DE29702033U1 - Molded body - Google Patents

Molded body

Info

Publication number
DE29702033U1
DE29702033U1 DE29702033U DE29702033U DE29702033U1 DE 29702033 U1 DE29702033 U1 DE 29702033U1 DE 29702033 U DE29702033 U DE 29702033U DE 29702033 U DE29702033 U DE 29702033U DE 29702033 U1 DE29702033 U1 DE 29702033U1
Authority
DE
Germany
Prior art keywords
molded body
shaped body
body according
polyurethane
composition
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
DE29702033U
Other languages
German (de)
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.)
SEDRA ASPHALT TECHNIK BIEBRICH
Original Assignee
SEDRA ASPHALT TECHNIK BIEBRICH
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 SEDRA ASPHALT TECHNIK BIEBRICH filed Critical SEDRA ASPHALT TECHNIK BIEBRICH
Priority to DE29702033U priority Critical patent/DE29702033U1/en
Publication of DE29702033U1 publication Critical patent/DE29702033U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B21/00Track superstructure adapted for tramways in paved streets
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B13/00Arrangements preventing shifting of the track
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B19/00Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00Characteristics of the track and its foundations
    • E01B2204/11Embedded tracks, using prefab elements or injecting or pouring a curable material

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Glass Compositions (AREA)
  • Organic Insulating Materials (AREA)
  • Inorganic Insulating Materials (AREA)

Description

9*6 SD* 12 9 ODEG9*6 SD* 12 9 ODEG

FormkörperMolded body

Die Erfindung bezieht sich auf Formkörper, insbesondere als Schienenkammerfüllelement.The invention relates to shaped bodies, in particular as rail chamber filling elements.

Es gibt Schienengleise ohne einen Bahnkörper, insbesondere als Straßenbahnschienen, die in einer existierenden Straße verlegt sind. Die Straßenbahnschienen weisen seitliche Hohlräume auf, die als Kammern bezeichnet werden und mit sogenannten Kammerfüll-"Steinen" befüllt sind. Neuerdings gibt es solche Kammerfüllelemente auch aus recyceltem Gummi, vornehmlich aus Altreifen (DE 40 04 208), welche gute schwingungsdämpfende und -dämmende Eigenschaften ausweisen.There are rail tracks without a track bed, especially as tram tracks, which are laid in an existing street. The tram tracks have hollow spaces on the sides, which are called chambers and are filled with so-called chamber filling "stones". Recently, such chamber filling elements have also been made from recycled rubber, primarily from old tires (DE 40 04 208), which have good vibration-damping and vibration-insulating properties.

Der Erfindung liegt die Aufgabe zugrunde, Formkörper bereitzustellen, die als Kammerfüllelemente mit ähnlich guten Eigenschaften wie solche aus komplett recycelten Gummi aufweisen, jedoch preiswerter herstellbar sind.The invention is based on the object of providing molded bodies which, as chamber filling elements, have properties similar to those made of completely recycled rubber, but can be produced more inexpensively.

Die gestellte Aufgabe wird aufgrund der Merkmale des Hauptanspruchs gelöst und durch die weiteren Merkmale der Unteransprüche ausgestaltet und weiterentwickelt.The stated problem is solved on the basis of the features of the main claim and is developed and refined by the further features of the subclaims.

Im einzelnen wird körniges Mineral und Gummi oder Kunststoffgranulat verwendet, das mit Polyurethan gebunden wird. Das Mineral ist vorwiegend grob, während die Lücken mit elastomerem Material so weit gefüllt sind, daß der Formkörper sich insgesamt wasserdicht verhält. Das elastomere Material {Gummi und Polyurethan) bildet gewissermaßen Häute zwischen dem körnigen Mineral, wodurch der Formkörper genügende Elastizität erhält, um sich den Schienenkammern anzupassen, auch wenn die Schienen entsprechend den vorgesehenen Kurven gebogen sind.Specifically, granular mineral and rubber or plastic granulate are used, which are bound with polyurethane. The mineral is predominantly coarse, while the gaps are filled with elastomeric material to such an extent that the molded body is watertight overall. The elastomeric material (rubber and polyurethane) forms a kind of skin between the granular mineral, which gives the molded body sufficient elasticity to adapt to the rail chambers, even if the rails are bent according to the intended curves.

