WO2000056509A1 - Toile de protection destinee au coulage du beton dans un moule - Google Patents

Toile de protection destinee au coulage du beton dans un moule Download PDF

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Publication number
WO2000056509A1
WO2000056509A1 PCT/SE2000/000578 SE0000578W WO0056509A1 WO 2000056509 A1 WO2000056509 A1 WO 2000056509A1 SE 0000578 W SE0000578 W SE 0000578W WO 0056509 A1 WO0056509 A1 WO 0056509A1
Authority
WO
WIPO (PCT)
Prior art keywords
concrete
protective fabric
fabric
protective
air
Prior art date
Application number
PCT/SE2000/000578
Other languages
English (en)
Inventor
Leif ÅSMAN
Original Assignee
Kb-Produkter I Nybro Ab
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20414977&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2000056509(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kb-Produkter I Nybro Ab filed Critical Kb-Produkter I Nybro Ab
Priority to AU41586/00A priority Critical patent/AU4158600A/en
Priority to EP00921249A priority patent/EP1178880B1/fr
Priority to DE60011423T priority patent/DE60011423D1/de
Priority to DK00921249T priority patent/DK1178880T3/da
Priority to AT00921249T priority patent/ATE268677T1/de
Publication of WO2000056509A1 publication Critical patent/WO2000056509A1/fr

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Classifications

    • 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
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/44—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for treating with gases or degassing, e.g. for de-aerating
    • 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
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
    • 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

