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WO2017005392A1 - Renforcement routier avec zones de chevauchement marquées - Google Patents

Renforcement routier avec zones de chevauchement marquées Download PDF

Info

Publication number
WO2017005392A1
WO2017005392A1 PCT/EP2016/060024 EP2016060024W WO2017005392A1 WO 2017005392 A1 WO2017005392 A1 WO 2017005392A1 EP 2016060024 W EP2016060024 W EP 2016060024W WO 2017005392 A1 WO2017005392 A1 WO 2017005392A1
Authority
WO
WIPO (PCT)
Prior art keywords
fabric
zone
colour
road
substrate
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.)
Ceased
Application number
PCT/EP2016/060024
Other languages
English (en)
Inventor
Frederik Vervaecke
Hendrik Thooft
Henk CORNELUS
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.)
Bekaert NV SA
Original Assignee
Bekaert NV SA
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 Bekaert NV SA filed Critical Bekaert NV SA
Priority to EP16720152.4A priority Critical patent/EP3320145A1/fr
Publication of WO2017005392A1 publication Critical patent/WO2017005392A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

Definitions

  • the invention relates to a fabric for the reinforcement of roads or
  • the invention also relates to a road or pavement reinforced with such a fabric and to a method of reinforcing a pavement or a road.
  • WO-A1 -2014/161930 and WO-A1 -2014/161931 disclose a fabric to prevent reflective cracking.
  • Reflective cracking is the process by which an existing crack, discontinuity or joint propagates towards the surface through an overlying layer of asphalt. Once a reflective crack reaches the surface, an open path is created allowing the penetration of water into the lower layers of the pavement. Left untreated, this situation will lead to further deterioration of the pavement structure and to a reduction in overall serviceability.
  • the fabric disclosed in WO-A1 -2014/161930 discloses a fabric with a
  • the fabric WO-A1 -2014/161931 discloses a fabric with also a serious of substantially parallel elongated metal elements which are kept parallel by means of yarns.
  • a fabric adapted for the reinforcement of roads or pavements, such as an overlay on existing roads or pavements.
  • the fabric has a length in a longitudinal direction and a width in a transverse direction.
  • the fabric has in longitudinal direction a left zone extending along the length at the left border and a right zone extending along the length at the right side.
  • the left zone or the right zone or both are intended to overlap with a right or left zone of an adjacent fabric in order to optimally transfer the forces between adjacent fabrics in transverse direction of the formed composite fabric-asphalt or fabric-concrete. Either the left zone or the right zone or both are marked.
  • the left zone or the right zone or both are marked by a colour differing from the colour of the rest of the fabric.
  • elongated longitudinal reinforcing elements are running substantially parallel in longitudinal direction and elongated transverse reinforcing elements are running substantially parallel in transverse direction.
  • elongated longitudinal and transverse reinforcing elements are running substantially parallel in transverse direction.
  • reinforcement elements may be metal wires, metal bundles or metal cords, carbon fibers, synthetic fibers or glass fibers or yarns made therefrom. Preference is given to steel cords since steel cords both have a high strength and flexibility due to its twisting of thin wires or filaments.
  • elongated transverse reinforcement elements have a spacing in-between ranging from 15 mm to 75 mm, e.g. from 20 mm to 70 mm, e.g. from 25 mm to 65 mm.
  • the left zone or the right zone or both comprise two to six elongated longitudinal reinforcement elements.
  • the width of the overlapping and thus the width of the left zone and the right zone may vary depending upon to the distance between two adjacent elongated longitudinal reinforcing elements. Whatever the width, however, it is highly preferable that the width of the overlap is constant over the whole length.
  • the fabric further comprises
  • a substrate has the advantage that the asphalt which is deposited on the fabric with the substrate does not penetrate between the reinforcing elements and thus flattens the fabric, in other words, undulation of the fabric is avoided.
  • the elongated longitudinal reinforcement elements are bound to the substrate. This bounding can be realized in various ways, e.g. by means of a glue or by means of a yarn.
  • the elongated transverse reinforcement elements may or may not be bound to the substrate.
