EP0350420A1 - Sound-absorbing screen - Google Patents
Sound-absorbing screen Download PDFInfo
- Publication number
- EP0350420A1 EP0350420A1 EP89470013A EP89470013A EP0350420A1 EP 0350420 A1 EP0350420 A1 EP 0350420A1 EP 89470013 A EP89470013 A EP 89470013A EP 89470013 A EP89470013 A EP 89470013A EP 0350420 A1 EP0350420 A1 EP 0350420A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen according
- mineral
- layer
- sound
- acoustic
- 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.)
- Granted
Links
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 10
- 239000011707 mineral Substances 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 230000002745 absorbent Effects 0.000 claims description 8
- 239000002250 absorbent Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 239000011800 void material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- E01F8/0029—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 present invention relates to an absorbent acoustic screen. More particularly, it relates to a two-layer composite panel for sound absorption.
- Noise protection appeared as a necessity to insulate dwellings against the increasingly important noise coming from road or railway axes, on which the traffic has considerably increased during the last years.
- acoustic protection can be achieved, in particular, when it is necessary to act on the sound source, by the construction of screens, semi-covering or covering of the axis causing the nuisance.
- semi-coverage solutions and a fortiori full coverage solutions remain exceptional because of their very high cost.
- Acoustic screens of known type generally consist of prefabricated concrete panels, with architectural facing, or in masonry, secured to a concrete sole. It is therefore a heavy construction, even more difficult to carry out when the work aims to equip an existing axis, on which it is necessary to avoid bringing traffic restrictions by the presence of construction machinery or even by a simple narrowing of the pavement.
- acoustic screens usually used are in the form of perforated metal screens with the incorporation of glass wool, or facing in terracotta, foam clay or agglomerated wood. They then have the drawbacks of questionable aesthetics, poor adaptation to rehabilitation, that is to say the treatment of existing structures, and sensitivity to corrosion. In addition, many of these screens reflect sounds either towards vehicles, which makes driving more tiring, or towards the upper floors of waterfront buildings which, normally, should be less exposed to noise due to their distance.
- the present invention overcomes these drawbacks. It relates to an absorbent acoustic screen, of the type constituted by a composite panel having a layer of mineral absorbent and a layer of mineral product transparent to sound, the latter being a coating in resin mortar having a proportion of voids between 30 and 50%.
- the panel according to the invention is light, solid and weather resistant, while having good sound absorption, and it offers possibilities for various aesthetic compositions.
- the composite panel consists of an absorbent material 1 and an aesthetic coating in resin mortar 2. More particularly, the absorbent material is in the form of a flat sheet made of glass fibers 3 compressed and bound by a resin 4. Preferably, this material corresponds to that sold by the company ISOVER SAINT-GOBAIN under the registered trademark "STRATIGLASS".
- the resin mortar is composed of aggregates 5 linked by a resin 6, but so as to leave a large proportion of voids 7 between them.
- the particle size of the aggregates is advantageously chosen in the range 4-6 mm.
- the aggregates are preferably siliceous in nature, tinted either in the mass or on the surface.
- the resin chosen for example of epoxy nature, is colorless.
- the proportion of voids in the so-called “hollow” mortar is between 30% and 50%, for example 40%.
- This mortar is advantageously that sold under the registered trademark "CHROMOROC” and it was the subject of patent application FR 87-14 618 from the company PIC CONSEIL.
- the resin which binds the aggregates together also serves to make them integral with the glass fiber support.
- a panel according to the invention has a thickness of approximately 20 mm, of which 12 mm for the layer of compressed glass fibers and 8 mm for the hollow mortar at 40% vacuum, this percentage being expressed in ratio of the interstices of the mortar to the total surface of the coating. Under these conditions, the weight of a 1 m2 panel is 17 kg, which is particularly light.
- the panel according to the invention is mounted at the edge of the axes with heavy traffic, vertically or slightly inclined in the known manner, the layer formed by the mineral coating of hollow mortar being directed towards the sound source.
- This panel can be arranged according to the usual modes of construction: - By mounting on an existing wall using the ventilated cladding technique, the air space being interposed between the wall and the sheet of compressed glass fibers; - By integration into a heavy wall forming a support on which the glass fiber sheet is directly applied; - by association with semi-thick or thin, easily modular tubs.
- the mineral coating formed by the hollow mortar has good resistance to weathering and corrosion, as well as good acoustic absorption since its proportion of voids allows the passage of sounds which are then absorbed by the compressed glass fiber.