Definitions

  • the present invention relates to an air-permeable protective fabric for casting concrete in a form, the form consisting of flat form boards having a front to be directed towards the concrete and a back to be directed away from the concrete, the protective fabric being intended to be arranged between the form and the concrete to permit air from the concrete to migrate through the fabric and further along the same out in the open air.
  • the form When casting concrete in a form, the form is made up of form boards which usually have standard dimensions but which can also be sawn out to other dimensions as desired. In the joint between neighbouring form boards, studs are usually arranged to hold the form boards together by means of nail joints or the like.
  • flowing concrete can be poured into the form.
  • a great problem in such casting of concrete in a form is the air which in the form of bubbles can remain in the solidifying concrete and make it porous, frequently with bubbles in the surface. According to prior art technique, this problem is obviated by means of an air-permeable protective fabric of the type defined above, which is cut out to the desired dimensions and which in most cases is fixed to the inside of the completed form.
  • the protective fabric also protects the form from any spilled concrete which is difficult to remove from the form board but which does not adhere to the protective fabric.
  • protective fabrics often being fixed by tacks or nails or by means of a stapler to the inside of the form, several drawbacks arise. On the one hand it is difficult to stretch the fabric to a sufficient degree and, on the other hand, ugly marks are made in the concrete surface by the nail or tack by means of which the fabric was attached to the form.
  • a plurality of holes are made in the protective fabric by the tack or nail, which makes it impossible to reuse the fabric since there is a risk of concrete leaking through the damaged portions of the fabric. Concrete may also leak close to the edge of the form board, where the fabric ends.
  • the object of the present invention is to provide a protective fabric of the type mentioned by way of introduction, which is foldable round and fixable to the back of a form board and is very durable and easy to remove, clean and reuse and which always gives a very smooth and tight concrete surface.
  • said protective fabric being a hygroscopic fibre cloth, which is made of fibres of a plastic material, such as polyester or polypropylene, which by hot rolling has been given a certain, limited degree of stiffness and pits in the side facing away from the concrete, the protective fabric having a thickness which is smaller than or equal to 1.5 mm, preferably smaller than or equal to 1.2 mm, and most advantageously a thickness in the range 0.8 - 1.2 mm, thereby being sufficiently pliable and flexible to be folded round the edges of the form board and be stretched to pliably and closely abut against the front, edges and back of the form board.
  • the invention is based on the knowledge that to achieve a smooth and tight concrete surface, from which the protective fabric comes off easily, it is most important that the concrete be watered during curing since, in case of deficiency of water, the surface layer becomes porous and brittle during curing. According to the invention, this is achieved by the hygroscopic cloth material and, in particular, the pits formed in this material in the initial phase of the curing storing excess water so as then to recirculate it to the surface layer of the concrete in the final phase of the curing.
  • the surface layer of the concrete will be extremely tight and hard
  • the protective fabric comes off very easily when stripping and the protective fabric will be very easy to clean since sufficient water has been supplied to all concrete particles so as to cure in the surface layer and not penetrate into and adhere to the protective fabric.
  • the pits are truncated, the truncated top of the cone facing the concrete.
  • the advantage of this type of pits is that they are very easy to manufacture by hot rolling using a roll which has pins projecting from its circumferential surface.
  • the protective fabric according to the invention can also be reinforced, for example, by inserting reinforcing wire. This may be advantageous when large wall surfaces are to be cast or in case of high outdoor temperatures .
  • the protective fabric according to the present invention is preferably fixed to the back of the form board, i.e. the side of the form board facing away from the concrete, with the aid of suitable fixing means, such as nails or tacks.
  • Fig. 1 is a cross-section of a preferred embodiment of a protective fabric for carrying out the method according to the invention, arranged between a form board and a quantity of flowing concrete.
  • Fig. 2 illustrates on a larger scale a portion of the protective fabric shown in Fig. 1 in cross-section.
  • Fig. 1 shows a form board 1 for a form (not shown) for casting of concrete 2.
  • the form board 1 consists of a flat board of, for example, plywood or steel.
  • the form board 1 has a front 3 to be directed towards the concrete 2 and an opposite side 5, below referred to as the back, to be directed away from the concrete 2.
  • an air-permeable protective fabric 4 which is made of a hygroscopic fibre cloth of a type that will be described in more detail, is arranged to abut against the large face of the front 3 of a form board before this is built into the desired form.
  • the fabric 4 has a larger surface area than the large face of the front 3 of the form board, so that edge portions 4a of the protective fabric 4 get outside the front 3, preferably so that such edge portions 4a form along the entire circumference of the front 3.
  • the edge portions 4a are folded round the edges of the form board 1, as shown in Fig. 1, while the edge portions 4a are stretched (in a conventional manner, not shown in detail) on the back of the form board, so that the fabric 4 is made to abut in a pliable and tight manner, against the front 3, edges and back 5 of the form board 1.
  • the fabric is fixed to the back 5 of the form board 1 in a manner which is conventional per se with the aid of schematically illustrated fixing means 6, such as tacks or nails, by using a sta- pier of the like.
  • the desired form can be built by conventional joining of the form boards.
  • the protective fabric 4 has a plurality of pits 7 in the form of truncated cones.
  • the truncated top 8 of the cone is adapted to be directed towards the solidifying concrete.
  • the protective fabric 4 functions as follows. As flowing concrete 2 is poured into the form, the concrete presses the protective fabric 4 more firmly against the form board 1 while at the same time air from the concrete leaks out through the protective fabric. Thanks to the pressure of the concrete against the pro- tective fabric 4, the leaking air will be pressed further along the side of the protective fabric 4 facing away from the concrete, i.e. between the protective fabric 4 and the front 3 of the form board 1, so that the air thus migrates into the open air after having reached the end of the form.
  • the hygroscopic protective fabric and especially the pits 7 formed therein in an initial curing phase, take up excess water which then in a final curing phase is recirculated to the surface layer of the concrete, which is thus watered.
  • the protective fabric 4 is made of a hygroscopic fibre cloth, which is made of fibres of a plastic material, such as polyester or polypropylene.
  • the protective fabric 4 is sufficiently soft, pliable and flexible to be folded round the edges of the form board 1.
  • the pliability thus increases by the protective fabric 4 being very thin, having a thickness of ⁇ 1.5 mm, preferably ⁇ 1.2 mm, and most advantageously a thickness in the range 0.8 - 1.2 mm.
  • the fabric has been given a certain, limited degree of stiffness by its two sides being hot rolled in a manner known per se .
  • pits 7 are suitably embossed close to each other in the side of the protective fabric 4 which is intended to face away from the concrete 2, said pits 7 having a depth which essentially corresponds to the thickness of the fabric and contributing to the fabric, in cooperation with the posteriorly situated form board 1, being capable of temporarily storing about 1.5 1 of water per square metre.
  • the pits 7 have an essentially truncated conical shape, the trun- cated top 8 facing the concrete 2.
  • the fabric material can, according to the invention, consist of, for example, non-woven material of propylene, for example a fabric material which is sold by the company Fiberweb under the trade name I 300 NOW Spund Bond.
  • the fabric can optionally be reinforced, for example by means of inserted reinforcing wire or the like.
  • the reinforcement can be, for example, fibre glass reinforcement, thereby preventing the fabric from stretching because of heat in the warm season.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention concerne une toile de protection (4) perméable à l'air et destinée au coulage du béton dans un moule. Le moule comporte des panneaux plats (1) ayant une face frontrale (3) faisant face au béton (2) et une face postérieure (5) opposée au béton (2). Cette toile de protection est conçue pour être disposée entre le moule et le béton (2) afin de permettre à l'air contenu dans le béton (2) de traverser la toile (4) pour rejoindre l'air extérieur. La toile de protection (4) et un tissu de fibres hygroscopiques réalisé avec des fibres d'une matière plastique, telle que du polyester ou du polypropylène. Par laminage à chaud, on a conféré à ce tissu une certaine rigidité limitée et, à sa face tournée vers le béton (2), des petits trous. La toile de protection (4) a une épaisseur définie comprise, de préférence, de 0,8 à 1,2 mm, afin d'être suffisamment pliable et flexible pour être repliée sur les bords (4a) du panneau de moule (1) et pour être tendue et mise en contact avec la face frontale (3), les bords (4a) et la face postérieure (5) du panneau de moule (1).
PCT/SE2000/000578 1999-03-24 2000-03-24 Toile de protection destinee au coulage du beton dans un moule WO2000056509A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU41586/00A AU4158600A (en) 1999-03-24 2000-03-24 Protective fabric for casting concrete in a form
EP00921249A EP1178880B1 (fr) 1999-03-24 2000-03-24 Toile de protection destinee au coulage du beton dans un moule
DE60011423T DE60011423D1 (de) 1999-03-24 2000-03-24 Schutzmatte für betongiessform
DK00921249T DK1178880T3 (da) 1999-03-24 2000-03-24 Beskyttelsesklæde til stöbning af beton i en form
AT00921249T ATE268677T1 (de) 1999-03-24 2000-03-24 Schutzmatte für betongiessform