  • the binding the elongated transverse reinforcing elements may be done by means of an extra stitch at the points where elongated transverse reinforcing elements cross with elongated
  • the elongated transverse reinforcement elements are not bound to the substrate, they preferably lie under the elongated longitudinal reinforcement elements. In this case the elongated transverse reinforcement elements are not bound to the substrate, they preferably lie under the elongated longitudinal reinforcement elements. In this case the elongated transverse reinforcement elements are not bound to the substrate, they preferably lie under the elongated longitudinal reinforcement elements. In this case the elongated transverse reinforcement elements are not bound to the substrate, they preferably lie under the elongated longitudinal reinforcement elements. In this case the elongated transverse
  • reinforcement elements are not surrounded by a yarn and are less fixed: To a certain extent some movement is possible. This case is also the most economical way of using a yarn, since only the elongated
  • the embodiment of a fabric with a substrate where only the elongated transverse reinforcing elements lie under the elongated longitudinal reinforcing elements and where only the elongated longitudinal reinforcing elements are bound to the substrate either by means of an adhesive or by means of a yarn, can be used independently without the marking feature.
  • this embodiment has the advantage of an economical way of manufacturing, since only the elongated longitudinal reinforcement elements need to be bound.
  • the elongated transverse reinforcing elements are less fixed and have some freedom of movement.
  • One way of colour marking is that the two to six elongated longitudinal reinforcement elements in the right or left zone or in both right and left zone have a colour different from the colour of the other elongated longitudinal reinforcement elements.
  • This different colour may be obtained by painting or by applying a different coating with a differing colour, for example a brass or copper coating versus a zinc or a zinc aluminium coating.
  • a polymer coating may be applied by means of emulsion or extrusion and the polymer may have a different colour.
  • the fabric further comprises yarns for stitching the elongated longitudinal reinforcement elements to the substrate.
  • the yarns that are located in the left zone or the right zone or both have a colour different from the colour of the yarns in the middle zone.
  • the yarns in the left and right zone may have a red colour while the yarns in the middle zone have a white colour.
  • the fabric further comprises a substrate and this substrate has in the left zone or in the right zone or in both a colour different from the colour of the substrate in the middle zone.
  • this substrate has in the left zone or in the right zone or in both a colour different from the colour of the substrate in the middle zone.
  • a different colour another visually differing marking may also be applied.
  • a third aspect of the invention there is provided a method of reinforcing a road or pavement with a fabric according to the first aspect of the invention.
  • This method comprises following steps:
  • a first adhesion layer such as a tack coat (i.e. bitumen emulsion) or a bitumen layer (i.e. pure or polymer modified bitumen).
  • the adhesion layer is sprayed in exactly the same dimensions (or slightly broader) than the reinforcing product
  • Figure 1 is a perspective view of one example of a fabric according to the first aspect of the invention.
  • Figure 2 is an enlarged upper view of part of a fabric according to the first aspect of the invention.
  • Figure 3a is a cross-section according to plane IIIA-IIIA in Figure 2 and
  • Figure 3b is a cross-section according to plane IIIB-IIIB in Figure 2.
  • Figures 4a, 4b, 4c, 4d illustrate various steps in the installation of an
  • Figure 5 is a perspective view of another example of a fabric according to the first aspect of the invention. Mode(s) for Carrying Out the Invention
  • Figure 1 shows a perspective view of partially unrolled fabric 100.
  • the fabric 100 has a left zone 102 and a right zone 104 and a middle zone in- between the left zone 102 and the right zone 104.
  • the fabric 100 has elongated longitudinal reinforcement elements 106 in the middle zone, five elongated longitudinal reinforcement elements 108 in the left zone 102 and five elongated longitudinal reinforcement elements 1 10 in the right zone 104.
  • the fabric 100 further comprises elongated transverse reinforcement
