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EP0956392B1 - Textile netting for reinforcing layers connected by bitumen - Google Patents

Textile netting for reinforcing layers connected by bitumen Download PDF

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Publication number
EP0956392B1
EP0956392B1 EP97954723A EP97954723A EP0956392B1 EP 0956392 B1 EP0956392 B1 EP 0956392B1 EP 97954723 A EP97954723 A EP 97954723A EP 97954723 A EP97954723 A EP 97954723A EP 0956392 B1 EP0956392 B1 EP 0956392B1
Authority
EP
European Patent Office
Prior art keywords
threads
lattice
fleece
bitumen
fibres
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
Application number
EP97954723A
Other languages
German (de)
French (fr)
Other versions
EP0956392A1 (en
EP0956392B2 (en
Inventor
Jürgen Kassner
Heiko Pintz
Ulrich Von Fransecky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huesker Synthetic GmbH and Co
Original Assignee
Huesker Synthetic GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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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
Publication of EP0956392B1 publication Critical patent/EP0956392B1/en
Application granted granted Critical
Publication of EP0956392B2 publication Critical patent/EP0956392B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 a wide-mesh textile grid according to the preamble of claim 1.
  • the grid can be woven or rustled, but it can also be the load bearing parallel, transverse to the longitudinal direction threads on the load-bearing parallel longitudinal threads must be placed and at the crossing points by gluing or welding with the longitudinal threads.
  • a grid of this type connected to a nonwoven is known from the publication EP 0 413 295 A.
  • the geotextile known from this publication for the reinforcement of asphalt layers is a composite consisting of two components, one component of which is a nonwoven and the second component of which is a fabric, Knitted fabric, laid scrim, grid or other flat structure of defined yarn layer is.
  • the composite material is designed as a Raschelware, in which the two components are integrated into one another by weft-laying technology.
  • the nonwoven should have good bitumen absorbency, so that when the geotextile is laid, this nonwoven is bitumen-impregnated and acts as a water barrier.
  • the nonwoven is also intended to prevent crack formation and crack propagation in the asphalt layers.
  • the weight per unit area of the nonwoven should be 50 to 300 g / m 2 , preferably 100 to 180 g / m 2 .
  • this geotextile forms a separating layer.
  • an amount of adhesive to be determined depending on the pore content should be applied when laying.
  • the grid Due to the coating with the adhesive, the grid has a semi-rigid consistency.
  • the grid for example 5 m wide and 50 m long, is moved from a roll to a roll Evenly sprayed surface with pressure sensitive adhesive or bitumen emulsion.
  • the reinforcement grid should lie flat and wrinkle-free before any further mix the reinforcement grid is applied. In this known grid there is Difficulty that the unrolled reinforcement grid slips and wrinkles especially when vehicles drive over the installed grille.
  • the invention has for its object a reinforcing grid for bitumen-bound Develop layers that have no interface between the layers Forms layers of the road surface and that better than the known grids on one prepared planum is liable.
  • the mesh of the grid is filled with a thin fleece achieved a considerably stronger adhesion of the laid grating on the formation.
  • the fleece is so thin and therefore so compliant that the fleece not as a separating layer between the one below the grid and the one above the grid located asphalt layer acts.
  • the toothing is good coarse grains of the asphalt mix applied to the grid with the coarse Grains of the mix located under the grid are reached.
  • impregnation can be used or coating the grid with a bitumen-affine adhesive if the load-bearing threads are made of a polymer or a polycondensate exist, which itself causes good adhesion with bitumen.
  • the composite of textile grid and thin fleece can be provided with a bitumen adhesive on the underside.
  • This pressure sensitive adhesive melts when the hot asphalt mix required to form the bitumen surface layer is applied to the laid mesh mat.
  • the bitumen adhesive is applied only selectively or in strips parallel to the winding axis.
  • the amount of bitumen emulsion to be sprayed onto the subgrade is greatly reduced by the bitumen adhesive on the composite and can even be omitted entirely.
  • the installation of the grid is simplified and the installation time for the reinforcement is reduced.
  • the amount of pressure sensitive adhesive to be applied depends on the condition of the road surface or asphalt surface to be renewed. It is preferably 150 g to 500 g / m 2 .
  • the textile lattice shown in FIGS. 1 to 3 for reinforcing bitumen-bound Layers essentially consist 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 run transversely to it.
  • the load-bearing threads consist of high-modulus polymer fibers or polycondensate fibers, for Example fibers made from aramid or polyvinyl alcohol; especially in the form of Continuous filaments.
  • these load-bearing threads can also consist of glass fibers.
  • the load-bearing Threads 1 and 2 can also be attached to the fleece 3 before they are sanded on be impregnated or coated with an adhesive. Conveniently, however these load-bearing threads 1 and 2 together with the fleece 3 with the Adhesive 6 coated. So that the consumption of adhesives, especially one Bitumen-latex emulsion, is not too large, this is applied so thin that the Fleece 3 remains breathable.
  • the fleece 3 is perforated.
  • holes 4 are punched with a diameter of 0.5 to 4 mm.
  • the proportion of the holes in the total area of the fleece is at least 10%.
  • the fleece 3 which consists of PET, PE or PP fibers, threads and / or filaments and is thermally, chemically or mechanically consolidated, has a weight of 10 to 50 g / m 2 .
  • the load-bearing threads 5 can also on their Crossing points additionally connected to each other by gluing or welding his.
  • the load-bearing threads 1 and 2 are not flat, but round and have a diameter of 2 to 4 mm.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Road Paving Structures (AREA)
  • Knitting Of Fabric (AREA)
  • Woven Fabrics (AREA)
  • Reinforced Plastic Materials (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)

