EP2063048A1 - Verlorene Deckenschalung mit Abdichtung, die eine Öffnung in dieser verlorenen Deckenschale begrenzt - Google Patents

Verlorene Deckenschalung mit Abdichtung, die eine Öffnung in dieser verlorenen Deckenschale begrenzt Download PDF

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Publication number
EP2063048A1
EP2063048A1 EP08291083A EP08291083A EP2063048A1 EP 2063048 A1 EP2063048 A1 EP 2063048A1 EP 08291083 A EP08291083 A EP 08291083A EP 08291083 A EP08291083 A EP 08291083A EP 2063048 A1 EP2063048 A1 EP 2063048A1
Authority
EP
European Patent Office
Prior art keywords
shutter
slab
predalle
additional layer
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08291083A
Other languages
English (en)
French (fr)
Inventor
Richard Garcia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KP1 SAS
Original Assignee
KP1 SAS
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 KP1 SAS filed Critical KP1 SAS
Publication of EP2063048A1 publication Critical patent/EP2063048A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
    • B28B7/186—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article for plates, panels or similar sheet- or disc-shaped objects, also flat oblong moulded articles with lateral openings, e.g. panels with openings for doors or windows, grated girders
    • 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
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00—Pavings made of prefabricated single units
    • E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders

Definitions

  • the invention relates to the manufacture of concrete slabs such as prefabricated slabs, which are generally cast on a production site, then transported and / or stored before being installed.
  • the compression slab is poured, pouring concrete on the pre-slab carrying a suitable reinforcement to form a floor.
  • the slabs are generally made of prestressed concrete, so as to have sufficient rigidity while being light enough to allow their transport and handling.
  • Such pre-stressed concrete slab of the state of the art is prefabricated by positioning and tensioning a set of cables 2 horizontally and parallel to each other, in a mold-type enclosure.
  • This enclosure is delimited by a lower face above which the cables 2 extend, and by a set of partitions forming a periphery crossed on two opposite blanks by the cables.
  • the cables are stretched before pouring concrete, which then covers them, these cables being located in the lower part of the thickness of the predalle 1, as shown schematically in the figure 1 .
  • Such a reserve with a rectangular contour, is represented at figure 1 identified by 3.
  • the formation of this reserve is ensured by a shutter or buffer, which is positioned at the location of the opening before casting of the predalle.
  • Such a shutter is represented in figure 1 being spotted by 4.
  • the shutter is an element made of cellular cardboard.
  • the shutter before installation of the shutter, it can be resized by an operator to form grooves in the underside of the shutter so that once in place, it overlaps the cables while being supported on the bottom of of the mold.
  • the removal of the shutter is performed on site after installation of the predalle, after pouring of the compression slab covering the pre-slab, which allows operators to walk on the entire slab, including the shutter.
  • the object of the invention is to propose a solution to overcome the above disadvantages.
  • the subject of the invention is a concrete slab, comprising a shutter with a cellular cardboard structure to form an opening or a reserve in this predalle, this shutter having been installed at the location of the reserve before casting of the predalle, this shutter having a so-called upper face and a so-called lower face parallel to each other, characterized in that said shutter comprises an additional layer of rain-resistant material extending parallel to its upper and lower faces and having an area greater than or equal to that of the upper face and / or the lower face, and wherein said additional layer is located in the thickness of the cellular cardboard structure being spaced from the lower face a distance less than the thickness of the concrete forming the predalle.
  • This additional layer increases the resistance to the shutter depression, which prevents its complete destruction when exposed to bad weather. Due to the location of this layer in the thickness of the cellular cardboard structure, this layer is not likely to be degraded when the shutter is manipulated.
  • the invention also relates to a slab as defined above, comprising a shutter having an additional layer formed by a mesh having a surface area greater than that of the upper face and / or the lower face in order to protrude laterally from the alveolar cardboard to be taken in the concrete of the predalle, this additional layer being spaced from the lower face a distance less than the thickness of the concrete forming the predalle.
  • This mesh layer is a gate closing the opening, remaining present even if the cellular cardboard structure is completely degraded by rain. There is no risk of passing through the opening.
  • the invention also relates to a pre-slab as defined above, in which the additional layer is made of cardboard reinforced to withstand water.
  • the additional layer resistant to water, located in the thickness of the cardboard structure, is a seal closing the opening of the slab sealingly. Rainwater can not penetrate into the cellular cardboard structure, which is sufficient to prevent its degradation.
  • the invention also relates to a pre-slab as defined above, comprising a shutter, having an additional layer located on the upper face of its cardboard structure.
  • the invention also relates to a predalle as defined above, wherein the additional layer on the upper face is formed by a bright plastic film to visually indicate the presence of a shutter in the predalle.
  • the invention also relates to a pre-slab as defined above, comprising a shutter having a thickness greater than the concrete thickness forming the pre-slab.
  • the invention also relates to a shutter as defined above, considered alone.
  • the slab according to the invention comprises a shutter with a general structure of cellular cardboard, incorporating an additional layer, formed in a water-resistant material, to reduce the risk of deterioration of this shutter when exposed to rain.
