EP3524745B1 - Composant destiné à l'absorption de bruit - Google Patents

Composant destiné à l'absorption de bruit Download PDF

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Publication number
EP3524745B1
EP3524745B1 EP18211406.6A EP18211406A EP3524745B1 EP 3524745 B1 EP3524745 B1 EP 3524745B1 EP 18211406 A EP18211406 A EP 18211406A EP 3524745 B1 EP3524745 B1 EP 3524745B1
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EP
European Patent Office
Prior art keywords
ceiling
double wall
slab
hollow body
wall
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.)
Active
Application number
EP18211406.6A
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German (de)
English (en)
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EP3524745A1 (fr
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Pakon AG
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Pakon AG
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Publication of EP3524745A1 publication Critical patent/EP3524745A1/fr
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Publication of EP3524745B1 publication Critical patent/EP3524745B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
    • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8442—Tray type elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8452—Tray or frame type panels or blocks, with or without acoustical filling with peripheral frame members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/061—Non-reusable forms

Definitions

  • the invention relates to a panel ceiling element or a double wall element with a component and a method for producing a panel ceiling element or a double wall element with the component for sound absorption.
  • sound absorbers which are usually mounted on walls and ceilings in the form of panels. They usually have a porous structure which results in a corresponding flow resistance. Due to the resulting friction, the penetrating sound energy is converted into heat and friction. The sound waves are no longer reflected, but absorbed, i.e. not thrown back into the room.
  • the simplest sound absorbers known from the prior art are foam panels, for example convoluted foam or pyramid foam.
  • acoustic strips U-shaped profiles made of fiber concrete filled with expanded glass granulate as an acoustically effective part (absorber). This part is fixed with the U-shaped profile tied together.
  • acoustic strips are placed on a concrete formwork, for example, as concrete spacers for reinforcement of a reinforced concrete ceiling.
  • the acoustic material is cast directly into the concrete as a panel strip without a U-shaped profile.
  • the acoustic strips After completion of the ceiling or wall by pouring concrete, the acoustic strips are arranged on the visible side of the wall and the ceiling.
  • the absorbers in the form of expanded glass granulate filling are clearly visible. This visibility is fundamentally undesirable, so the acoustic strips have to be subsequently sealed with acoustic plaster.
  • this type of absorber is not intended for precast concrete parts. As mentioned, they are used for ceilings and walls that are cast on site.
  • the document AT 508 797 B1 shows a sound absorbing element which is mounted on the surface of a wall or ceiling.
  • the object of the present invention is to avoid at least one disadvantage resulting from the prior art.
  • the structural element for sound absorption in rooms which is not claimed as such, comprises a hollow body open on one side for installation flush with the surface in a ceiling or a wall with a floor and a side wall surrounding this floor.
  • the hollow body is preferably already installed during the production of a constructive element for the construction of the ceiling or the wall in a precast concrete plant.
  • the sound absorbers which represent a further part of the structural element not claimed as such, can only be inserted into the hollow bodies on site be used. Depending on the room and individual customer requirements, different types of sound absorbers can be selected.
  • the ceiling in which the components not claimed as such are used is accordingly preferably a slab ceiling, also known under the term filigree ceiling, for example in accordance with the reinforced concrete standard DIN 1045-1. It consists of slab ceiling elements in the form of large-format, 4 or 5 cm thick prefabricated reinforced concrete slabs, depending on the static requirements also 6 cm, which are supplemented on site with in-situ concrete up to the final ceiling thickness.
