EP0545137A1 - Process for the consolidation of a solidium obtained of bulk material - Google Patents
Process for the consolidation of a solidium obtained of bulk material Download PDFInfo
- Publication number
- EP0545137A1 EP0545137A1 EP92119613A EP92119613A EP0545137A1 EP 0545137 A1 EP0545137 A1 EP 0545137A1 EP 92119613 A EP92119613 A EP 92119613A EP 92119613 A EP92119613 A EP 92119613A EP 0545137 A1 EP0545137 A1 EP 0545137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- binder
- bitumen
- ballast
- treated
- encased
- 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- Withdrawn
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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
-
- 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 invention relates to a method for the solidification of pourable materials, e.g. Ballast, grit and / or slag, manufactured structures, in particular covers of ballastless railway superstructure, the so-called "slab track", or of ballast piles of the classic superstructure, using a thermoplastic bitumen-based binder.
- pourable materials e.g. Ballast, grit and / or slag
- crushed stone, grit, slag and similar such materials in railway construction, hydraulic engineering, road construction and other areas of the building industry as a grain heap in both unbound form, i.e. without the addition of hydraulic binders or binders made of, for example, plastic or bituminous as well to be used in bound form, ie with the addition of such binders.
- ballast pile of the railway superstructure namely the ballast superstructure. This secures the track grate in its position, distributes the wheel loads over the rails, sleepers and the ballast bed in such a way that they are borne permanently and without damage by the substructure, absorbs the loads in a springy or damping manner and reduces noise radiation.
- the threshold fields are filled with bulk materials of suitable grain sizes.
- Such a fine-grained material can, however, be whirled up by the suction force, which is primarily caused by fast-moving passenger trains, ie individual grains of gravel are torn out of their position by the suction and flung up.
- Such gravel swirls can be caused in particular by cold ice in the cold season, when in winter ice loosens from the vehicle floors and hits the gravel surface at high speed.
- Even coarse-grained ballast 25/65 can still be torn out of its position and flung up.
- the object of the invention is now to improve a method of the type mentioned in such a way that the ballast material is brought into a state suitable for later consolidation even before installation, and the material treated with binders is stored for several weeks without gluing and afterwards is still transportable and the desired consolidation is ensured after installation in the road.
- the material is processed in a suitable plant and coated with a film of a thermoplastic binder that is as thick as possible, the coated material is converted into a non-adhesive state by means of a suitable medium and, if appropriate, with the addition of suitable release agents, and the material treated in this way is brought into the building and is thermally treated during and / or after installation.
- the rock and / or slag material treated according to the process described above has the advantage over the known processes described at the outset that there is no premature bonding in the rock material during intermediate storage and transport to the installation site, in particular it can be stored for several weeks without bonding.
- the binder is hot bitumen and the material is heated in an asphalt processing plant of known design, dusted and coated with a thickest possible film of hot bitumen and then the coated material with a cooling medium, e.g. Air or water may be extinguished with the addition of suitable release agents.
- a cooling medium e.g. Air or water may be extinguished with the addition of suitable release agents.
- the built-in material is advantageously heat treated during and / or after installation with hot air devices or infrared radiators.
- cellulose and / or mineral fibers are added to the binder during the coating process. This ensures in particular that the binder coating is given the desired thickness.
- Chemical additives can advantageously be added to the binder. Such additives reduce the flow properties of the binder and in particular prevent dripping when hot.
- the method according to the invention described above can also be used especially in the case of classic ballast track superstructure, that is to say without a solid roadway.
- One from the procedural The track superstructure made of treated ballast can be replanted without further ado, the material surrounded by the thick binder film also guarantees re-gluing.
- the method described above can be used not only in railway construction, but also in hydraulic engineering in the manufacture of bank reinforcements, filter layers and asphalt seals etc.
- the additional application of hot asphalt surfaces also leads immediately to the desired bond.
- the method according to the invention can also be used when installing such materials as stable protective and filter layers on heat-sensitive sealing foils.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Verfestigung von aus schüttbaren Materialien, z.B. Schotter, Splitt und/oder Schlacken, hergestellten Baukörpern, insbesondere von Abdeckungen von schotterlosem Eisenbahnoberbau, der sogenannten "Festen Fahrbahn'', oder von Schotterhaufwerken des klassischen Oberbaus, unter Verwendung eines thermoplastischen Bindemittels auf Bitumenbasis.The invention relates to a method for the solidification of pourable materials, e.g. Ballast, grit and / or slag, manufactured structures, in particular covers of ballastless railway superstructure, the so-called "slab track", or of ballast piles of the classic superstructure, using a thermoplastic bitumen-based binder.
