EP1424458A1 - Shuttering element and its method of production - Google Patents

Shuttering element and its method of production Download PDF

Info

Publication number
EP1424458A1
EP1424458A1 EP02447232A EP02447232A EP1424458A1 EP 1424458 A1 EP1424458 A1 EP 1424458A1 EP 02447232 A EP02447232 A EP 02447232A EP 02447232 A EP02447232 A EP 02447232A EP 1424458 A1 EP1424458 A1 EP 1424458A1
Authority
EP
European Patent Office
Prior art keywords
resin
block
formwork element
helical
foam
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Withdrawn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
EP02447232A
Other languages
German (de)
French (fr)
Inventor
Léon-Edouard Desmarets
Edouard-Léon Desmarets
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP02447232A priority Critical patent/EP1424458A1/en
Publication of EP1424458A1 publication Critical patent/EP1424458A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/04—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for structures of spherical, spheroid or similar shape, or for cupola structures of circular or polygonal horizontal or vertical section; Inflatable 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
    • B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
    • B28B7/225—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units for making stairs or stair units comprising more than one step
    • 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
    • B28B7/346—Manufacture of moulds
    • 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
    • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber
    • 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
    • B28B7/364—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article of plastic material or rubber
    • 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/062—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for stairs or steps

Definitions

  • the invention relates to a formwork element and its manufacturing process, in particular an element of formwork for the underside of a spiral staircase, to pour in concrete.
  • the underside of a spiral staircase constitutes a helicoid.
  • its generator is a straight line
  • the helicoid constitutes a curved surface, possible by means of a flat surface only pleating, deforming or tearing it.
  • DE-A1-44 20 849 further discloses a method of construction consisting in placing between the walls verticals delimiting the staircase, spacers taking support on supports, and defining the shape of the surface to be poured. These spacers then serve as support for continuous elements, concrete molding.
  • the process of the invention essentially consists in make the formwork element from an element rigid, self-supporting, serving both as a formwork and support element, both for the reinforcement only for pouring concrete.
  • the method consists in cut a block, generally parallelepiped, of synthetic foam, to give one of its faces (the upper side in use position) the shape of a portion, usually a quarter, of the surface lower, helical, of the staircase to be made.
  • a rigid skin is then poured in synthetic resin, which will serve as a support surface for reinforcement, and molding and support for the fresh concrete.
  • the rigid panel will be glued to the base surface, so as to provide a block a part, the two opposite faces of which are protected, one by the panel and the other by the resin skin.
  • the volume of synthetic foam essentially serves as a retractor, between the upper skin molding, synthetic resin, and panel lower support.
  • This foam element presents as advantage of being easily cut to the desired shape using a wire, abrasive or heating, in known manner in the technique, to be light, and to present a good compressive strength, allowing maintain the molding skin in a predefined position relative to the underside.
  • Figure 1 shows a formwork element according the invention
  • Figure 2 is a block diagram of the cutting of a formwork element according to the invention.
  • an element formwork 1 consisting of a block 2 of synthetic foam - usually polystyrene or analogous - whose upper face 3 is cut to the shaped like a helicoid, and is covered with a skin 4.
  • the skin 4 is intended to serve as a waterproof surface, concrete molding. Before pouring concrete, it will also serve as a work surface for workers, for example scrap metal workers, and support workers for the reinforcement carried out. To this extent, it must therefore be essentially rigid and undeformable, for distribute substantially over the entire surface of the synthetic foam localized loads, for example the workers' weights, and resist punching, to prevent it from being punctured by falling tools, and analogues, or by the reinforcement.
  • the skin 4 is made of resin reinforced synthetic, which ensures the qualities tightness, rigidity and resistance to punching.
  • such a formwork element is performed as follows.
  • Parameters of the helical surface to be molded are imposed by the characteristics of the staircase to achieve.
  • the generator of the helical surface being a line, these parameters are used to control a wire cutting machine (heating wire or abrasive wire) which cut a block of polystyrene to give one of the its faces the desired shape of a section of the helicoid.
  • FIG. 2 The schematic diagram of such a division is illustrated in Figure 2, in which we see a block raw 2 to be cut, resting on a movable plate 5 in translation along arrow H, and in rotation according to arrow R.
  • a cutting wire 6 is also mounted movable in the vertical direction on supports 7, 7 ', the speeds of displacement V, V 'of the two ends of the wire are independently controlled, as well as the speed of rotation R and the speed of translation H of the plate.
  • the combined movements of translation and rotation of the plate 5 bring the wire 6 to penetrate the block, and cut it along a surface whose parameters are provided by the velocities V, V ', R and H.
  • this coating can for example be a paint to polyurethane.
  • a skin is formed rigid, made of synthetic resin, preferably reinforced with a fiber mat. So conventional, the resin is applied in the fluid state, after adding a hardener. According to a mode of preferred embodiment, a first coating of resin, on which the mat is deposited, on which we superimpose then a second layer of resin, so as to drown the mat in the resin.
  • a roller spike
  • the resin will for example be a polyester resin.
  • the mat is a mat of fibers inert under the conditions of use, for example glass fibers.
  • a formwork element 1 comprising a tight and rigid molding skin 4, of the desired shape, supported by a support element 2 in a position such that when the support element 2 is laid flat on a horizontal support, the skin 2 is found in the desired orientation for molding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

