EP0679765B1 - Elément d'écran insonorisant et procédé de fabrication d'un élément d'écran insonorisant - Google Patents

Elément d'écran insonorisant et procédé de fabrication d'un élément d'écran insonorisant Download PDF

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Publication number
EP0679765B1
EP0679765B1 EP95104051A EP95104051A EP0679765B1 EP 0679765 B1 EP0679765 B1 EP 0679765B1 EP 95104051 A EP95104051 A EP 95104051A EP 95104051 A EP95104051 A EP 95104051A EP 0679765 B1 EP0679765 B1 EP 0679765B1
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EP
European Patent Office
Prior art keywords
sound
absorption layer
insulation layer
sound absorption
layer
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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
EP95104051A
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German (de)
English (en)
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EP0679765A1 (fr
Inventor
Kurt Dr. Bitterli
Remo Bossert
Dieter Ludwig
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers

Definitions

  • the invention relates to a soundproofing element for soundproof walls, consisting of a sound insulation layer and at least one on one of the sides of the soundproofing layer located sound absorption layer, the Sound insulation layer and the sound absorption layer elastomer, Contain rubber and / or plastic granulate from recycled material.
  • the invention further relates to a method for manufacturing of such a soundproofing element.
  • Such soundproofing elements are usually stacked on top of one another on soundproofing segments and their rows assembled into long soundproof walls.
  • the spatial The soundproofing elements are fixed in that this between firmly anchored in the ground and in a predetermined Distance between columns or other substructures be inserted.
  • Soundproofing elements on existing components such as buildings or To fasten structures.
  • noise barriers which, for example, along railway lines, highways or set up alongside industrial facilities, can reduce the noise emissions from traffic or industrial facilities be significantly reduced so that nearby residential areas be effectively protected against disturbing noise emissions.
  • the soundproofing elements used for this must, however meet a wide variety of requirements, from acoustic and optical requirements up to fire protection Demands are enough.
  • the soundproofing elements mechanically particularly stable and high stability have, since these come as close as possible to the sound source have to be and thus possibly quite significant Differences in pressure act on this, such as this the case when a train passes by is.
  • the soundproofing elements have to be extremely stable have to be applied loads by pressure or impact, such as when a vehicle collides the case may be undamaged or largely survive without damage.
  • the noise protection element consists of a plate-shaped element made of plastic and / or elastomer granulate, which under high pressure and with addition a binder has been molded. On a flat side this plate-shaped element is resistant to aging and in particular UV-resistant protective layer applied, their composition similar to that of the plate-shaped element is.
  • This protective layer serves on the one hand to ensure that underlying plate-shaped element against environmental influences to protect and on the other hand to the back of the To give the noise protection element a pleasing appearance, by being colored and / or with any profiling is provided.
  • a layer of an elastomer and / or plastic granulate, which is bound with a binder and only with little Pressure is compression molded. Due to the low pressure this layer receives a porous structure which the desired Has sound absorption properties. These properties can be further improved if the gap between the plate-shaped element and the sound absorption layer is filled with a fiber material.
  • Noise protection walls can be made with such noise protection elements build up, the acoustic properties of the can be adapted to the respective application.
  • these noise protection elements are complicated Own structure and therefore expensive to manufacture are. Additional measures must also be taken to implement the required fire safety, which further increase manufacturing costs.
  • the mechanical stability limited, so these noise control elements damaged by high pressure waves can be.
  • the invention is therefore based on the object, an easy Soundproofing element to be handled and a method for producing it to create the same for soundproof walls is simple and cheap to manufacture, as low a weight as possible has a high mechanical strength, as well as good fire safety.
  • the object underlying the invention is in one Soundproofing element of the type mentioned above solved that the soundproofing layer as a heterogeneous solid with anisotropic mechanical properties with the addition of a mineral, plastic-coated and hydraulically setting Binder is formed that the sound absorption layer an organic binder from a lower density flame retardant polyurethane or chlorosulfonated Polyethylene is added and that the sound insulation layer and the sound absorption layer merge into one another.
  • the soundproofing element according to the invention is particularly simple built up, has a low weight and is in its Manufacture particularly cheap, because on the one hand preferably recycling materials are used and on the other hand its Manufacturing can be done in one operation. It can do that done that the individual layers one after the other filled without pressure into a corresponding form and subsequently be cured.
  • This is the soundproofing element according to the invention for the production of inexpensive soundproof walls particularly well suited.