- the aggregates can be tinted in the mass or on the surface, all freedom is left to the designer to vary the colors and thus bring the desired decorative and aesthetic appearance.
- the coating which is anti-graffiti, integrates easily with other materials to form high-performance products, usable in the rehabilitation of existing screens or in new installations.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Laminated Bodies (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
La présente invention est relative à un écran acoustique absorbant. Plus particulièrement, elle concerne un panneau composite bi-couche pour l'absorption des sons.The present invention relates to an absorbent acoustic screen. More particularly, it relates to a two-layer composite panel for sound absorption.
La protection anti-bruit est apparue comme une nécessité pour isoler des habitations contre le bruit de plus en plus important provenant d'axes routiers ou ferroviaires, sur lesquels le trafic s'est considérablement accru durant les dernières années.Noise protection appeared as a necessity to insulate dwellings against the increasingly important noise coming from road or railway axes, on which the traffic has considerably increased during the last years.
Différents types de protection acoustique peuvent être réalisés notamment, lorsqu' il faut agir sur la source sonore, par la construction d'écrans, de semi-couverture ou de couverture de l'axe à l'origine de la nuisance. Toutefois, les solutions de semi-couverture et a fortiori de couverture complète restent exceptionnelles à cause de leur coût très élevé. Les écrans acoustiques de type connu sont généralement constitués de panneaux préfabriqués en béton, avec parement architectonique, ou en maçonnerie, solidaires d'une semelle en béton. Il s'agit donc d'une construction lourde, encore plus difficile à réaliser lorsque les travaux visent à équiper un axe existant, sur lequel il faut éviter d'apporter des restrictions à la circulation par la présence d'engins de chantier ou même par un simple rétrécissement de la chaussée.Different types of acoustic protection can be achieved, in particular, when it is necessary to act on the sound source, by the construction of screens, semi-covering or covering of the axis causing the nuisance. However, semi-coverage solutions and a fortiori full coverage solutions remain exceptional because of their very high cost. Acoustic screens of known type generally consist of prefabricated concrete panels, with architectural facing, or in masonry, secured to a concrete sole. It is therefore a heavy construction, even more difficult to carry out when the work aims to equip an existing axis, on which it is necessary to avoid bringing traffic restrictions by the presence of construction machinery or even by a simple narrowing of the pavement.
D'autres écrans acoustiques habituellement utilisés se présentent sous forme d'écrans métalliques perforés avec incorporation de laine de verre, ou de parements en terre cuite, en mousse d'argile ou agglomérés de bois. Ils présentent alors les inconvénients d'une esthétique discutable, d'une mauvaise adaptation à la réhabilitation, c'est-à-dire au traitement d'ouvrages existants, et d'une sensibilité à la corrosion. De plus, beaucoup de ces écrans réfléchissent les sons soit vers les véhicules, ce qui en rend la conduite plus fatigante, soit vers les étages supérieurs des immeubles riverains qui, normalement, devraient être moins exposés au bruit grâce à leur éloignement.Other acoustic screens usually used are in the form of perforated metal screens with the incorporation of glass wool, or facing in terracotta, foam clay or agglomerated wood. They then have the drawbacks of questionable aesthetics, poor adaptation to rehabilitation, that is to say the treatment of existing structures, and sensitivity to corrosion. In addition, many of these screens reflect sounds either towards vehicles, which makes driving more tiring, or towards the upper floors of waterfront buildings which, normally, should be less exposed to noise due to their distance.
La présente invention remédie à ces inconvénients. Elle a pour objet un écran acoustique absorbant, du type constitué par un panneau composite présentant une couche d'absorbant minéral et une couche de produit minéral transparent aux sons, ce dernier étant un revêtement en mortier de résine présentant une proportion de vides comprise entre 30 et 50 %.The present invention overcomes these drawbacks. It relates to an absorbent acoustic screen, of the type constituted by a composite panel having a layer of mineral absorbent and a layer of mineral product transparent to sound, the latter being a coating in resin mortar having a proportion of voids between 30 and 50%.
Le panneau suivant l'invention est léger, solide et résistant aux intempéries, tout en présentant une bonne absorption acoustique, et il offre des possibilités de compositions esthétiques variées.The panel according to the invention is light, solid and weather resistant, while having good sound absorption, and it offers possibilities for various aesthetic compositions.