The shuttering element for a cast concrete spiral staircase consists of a rigid block of a synthetic foam with a flat lower thrust surface and a helicoid upper surface coated with an impermeable and non-deformable moulding skin of a hardened and fibre-reinforced synthetic resin. The block is made using a wire cutter following a helicoid surface with its axis perpendicular to the base of the block. The shuttering element (1) for a cast concrete spiral staircase consists of a rigid block (2) of a synthetic foam with a flat lower thrust surface and a helicoid upper surface (4) coated with an impermeable and non-deformable moulding skin (3) of a hardened and fibre- reinforced synthetic resin. The block is made from a basically parallelpiped block of synthetic foam, using a wire cutter following a helicoid surface with its axis perpendicular to the base of the block, and is given a coating of a sealing material before applying the impermeable resin. A panel of a rigid material is stuck to the base of the block.

Description

L'invention concerne un élément de coffrage et son procédé de fabrication, en particulier un élément de coffrage pour la face inférieure d'un escalier tournant, à couler en béton.The invention relates to a formwork element and its manufacturing process, in particular an element of formwork for the underside of a spiral staircase, to pour in concrete.

La face inférieure d'un escalier tournant constitue un hélicoïde. Bien que sa génératrice soit une droite, l'hélicoïde constitue une surface courbe, qu'il n'est possible de réaliser au moyen d'une surface plane qu'en la plissant, en la déformant ou en la déchirant.The underside of a spiral staircase constitutes a helicoid. Although its generator is a straight line, the helicoid constitutes a curved surface, possible by means of a flat surface only pleating, deforming or tearing it.

Les matériaux classiques de coffrage employés dans la construction de bâtiments sont des planches et panneaux agglomérés en bois. Si ces matériaux offrent l'avantage d'être facilement travaillés, on ne peut facilement transformer leur surface plane en surface courbe avec les outils dont dispose l'ouvrier coffreur sur le chantier. Il peut y arriver en décomposant la surface courbe en un grand nombre de facettes. Cette méthode est fastidieuse, et demande un savoir-faire certain, surtout si l'on veut lisser le crénelage des facettes. Elle ne peut être rentable que pour un grand nombre de réutilisations.The classic formwork materials used in building construction are planks and wooden chipboard. If these materials offer the advantage of being easily worked, you cannot easily transform their flat surface into a surface curve with the tools available to the formwork worker on site. It can do this by breaking down the curved surface in a large number of facets. This method is tedious, and requires expertise certain, especially if we want to smooth the aliasing of facets. It can only be profitable for a large number of re-uses.

Pour le coffrage d'escalier tournant, on connaít par la demande de brevet WO 01/18326 une peau coffrante réglable.For the staircase formwork, we know by patent application WO 01/18326 a formwork skin adjustable.

DE-A1-44 20 849 divulgue d'autre part un procédé de construction consistant à disposer entre les parois verticales délimitant l'escalier, des entretoises prenant appui sur des supports, et définissant la forme de la surface à couler. Ces entretoises servent ensuite de support pour des éléments continus, de moulage du béton. DE-A1-44 20 849 further discloses a method of construction consisting in placing between the walls verticals delimiting the staircase, spacers taking support on supports, and defining the shape of the surface to be poured. These spacers then serve as support for continuous elements, concrete molding.

On connaít encore des éléments de moulage en polystyrène, pour la coulée de béton de forme particulière.We still know molding elements in polystyrene, for pouring shaped concrete special.

