EP2686482A2 - Semelle élastique recyclée pour des éléments - Google Patents

Semelle élastique recyclée pour des éléments

Info

Publication number
EP2686482A2
EP2686482A2 EP12730775.9A EP12730775A EP2686482A2 EP 2686482 A2 EP2686482 A2 EP 2686482A2 EP 12730775 A EP12730775 A EP 12730775A EP 2686482 A2 EP2686482 A2 EP 2686482A2
Authority
EP
European Patent Office
Prior art keywords
mat
elastic
concrete element
concrete
textile
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Withdrawn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
EP12730775.9A
Other languages
German (de)
English (en)
Inventor
Patrick Carels
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.)
PANDROL CDM TRACK NV
Original Assignee
CDM NV
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 CDM NV filed Critical CDM NV
Publication of EP2686482A2 publication Critical patent/EP2686482A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/46—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the invention concerns an elastic sole with a concrete element on which the rails of a railway rest, in particular a sleeper, whereby this elastic sole comprises a tack mat and an elastic mat which are fixed to one another.
  • Said tack mat contains a textile structure which is at least partly embedded in the concrete element so as to anchor the elastic sole to the concrete element.
  • the invention also concerns a method for manufacturing an elastic sole and a concrete element with an elastic sole on which this concrete element is intended to rest.
  • elastic soles are fixed to the concrete elements by embedding these soles at least partly in the concrete.
  • Such elastic soles are described for example in patents EP1186709B1 and EP1298252B1.
  • European patent EP1 186709B1 describes an elastic sole which is provided with upright parts which have hooks in the shape of a harpoon. These parts are embedded in the bottom side of the concrete sleeper. These upright parts are disadvantageous in that they penetrate rather deeply in the concrete and consequently have an adverse effect on the strength of the concrete sleepers.
  • European patent EP1298252B1 describes a method for connecting a concrete sleeper to a railway bed by means of an elastic mat whereby this elastic mat is fixed to the concrete by means of a geotextile.
  • the geotextile is embedded in the wet concrete of the concrete sleeper on the one hand, and it is either embedded in the elastic mat or welded to the latter on the other hand.
  • Said geotextile is disadvantageous, however, in that its fibres become detached under the influence of shear resistances, as a result of which the sleeper comes off the elastic mat.
  • the invention aims to remedy these disadvantages by providing an elastic sole and a method which make it possible to provide the bottom side of a concrete element, in particular a sleeper, with an elastic sole in a simple manner.
  • the present invention also aims to provide a solution which make it possible to attach the elastic sole in such a manner that it will resist much higher shearing forces than the present solutions without compromising the strength of the concrete element.
  • the invention aims to propose a solution that is more environmentally friendly and cost-effective compared to current solutions.
  • a part of a rubber layer of a pneumatic tyre is removed, which part forms an elastic mat, whereby this part is removed from said pneumatic tyre together with at least a part of a textile layer, such that an elastic sole is obtained with the above-mentioned part of a textile layer on one side, which forms a tack mat.
  • This tack mat is hereby at least partly embedded in the elastic mat and it has at least partially free textile parts.
  • These free textile parts of the tack mat are at least partly embedded in the concrete element by providing the tack mat against wet concrete of the concrete element, such that the free textile parts penetrate in an outer layer of the concrete element, after which this wet concrete hardens and the tack mat is anchored in the concrete element, such that finally the elastic mat is attached to the concrete element by means of the tack mat.
  • the concrete element forms a sleeper, for example, on which the rails of a railway rest.
  • the part of the rubber layer forming the elastic mat and the part of the textile layer are removed together from said pneumatic tyre, such that the textile parts of the textile layer extend above the elastic mat up to a height which amounts to 0.1 to 3 mm, in particular 0.2 to 2 mm, and preferably 0.2 to 1 mm.
  • the rubber layer and/or the textile layer are provided with at least a longitudinal and/or a diagonal incision.
  • the invention also concerns an elastic sole with a concrete element on which the rails of a railway rest, in particular a sleeper, whereby this elastic sole comprises an elastic mat and a tack mat which are fixed to one another, whereby this tack mat is provided with textile parts which are embedded at least partly in the concrete element and, preferably, also at least partly in the elastic mat, whereby the textile parts consist at least partly of cords extending practically parallel to the elastic mat.