Es ist bekannt, Schotter, Splitte, Schlacken und ähnliche solche Stoffe im Eisenbahnbau, Wasserbau, Straßenbau und auch anderen Bereichen des Bauwesens als Kornhaufwerk in sowohl ungebundener Form, d.h. ohne Zusätze von hydraulischen Bindemitteln oder Bindemitteln aus beispielsweise Kunststoff oder auf bituminöser Basis, als auch in gebundener Form, d.h. mit Zusatz solcher Bindemittel einzusetzen.It is known to use crushed stone, grit, slag and similar such materials in railway construction, hydraulic engineering, road construction and other areas of the building industry as a grain heap in both unbound form, i.e. without the addition of hydraulic binders or binders made of, for example, plastic or bituminous as well to be used in bound form, ie with the addition of such binders.
Das bekannteste Beispiel für eine ungebundene Bauweise ist das Schotterhaufwerk des Eisenbahnoberbaus, nämlich der Schotteroberbau. Dieser sichert den Gleisrost in seiner Lage, verteilt die Radlasten über die Schienen, Schwellen und das Schotterbett so, daß sie vom Unterbau dauerhaft und schadlos ertragen werden, nimmt die Lasten federnd oder dämpfend auf und mindert die Schallabstrahlung.The best-known example of an unbound construction is the ballast pile of the railway superstructure, namely the ballast superstructure. This secures the track grate in its position, distributes the wheel loads over the rails, sleepers and the ballast bed in such a way that they are borne permanently and without damage by the substructure, absorbs the loads in a springy or damping manner and reduces noise radiation.
Dieser bekannte Eisenbahnoberbau hat sich bewährt. Je nach Höhe der Geschwindigkeit und Achslasten verschlechtert sich jedoch die Gleislage, so daß - belastungsabhängig - in Zeitabständen von einigen oder mehreren Jahren die genaue Lage des im Schotter verkeilten Gleisrostes korrigiert, d.h. mittels sogenannter Stopf-/Richtmaschinen wieder hergetellt werden muß. Dieser spezielle Nachteil des Schotterhaufwerks war ein wesentlicher Grund, die sogenannte "Feste Fahrbahn" im Eisenbahnbau zu entwickeln, d.h. der Gleisrost wird nicht mehr auf bzw. in einem Schotterhaufwerk gebettet, sondern auf einem Tragsystem, welches aus Beton und/oder Asphalt hergestellt ist, aufgelagert.This well-known railway superstructure has proven itself. Depending on the level of speed and axle loads, however, the track position deteriorates, so that - depending on the load - the exact position of the track grating wedged in the ballast is corrected at intervals of a few or more years, i.e. must be restored using so-called tamping / straightening machines. This particular disadvantage of the ballast pile was an essential reason to develop the so-called "slab track" in railway construction, i.e. the track grating is no longer placed on or in a ballast pile, but is supported on a support system made of concrete and / or asphalt.
Solche festen Fahrbahnen besitzen aber gegenüber dem Schotteroberbau eine wesentlich höhere Schallemission - man spricht von einer sogenannten "schallharten" Oberfläche. Um diese Schallemission merklich zu reduzieren, werden die Schwellenfelder mit Schüttmaterialien geeigneter Korngrößen ausgefüllt.However, such solid carriageways have a significantly higher noise emission than the ballast track - one speaks of a so-called "reverberant" surface. To significantly reduce this noise emission, the threshold fields are filled with bulk materials of suitable grain sizes.
Ein solches feinkörniges Material kann aber durch die Sogkrätte, welche vor allen Dingen durch schnellfahrende Reisezüge verursacht werden, aufgewirbelt werden, d.h., einzelne Schotterkörner werden von dem Sog aus ihrer Lage gerissen und hochgeschleudert. Solche Schotterwirbel können insbesondere auch in der kalten Jahreszeit durch Eisschlag verursacht werden, wenn sich nämlich im Winter Eis von den Fahrzeugböden löst und mit hoher Geschwindigkeit auf die Schotteroberfläche auftrifft. Selbst grobkörniger Schotter 25/65 kann noch aus seiner Lage gerissen und hochgeschleudert werden.Such a fine-grained material can, however, be whirled up by the suction force, which is primarily caused by fast-moving passenger trains, ie individual grains of gravel are torn out of their position by the suction and flung up. Such gravel swirls can be caused in particular by cold ice in the cold season, when in winter ice loosens from the vehicle floors and hits the gravel surface at high speed. Even coarse-grained ballast 25/65 can still be torn out of its position and flung up.