Selon l'invention, on se propose de fournir un élément de coffrage simple à mettre en oeuvre, pour escalier en spirale, ne demandant que peu de main-d'oeuvre non qualifiée, ainsi qu'un procédé de fabrication d'un tel élément de coffrage.According to the invention, it is proposed to provide a simple formwork element to implement, for spiral staircase, requiring little labor unqualified, as well as a process for manufacturing a such formwork element.

Le procédé de l'invention consiste essentiellement à réaliser l'élément de coffrage à partir d'un élément rigide, autoportant, servant à la fois d'élément de coffrage et d'élément de support, aussi bien pour le ferraillage que pour la coulée du béton.The process of the invention essentially consists in make the formwork element from an element rigid, self-supporting, serving both as a formwork and support element, both for the reinforcement only for pouring concrete.

Plus particulièrement, le procédé consiste à découper un bloc, généralement parallélépipédique, de mousse synthétique, pour donner à l'une de ses faces (la face supérieure en position d'utilisation) la forme d'une portion, généralement un quartier, de la surface inférieure, hélicoïdale, de l'escalier à réaliser. Sur la face ainsi formée, on coule ensuite une peau rigide en résine synthétique, qui servira de surface de support pour le ferraillage, et de moulage et dé support pour le béton frais.More particularly, the method consists in cut a block, generally parallelepiped, of synthetic foam, to give one of its faces (the upper side in use position) the shape of a portion, usually a quarter, of the surface lower, helical, of the staircase to be made. On the face thus formed, a rigid skin is then poured in synthetic resin, which will serve as a support surface for reinforcement, and molding and support for the fresh concrete.

Lors de la mise en place de l'élément de coffrage, sa face inférieure, opposée à la face façonnée, est posée sur un panneau rigide, d'aggloméré ou analogue, lui-même supporté par des étais de mise à la hauteur voulue. Ceci, dans le but de répartir la charge sur l'ensemble de la surface de base de l'élément de coffrage.When installing the formwork element, its lower face, opposite the shaped face, is placed on a rigid panel, of chipboard or the like, itself supported by props at the desired height. This, in order to distribute the load over the entire base surface of the formwork element.

Dans un mode de réalisation, le panneau rigide sera collé à la surface de base, de manière à fournir un bloc d'une pièce, dont les deux faces opposées sont protégées, l'une par le panneau et l'autre par la peau de résine. In one embodiment, the rigid panel will be glued to the base surface, so as to provide a block a part, the two opposite faces of which are protected, one by the panel and the other by the resin skin.

Selon l'invention, le volume de mousse synthétique sert essentiellement d'écarteur, entre la peau supérieure de moulage, en résine synthétique, et le panneau inférieur d'appui. Cet élément en mousse présente comme avantage d'être facilement découpé à la forme voulue à l'aide d'un fil, abrasif ou chauffant, de manière connue dans la technique, d'être léger, et de présenter une bonne résistance à la compression, permettant ainsi de maintenir la peau de moulage dans une position prédéfinie par rapport à la face inférieure.According to the invention, the volume of synthetic foam essentially serves as a retractor, between the upper skin molding, synthetic resin, and panel lower support. This foam element presents as advantage of being easily cut to the desired shape using a wire, abrasive or heating, in known manner in the technique, to be light, and to present a good compressive strength, allowing maintain the molding skin in a predefined position relative to the underside.

D'autres aspects, caractéristiques et avantages de l'invention apparaítront de la description qui suit, et du dessin annexé.Other aspects, features and benefits of the invention will become apparent from the following description, and of the attached drawing.

La figure 1 représente un élément de coffrage selon l'invention, etFigure 1 shows a formwork element according the invention, and

La Figure 2 est un schéma de principe du découpage d'un élément de coffrage selon l'invention.Figure 2 is a block diagram of the cutting of a formwork element according to the invention.

En se reportant à la figure 1, on y voit un élément de coffrage 1 selon l'invention, constitué d'un bloc 2 de mousse synthétique - généralement du polystyrène ou analogue - dont la face supérieure 3 est découpée à la forme d'un hélicoïde, et est recouverte d'une peau 4.Referring to Figure 1, we see an element formwork 1 according to the invention, consisting of a block 2 of synthetic foam - usually polystyrene or analogous - whose upper face 3 is cut to the shaped like a helicoid, and is covered with a skin 4.

