BE1008141A6 - Method and device for producing concrete elements. - Google Patents
Method and device for producing concrete elements. Download PDFInfo
- Publication number
- BE1008141A6 BE1008141A6 BE9400257A BE9400257A BE1008141A6 BE 1008141 A6 BE1008141 A6 BE 1008141A6 BE 9400257 A BE9400257 A BE 9400257A BE 9400257 A BE9400257 A BE 9400257A BE 1008141 A6 BE1008141 A6 BE 1008141A6
- Authority
- BE
- Belgium
- Prior art keywords
- concrete
- mold
- vibrations
- projections
- metal plate
- Prior art date
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
- E01F8/0029—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
L'invention concerne un procédé de compactage de béton par vibration et un dispositif pour le mettre en oeuvre. Le procédé s'applique sur le béton après qu'il est coulé dans un moule et implique que des vibrations sont appliquées sur la surface supérieure de l'élément en béton. Le dispositif est consitué d'une plaque métallique (15) disposée à proximité de l'ouverture supérieure du moule (10), la plaque (15) étant pourvue de saillies (16) qui s'étendent vers le bas et est raccordée à un générateur de vibrations (17) sur sa partie supérieure de façon que les vibrations émises par le générateur de vibrations (17) soient transmises au béton (11) à travers la plaque métallique (15) et ses saillies (16).The invention relates to a method of compacting concrete by vibration and a device for carrying it out. The method is applied to concrete after it is poured into a mold and involves that vibrations are applied to the upper surface of the concrete element. The device consists of a metal plate (15) disposed near the upper opening of the mold (10), the plate (15) being provided with projections (16) which extend downwards and is connected to a vibration generator (17) on its upper part so that the vibrations emitted by the vibration generator (17) are transmitted to the concrete (11) through the metal plate (15) and its projections (16).
Description
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DESCRIPTION Procédé et dispositif pour la fabrication d'éléments en béton.
La présente invention concerne un procédé et un dispositif pour la fabrication d'éléments en béton prêts à poser en particulier un procédé et un dispositif de compactage par vibration.
Le compactage du béton permet d'augmenter la densité et en même temps les caractéristiques physiques du béton en chassant l'air du béton en assurant ainsi un meilleur contact entre les granulats et le liant. Une méthode pour obtenir ce résultat consistait à faire vibrer la table sur laquelle le béton a été coulé.
Ce procédé se déroule sans problèmes dans la fabrication d'éléments d'une épaisseur réduite mais pose par contre des problèmes quand il s'agit d'éléments plus épais ou d'éléments constitués de plusieurs couches. Les vibrations émises par la table et le moule sont alors amorties par le volume de béton coulé dans le fond. Ainsi les vibrations atteignent difficilement la partie supérieure de l'élément, ce qui donne lieu à un élément de béton dont le côté supérieur de coulée présente des faiblesses structurelles.
S'agissant d'éléments composés de plusieurs couches de béton, le problème devient encore plus critique : après un délai de temps (environ 1/4 heure) à compter de la coulée d'une couche, toute vibration doit être évitée car elle atteint la prise du béton et pourrait encourir des risques d'instabilité du produit obtenu. Dans ce cas, il est nécessaire de ne pouvoir vibrer que la partie supérieure en laissant la partie inférieure intacte.
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Afin de remédier aux inconvénients mentionnés ci-dessus la présente invention propose un procédé et un dispositif permettant de vibrer la couche supérieure de l'élément en béton.
A cet effet le procédé et le dispositif comprend essentiellement les éléments tels que décrits dans les revendications.
L'invention est décrite ci-après à l'aide d'un exemple et de références aux dessins joints, dans lesquels :
La figure 1 est une vue schématique d'un moule rempli de béton avec à proximité de l'ouverture le dispositif de compactage selon l'invention.
La figure 2 est une vue en plan partielle de la surface supérieure de l'élément de béton démoulé.
La figure 3 est une vue en coupe d'une réalisation où on a disposé des écrans obtenus par l'utilisation de l'invention de manière à former un paroi d'isolation.
