EP1025312B1 - Stabilisiertes gefüge, insbesondere vom typ ballast, und verfahren zur stabilisierung eines solchen gefüges - Google Patents

Stabilisiertes gefüge, insbesondere vom typ ballast, und verfahren zur stabilisierung eines solchen gefüges Download PDF

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Publication number
EP1025312B1
EP1025312B1 EP98950178A EP98950178A EP1025312B1 EP 1025312 B1 EP1025312 B1 EP 1025312B1 EP 98950178 A EP98950178 A EP 98950178A EP 98950178 A EP98950178 A EP 98950178A EP 1025312 B1 EP1025312 B1 EP 1025312B1
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EP
European Patent Office
Prior art keywords
fibres
binder
spreading
fibers
mineral elements
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.)
Expired - Lifetime
Application number
EP98950178A
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English (en)
French (fr)
Other versions
EP1025312A1 (de
Inventor
Michel Dunand
Bernard Faure
Jacques Itty
Alain Le Coroller
Jean-Paul Michaut
Guy Lecuyer
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.)
Colas SA
Original Assignee
Colas SA
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Publication date
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Publication of EP1025312B1 publication Critical patent/EP1025312B1/de
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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
    • 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
    • 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
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00—Foundations for pavings
    • E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/202—Securing of slopes or inclines with flexible securing means
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0051—Including fibers

