EP1490553A1 - Grillage d'armature pour couches bitumineuses - Google Patents

Grillage d'armature pour couches bitumineuses

Info

Publication number
EP1490553A1
EP1490553A1 EP03706610A EP03706610A EP1490553A1 EP 1490553 A1 EP1490553 A1 EP 1490553A1 EP 03706610 A EP03706610 A EP 03706610A EP 03706610 A EP03706610 A EP 03706610A EP 1490553 A1 EP1490553 A1 EP 1490553A1
Authority
EP
European Patent Office
Prior art keywords
strands
elongation
reinforcement
grid
bituminous
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.)
Withdrawn
Application number
EP03706610A
Other languages
German (de)
English (en)
Inventor
Jürgen Kassner
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
Application filed by Huesker Synthetic GmbH and Co filed Critical Huesker Synthetic GmbH and Co
Publication of EP1490553A1 publication Critical patent/EP1490553A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/006—With additional leno yarn
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D19/00—Gauze or leno-woven fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D9/00—Open-work fabrics
    • 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
    • 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
    • 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
    • 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.]
    • Y10T442/184—Nonwoven scrim
    • Y10T442/198—Coated or impregnated

Definitions

  • the invention relates to a reinforcement grid for bituminous layers, in particular bituminous pavements, with intersecting strands of synthetic material.
  • a covering layer of a traffic area to be driven on for example the ceiling of a street or a star runway
  • Asphalt layers have a high resistance to the mechanical loads on a road surface in the usually occurring temperature ranges.
  • the asphalt mixture is at the location of the
  • Asphalt can be produced with very little ripple, so that they offer optimum rolling comfort for vehicle tires.
  • asphalt pavements have the disadvantage that they have a low elastic deformability. Even at low stresses due to mechanical loads or temperature fluctuations, the bituminous material of the asphalt surface begins to flow, and the asphalt surface is plastically and thus permanently deformed.
  • Reinforcement grids made of synthetic material have been used for several decades in order to increase the resistance to tension and improve its elastic properties while maintaining the positive properties of an asphalt surface.
  • Reinforcement meshes of this type are produced, for example, from highly resilient synthetic yarns made of polymer material, in particular polyester. These yarns are woven into grids with mesh openings several centimeters in size. The groups or strands of warp and weft threads that form the grid are held together by leno threads.
  • Such a reinforcement grid is known from the document DE 20 00 937 AI. To avoid the fact that the reinforcing grid forms a separating layer for the bituminous layer, the grid is provided with large mesh openings.
  • a reinforcement grid according to DE 20 00 937 AI is shown in Fig. 1 of the accompanying drawings.
  • the reinforcement mesh is usually coated with a bitumen-affine adhesive.
  • Alternative forms of such reinforcement mesh additionally have a textile layer filling the mesh, for example consisting of thin ribbons or of. a nonwoven.
  • a reinforcing mesh provided with a fleece layer is known from DE 196 52 584 AI and can be seen in the attached Figures 2 and 3 of the accompanying drawings.
  • This mesh-filling textile layer is also preferably coated with a bituminous adhesive. According to the embodiments of FIGS. 2 and 3, it can have air holes which allow trapped air and adhesive to pass through during the laying of the reinforcement grid.
  • the reinforcement grids are backed with a thick bitumen-impregnated fleece.
  • the warp thread strands can also be divided into two warp thread groups, the first warp thread group crossing the second warp thread group of the same warp thread strand per stitch in the manner of a half-turn.
  • Such a grid is the subject of the document DE 199 62 441 AI and shown in the attached Figure 4.
  • thin-layer plastic mats are also made from polymer plastics, which have strands that are perpendicular to one another and form stitches with an opening width of several centimeters. These mesh mats are also preferably made of polyester. Others common in construction technology Plastics such as polyethylene or polypropylene have not proven themselves as asphalt reinforcements because of their temperature sensitivity.
  • a significant disadvantage of the known reinforcement grids is their discontinuous stress / strain behavior.
  • polyester When tensile stresses are applied, polyester initially has a force absorption that increases approximately in proportion to the elongation, which essentially stagnates after a relative elongation of 1 to 2%.