L'exemple de réalisation concerne la fabrication de panneaux d'isolation phonique
La figure 1 montre un moule 10 dans lequel on a coulé deux couches de béton de type différent. La couche inférieure 11 est avantageusement du béton lourd et la couche supérieure 12 du béton léger comme par exemple le béton-bois. La couche inférieure a été coulée et a commencé sa prise avant l'adjonction de la deuxième couche. A proximité de l'ouverture du moule on a disposé le dispositif conformément à l'invention. Ce dispositif comporte une plaque métallique 15 sur laquelle on a prévu des saillies 16 qui s'étendent vers le bas. Le coté supérieur de la plaque métallique 15 est pourvu d'un générateur de vibrations 17.
Les vibrations provenant du générateur de vibrations 17 sont alors transmises à la couche supérieure 11 du béton par l'intermédiaire de la plaque métallique 15 et les saillies 16.
Comme on peut le constater sur la figure 2, l'adjonction des saillies 16 à la plaque métallique 15 donne un aspect intéressant à une des faces de l'élément en béton. La partie du béton supérieure qui vient contre la plaque métallique 15 prend un aspect lisse 20. Aux endroits où sont disposées les saillies, des évidements de forme conique 21 sont apportés à l'élément en béton.
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La figure 3 montre un exemple d'application du procédé et du dispositif selon l'invention. L'exemple concerne le domaine d'insonorisation des endroits bruyants en plein-air comme par exemple des voies routières et ferroviaires. Pour combattre la nuisance acoustique on prévoit souvant des panneaux isolants aux bords des voies de communication se situant à proximité des quartiers d'habitation. Les panneaux sont maintenus en place par des poteaux 25.
Les panneaux sont eux-mêmes préalablement formés en deux couches, une couche de béton lourd 12 et une couche de béton-bois 11 qui assure les qualités d'isolation acoustique du panneau. La fabrication de ces panneaux est réalisée suivant le procédé décrit ci-dessus. Grâce au dispositif selon l'invention on a pu vibrer correctement la couche supérieure constituée de béton-bois. En plus le dispositif permet de donner à la surface supérieure un aspect qui augmente l'isolation acoustique.
Le dispositif selon l'invention facilite la fabrication en série car il permet de traiter simultanément des grandes surfaces de béton.
II est évident que ce procédé est aussi bien applicable à des éléments moins épais rien que pour obtenir les évidements fonctionnels ou ornementaux sur la surface supérieure de l'élément en béton.
<Desc / Clms Page number 1>
DESCRIPTION Process and device for manufacturing concrete elements.
The present invention relates to a method and a device for manufacturing ready-to-lay concrete elements, in particular a method and a device for compacting by vibration.
Compaction of the concrete increases the density and at the same time the physical characteristics of the concrete by expelling air from the concrete, thus ensuring better contact between the aggregates and the binder. One method of achieving this was to vibrate the table onto which the concrete was poured.
This process takes place without problems in the manufacture of elements of reduced thickness but poses problems on the other hand when it is a question of thicker elements or of elements made up of several layers. The vibrations emitted by the table and the mold are then absorbed by the volume of concrete poured into the bottom. Thus the vibrations hardly reach the upper part of the element, which gives rise to a concrete element whose upper casting side has structural weaknesses.
In the case of elements composed of several layers of concrete, the problem becomes even more critical: after a period of time (approximately 1/4 hour) from the pouring of a layer, any vibration must be avoided because it reaches setting of the concrete and could incur risks of instability of the product obtained. In this case, it is necessary to be able to vibrate only the upper part, leaving the lower part intact.
<Desc / Clms Page number 2>
In order to remedy the drawbacks mentioned above, the present invention provides a method and a device for vibrating the upper layer of the concrete element.
To this end, the method and the device essentially comprise the elements as described in the claims.
The invention is described below using an example and references to the accompanying drawings, in which:
Figure 1 is a schematic view of a mold filled with concrete near the opening the compacting device according to the invention.
Figure 2 is a partial plan view of the upper surface of the molded concrete element.