  • non-metal reinforcement elements are not excluded, preference is given to metal reinforcement elements and more particularly to steel elements because of the strength of steel. Steel cords are preferred because of their flexibility and ability to be wound in a roll.
  • the steel cords may have any construction such as a 3x1 , a 4x1 , a 1 +6, a 2+2, ...
  • the steel filaments in the steel cords are preferably coated with a
  • the steel filaments have a diameter which may range from 0.10 mm to 0.50 mm, e.g. from 0.20 mm to 0.40 mm.
  • the steel filaments individually or the steel cords as a whole may be provided with a plastic coating.
  • the steel composition may be a plain high carbon steel composition
  • a minimum carbon content of 0.40% a manganese content ranging from 0.40% to 0.70%, a silicon content ranging from 0.15% to 0.30%, a maximum sulfur content of 0.03%, a maximum phosphorus content of 0.30%, all percentages being
  • the distance between two adjacent longitudinal steel cords 106, 108 or 1 10 can be 40 mm or 50 mm.
  • the distance between two adjacent transverse steel cords may be 30 mm or 50 mm.
  • the fabric 100 further comprises a substrate 114.
  • This substrate 114 can be a non-woven or a plastic grid.
  • the nonwoven may be of polyethylene, polypropylene, polyethyleneterephtalaat, polylactic acid, polyamide, ... or combinations thereof.
  • the nonwoven may be spunbond, needle-punched, spunlaced,
  • the plastic grid may be made of polyethylene, polypropylene, polyethyleneterephtalate, polylactic acid, polyamide, ... or combinations thereof.
  • the plastic grid may be woven, extruded, thermobonded, ...
  • the advantage of a substrate is dimensional stability together with a lightweight open structure.
  • the non-woven version has the advantage that the tack coat which is applied as first layer above the road to be renovated, may penetrate in the substrate 114 and thus assures a good adhesion during installation.
  • the plastic grid has the advantage that it is widely available and is cheap.
  • Figure 2 gives an enlarged and upper view of part 1 16 in Figure 1 .
  • Figure 3a is a cross-section according to plane IIIA-IIIA of Figure 2 and Figure 3b is a cross-section according to plane IIIB-IIIB of Figure 2.
  • One or more synthetic yarns 202 bind the longitudinal steel cords 106 in the middle zone to the substrate 1 14 and one or more synthetic yarns 204 bind the longitudinal steel cords 108 in the left zone 102 to the substrate 1 14.
  • Transverse steel cords 1 12 are not directly bound by means of the yarns 202 and 204. As further shown in Figure 3a and in Figure 3b, the transverse steel cords 1 12 lie under the longitudinal steel cords 106, 108 (and 1 10) and are thus held together.
  • the colour marking is realized by giving the yarns 202 in the middle zone a colour different from the colour of the yarns 204 in the left zone. This is made clear by showing the yarns 204 somewhat thicker than the yarns 202 in Figure 2 and by showing the yarns 204 as a rhomb and the yarns 202 as a circle in Figure 3a and Figure 3b.
  • Renovating a road or pavement 400 according to the invention may be done as follows:
  • a first bitumen layer 402 is laid on the left side of an existing road 400 over a width which is at least equal to the width of a fabric 100.
  • Figure 4b illustrates the next step: a first reinforcing fabric 100 with a left zone 102 and a right zone 104 is unrolled over its total length at the left side of the road 400 over the first adhesive bitumen layer 402.
  • a second adhesive bitumen layer 402' is applied starting from the right zone 104 of the first fabric 100, see Figure 4c.
  • a second fabric 100' is unrolled over its whole lengthover the second adhesive bitumen layer 402'. This realizes an overlap of its left zone 102' with the right zone 104 of the first fabric, see Figure 4d. This assures an anchoring between the two fabrics 100 and 100' and results in an optimal transfer of the forces in traverse direction.
  • Another alternative way of renovating a road is that after application of a first bitumen layer 402 and a first fabric 100, i.e. at the stage of Figure 4b, an asphalt layer is applied, however, thereby leaving uncoated the right zone 104.
  • colour marking makes sure that the overlapping of the left and right zones 104, 102' is paid attention to.
  • FIG. 5 illustrates another example of a fabric 500 according to the invention.
  • Substrate 1 14 has in the left zone 102 and in the right zone 104 a visual marking 502, 504 that is different from the visual aspect of the middle zone.