La peau 4 est destinée à servir de surface étanche, de moulage du béton. Avant la coulée du béton, elle servira également de surface de travail pour les ouvriers, par exemple les ferrailleurs, et de support pour le ferraillage réalisé. Dans cette mesure, elle doit donc être essentiellement rigide et indéformable, pour répartir sensiblement sur l'ensemble de la surface de la mousse synthétique les charges localisées, par exemple le poids des ouvriers, et résister au poinçonnement, pour éviter qu'elle ne soit perforée par la chute d'outils, et analogues, ou encore par le ferraillage. The skin 4 is intended to serve as a waterproof surface, concrete molding. Before pouring concrete, it will also serve as a work surface for workers, for example scrap metal workers, and support workers for the reinforcement carried out. To this extent, it must therefore be essentially rigid and undeformable, for distribute substantially over the entire surface of the synthetic foam localized loads, for example the workers' weights, and resist punching, to prevent it from being punctured by falling tools, and analogues, or by the reinforcement.

Selon l'invention, la peau 4est réalisée en résine synthétique renforcée, qui assure les qualités d'étanchéité, de rigidité et de résistance au poinçonnement.According to the invention, the skin 4 is made of resin reinforced synthetic, which ensures the qualities tightness, rigidity and resistance to punching.

Selon l'invention, un tel élément de coffrage est réalisé de la manière suivante.According to the invention, such a formwork element is performed as follows.

Les paramètres de la surface hélicoïdale à mouler sont imposés par les caractéristiques de l'escalier à réaliser. La génératrice de la surface hélicoïdale étant une droite, ces paramètres servent à commander une machine de coupe à fil (fil chauffant ou fil abrasif) qui découpe un bloc de polystyrène pour donner à l'une des ses faces la forme voulue d'une section de l'hélicoïde.Parameters of the helical surface to be molded are imposed by the characteristics of the staircase to achieve. The generator of the helical surface being a line, these parameters are used to control a wire cutting machine (heating wire or abrasive wire) which cut a block of polystyrene to give one of the its faces the desired shape of a section of the helicoid.

Le schéma de principe d'un tel découpage est illustré à la figure 2, dans laquelle on voit un bloc brut 2 à découper, reposant sur un plateau 5 mobile en translation suivant la flèche H, et en rotation suivant la flèche R.The schematic diagram of such a division is illustrated in Figure 2, in which we see a block raw 2 to be cut, resting on a movable plate 5 in translation along arrow H, and in rotation according to arrow R.

Un fil de coupe 6 est d'autre part monté mobile dans le sens vertical sur des supports 7, 7', les vitesses de déplacement V, V' des deux extrémités du fil sont commandées indépendamment, ainsi que la vitesse de rotation R et la vitesse de translation H du plateau.A cutting wire 6 is also mounted movable in the vertical direction on supports 7, 7 ', the speeds of displacement V, V 'of the two ends of the wire are independently controlled, as well as the speed of rotation R and the speed of translation H of the plate.

Comme on comprendra, les mouvements combinés de translation et de rotation du plateau 5 amènent le fil 6 à pénétrer dans le bloc, et à le découper le long d'une surface dont les paramètres sont fournis par les vitesses V, V', R et H.As will be understood, the combined movements of translation and rotation of the plate 5 bring the wire 6 to penetrate the block, and cut it along a surface whose parameters are provided by the velocities V, V ', R and H.

Sur la face hélicoïdale ainsi formée, on applique ensuite un revêtement de protection, compatible avec la mousse synthétique du bloc, destiné à rendre la surface étanche au composant de résine fluide appliqué ultérieurement, pour protéger la masse d'une attaque par ce fluide. Dans le cas d'une mousse de polyuréthane, ce revêtement peut par exemple être une peinture au polyuréthane.On the helical face thus formed, apply then a protective coating, compatible with the synthetic foam of the block, intended to make the surface impervious to the applied resin component later to protect the mass from attack by this fluid. In the case of polyurethane foam, this coating can for example be a paint to polyurethane.

