EP1317584A1 - Element de construction acoustique pour isolation acoustique dans une large gamme de frequences - Google Patents

Element de construction acoustique pour isolation acoustique dans une large gamme de frequences

Info

Publication number
EP1317584A1
EP1317584A1 EP00962489A EP00962489A EP1317584A1 EP 1317584 A1 EP1317584 A1 EP 1317584A1 EP 00962489 A EP00962489 A EP 00962489A EP 00962489 A EP00962489 A EP 00962489A EP 1317584 A1 EP1317584 A1 EP 1317584A1
Authority
EP
European Patent Office
Prior art keywords
construction element
cavities
acoustic
acoustic construction
element according
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Withdrawn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
EP00962489A
Other languages
German (de)
English (en)
Inventor
Rudy Van Reeth
Fons Wagener
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.)
Wienerberger Bricks NV
Original Assignee
Terca Bricks NV
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 Terca Bricks NV filed Critical Terca Bricks NV
Publication of EP1317584A1 publication Critical patent/EP1317584A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
    • E01F8/0076—Cellular, e.g. as wall facing

Definitions

  • the present invention relates to an acoustic construction element comprising sound insulating cavities .
  • a sound-insulation element having a wall, exhibiting perforations, and having a cavity which receives a sound-absorbing packing, which covers the mouths of the perforations.
  • the perforation- containing wall is formed by a plurality (at least two) of acoustic bricks which are fastened one beside the other on a cross-sectionally U-shaped shell.
  • the acoustic bricks usually consist of ceramic material .
  • acoustic lining element made of burnt clay, ceramic materials, cement, wood, plaster or the like.
  • This acoustic lining element comprises a plane rectangular face intended to be attached to a wall .
  • the opposite face to this one comprises a network of ribs forming corrugations parallel to one of the sides.
  • Japanese patent application n° JP 09328833 describes a sound-absorbing block by baking fire clay, into which a pore imparting material is mixed, and fire-resisting chamotte.
  • the ceramic block there are bored holes of different depth, drilled all over at right angles to the thickness direction. The ceramic block is reported to have sound absorbing performance in a frequency band having broad width.
  • the object of this invention is to provide in a sound- insulating construction element that can absorb a broad range of sound frequencies and that can be manufactured depending on the type or the frequency of noise pressure. For instance, the frequency of the disturbing noise that results from a truck that drives on a highway differs from the noise that has to be absorbed when one records a song in a music studio.
  • an acoustic construction element comprising sound insulating cavities, but in which at least part of the cavities have a first portion
  • At least some of said cavities have different internal volumes. This makes it possible to absorb a wide range of different sound frequencies.
  • a further characteristic of the invention is that the cavities have a constant shape along an axis parallel to the exposed surface of the construction element in use.
  • the cavities can have different shapes .
  • the portion of the cavities beyond the first portion is circular or oval in shape .
  • said construction element further comprises cavities having a substantially constant width over their entire depth.
  • At least some of said further cavities have different internal depths.
  • the construction element can be manufactured out of different materials.
  • said construction element is made of ceramic material.
  • ceramic construction elements can be used as regular building bricks.
  • An advantage not to neglect is that the construction element according to the invention can be used as a load carrying construction element .
  • the method for manufacturing acoustic construction elements is preferably by way of extrusion of the ceramic materials .
  • figure 2 is a perspective side and front view of an acoustic construction element according to the invention
  • - figure 2 is a side view of an acoustic construction element as shown in figure 1 .
  • the acoustic construction element is an acoustic brick (1) with a length (L) of 324 cm, a heigth (H) of 5 cm and a width (W) of 10 cm.
  • the brick is manufactured by extrusion of ceramic material, more specific red-baking clay.
  • the acoustic brick has a smooth surface. By using other clays or by addition of aggregates to the base material, the brick can obtain a different color or even a sandy structure .
  • the surface can also be rough. In function of the composition, characteristics as the absorption of water, the intensity of the pressure,... can differ.
  • the acoustic brick comprises at irregular distances, varying between 1 and 4 centimeter, separate entries of cavities (4) . At least part of said cavities have a first portion (4) , which is situated closest to the external surface of the element and at least a second portion (5) having a maximum internal width (6) which is larger than the smallest access to the cavity.
  • the cavities are each characterised by an elongated (of type e, f or h) or a "circular" (of type g, i) cavity with a different width, depth or circular shape.
  • an aimed distribution of different sound-absorbing and/or reflection-rooms is achieved, through which sound with varying frequencies can be muffled and absorbed.
  • Typical of the elongated cavities are the width of the cavity (w e ) and the depth (d e ) in the ceramic mass.
  • Typical of the circular cavities are the width of the access or entry at the top of the cavity (w c ) , but especially the radius (r c ) and the depth (d c ) of the centre (x) of the circle.
  • the cavity can also be oval shaped (cfr. cavity type i) .
  • the brick has thus a two-fold function: for one, the ceramic mass takes care for the absorption of the sound, and for another, the cavities are dimensioned in such a way that by the way of internal reflection, the sound doesn't get the chance to be reflected into free space.
  • the width ( ) of the stone and the width (w c , w e ) , the depth (d c , d e ) , the radius (r c ) of the cavities and their position on the stone can be adapte in function of certain types of frequencies and/or the level of the sound that has to be adsorbed.
  • the acoustic construction element according to the invention can be used on every place where noise or noise pollution is an item, for instance in: laboratory - hospitals - industry:
  • the cavities can also serve as a carrier of technical pipes for for instance electricity, computers, telephone, sanitary, heating, ....
  • the bricks or the panels can be mounted either horizontally, either vertically, or in a combination of the two, can be glued together or layed in bricks, or can function as a carrying or non-carrying part.
  • the bricks can be used as road blocks on which traffic can circulate.
  • the disturbing frequencies that arise when car tyres roll over the road surface can be absorbed by using the acoustic bricks as horizontal carrying driving surfaces.
  • the cavities that are present in the bricks could also function for draining the excess of water when it's raining.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Abstract

