EP0945563B1 - Coffrage pour la réalisation d'articles en béton - Google Patents

Coffrage pour la réalisation d'articles en béton Download PDF

Info

Publication number
EP0945563B1
EP0945563B1 EP99105715A EP99105715A EP0945563B1 EP 0945563 B1 EP0945563 B1 EP 0945563B1 EP 99105715 A EP99105715 A EP 99105715A EP 99105715 A EP99105715 A EP 99105715A EP 0945563 B1 EP0945563 B1 EP 0945563B1
Authority
EP
European Patent Office
Prior art keywords
concrete
adhesive
concrete formwork
formwork according
flat structure
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.)
Expired - Lifetime
Application number
EP99105715A
Other languages
German (de)
English (en)
Other versions
EP0945563A1 (fr
Inventor
Christian Hassmann
Andreas Schaab
Jörg Hausser
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.)
Johns Manville
Original Assignee
Johns Manville International Inc
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 Johns Manville International Inc filed Critical Johns Manville International Inc
Publication of EP0945563A1 publication Critical patent/EP0945563A1/fr
Application granted granted Critical
Publication of EP0945563B1 publication Critical patent/EP0945563B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a concrete formwork for the production of concrete articles, wherein on the support a so-called. Concrete form liner is applied.
  • the concrete formwork is an aid on the construction site or even at production sites where prefabricated parts are produced, which is only used for a short time. Their production usually requires a lot of effort, however.
  • the concrete formwork has a whole series of tasks. First, of course, it should form the mold in which the fresh concrete is filled and in which the concrete is solid. On the other hand, it should give the concrete article, for example a wall, a corresponding surface.
  • concrete structures whose surfaces are heavily stressed during their use, require a high surface quality.
  • examples of such structures are sewage treatment plants, hydraulic structures, such as locks or dams or tunnels and retaining walls. Concrete surfaces usually have a high surface quality when it is as smooth and dense as possible. Then pollutants or water can not penetrate into the building material and this e.g. damage by frost.
  • the fresh concrete usually contains more water than required for hydration.
  • the water rushes from the interior of the concrete molding to the outside, so that the edge zones contain more water. This water must be drained so that the quality of the surface is not affected.
  • EP-0 562 044 B1 describes a concrete mold interlayer which consists of a one-piece, porous, two-sided textile fabric, in which the first side has a pore size of 0.2 to 20 ⁇ m, and the second side has a pore size, which is larger than the pore size of the first side and is between 10 and 250 microns.
  • This concrete form liner is able to remove water and ensures a better surface finish of the concrete.
  • clamping is a labor-intensive step that, moreover, can only be carried out by highly qualified specialists.
  • EP-0 662 028 B1 describes a concrete formwork for the production of concrete articles which comprises a support means and a porous formwork insert which abuts against the support means but is not fixed thereto.
  • the insert consists of a porous fabric, which is laminated on a dewatering lattice structure material. Also in this construction, the problem of fixing the insert on the carrier device arises.
  • this concrete form liner can only be used a maximum of two times.
  • EP-A-0 812 943 describes a concrete form interlayer consisting essentially of a fleece of fibers whose titres lie between 0.7 and 3 dtex, the fleece having a maximum tensile elongation at break of at least 300 N and a surface quality corresponding to one Having pore size of 1 to 80 microns.
  • This web can also be combined with a grid provided with spacers. Again, there is the problem that these interim inserts must be carefully stretched.
  • the object of the invention is therefore to provide a concrete formwork for the production of concrete articles available, which advantageously derives the excess water during the setting of the concrete, which ensures surfaces with good regulatory surface texture, which can be easily and quickly produced, the no complicated measures Clamping the liner needed, which can be completed by less specialized forces quickly at the site and can be reused several times without much effort and material loss.
  • shuttering panels are used. These are usually factory-made, in particular rectangular panels made of solid wood, plywood or metal. Also formwork boards can serve as a carrier device.
  • the latticed sheet is attached to the support means, i. arranged not only adjacent, but so that it adheres firmly to the carrier, so it is neither displaced nor can form wrinkles.
  • the stapling technique is used, in particular, with wooden carriers; while the Auftackern can be carried out already in manufacturing halls, but it is also readily possible to do so only at the site.