Sur la surface ainsi étanchée, on forme une peau rigide, constituée d'une résine synthétique, de préférence renforcée par un mat de fibres. De manière conventionnelle, on applique la résine à l'état fluide, après y avoir ajouté un durcisseur. Selon un mode de réalisation préféré, on forme un premier revêtement de résine, sur lequel on dépose le mat, auquel on superpose ensuite une seconde couche de résine, de manière à noyer le mat dans la résine. Pour obtenir une peau homogène, on la travaille de préférence au rouleau (débulleur) avant durcissement complet.On the surface thus sealed, a skin is formed rigid, made of synthetic resin, preferably reinforced with a fiber mat. So conventional, the resin is applied in the fluid state, after adding a hardener. According to a mode of preferred embodiment, a first coating of resin, on which the mat is deposited, on which we superimpose then a second layer of resin, so as to drown the mat in the resin. To obtain a homogeneous skin, we preferably works with a roller (spike) before complete hardening.

La résine sera par exemple une résine de polyester. Le mat est un mat de fibres inertes dans les conditions d'utilisation, par exemple des fibres de verre.The resin will for example be a polyester resin. The mat is a mat of fibers inert under the conditions of use, for example glass fibers.

On a ainsi obtenu un élément de coffrage 1 comportant une peau de moulage 4 étanche et rigide, de la forme voulue, soutenue par un élément de support 2 dans une position telle que, lorsque l'élément de support 2 est posé à plat sur un support horizontal, la peau 2 se trouve dans l'orientation voulue pour le moulage.We thus obtained a formwork element 1 comprising a tight and rigid molding skin 4, of the desired shape, supported by a support element 2 in a position such that when the support element 2 is laid flat on a horizontal support, the skin 2 is found in the desired orientation for molding.

De la sorte, après préparation des blocs 1, le coffrage de la face inférieure de l'escalier s'obtient très simplement, en soutenant les blocs à la hauteur voulue, sur des étais définissant un plan horizontal, avec interposition d'un panneau indéformable, généralement en bois ou aggloméré, entre les étais et la surface du polystyrène, pour répartir la charge sur l'ensemble de la surface.In this way, after preparation of blocks 1, the formwork of the underside of the stairs is obtained very simply, by supporting the blocks at the height wanted, on props defining a horizontal plane, with the interposition of a non-deformable panel, generally made of wood or chipboard, between the props and the polystyrene surface, to distribute the load on the whole surface.

On obtient ainsi un élément de coffrage léger, pouvant être manipulé par un ou deux hommes, dont la mise en place peut se faire par une main d'oeuvre non qualifiée (soutenir le bloc horizontalement, à la hauteur voulue), dont la surface de moulage permet le déplacement d'un homme, par exemple le ferrailleur, et également de supporter le ferraillage.This gives a light formwork element, can be handled by one or two men, in place can be done by a labor not qualified (support the block horizontally, at the height desired), whose molding surface allows movement of a man, for example the scrap dealer, and also of support the reinforcement.

Claims (12)

