CH689674A5 - concrete floor slab and for the realization of this floor. - Google Patents

concrete floor slab and for the realization of this floor. Download PDF

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Publication number
CH689674A5
CH689674A5 CH3894A CH3894A CH689674A5 CH 689674 A5 CH689674 A5 CH 689674A5 CH 3894 A CH3894 A CH 3894A CH 3894 A CH3894 A CH 3894A CH 689674 A5 CH689674 A5 CH 689674A5
Authority
CH
Switzerland
Prior art keywords
passages
floor
slab
cells
floor according
Prior art date
Application number
CH3894A
Other languages
French (fr)
Inventor
Maurice Durot
Original Assignee
Bouygues Sa
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 Bouygues Sa filed Critical Bouygues Sa
Publication of CH689674A5 publication Critical patent/CH689674A5/en

Links

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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E04B5/043—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement having elongated hollow cores
    • 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
    • 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
    • E04B1/86—Sound-absorbing elements slab-shaped
    • 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
    • E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8485—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the opening being restricted, e.g. forming Helmoltz resonators
    • 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
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/849—Groove or slot type openings

Landscapes

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

Description

       

  
 



  L'invention concerne un plancher en béton constitué d'une couche en dalles de béton préfabriquées comportant des alvéoles internes, filants selon la longueur d'une dalle, d'une couche résiliente déposée sur les dalles et d'une chape flottante coulée in-situ sur la couche résiliente. 



  La couche résiliente est généralement un matelas préfabriqué en fibres minérales, d'une épaisseur d'au moins 1 cm. 



  La chape flottante est obtenue in-situ par mélange d'un matériau hydraulique durcissable avec de l'eau. Elle est généralement en béton ou en mortier. 



  L'invention vise à perfectionner ce plancher connu en soi pour améliorer ses propriétés d'isolation acoustique, notamment sa capacité à arrêter les bruits dûs aux impacts. 



  Jusqu'à présent, on a cherché à obtenir cette amélioration en augmentant la section des alvéoles et/ou l'épaisseur du matelas résilient mais ces augmentations sont rapidement limitées pour différentes raisons. 



  Selon l'invention, on a découvert qu'une augmentation notable de la capacité d'un tel plancher à ne pas transmettre les bruits d'impacts est obtenue quand on munit les dalles préfabriquées de multiples passages faisant communiquer les alvéoles et la couche résiliente, ces passages ayant un diamètre d'au moins 2 cm et étant espacés d'au moins 5 cm. 



  Le mot diamètre désigne le diamètre réel s'il s'agit de passages à section droite circulaire ou le diamètre équivalent, c'est-à-dire le diamètre de la section droite circulaire de même aire s'il s'agit de passages à section droite non circulaire. 



  Ces passages sont réalisables industriellement à la fabrication des dalles, par exemple en disposant un rouleau muni d'ergots appropriés à la sortie de l'extrudeuse utilisée pour fabriquer les dalles. 



  Les figures du dessin joint illustrent un exemple d'un plancher conforme à l'invention. 
 
   - la fig. 1 est une perspective partielle d'une dalle alvéolée du plancher; 
   - la fig. 2 est une coupe longitudinale du plancher selon l'axe d'un alvéole; 
   - la fig. 3 est une coupe transversale du plancher; et 
   - la fig. 4 est une coupe montrant une variante d'alvéole. 
 



  Le plancher représenté est constitué de dalles épaisses 1 en béton, d'un matelas préfabriqué de flbres minérales 2 (laine de verre ou laine de roche) appliqué sur les dalles et d'une chape flottante 3 en béton coulée in-situ sur le matelas. 



  Les dimensions d'une dalle sont typiquement:
 - longueur: 2,5 à 15 m,
 - largeur inférieure: à 2,50 m,
 - épaisseur: 8 à 50 cm 



  Les épaisseurs des autres couches sont:
 - matelas résilient: 2 à 10 cm,
 - chape flottante: 2 à 12 cm 



  L'épaisseur totale du plancher est de 15 à       60 cm. 



  Les dalles sont destinées à reposer sur des appuis (poteaux ou murs) de façon en soi connue. 