  • Latticed fabrics also called lattice structure materials, are already known per se and are used e.g. in EP-0 812 943 A, in EP-0 662 028 B1 and in US Pat. No. 4,815,892, the disclosure of which is expressly incorporated herein by reference.
  • the lattice-like sheet may be in the form of a mesh fabric, a cross fabric or a sieve-shaped structure, e.g. as a foil with punched holes. It is preferably made of plastic, in particular polypropylene, polyvinyl chloride (PVC), polyethylene u.
  • the lattice-shaped sheet may also be made of steel, stainless steel or sheet metal, e.g. Wire mesh, expanded metal, perforated sheets, etc. Further, it is possible that e.g. the gap-forming layer is already part of the carrier formwork when the surface is designed to separate nonwoven from the lattice-like fabric. Very suitable is a polypropylene spacer fabric from Tenax Kunststoffe in Lindau, which has a mesh size of about 3 mm ⁇ 3 mm and a web width of about 1 mm and a total thickness of about 2 mm.
  • the lattice-shaped sheet is stable, so that it can absorb the resulting concreting pressures substantially free of deformation.
  • the geometric relationship of hole size to land surface must be designed so that on the one hand, a sufficiently large adhesive surface for the applied web is available, on the other hand but enough hole area is available to drain the water unhindered.
  • the latticed sheet is preferably applied flush to the support means; but it is also possible to apply a larger area, so that the protruding edge surfaces must be pulled over the edges of the carrier.
  • the nonwoven is attached to the latticed sheet by means of a suitable adhesive.
  • the mesh fabric is first provided with an adhesive, in particular with a spray adhesive.
  • the amount of adhesive applied must be so great that on the one hand the spacers of the grid are provided on the fleece side facing sufficient adhesive so that the fleece can adhere sufficiently, on the other hand, the amount must not be so large that the interstices of the grid completely filled with the glue.
  • the amount is such that at least 50% of the grid hole area is free of adhesive. It is also possible to use so-called pressure-sensitive adhesives which, after use, make it possible to remove or remove the fleece. Furthermore, spread adhesives and roll-on adhesives are suitable.
  • the fleece can be applied directly to the adhesive provided lattice-shaped fabric and fixed by simply pressing.
  • Particularly suitable as nonwovens are those which are composed of fibers whose titres are between 0.7 to 4 dtex, preferably 1 to 3 dtex, particularly preferably 1.5 to 2.6 dtex.
  • Nonwovens of this type are described in EP-A-0 812 943. The disclosure of this European patent application is particularly related.
  • adhesives that can be sprayed on.
  • the adhesive can be applied by rolling or brushing.
  • the suitable adhesive is optimized so that the nonwoven can be solved by the lattice-shaped fabric after demoulding without significant effort. This is possible, for example, when the adhesive effect is weakened by the high alkalinity of the concrete.
  • the adhesive effect of the adhesive may also be adjusted so that only a small force is necessary during demoulding
  • the adhesives used are so-called alkali-soluble adhesives which are dissolved or largely dissolved by the alkaline water which escapes during solidification and hardening of the concrete.
  • the glue loses its adhesive effect.
  • spray adhesives e.g. the spray adhesive 75 or also, an aerosol adhesive from 3M Germany GmbH in Neuss.
  • the fleece may be smooth on the side which comes in contact with the concrete, but it may also be structured.
  • the invention provides a concrete formwork with which to produce concrete articles in a very economical and simple way.
  • the concrete formwork ensures a very good drainage of the concrete.
  • the nonwoven fabric can be easily peeled off the lattice sheet, since the adhesive is easily peeled off the grid and it has remained virtually intact, the support means with the latticed sheet can be used several times, i. it can be applied again a new fleece. In general, a removal of the grid-shaped support is necessary only after 20 to 30 times using.
  • the finished concrete formwork can also be stored on the site without the fleece from the grid-shaped pad dissolves, since the adhesive is weakened by rainwater.
  • the concrete formworks are suitable for all common formwork types, such as system-less formwork and system formwork. They are particularly advantageous in the construction of sewage treatment plants, Water tanks, rainwater retention basins, locks, dykes, dams, bridge piers, tunnels, Erdbefest Trentsmauern, etc., use.
  • the formwork according to the invention retains cement and aggregates in an excellent manner and allows air and water to escape very well.
  • the hardened concrete surface is dense and firm and substantially free of pores and voids. After sufficient hardening of the concrete, the formwork is removed. The fleece can be easily removed from the grid support. The carrier with the lattice-shaped fabric can be reused again soon for the application of a new fleece and for use in concreting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Laminated Bodies (AREA)

