EP3061867B1 - Ballast and method for producing same - Google Patents

Ballast and method for producing same Download PDF

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Publication number
EP3061867B1
EP3061867B1 EP14856708.4A EP14856708A EP3061867B1 EP 3061867 B1 EP3061867 B1 EP 3061867B1 EP 14856708 A EP14856708 A EP 14856708A EP 3061867 B1 EP3061867 B1 EP 3061867B1
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EP
European Patent Office
Prior art keywords
ballast
polymer layer
aggregate
elastomer material
aggregates
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.)
Active
Application number
EP14856708.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3061867A4 (en
EP3061867A1 (en
Inventor
Andrés LÓPEZ PITA
Nahuel MANZO COSTANZO
Valentí FONTSERÈ
Antonio Ausilio
Emanuele DE AMBRI
Elisa Basei
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.)
Universitat Politecnica de Catalunya UPC
Administrador de Infraestructuras Ferroviarias ADIF
Comsa SA
Mapei SpA
Original Assignee
Universitat Politecnica de Catalunya UPC
Administrador de Infraestructuras Ferroviarias ADIF
Comsa SA
Mapei SpA
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 Universitat Politecnica de Catalunya UPC, Administrador de Infraestructuras Ferroviarias ADIF, Comsa SA, Mapei SpA filed Critical Universitat Politecnica de Catalunya UPC
Priority to PL14856708T priority Critical patent/PL3061867T3/pl
Publication of EP3061867A1 publication Critical patent/EP3061867A1/en
Publication of EP3061867A4 publication Critical patent/EP3061867A4/en
Application granted granted Critical
Publication of EP3061867B1 publication Critical patent/EP3061867B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/001—Track with ballast