  • one is very good sound insulation and sound absorption, where the sound absorption by changing the structure and the Mixing ratios adapted to the respective requirements can be.
  • this soundproofing element is however in its very good mechanical properties and its comparatively light weight to see what makes it it is possible to manufacture particularly low soundproof walls, as well as high soundproof walls thanks to cassette-like Stacking and lining up the soundproofing elements to realize.
  • the sound absorption layer suitably consists of a mixture largely from recycled plastic granulate and a second organic solid phase, preferably from irregular shaped fragments of porous lava clay.
  • this is heterogeneous Mixture of the sound insulation layer and the mixture of the sound absorption layer mixed in any mixing ratio, the sound insulation layer continuously into the Sound absorption layer passes over.
  • the soundproofing element is particularly favorable mechanical Receives properties, while at the same time another improvement the sound absorption properties is achieved.
  • the density of the sound absorption layer should be set Condition advantageously less than 1.1 and the density of the soundproofing layer in the set state be greater than 1.1. This makes particularly good sound absorption and sound insulation values reached.
  • a special embodiment of the invention is within the sound absorption layer and / or the sound insulation layer reinforcement to increase the mechanical stability Reinforcing iron or reinforcing nets sandwiched in two or more levels arranged.
  • This reinforcement can be used at the same time inserting the individual layers into the mold will. Because this reinforcement is on all sides of the material of the individual layers is created after curing the soundproofing element is a particularly firm sandwich-like Composite.
  • the sound absorption layer on their the sound source facing side is provided with a surface structure, those made of one piece and running lengthways or crossways Ribs or depressions may exist that are trapezoidal or have a wavy cross-sectional shape. It is also possible, integrally molded, regularly distributed projections or to provide recesses which are conical, truncated cone, pyramidal or prismatic cross-sectional structure exhibit. Because of the enlargement of the surface becomes a significant enhancement of the sound absorption effect reached.
  • the sound absorption layer can contain chemical additives to prevent flammability.
  • suitable combustible additives are also hydroxides or carbonates, for example aluminum hydroxide (Al (OH) 3 ) or halogen-containing hydrocarbons or phosphoric acid ethers. It is also possible to use granules which are difficult to combust, as is the case, for example, when recycling cables or conveyor belts.
  • the object underlying the invention will continue through a process for the manufacture of soundproofing elements for soundproof walls, consisting of a load-bearing soundproofing layer and one on one of the sides of the soundproofing layer located sound absorption layer, thereby loosened, that a first evenly mixed mixture of a flame retardant polyurethane and / or a flame-retardant binder based on chlorosol-treated Polyethylene with an elastomer and / or plastic granulate from recycled material, the sound absorption layer forming, is filled without pressure into a mold.
  • the setting of the first mixture becomes a second mixture greater density from a plastic-bonded elastomer and / or Plastic granules made from recycled material and one mineral hardened and hydraulically setting Binder, forming the soundproofing layer, into the Form filled.
  • the setting process of the first and the second Layer occurs essentially at the same time under a light layer Pressure increase.
  • the soundproofing element according to the invention can thus be used low effort and therefore cheap to manufacture. Through the in essential simultaneous setting of the sound insulation layer and the soundproofing layer becomes a particularly solid one-piece Verbund reached.
  • the shape before setting the first and the second mixture closed with a lid and before the two mixtures have set by 180 ° turned. In this way, a targeted minor Reach pressure increase, the sound absorption layer is not compressed unnecessarily, as is done by the uncontrolled Penetration of the hydraulically setting binder the second mixture into the first mixture could.
  • the first mixture can be mixed with a difficultly flammable granulate, preferably from cable or conveyor belt waste and / or Al (OH) 3 , halogen-containing hydrocarbons or phosphoric acid esters.
  • a Soundproofing element 1 produced according to the invention is shown, which consists of a sound insulation layer 2 and a solid with this connected sound absorption layer 3.
  • a protective layer not shown be provided on the opposite side of the sound absorption layer 3
  • the sound insulation layer 2 and the sound absorption layer 3 from a uniform mixed elastomer and / or plastic granulate, the sound insulation layer 2 with the addition of a mineral, Plastic-coated hydraulically setting binder, for example cement, to form a firm bond with heterogeneous structure is cured.
  • the sound insulation layer 2 is a mixture of gravel and sand to mix.
  • the density of the soundproofing layer 2 should be greater than 1.1 and the Density of the sound absorption layer 3 should be less than 1.1.
  • the density can be easily changed by changing the Set the mixing ratio.
  • the Sound absorption layer 3 additionally irregularly shaped Fragments of lavabone contain so that a special good sound absorption effect is achieved.
  • This mixture gives very good sound absorption properties achieved, including the fire protection requirements can be fulfilled very easily by chemical Additives against flammability and / or flame-retardant granules, for example from cable or conveyor belt waste or recycling material can be obtained.