So hat man versucht, die oberste Schotter- bzw. Splittlage mit Drahtgewebe zu sichern. Es stellte sich aber als nachteilig heraus, daß selbst dieses Drahtgewebe von dem von den darüberfahrenden Zügen verursachten Sog losgerissen wurden.An attempt was made to secure the top layer of gravel or chippings with wire mesh. However, it turned out to be disadvantageous that even this wire mesh was torn away by the pull caused by the trains traveling over it.
Bei gebundenen Bauweisen wurde versucht, das Schüttmaterial mit chemischen Mitteln, beispielsweise Klebern, oberflächlich zu befestigen. Dies ist durch Besprühen der Oberfläche des Schüttmaterials möglich, allerdings mit dem großen Nachteil, daß die Schwellen, Schienen und deren Befestigungsmittel dabei nicht unerheblich verunreinigt werden.In the case of bound construction methods, attempts have been made to attach the bulk material to the surface by chemical means, for example adhesives. This is possible by spraying the surface of the bulk material, but with the major disadvantage that the sleepers, rails and their fastening means are not negligibly contaminated.
Aus der DE-OS 38 21 963 ist es auch bekannt, einen bei Umgebungstemperatur fließfähigen Kleber zu verwenden, der zunächst durch Abkühlung in den festen Aggregatzustand überführt, auf das Schüttmaterial aufgebracht und durch das allmähliche Auftauen des gekühlten Klebers die Aufbringung auf das Haufwerkgebilde zeitlich dosiert wird. Durch diese zeitlich verzögert stattfindende Verklebung soll erreicht werden, daß das Schüttmaterial nicht nur in der obersten Schicht, sondern auch in eine größere Tiefe hinein verklebt wird. Abgesehen davon, daß dieses Verfahren insbesondere durch das notwendige vorherige Abkühlen des Klebers verhältnismäßig aufwendig ist, hält diese Verklebung nur so lange, wie das Schotterhaufwerk nicht in seiner Lage verändert wird, beispielsweise durch Nachstopfen.From DE-OS 38 21 963 it is also known to use an adhesive which is flowable at ambient temperature, which is first converted to the solid state by cooling, applied to the bulk material and, by gradually thawing the cooled adhesive, metering the time onto the aggregate structure becomes. This delayed gluing is intended to ensure that the bulk material is glued not only in the uppermost layer but also to a greater depth. Apart from the fact that this method is relatively complex, in particular because of the necessary prior cooling of the adhesive, this bonding only lasts as long as the position of the ballast pile is not changed, for example by tamping.
Es wurde auch bereits versucht, den in den Oberbau einzubringenden Schotter bzw. Splitt vorher mit Heißbitumen zu umhüllen. Dazu ist es notwendig, daß das Gesteinsmaterial in bekannten Asphaltaufbereitungsanlagen erhitzt und mit Bitumen umhüllt wird, wobei der Einbau des umhüllten Gesteinsmaterials nur in heißem Zustand möglich ist. Es muß deshalb innerhalb kurzer Zeit (Topfzeit oder Auskühlphase) eingebracht werden, d.h., ein Antransport des vorbereiteten Gesteinsmaterials beispielsweise mit den bekannten Schotterwaggons der Bundesbahn ist nicht möglich.Attempts have also already been made to cover the ballast or grit to be introduced into the superstructure beforehand with hot bitumen. For this purpose, it is necessary that the rock material is heated in known asphalt processing plants and coated with bitumen, whereby the installation of the coated rock material is only possible when it is hot. It must therefore be introduced within a short period of time (pot life or cooling phase), ie it is not possible to transport the prepared rock material with the known ballast wagons of the German Federal Railways.
In der USA-Zeitschrift "Railway Track and Structures", Juli 1959, Seiten 25 bis 27, wird ein Verfahren beschrieben, bei welchem der Schotter vor dem Einbau mit Kalt-Bitumen umhüllt und dann unter den Gleisrost, nämlich unter die Schwellen eingebracht wurde. Zusätzlich hat man über das Schotterbett eine ca. 2,5 cm dicke Beschichtungsdecke aus einer Mischung von Kalt-Bitumen und nassem Sand aufgebracht.In the USA magazine "Railway Track and Structures", July 1959, pages 25 to 27, a method is described in which the ballast was covered with cold bitumen before installation and then introduced under the track grate, namely under the sleepers. In addition, an approx. 2.5 cm thick coating ceiling made of a mixture of cold bitumen and wet sand was applied over the ballast bed.