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 ein weitmaschiges textiles Gitter gemäß dem Oberbegriff des Anspruchs 1.The invention relates to 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 rustled, but it can also be the load bearing parallel, transverse to the longitudinal direction threads on the load-bearing parallel longitudinal threads must be placed and at the crossing points by gluing or welding with 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 is known from the publication EP 0 413 295 A. The geotextile known from this publication for the reinforcement of asphalt layers is a composite consisting of two components, one component of which is a nonwoven and the second component of which is a fabric, Knitted fabric, laid scrim, grid or other flat structure of defined yarn layer is. The composite material is designed as a Raschelware, in which the two components are integrated into one another by weft-laying technology. The nonwoven should have good bitumen absorbency, so that when the geotextile is laid, this nonwoven is bitumen-impregnated and acts as a water barrier. The nonwoven is also intended to prevent crack formation and crack propagation in the asphalt layers. The weight per unit area of the nonwoven should be 50 to 300 g / m 2 , preferably 100 to 180 g / m 2 . When installed, this geotextile forms a separating layer. To increase the bond between the geotextile and the asphalt, an amount of adhesive to be determined depending on the pore content should be applied when laying.

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 Größtkorndurchmesser. 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.DE 20 00 937 describes a wide-meshed textile grid for reinforcing Road surfaces known to be prefabricated with a certain bitumen affinity Adhesives, e.g. a bitumen-latex emulsion, coated for good adhesion between the grid and the bituminous layers. To one good connection of the layers on both sides of the reinforcement grid of the road surface, it is advantageous to make the grid wide-meshed, so that the distance between the parallel in the longitudinal direction and in the transverse direction running threads is 20 to 100 mm. The mesh size should be coordinated to the largest grain diameter of the mix to be used. The mesh size is advantageously 2 to 2.5 times larger than the largest grain diameter. The load-absorbing threads running in the longitudinal and transverse directions should have a breaking strength of 10 to 100 kN / m. If necessary or desired, can also take stronger threads for the reinforcement 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.Due to the coating with the adhesive, the grid has a semi-rigid consistency. The grid, for example 5 m wide and 50 m long, is moved from a roll to a roll Evenly sprayed surface with pressure sensitive adhesive or bitumen emulsion. The reinforcement grid should lie flat and wrinkle-free before any further mix the reinforcement grid is applied. In this known grid there is Difficulty that the unrolled reinforcement grid slips and wrinkles especially when vehicles drive over the installed grille.