  • the S slab ceiling elements and the in-situ concrete form a solid bond with each other. This is ensured by the rough surface of the slab ceiling elements and steel lattice girders, which are concreted into the slab ceiling elements in the precast concrete plant.
  • the slab ceiling elements and the in-situ concrete therefore work together in exactly the same way as if the entire ceiling had been cast in one go.
  • a reinforcement layer for the slab ceiling is usually installed in the slab ceiling elements in the precast concrete plant.
  • the hollow bodies, which are open on one side, of the structural elements not claimed as such are preferably also integrated into the slab ceiling elements according to the invention. These are arranged flush with the visible side of the panel ceiling elements according to the invention and the panel ceiling made from them.
  • a wall in which the components not claimed as such are used is preferably a double wall, which is also referred to as an element wall.
  • element wall stands for the construction method in which the wall is built from prefabricated double wall elements. These exist made of two thin wall shells (e.g. 4.5 to 7.5 cm thick on the inside, each 5 to 7.5 cm thick on the outside), which are factory-connected by means of lattice girders with the remaining space in between. In the case of reinforced walls, the structurally required reinforcement is incorporated in whole or in part in the wall shells.
  • the usual dimensions for the double wall elements are heights of up to 3 m and lengths of up to 6 m.
  • the usual wall thicknesses are 18 - 42 cm.
  • the space between the two wall shells is filled with ready-mixed concrete so that the overall cross-section is monolithic after the concrete has hardened.
  • the visible concrete surfaces are smooth, even and tight.
  • the hollow bodies of the structural elements which are open on one side, are now preferably installed in the double-wall elements according to the invention already in the precast concrete plant, flush with the surface on the visible side of the element wall.
  • the component can also be closed with a cover, which is then placed on the open side of the hollow body. In the attached state, this is preferably arranged flush with the surface of the ceiling or wall.
  • this is a perforated cover, e.g. made of aluminum, stainless steel, plastic or special concrete.
  • Other options instead of a cover can be: a tension sail, fabric wallpaper or a stainless steel sheet in which openings have been lasered.
  • an edge strip is arranged on the side wall of the base, which surrounds an edge of the side wall partially or completely.
  • the skirting board runs flush with the visible side of the ceiling or wall.
  • a groove which is flush with the surface of the visible side of the ceiling or wall is located in the skirting board.
  • the cover mentioned or a sealing strip can be inserted or inserted into this groove during the production of a slab ceiling element or wall element according to the invention in the prefabricated concrete plant.
  • the sealing tape prevents concrete from penetrating into the hollow body. The sealing tape thus enables an accurate transition from the skirting board to the visible side of the ceiling or wall. Post-processing is no longer necessary because the edges are already beautifully designed.
  • the edge strip On the side that faces an inside of the hollow body, the edge strip has a fastening element for securing the sound absorber in position in the hollow body in a nondestructively detachable manner.
  • This can be an element for producing a latching connection, such as a projection or a spring element or a magnetic element. In this way, the sound absorber can be variably fixed in the hollow body.
  • the edge strip is made as an extrusion from a plastic material.
  • the open side of the hollow body When installed, the open side of the hollow body is aligned with the visible side of the ceiling or wall.
  • the sound absorber which can be mounted in the hollow body, thus has (without the cover being mounted) a visible side and another side which faces the bottom of the hollow body. There can be a cavity between the floor and the sound absorber.
  • an oscillating body for example a steel plate, a steel sheet or an aluminum foil, is arranged in this cavity in addition to the sound absorber.
  • the sound absorber itself preferably comprises a layer of sound-permeable material (e.g. expanded clay balls) and a broadband frequency absorber.