  • the shutter 6 has a general cellular cardboard structure, of parallelepipedal shape, so as to achieve a rectangular contour reservation in a predalle. It has an upper face and two contiguous lateral faces marked respectively by 7, 8 and 9, as well as a lower face and two other lateral faces not visible in the figure.
  • the upper and lower faces are solid cardboard, and they enclose a honeycomb honeycomb structure extending in a direction normal to the faces.
  • the shutter is thus cut from raw cellular cardboard, to the desired dimensions, that is to say to the dimensions defined by the opening to be made.
  • the shutter thus obtained has smooth upper and lower faces, and side faces in the form of honeycomb blanks constituting surfaces. irregular with good adhesion properties to concrete poured around the shutter.
  • this mesh sheet 11 has a rectangular contour, but this contour has larger dimensions than this upper face 7.
  • This toasting sheet 11 is located at an intermediate height between the upper face 7 and the lower face, extending parallel to these faces, and through the whole of the honeycomb cardboard structure, which thus comprises, seen from the outside, an upper portion 12 and a lower portion 13 located on either side of this toasting sheet.
  • the shutter can thus be manufactured from two parallelepiped blocks of cellular cardboard, respectively corresponding to the upper part 12 and the lower part 13, by bonding these two parts to one another, having previously interposed the toasting layer between them.
  • the toasting layer protrudes from the side faces of the shutter, so that it can be taken to the concrete of the predalle, when it is poured.
  • the toasting layer 11 is rigidly secured by its periphery to the concrete forming the predalle.
  • This layer of mesh thus constitutes a grid rigidly secured to the opening in which it is located.
  • the mesh layer It remains present to constitute in the opening a barrier preventing a site operator from passing through this opening.
  • the shutter which is marked by 14 also comprises a general cellular cardboard structure 15 parallelepiped shaped having an upper face 16 and two side faces 17 and 18 visible in the figure, and three non-visible faces.
  • the additional layer which is marked by 19 simply covers the upper face 16 instead of being located between the upper and lower faces.
  • This additional layer 19 is here a protective layer through which the rainwater can not penetrate the honeycomb cardboard structure of the shutter to imbibe and degrade.
  • This layer 19 then has the same shape and the same dimensions as the upper layer 16 that it protects.
  • the shutter has a height or thickness that corresponds to the thickness of the predalle to be cast.
  • the additional layer 19 can be made of plastic or reinforced cardboard to have a satisfactory resistance to water.
  • the basis weight of such a carton is between 610 and 5000 g / m2, and is advantageously 610 g / m2, the density is between 0.9 and 1.2, the burst index is between 2 and 4 kPa.m2 / g.
  • the materials used to make this cardboard are cellulosic fibers recovered, treated in the mass by adding glues, resins, starches, and / or dyes.
  • the retained thickness is advantageously 1 to 2 mm, and the outer faces advantageously have a glossy appearance to further increase the water resistance.
  • the layer 19 is flush with the surface of the latter, so as to make the opening or reservation thus made waterproof.
  • the layer 19 is of a bright color, that is to say having a strong contrast with respect to the color of the concrete, so as to make the presence of a shutter in the predalle visible to the naked eye, for an operator evolving on the surface of the latter.
  • the shutter which is marked by 21 comprises a general structure of parallelepipedal cellular cardboard, comprising an upper face 22 and two side faces 23 and 24 and three other faces not visible in the figure.
  • This structure is formed of an upper portion 26 and a lower portion 27 themselves parallelepipedic.
  • This shutter comprises an additional layer 28 which, as in the example of FIG. figure 2 is interposed between the upper portion 26 and the lower portion 27.
  • This intermediate layer 28 is a protective layer of rain, through which the rain can not penetrate the entire thickness of the shutter, so that it can not completely damage it.
  • the height at which the additional layer 28 is positioned is less than the thickness of the concrete slab to be cast, as shown schematically on the figure 5 .
  • the layer 28 can close the entire opening having its edges which run along the inner edges of this opening, which further increases the sealing imparted by this layer.
  • This layer 28 may still have an area greater than that of the upper and lower faces of the shutter so as to be taken in the concrete constituting the predalle. In this case, the seal it provides vis-à-vis the rainwater is further increased.
  • This layer 28 may advantageously be part of an upper face of a cellular cardboard rigidifying plate interposed between the upper part 26 and the lower part 27.
  • This plate then comprises a cardboard upper face covered by the waterproofing layer 28, a lower face of cardboard, and a cellular honeycomb-type structure sandwiched between these two faces.
  • This stiffening plate then improves the mechanical strength of the shutter assembly while being protected from moisture by the waterproofing layer 28.
  • the additional layer 28 may be made of plastic or reinforced cardboard to have a satisfactory resistance to water.
  • the carton used then advantageously meets the same specifications as that used in the example of the figure 3 , so as to have the required water resistance.
  • a shutter having a layer of mesh lying in its thickness, and a bright-colored plastic film located at its upper face.
  • a shutter having a layer of plastic or cardboard reinforced in its thickness to prevent rainwater from penetrating the entire structure of cardboard, and a plastic film bright color on its upper face to signal its presence.
  • These shutters can obviously have a thickness equal to or greater than that of the predalle in which they are implanted.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Building Environments (AREA)
EP08291083A 2007-11-20 2008-11-18 Verlorene Deckenschalung mit Abdichtung, die eine Öffnung in dieser verlorenen Deckenschale begrenzt Withdrawn EP2063048A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708125A FR2923850A1 (fr) 2007-11-20 2007-11-20 Predalle pourvue d'un obturateur delimitant une ouverture de cette predalle.