Der Erfindung liegt die Aufgabe zugrunde, ein Armierungsgitter für bitumengebundene Schichten zu entwickeln, das keine Trennschicht zwischen den Schichten der Straßendecke bildet und das besser als die bekannten Gitter auf einem vorbereiteten Planum haftet.The invention has for its object a reinforcing grid for bitumen-bound Develop layers that have no interface between the layers Forms layers of the road surface and that better than the known grids on one prepared planum is liable.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved according to the invention 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 mesh of the grid is filled with a thin fleece achieved a considerably stronger adhesion of the laid grating on the formation. On the other hand, the fleece is so thin and therefore so compliant that the fleece not as a separating layer between the one below the grid and the one above the grid located asphalt layer acts. Despite the fleece, the toothing is good coarse grains of the asphalt mix applied to the grid with the coarse Grains of the mix located under the grid are reached.

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 the load-bearing threads of the grid extending in the warp direction of the connecting Raschel twine are unraveled at the same time load-bearing threads running at right angles to each other in their spacing from one another fixed.

Bei einer abgewandelten Ausführungsform der Erfindung 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 of the invention, impregnation can be used or coating the grid with a bitumen-affine adhesive if the load-bearing threads are made of a polymer or a polycondensate exist, 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 grid and thin fleece can be provided with a bitumen adhesive on the underside. This pressure sensitive adhesive melts when the hot asphalt mix required to form the bitumen surface layer is applied to the laid mesh mat. In order to maintain the flexibility of the reinforcement mesh, it is advantageous if the bitumen adhesive is applied only selectively or in strips parallel to the winding axis. The amount of bitumen emulsion to be sprayed onto the subgrade is greatly reduced by the bitumen adhesive on the composite and can even be omitted entirely. The installation of the grid is simplified and the installation time for the reinforcement is reduced. The amount of pressure sensitive adhesive to be applied depends on the condition of the road surface or asphalt surface to be renewed. 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 emerge from patent 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 nach 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 embodiment of the invention shown in the drawings is explained in more detail. The drawings show in:
  • 1 is a plan view of a reinforcing mesh according to the invention,
  • Fig. 2 is a perspective view of an intersection of the reinforcement grid and
  • 3 shows a reinforcing mesh covered with adhesive in accordance with 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 textile lattice shown in FIGS. 1 to 3 for reinforcing bitumen-bound Layers essentially consist 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 run transversely to it. The load-bearing threads consist of high-modulus polymer fibers or polycondensate fibers, for Example fibers made from aramid or polyvinyl alcohol; especially in the form of Continuous filaments. However, these load-bearing threads can also consist of glass fibers. The longitudinal threads 1, which in the illustrated embodiment are composed of two fiber bundles, are 5 of Raschel binding threads surround which the longitudinal threads 1 and also the transverse threads Connect threads 2 with a thin fleece 3. As particularly shown in FIG. 2, are the transverse threads 2 between the fleece 3 and the longitudinal ones Threads 1 arranged. This arrangement is somewhat more stable than the arrangement of the transverse threads 2 over the longitudinal threads 1. The load-bearing Threads 1 and 2 can also be attached to the fleece 3 before they are sanded on be impregnated or coated with an adhesive. Conveniently, however these load-bearing threads 1 and 2 together with the fleece 3 with the Adhesive 6 coated. So that the consumption of adhesives, especially one Bitumen-latex emulsion, is not too large, this is applied so thin that the Fleece 3 remains breathable.

    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 in FIGS. 1 and 2 in particular, the fleece 3 is perforated. In the fleece 3 holes 4 are punched with a diameter of 0.5 to 4 mm. The proportion of the holes in the total area of the fleece 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 fleece 3, which consists of PET, PE or PP fibers, threads and / or filaments and is thermally, chemically or mechanically consolidated, 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.Fixation of the grid by the rustling threads 5 is generally sufficient. In special cases, the load-bearing threads can also on their Crossing points additionally connected to each other by gluing or welding his.