D'autres caractéristiques et avantages apparaîtront au cours de la description qui va suivre, donnée uniquement à titre d'exemple non limitatif et en regard de la figure annexée qui représente une coupe transversale d'un panneau suivant l'invention.Other characteristics and advantages will appear during the description which follows, given solely by way of nonlimiting example and with reference to the appended figure which represents a cross section of a panel according to the invention.
Conformément à l'invention, le panneau composite est constitué d'un matériau absorbant 1 et d'un revêtement esthétique en mortier de résine 2. Plus particulièrement, le matériau absorbant se présente sous la forme d'une feuille plane constituée de fibres de verre 3 comprimées et liées par une résine 4. De préférence, ce matériau correspond à celui commercialisé par la Société ISOVER SAINT-GOBAIN sous la marque déposée "STRATIGLASS".According to the invention, the composite panel consists of an absorbent material 1 and an aesthetic coating in
Le mortier de résine est composé d'agrégats 5 liés par une résine 6, mais de manière à laisser subsister entre eux une proportion importante de vides 7. A cet effet, la granulométrie des agrégats est choisie avantageusement dans la plage 4-6 mm. Les agrégats sont de préférence de nature siliceuse, teintés soit dans la masse, soit en surface. La résine, choisie par exemple de nature époxydique, est incolore. La proportion de vides dans le mortier dit "creux" est comprise entre 30 % et 50 %, par exemple 40 %. Ce mortier est avantageusement celui commercialisé sous la marque déposée "CHROMOROC" et il a fait l'objet de la demande de brevet FR 87-14 618 de la Société PIC CONSEIL. La résine qui lie les agrégats entre eux sert également à les rendre solidaires du support en fibres de verre.The resin mortar is composed of
Suivant un exemple de réalisation particulière, un panneau suivant l'invention présente une épaisseur de 20 mm environ dont 12 mm pour la couche de fibres de verre comprimées et 8 mm pour le mortier creux à 40 % de vide, ce pourcentage s'exprimant en rapport des interstices du mortier à la surface totale du revêtement. Dans ces conditions, le poids d'un panneau de 1 m2 est de 17 kg, ce qui est particulièrement léger.According to a particular embodiment, a panel according to the invention has a thickness of approximately 20 mm, of which 12 mm for the layer of compressed glass fibers and 8 mm for the hollow mortar at 40% vacuum, this percentage being expressed in ratio of the interstices of the mortar to the total surface of the coating. Under these conditions, the weight of a 1 m2 panel is 17 kg, which is particularly light.
Le panneau suivant l'invention est monté en bordure des axes à circulation intense, verticalement ou légèrement incliné selon la manière connue, la couche constituée par le revêtement minéral de mortier creux étant dirigée vers la source sonore. Ce panneau peut être disposé selon les modes habituels de construction :
- par montage sur un mur existant suivant la technique du bardage ventilé, la lame d'air étant interposée entre le mur et la feuille de fibres de verre comprimées ;
- par intégration à une paroi lourde formant support sur lequel est appliquée directement la feuille de fibres de verre ;
- par association avec des bacs semi-épais ou minces facilement modulables.The panel according to the invention is mounted at the edge of the axes with heavy traffic, vertically or slightly inclined in the known manner, the layer formed by the mineral coating of hollow mortar being directed towards the sound source. This panel can be arranged according to the usual modes of construction:
- By mounting on an existing wall using the ventilated cladding technique, the air space being interposed between the wall and the sheet of compressed glass fibers;
- By integration into a heavy wall forming a support on which the glass fiber sheet is directly applied;
- by association with semi-thick or thin, easily modular tubs.