  • Figure 4 schematically shows a stress / strain diagram of a typical polyester material. In the range between 2 and 5% of the elongation of the polyester material, no significant increase in the tension in the polyester material and thus the force absorbed can be observed. A substantial increase in stress only occurs again from around 5% of the material expansion. It should be taken into account that, according to the stress / strain curve for bitumen drawn in dashed lines in FIG.
  • a reinforcement grid made of glass fibers or glass fiber reinforced plastic has been proposed in the past.
  • a glass fiber has a considerably higher possibility of absorbing force, but it is almost inextensible and brittle.
  • a stress-strain diagram for glass fibers is shown schematically in FIG. 5, the course of the stress-strain curve for a bituminous material being drawn in broken lines.
  • glass fibers cannot absorb shear forces. Even when laying a bitumen layer, a reinforcement grid with glass fibers can be damaged in the bitumen layer. Due to the compression of the bitumen layer, shear forces occur which can overload glass fibers and cause them to break. Particularly when a bitumen layer is applied to a carriageway made of concrete slabs, high shear forces can arise both during laying and after laying, for example due to thermal expansion, which leads to the destruction of the glass fibers.
  • a glass fiber has a low alkali resistance, which makes it suitable for The runway and the runway of an airport are impaired because de-icing agents that can penetrate hairline cracks in the roadway can cause alkali-containing substances to reach the grille and - in the case of glass fibers - damage them.
  • the object of the present invention is to provide a reinforcement grid which can absorb high forces introduced into a bituminous layer and is elastically deformable.
  • the strands of synthetic material have an elongation at break which is between 3% and 8%.
  • the elongation at break of the synthetic material of the strands is preferably between 5 and 6% and thus exactly in the region of the elongation at break of a bituminous roadway layer.
  • the choice of a synthetic material which has essentially the same maximum elongation as the layer to be reinforced ensures that, on the one hand, the reinforced layer and, on the other hand, the reinforcement grid interact optimally. Both have the same area of maximum force absorption before the material breaks. Both materials are stretchable in a certain range, preferably by up to 5 or 6%, before the stress absorbed by the materials drops and cracks occur in the reinforced layer. In this way it is ensured that the reinforced layer can not only absorb high forces, but that the bituminous material can be deformed together with the reinforcement within its expansion range without damage to the bitumen layer or the reinforcement. In this way, the shear forces that occur during installation and also in the installed state due to loads and temperature fluctuations can easily be absorbed by deformation of the grid without causing damage.
  • the synthetic strands of the grids have a constant force absorption, that is to say an essentially constant stress / strain diagram.
  • the recorded one runs Tension value or the force absorbed by a strand with a certain cross-section essentially proportional to the value of the elongation.
  • synthetic materials - unlike metallic materials, for example - generally do not have an exactly proportional stress / strain curve.
  • a suitable synthetic material by choosing a suitable synthetic material, a largely steady and almost proportional stress / strain curve can be achieved which, on the one hand, does not have the area of increasing strain occurring with polyester without an increase in the absorbed stress and, on the other hand, does not have the brittle properties of a glass fiber.
  • the strength properties mentioned can be achieved by producing the intersecting strands of the reinforcing mesh from high-strength polyvinyl alcohol.
  • Polyvinyl alcohol (PVA) is a plastic with which the mechanical properties described above, i.e. essentially constant, almost proportional stress / strain curve and an elongation at break in the range between 5 and 6%, can be achieved.
  • the elongation at break essentially corresponds to the elongation at break of the reinforced bitumen layer.
  • PVA has a high chemical resistance and is neither attacked nor damaged by urea or by salt solutions that occur during road de-icing.
  • PVA is also moisture-independent, which means that it has the same strength in both wet and dry conditions.
  • a glass fiber for example, does not have this kind of moisture independence.
  • a glass fiber loses its strength considerably as a result of moisture, especially if the reinforced pavement has hairline cracks through which water can reach the reinforcement grid.
  • PVA Compared to a polyester material, PVA has a two to three times higher strength module, so that considerably thinner PVA strands can be used to achieve the same reinforcement.
