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EP2730699A1 - Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée - Google Patents

Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée Download PDF

Info

Publication number
EP2730699A1
EP2730699A1 EP12192106.8A EP12192106A EP2730699A1 EP 2730699 A1 EP2730699 A1 EP 2730699A1 EP 12192106 A EP12192106 A EP 12192106A EP 2730699 A1 EP2730699 A1 EP 2730699A1
Authority
EP
European Patent Office
Prior art keywords
cover
ballast bed
rail
foaming agent
foaming
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Withdrawn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
EP12192106.8A
Other languages
German (de)
English (en)
Inventor
Dr. Thorsten Erwe
Thomas Gross
Dr. Thomas Kleiner
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.)
Covestro Deutschland AG
Original Assignee
Bayer MaterialScience AG
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 Bayer MaterialScience AG filed Critical Bayer MaterialScience AG
Priority to EP12192106.8A priority Critical patent/EP2730699A1/fr
Priority to DK13789290.7T priority patent/DK2917410T3/en
Priority to US14/441,015 priority patent/US9822491B2/en
Priority to CN201380058617.2A priority patent/CN104769184B/zh
Priority to PCT/EP2013/073361 priority patent/WO2014072460A1/fr
Priority to EP13789290.7A priority patent/EP2917410B1/fr
Publication of EP2730699A1 publication Critical patent/EP2730699A1/fr
Withdrawn legal-status Critical Current

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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
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/02—Placing the ballast; Making ballastway; Redistributing ballasting material; Machines or devices therefor; Levelling means
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/03—Injecting, mixing or spraying additives into or onto ballast or underground