Claims (16)

  1. Coffrage pour béton pour la réalisation d'articles de béton, comprenant un dispositif portant et une couche intermédiaire pour des formes de béton aussi bien qu'une structure de surface réticulaire disposée sur le dispositif portant, caractérisé en ce que, la structure de surface réticulaire est fixée de manière stable par capsage sur le dispositif portant, et sur cette structure de surface réticulaire est fixé un voile par l'intermédiaire d'un adhésif soluble en milieu alcalin.
  2. Coffrage pour béton selon la revendication 1, caractérisé en ce que, le voile est fixé par l'intermédiaire d'un liant adhérent.
  3. Coffrage pour béton selon la revendication 2, caractérisé en ce que, les capsages s'appliquent aux intervalles de 1 à 10 cm.
  4. Coffrage pour béton selon au moins l'une des revendications 1 à 3, caractérisé en ce que, la structure de surface réticulaire est collée, vissée ou soudée sur le dispositif portant.
  5. Coffrage pour béton selon au moins l'une des revendications 1 à 2, caractérisé en ce que, la structure de surface réticulaire est déjà partie composante du dispositif portant.
  6. Coffrage pour béton selon au moins l'une des revendications 1 ou 3 à 5, caractérisé en ce que, le voile est fixé par l'intermédiaire d'un adhésif pulvérisant.
  7. Coffrage pour béton selon au moins l'une des revendications 1 à 5, caractérisé en ce que, le voile est fixé par l'intermédiaire d'un adhésif de graissage ou d'un adhésif étendu avec le rouleau.
  8. Coffrage pour béton selon au moins l'une des revendications 1 à 7, caractérisé en ce que, la quantité d'adhésif est ainsi dosée que les éléments de distance du réseau sont pourvus en essence avec de l'adhésif sur le côté voisiné avec le voile, et l'adhésif remplit seulement une portion des trous du réseau.
  9. Coffrage pour béton selon la revendication 8, caractérisé en ce que, les trous d'entre les éléments de distance sont remplis avec de l'adhésif tout au plus jusqu'à 50% de leur volume.
  10. Coffrage pour béton selon l'une des revendications 1 à 9, caractérisé en ce que, le voile est constitué de fibres dont le titre se trouve entre 0,7 et 4 dtex, de préférence entre 1 et 3 dtex, spécialement de préférence entre 1,5 et 2,6 dtex, le voile a une force de traction maxime d'au moins 300 N, de préférence d'au moins 400 N, spécialement d'au moins 500 N, en direction longitudinale, et d'au moins 250 N, de préférence d'au moins 300 N, spécialement d'au moins 350 N, en direction transversale, mesurée à une bande large de 5 cm, et présente une qualité de la surface correspondant à une dimension des pores de 1 à 80 µm, de préférence de 5 à 60 µm, spécialement de 10 à 30 µm.
  11. Coffrage pour béton selon la revendication 12, caractérisé en ce que, le voile est construit de fibres de polyester, qui consistent en au moins 95% de téréphtalate de polyéthylène, spécialement de téréphtalate de polyéthylène non modifié, avec une viscosité intrinsèque de 0,5 à 1,4 dl/g, mesurée aux solutions avec de l'acide dichlore-acétique à 25°C.
  12. Coffrage pour béton selon au moins l'une des revendications 1 à 4 ou 7 à 11, caractérisé en ce que, la structure de surface réticulaire est un tissu sous forme de filet.
  13. Coffrage pour béton selon la revendication 1, caractérisé en ce que, la structure de surface réticulaire est une tôle perforée ou une plaque perforée en matière plastique.
  14. Coffrage pour béton selon l'une des revendications 1 à 13, caractérisé en ce que, la structure de surface réticulaire présente une largeur de l'oeil de 2 à 15 mm.
  15. Procédé pour la réalisation d'un coffrage pour béton pour la réalisation d'articles de béton, caractérisé en ce qu', une structure de surface réticulaire est fixée de manière stable, complètement plane, par capsage sur un dispositif portant, la structure de surface réticulaire est pourvue avec un adhésif soluble en milieu alcalin, dans une telle quantité que les éléments de distance du filet soient pourvus en essence avec de l'adhésif sur le côté voisiné avec le voile, et l'adhésif remplisse seulement une portion des trous du réseau, puis un voile est appliqué complètement plan, et le cas échéant nivelé, et fixé par pression sur la structure de surface réticulaire.
  16. Utilisation coffrage pour béton selon l'une des revendications 1 à 14 ou réalisé selon un procédé selon la revendication 15, pour la réalisation d'articles de béton.
EP99105715A 1998-03-21 1999-03-20 Coffrage pour la réalisation d'articles en béton Expired - Lifetime EP0945563B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19812517 1998-03-21
DE19812517A DE19812517C2 (de) 1998-03-21 1998-03-21 Betonschalung zur Herstellung von Betonartikeln