  • the bottom of the hollow body which faces the sound absorber when installed, can be at least partially made of a magnetic material, which allows it to be fixed with a certain contact pressure, for example on a steel formwork with magnetic means. That side of the floor which is adjacent to the ceiling or wall when installed can be provided with a coating that reduces sound transmission.
  • Other materials that are used for the floor and/or the side walls of the hollow body are: a thin-walled concrete shell, a thin-walled plastic shell, a thin-walled cardboard sleeve or a combination of thin-walled plastic sleeve and thin-walled metal sleeve.
  • the invention relates to a slab ceiling element or double wall element made of reinforced concrete and with lattice girders, in which the component is inserted flush with the surface.
  • the quality of the surface that is created corresponds to the quality of a fair-faced concrete surface.
  • a smooth, clean visible edge along the hollow body results from the use of the sealing tape mentioned in the production of the slab ceiling element according to the invention or the double wall element in the precast concrete plant.
  • the height of the component installed flush with the surface in the ceiling or wall in particular the height of the hollow body, preferably corresponds at most to the height of a prescribed concrete covering of a reinforcement.
  • the height of the hollow body is made up of the thickness of the floor including the coating, the height of the surrounding side wall and the edge strip.
  • the height of the hollow body is 30 mm, with a thickness of the panel ceiling element according to the invention of 50 mm.
  • the component can be relatively be formed over a large area without colliding with the reinforcement of the ceiling or wall.
  • the hollow body i.e. making it thicker, than the height of the prescribed concrete cover. This is particularly advantageous if a further improvement in the sound results is to be achieved.
  • the component has a relatively small area and usually engages between the reinforcement.
  • a method according to claim 14 according to the invention for the production of a panel ceiling element according to the invention or a double-wall element according to the invention having the component for sound absorption comprises the following steps: In a first step, at least one hollow body of a structural element is arranged with its open side resting on a formwork bed. A sound absorber is preferably not yet inserted into the hollow body, so that it is empty. The side wall of the hollow body has an edge strip with a groove in which a sealing strip is arranged.
  • a contact pressure of the hollow body and with it the sealing tape is generated against the formwork bed.
  • the formwork bed consists of a magnetic metal, for example a steel formwork as in a precast concrete plant
  • this contact pressure can be generated by magnetic means.
  • only the bottom of the hollow body has to be at least partially made of a magnetic material.
  • the magnetic means can consist of one or more magnets which are simply placed in the still empty hollow body between its bottom and the formwork bed.
  • the magnetic pressing means can be easily removed and reused.
  • a contact pressure for the sealing tape could also be generated in other ways, e.g. by mechanical means.
  • the building element 1 is shown installed in a ceiling 3 according to the invention, for example a slab ceiling, or a wall 4, for example a double wall according to the invention.
  • the slab ceiling according to the invention and the double wall according to the invention are, for example, precast concrete parts from a precast concrete plant, the final assembly of which takes place on the construction site.
  • the structural element 1 according to the invention, in particular the hollow body 2 is already integrated into the ceiling 3 or the wall 4 in the precast concrete plant.
  • the installation of the sound absorber (30) is then preferably carried out, adapted to the customer's individual requirements, on site at the construction site.
  • the component 1 comprises a hollow body 2 which sits flush with the surface in the wall 3 or the ceiling 4 .
  • the hollow body 2 comprises a base 21 with a side wall 22.
  • a rim 6 runs on the edge of the side wall 22.
  • the rim 6 has a first groove 61 for receiving a cover 5.
  • the edge strip 6 also includes fastening means 62 for securing the position of a sound absorber 30 in a non-destructive, detachable manner.
