
  • the mesh size is 2 to 2.5 times larger than the largest diameter.
  • the longitudinal and transverse load-bearing threads should have a breaking strength of 10 to 100 kN / m. If necessary or desired, You can also use stronger threads for the reinforcing grid become.
  • the grid has a semi-rigid consistency by coating with the adhesive.
  • the example, 5 m wide and 50 m long grid is from a roll to a Pressure-sensitive adhesive or bitumen emulsion evenly sprayed surface unrolled.
  • the Arm michsgitter should lie flat and wrinkle-free, before further mix on the Arm réellesgitter is applied.
  • this known grid there is the difficulty that the unrolled reinforcing grid slips and wrinkles in particular throws then when vehicles drive over the routed grid.
  • the invention is based on the object, the use of a reinforcing grid for bitumen-bound asphalt layers, which does not have a separating layer forms between the layers of the road surface and that better than the known ones Grid on a prepared plane sticks.
  • a modified embodiment can be applied to an impregnation or coating be dispensed with a Bitumenaffinen adhesive the grid, if the load-bearing threads consist of a polymer or a polycondensate, which itself causes good adhesion with bitumen.
  • the composite of textile mesh and thin fleece can be provided on the underside with a Bitumenhaftkleber.
  • This pressure-sensitive adhesive melts when the hot asphalt mixture required for forming the bitumen top layer is applied to the laid grid mat.
  • the bituminous adhesive is applied only at certain points or in strips parallel to the winding axis.
  • the amount of bituminous adhesive to be sprayed onto the subgrade is greatly reduced by the composite bitumen adhesive and may also be completely eliminated if necessary.
  • the installation of the grid is simplified and the installation time for the reinforcement is shortened.
  • the amount of pressure-sensitive adhesive applied depends on the condition of the road surface or asphalt surface to be repaired. It is preferably 150 g to 500 g / m 2 .
  • the apparent from Figs. 1 to 3 textile grid for reinforcing bitumen bound Layers consists essentially of two sets of parallel load-bearing threads 1 and 2.
  • the threads 1 of the grid run in the warp direction or in the longitudinal direction of the Grid, while the threads 2 are transverse to it.
  • the load-absorbing threads consist of high modulus polymer fibers or polycondensate fibers, for example Aramid or polyvinyl alcohol fibers, in particular in the form of continuous filaments. But these load-bearing threads can also consist of glass fibers.
  • the transverse Filaments 2 disposed between the web 3 and the longitudinal threads 1. This arrangement is somewhat more stable than the arrangement of the transverse threads 2 over the longitudinal threads 1.
  • the load-absorbing threads 1 and 2 can impregnated with an adhesive even before it starts to rust on the fleece 3 or coated. Appropriately, but these load-bearing Threads 1 and 2 coated with the nonwoven 3 with the adhesive 6. So the Consumption of adhesives, especially a bitumen latex emulsion, not too large is, it is applied so thin that the fleece 3 remains permeable to air.
  • the nonwoven fabric 3 is perforated.
  • the web 3 are in regular distribution holes 4 punched with a diameter of 0.5 to 4 mm.
  • the proportion of holes in the total area of the web is at least 10%.
  • the web 3 which consists of PET, PE or PP fibers, threads and / or filaments and is thermally, chemically or mechanically solidified, has a weight of 10 to 50 g / m 2 .
  • the fixation of the grid by the Raschelfäden 5 is generally sufficient.
  • the load-absorbing threads but also at their crossing points be additionally bonded together by gluing or welding.
  • the load-absorbing threads 1 and 2 are not flat but round and have a diameter of 2 to 4 mm.
  • Bituminous pressure-sensitive adhesive in the form of points not shown or in parallel is applied to the winding axis extending strip, so that the flexibility of the Composites of lattice 1, 2, fleece 3, bitumen-affine coating 6 and fusible Pressure-sensitive adhesive is retained.

Abstract

A textile lattice with wide meshing is for use to reinforce bitumen-bound layers, road coverings in particular. Intersecting threads (1,2) consisting of glass fibre or man-made fibres are applied on a thin nonwoven (3) by Raschel knitting. The connecting Raschel threads (5) encase the longitudinally running threads (1) of the lattice and fix the transverse threads (2). The nonwoven (3) consists of polyethylene terephthalate, polyethylene or polypropylene fibres, yarns and/or filaments.