  • the invention also concerns a method for manufacturing an elastic sole with a tack mat derived from a pneumatic tyre.
  • Figure 1 schematically represents a cross section of an elastic sole with a concrete element according to an embodiment of the invention.
  • Figure 2 schematically represents a detail of figure 1 displaying a tack mat with an elastic mat.
  • Figure 3 schematically represents the construction of a rubber pneumatic tyre, in particular a schematic cross section of a radial tyre.
  • the invention generally concerns an elastic sole for a concrete element 5.
  • the invention concerns an elastic sole for a sleeper on which the rails 6 of a railway rest, as is schematically represented in figure 1.
  • This elastic sole is situated in a railway between the concrete element 5 and the ballast 1 of the railway bed.
  • Such soles protect the ballast stones and extend their life.
  • the invention also concerns a method for manufacturing a concrete element 5 with an elastic sole attached to it.
  • the elastic sole consists of an elastic mat 2 and a tack mat 3, whereby the tack mat 3 is used to fix the elastic mat 2 to the concrete element.
  • the elastic sole is obtained from a pneumatic tyre, in particular a car tyre or the like.
  • material from a worn tyre can be at least partly used for this purpose.
  • Said car tyre may consist for example of a radial tyre or a cross-ply tyre and it contains mainly an elastic material such as synthetic rubber.
  • a pneumatic tyre is built as represented in figure 3.
  • the outside 10 has a rubber tread 7, possibly embossed.
  • Said tread 7 is the upper side of a rubber top layer 13.
  • Under this rubber top layer 13 is situated what is called a carcass or textile layer 14 with a rubber underlay 12 underneath.
  • a carcass or textile layer 14 with a rubber underlay 12 underneath.
  • several other layers may be provided and/or an additional reinforcement in steel.
  • the inside 1 1 of such a tyre is usually provided with a rubber airtight layer.
  • the rubber top layer 13 and the textile layer 14 lying against it are removed together from the tyre in the circumferential direction of the latter.
  • the top part of the tyre is cut off, preferably practically parallel to the tread 7 and the textile layer 14, right under the textile layer 14.
  • a strip is hereby obtained comprising at least a part of the textile layer 14 and a part of the rubber layer 13.
  • the strip hereby has a width, for example, corresponding more or less to the width of the tread 7. This width may amount for example to some 180 mm and it depends on the dimensions of the recycled car tyre.
  • Said strip may also be obtained by making use of a plane or grater so as to remove material from the inside of the pneumatic tyre. It is also possible to remove material from the outside of the pneumatic tyre in this way.
  • the total thickness C of the strip also depends on the nature of the car tyre and the wear of its tread 7. Said thickness C may amount for example to some 5 mm to 15 mm. Preferably, the thickness amounts to some 6 mm to 10 mm, in particular some 8 mm, or in particular some 6 mm to 7 mm.
  • strips can be combined.
  • these strips can be placed next to one another and stiffened via what is called a 'temperature/pressure/time' process (TPT) in a press oven.
  • TPT 'temperature/pressure/time' process
  • the strips are hereby rigidly fixed to each other by subjecting the elastomeric rubber to an elevated temperature and pressure for a certain period of time.
  • the textile layer 14 contains textile threads and/or cords 4 which, for example in a radial tyre, run mainly parallel to the surface of the tyre and crosswise in relation to the driving direction.
  • the driving direction is in this case the direction in which the tyre moves when rolling over the tread 7.
  • These textile threads and/or cords 4 can be made for example of synthetic fibres such as rayon, polyester, polyamide and/or aramid.
  • Said textile layer 14 may also contain steel wires. Consequently, depending on the application of the elastic sole, it is possible to select a specific type of car tyre to be recycled.
  • the textile layer 14 consists of a structure with textile parts such as textile threads and/or cords 4.
  • the textile layer 14 may consist of a woven structure, parallel cords 4 and/or intersecting cords 4.
  • this structure may consist of parallel cords 4 which are joined and are possibly interwoven.
  • Said structure has a certain thickness which may amount for example to 1 mm to 3 mm, preferably some 2 mm.
  • These textile threads and/or cords 4 are at least partly embedded in the rubber top layer 13. Further, these textile threads and/or cords 4 are at least partly free on a side opposite the rubber top layer 13.
  • the textile parts 4 preferably extend above the elastic mat 2 up to a height which amounts to 0.1 to 3 mm, in particular 0.2 to 2 mm, and preferably 0.2 to 1 mm.