  • PVA Compared to glass grids, PVA is much less brittle and can absorb significantly higher shear and buckling forces. The risk of a PVA grid being destroyed when it is installed or installed is thus much less than the damage or destruction of a glass fiber grid. Due to the similar elongation at break, PVA grids are usually only damaged if the reinforced bitumen layer is also damaged.
  • PVA grids have a significantly higher dynamic load capacity than grids made of glass fibers.
  • PVA can be processed directly into a reinforcement grid. However, it is preferably processed as a yarn to form a high-strength textile grid, in particular woven.
  • the grid made of polyvinyl alcohol (PVA) can be coated with a bitumen-affine adhesive like the known polyester grids. Furthermore, it is preferably reinforced with a light membrane, for example a thin fleece.
  • PVA polyvinyl alcohol
  • Fig. 1 shows a plan view of a first embodiment of a
  • FIG. 2 shows a plan view
  • FIG. 3 shows a perspective view of a second embodiment of a reinforcement grid for bituminous pavements.
  • FIG. 4 shows a top view of a further embodiment of a
  • Reinforcement grid which can be used for the reinforcement of pavements.
  • 5 shows a schematic stress / strain diagram for polyester and for a bitumen layer.
  • the reinforcement grids recognizable in FIGS. 1 to 4 have already been explained in detail at the beginning in connection with the description of the prior art. They each have, at regular intervals and parallel to one another, warp thread strands 1,1 ', 1 ".
  • the warp thread strands 1,1', 1" are formed from several threads in the textile lattices shown and consist of polyester or glass fibers according to the prior art , Right-angled to the warp strands 1,1 ', 1 "run at regular intervals and parallel to each other weft strands 2,2', 2", which also consist of polyester or glass fibers according to the prior art.
  • the warp thread strands 1,1 ', 1 are connected to the weft thread strands 2,2', 2" at the crossing points.
  • the connection is made with a leno thread 3, which is guided in each case via a warp thread strand 1 and runs alternately on the left and on the right side of the warp thread strand 1 under the weft thread strand 2.
  • the lattice fabric formed by the warp thread strands 1 and weft thread strands 2 is then coated with a bituminous mass which on the one hand promotes the good connection between the bituminous layer to be reinforced and the lattice and on the other hand fixes the intersecting warp and weft threads to one another.
  • the warp strands 1 and the weft strands 2 can be formed from polyvinyl alcohol, so that they have a largely constant stress / strain curve and have an elongation at break of about 5 to 6%.
  • FIGS. 2 and 3 show a reinforcement grid in which the warp thread strands 1 'and the weft thread strands 2' are placed on a thin carrier fleece 4 crossing one another on a Raschel machine.
  • the warp threads 1 ' are connected to the carrier fleece 4 by a binding thread 5.
  • the binding threads 5 also connect the warp threads 1 'with the weft threads 2'.
  • warp threads 1 'and weft threads 2' are together with the Fleece coated with a bitumen affine adhesive.
  • FIG. 4 A further embodiment of an open grid mat can be seen from FIG. 4, in which a textile grid according to DE 199 62 441 AI mentioned above can be seen.
  • the warp thread strands 1 "are also divided into two warp thread groups 6,7, the first warp thread group 6 crossing over the second warp thread group 7 of the same warp thread strand 1" per stitch in the manner of a half-turn.
  • FIGS. 5, 6 and 7 clearly show the advantageous stress / strain curve of a PVA grid according to the invention compared to the known polyester and glass grids.
  • Fig. 5 shows that a polyester thread hardly experiences an increase in the internal tensile stress over a substantial section in the range between an elongation of 2% to 5%. This means that the force absorption of the reinforcement grid does not increase significantly in this expansion range. The force absorbed by the reinforcing mesh made of polyester only increases from 5%. However, the elongation at break of the bituminous layer to be reinforced also lies in this range, so that when the reinforcing effect occurs, cracks in the bitumen layer can be expected to occur quickly.
  • a glass fiber grating has the stress / strain behavior shown in FIG. 6. Although it absorbs high forces, it is very brittle and breaks at low elongations.
  • a grid made of PVA is selected for the reinforcement of a bitumen layer, which has a stress / strain curve that runs essentially synchronously with the bitumen (see FIG. 7). It absorbs continuously increasing stresses in the range between 0 and 5% elongation. The stress increases in proportion to the elongation of the PVA material. Since the reinforced bitumen layer has a similar stress / strain curve, the reinforced layer and the reinforcing mesh can be loaded up to their elongation at break.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)
  • Woven Fabrics (AREA)