L'invention concerne un élément de construction acoustique pourvu de cavités d'isolation acoustique dont une partie au moins comporte une première section (4) située au voisinage immédiat de la surface extérieure (3) dudit élément, et au moins une seconde section (5) présentant une largeur interne maximale (6) supérieure à la largeur la moins importante de la première section (4) de la cavité. Certaines au moins de ces cavités présentent un volume interne différent. La seconde section desdites cavités présente de préférence une forme circulaire ou ovale. Par ailleurs, ledit élément de construction comprend de préférence des cavités (e, f, h) présentant une largeur sensiblement constante sur toute leur profondeur. L'invention se rapporte en outre à l'utilisation de ces éléments de construction ainsi qu'à leur procédé de fabrication.
EP00962489A 2000-09-13 2000-09-13 Element de construction acoustique pour isolation acoustique dans une large gamme de frequences Withdrawn EP1317584A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2000/008988 WO2002022961A1 (fr) 2000-09-13 2000-09-13 Element de construction acoustique pour isolation acoustique dans une large gamme de frequences

Publications (1)

Publication Number Publication Date
EP1317584A1 true EP1317584A1 (fr) 2003-06-11

Family

ID=8164097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00962489A Withdrawn EP1317584A1 (fr) 2000-09-13 2000-09-13 Element de construction acoustique pour isolation acoustique dans une large gamme de frequences

Country Status (3)

Country Link
EP (1) EP1317584A1 (fr)
AU (1) AU2000274196A1 (fr)
WO (1) WO2002022961A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1483457A1 (fr) * 2002-03-14 2004-12-08 Wienerberger Bricks N.V. Element de construction acoustique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322189A1 (de) * 1983-06-21 1985-01-10 Sf-Vollverbundstein-Kooperation Gmbh, 2820 Bremen Schallabsorbierender formstein sowie schallschutzwand aus formsteinen
FR2612225A1 (fr) 1987-03-11 1988-09-16 Gilson Pierre Element de revetement acoustique, notamment pour murs anti-bruit
DE9209991U1 (de) 1992-07-24 1992-09-24 Erlus Baustoffwerke Ag, 8301 Neufahrn Schallschutzelement
FR2742178B1 (fr) * 1995-12-12 1998-07-24 Promo Brevet Borg Sarl Bloc prefabrique pour la realisation de murs antibruit et la creation d'elements de mur et de plancher d'habitation
FR2746831B1 (fr) * 1996-03-29 1998-07-10 Joseph Perasso Et Ses Fils Element modulaire de construction ou de renovation pour la protection phonique
JPH09328833A (ja) 1996-06-07 1997-12-22 Isolite Kogyo Kk セラミックス吸音材
DE19823139C2 (de) * 1998-04-01 2000-09-07 Jerzy Lech Schalldämmende Innen- oder Außenwandbekleidung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0222961A1 *

Also Published As

Publication number Publication date
WO2002022961A1 (fr) 2002-03-21
AU2000274196A1 (en) 2002-03-26

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Legal Events

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RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: WIENERBERGER BRICKS N.V.

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Effective date: 20060401