Landscapes

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

Abstract

Cette invention concerne un tissu (100) conçu pour le renforcement des routes ou chaussées, présentant une longueur dans une direction longitudinale et une largeur dans une direction transversale. Dans la direction longitudinale, le tissu (100) présente une zone gauche (102) s'étendant sur la longueur au niveau de la bordure gauche et une zone droite (104) s'étendant sur la longueur au niveau du côté droit. La zone gauche (102) ou la zone droite (104) ou les deux sont destinées à se chevaucher avec une zone droite (104') ou gauche (102') d'un tissu adjacent (100'). L'une ou l'autre de ladite zone gauche (102) ou de la zone droite (104) ou les deux sont marquées, de préférence par coloration.
PCT/EP2016/060024 2015-07-08 2016-05-04 Renforcement routier avec zones de chevauchement marquées Ceased WO2017005392A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16720152.4A EP3320145A1 (fr) 2015-07-08 2016-05-04 Renforcement routier avec zones de chevauchement marquées

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15175800 2015-07-08
EP15175800.0 2015-07-08

Publications (1)

Publication Number Publication Date
WO2017005392A1 true WO2017005392A1 (fr) 2017-01-12

Family

ID=53546523

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/060024 Ceased WO2017005392A1 (fr) 2015-07-08 2016-05-04 Renforcement routier avec zones de chevauchement marquées

Country Status (2)

Country Link
EP (1) EP3320145A1 (fr)
WO (1) WO2017005392A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017553A1 (fr) * 1993-12-23 1995-06-29 Fundia Bygg Ab Procede de renforcement de revetements de chaussee presentant les proprietes de matieres plastiques et treillis de renforcement utilise avec celui-ci
DE19820951A1 (de) * 1998-05-11 1999-11-18 Huesker Synthetic Gmbh & Co Verbundstoffbahn zum Bewehren von Erdschichten
EP2063042A1 (fr) * 2007-11-26 2009-05-27 Avi Alpenländische Veredelungs-Industrie Gesellschaft m.b.H. Treillis d'armature et procédé destiné à la fabrication de ceux-ci ainsi que procédé de recouvrement de treillis d'armature
WO2014161930A1 (fr) * 2013-04-04 2014-10-09 Nv Bekaert Sa Structure de renforcement de chaussées comprenant des ensembles de filaments métalliques groupés, couplés ou intégrés à un substrat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017553A1 (fr) * 1993-12-23 1995-06-29 Fundia Bygg Ab Procede de renforcement de revetements de chaussee presentant les proprietes de matieres plastiques et treillis de renforcement utilise avec celui-ci
DE19820951A1 (de) * 1998-05-11 1999-11-18 Huesker Synthetic Gmbh & Co Verbundstoffbahn zum Bewehren von Erdschichten
EP2063042A1 (fr) * 2007-11-26 2009-05-27 Avi Alpenländische Veredelungs-Industrie Gesellschaft m.b.H. Treillis d'armature et procédé destiné à la fabrication de ceux-ci ainsi que procédé de recouvrement de treillis d'armature
WO2014161930A1 (fr) * 2013-04-04 2014-10-09 Nv Bekaert Sa Structure de renforcement de chaussées comprenant des ensembles de filaments métalliques groupés, couplés ou intégrés à un substrat

Also Published As

Publication number Publication date
EP3320145A1 (fr) 2018-05-16

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