Abstract

Grillage d'armature pour couches bitumineuses, en particulier pour revêtements de chaussée contenant du bitume, qui est composé d'écheveaux croisés en matière synthétique. L'objet de la présente invention est d'obtenir un grillage d'armature qui peut absorber les forces élevées introduites dans une couche bitumineuse et qui est élastiquement déformable. A cet effet, les écheveaux en matière synthétique possèdent un allongement à la rupture allant de 3 % à 8 %, de préférence de 5 % à 6 %.
EP03706610A 2002-03-22 2003-03-11 Grillage d'armature pour couches bitumineuses Withdrawn EP1490553A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002113057 DE10213057A1 (de) 2002-03-22 2002-03-22 Armierungsgitter für bituminöse Schichten
DE10213057 2002-03-22
PCT/EP2003/002458 WO2003080934A1 (fr) 2002-03-22 2003-03-11 Grillage d'armature pour couches bitumineuses

Publications (1)

Publication Number Publication Date
EP1490553A1 true EP1490553A1 (fr) 2004-12-29

Family

ID=27798127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03706610A Withdrawn EP1490553A1 (fr) 2002-03-22 2003-03-11 Grillage d'armature pour couches bitumineuses

Country Status (8)

Country Link
US (1) US20050106964A1 (fr)
EP (1) EP1490553A1 (fr)
JP (1) JP2005520959A (fr)
AU (1) AU2003208704A1 (fr)
BR (1) BR0303087A (fr)
DE (1) DE10213057A1 (fr)
RU (1) RU2299217C2 (fr)
WO (1) WO2003080934A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2474637C2 (ru) * 2011-02-28 2013-02-10 Закрытое акционерное общество "ПРЕСТО-РУСЬ" Инновационная полимерная лента (варианты) и полоса, изготовленная из нее
RU177233U1 (ru) * 2016-08-03 2018-02-14 Общество с ограниченной ответственностью "Знаменский Композитный Завод" Сетка армирующая полимерно-композитная преднапряженная с нанодобавками
KR102060171B1 (ko) * 2019-04-19 2019-12-27 차윤수 바닥 포장재

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2000937C3 (de) * 1970-01-09 1978-06-01 H. & J. Huesker & Co, 4423 Gescher Gittergewebe zum Bewehren bitumengebundener Platten und Schichten
JPH05125733A (ja) * 1990-12-26 1993-05-21 Asahi Chem Ind Co Ltd 土木工事用の網状成形体
DE19652584A1 (de) * 1996-12-17 1998-06-18 Huesker Synthetic Gmbh & Co Textiles Gitter zum Bewehren bitumengebundener Schichten
DE19962441A1 (de) * 1999-12-22 2001-07-05 Huesker Synthetic Gmbh & Co Gittergewebe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03080934A1 *

Also Published As

Publication number Publication date
RU2299217C2 (ru) 2007-05-20
BR0303087A (pt) 2004-06-15
DE10213057A1 (de) 2003-10-02
US20050106964A1 (en) 2005-05-19
AU2003208704A1 (en) 2003-10-08
WO2003080934A1 (fr) 2003-10-02
JP2005520959A (ja) 2005-07-14
RU2004131215A (ru) 2005-07-10

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