Definitions

  • the present invention relates to a method for foaming a ballast bed of a railway track system, with the aid of which the ballast bed of a railway track system can be solidified with a sufficient elasticity.
  • the ballast bed of a railway track For example, to stabilize the ballast bed of a railway track and to be able to remove higher loads EP 1 619 305 B1 known to foam the voids of a ballast bed of a railway track with polyurethane (PU).
  • PU polyurethane
  • the educts isocyanate, polyol and additives are mixed as foaming agent and introduced into the cavities of the ballast bed, where they react to polyurethane foam.
  • the ballast bed is partially cleared (“dumped"), for example by removing 15 cm to 20 cm of the ballast bed inside the sleeper compartment.
  • the evacuated sleeper compartment is filled again with tufa bricks to a nominal operating height of the ballast bed in the sleeper compartment in regular rail traffic operation so that any rising foam from the depth is covered by the later fender to the nominal operating height.
  • the top of the ballast bed is positioned at a height above a gravitationally oriented underside of the sleepers, with the top of the ballast layer located just below the top of the threshold.
  • a method for foaming a ballast bed of a railroad track system having sleepers resting on the ballast bed and rails resting on the sleepers, in which the rails are covered at least in a partial area along a region of the ballast bed to be foamed and a foaming agent is introduced into the railroad bed Ballast bed is introduced while the rails are covered, the ballast bed in a threshold of two subsequent threshold sleeper compartment in the opposite direction of gravity facing top and the ballast bed is piled up so that the top of the ballast bed is positioned at a height above a direction of gravity in the underside of the threshold.
  • the top of the ballast bed positioned at a height above a bottom of the sill pointing in the direction of gravity is thus positioned at the nominal operating height of the ballast bed.
  • the knowledge is exploited that, contrary to the previous assumption, it is possible to foam the ballast bed in such a way that the resulting foam, in particular of polyurethane (PU), remains within the ballast bed and does not swell out of the ballast bed and contaminate the rails.
  • PU polyurethane
  • the aid of at least one suitably selected catalyst in the educt mixture of the foaming agent to delay the formation of a blowing agent, in particular CO 2 , to such an extent that the substantially liquid foaming agent can flow from the top of the ballast bed into the cavities of the ballast bed before a decisive chemical reaction takes place and the solidified foam is formed.
  • a dumped sleeper compartment is not required for this purpose, so that the starting materials and / or the foam can be applied to an unchecked ballast bed.
  • the steps can Auskoffern omitted before foaming and filling the ballast bed after foaming, whereby the total duration of a construction site, for example, for new construction and / or renovation of a track section, can be significantly reduced.
  • ballast bed can be sprayed with the foaming agent by the covered rails, it is not necessary to insert a distributor pipe in the ballast bed for introducing the foaming agent. This accelerates the foaming of the ballast bed and in particular allows a continuous operation during foaming of the ballast bed.
  • the ballast bed is formed in particular by an irregular accumulation of sharp-edged ballast stones, wherein the geometric shape and / or the dimensions of the ballast stones can scatter in comparatively large tolerance ranges.
  • the ballast bed is in the direction of travel in Cross-section in particular designed substantially trapezoidal with laterally sloping slope surfaces.
  • the ballast bed can rest on a substrate ("planum"), wherein in particular between the subgrade and the ballast bed drainage, such as a drainage mat, for the removal of liquids, especially rainwater, may be provided from the ballast bed.
  • the sleepers On the ballast bed, the sleepers may rest, on which in turn the rails rest in a distance corresponding to the track rail of the intended rail vehicle.
  • the sleepers may be slightly embedded in the ballast bed so that not only the bottom but also the side surfaces of the sleepers may be in contact with the ballast bed.
  • the rails may be fastened to the sleepers by means of fasteners, in particular Vossloh clamps.
  • the foaming agent is in particular a mixture of a reactive mixture, which contains in particular isocyanate and polyol, wherein the mixture may additionally contain at least one catalyst and / or additional blowing agent.
  • the blowing agent in particular CO 2
  • the foaming agent may further contain additives which improve, for example, durability and / or handleability.
  • the foaming agent is environmentally compatible, preferably substantially free of amines.