Definitions

  • the present invention relates to a stabilized structure comprising separate individual mineral elements and a process for stabilizing such a structure using a complex stabilization.
  • Structures with mineral elements are known in various fields such as, for example, railway construction and road construction.
  • mineral or stony elements for example pebbles from crushed rocks magmatic and some metamorphic rocks.
  • These stony elements can in particular be arranged so as to forming a bed of stones intended to constitute the ballast of a track railroad or a base layer in road construction.
  • They may be small stones, susceptible to land on the running table of the rails, and thus be crushed by the wheels, causing fingerprints.
  • a solution to prevent the lifting of stones forming the ballast of a railway is proposed by the document WO-A-9108056.
  • a multi-component resin is used that we spread on the ballast to get a partial covering of the stones forming the ballast.
  • the characteristics of the binder are chosen so that it coats the stones from the ballast partially and over a shallow depth of the ballast, so that the upper stones are attached to each other to others without compromising the drainability of the ballast.
  • the object of the invention is to find a solution allowing to remedy the drawbacks of structures comprising stony elements of different sizes, simply, little expensive and fast and, at the same time, retaining the properties essentials of the ballasted structure, such as, for example its ability to distribute loads, its ability to drain and rapid drainage.
  • the structure comprises a complex of stabilization consisting of an added complex comprising a binder and fibers, and ensuring the maintenance elements of the structure.
  • the mineral elements of surface are partially coated by the reported complex, which ensures a link between them and their immobilization one by compared to others, without affecting their ability to drain and percolation.
  • Patent protection does not extend to modes of realization of the structure according to Figures 3 and 4.
  • the channels for railways are made up of rails fixed on sleepers, themselves immobilized on a ballast 1 composed of stony elements, such as pebbles 2, from rock crushing magmatic or metamorphic, and arranged between the rails and on either side of these.
  • ballast 1 has a complex stabilization 3 consisting of an attached coating which forms a sort of covering net for said pebbles 2 of the layers without affecting their drainage and percolation.
  • This covering net ensures a connection between the pebbles and, consequently, their immobilization in relation to to others.
  • the stabilization complex 3 of the ballast 1 is constituted by a binder 4 to which fibers 5 are incorporated.
  • the binder 4 can be a pure or modified bitumen emulsion or an anhydrous binder.
  • the fibers 5 integrated into the binder 4 to form the stabilization complex 3 intended to be attached to ballast 1 are filiform and of length l at least equal to the distance separating two successive stones 2, to form a link between them. All of these links, obtained from stabilization means comprising fibers 51 hereinafter called “long fibers” and binder 4, is arranged randomly and according to a dosage making it possible to carry out a any shape mesh capable of joining the pebbles of surface 2 between them, while allowing the drainage of water from rain through the top layer of pebbles 2, then their lower layers.
  • ballast 1 has a complex of stabilization 31 which is constituted by a binder 4 in which are integrated fibers 52 hereinafter called "short fibers".
  • the length m short fibers 52 and the dosage of these fibers during their application are chosen so as to obtain a random blockage part of the gaps between the stones.
  • the binder is retained during its application and forms a mesh of any shape similar to the first embodiment.
  • the long fibers 51 may have a length l ranging from 10 mm to 200 mm
  • the short fibers 52 have a length m less than 1 mm and are in particular micronized fibers.
  • the preferred lengths of long fibers 51 are 25, 50, 90 and 130 mm, the particularly advantageous length being located between 25 and 60 mm.
  • the life cycle of the maintenance-free ballast can go up to three or even five years, whereas with ballasts traditional, this life cycle does not exceed one year in the most severe conditions of use, for example those of high speed lines.
  • the stabilization coating has the ability to be easily destroyed during manual tamping operations or ballast mechanics, which keeps the ballast its recyclable material.
  • the stabilization coating also allows maintain a ballasted layer behavior capable of withstand the vibrations in the passage of train movements. he remains flexible enough to follow the deformations of the support and accept a low amplitude sag.
  • the stabilization complex 3 of the ballast 1 comprises, for example, an emulsion of pure or modified bitumen whose dosage is between 1500 and 1800 g / m 2 or an anhydrous binder whose the dosage is between 800 and 1200 g / m 2 , and to which emulsion or to which anhydrous binder, long fibers 51 are incorporated, the dosage of which is between 50 and 600 g / m 2 .
  • a hydrocarbon binder based on bitumen
  • suitable additives for example: SBS type polymers
  • This type of binder obtained for example by addition or not 1.5 to 3% SBS polymer in a penetrating bitumen given has a viscosity depending on the temperature at the time of spreading.
  • Full-scale experiments have shown that a viscosity obtained by spreading the binder defined above to a temperature between 40 ° C and 90 ° C allowed bonding ballast per point on the surface and penetration over a thickness from 1 to 3 ballast stones.
  • the temperature drops in a time between 0 s and 600 s at a value ⁇ 25 ° C, which allows point bonding of the ballast, irreversible at room temperature, sufficient for prevent pebbles from flying away when trains pass, but weak enough for a powerful mechanical action by vibration for example, allows to restore independence mechanics of each pebble and therefore to rework the geometry of track by ballast stuffing.
  • the tensile stress required to separate two pebbles from the ballast thus glued is between 50 g / cm 2 and 2000 g / cm 2 at 30 minutes, which is more than enough not to interfere tamping operations.
  • the invention also relates to a method using works a stabilization complex to obtain a structure such that it has just been described.
  • This process includes a step consisting in forming a kind of partial covering net for mineral elements of the upper layers of the structure to stabilize.
  • very long fibers 51 are cut in situ by through a chopper type fiber cutter a rotating cylinder fitted with peripheral chopping blades, fed by a loading hopper, such a cutter being associated with a bitumen spreader 4 arranged upstream or downstream of said cutter, on the same running gear.
  • precut fibers are brought to the site to be put implemented before or after the spreading of the bitumen 4, by spraying with a manually operated spray gun or mechanically.
  • the process can be carried out in the temperature range from + 5 ° C to + 40 ° C. Treatment can be carried out on a ballast wet using a bitumen emulsion binder. The effectiveness of process is obtained whatever the climatic conditions after implementation within a maximum of 24 hours.
  • the invention has been presented as relating to a structure stabilized with individual mineral elements, separate, comprising a stabilization complex consisting of a complex reported that partially covers the mineral elements of surface of this structure and which comprises a binder and fibers.
  • the stabilization complex consists of a binder alone or, for the least, by an added stabilization complex not comprising no fibers.
  • This principle is represented schematically in Figure 4. In this Figure, we see that the elements of upper layers of the structure to be stabilized are "glued" one
  • the detailed illustrative description relates to the stabilization of a railway ballast type structure. It must be understood, however, that the invention is not limited to such an application and can be used to stabilize any structure stony comprising stony elements. The skilled person can, through routine testing and using the lessons of the present description, determine in each case according to the nature and dimensions of the structure to be stabilized, corresponding characteristics of the binder and of the fibers.
  • a reservoir structure roadway includes, in addition to the ground support 11 on which it is made, a form layer 12, a foundation layer 13, a base layer 14 and a layer surface 15.
  • the support soil 11, the form layer, the layer foundation and the base layer are separated from each other by interfaces 16, 17 and 18 produced by a geotextile or a geomembrane.
  • Stabilization complex 3 is applied to the layers base of mineral elements of the base layer 14.
  • the Figure 5 shows this complex according to the embodiment shown in and described with reference to Figure 3.
  • the stabilized structure can be used in the field of road application using dusting microfibers. These microfibers are only in organic matter and applied, either with pistols or with a ramp. Their main effect is to avoid any object or vehicle entering contact with the newly deposited stabilization complex, paste.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Road Paving Structures (AREA)
  • Railway Tracks (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Discharge Heating (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Claims (10)