  • the textile layer 14 may be processed such that textile parts 4 raise themselves at least partly better.
  • the textile layer 14 may be processed for example by means of a comb, a plane or a sanding element such as sanding paper, a scourer or a sanding block.
  • These textile parts 4 may also at least partly consist of fine erected hairs of the textile layer 14.
  • incisions in the rubber top layer 13 and/or the textile layer 14 can be provided for example longitudinally and/or diagonally in relation to the driving direction of the tyre.
  • the strip can be punched or sawn to a desired size.
  • a strip with dimensions that are suitable to be put under a sleeper can be obtained.
  • the concrete element 5 and the tack mat 3 are put together when the concrete of the concrete element 5 is still wet and has not cured yet.
  • the tack mat 3 has a surface with a three- dimensional structure which penetrates in the wet concrete. This structure consists of the textile threads and/or cords 4 of the textile layer 14 which are at least partly embedded in the rubber layer and extend at least partly further in the concrete, as shown in figure 2.
  • the tack mat 3 is at least partly embedded in the concrete element 5.
  • the tack mat 3 hereby merely extends in a thin layer of concrete 8 up to a certain depth A.
  • the tack mat 3 preferably merely extends in what is called the laitance, such that it does not adversely affect the firmness of the concrete element 5. Further, any chippings 9 that are present in the concrete will not hinder the anchoring of the tack mat 3.
  • the textile structure When the elastic sole fits closely against the concrete element, the textile structure will extend in the concrete element up to a depth A which preferably maximally amounts to 0.2 to 4.0 mm.
  • a pull-out force may be determined.
  • This pull-out force is in this case the force needed to pull the tack mat out of the concrete element, such that the elastic sole comes off the concrete element.
  • the textile structure as such is sufficiently strong and that the different textile threads and/or cords are sufficiently attached to each other. This is achieved in that these textile threads and/or cords are situated in a woven structure and/or are at least partly embedded in the rubber layer 13 of the elastic mat 2.
  • the anchoring depth of the tack mat 3 is preferably very small, such that it has practically no impact on the structure and strength of the concrete element. Said depth is preferably very small as well, such that any chippings present in the concrete element have no impact on the anchoring of the tack mat. Consequently, according to the invention, the textile parts 4 merely extend in the outer layer 8 of the concrete element 5.
  • the concrete which is poured in a formwork for manufacturing the concrete element can be compacted by means of a vibrating plate.
  • the elastic sole can also be applied on the concrete element 5 by providing said sole beforehand in a formwork, after which the concrete is poured in the formwork in order to manufacture the concrete element.
  • the invention is not restricted to the above-described method and device according to the invention.
  • the different elements of the described embodiments can be mutually combined, and different types of pneumatic tyres can be used depending on the desired qualities of the elastic sole.
  • an underlying rubber layer 12 can be used together with the textile layer 14 instead of the rubber top layer 13. Also part of the tread can be removed to thus obtain a thinner elastic sole, for example.
  • the textile layer can be partly removed to obtain erected free far ends of the textile threads and/or cords, which can provide for a better adhesion in the concrete element.
  • rubber according to the invention includes natural and synthetic rubber and any other equivalent suitable elastomeric materials which can be used to replace natural and synthetic rubber.
  • a rubber strip with an adhering textile layer consisting of for example parallel cords can be made, analogous to those in a pneumatic tyre.
  • the elastic mat can then be made for example of resin-bound rubber granules and the textile layer could be made of polyamide, polyester, polypropylene and/or polyethylene.
  • an elastic sole can be made by gluing a textile layer on an elastic mat formed of an elastomeric material.
  • the elastomeric layer and/or the textile layer can for example be obtained from a pneumatic tyre.
  • the elastic sole according to the invention can also be obtained by stripping a strip of elastomeric rubber from a pneumatic tyre, after which a textile layer is glued on this strip.
  • At least a part of a textile layer can be obtained from a pneumatic tyre, after which this part of the textile layer is glued on an elastic mat or an elastomeric strip which was not necessarily obtained from a pneumatic tyre.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Road Paving Structures (AREA)