  • the vertical positioning of the upper surface of the ballast bed in the sleeper compartment substantially corresponds to the nominal operating height of the ballast bed in the sleeper compartment in regular rail traffic operation.
  • the ballast bed is thereby within the sleeper compartment already during the foaming in its designated final state, so that a previous clearing of the sleeper compartment and / or a subsequent filling of the sleeper compartment with ballast stones can be completely eliminated.
  • the operating height of the ballast bed can in particular extend to a rail underside of the rail pointing in the direction of gravity or have a distance d to the rail underside of 0.5 cm ⁇ d ⁇ 10 cm.
  • the foaming agent is applied at an altitude above a running surface of the rail from an outlet, wherein in particular the height level for foaming of two subsequent threshold compartments is kept substantially constant.
  • the foaming agent can thereby be applied to the ballast bed with and / or without a displacement of the at least one outlet relative to a rail vehicle having the at least one outlet, for example by leakage and / or spraying.
  • the outlet may be movable relative to a rail vehicle having the outlet in a longitudinal direction and / or a transverse direction, wherein the at least one outlet may be movably formed beyond one end of the sills in the transverse direction.
  • the outlet by a short with a mixing head form a pipe piece or nozzle piece connected to mix the components of the foaming agent, so that longer distances for dispensing the foaming agent are avoided. The risk of clogging the outlet is thereby reduced.
  • At least the rail and / or the threshold is covered with at least one beveled cover aligned with respect to the direction of gravity.
  • the cover may cover one or both rails and / or cover one or both adjacent to a threshold compartment sleepers.
  • the cover may be formed, for example, in the form of a cover plate.
  • the foaming agent may drain on the cover and pass from the rail and / or the threshold away to the ballast bed. Contamination of the rail and / or the threshold is thereby avoided, whereby the otherwise meeting the rail and / or the threshold foaming agent for foaming the ballast bed, in particular in the vicinity of the rail, preferably below the rail, can be used.
  • the foaming agent can be applied substantially evenly, in particular, to the railway track system, wherein it can nevertheless be ensured that sufficient foaming agent for foaming the ballast bed can be introduced in the hard-to-reach area of the ballast bed below the rail.
  • the rail and / or the threshold is covered by a cover, wherein the cover has a first cover cover plate and a second cover connected at an angle with the first cover.
  • the cover may cover the rail and / or the threshold comparable to a gabled roof, wherein it is also possible that the first cover are connected to the second cover indirectly via a substantially horizontally oriented intermediate piece with each other to reduce the vertical extent of the cover ,
  • the cover and / or the cover may be formed like a frame, wherein the frame-shaped cover and / or cover the rails and the thresholds of a sleeper compartment, on which the foaming agent is applied, can cover.
  • a lateral slippage of the cover plates can be avoided by the rail.
  • the covers can be placed on the ballast bed and / or clamp the rail between the two cover plate due to their own weight. The cover can thereby have sufficient stability, so that the pressure of the impacting on the cover blowing agent does not push the cover of the rail.
  • the cover and / or the cover at least one guide for continuously carrying the cover and / or the cover on the rail.
  • the guide may be a rail-mounted guide that allows accurate positioning of the cover and / or the covers relative to the rails.
  • the guide can be designed, for example, in the form of a frame for placement on the rails, and can be rollers, Have wheels, and / or sliding shoes for contacting the rail or rails. The positioning of the cover and / or the cover in the direction of travel can be defined defined.
  • the foaming agent is delivered bevelled in the direction of travel, so that the foaming agent with a force component in the direction of travel or against the direction of travel impinges on the cover and / or the cover and thereby the cover and / or the cover to be movable in a longitudinal direction
  • the cover and / or the cover may be formed like a frame, wherein the frame-shaped cover of covers and at least one intermediate piece, for example as an open frame, may be formed.
  • the frame-shaped cover and / or cover cover the rails and the thresholds of a sleeper compartment to which the foaming agent is to be applied.
  • a continuous entrainment of the cover and / or the cover along the rails can be made possible, whereby a continuous application of the reaction mixture can be made possible.