Élément de coffrage pour la face inférieure, hélicoïdale, d'un escalier de révolution, caractérisé en ce qu'il comprend
un bloc de matière synthétique en mousse, rigide, présentant une face inférieure d'appui, sensiblement plane, et une face supérieure hélicoïdale, d'axe perpendiculaire à la face inférieure, correspondant à la face inférieure de l'escalier en béton à couler,
une peau de moulage, imperméable et indéformable, recouvrant ladite face supérieure.Formwork element for the helical underside of a staircase of revolution, characterized in that it comprises
a block of rigid foam synthetic material, having a substantially flat lower face, and a helical upper face, of axis perpendicular to the lower face, corresponding to the lower face of the concrete staircase to be poured,
a molding skin, waterproof and non-deformable, covering said upper face. Elément de coffrage selon la revendication 1, caractérisé en ce que ladite matière synthétique en mousse est du polystyrène expansé.Formwork element according to claim 1, characterized in that said synthetic foam material is expanded polystyrene. Elément de coffrage selon la revendication 1, caractérisé en ce que ladite peau est constituée de résine synthétique durcie.Formwork element according to claim 1, characterized in that said skin is made of hardened synthetic resin. Elément de coffrage selon la revendication 3, dans lequel la résine est une résine de polyester.Formwork element according to claim 3, wherein the resin is a polyester resin. Elément de coffrage selon la revendication 3 ou 4, caractérisé en ce que la résine est une résine renforcée de fibres.Formwork element according to claim 3 or 4, characterized in that the resin is a fiber-reinforced resin. Elément de coffrage selon la revendication 1, caractérisé en ce que ledit élément de coffrage couvre la surface inférieure d'un quartier de l'escalier.Formwork element according to claim 1, characterized in that said formwork element covers the lower surface of a quarter of the staircase. Procédé de fabrication d'un élément de coffrage de la face inférieure, hélicoïdale, d'un escalier de révolution en béton, comprenant les étapes consistant à prévoir un bloc, généralement parallélépipédique, de mousse en matière synthétique rigide, découper ledit bloc, à l'aide d'un moyen de coupe filiforme, suivant une surface hélicoïdale d'axe perpendiculaire à une face de base, ladite surface hélicoïdale ainsi façonnée correspondant à ladite surface hélicoïdale à coffrer, appliquer sur ladite surface hélicoïdale du bloc un revêtement de résine durcissable, et faire durcir la résine pour obtenir une peau solide, destinée au moulage du béton, Method of manufacturing a formwork element for the helical underside of a concrete revolution staircase, comprising the steps of provide a block, generally parallelepiped, of rigid plastic foam, cutting said block, using a thread-like cutting means, along a helical surface with an axis perpendicular to a base face, said helical surface thus shaped corresponding to said helical surface to be shuttered, applying a coating of hardenable resin to said helical surface of the block, and hardening the resin to obtain a solid skin intended for molding concrete, Procédé selon la revendication 5, caractérisé en ce qu'il comprend l'étape supplémentaire d'application d'un revêtement étanche, résistant à la résine à l'état non durci, sur la surface hélicoïdale du bloc, avant application de la résine.Method according to claim 5, characterized in that it comprises the additional step of applying a waterproof coating, resistant to the resin in the uncured state, on the helical surface of the block, before application of the resin. Procédé selon la revendication 7 ou 8, caractérisé en ce qu'il comprend de plus l'étape consistant à noyer un mat de fibres dans la résine, pour la renforcer.Method according to claim 7 or 8, characterized in that it further comprises the step of embedding a mat of fibers in the resin, to reinforce it. Procédé selon la revendication 5, caractérisé en ce que la mousse est une mousse de polyuréthane.Method according to claim 5, characterized in that the foam is a polyurethane foam. Procédé selon la revendication 5, caractérisé en ce que la résine est une résine de polyester.Method according to claim 5, characterized in that the resin is a polyester resin. Procédé selon l'une quelconque des revendications 7 à 11, caractérisé en ce qu'il comprend de plus l'étape consistant à coller un panneau rigide sur la face de base.A method according to any one of claims 7 to 11, characterized in that it further comprises the step of gluing a rigid panel on the base face.
EP02447232A 2002-11-28 2002-11-28 Shuttering element and its method of production Withdrawn EP1424458A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02447232A EP1424458A1 (en) 2002-11-28 2002-11-28 Shuttering element and its method of production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02447232A EP1424458A1 (en) 2002-11-28 2002-11-28 Shuttering element and its method of production

Publications (1)

Publication Number Publication Date
EP1424458A1 true EP1424458A1 (en) 2004-06-02

Family

ID=32241395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02447232A Withdrawn EP1424458A1 (en) 2002-11-28 2002-11-28 Shuttering element and its method of production

Country Status (1)

Country Link
EP (1) EP1424458A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017129740A1 (en) 2017-12-13 2019-06-13 Peri Gmbh Formwork for the construction of a building
RU2706998C2 (en) * 2011-12-09 2019-11-21 Микеле КАБОНИ Pantographic machine equipped with blades and heated cutting pre-profiled puncheons and cutters for treatment of panels, in particular panels for permanent shuttering icf, on the whole made of foamed materials

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086636A5 (en) * 1970-04-03 1971-12-31 Wamant Serge Plastic mould - for use with concrete
DE2854888A1 (en) * 1978-12-19 1980-06-26 Koch & Meyer Bauunternehmung G Domed open bottom building demountable internal formwork - comprises section assembled hard foam block held on base slab against walls
EP0148363A1 (en) * 1983-11-12 1985-07-17 Benno Domesle Method to manufacture a building staircase or a staircase element, shuttering for carrying out this method
DE4420849A1 (en) 1994-06-15 1995-12-21 Clemens Evers Method of manufacturing concrete stair underside shuttering
DE19627975A1 (en) * 1996-07-11 1997-03-13 Mathias Schulze Use of recycled polystyrene for mfg. shuttering sections for concrete
DE19617602A1 (en) * 1996-05-02 1997-11-06 Frank Gmbh & Co Kg Max Concrete formwork with element consisting of a block of foamed plastics
DE10004254A1 (en) * 2000-02-01 2001-08-09 Arno Kahle Curved concrete molding shell is composed of a number of shell blocks with curved molding surfaces assembled together to give the required shape and dimensions to the cast concrete