Publications (2)

Publication Number Publication Date
EP0945563A1 EP0945563A1 (fr) 1999-09-29
EP0945563B1 true EP0945563B1 (fr) 2007-02-14

Family

ID=7861851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105715A Expired - Lifetime EP0945563B1 (fr) 1998-03-21 1999-03-20 Coffrage pour la réalisation d'articles en béton

Country Status (6)

Country Link
US (1) US6450476B1 (fr)
EP (1) EP0945563B1 (fr)
AT (1) ATE354006T1 (fr)
DE (2) DE19812517C2 (fr)
DK (1) DK0945563T3 (fr)
NO (1) NO316850B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19834983C1 (de) * 1998-08-03 1999-09-16 Fibertex As Betonschaltung und Verfahren zur Herstellung einer Betonschalung
ATA43799A (de) * 1999-03-12 2002-08-15 Polyfelt Gmbh Betonschalung
DE202008008663U1 (de) * 2008-06-27 2008-10-30 Derin-Holzapfel & Co. Grundbesitz Und Beteiligungs Kg Betonschalungsplatten-Trennsystem

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR787657A (fr) * 1934-06-23 1935-09-26 Perfectionnement aux coffrages pour béton
US3780975A (en) * 1971-11-23 1973-12-25 L Turzillo Means for producing cast-in-place structures in situ
US4055322A (en) * 1975-11-13 1977-10-25 Cassidy Hugh I Permeable liner having concrete setting retardant
AT393862B (de) * 1984-03-22 1991-12-27 Rund Stahl Bau Gmbh & Co Schalplatte
US4787597A (en) * 1985-05-28 1988-11-29 Kabushiki Kaisha Kumagaigumi Cloth faced form for forming concrete
GB2175635B (en) * 1985-05-28 1988-06-08 Kumagai Gumi Co Ltd Formwork
IN167457B (fr) * 1985-07-31 1990-10-27 Shimizu Construction Co Ltd
JPS6290470A (ja) * 1985-10-17 1987-04-24 株式会社熊谷組 コンクリ−ト型枠装置
GB2201632B (en) * 1987-01-21 1990-08-22 Netlon Ltd Drainage material and drainage core for a drainage system
US4856754A (en) * 1987-11-06 1989-08-15 Kabushiki Kaisha Kumagaigumi Concrete form shuttering having double woven fabric covering
US5124102A (en) * 1990-12-11 1992-06-23 E. I. Du Pont De Nemours And Company Fabric useful as a concrete form liner
US5302099A (en) * 1992-09-28 1994-04-12 E. I. Du Pont De Nemours And Company Laminated fabric useful as a concrete form liner
JPH06254825A (ja) * 1993-03-03 1994-09-13 Sumitomo Chem Co Ltd 透水性コンクリート型枠
DE19623584B4 (de) * 1996-06-13 2004-10-14 Johns Manville International, Inc., Denver Textiles Flächengebilde zur Verwendung als Betonformzwischenlage
US5824347A (en) * 1996-09-27 1998-10-20 E. I. Du Pont De Nemours And Company Concrete form liner

Also Published As

Publication number Publication date
NO991262L (no) 1999-09-22
NO991262D0 (no) 1999-03-15
EP0945563A1 (fr) 1999-09-29
NO316850B1 (no) 1999-09-22
DE19812517A1 (de) 1999-09-30
DE19812517C2 (de) 2000-06-21
US6450476B1 (en) 2002-09-17
DK0945563T3 (da) 2007-04-10
ATE354006T1 (de) 2007-03-15
DE59914185D1 (de) 2007-03-29

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