    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.In order to achieve a good bond between the layers of an asphalt surface, it is advantageous if the load-bearing 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 reinforcement grid there is a meltable one at over 60 ° C bituminous pressure sensitive adhesive in the form of dots not shown or in parallel is applied to the winding axis extending strip, so that the flexibility of the Composites of grid 1, 2, fleece 3, bitumen-affine coating 6 and meltable Pressure sensitive adhesive is retained.

    Bezugszeichenreference numeral

    11
    lastaufnehmende, in Längsrichtung des Gitters verlaufende Fädenload-bearing threads running in the longitudinal direction of the grid
    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. A wide-meshed, textile lattice to provide reinforcement for bitumen-bonded layers, in particular of a road surfacing, 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 having an affinity to bitumen or the crossing threads (1 and 2) 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 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 be permeable to air.
    2. A lattice as claimed in 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. A lattice as claimed in claim 1 or 2, characterised in that the fleece (3) has a weight of less than 50 g/ m2.
    4. A lattice as claimed in 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. A lattice as claimed in one of claims 1 to 4, characterised in that the fleece (3) is made from polyethylene terephtalate (PETP), polyethylene (PET) or polypropylene (PP) fibres, threads and/or filaments and is consolidated by heat, chemical or mechanical processing.
    6. A lattice as claimed in one of claims 1 to 5, characterised in that the fleece (3) is perforated.
    7. A lattice as claimed in claim 6, characterised in that holes 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. A lattice as claimed in 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. A lattice as claimed in one of claims 1 to 8, characterised in that the load-bearing threads (1 and 2) are in the form of rounded 2 to 4 mm diameter strands or double strands secured to the fleece (3) by raschel-locking.
    10. A lattice as claimed in one of claims 1 to 9, characterised in that a bituminous mastic which can be activated by heating is applied to the underside of the composite, especially of the fleece (3).
    11. A lattice as claimed in 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
    DE19652584A DE19652584A1 (en) 1996-12-17 1996-12-17 Textile grid for reinforcing bitumen-bound layers
    DE1965258 1996-12-17
    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 true EP0956392B1 (en) 2002-03-20
    EP0956392B2 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

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    EP (3) EP1158098B9 (en)
    JP (1) JP3452939B2 (en)
    AT (2) ATE214765T1 (en)
    AU (1) AU724371B2 (en)
    CA (1) CA2274798C (en)
    CZ (1) CZ296530B6 (en)
    DE (3) DE19652584A1 (en)
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    Publication number Publication date
    EP1158098B9 (en) 2011-01-19
    US6503853B1 (en) 2003-01-07
    PL333948A1 (en) 2000-01-31
    EP1158098B2 (en) 2009-10-28
    NO992840L (en) 1999-07-08
    NO992840D0 (en) 1999-06-11
    EP1318240A3 (en) 2003-08-13
    EP0956392A1 (en) 1999-11-17
    US6780798B2 (en) 2004-08-24
    ES2204794T5 (en) 2009-12-07
    DE59706710D1 (en) 2002-04-25
    AU724371B2 (en) 2000-09-21
    ES2172832T5 (en) 2006-05-16
    TW483961B (en) 2002-04-21
    CZ182899A3 (en) 1999-11-17
    EP1158098A1 (en) 2001-11-28
    DE59710587D1 (en) 2003-09-18
    CA2274798C (en) 2005-11-01
    WO1998027282A1 (en) 1998-06-25
    PL191788B1 (en) 2006-07-31
    MY119614A (en) 2005-06-30
    EP0956392B2 (en) 2005-12-07
    JP2001506330A (en) 2001-05-15
    CA2274798A1 (en) 1998-06-25
    EP1318240A2 (en) 2003-06-11
    EP1158098B1 (en) 2003-08-13
    ES2204794T3 (en) 2004-05-01
    JP3452939B2 (en) 2003-10-06
    AU5983698A (en) 1998-07-15
    CZ296530B6 (en) 2006-04-12
    ES2172832T3 (en) 2002-10-01
    RU2166019C2 (en) 2001-04-27
    US20030017771A1 (en) 2003-01-23
    ATE247193T1 (en) 2003-08-15
    ATE214765T1 (en) 2002-04-15
    NO315571B1 (en) 2003-09-22
    DE19652584A1 (en) 1998-06-18

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