Description

Die Erfindung bezieht sich auf die Verwendung eines weitmaschigen textilen Gitters gemäß dem Oberbegriff des Anspruchs 1.The invention relates to the use of a wide mesh textile grid according to the preamble of claim 1.

Das Gitter kann gewebt oder geraschelt sein, es können aber auch die lasttragenden parallelen, quer zur Längsrichtung verlaufenden Fäden auf die lasttragenden parallelen Längsfäden aufgelegt sein und an den Kreuzungsstellen durch Klebung oder Schweißung mit den Längsfäden verbunden sein.The grid can be woven or rustling, but it can also be the load-bearing parallel, transverse to the longitudinal direction threads on the load-bearing parallel Longitudinal threads should be laid on and at the intersections by gluing or welding be connected to the longitudinal threads.

Ein mit einem Vliesstoff verbundenes Gitter dieser Art ist bekannt aus der Druckschrift EP 0 413 295 A. Das aus dieser Schrift bekannte Geotextil für die Bewehrung von Asphaltschichten ist ein aus zwei Komponenten bestehender Verbundstoff, dessen eine Komponente ein Vliesstoff und dessen zweite Komponente ein Gewebe, Gewirke, Fadengelege, Grid oder anderes Flächengebilde definierter Garnlage ist. Der Verbundstoff ist als Raschelware ausgebildet, bei der die beiden Komponenten durch Schußlegerascheltechnik ineinander integriert sind. Der Vliesstoff soll eine gute Bitumensaugfähigkeit aufweisen, so daß beim Verlegen des Geotextils dieser Vliesstoff bitumenimprägniert wird und als Wassersperre wirkt. Ferner soll der Vliesstoff die Rißbildung und die Rißfortpflanzung in den Asphaltschichten verhindern. Das Flächengewicht des Vliesstoffs soll 50 bis 300 g/m2, vorzugsweise 100 bis 180 g/m2 betragen. Dieses Geotextil bildet im eingebauten Zustand eine Trennschicht. Zur Erhöhung des Verbundes zwischen dem Geotextil und dem Asphalt soll beim Verlegen eine in Abhängigkeit von dem Porengehalt zu ermittelnde Haftmittelmenge aufgebracht werden.A grid of this type connected to a nonwoven fabric is known from the document EP 0 413 295 A. The geotextile known from this document for the reinforcement of asphalt layers is a two-component composite, one component of which is a nonwoven and the second component is a fabric, Knitted fabric, Garngelege, Grid or other fabric defined Garnlage is. The composite material is designed as Raschelware, in which the two components are integrated into each other by Schußlegerascheltechnik. The nonwoven fabric should have a good Bitumensaugfähigkeit, so that when laying the geotextile this nonwoven is bitumen impregnated and acts as a water barrier. Furthermore, the nonwoven fabric should prevent cracking and crack propagation in the asphalt layers. The basis weight of the nonwoven fabric should be 50 to 300 g / m 2 , preferably 100 to 180 g / m 2 . This geotextile forms a release layer when installed. To increase the bond between the geotextile and the asphalt, an amount of adhesive to be determined as a function of the pore content should be applied during installation.