  • the cover and / or the cover on a Abperlstoff for rinsing of foaming agent wherein the Abperlstoff is designed in particular as a coating, wherein preferably a plurality of superimposed Abziehfolien each provided with the Abperlstoff coating.
  • the Abperlstoff may for example have a comparable to the lotus plant configured microstructure, resulting in a lotus-like Abperlef fect.
  • a plurality of peel-off films, which are interconnected via a removable adhesive layer, may be provided, which are each provided with the bead-off agent. After use, the uppermost release liner can be removed, so that the underlying release liner or the underlying Abperlstoff can be used for further use.
  • the cover and / or the cover can be protected from contamination by the foaming agent.
  • the cover and / or the cover can be reused several times. For example, it is possible to first cover a rail with the cover and / or the cover. After the foaming agent has been applied in this area, the cover and / or the cover can be resumed and used to cover another area of the rail while still applying foaming agent in a region following the previous area for which another set of covers and / or covers is used. This can cover a large distance of the rails during foaming with a low material usage for covers and / or covers become.
  • the cover plate can be cleaned by compressed air, in particular a compressed air pressure surge, possibly still adhering reaction mixture.
  • the foaming agent is introduced into the ballast bed far enough that, after foaming of the foaming agent, the resulting foam remains essentially completely below the upper side of the ballast bed in the sleeper compartment.
  • the start and the end of the foaming process can be adjusted accordingly so that a desired height of rise of the resulting foam can be provided such that the foam does not extend beyond the top of the ballast bed. An unnecessary use of material of the foaming agent is avoided.
  • the delivery of the foaming agent is interruptible at a transition via a rail and / or from a threshold compartment to a subsequent threshold compartment.
  • An interruption of the application of the foaming agent can be provided, for example, in an application of the foaming agent without a cover and / or cover.
  • the application of the foaming agent can be interrupted when the outlet is guided over a rail and / or threshold.
  • the delivery of the foaming agent is carried out by a reciprocating movement of an outlet in a transverse and / or longitudinal direction for applying the foaming agent, in particular transversely to the direction of travel of the railway track systems, wherein the delivery of the foaming agent can be interrupted in the rail.
  • the outlet may be led in a U-shape around the end of the sleeper, thereby improving the bedding of the sleepers in the ballast bed. The risk of contamination of the rail is thereby reduced.
  • the cover and / or cover is brought into contact with a lesser mass of foaming agent, thereby increasing the service life of the covers and / or covers.
  • the foaming agent is applied by a rail vehicle traveling on the rails of the railway track system, wherein the rail vehicle for foaming the ballast bed of the railway track system moves forward substantially continuously, in particular at a constant driving speed.
  • the at least one outlet is movable independently of a movement of the rail vehicle in the longitudinal direction and the transverse direction with respect to the direction of travel of the rail vehicle.
  • the at least one outlet can be moved substantially parallel to the threshold during a movement of the rail vehicle, in particular by a simultaneous movement in the longitudinal direction, which is coordinated with the speed of the rail vehicle and transverse direction.
  • railway track system 10 shown has a ballast bed 12, on which several sleepers 14 rest.
  • the sleepers 14 carry two in the direction of travel, in the longitudinal direction X, aligned rails 16, which are arranged spaced from each other according to the intended track width. Between two sleepers 14 and the two rails 16, a sleeper compartment 18 is formed.
  • the rail 16 may be covered during a foaming of the ballast bed 12 with a cover 20.
  • the cover 20 has in the illustrated embodiment, a first cover 22 and a second cover 24, which are connected to each other at an angle gable.
  • the cover 20 has at least one intermediate piece 38, which is arranged in the transverse direction Y, substantially perpendicular to the rail 16, on the covers 22, 24.
  • the intermediate piece 38 may be designed in the form of a one-sided cover with a slope towards the sleeper compartment.
  • the intermediate piece 38 may be formed in the form of a roof with two inclinations.
  • the cover 20 spaced to a top 26 of the ballast bed 12 in the region of the threshold compartment 18.