Publications (1)

Publication Number Publication Date
EP2063048A1 true EP2063048A1 (de) 2009-05-27

Family

ID=39618817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08291083A Withdrawn EP2063048A1 (de) 2007-11-20 2008-11-18 Verlorene Deckenschalung mit Abdichtung, die eine Öffnung in dieser verlorenen Deckenschale begrenzt

Country Status (2)

Country Link
EP (1) EP2063048A1 (de)
FR (2) FR2923850A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2994994A1 (fr) * 2012-09-04 2014-03-07 Mabamure Boite de reservation pourvue d'un fond adapte pour supporter des charges statiques ou dynamiques
EP3438366A1 (de) * 2017-08-03 2019-02-06 GOLDBECK GmbH Betonfertigdeckenteil für ein parkhaus und verfahren zur herstellung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2198042A1 (de) * 1972-08-18 1974-03-29 Rochette Cenpa
FR2668193A1 (fr) * 1990-10-22 1992-04-24 Boga Ingenierie Element de reservation pour coulee de beton, et organe le comportant.
DE19537496A1 (de) * 1995-09-27 1997-04-03 Slaweyko Prof Dr Marinow Formgebungskörper für Bauzwecke
US5855808A (en) * 1994-06-08 1999-01-05 Damage Prevention Products Corp. Concrete forming member
FR2804148A1 (fr) * 2000-01-24 2001-07-27 Laurent Decaix Collecteur de reservation visitable
US20050011152A1 (en) * 2003-07-16 2005-01-20 O'grady James Francis Cavity former

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2198042A1 (de) * 1972-08-18 1974-03-29 Rochette Cenpa
FR2668193A1 (fr) * 1990-10-22 1992-04-24 Boga Ingenierie Element de reservation pour coulee de beton, et organe le comportant.
US5855808A (en) * 1994-06-08 1999-01-05 Damage Prevention Products Corp. Concrete forming member
DE19537496A1 (de) * 1995-09-27 1997-04-03 Slaweyko Prof Dr Marinow Formgebungskörper für Bauzwecke
FR2804148A1 (fr) * 2000-01-24 2001-07-27 Laurent Decaix Collecteur de reservation visitable
US20050011152A1 (en) * 2003-07-16 2005-01-20 O'grady James Francis Cavity former

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2994994A1 (fr) * 2012-09-04 2014-03-07 Mabamure Boite de reservation pourvue d'un fond adapte pour supporter des charges statiques ou dynamiques
EP3438366A1 (de) * 2017-08-03 2019-02-06 GOLDBECK GmbH Betonfertigdeckenteil für ein parkhaus und verfahren zur herstellung

Also Published As

Publication number Publication date
FR2924457A1 (fr) 2009-06-05
FR2924457B1 (fr) 2017-07-28
FR2923850A1 (fr) 2009-05-22

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