Aus der DE 20 00 937 ist ein weitmaschiges textiles Gitter zum Bewehren von Straßendecken bekannt, das vorgefertigt mit einem bestimmten bitumenaffinen Haftmittel, z.B. einer Bitumen-Latex-Emulsion, beschichtet ist, um eine gute Haftung zwischen dem Gitter und den bitumengebundenen Schichten herzustellen. Um eine gute Verbindung der zu beiden Seiten des Bewehrungsgitters befindlichen Schichten der Straßendecke herzustellen, ist es vorteilhaft, das Gitter weitmaschig auszuführen, so daß der Abstand zwischen den parallel in Längsrichtung und in Querrichtung verlaufenden Fäden 20 bis 100 mm beträgt. Die Maschenweite sollte abgestimmt sein auf den größten Korndurchmesser des zur Anwendung gelangenden Mischgutes. Vorteilhafterweise ist die Maschenweite 2 bis 2,5 mal größer als der Größtkomdurchmesser. Die in Längs- und Querrichtung verlaufenden lastaufnehmenden Fäden sollten eine Bruchfestigkeit haben von 10 bis 100 kN/m. Falls erforderlich oder erwünscht, können auch noch stärkere Fäden für das Armierungsgitter genommen werden.From DE 20 00 937 a wide mesh textile grid for reinforcing Road surfaces known, prefabricated with a particular bitumen affine Adhesive, e.g. a bitumen latex emulsion, is coated to ensure good adhesion between the grid and the bituminous layers. To one good connection of the layers located on both sides of the reinforcing grid the road surface, it is advantageous to carry out the grid wide-meshed, so that the distance between the parallel in the longitudinal direction and in the transverse direction extending threads 20 to 100 mm. The mesh size should be matched on the largest grain diameter of the mixture used. Advantageously, the mesh size is 2 to 2.5 times larger than the largest diameter. The longitudinal and transverse load-bearing threads should have a breaking strength of 10 to 100 kN / m. If necessary or desired, You can also use stronger threads for the reinforcing grid become.

Das Gitter hat durch die Beschichtung mit dem Haftmittel eine halbsteife Konsistenz. Das beispielsweise 5 m breite und 50 m lange Gitter wird von einer Rolle auf eine mit Haftkleber oder Bitumen-Emulsion gleichmäßig angesprühte Fläche abgerollt. Das Armierungsgitter soll plan und faltenfrei aufliegen, bevor weiteres Mischgut auf das Armierungsgitter aufgebracht wird. Bei diesem bekannten Gitter besteht die Schwierigkeit, daß das abgerollte Armierungsgitter verrutscht und Falten wirft insbesondere dann, wenn Fahrzeuge über das verlegte Gitter fahren.The grid has a semi-rigid consistency by coating with the adhesive. The example, 5 m wide and 50 m long grid is from a roll to a Pressure-sensitive adhesive or bitumen emulsion evenly sprayed surface unrolled. The Armierungsgitter should lie flat and wrinkle-free, before further mix on the Armierungsgitter is applied. In this known grid, there is the difficulty that the unrolled reinforcing grid slips and wrinkles in particular throws then when vehicles drive over the routed grid.

Der Erfindung liegt die Aufgabe zugrunde, die Verwendung eines Armierungsgitters für bitumengebundene Asphaltschichten vorzuschlagen, das keine Trennschicht zwischen den Schichten der Straßendecke bildet und das besser als die bekannten Gitter auf einem vorbereiteten Planum haftet.The invention is based on the object, the use of a reinforcing grid for bitumen-bound asphalt layers, which does not have a separating layer forms between the layers of the road surface and that better than the known ones Grid on a prepared plane sticks.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.

Dadurch, daß die Maschen des Gitters durch ein dünnes Vlies ausgefüllt sind, wird eine erheblich stärkere Haftung des verlegten Gitters auf dem Planum erreicht. Andererseits ist das Vlies so dünn und deshalb auch so nachgiebig, daß das Vlies nicht als Trennschicht zwischen der unter dem Gitter und der über dem Gitter befindlichen Asphaltschicht wirkt. Trotz des Vlieses wird eine gute Verzahnung der groben Körner des auf das Gitter aufgebrachten Asphalt-Mischguts mit den groben Körnern des unter dem Gitter befindlichen Mischguts erreicht.The fact that the meshes of the grid are filled by a thin fleece is achieved a much stronger adhesion of the laid grid on the planum. On the other hand, the fleece is so thin and therefore so yielding that the fleece not as a separating layer between under the grid and above the grid Asphalt layer works. Despite the fleece is a good toothing of coarse grains of the asphalt mix applied to the grid with the coarse grains of the under reached the lattice mixture.

Dadurch, daß die in Kettrichtung verlaufenden lasttragenden Fäden des Gitters von den verbindenden Raschel-Bindefäden umraschelt werden, werden gleichzeitig die rechtwinklig dazu verlaufenden lasttragenden Fäden in ihren Abständen zueinander fixiert. Characterized in that extending in the warp direction load-bearing threads of the grid of the Raschel binding threads are rooted at the same time are the at right angles to extending load-bearing threads in their distances from each other fixed.