  • the edge strip 6 also includes fastening means 63 for fixing the hollow body 21 in the ceiling 4 or the wall 3.
  • the sound absorber 30 is arranged in the hollow body 2 . If necessary, this can also be removed and replaced with another sound absorber.
  • the bottom 21 of the hollow body 2 and possibly also its side wall 22 have a first layer 24, which is a layer that reduces the transmission of sound, for example a flexible polyurethane foam.
  • side of the floor 21 which faces the sound absorber 30 in the installed state is at least partially made of a magnetic material 23 .
  • the component 1 is in the in 1 embodiment shown closed by a cover 5.
  • the cover 5 runs flush with the surface of the wall 3 or the ceiling 4.
  • the cover 5 is designed, for example, as a perforated cover. When installed, the sound absorber 30 lies behind the cover 5.
  • the cover 5 can be designed in the following variants: as a perforated sheet, as a tension sail, as fabric wallpaper or as a stainless steel sheet into which openings have been lasered.
  • FIG 2 Another embodiment of the component 1 is shown, although the hollow body 2 and the cover 5 are identical to the embodiment from FIG figure 1 are, which is why they have been provided with the same reference numerals.
  • the sound absorber 35 Unlike in the embodiment after figure 1 designed is the sound absorber 35.
  • the first part 35C Seen from the visible side of the wall or ceiling, the first part 35C is a layer of cement-bound expanded clay, followed by the second part 35B Layer of foam, for example based on polyurethane.
  • a third part 35A in the form of a so-called resonant oscillator, which lies behind the layer 35B as seen from the visible side of the wall or the ceiling. in the in figure 2 shown embodiment, it is a steel plate 35A.
  • FIG 3 Figure 1 shows the embodiment of the device figure 2 . Identical parts have therefore been given the same reference symbols.
  • the hollow body 2 is in the ceiling 3, here a slab ceiling element according to the invention (also called filigree slab) used. This is, for example, the "delivery condition" from the ready-mixed concrete plant.
  • the slab ceiling element according to the invention is eg 50 mm thick and made of reinforced concrete 37 with lattice girders 32 .
  • the hollow body 2 which later accommodates the sound absorber 35 is located under the reinforcement 37. With a height of the hollow body 2 of around 20-30 mm, this corresponds to the height of a legally prescribed concrete cover for reinforcements.
  • the hollow body 2 thus also serves as a concrete spacer during production of the slab ceiling element.
  • the edge strip 6 is flush with the surface of the slab ceiling element 3 .
  • the sound absorber 35 or other design variants of sound absorbers can be used on site at the construction site according to customer requirements and can be provided with the desired cover 5 .
  • figure 4 shows schematically a section of a slab ceiling element 31 according to the invention and a double wall element 41 according to the invention, each with an installed component 1 made of reinforced concrete with lattice girders 32, 42.
  • the surfaces 33, 44 shown correspond to the quality of a fair-faced concrete surface. Recognizable in figure 4 is the arrangement of the components in the concrete cover 34, 45 under or next to a reinforcement 37, 47.
  • FIG figure 5 shows a partial step of a method for producing a panel ceiling element 31 according to the invention with built-in component 1.
  • that side of the floor 21 which later faces the sound absorber 30 is preferably at least partially made of a magnetic material 23 .
  • the hollow body 2 when concreting the slab cover element 31 according to the invention or the double wall element 41 according to the invention, the hollow body 2 can be fixed with magnetic means (in figure 5 only shown schematically with a double arrow) are pressed against the formwork bed so that no concrete can penetrate into the hollow body 2 and a smooth edge along the sealing strip 7 is formed.
  • the magnetic means can be easily removed after demolding without leaving any traces on the formwork bed or in the hollow body.
  • contact pressure for the sealing tape can of course also be generated mechanically, for example by means of a threaded rod with a nut that is inserted through a hole in the hollow body and glued to the formwork using a plate with adhesive. After removing the formwork, the threaded rod can either be unscrewed or broken off at a predetermined breaking point.