Definitions

  • the present invention relates to a ballast with improved characteristics in terms of durability and resistance to fragmentation with respect to other rail track bed materials.
  • the invention also relates to the method for producing said improved ballast.
  • ballast as a rail track bed is widely known, but it has some drawbacks.
  • the aggregate suitable for this use must meet required characteristics which are more exacting the higher the speed of the trains is or the higher the load that said trains transport, the sharpness of the edges of the aggregate being one of the essential characteristics, because said sharpness is what provides stability and prevents the ballast from flowing and causing track deformations with train vibrations.
  • the difficulty in finding aggregates that meet all the characteristics required by sets of technical specifications makes them more expensive and leads to the need to move them over great distances, making them even more expensive.
  • WO2011131621A1 Some products and methods for mitigating these drawbacks are known, such as for example, the invention described in patent document WO2011131621A1 , where it anticipates the use of a ballast layer impregnated with a component which is subsequently sprayed with a second component producing a reaction, generating a protective polyurethane layer binding the ballast and prolonging its service life, but at the expense of complicating its maintenance or replacement, in addition to achieving an excessively monolithic result, greatly reducing the elasticity of the assembly. It must also be pointed out that the application of said chemical components in-situ can cause environmental contamination problems.
  • WO 2013/120059 A1 further discloses a crushed ballast consisting of aggregates individually coated with a polymer layer that integrates a granular elastomer material.
  • the proposed invention relates to a crushed ballast with improved durability and resistance to fragmentation for rail infrastructures, consisting of aggregates with a particle size distribution selected from between 25 mm and 100 mm, individually coated with a first solidified polymer layer which integrates a granular elastomer material with granules having a size smaller than 4 mm, preferably having a size smaller than 2 mm.
  • the vibrations can be absorbed by these granules, without causing the mentioned aggregates to wear out at all, such that the service life of the ballast is prolonged along with its elasticity, making it unnecessary to arrange elastomer parts between the ties and the ballast or between the tracks and the ties.
  • a reduction in the noise level produced by the passage of trains as well as a reduction in the ballast-flying phenomenon as the train passes are also achieved.
  • an aggregate treated accidentally pelted against the undersides of the train would cause less damage as it is coated with an elastomer material.
  • a second polymer layer over the aggregate provided with the elastomer material adhered with the first polymer layer, said second polymer layer providing a protective coating for protecting the elastomer material, and an increased fixing.
  • This arrangement allows using aggregates which, before receiving the proposed coating, do not have the characteristics required for use thereof as a rail ballast, either because their edges are not sharp enough, or because of another reason.
  • the granular elastomer material can originate from the shredding of recycled material, such as for example, tires, which increases the value of highly polluting waste, and allows giving it a new use, in addition to taking advantage of its properties with a competitive cost.
  • the polymer material will be a material from the polyurethane family, since its elasticity and resistance properties, as well as its drying process and compatibility with other raw materials that are contemplated make it an optimal material, allowing it to be applied in liquid form and to solidify quickly. Furthermore, once the drying process is completed no pollutants are discharged to the environment.
  • the method applied for producing the ballast object of the present invention consists of applying in liquid form the first polymer layer on the aggregate.
  • This method can be carried out, as a non-limiting example, by means of spraying or pouring a polymer product on an aggregate which is spread on and conveyed by a flush grid conveyor belt, or by means of immersing said aggregate into a tank containing said polymer material, and it is then extracted and dispersed so that it can be dried in the crushed form, by means of a vibrating conveyor, for example.
  • the granular elastomer material can be integrated to the aggregate by means of mixture thereof with the liquid polymer material before the application thereof on the aggregate, or according to a second embodiment, it can be adhered to the aggregate already impregnated with the polymer material but before drying same, for example by means of scattering or pouring the said elastomer material on the aggregate, this aggregate being spread on a flush grid conveyor belt or on a vibrating conveyor.
  • Another possibility of application of the elastomer material is by means of immersion by means of vibration of the aggregate impregnated with the polymer material before drying same in a tank filled with said granular elastomer material.
  • the polymer material can be of the type which solidifies in contact with moisture, or by evaporation of volatile fractions, or by heat drying, or as it reacts upon applying a second component, in this case the method described up until now would be followed by the application of this second component to trigger solidification.
  • a second coating polymer layer has been envisaged to assure the complete adhesion of the elastomer material to the aggregate.
  • This second layer can be applied in a way similar to the way the first layer is applied.
  • This method of treating aggregate for producing the proposed ballast can be developed by means of a treatment plant having a small enough size so as to allow transport by road or by train to a location close to the location where the ballast must be installed. This possibility again reduces the production costs as transport of the raw materials is reduced.
  • the proposed coating for aggregates 1 allows producing aggregates provided with protuberances. These protuberances, when putting a plurality of these aggregates 1 in a heap to form a ballast base for a railway track, generate a geometric interaction between these protuberances, greatly increasing the stability of the assembly ( Figure 5 ).
  • Figure 1 shows an aggregate which has been coated with a first polymer layer 2 on which the granules of the elastomer material 3 have been adhered
  • Figure 2 shows this same configuration but provided with a second polymer layer 4 strengthening the fixing of the elastomer material 3.
  • Figure 3 shows an aggregate which has been coated with a first polymer layer 2 that had been previously mixed with the granules of the elastomer material 3 which have adhered to the aggregate 1 upon applying said first polymer layer 2.
  • Figure 4 shows this same configuration but provided with a second polymer layer 4 strengthening the fixing of the elastomer material 3.
  • the mentioned protuberances being of an elastomer material allows, in addition to a high stability, the ballast to have certain elastic properties and to be capable of absorbing vibrations without wearing out. This property results in greater durability, less frequent maintenance, a lower noise level as the train passes, and an increased safety.
  • Said elastomer material 3 can be formed completely or partially by rubber originating from shredded tires, an economical material which constitutes increasing the value of waste.
  • the production method used in the aggregates 1 shown in Figures 1 and 2 consists of, only by way of non-limiting example, conveying the aggregates 1 scattered on a conveyor belt on which there are arranged application means applying the first polymer layer 2 on the aggregates 1.
  • Said impregnated aggregates 1 are then introduced in a tank containing said granular elastomer material 3.
  • a plurality of granules is randomly adhered to the outer face of each aggregate 1 because the first polymer layer 2 has still not solidified.
  • Said aggregates 1 are then extracted from said tank, and the first polymer layer 2 is then solidified.
  • Said process will depend on the selected polymer, and may include steps of timed drying, heat drying, or application of a reactive component. This step can optionally be followed by the application and solidification of the second polymer layer 4.
  • the production process can consist of, by way of non-limiting example, a step of mixing the granular elastomer material 3 with the polymer material, for then pouring the mixture on a flush grid conveyor belt conveying the aggregates 1, the first polymer layer 2 and the elastomer material 3, thereby being applied simultaneously to proceed to the solidification thereof and to the optional application of the second polymer layer 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Railway Tracks (AREA)
EP14856708.4A 2013-10-23 2014-10-23 Ballast and method for producing same Active EP3061867B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14856708T PL3061867T3 (pl) 2013-10-23 2014-10-23 Podsypka i sposób jej wytwarzania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201331557A ES2536584B1 (es) 2013-10-23 2013-10-23 Balasto desagregado con durabilidad y resistencia a la fragmentación mejoradas y procedimiento de obtención del mismo
PCT/ES2014/070798 WO2015059335A1 (es) 2013-10-23 2014-10-23 Balasto desagregado con durabilidad y resistencia a la fragmentación mejoradas y procedimiento de obtención del mismo