On obtient ainsi un panneau facile à manipuler, mais solide. De plus, le revêtement minéral constitué par le mortier creux présente une bonne tenue aux intempéries et à la corrosion, ainsi qu'une bonne absorption acoustique puisque sa proportion de vides autorise le passage des sons qui sont ensuite amortis par la fibre de verre comprimée. Comme les granulats peuvent être teintés dans la masse ou en surface, toute liberté est laissée au concepteur pour varier les teintes et apporter ainsi l'aspect décoratif et esthétique recherché. Enfin, le revêtement qui est anti-graffiti s'intègre aisément avec d'autres matériaux pour former des produits performants, utilisables en réhabilitation d'écrans existants ou en nouvelle implantation.This gives a panel that is easy to handle, but solid. In addition, the mineral coating formed by the hollow mortar has good resistance to weathering and corrosion, as well as good acoustic absorption since its proportion of voids allows the passage of sounds which are then absorbed by the compressed glass fiber. As the aggregates can be tinted in the mass or on the surface, all freedom is left to the designer to vary the colors and thus bring the desired decorative and aesthetic appearance. Finally, the coating, which is anti-graffiti, integrates easily with other materials to form high-performance products, usable in the rehabilitation of existing screens or in new installations.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89470013T ATE100162T1 (en) | 1988-07-07 | 1989-06-30 | NOISE ABSORBING SCREEN. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8809433 | 1988-07-07 | ||
| FR8809433A FR2633953B1 (en) | 1988-07-07 | 1988-07-07 | ABSORBENT ACOUSTIC SCREEN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0350420A1 true EP0350420A1 (en) | 1990-01-10 |
| EP0350420B1 EP0350420B1 (en) | 1994-01-12 |
Family
ID=9368339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89470013A Expired - Lifetime EP0350420B1 (en) | 1988-07-07 | 1989-06-30 | Sound-absorbing screen |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0350420B1 (en) |
| AT (1) | ATE100162T1 (en) |
| DE (1) | DE68912219D1 (en) |
| FR (1) | FR2633953B1 (en) |
| PT (1) | PT91087B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2729682A1 (en) * | 1995-01-20 | 1996-07-26 | Spie Citra | Acoustic sound absorbing screens for motorways |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7513194U (en) * | 1975-09-04 | Beton Und Monierbau Ag | Pre-fabricated part for a protective wall against noise immissions | |
| DE2951027B1 (en) * | 1979-12-19 | 1981-06-11 | Albert 4270 Dorsten Stewing | Changing element for a noise barrier |
| AT363507B (en) * | 1976-01-14 | 1981-08-10 | Kranebitter Ges M B H Betonwer | AREA SOUND PROTECTIVE ELEMENT |
| DE8231009U1 (en) * | 1982-11-05 | 1983-02-17 | Schulz, Herbert, 4000 Düsseldorf | NOISE PROTECTION WALL |
| DE8316339U1 (en) * | 1983-06-03 | 1983-11-17 | Lemmen, Bernward, 5000 Köln | Noise barrier |
| DE3338303A1 (en) * | 1983-10-21 | 1985-05-02 | Ed. Züblin AG, 7000 Stuttgart | Sound-absorbing structural member for soundproofing walls on bridges |
-
1988
- 1988-07-07 FR FR8809433A patent/FR2633953B1/en not_active Expired - Lifetime
-
1989
- 1989-06-30 AT AT89470013T patent/ATE100162T1/en not_active IP Right Cessation
- 1989-06-30 EP EP89470013A patent/EP0350420B1/en not_active Expired - Lifetime
- 1989-06-30 DE DE89470013T patent/DE68912219D1/en not_active Expired - Lifetime
- 1989-07-06 PT PT91087A patent/PT91087B/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7513194U (en) * | 1975-09-04 | Beton Und Monierbau Ag | Pre-fabricated part for a protective wall against noise immissions | |
| AT363507B (en) * | 1976-01-14 | 1981-08-10 | Kranebitter Ges M B H Betonwer | AREA SOUND PROTECTIVE ELEMENT |
| DE2951027B1 (en) * | 1979-12-19 | 1981-06-11 | Albert 4270 Dorsten Stewing | Changing element for a noise barrier |
| DE8231009U1 (en) * | 1982-11-05 | 1983-02-17 | Schulz, Herbert, 4000 Düsseldorf | NOISE PROTECTION WALL |
| DE8316339U1 (en) * | 1983-06-03 | 1983-11-17 | Lemmen, Bernward, 5000 Köln | Noise barrier |
| DE3338303A1 (en) * | 1983-10-21 | 1985-05-02 | Ed. Züblin AG, 7000 Stuttgart | Sound-absorbing structural member for soundproofing walls on bridges |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2729682A1 (en) * | 1995-01-20 | 1996-07-26 | Spie Citra | Acoustic sound absorbing screens for motorways |
Also Published As
| Publication number | Publication date |
|---|---|
| DE68912219D1 (en) | 1994-02-24 |
| FR2633953B1 (en) | 1992-01-17 |
| ATE100162T1 (en) | 1994-01-15 |
| EP0350420B1 (en) | 1994-01-12 |
| FR2633953A1 (en) | 1990-01-12 |
| PT91087A (en) | 1990-02-08 |
| PT91087B (en) | 1995-07-03 |
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