  • PU binders that are difficult to burn can be used be used.
  • Reinforcement 4 made of reinforcement bars or reinforcement nets, also Glass, glass fiber materials or plastics for use can come out sandwiched in two or more levels are arranged one above the other.
  • the multi-layered reinforcements 4 can also have different distances from each other exhibit.
  • This reinforcement 4 is a significant improvement in achieved mechanical stability of the soundproofing element 1, it is of course possible, also in the soundproofing layer 2 provide a reinforcement 4.
  • the sound absorption layer 3 has a surface structure provided with molded in one piece and provided with longitudinal or transverse ribs 5 or depressions which is a trapezoidal or wavy surface structure form and on the facing the sound source Are arranged outside.
  • ribs 5 can also be integrally attached to the sound absorption layer 3 molded on or molded in, regularly distributed projections or depressions with a cross-section more conical, truncated cone, pyramid or prism shaped Shape can be provided. For visual reasons, it is advisable if the height of all the ribs 5 or protrusions are the same is, or groups of ribs or protrusions of equal heights exhibit. The same applies to deepening.
  • ribs 5 stand up the full-area sound absorption layer 3, which is a strength of about 25 mm and are integrally connected to this. Since both the sound absorption layer 3 and the from this projecting ribs 5 have a porous structure, through the use of specially blended Granules are made from recycled rubber or plastic in conjunction with the voids between each Grains of the granulate have particularly good sound absorption properties reached.
  • the grain shape of the granules can be round, be angular or varied.
  • the size of the cavities should add up to about 50% by volume, with the cavities mostly by the manufacturing process to be described are contiguous.
  • the individual granules of the granulate are separated by an organic one Binder based on, for example, polyurethane or chlorosulfonated polyetylene to form an elastic body connected with each other. Gluing the granules takes place under low pressure and at normal temperature or at a slightly elevated temperature.
  • the sound insulation layer 3 is at the same time in static Sensible part of the soundproofing element 1, the Thickness of this layer depends on the static requirements. As a rule, the sound insulation layer 3 should have a thickness about 80 - 100 mm.
  • the production of the soundproofing elements 1 is particularly simple and can be done in a few work steps. This is first a first mixture of an evenly mixed, flame-retardant PU, or a difficult flammable binder based on chlorosulfonated Polyethylene and elastomer and / or plastic granulate from recycled material to fill without pressure into a mold in order to Produce sound absorption layer 3.
  • the sound absorption layer is always on the side of the soundproofing element on which the noise emission occurs, for example from motor vehicles, the sound absorption layer should be particularly difficult to combust.
  • This can be achieved by additionally adding a granulate made from a flame-retardant material, such as cable or conveyor belt waste, to this first mixture.
  • a flame-retardant material such as cable or conveyor belt waste
  • Al (OH) 3 halogen-containing hydrocarbons or phosphoric acid esters can also be added.
  • a second mixture becomes larger Density, the sound insulation layer 2 made of a plastic-bound Elastomer and / or plastic granulate made from recycled material with an admixture of mineral, hydraulically setting Binding agents filled into the mold without pressure.
  • the filling this layer of higher density is briefly interrupted, to insert the reinforcement in the desired levels 4 to enable.
  • After filling the first and the The second mixture is the mold with an appropriate lid locked. A subsequent rotation of the mold by 180 ° can be advantageous because it prevents the penetration of mineral Avoid binders in the sound absorption layer is, which negatively affects the sound absorption ability could be.
  • the shape also additionally heated and / or steam blown into the mold will. It is also possible to cure under to apply light pressure. To do this, it is sufficient to include the shape a suitable closure or cover and this easy to press into the mold. By curing at the same time the sound insulation layer 2 and the sound absorption layer 3 under slight pressure is at the interface between the two Layers achieved a good connection. For this it is advisable if the shape has sufficient inherent rigidity, so that the hydrostatic occurring during pressing Press these can not bend.
  • the sound absorption layer 3 and the sound insulation layer 2 can also be prepared in such a way that the mixing ratios during the first and second layers the filling in the form are continuously changed.
  • a soundproofing element 1 can thus be produced at a smooth transition from the sound absorption layer 3 is given in the sound insulation layer 2.
  • the soundproofing element 1 produced according to the invention is special easy and inexpensive to manufacture and has one comparatively low weight a very good mechanical Stability on.
  • a particular advantage of this solution is also to see that mainly recycling or waste materials used to manufacture the soundproofing element 1 can be, so that because of the enormous attack this Materials is shown a meaningful utilization.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Laminated Bodies (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Stringed Musical Instruments (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Claims (10)