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

Claims (15)

  1. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42), avec un élément de construction (1) incorporé à fleur de surface d'une surface (33, 44) de la dalle de plafond (3) ou de la paroi double (4) pour l'absorption des bruits dans des locaux comprenant un corps creux (2) ouvert d'un côté pour le montage à fleur de surface dans un plafond ou un mur (3,4), avec un fond (21) et une paroi latérale (22) entourant ce fond (21), sachant que la paroi latérale (22) comporte sur son bord périphérique un rebord (6), qui entoure en partie ou complètement ce bord, sachant qu'à l'état monté, le rebord (6) passe à fleur de surface du plafond (3) ou du mur (4) et un amortisseur de bruits (30) pouvant être inséré dans l'espace creux (2) après montage de celui-ci dans le plafond ou le mur.
  2. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon la revendication 1, sachant que l'élément de construction peut être fermé à l'état monté dans le plafond ou le mur, par un couvercle (5), de préférence un couvercle perforé, qui peut être placé sur le côté ouvert du corps creux (2) et est à l'état posé à fleur de surface du plafond (3) ou du mur (4).
  3. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon la revendication 1, sachant que le rebord (6) comporte une première rainure (61), laquelle passe, à l'état monté, à fleur de surface du plafond (3) ou du mur (4).
  4. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon la revendication 3, sachant que le couvercle (5) ou une bande d'étanchéité (7) peut être inséré ou est inséré dans la première rainure (61).
  5. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon l'une quelconque des revendications précédentes 1 à 4, sachant que le rebord (6) comporte sur le côté qui est tourné vers un côté intérieur du corps creux (2), un élément de fixation (62), de préférence pour la fixation de support à nouveau amovible de façon non destructive de l'amortisseur de bruits (30) dans le corps creux (2).
  6. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon l'une quelconque des revendications précédentes 1 à 5, sachant que le rebord (6) comporte sur le côté qui jouxte à l'état monté, le plafond (3) ou le mur (4), un élément de fixation (63) pour fixer l'élément de construction (1) dans le plafond (3) ou le mur (4).
  7. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon l'une quelconque des revendications précédentes 1 à 6, sachant que le rebord (6) est une pièce extrudée, de préférence dans une matière plastique.
  8. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon l'une quelconque des revendications précédentes, sachant que l'amortisseur de bruits (30) est logé, à l'état monté, du côté ouvert du corps creux (2), sachant que l'amortisseur de bruits (30) est disposé à distance sur le côté du fond (21) qui est tourné vers l'amortisseur de bruits (30), de telle manière qu'entre ce côté du fond (21) et l'amortisseur de bruits (30) est formé un espace creux (8) .
  9. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon la revendication 8, sachant que dans l'espace creux (8) est disposé un corps oscillant, de préférence une plaque d'acier, une tôle d'acier ou également seulement une feuille d'aluminium.
  10. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon l'une quelconque des revendications précédentes, sachant que chaque côté du fond (21), qui est tourné, à l'état monté, vers l'amortisseur de bruits (30), est réalisé au moins en partie dans un matériau magnétique (23).
  11. Élément de dalle de plafond (31) ou élément de paroi double (41) en béton armé (37) et avec des poutres en treillis (32, 42) selon l'une quelconque des revendications précédentes, sachant qu'au moins chaque côté du fond (21), qui vient jouxter à l'état monté, le plafond (3) ou le mur (4), est doté d'un revêtement (24) réduisant la transmission des bruits.
  12. Élément de dalle de plafond (31) ou élément de paroi double (41) selon l'une quelconque des revendications précédentes, sachant que la surface nommée (33, 34) présente la qualité d'une surface de béton apparent.
  13. Élément de dalle de plafond (31) ou élément de paroi double (41) selon l'une quelconque des revendications précédentes, sachant que l'élément de construction (1) incorporé dedans à fleur de surface, correspond dans sa hauteur au maximum à la hauteur d'une couverture en béton (34, 35) réglementaire de l'armature (37, 47).
  14. Procédé de fabrication d'un élément de dalle de plafond ou d'un élément de paroi double selon la revendication 4 sur un lit de coffrage (9), sachant qu'un élément de construction (1) avec un rebord (6) avec une première rainure (61) et une bande d'étanchéité (7) insérée dedans est utilisé, sachant que la paroi latérale (22) du corps creux (2) avec la bande latérale (7) est comprimée contre le lit de coffrage (9) lors du bétonnage de l'élément de dalle de plafond (31) ou de l'élément de paroi double (41) de telle manière qu'aucun béton ne peut pénétrer dans le corps creux (2) et qu'une arête lisse est créée le long de la bande d'étanchéité (7) .
  15. Procédé selon la revendication 14 pour la fabrication d'un élément de dalle de plafond ou d'un élément de paroi double selon la revendication 10, sachant qu'un lit de coffrage (9) en métal magnétique ainsi qu'un fond (21) dans un matériau au moins en partie magnétique sont utilisés et sachant que lors du bétonnage, l'élément de construction avec des moyens magnétiques est comprimé contre le lit de coffrage (9).
EP18211406.6A 2018-02-12 2018-12-10 Composant destiné à l'absorption de bruit Active EP3524745B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00166/18A CH714639A2 (de) 2018-02-12 2018-02-12 Bauelement zur Schallabsorption in Räumen.

Publications (2)

Publication Number Publication Date
EP3524745A1 EP3524745A1 (fr) 2019-08-14
EP3524745B1 true EP3524745B1 (fr) 2023-03-22

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CH (1) CH714639A2 (fr)

Citations (1)

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US3864888A (en) * 1973-05-22 1975-02-11 Kaiser Gypsum Company Inc Apparatus and method for employing gypsum board as forms for poured concrete ceiling and floor structures
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AT508797B1 (de) * 2009-09-17 2011-07-15 Friedrich Ing Mag Blaha Modifizierbares schalldämpfungselement

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CH714639A2 (de) 2019-08-15

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