  • the cover 20 can be centered by the side of a rail head 28 of the rail 16 adjacent cover 22, 24 and jammed by its own weight with the rail 16. A trained by the rail head 28 facing the direction of gravity facing running surface 30 of the rail 16 is thereby substantially completely covered. By the intermediate piece 38, the threshold 14 is covered.
  • a foaming agent is applied from a mixing head 32, which is provided in a transverse direction Y via an outlet 34 at a height level provided in the direction of gravity above the running surface 30 of the rail 16 and optionally above the cover 20, the substantially liquid foaming agent may be applied on the covers 22, 24 of the cover 20 and the intermediate piece 38 of the running surface 30 of the rail 16 and the threshold 14 flow away and instead get to the ballast bed 12.
  • the sleeper compartment 18 is bagged so that the upper side 26 of the ballast bed 12 in the region of the sleeper compartment 18 can already correspond to the nominal operating height of the ballast bed 12 in regular rail operation.
  • the upper side 26 of the ballast bed 12 in the region of the sleeper compartment 18 can thereby be at a height level, which is provided in the direction of gravity above an underside 36 of the sleeper 14 facing the planum.
  • the cover 20 at least one arranged transversely to the direction of the intermediate piece 38.
  • the intermediate pieces 38 may be arranged in the direction of travel or against the direction of travel on the covers 22, 24 and at least partially protect the threshold (not shown) and at least partially a fastening means 40, for example in the form of a Vossloh clamp, from contamination by the foaming agent.
  • the rail 16 can be protected in a movement of the mixing head 34 in the transverse direction Y from contamination.
  • the cover 20 in Fig. 4 has covers 22,24 and two spacers 38, wherein the intermediate pieces 38 have at least the width of the thresholds.
  • the cover 20 has a rail-related guide 42 for continuously carrying the cover 20 in the form of rollers which roll on the rails 16 in the longitudinal direction X.
  • the rollers 42 are connected via a linkage 44, on which the cover 20 rests.
  • the mixing head 32 can be moved both in the transverse and in the longitudinal direction X relative to the rail vehicle (not shown) and / or the cover 20. Thereby, in a continuous movement of the rail vehicle and / or the cover 20 of the mixing head 32 are moved substantially parallel to the clamps 14 for applying the foaming agent in the threshold compartment 18.
  • the mixing head 32 can perform about a rail 16 a pendulum movement in the transverse direction Y, wherein the pendulum movement can end around the threshold 14 around.
  • Fig. 5a shows a arranged on two rails 16 cover 20 with the first and second covers 22,24 and two spacers 38.
  • the cover 20 is in Fig. 5b shown on a railway track system 10, wherein two mixing heads 32, one for each rail 16, are provided.
  • the mixing heads 32 can be moved independently of one another both in the longitudinal direction X and in the transverse direction Y. In a continuous movement of the cover 20 in the longitudinal direction X, the mixing heads 32 can each oscillate about a rail 16 and thereby follow a U-shaped travel path 46 with components in the longitudinal direction X and transverse direction Y, wherein the travel path 46 respectively to the outside end of the thresholds 14th can be guided.
  • the foaming agent can be introduced into the ballast bed 12 predominantly in the region of the rails 16.
  • FIG Fig. 6 An arrangement of two cover hoods 20, each of which may have one or two mixing heads 32, is shown in FIG Fig. 6 shown.
  • the foaming agent 48 can be applied to the ballast bed 12, in particular in the threshold compartments 18.
  • the covers 20 are continuously movable by guides 42 along the rails 16 in the longitudinal direction X.
  • the foaming agent 48 can be applied continuously, the rails 16 and the thresholds 14 are protected by the covers 20 from contamination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Railway Tracks (AREA)
EP12192106.8A 2012-11-09 2012-11-09 Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée Withdrawn EP2730699A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP12192106.8A EP2730699A1 (fr) 2012-11-09 2012-11-09 Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée
DK13789290.7T DK2917410T3 (en) 2012-11-09 2013-11-08 PROCEDURE FOR FOAMING A BALLA SUPPORT IN A RAILWAY SYSTEM
US14/441,015 US9822491B2 (en) 2012-11-09 2013-11-08 Method for covering a ballast bed with foam in a railway track system
CN201380058617.2A CN104769184B (zh) 2012-11-09 2013-11-08 使铁路轨道的道床形成泡沫的方法
PCT/EP2013/073361 WO2014072460A1 (fr) 2012-11-09 2013-11-08 Procédé de protection par la mousse d'un lit de ballast d'une voie ferrée
EP13789290.7A EP2917410B1 (fr) 2012-11-09 2013-11-08 Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12192106.8A EP2730699A1 (fr) 2012-11-09 2012-11-09 Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée

Publications (1)

Publication Number Publication Date
EP2730699A1 true EP2730699A1 (fr) 2014-05-14

Family

ID=47172518

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12192106.8A Withdrawn EP2730699A1 (fr) 2012-11-09 2012-11-09 Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée
EP13789290.7A Not-in-force EP2917410B1 (fr) 2012-11-09 2013-11-08 Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13789290.7A Not-in-force EP2917410B1 (fr) 2012-11-09 2013-11-08 Procédé destiné à transformer en mousse un lit de ballast d'une installation de rails de voie ferrée

Country Status (5)

Country Link
US (1) US9822491B2 (fr)
EP (2) EP2730699A1 (fr)
CN (1) CN104769184B (fr)
DK (1) DK2917410T3 (fr)
WO (1) WO2014072460A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108131162A (zh) * 2018-02-11 2018-06-08 中铁二院工程集团有限责任公司 一种隧道排水装置及隧道整体道床

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2751337B1 (fr) * 2011-09-01 2017-03-15 Covestro Deutschland AG Procédé de fabrication de corps de ballast
CN111254761B (zh) * 2020-03-18 2024-10-29 成都东日瑞姆机械有限公司 用于聚氨酯道床固化的免烘干多枪头双流道浇注设备

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DE19929283A1 (de) * 1999-06-25 2000-12-28 Gudehus Gerd Sanierung von Gleisbettwellen durch Injektion
WO2007090901A2 (fr) * 2006-02-10 2007-08-16 Msb-Management Gmbh Procédé de production d'une superstructure de voie soumise à un moussage partiel
WO2008128665A1 (fr) * 2007-04-24 2008-10-30 Hennecke Gmbh Procédé et dispositif pour remplir de mousse des lits de ballast
EP1619305B1 (fr) 2004-07-23 2009-05-06 MSB-Management GmbH Assiette de voie partiellement injectée avec une mousse et procédé pour l'exécution de l'assiette
WO2009068169A1 (fr) * 2007-11-27 2009-06-04 Hennecke Gmbh Procédé de consolidation d'un lit de ballast et dispositif de mise en oeuvre de ce procédé
WO2011131621A1 (fr) * 2010-04-21 2011-10-27 Bayer Materialscience Ag Couche de ballast de polyuréthane, son procédé de préparation et son utilisation

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JPH0718608A (ja) 1993-06-30 1995-01-20 Railway Technical Res Inst 軌道の道床砕石飛散防止方法
CN102191730B (zh) 2010-03-09 2015-08-26 拜耳材料科技(中国)有限公司 聚氨酯弹性体道砟垫及其制备方法
DE102010016733B4 (de) 2010-04-30 2012-09-20 Bayer Materialscience Aktiengesellschaft Konditioniervorrichtung und Verfahren zum Trocknen und Temperieren eines Schotterbetts
DE102011053368A1 (de) 2011-09-07 2013-03-07 Bayer Materialscience Aktiengesellschaft Raupenkette, Konditioniervorrichtung, Verfahren zum Temperieren eines Schotterbetts sowie Verwendung eines Schaumstoffs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19929283A1 (de) * 1999-06-25 2000-12-28 Gudehus Gerd Sanierung von Gleisbettwellen durch Injektion
EP1619305B1 (fr) 2004-07-23 2009-05-06 MSB-Management GmbH Assiette de voie partiellement injectée avec une mousse et procédé pour l'exécution de l'assiette
WO2007090901A2 (fr) * 2006-02-10 2007-08-16 Msb-Management Gmbh Procédé de production d'une superstructure de voie soumise à un moussage partiel
WO2008128665A1 (fr) * 2007-04-24 2008-10-30 Hennecke Gmbh Procédé et dispositif pour remplir de mousse des lits de ballast
WO2009068169A1 (fr) * 2007-11-27 2009-06-04 Hennecke Gmbh Procédé de consolidation d'un lit de ballast et dispositif de mise en oeuvre de ce procédé
WO2011131621A1 (fr) * 2010-04-21 2011-10-27 Bayer Materialscience Ag Couche de ballast de polyuréthane, son procédé de préparation et son utilisation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108131162A (zh) * 2018-02-11 2018-06-08 中铁二院工程集团有限责任公司 一种隧道排水装置及隧道整体道床

Also Published As

Publication number Publication date
CN104769184A (zh) 2015-07-08
US9822491B2 (en) 2017-11-21
US20150292167A1 (en) 2015-10-15
EP2917410A1 (fr) 2015-09-16
EP2917410B1 (fr) 2017-12-27
WO2014072460A1 (fr) 2014-05-15
CN104769184B (zh) 2017-10-13
DK2917410T3 (en) 2018-04-16

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