Nachfolgend wird ein Ausführungsbeispiel beschrieben. Für die Herstellung des Formkörpers wurde folgende Zusammensetzung gewählt:An example of implementation is described below. The following composition was chosen to produce the molded body:

• ··

&bull; <&bull; <

&bull; ··

Material Körnung Gew.%Material Grain Weight%

(mm)(mm)

MineralsplittMineral grit

aus Kalkstein, 1-8 50-80made of limestone, 1-8 50-80

Marmor, Quarz odgl.Marble, quartz or similar

Elastomergranulat
(Gummi,
Kabelabfälle) 0,1-10 15-40
Elastomer granulate
(Rubber,
Cable waste) 0.1-10 15-40

Polyurethan alsPolyurethane as

Binder - 5-10Binders - 5-10

Die Zusammensetzung wird innig gemischt und in geeigneten Formen unter hohem Druck und Hitze bei etwa 60 bis 7O0C während 5 bis 10 Minuten verpreßt, um daraus die gewünschten Formkörper zu erhalten. Wenn relativ wenig feines Material vorhanden ist, ist der Formkörper porig und damit wasserdurchlässig. Während es auch Anwendungen für wasserdurchlässige Formkörper gibt, wird bei der Anwendung als Kammerfüllelement relative Wasserundurchlässigkeit angestrebt. Deshalb sollte der Anteil "Elastomergranulat" einen hohen Prozentsatz feines Material enthalten, beispielsweise 10 bis 15 Gew.% Gummimehl, bezogen auf die Gesamtzusammensetzung. Wenn eine gewisse Gashaltigkeit des Formkörpers angestrebt wird, ohne die Wasserdichtigkeit zu gefährden, kann man dem Polyurethan ein geringes Treibmittel zusetzen, so daß sich geschlossene Bläschen in dem Formkörper zwischen dem körnigen Mineral bilden.The composition is thoroughly mixed and pressed in suitable molds under high pressure and heat at about 60 to 70 0 C for 5 to 10 minutes to obtain the desired molded body. If there is relatively little fine material, the molded body is porous and thus permeable to water. While there are also applications for water-permeable molded bodies, relative water impermeability is the aim when using it as a chamber filling element. The "elastomer granulate" portion should therefore contain a high percentage of fine material, for example 10 to 15% by weight of rubber powder, based on the total composition. If a certain gas content of the molded body is desired without endangering its watertightness, a small amount of blowing agent can be added to the polyurethane so that closed bubbles form in the molded body between the granular mineral.

Es ist auch möglich, den Formkörper zweischichtig aufzubauen, beispielsweise in der Anlagezone mit der Schienenkammer aus Material einer Zusammensetzung mit höherem Elastomergehalt.It is also possible to construct the molded body in two layers, for example in the contact zone with the rail chamber made of material with a composition with a higher elastomer content.

Claims (1)

Schut zansprücheProtection claims 1. Formkörper, insbesondere als Schienenkammerfüllelement, mit folgender Zusammensetzung: 50 - 80 Gew.% körniges Mineral, 15 - 40 Gew.% Elastomergranulat, 5-10 Gew.% Polyurethan als Bindemittel.1. Shaped body, in particular as a rail chamber filling element, with the following composition: 50 - 80 wt.% granular mineral, 15 - 40 wt.% elastomer granulate, 5-10 wt.% polyurethane as a binding agent. . Formkörper nach Anspruch 1, dadurch gekennzeichnet, daß das körnige Mineral eine Partikelgröße im Bereich von 1 bis 8 mm aufweist.. Shaped body according to claim 1, characterized in that the granular mineral has a particle size in the range of 1 to 8 mm. . Formkörper nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Elastomergranulat aus Abfällen oder recyceltem Material besteht und eine Körnigkeit von 0,1 bis 10 mm aufweist.. Shaped body according to claim 1 or 2, characterized in that the elastomer granulate consists of waste or recycled material and has a grain size of 0.1 to 10 mm. . Formkörper nach Anspruch 3, dadurch gekennzeichnet, daß etwa 10 bis 15 Gew.% Gummimehl in der Zusammensetzung vorhanden ist.. Shaped body according to claim 3, characterized in that about 10 to 15 wt.% rubber powder is present in the composition.
DE29702033U 1997-02-06 1997-02-06 Molded body Expired - Lifetime DE29702033U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29702033U DE29702033U1 (en) 1997-02-06 1997-02-06 Molded body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29702033U DE29702033U1 (en) 1997-02-06 1997-02-06 Molded body

Publications (1)

Publication Number Publication Date
DE29702033U1 true DE29702033U1 (en) 1997-04-03

Family

ID=8035560

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29702033U Expired - Lifetime DE29702033U1 (en) 1997-02-06 1997-02-06 Molded body

Country Status (1)

Country Link
DE (1) DE29702033U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2045063A1 (en) * 2007-10-02 2009-04-08 Casei Eco System S.R.L. Process for producing a weight-increased manufactured article made of rubber granules
DE102017127585A1 (en) * 2017-11-22 2019-05-23 Het Elastomertechnik Gmbh Fire retardant rail chamber filling element and elastomer molding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2045063A1 (en) * 2007-10-02 2009-04-08 Casei Eco System S.R.L. Process for producing a weight-increased manufactured article made of rubber granules
DE102017127585A1 (en) * 2017-11-22 2019-05-23 Het Elastomertechnik Gmbh Fire retardant rail chamber filling element and elastomer molding

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19970515

R156 Lapse of ip right after 3 years

Effective date: 20001201