Publications (3)

Publication Number Publication Date
EP3061867A1 EP3061867A1 (en) 2016-08-31
EP3061867A4 EP3061867A4 (en) 2017-06-21
EP3061867B1 true EP3061867B1 (en) 2019-06-12

Family

ID=52992315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14856708.4A Active EP3061867B1 (en) 2013-10-23 2014-10-23 Ballast and method for producing same

Country Status (6)

Country Link
EP (1) EP3061867B1 (pl)
BR (1) BR112016009134B1 (pl)
ES (2) ES2536584B1 (pl)
PL (1) PL3061867T3 (pl)
PT (1) PT3061867T (pl)
WO (1) WO2015059335A1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2015377B1 (en) * 2015-08-31 2017-03-20 Dura Vermeer Divisie Infra B V PERS comprising coated particles.
KR102307449B1 (ko) * 2019-04-11 2021-10-05 한국철도기술연구원 자갈궤도용 고기능성 자갈
DE102019206841A1 (de) * 2019-05-10 2020-11-12 Jörg Frenzel Verfahren zur Imprägnierung und Weiterverarbeitung von Schüttgut

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4961805A (pl) * 1972-10-17 1974-06-15
CH655526B (pl) * 1983-10-14 1986-04-30
CH670269A5 (pl) * 1986-04-16 1989-05-31 Luginbuehl Ag Geb
JPH07292603A (ja) * 1994-04-27 1995-11-07 Kowa Kasei Kk 人工道床砕石
DE19632639A1 (de) * 1996-08-13 1998-02-19 Klaus Dieter Ihle Verfahren zur Oberflächenstabilisierung von Schotterbetten und anderen Schüttgütern im Bahn-, Straßen- und Wegebau
JPH10279340A (ja) * 1997-03-31 1998-10-20 West Japan Railway Co フォームドアスファルトによる軌道用材料及び軌道並びにその製造方法及び施工方法
AT405424B (de) * 1997-08-12 1999-08-25 Porr Allg Bauges Schotterloser oberbau mit schalldämmelementen
FR2770235A1 (fr) * 1997-10-23 1999-04-30 Et L Entretien Des Routes Sa P Structure stabilisee, notamment de type ballast, et procede de stabilisation d'une telle structure
JP2002326225A (ja) * 2001-05-01 2002-11-12 Misawa Toyo Co Ltd ゴムチップ、及びゴムチップの製造方法
JP4955329B2 (ja) * 2006-07-13 2012-06-20 公益財団法人鉄道総合技術研究所 噴泥防止方法
DE102007053146A1 (de) 2006-11-11 2008-05-15 Wilfried Bonewitz Fahrweg für Schienenfahrzeuge
ES2356964B1 (es) * 2008-02-11 2011-11-29 Pedro González Requejo Balasto artificial para infraestructuras ferroviarias.
NO334593B1 (no) * 2009-04-17 2014-04-14 Sopekosten As Framgangsmåte for framstilling av et fugemateriale, ei limfuge og et dekke samt et fugemateriale for anvendelse i limfuge og som dekkemateriale
US9068299B2 (en) * 2009-09-11 2015-06-30 Peter Barend Hopperus-Buma Tough, water-permeable paver
WO2011131621A1 (en) * 2010-04-21 2011-10-27 Bayer Materialscience Ag A polyurethane ballast layer, the method for preparing the same and the use thereof
RU2447220C1 (ru) * 2010-12-28 2012-04-10 Открытое Акционерное Общество "Российские Железные Дороги" Способ нанесения полимерных покрытий на балластный слой
RU2475580C2 (ru) * 2011-04-12 2013-02-20 Государственное образовательное учреждение высшего профессионального образования Иркутский государственный университет путей сообщения (ИрГУПС (ИрИИТ)) Балластная призма для скоростных грузонапряженных участков бесстыкового железнодорожного пути
WO2013120059A1 (en) * 2012-02-10 2013-08-15 Glenn Robinson Railway stone ballast and related systems and methods

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
BR112016009134A2 (pt) 2017-08-01
BR112016009134B1 (pt) 2021-12-14
ES2739642T3 (es) 2020-02-03
PL3061867T3 (pl) 2019-12-31
PT3061867T (pt) 2019-09-10
ES2739642T8 (es) 2020-06-25
WO2015059335A1 (es) 2015-04-30
ES2536584A1 (es) 2015-05-26
ES2536584B1 (es) 2016-03-01
EP3061867A4 (en) 2017-06-21
EP3061867A1 (en) 2016-08-31

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