  Conformément à l'invention, la dalle épaisse 1 comporte une nappe d'alvéoles tubulaires 4 filants selon la longueur de la dalle et dont la section constitue environ 20 à 60% de la section totale de la dalle 1, et des passages constitués par des fentes 5 de largeur 1 à 4 cm, et de 10 à 60 cm de longueur, espacées de 10 à 60 cm, qui font communiquer les alvéoles avec la face de la dalle qui est au contact du matelas de fibres. Les fentes s'étendent parallèlement à la longueur de la dalle. 



  Les alvéoles ont toute forme voulue. Par exemple, ils ont une section droite de forme circulaire ou ovale. Les fig. 3 et 4 montrent pour l'exemple deux formes d'alvéoles. 



  Les passages qui concernent deux files voisines d'alvéoles sont disposés en vis à vis ou sont décalés en quinconce. 



  En variante, les fentes sont remplacées par des passages tubulaires de diamètre 2 à 4 cm espacés de 5 à 30 cm. 



  En variante, les passages ont un diamètre réel ou équivalent de 2 à 6 cm et ont un entreaxe de 20 cm à 1 mètre. 



  La structure se comporte, du point de vue acoustique, comme un complexe masse-ressort-masse qui constitue un bon isolant acoustique contre la transmission des bruits aériens et la transmission des bruits d'impacts, avec une amélioration d'au moins 3 à 10 dB en ce qui concerne ces derniers bruits. 



  Le plancher de l'invention peut comporter, selon les cas, des revêtements solidaires ou simplement attenants, de façon en soi connue. 



  
 



  The invention relates to a concrete floor consisting of a layer of prefabricated concrete slabs comprising internal cells, running along the length of a slab, a resilient layer deposited on the slabs and a floating pouring screed. located on the resilient layer.



  The resilient layer is generally a prefabricated mattress made of mineral fibers, at least 1 cm thick.



  The floating screed is obtained in situ by mixing a hardenable hydraulic material with water. It is generally made of concrete or mortar.



  The invention aims to improve this floor known per se to improve its acoustic insulation properties, in particular its ability to stop noise due to impacts.



  Up to now, we have sought to obtain this improvement by increasing the section of the cells and / or the thickness of the resilient mattress, but these increases are quickly limited for various reasons.



  According to the invention, it has been discovered that a significant increase in the capacity of such a floor not to transmit impact noises is obtained when the prefabricated tiles are provided with multiple passages making the cells and the resilient layer communicate, these passages having a diameter of at least 2 cm and being spaced at least 5 cm.



  The word diameter designates the actual diameter in the case of passages with a circular cross section or the equivalent diameter, that is to say the diameter of the circular cross section with the same area in the case of passages with non-circular cross section.



  These passages are achievable industrially in the manufacture of slabs, for example by placing a roller provided with suitable lugs at the outlet of the extruder used to manufacture the slabs.



  The figures of the accompanying drawing illustrate an example of a floor according to the invention.
 
   - fig. 1 is a partial perspective of a honeycomb slab of the floor;
   - fig. 2 is a longitudinal section of the floor along the axis of a cell;
   - fig. 3 is a cross section of the floor; and
   - fig. 4 is a section showing a variant of a cell.
 



  The floor shown consists of thick concrete slabs 1, a prefabricated mattress of mineral flanges 2 (glass wool or rock wool) applied to the slabs and a floating screed 3 made of concrete poured in situ on the mattress .



  The dimensions of a slab are typically:
 - length: 2.5 to 15 m,
 - lower width: 2.50 m,
 - thickness: 8 to 50 cm



  The thicknesses of the other layers are:
 - resilient mattress: 2 to 10 cm,
 - floating screed: 2 to 12 cm



  The total thickness of the floor is 15 to 60 cm.



  The slabs are intended to rest on supports (posts or walls) in a manner known per se.



  In accordance with the invention, the thick slab 1 comprises a sheet of tubular cells 4 threading along the length of the slab and the cross section of which constitutes approximately 20 to 60% of the total cross section of the slab 1, and passages formed by slots 5 of width 1 to 4 cm, and of 10 to 60 cm in length, spaced from 10 to 60 cm, which make the cells communicate with the face of the slab which is in contact with the fiber mat. The slots extend parallel to the length of the slab.



  The cells have any desired shape. For example, they have a cross section of circular or oval shape. Figs. 3 and 4 show for the example two forms of cells.