Bei einer abgewandelten Ausführungsform kann auf eine Imprägnierung oder Beschichtung des Gitters mit einem bitumenaffinen Haftmittel verzichtet werden, wenn die lasttragenden Fäden aus einem Polymerisat oder einem Polykondensat bestehen, das selbst eine gute Haftung mit Bitumen bewirkt.In a modified embodiment can be applied to an impregnation or coating be dispensed with a Bitumenaffinen adhesive the grid, if the load-bearing threads consist of a polymer or a polycondensate, which itself causes good adhesion with bitumen.

Weiterhin kann das Komposit aus textilem Gitter und dünnem Vlies an der Unterseite mit einem Bitumenhaftkleber versehen sein. Dieser Haftkleber schmilzt, wenn auf die verlegte Gittermatte das zur Bildung der Bitumen-Deckschicht erforderliche heiße Asphalt-Mischgut aufgebracht wird. Zum Erhalt der Flexibilität des Bewehrungsgitters ist es vorteilhaft, wenn der Bitumenhaftkleber nur punktuell oder in Streifen parallel zur Wickelachse aufgetragen ist. Die Menge der auf das Planum aufzusprühenden Bitumenemulsion ist durch den am Komposit befindlichen Bitumenhaftkleber stark reduziert und kann gegebenenfalls auch völlig entfallen. Der Einbau des Gitters ist vereinfacht und die Einbauzeit für die Bewehrung ist verkürzt. Die Menge des aufzubringenden Haftklebers ist abhängig vom Zustand der zu erneuernden Straßendecke oder Asphaltdecke. Sie beträgt vorzugsweise 150 g bis 500 g/m2.Furthermore, the composite of textile mesh and thin fleece can be provided on the underside with a Bitumenhaftkleber. This pressure-sensitive adhesive melts when the hot asphalt mixture required for forming the bitumen top layer is applied to the laid grid mat. To maintain the flexibility of the reinforcing grid, it is advantageous if the bituminous adhesive is applied only at certain points or in strips parallel to the winding axis. The amount of bituminous adhesive to be sprayed onto the subgrade is greatly reduced by the composite bitumen adhesive and may also be completely eliminated if necessary. The installation of the grid is simplified and the installation time for the reinforcement is shortened. The amount of pressure-sensitive adhesive applied depends on the condition of the road surface or asphalt surface to be repaired. It is preferably 150 g to 500 g / m 2 .

Weitere Merkmale der Erfindung ergeben sich aus den Patentansprüchen 2 bis 11.Further features of the invention will become apparent from the claims 2 to 11.

In der folgenden Beschreibung wird ein in den Zeichnungen dargestelltes Ausführungsbeispiel der Erfindung näher erläutert. Die Zeichnungen zeigen in:

  • Fig. 1 eine Draufsicht auf ein Armierungsgitter zur Verwendung gemäß der Erfindung,
  • Fig. 2 eine schaubildliche Ansicht eines Kreuzungspunktes des Armierungsgitters und
  • Fig. 3 ein mit Haftmittel überzogenes Armierungsgitter entsprechend Fig. 1.
    • In the following description, an illustrated in the drawings embodiment of the invention will be explained in more detail. The drawings show in:
  • 1 is a plan view of a reinforcing grid for use according to the invention,
  • Fig. 2 is a perspective view of a crossing point of the reinforcing grid and
  • 3 shows an adhesive-coated reinforcing grid according to FIG. 1.