Aufgabe der Erfindung ist es nun, ein Verfahren der eingangs genannten Art dahingehend zu verbessern, daß das Schottermaterial bereits vor dem Einbau in einen für eine spätere Verfestigung geeigneten Zustand gebracht wird, das mit Bindemitteln behandelte Material auch über mehrere Wochen ohne Verklebung lager- und danach noch transportfähig ist und nach dem Einbau in die Fahrbahn die gewünschte Verfestigung sichergestellt wird.The object of the invention is now to improve a method of the type mentioned in such a way that the ballast material is brought into a state suitable for later consolidation even before installation, and the material treated with binders is stored for several weeks without gluing and afterwards is still transportable and the desired consolidation is ensured after installation in the road.
Diese Aufgabe wird dadurch gelöst, daß das Material in einer geeigneten Anlage aufbereitet und mit einem möglichst dicken Film aus einem thermoplastischen Bindemittel umhüllt, das umhüllte Material mittels eines geeigneten Mediums und gegebenenfalls unter Zusatz geeigneter Trennmittel in einen nicht haftenden Zustand überführt und das so behandelte Material in den Baukörper eingebracht und während und/oder nach dem Einbau wärmemäßig behandelt wird.
Das nach dem vorstehend beschriebenen Verfahren behandelte Gesteins- und/oder Schlackenmaterial hat gegenüber den eingangs geschilderten bekannten Verfahren den Vorteil, daß während der Zwischenlagerung und des Transports zur Einbaustelle keine vorzeitigen Verklebungen im Gesteinsmaterial stattfinden, insbesondere ist es über mehrere Wochen ohne Verklebung lagerfähig. Andererseits wird aber nach dem späteren Einbau eine innige Verklebung der einzelnen mit dem Bindemittelfilm versehenen Bestandteile des Gesteinsmaterials durch die Einwirkung von Wärme bewirkt. Weiterer und wesentlicher Vorteil dieses neuen Verfahrens ist, daß nach dem Einbau des verfahrensgemäß behandelten Gesteinsmaterials keine weitere materialmäßige Behandlung durchgeführt werden muß, insbesondere muß also nicht nach dem Einbau des Materials ein den Gleisrost verschmutzendes Bindemittel auf- bzw. eingebracht werden, d.h., das neue Verfahren ist weniger arbeitsaufwendig.This object is achieved in that the material is processed in a suitable plant and coated with a film of a thermoplastic binder that is as thick as possible, the coated material is converted into a non-adhesive state by means of a suitable medium and, if appropriate, with the addition of suitable release agents, and the material treated in this way is brought into the building and is thermally treated during and / or after installation.
The rock and / or slag material treated according to the process described above has the advantage over the known processes described at the outset that there is no premature bonding in the rock material during intermediate storage and transport to the installation site, in particular it can be stored for several weeks without bonding. On the other hand, after subsequent installation, the individual components of the rock material provided with the binder film are intimately bonded by the action of heat. Another and significant advantage of this new method is that after the installation of the rock material treated according to the method, no other Material treatment must be carried out, in particular, therefore, does not have to be a binder soiling the track grate or installed after the installation of the material, ie, the new method is less labor intensive.
Vorteilhaft ist das Bindemittel Heiß-Bitumen und das Material wird in einer Asphaltaufbereitungsanlage bekannter Ausführung erhitzt, entstaubt und mit einem möglichst dicken Film aus Heiß-Bitumen umhüllt und anschließend wird das umhüllte Material mit einem Kühlmedium, z.B. Luft oder Wasser gegebenenfalls unter Zusatz geeigneter Trennmittel abgelöscht. Die Verwendung von Heiß-Bitumen als Bindemittel stellt insofern eine sehr wirtschaftliche Durchführung des erfindungsgemäßen Verfahrens dar, als Heiß-Bitumen bereits mit besten Erfahrungen im Straßenbau, also im Rahmen der dafür notwendigen Asphaltaufbereitung hergestellt wird und herkömmliche Asphaltaufbereitungsanlagen verwendet werden können.The binder is hot bitumen and the material is heated in an asphalt processing plant of known design, dusted and coated with a thickest possible film of hot bitumen and then the coated material with a cooling medium, e.g. Air or water may be extinguished with the addition of suitable release agents. The use of hot bitumen as a binder represents a very economical implementation of the method according to the invention, since hot bitumen is already produced with the best experience in road construction, that is to say within the framework of the asphalt preparation required for this purpose, and conventional asphalt preparation plants can be used.