Abstract

L'invention concerne une semelle élastique ayant un élément en béton (5) où les rails (6) d'une voie de chemin de fer reposent, ce par quoi cette semelle élastique comporte un tapis élastique (2) et un tapis adhésif (3) qui sont fabriqués à partir d'un pneu, ce par quoi le tapis adhésif (3) est au moins partiellement encastré dans l'élément en béton (5) à des fins de fixation du tapis élastique (2).
EP12730775.9A 2011-03-15 2012-03-15 Semelle élastique recyclée pour des éléments Withdrawn EP2686482A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2011/0162A BE1020135A3 (nl) 2011-03-15 2011-03-15 Gerecycleerde elastische zool voor betonnen elementen onder spoorstaven van een spoorweg en werkwijze voor het bevestigen van deze zool.
PCT/BE2012/000015 WO2012122610A2 (fr) 2011-03-15 2012-03-15 Semelle élastique recyclée pour des éléments en béton sous les rails d'une voie de chemin de fer et procédé de fixation de cette semelle

Publications (1)

Publication Number Publication Date
EP2686482A2 true EP2686482A2 (fr) 2014-01-22

Family

ID=44851537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12730775.9A Withdrawn EP2686482A2 (fr) 2011-03-15 2012-03-15 Semelle élastique recyclée pour des éléments

Country Status (3)

Country Link
EP (1) EP2686482A2 (fr)
BE (1) BE1020135A3 (fr)
WO (1) WO2012122610A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014203228A1 (fr) * 2013-06-21 2014-12-24 Pandrol Cdm Track S.A. Semelle élastique recyclée
DE102020115509A1 (de) * 2020-06-10 2021-12-16 Het Elastomertechnik Gmbh Schwellenbesohlung für ein Betonbauteil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405658B (de) * 1991-12-20 1999-10-25 Porr Allg Bauges Oberbau mit betonschwellen
ES2166732B2 (es) 2000-09-12 2003-07-01 Plasticos Mondragon Sa Suela bajo traviesa de hormigon para vias de alta velocidad.
CA2332060A1 (fr) * 2000-10-25 2002-04-25 Mango Zeid Methode pour produire des tissus fibreux a partir de pneus recycles
EP1298252B2 (fr) * 2001-10-01 2011-06-01 RST-Rail Systems and Technologies GmbH Traverse avec revêtement sur le dessous
EP2126214A1 (fr) * 2007-02-22 2009-12-02 SSL-Schwellenwerk und Steuerungstechnik Linz GmbH Procédé de réalisation d'une semelle pour traverse sur un corps de traverse et traverse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012122610A2 *

Also Published As

Publication number Publication date
WO2012122610A2 (fr) 2012-09-20
BE1020135A3 (nl) 2013-05-07
WO2012122610A3 (fr) 2012-11-01

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