  1. Eléments d'insonorisation pour murs antibruits, composés d'une couche d'isolation phonique portante (2) et d'au moins une couche d'absorption acoustique sur un côté de la couche d'isolation phonique (3), les couches d'isolation phonique (2) et d'absorption acoustique (3) 15 contenant un granulat d'élastomère, de caoutchouc et/ou de matières plastiques formé de matières recyclées, eléments caractérisés par:
    une couche d'isolation phonique (2) conçue comme un solide hétérogène aux propriétés mécaniques anisotropes, contenant un liant minéral hydraulique affiné par adjonction de matières plastiques,
    une couche d'absorption acoustique (3) de faible densité contenant un liant organique composé de polyuréthane peu combustible ou de polyéthylène chlorosulfoné, et par
    une couche d'isolation phonique (2) et une couche d'absorption acoustique (3) formées en un seul bloc.
  2. Elément d'insonorisation selon la spécification 1, caractérisé par une couche d'absorption acoustique (3) composée d'un mélange de granulat de matières plastiques recyclées et d'une deuxième phase solide inorganique, composée de préférence de fragments irréguliers de béton à lave poreux.
  3. Eléments d'insonorisation selon les spécifications 1 et 2, caractérisés par un mélange hétérogène de la couche d'isolation phonique (2) et un mélange de la couche d'absorption acoustique (3) choisis chacun dans les proportions souhaitées, la couche d'isolation phonique (2) formant une seule masse avec la couche d'absorption acoustique (3).
  4. Elément d'insonorisation selon l'une des spécifications 1 a 4, caractérisé par une densité de la couche d'absorption acoustique (3) inférieure à 1,1 une fois prise, et une densité de la couche d'isolation phonique (2) supérieure à 1,1 une fois prise.
  5. Elément d'insonorisation selon l'une des spécifications 1 a 4, caractérisé par une armature (4) de la couche d'absorption acoustique et/ou de la couche d'isolation phonique (2), armature (4) en métal, matiére plastique ou verre disposée en sandwich sur un ou plusieurs plans.
  6. Elément d'insonorisation selon l'une des spécifications 1 à 7, caractérisé par la présence sur le côté de la couche d'absorption acoustique (3) exposé à la source sonore d'une structure géométrique de surface composée soit de nervures (5) longitudinales outransversales formées d'un seul tenant ou de rainures à section trapézoïdale ou ondulée, soit de saillies ou renfoncements régulièrement répartis, à section cônique, en tronc de cône, pyramidale ou prismatique.
  7. Elément d'insonorisation selon l'une des spécifications 1 à 6, caractérisé par l'adjonction à la couche d'absorption sonore (3) d'Al(OH)3 et/ou d'hydrocarbures halogénés et/ou d'ester phosphorique, afin d'en réduire la combustibilité.
  8. Procédé de fabrication d'un élément d'insonorisation composé d'une couche d'isolation phonique portante (2) et d' une couche d'absorption acoustique (3) située sur l'un des côtés de la couche d'isolation phonique,
    caractérisé par
    le remplissage sans pression dans un moule, d'un mélange homogène de polyuréthane peu combustible et/ou de liant peu combustible sur une base de polyéthyléne chlorosulfoné et de granulat d'élastomère ou de matières plastiques recyclés, formant la couche d'absorption acoustique (3),
    le remplissage sans pression dans le moule, avant la prise du premier mélange, d'un deuxième mélange de plus haute densité composé d'un granulat d'élastomère ou de plastique recyclé à liant plastique et d'un liant minéral hydraulique affiné par adjonction de matières plastiques, ce deuxième mélange formant la couche d'isolation phonique (2),
    la prise presque totalement simultanée de la première et de la deuxième couche sous une pression légèrement augmentée.
  9. Procédé selon la spécification 8, caractérisé par la fermeture du moule au moyen d'un couvercle avant la prise de la première et de la deuxième couche, et la rotation à 180° du moule avant la prise de la première et de la deuxième couche.
  10. Procédé selon la spécification 8, caractérisé par l'adjonction au premier mélange d'un granulat peu combustible, de préférence composé de déchets de câbles ou de tapis roulant et/ou d'Al(OH)3, d'hydrocarbures halogénés ou d'ester phosphoré.
EP95104051A 1994-03-30 1995-03-20 Elément d'écran insonorisant et procédé de fabrication d'un élément d'écran insonorisant Expired - Lifetime EP0679765B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4411003A DE4411003C2 (de) 1994-03-30 1994-03-30 Schallschutzelement und Verfahren zum Herstellen eines Schallschutzelementes
DE4411003 1994-03-30