    • Das aus den Fig. 1 bis 3 ersichtliche textile Gitter zum Bewehren bitumengebundener Schichten besteht im wesentlichen aus zwei Sätzen paralleler lastaufnehmender Fäden 1 und 2. Die Fäden 1 des Gitters verlaufen in Kettrichtung bzw. in Längsrichtung des Gitters, während die Fäden 2 quer dazu verlaufen. Die lastaufnehmenden Fäden bestehen aus hochmodulen Polymerisatfasern oder Polykondensatfasern, zum Beispiel Fasern aus Aramid oder Polyvenylalkohol, insbesondere in Form von Endlosfilamenten. Diese lasttragenden Fäden können aber auch aus Glasfasern bestehen. Die längs verlaufenden Fäden 1, die bei dem dargestellten Ausführungsbeispiel sich aus je zwei Faserbündeln zusammensetzen, sind von Raschel-Bindefäden 5 umgeben, welche die längs verlaufenden Fäden 1 und auch die quer verlaufenden Fäden 2 mit einem dünnen Vlies 3 verbinden. Wie insbesondere die Fig. 2 zeigt, sind die quer verlaufenden Fäden 2 zwischen dem Vlies 3 und den längs verlaufenden Fäden 1 angeordnet. Diese Anordnung ist etwas stabiler als die Anordnung der quer verlaufenden Fäden 2 über den längs verlaufenden Fäden 1. Die lastaufnehmenden Fäden 1 und 2 können auch schon vor dem Aufrascheln auf das Vlies 3 mit einem Haftmittel imprägniert bzw. beschichtet sein. Zweckmäßigerweise aber werden diese lastaufnehmenden Fäden 1 und 2 zusammen mit dem Vlies 3 mit dem Haftmittel 6 überzogen. Damit der Verbrauch an Haftmitteln, insbesondere einer Bitumen-Latex-Emulsion, nicht zu groß ist, wird diese so dünn aufgetragen, daß das Vlies 3 luftdurchlässig bleibt.The apparent from Figs. 1 to 3 textile grid for reinforcing bitumen bound Layers consists essentially of two sets of parallel load-bearing threads 1 and 2. The threads 1 of the grid run in the warp direction or in the longitudinal direction of the Grid, while the threads 2 are transverse to it. The load-absorbing threads consist of high modulus polymer fibers or polycondensate fibers, for example Aramid or polyvinyl alcohol fibers, in particular in the form of continuous filaments. But these load-bearing threads can also consist of glass fibers. The longitudinally extending threads 1, which in the illustrated embodiment of each two fiber bundles are composed, are surrounded by Raschel binding threads 5, which the longitudinal threads 1 and also the transverse threads 2 with a thin fleece 3 connect. As particularly shown in FIG. 2, the transverse Filaments 2 disposed between the web 3 and the longitudinal threads 1. This arrangement is somewhat more stable than the arrangement of the transverse threads 2 over the longitudinal threads 1. The load-absorbing threads 1 and 2 can impregnated with an adhesive even before it starts to rust on the fleece 3 or coated. Appropriately, but these load-bearing Threads 1 and 2 coated with the nonwoven 3 with the adhesive 6. So the Consumption of adhesives, especially a bitumen latex emulsion, not too large is, it is applied so thin that the fleece 3 remains permeable to air.

    Wie insbesondere die Fig. 1 und 2 zeigen, ist das Vlies 3 perforiert. In das Vlies 3 sind in regelmäßiger Verteilung Löcher 4 eingestanzt mit einem Durchmesser von 0,5 bis 4 mm. Der Anteil der Löcher an der Gesamtfläche des Vlieses beträgt mindestens 10%.As shown particularly in FIGS. 1 and 2, the nonwoven fabric 3 is perforated. In the web 3 are in regular distribution holes 4 punched with a diameter of 0.5 to 4 mm. The proportion of holes in the total area of the web is at least 10%.

    Das Vlies 3, welches aus PET-, PE- oder PP-Fasern, -Fäden und/oder -Filamenten besteht und thermisch, chemisch oder mechanisch verfestigt ist, hat ein Gewicht von 10 bis 50 g/m2.The web 3, which consists of PET, PE or PP fibers, threads and / or filaments and is thermally, chemically or mechanically solidified, has a weight of 10 to 50 g / m 2 .

    Die Fixierung des Gitters durch die Raschelfäden 5 ist im allgemeinen ausreichend. In besonderen Fällen können die lastaufnehmenden Fäden aber auch an ihren Kreuzungspunkten durch Klebung oder Schweißung zusätzlich miteinander verbunden sein.The fixation of the grid by the Raschelfäden 5 is generally sufficient. In special cases, the load-absorbing threads but also at their crossing points be additionally bonded together by gluing or welding.

    Um einen guten Verbund der Schichten einer Asphaltdecke zu erreichen, ist es vorteilhaft, wenn die lastaufnehmenden Fäden 1 und 2 nicht flach, sondern rund sind und einen Durchmesser von 2 bis 4 mm haben. To achieve a good bond of the layers of an asphalt surface, it is advantageous if the load-absorbing threads 1 and 2 are not flat but round and have a diameter of 2 to 4 mm.