  The passages which relate to two neighboring rows of cells are arranged opposite or are staggered.



  As a variant, the slots are replaced by tubular passages with a diameter of 2 to 4 cm spaced from 5 to 30 cm.



  As a variant, the passages have a real diameter or equivalent of 2 to 6 cm and have a spacing of 20 cm to 1 meter.



  The structure behaves, from an acoustic point of view, like a mass-spring-mass complex which constitutes a good acoustic insulator against the transmission of airborne noise and the transmission of impact noise, with an improvement of at least 3 to 10 dB with regard to these latter noises.



  The floor of the invention may include, depending on the case, solid or simply adjoining coatings, in a manner known per se.

Claims (6)

1. Plancher en béton, constitué d'une couche en dalles (1) de béton préfabriquées comportant des alvéoles internes (4) filants selon la longueur d'une dalle; d'une couche résiliente (2) déposée sur les dalles et d'une chape flottante (3) coulée in-situ sur la couche résiliente, caractérisé en ce que les dalles sont munies de multiples passages (5) faisant communiquer les alvéoles et la couche résiliente, ces passages ayant un diamètre d'au moins 2 cm et étant espacés d'au moins 5 cm.     1. Concrete floor, consisting of a layer of precast concrete slabs (1) comprising internal cells (4) running along the length of a slab; a resilient layer (2) deposited on the slabs and a floating screed (3) cast in situ on the resilient layer, characterized in that the slabs are provided with multiple passages (5) communicating the cells and the resilient layer, these passages having a diameter of at least 2 cm and being spaced at least 5 cm. 2. Plancher selon la revendication 1, caractérisé en ce que les passages (5) de deux files voisines d'alvéoles (4) sont décalés. 2. Floor according to claim 1, characterized in that the passages (5) of two neighboring rows of cells (4) are offset. 3. Plancher selon l'une des revendications 1 et 2, caractérisé en ce que les passages (5) sont des fentes de largeur 1 à 4 cm, de longueur 10 à 60 cm, espacées de 10 à 60 cm, qui s'étendent selon la longueur de la dalle. 3. Floor according to one of claims 1 and 2, characterized in that the passages (5) are slots of width 1 to 4 cm, of length 10 to 60 cm, spaced from 10 to 60 cm, which extend depending on the length of the slab. 4. 4. Plancher selon l'une des revendications 1 et 2, caractérisé en ce que les passages (5) sont des tubes de diamètre 2 à 4 cm, espacés de 5 à 30 cm.  Floor according to either of Claims 1 and 2, characterized in that the passages (5) are tubes with a diameter of 2 to 4 cm, spaced from 5 to 30 cm. 5. Plancher selon l'une des revendications 1 et 2, caractérisé en ce que les passages (5) ont un diamètre de 2 à 6 cm et un entreaxe de 20 cm à 1 m. 5. Floor according to one of claims 1 and 2, characterized in that the passages (5) have a diameter of 2 to 6 cm and a spacing of 20 cm to 1 m. 6. Plancher selon l'une des revendications 1 à 5, caractérisé en ce que les dalles (1) ont une épaisseur de 8 à 50 cm, la couche résiliente (2) a une épaisseur de 2 à 10 cm, la chape (3) a une épaisseur de 2 à 12 cm et le plancher a une épaisseur de 15 à 60 cm. 7 Plancher selon l'une des revendications 1 à 6, caractérisé en ce que les alvéoles (4) ont une section droite qui constitue 20 à 60% de la section totale de la dalle. 8. Plancher selon l'une des revendications 1 à 7, caractérisé en ce que les alvéoles (4) sont disposés en une nappe. 9. 6. Floor according to one of claims 1 to 5, characterized in that the slabs (1) have a thickness of 8 to 50 cm, the resilient layer (2) has a thickness of 2 to 10 cm, the screed (3 ) is 2 to 12 cm thick and the floor is 15 to 60 cm thick.    7 Floor according to one of claims 1 to 6, characterized in that the cells (4) have a cross section which constitutes 20 to 60% of the total section of the slab. 8. Floor according to one of claims 1 to 7, characterized in that the cells (4) are arranged in a sheet. 9. Plancher selon l'une des revendications 1 à 8, caractérisé en ce que la couche résiliente (2) est un matelas de fibres minérales. 10. Dalle de béton préfabriquée pour un sol selon l'une des revendications 1 à 8, comportant des alvéoles internes (4) filant selon la longueur de la dalle, caractérisée en ce qu'elle comporte de multiples passages (5) entre les alvéoles et la surface de la dalle, ces passages ayant un diamètre d'au moins 2 cm et étant espacés d'au moins 5 cm.  Floor according to one of claims 1 to 8, characterized in that the resilient layer (2) is a mattress of mineral fibers. 10. precast concrete slab for a floor according to one of claims 1 to 8, comprising internal cells (4) running along the length of the slab, characterized in that it comprises multiple passages (5) between the cells and the surface of the slab, these passages having a diameter of at least 2 cm and being spaced at least 5 cm.  
CH3894A 1993-01-07 1994-01-06 concrete floor slab and for the realization of this floor. CH689674A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9300083A FR2700179B1 (en) 1993-01-07 1993-01-07 SOUND INSULATION WALL AND ITS APPLICATIONS AS A FLOOR TILE OR A WALL.