Vorteilhaft wird das eingebaute Material während und/oder nach dem Einbau mit Heißluftgeräten oder Infrarotstrahlern wärmemäßig behandelt.The built-in material is advantageously heat treated during and / or after installation with hot air devices or infrared radiators.
In vorteilhafter Weiterbildung des Verfahrens werden dem Bindemittel während des Umhüllungsvorganges Zellulose- und/oder Mineralfasern zugegeben.
Hierdurch wird insbesondere erreicht, daß die Bindemittelumhüllung die gewünschte Dicke erhält.In an advantageous development of the method, cellulose and / or mineral fibers are added to the binder during the coating process.
This ensures in particular that the binder coating is given the desired thickness.
Vorteilhaft können dem Bindemittel chemische Zusätze beigegeben werden.
Solche Zusätze vermindern die Fließeigenschaft des Bindemittels und verhindern insbesondere das Abtropfen in heißem Zustand.Chemical additives can advantageously be added to the binder.
Such additives reduce the flow properties of the binder and in particular prevent dripping when hot.
Das vorstehend geschilderte erfindungsgemäße Verfahren kann speziell auch beim klassischen Schotteroberbau, also ohne feste Fahrbahn angewandt werden. Ein aus dem verfahrensgemäß behandelten Schotter hergestellter Gleisoberbau kann ohne weiteres nachgestopft werden, das mit dem dicken Bindemittelfilm umgegebene Material gewährleistet auch eine erneute Verklebung.The method according to the invention described above can also be used especially in the case of classic ballast track superstructure, that is to say without a solid roadway. One from the procedural The track superstructure made of treated ballast can be replanted without further ado, the material surrounded by the thick binder film also guarantees re-gluing.
Das vorbeschriebene Verfahren kann aber nicht nur im Eisenbahnbau, sondern auch im Wasserbau bei der Herstellung von Uferbefestigungen, Filterschichten und Asphaltdichtungen etc. angewandt werden. Der zusätzliche Auftrag heißer Asphaltbeläge führt außerdem umgehend zu der gewünschten Verklebung. Anwendbar ist das erfindungsgemäße Verfahren auch beim Einbau von solchen Materialien als stabile Schutz- und Filterschichten auf hitzeempfindlichen Dichtungsfolien.The method described above can be used not only in railway construction, but also in hydraulic engineering in the manufacture of bank reinforcements, filter layers and asphalt seals etc. The additional application of hot asphalt surfaces also leads immediately to the desired bond. The method according to the invention can also be used when installing such materials as stable protective and filter layers on heat-sensitive sealing foils.
Ähnliche Verwendungsgebiete des Verfahrens ergeben sich auch im Straßenbau, beispielsweise bei der Befestigung von Böschungen bei eventueller späterer Begrünung o.ä. Schließlich ist die Anwendung des Verfahrens überall dort sinnvoll, wo aus Gründen der Örtlichkeit oder wegen nicht zulässiger hoher Temperaturbelastungen der Einbau offener, d.h. hohlraumreicher Asphaltbefestigungen nicht möglich ist.Similar areas of application of the method also arise in road construction, for example when attaching embankments in the event of subsequent greening or the like. Finally, the application of the method makes sense where, for reasons of location or because of unacceptable high temperature loads, the installation is more open, i.e. void-rich asphalt pavement is not possible.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914138068 DE4138068C2 (en) | 1991-11-19 | 1991-11-19 | Process for the solidification of structures made of pourable materials |
| DE4138068 | 1991-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0545137A1 true EP0545137A1 (en) | 1993-06-09 |
Family
ID=6445152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92119613A Withdrawn EP0545137A1 (en) | 1991-11-19 | 1992-11-17 | Process for the consolidation of a solidium obtained of bulk material |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0545137A1 (en) |
| DE (1) | DE4138068C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2770235A1 (en) * | 1997-10-23 | 1999-04-30 | Et L Entretien Des Routes Sa P | Mineral metalling for road surfaces |
| AT405424B (en) * | 1997-08-12 | 1999-08-25 | Porr Allg Bauges | Ballastless permanent way with sound-insulating elements |