  1. Stabilisiertes Gefüge mit mineralischen, getrennten einzelnen Elementen (2) und einem Stabilisierungskomplex (3), der ein Bindemittel (4) und Fasern (5, 51, 52) aufweist, wobei die Fasern in das Bindemittel so integriert sind, dass sie ein Abdeckungsnetz bilden, das die mineralischen Elemente (2) der oberen Schichten teilweise beschichtet, wobei das Abdeckungsnetz eine Verbindung zwischen den mineralischen Elementen und ihre Immobilisierung unter einander ohne Änderung der Kapazität zum schnellen Dränieren und Entleeren des Wassers und Perkolieren des Gefüges gewährleistet, wobei das Bindemittel (4) aus einer Emulsion aus reinem Bitumen, einer modifizierten Bitumenemulsion oder einem wasserlosen Bindemittel besteht und die Fasern eine Länge haben, die mindestens gleich der Entfernung ist, die die beiden aufeinander folgenden mineralischen Elemente trennt.
  2. Gefüge nach Anspruch 1, dadurch gekennzeichnet, dass der Stabilisierungskomplex (3) aus einer reinen oder modifizierten Bitumenemulsion (4) besteht, deren Dosierung zwischen 1500 und 1800 g/m2 beträgt, wobei die Dosierung der Fasern (5) zwischen 50 und 600 g/m2 beträgt.
  3. Gefüge nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Stabilisierungskomplex (3) aus einem wasserlosen Bindemittel (4) besteht, dessen Dosierung zwischen 80 und 1200 g/m2 beträgt, wobei die Dosierung der Fasern (5) zwischen 50 und 600 g/m2 beträgt.
  4. Gefüge nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Fasern (51) eine Länge (1) zwischen 10 und 200 mm haben.
  5. Verfahren zum Erzielen eines Gefüge nach einem der Ansprüche 1 bis 4 unter Verwendung eines Fasern enthaltenden Stabilisierungskomplexes, wobei das Verfahren einen Schritt umfasst, der in der Bildung eines Netzes zum teilweisen Abdecken der mineralischen Elemente der oberen Schichten des Gefüges besteht.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass es einen Schritt umfasst, der in der Ausbreitung eines Filmes aus Bindemittel (4) vor dem Ausbreiten der Fasern besteht.
  7. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass es einen Schritt umfasst, der in der Ausbreitung eines Filmes aus Bindemittel (4) nach dem Ausbreiten der Fasern besteht.
  8. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass das Bindemittel (4) zwischen 800 und 1200 g/m2 für eine Bitumenemulsion und zwischen 500 und 800 g/m2 für ein wasserloses Bindemittel dosiert wird, und dadurch, dass die Fasern (5) zwischen 50 und 600 g/m2 dosiert werden.
  9. Verfahren nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Fasern (5) in situ mittels eines Faserschneiders des Typs "Chopper" geschnitten werden, der von einem Ladebunker versorgt wird, wobei ein solcher Schneider einem Streuer für Bindemittel (4) zugeordnet ist, der dem Schneider auf einem selben Rollengang vor- oder nachgeschaltet angeordnet ist.
  10. Verfahren nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Fasern (5) außerhalb ihrer Verwendungsstelle geschnitten und zur Baustelle verbracht werden, um durch Spritzen mittels einer manuell oder mechanisch betätigbaren Pistole ausgestreut zu werden.
EP98950178A 1997-10-23 1998-10-22 Stabilisiertes gefüge, insbesondere vom typ ballast, und verfahren zur stabilisierung eines solchen gefüges Expired - Lifetime EP1025312B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9713311A FR2770235A1 (fr) 1997-10-23 1997-10-23 Structure stabilisee, notamment de type ballast, et procede de stabilisation d'une telle structure
FR9713311 1997-10-23
PCT/FR1998/002261 WO1999022070A1 (fr) 1997-10-23 1998-10-22 Structure stabilisee, notamment de type ballast et procede de stabilisation d'une telle structure