Publications (2)

Publication Number Publication Date
EP0679765A1 EP0679765A1 (fr) 1995-11-02
EP0679765B1 true EP0679765B1 (fr) 1998-05-27

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EP95104051A Expired - Lifetime EP0679765B1 (fr) 1994-03-30 1995-03-20 Elément d'écran insonorisant et procédé de fabrication d'un élément d'écran insonorisant

Country Status (3)

Country Link
EP (1) EP0679765B1 (fr)
AT (1) ATE166682T1 (fr)
DE (2) DE4411003C2 (fr)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
EP0825302A1 (fr) * 1996-08-20 1998-02-25 Alpha Brevet S.A. Dispositif d'absorption du son, notamment le long des routes
WO1998026131A1 (fr) * 1996-12-10 1998-06-18 Paul Andermatt Ecran antibruit
WO2003008711A1 (fr) 2001-07-16 2003-01-30 Paul Andermatt Mur antibruit
DE10141265B4 (de) * 2001-08-22 2005-02-24 Hans-Peter Bock Modifizierte Verbundplatte
AT8069U1 (de) * 2004-10-20 2006-01-15 Joro System Ges M B H Bauelement für lärmschutzwand
EP2311900B1 (fr) 2005-09-07 2015-03-11 Nippon Soda Co., Ltd. Polymères étoiles et leurs préparation
DE102008060102A1 (de) * 2008-11-28 2010-06-02 Betonwerk Schuster Gmbh Lärmschutzeinrichtung und Zuschlagstoff für die Ausbildung einer Absorberschicht einer Lärmschutzeinrichtung
ITRM20100049A1 (it) * 2010-02-11 2011-08-12 Francesco Lipari Armadillo barriera antirumore energetica ovvero sistema integrato per produrre energia pulita dal passaggio di veicoli con attenuazione del rumore stradale
DE102010014130A1 (de) * 2010-04-07 2011-10-13 Conradi + Kaiser Gmbh Schallschutzplatte, Schallschutzwand und Verfahren zur Herstellung einer Schallschutzplatte
DE102010053612A1 (de) * 2010-12-07 2012-06-14 Conradi + Kaiser Gmbh Schallschutzelement, Schallschutzwand, Fensterladen und Verfahren zur Herstellung eines Schallschutzelements

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DE2518138A1 (de) * 1975-04-24 1976-11-04 Beton & Monierbau Ag Schutzwand gegen laermimmissionen
DE7735545U1 (de) * 1977-11-21 1978-04-20 Reifen-Weiss Kg, 6342 Haiger Schalldaemmendes bauelement in form eines mehrschichtigen plattenkoerpers
DE7801086U1 (de) * 1978-01-16 1978-05-11 Gummi Stricker, Paul H. Stricker Kg, 4400 Muenster Schallschluckplatte
DE3405231A1 (de) * 1983-04-19 1984-10-25 Kork AG Boswil, Boswil Formkoerper, verfahren und vorrichtung zu seiner herstellung sowie verwendung desselben
AT394226B (de) * 1989-01-10 1992-02-25 Engelhard Konrad Schallabsorptionskoerper
DE3916799A1 (de) * 1989-05-23 1990-11-29 Sto Poraver Gmbh Schallabsorptionsplatte
DE3925354A1 (de) * 1989-07-31 1991-02-07 Helmut Schoenberger Schallschutzelement
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CH684279A5 (de) * 1991-07-05 1994-08-15 Umb Trading Ltd Lärmschutzelement für Lärmschutzwände.
DE4200159C1 (en) * 1992-01-07 1993-03-18 Ralf 2872 Hude De Mehrings Prodn. of plate section for sound-proofing wall - by forming steel-concrete carrier plate with profiled sound-absorbing front plate contg. elastic granules and binding agent shaped with stamp

Also Published As

Publication number Publication date
DE59502306D1 (de) 1998-07-02
DE4411003C2 (de) 1996-01-25
EP0679765A1 (fr) 1995-11-02
DE4411003A1 (de) 1995-10-05
ATE166682T1 (de) 1998-06-15

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