| GB2342376A (en) * | 1998-10-09 | 2000-04-12 | Amey Railways Limited | Method of levelling a railway sleeper and panel for use in the method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4430769C2 (en) * | 1994-08-30 | 2001-05-03 | Dyckerhoff & Widmann Ag | Railway superstructure with a track grating supported on a continuous support plate made of reinforced concrete |
| DE19755602A1 (en) * | 1996-12-18 | 1998-06-25 | Heitkamp Gmbh Bau | Surface for a high speed railway track |
| DE19808867A1 (en) * | 1998-03-03 | 1999-09-09 | Ihle | Track construction method for rail guided vehicles of all types in which bitumen is replaced by a thermoplastic matrix |
| DE19843193A1 (en) | 1998-09-15 | 2000-03-30 | Mannesmann Ag | Process for the production of a spreading chaff covered with a binding agent |
| DE102010030334A1 (en) | 2010-06-22 | 2011-12-22 | Ed. Züblin Ag | Method for rehabilitating a track system with a ballast bed |
| DE102012004720A1 (en) * | 2012-03-07 | 2013-09-12 | Frank Petrick | Method for solidifying loose soil materials used for e.g. ballast of railroad track, involves curing viscous bonding agent arranged on soil material, after heating bonding viscous agent using heating lathe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR439462A (en) * | 1912-01-27 | 1912-06-14 | Teerstrassenbau Ges Wayss M B | Method and apparatus for obtaining natural or artificial stones coated in a bituminous material with a high softening point, which can be stored in deposit without fear that they will stick together |
| GB962738A (en) * | 1961-08-03 | 1964-07-01 | Shell Int Research | Improved permanent way and a process for producing it |
| FR1390085A (en) * | 1964-04-23 | 1965-02-19 | Shell Int Research | Improved permanent track and process to increase the stability of its ballast |
| DE2063727A1 (en) * | 1970-12-24 | 1972-08-24 | Michelfelder, Gerhard, 8000 München | Method for stabilizing a ballast bed |
| US4236675A (en) * | 1977-09-19 | 1980-12-02 | Bladykas Theodore S | Process and apparatus for producing stockpileable asphaltic concrete |
| DE3817064A1 (en) * | 1988-05-19 | 1989-11-23 | Karl Reinhard Zeiss | Process for producing bitumen/filler mixtures or for applying bitumen to a surface |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3821963A1 (en) * | 1988-06-29 | 1990-01-11 | Karl Reinhard Zeiss | METHOD FOR STRENGTHENING BULLETED BEDS AND OTHER PITCHES |
-
1991
- 1991-11-19 DE DE19914138068 patent/DE4138068C2/en not_active Expired - Fee Related
-
1992
- 1992-11-17 EP EP92119613A patent/EP0545137A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR439462A (en) * | 1912-01-27 | 1912-06-14 | Teerstrassenbau Ges Wayss M B | Method and apparatus for obtaining natural or artificial stones coated in a bituminous material with a high softening point, which can be stored in deposit without fear that they will stick together |
| GB962738A (en) * | 1961-08-03 | 1964-07-01 | Shell Int Research | Improved permanent way and a process for producing it |
| FR1390085A (en) * | 1964-04-23 | 1965-02-19 | Shell Int Research | Improved permanent track and process to increase the stability of its ballast |
| DE2063727A1 (en) * | 1970-12-24 | 1972-08-24 | Michelfelder, Gerhard, 8000 München | Method for stabilizing a ballast bed |
| US4236675A (en) * | 1977-09-19 | 1980-12-02 | Bladykas Theodore S | Process and apparatus for producing stockpileable asphaltic concrete |
| DE3817064A1 (en) * | 1988-05-19 | 1989-11-23 | Karl Reinhard Zeiss | Process for producing bitumen/filler mixtures or for applying bitumen to a surface |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT405424B (en) * | 1997-08-12 | 1999-08-25 | Porr Allg Bauges | Ballastless permanent way with sound-insulating elements |
| FR2770235A1 (en) * | 1997-10-23 | 1999-04-30 | Et L Entretien Des Routes Sa P | Mineral metalling for road surfaces |
| WO1999022070A1 (en) * | 1997-10-23 | 1999-05-06 | Societe Anonyme Pour La Construction Et L'entretien Des Routes | Stabilised structure, in particular ballast type and method for stabilising such a structure |
| GB2342376A (en) * | 1998-10-09 | 2000-04-12 | Amey Railways Limited | Method of levelling a railway sleeper and panel for use in the method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4138068A1 (en) | 1993-05-27 |
| DE4138068C2 (en) | 1995-08-17 |
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