Publications (2)

Publication Number Publication Date
EP1025312A1 EP1025312A1 (de) 2000-08-09
EP1025312B1 true EP1025312B1 (de) 2004-01-21

Family

ID=9512576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98950178A Expired - Lifetime EP1025312B1 (de) 1997-10-23 1998-10-22 Stabilisiertes gefüge, insbesondere vom typ ballast, und verfahren zur stabilisierung eines solchen gefüges

Country Status (9)

Country Link
EP (1) EP1025312B1 (de)
JP (1) JP2001521081A (de)
KR (1) KR20010031365A (de)
AT (1) ATE258253T1 (de)
CA (1) CA2307133A1 (de)
DE (1) DE69821254T2 (de)
ES (1) ES2167289T3 (de)
FR (1) FR2770235A1 (de)
WO (1) WO1999022070A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007019669A1 (de) * 2007-04-24 2008-11-06 Hennecke Gmbh Verfahren und Vorrichtung zum Ausschäumen von Schotterbetten
ES2536584B1 (es) * 2013-10-23 2016-03-01 Universitat Politècnica De Catalunya Balasto desagregado con durabilidad y resistencia a la fragmentación mejoradas y procedimiento de obtención del mismo
FR3119401B1 (fr) * 2017-03-28 2024-01-12 Fabrice Ferstler Procédé et dispositif pour réaliser un tapis de protection pour une piste de contrôle longeant une voie ferrée
FR3064650B1 (fr) * 2017-03-28 2022-03-11 Fabrice Ferstler Procede et dispositif pour realiser un tapis de protection pour une voie ferree

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2063727A1 (de) * 1970-12-24 1972-08-24 Michelfelder, Gerhard, 8000 München Verfahren zur Stabilisierung eines Schotterbettes
GB1332966A (en) * 1971-12-23 1973-10-10 Phillips Petroleum Co Railroad ballast construction
CH638005A5 (de) * 1978-12-06 1983-08-31 Kibag Ag Verfahren zum herstellen eines schwarzbelages und danach hergestellter schwarzbelag.
SE441938B (sv) * 1980-12-19 1985-11-18 Rockwool Ab Forfarande for framstellning av en tryckhallfast och hogstabil beleggningsmassa for starkt belastade ytor
DE3821963A1 (de) * 1988-06-29 1990-01-11 Karl Reinhard Zeiss Verfahren zur verfestigung von schotterbetten und anderen haufwerkgebilden
FR2636989B1 (fr) * 1988-09-23 1991-11-22 Screg Routes & Travaux Procede de fabrication in situ d'une membrane routiere armee de fibres obtenues par decoupage de fils
ES2053316T3 (es) * 1989-12-02 1994-07-16 Koch Marmorit Gmbh Procedimiento y dispositivo para aplicar resinas de varios componentes y sus aplicaciones.
DE9116773U1 (de) * 1990-07-16 1993-11-18 Werner Zapf Kg, 95448 Bayreuth Wasserdurchlässiges Flächenbefestigungselement und dessen Anwendung
DE4138068C2 (de) * 1991-11-19 1995-08-17 Deutsche Asphalt Gmbh Verfahren zur Verfestigung von aus schüttbaren Materialien hergestellten Baukörpern
DE4214890C2 (de) * 1992-05-07 1998-07-09 Koch Marmorit Gmbh Verwendung eines Verfahrens zur temporären Verfestigung eines Schotterbettes

Also Published As

Publication number Publication date
ES2167289T1 (es) 2002-05-16
EP1025312A1 (de) 2000-08-09
DE69821254T2 (de) 2004-11-18
JP2001521081A (ja) 2001-11-06
FR2770235A1 (fr) 1999-04-30
CA2307133A1 (fr) 1999-05-06
DE69821254D1 (de) 2004-02-26
KR20010031365A (ko) 2001-04-16
ATE258253T1 (de) 2004-02-15
ES2167289T3 (es) 2004-07-16
WO1999022070A1 (fr) 1999-05-06

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