    Auf der Unterseite des Bewehrungsgitters befindet sich ein bei über 60°C schmelzbarer bituminöser Haftkleber, der in Form von nicht dargestellten Punkten oder parallel zur Wickelachse verlaufenden Streifen aufgebracht ist, damit die Flexibilität des Komposits aus Gitter 1, 2, Vlies 3, bitumenaffiner Beschichtung 6 und schmelzbarem Haftkleber erhalten bleibt.On the underside of the reinforcing grid is a fusible at over 60 ° C. Bituminous pressure-sensitive adhesive, in the form of points not shown or in parallel is applied to the winding axis extending strip, so that the flexibility of the Composites of lattice 1, 2, fleece 3, bitumen-affine coating 6 and fusible Pressure-sensitive adhesive is retained.

    Bezugszeichenreference numeral

    11
    lastaufnehmende, in Längsrichtung des Gitters verlaufende Fädenload-absorbing, running in the longitudinal direction of the grid threads
    22
    lastaufnehmende, in Querrichtung verlaufende Fäden des Gittersload-bearing transverse threads of the grid
    33
    Vliesfleece
    44
    Perforierungperforation
    55
    Raschel-BindefädenRaschel binding threads
    66
    Haftmitteladhesives
    77
    Kreuzungspunktintersection

    Claims (11)

    1. Use of a wide-meshed, textile lattice to provide reinforcement for bitumen-bonded asphalt layers, in particular for road surfacings, which essentially consists of two sets of parallel, load-bearing threads (1 and 2)
      wherein one set of threads (1) extends in the longitudinal direction of the lattice and the other set of threads (2) extends transversely to the longitudinal direction of the lattice and the threads (1 and 2) are of glass fibres or chemical fibres such as polymer fibres or polycondensate fibres,
      wherein the lattice is coated with a bonding substance (6) having an affinity to bitumen or the crossing threads (1 and 2) of the lattice are made from a material with an affinity for bitumen, in particular a bitumen bonding substance,
      wherein the crossing threads (1, 2) are raschel-locked onto a thin fleece (3), which preferably has a weight of 10 to 100 g/m2,
      characterised in that the fleece (3) is treated and coated with the bonding substance (6) having an affinity to bitumen, wherein the fleece (3) has openings in the coating of bonding substance in order to obtain a permeability to air and the fleece is so thin and consequently so flexible that it does not act as a separating layer between the asphalt layers underneath the lattice and above the lattice and that in spite of the fleece, a firm keying action between the coarse grains of the surfacing mixture laid on top of the lattice and the coarse grains of the mixture underneath the lattice is achieved.
    2. Use according to claim 1, characterised in that the connecting raschel-locking threads (5) surround the longitudinally extending threads (1) and secure the transversely extending threads (2).
    3. Use according to claim 1 or 2, characterised in that the fleece (3) has a weight of less than 50 g/m2.
    4. Use according to one of claims 1 to 3, characterised in that the transversely extending threads (2) are arranged between the fleece (3) and the longitudinally extending threads (1).
    5. Use according to one of claims 1 to 4, characterised in that the fleece (3) is made from polyethylene terephtalate (PET), polyethylene (PE) or polypropylene (PP) fibres, threads and/or filaments and is consolidated by heat, chemical or mechanical processing.
    6. Use according to one of claims 1 to 5, characterised in that the fleece (3) is perforated.
    7. Use according to claim 6, characterised in that holes (4) of a diameter of from 0.5 to 4 mm are punched in the fleece (3) in a regularly distributed pattern and the proportion of holes in relation to the total surface area is at least 10%.
    8. Use according one of claims 1 to 7, characterised in that the load-bearing threads (1 and 2) are joined to one another at their cross-over points (7) by bonding or welding.
    9. Use according to one of claims 1 to 8, characterised in that the load-bearing threads (1 and 2) are raschel-locked onto the fleece (3) in the form of rounded 2 to 4 mm diameter strands or double strands.
    10. Use according to one of claims 1 to 9, characterised in that the underside of the composite, especially of the fleece (3), is provided with a bituminous mastic which can be activated by heating.
    11. Use according to claim 10, characterised in that the bituminous mastic is deposited in form of spots or stripes extending transversely or orthogonal to the longitudinal direction of the lattice.
    EP97954723A 1996-12-17 1997-12-05 Use of a textile lattice for reeinforcing bitumen-bonded asphalts layers Expired - Lifetime EP0956392B2 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    EP03005795A EP1318240A3 (en) 1996-12-17 1997-12-05 Textile mesh for reinforcing bituminous layers
    EP01121592A EP1158098B9 (en) 1996-12-17 1997-12-05 Textile mesh for reinforcing bituminous layers