Figure 3 is a sectional view of an embodiment where the screens obtained by the use of the invention have been arranged so as to form an insulating wall.
The exemplary embodiment relates to the manufacture of sound insulation panels
FIG. 1 shows a mold 10 in which two layers of concrete of different types have been poured. The lower layer 11 is advantageously heavy concrete and the upper layer 12 is lightweight concrete such as concrete-wood. The bottom layer was poured and started to set before the second layer was added. Near the opening of the mold, the device was placed in accordance with the invention. This device comprises a metal plate 15 on which there are provided projections 16 which extend downwards. The upper side of the metal plate 15 is provided with a vibration generator 17.
The vibrations coming from the vibration generator 17 are then transmitted to the upper layer 11 of the concrete by means of the metal plate 15 and the projections 16.
As can be seen in FIG. 2, the addition of the projections 16 to the metal plate 15 gives an interesting appearance to one of the faces of the concrete element. The upper part of the concrete which comes against the metal plate 15 takes on a smooth appearance 20. At the places where the projections are arranged, conical-shaped recesses 21 are brought to the concrete element.
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FIG. 3 shows an example of application of the method and the device according to the invention. The example concerns the soundproofing area of noisy outdoor areas such as road and railways. To combat noise pollution, insulating panels are often provided at the edges of communication routes located near residential areas. The panels are held in place by posts 25.
The panels are themselves previously formed in two layers, a layer of heavy concrete 12 and a layer of concrete-wood 11 which provides the sound insulation qualities of the panel. The manufacture of these panels is carried out according to the method described above. Thanks to the device according to the invention, the upper layer made of concrete-wood was able to vibrate correctly. In addition, the device makes it possible to give the upper surface an appearance which increases the sound insulation.
The device according to the invention facilitates mass production because it makes it possible to treat large areas of concrete simultaneously.
It is obvious that this method is equally applicable to thinner elements just to obtain the functional or ornamental recesses on the upper surface of the concrete element.
Claims (9)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9400257A BE1008141A6 (en) | 1994-03-09 | 1994-03-09 | Method and device for producing concrete elements. |
FR9501654A FR2717115B3 (en) | 1994-03-09 | 1995-02-14 | Method and device for manufacturing concrete elements. |
LU88586A LU88586A1 (en) | 1994-03-09 | 1995-02-15 | Method and device for manufacturing concrete elements |
DE1995105314 DE19505314A1 (en) | 1994-03-09 | 1995-02-17 | Vibratory compacting of concrete cast in mould |
NL9500466A NL9500466A (en) | 1994-03-09 | 1995-03-08 | Method and device for manufacturing concrete elements. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9400257A BE1008141A6 (en) | 1994-03-09 | 1994-03-09 | Method and device for producing concrete elements. |
Publications (1)
Publication Number | Publication Date |
---|---|
BE1008141A6 true BE1008141A6 (en) | 1996-01-30 |
Family
ID=3888022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE9400257A BE1008141A6 (en) | 1994-03-09 | 1994-03-09 | Method and device for producing concrete elements. |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE1008141A6 (en) |
DE (1) | DE19505314A1 (en) |
FR (1) | FR2717115B3 (en) |
LU (1) | LU88586A1 (en) |
NL (1) | NL9500466A (en) |
-
1994
- 1994-03-09 BE BE9400257A patent/BE1008141A6/en not_active IP Right Cessation
-
1995
- 1995-02-14 FR FR9501654A patent/FR2717115B3/en not_active Expired - Fee Related
- 1995-02-15 LU LU88586A patent/LU88586A1/en unknown
- 1995-02-17 DE DE1995105314 patent/DE19505314A1/en not_active Withdrawn
- 1995-03-08 NL NL9500466A patent/NL9500466A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FR2717115B3 (en) | 1996-01-26 |
DE19505314A1 (en) | 1995-09-14 |
NL9500466A (en) | 1995-10-02 |
FR2717115A3 (en) | 1995-09-15 |
LU88586A1 (en) | 1995-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: S.A. ETS. E. RONVEAUX Effective date: 19970331 |