Publications (1)

Publication Number Publication Date
CH689674A5 true CH689674A5 (en) 1999-08-13

Family

ID=9442870

Family Applications (1)

Application Number Title Priority Date Filing Date
CH3894A CH689674A5 (en) 1993-01-07 1994-01-06 concrete floor slab and for the realization of this floor.

Country Status (3)

Country Link
BE (1) BE1007763A3 (en)
CH (1) CH689674A5 (en)
FR (1) FR2700179B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004767C2 (en) * 2010-05-25 2011-11-29 Het Architectenbureau FLOOR ELEMENT.

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2737523B1 (en) * 1995-07-31 1997-08-29 Mumbach Pierre CONSTRUCTIVE SYSTEM WITH MULTI-FUNCTIONAL STRUCTURE AND TELLURIC BIO AIR CONDITIONING
FR2772963B1 (en) * 1997-12-23 2001-11-16 Gilles Giora NOISE STRUCTURE WITH BODY OF ABSORBENT POROUS MATERIAL
FR2776687B1 (en) * 1998-03-27 2000-06-23 Jean Broussouloux PROCESS FOR THERMAL AND SOUND INSULATION UNDER CONCRETE SLAB, AND CONCRETE SLAB INSULATED ACCORDING TO SUCH A METHOD
CN107605084A (en) * 2017-09-17 2018-01-19 湖南诚友绿色建材科技有限公司 A kind of pre-stress concrete cored slab with ribbing
US11568848B2 (en) * 2018-04-27 2023-01-31 Toyota Motor Engineering & Manufacturing North America, Inc. Airborne acoustic absorber

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Publication number Priority date Publication date Assignee Title
US3275101A (en) * 1963-12-16 1966-09-27 James G Milne Jr Acoustic structural unit
GB1181931A (en) * 1968-02-14 1970-02-18 Nils Georg Bjorhaag A Reinforced Concrete Element for Roofs or Flooring
FR2383283A2 (en) * 1977-03-10 1978-10-06 Saret Lightweight composite floor panel - consists of section with girders of concrete, with cellular filling material and reinforcements
DE3201085A1 (en) * 1981-02-04 1982-08-26 Schmidt Reuter Ingenieurgesellschaft mbH & Co KG, 5000 Köln Hollow floor
DE3309820C2 (en) * 1983-03-18 1986-07-31 Ainedter, Dieter, Dipl.-Ing., Salzburg Ceiling slab and process for its manufacture
DE4111161A1 (en) * 1991-04-06 1992-10-08 Goesele Karl Sound insulating double-skin wall - has internal brick cavities interconnected by air ducts to internal joint gap air vol.
FI89398C (en) * 1992-02-11 1993-09-27 Kautar Oy Procedure for improving the sound insulation ability of a cavity-seen building plate and building plate combination with good sound insulation ability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004767C2 (en) * 2010-05-25 2011-11-29 Het Architectenbureau FLOOR ELEMENT.
EP2390073A1 (en) 2010-05-25 2011-11-30 HET Architectenbureau Floor element and its manufacturing method

Also Published As

Publication number Publication date
FR2700179A1 (en) 1994-07-08
BE1007763A3 (en) 1995-10-17
FR2700179B1 (en) 1995-06-09

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