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE1965258 1996-12-17
    DE19652584A DE19652584A1 (en) 1996-12-17 1996-12-17 Textile grid for reinforcing bitumen-bound layers
    PCT/EP1997/006809 WO1998027282A1 (en) 1996-12-17 1997-12-05 Textile netting for reinforcing layers connected by bitumen

    Related Child Applications (2)

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    EP01121592A Division EP1158098B9 (en) 1996-12-17 1997-12-05 Textile mesh for reinforcing bituminous layers
    EP01121592.8 Division-Into 2001-09-11

    Publications (3)

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    EP0956392A1 EP0956392A1 (en) 1999-11-17
    EP0956392B1 EP0956392B1 (en) 2002-03-20
    EP0956392B2 true EP0956392B2 (en) 2005-12-07

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    EP97954723A Expired - Lifetime EP0956392B2 (en) 1996-12-17 1997-12-05 Use of a textile lattice for reeinforcing bitumen-bonded asphalts layers
    EP03005795A Withdrawn EP1318240A3 (en) 1996-12-17 1997-12-05 Textile mesh for reinforcing bituminous layers
    EP01121592A Expired - Lifetime EP1158098B9 (en) 1996-12-17 1997-12-05 Textile mesh for reinforcing bituminous layers

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    EP01121592A Expired - Lifetime EP1158098B9 (en) 1996-12-17 1997-12-05 Textile mesh for reinforcing bituminous layers

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    EP (3) EP0956392B2 (en)
    JP (1) JP3452939B2 (en)
    AT (2) ATE247193T1 (en)
    AU (1) AU724371B2 (en)
    CA (1) CA2274798C (en)
    CZ (1) CZ296530B6 (en)
    DE (3) DE19652584A1 (en)
    ES (2) ES2204794T5 (en)
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    NO (1) NO315571B1 (en)
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    NO992840D0 (en) 1999-06-11
    US20030017771A1 (en) 2003-01-23
    PL191788B1 (en) 2006-07-31
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    US6503853B1 (en) 2003-01-07
    TW483961B (en) 2002-04-21
    ES2204794T3 (en) 2004-05-01
    JP3452939B2 (en) 2003-10-06
    EP1158098A1 (en) 2001-11-28
    AU5983698A (en) 1998-07-15
    DE19652584A1 (en) 1998-06-18
    PL333948A1 (en) 2000-01-31
    DE59706710D1 (en) 2002-04-25
    ES2172832T5 (en) 2006-05-16
    WO1998027282A1 (en) 1998-06-25
    EP1318240A3 (en) 2003-08-13
    EP1158098B2 (en) 2009-10-28
    ATE247193T1 (en) 2003-08-15
    JP2001506330A (en) 2001-05-15
    CZ182899A3 (en) 1999-11-17
    ES2172832T3 (en) 2002-10-01
    EP0956392B1 (en) 2002-03-20
    CA2274798C (en) 2005-11-01
    MY119614A (en) 2005-06-30
    EP0956392A1 (en) 1999-11-17
    ATE214765T1 (en) 2002-04-15
    US6780798B2 (en) 2004-08-24
    EP1158098B9 (en) 2011-01-19
    ES2204794T5 (en) 2009-12-07
    NO992840L (en) 1999-07-08
    EP1158098B1 (en) 2003-08-13
    AU724371B2 (en) 2000-09-21
    CA2274798A1 (en) 1998-06-25
    NO315571B1 (en) 2003-09-22
    RU2166019C2 (en) 2001-04-27
    EP1318240A2 (en) 2003-06-11
    DE59710587D1 (en) 2003-09-18

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