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9901065A SE9901065L (sv) 1999-03-24 1999-03-24 Förfarande vid betonggjutning i form samt skyddsduk för genomförande av förfarandet och formskiva försedd med en dylik skyddsduk
SE9901065-4 1999-03-24

Publications (1)

Publication Number Publication Date
WO2000056509A1 true WO2000056509A1 (fr) 2000-09-28

Family

ID=20414977

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/000578 WO2000056509A1 (fr) 1999-03-24 2000-03-24 Toile de protection destinee au coulage du beton dans un moule

Country Status (7)

Country Link
EP (1) EP1178880B1 (fr)
AT (1) ATE268677T1 (fr)
AU (1) AU4158600A (fr)
DE (1) DE60011423D1 (fr)
DK (1) DK1178880T3 (fr)
SE (1) SE9901065L (fr)
WO (1) WO2000056509A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009045088A1 (fr) * 2007-10-04 2009-04-09 Boon Ming Lee Garniture de coffrage à béton à perméabilité régulée
EP2593281A1 (fr) * 2009-07-14 2013-05-22 Sadler IP Pty Limited Mélange pour production de dalles
JP2017075468A (ja) * 2015-10-14 2017-04-20 株式会社高洋商会 コンクリート用透水性型枠

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE377482B (fr) * 1973-09-24 1975-07-07 Cementa Ab
US4787597A (en) * 1985-05-28 1988-11-29 Kabushiki Kaisha Kumagaigumi Cloth faced form for forming concrete
EP0366828A1 (fr) * 1987-06-12 1990-05-09 SGB public limited company Panneau de coffrage
EP0429752A1 (fr) * 1989-11-20 1991-06-05 E.I. Du Pont De Nemours And Company Moule pour béton à dessins
WO1993008350A1 (fr) * 1991-10-25 1993-04-29 E.I. Du Pont De Nemours And Company Cadre de tension pour tissus et procede d'utilisation
US5820775A (en) * 1996-06-13 1998-10-13 Hoechst Trevira Gmbh & Co. Kg Textile sheet for use as a concrete mold liner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE377482B (fr) * 1973-09-24 1975-07-07 Cementa Ab
US4787597A (en) * 1985-05-28 1988-11-29 Kabushiki Kaisha Kumagaigumi Cloth faced form for forming concrete
EP0366828A1 (fr) * 1987-06-12 1990-05-09 SGB public limited company Panneau de coffrage
EP0429752A1 (fr) * 1989-11-20 1991-06-05 E.I. Du Pont De Nemours And Company Moule pour béton à dessins
WO1993008350A1 (fr) * 1991-10-25 1993-04-29 E.I. Du Pont De Nemours And Company Cadre de tension pour tissus et procede d'utilisation
US5820775A (en) * 1996-06-13 1998-10-13 Hoechst Trevira Gmbh & Co. Kg Textile sheet for use as a concrete mold liner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009045088A1 (fr) * 2007-10-04 2009-04-09 Boon Ming Lee Garniture de coffrage à béton à perméabilité régulée
EP2593281A1 (fr) * 2009-07-14 2013-05-22 Sadler IP Pty Limited Mélange pour production de dalles
EP2593281A4 (fr) * 2009-07-14 2014-03-12 Abbey And Pride Ip Pty Ltd Mélange pour production de dalles
JP2017075468A (ja) * 2015-10-14 2017-04-20 株式会社高洋商会 コンクリート用透水性型枠

Also Published As

Publication number Publication date
DE60011423D1 (de) 2004-07-15
EP1178880A1 (fr) 2002-02-13
SE9901065L (sv) 2000-09-25
ATE268677T1 (de) 2004-06-15
AU4158600A (en) 2000-10-09
DK1178880T3 (da) 2004-10-18
SE9901065D0 (sv) 1999-03-24
EP1178880B1 (fr) 2004-06-09

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