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086636A5 (en) * 1970-04-03 1971-12-31 Wamant Serge Plastic mould - for use with concrete
DE2854888A1 (en) * 1978-12-19 1980-06-26 Koch & Meyer Bauunternehmung G Domed open bottom building demountable internal formwork - comprises section assembled hard foam block held on base slab against walls
EP0148363A1 (en) * 1983-11-12 1985-07-17 Benno Domesle Method to manufacture a building staircase or a staircase element, shuttering for carrying out this method
DE4420849A1 (en) 1994-06-15 1995-12-21 Clemens Evers Method of manufacturing concrete stair underside shuttering
DE19617602A1 (en) * 1996-05-02 1997-11-06 Frank Gmbh & Co Kg Max Concrete formwork with element consisting of a block of foamed plastics
DE19627975A1 (en) * 1996-07-11 1997-03-13 Mathias Schulze Use of recycled polystyrene for mfg. shuttering sections for concrete
DE10004254A1 (en) * 2000-02-01 2001-08-09 Arno Kahle Curved concrete molding shell is composed of a number of shell blocks with curved molding surfaces assembled together to give the required shape and dimensions to the cast concrete

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2706998C2 (en) * 2011-12-09 2019-11-21 Микеле КАБОНИ Pantographic machine equipped with blades and heated cutting pre-profiled puncheons and cutters for treatment of panels, in particular panels for permanent shuttering icf, on the whole made of foamed materials
DE102017129740A1 (en) 2017-12-13 2019-06-13 Peri Gmbh Formwork for the construction of a building

Similar Documents

Publication Publication Date Title
FR2923173A1 (en) PROCESS FOR MANUFACTURING CONSTRUCTION COMPONENTS BASED ON A MIXTURE OF GRANULATES AND POWDER OF NATURAL STONE, BINDER AND ADDITIVES, CONSTRUCTION COMPONENTS OBTAINED AND MACHINE FOR IMPLEMENTING THE SAME
FR2523627A1 (en) METHOD FOR CONFORTING ARCHES OR SIMILAR CONSTRUCTIONS
EP1424458A1 (en) Shuttering element and its method of production
FR2478704A1 (en) REINFORCED CONCRETE FLOOR WITH PERMANENT FORMWORK
FR2720416A1 (en) Method for manufacturing cladding elements cut from a composite slab and cladding element obtained.
FR2507647A1 (en) Composite prefabricated construction panel - has grooved insulation to concrete interface to aid connection between them
EP2041046A1 (en) Method for consolidating natural stone blocks for subsequent sawing
WO2013061332A1 (en) Manhole cover
FR3011565A1 (en) PRECONTRATED MORTAR TERRACE BLADE, METHOD OF MANUFACTURING SUCH BLADE, MOLD FOR MANUFACTURING SUCH BLADE
FR2835272A1 (en) Method for making insulating wall comprises pouring concrete into horizontal mold, placing insulating panel inside mold, removing assembly from mold, pouring second concrete layer into mold and returning assembly to mold
FR2743585A1 (en) Panel construction manufacturing method
CA2152738C (en) Production process of siding elements cut in a composite slab and siding elements obtained thereof
FR2636082A1 (en) Footbridge, in particular for pedestrians
FR2515567A1 (en) Method of forming precast concrete wall panel - has polygonal rubble face using soaked elastic foam to mount stones on bed with sand forming recessed joints
FR2732701A1 (en) Decorative slab elements for vertical walls
US816171A (en) Artificial-stone post or column.
WO2023247877A1 (en) Method for producing a wall, wall comprising a plurality of construction elements and mould for producing a construction element
JP2004239036A (en) Fence building method by foamed synthetic resin plate
FR2937345A1 (en) Decorative slab for use on e.g. block, has stoneware based upper decorative layer fixed on concrete lower support layer, where lower support layer is realized by hydraulic cement based construction material
EP0282553A1 (en) Method for making reinforced concrete elements
FR2579250A1 (en) Prefabricated tiles for external coverings ribbed at the lower part, made up at the surface of concrete or resin and at the underside of lightweight expanded polystyrene concrete. Machine and system for prefabrication. Finishing machine for fitting
CA1036797A (en) Building panels
JPH0881965A (en) Molding plate of form for constructing retaining wall
FR2679582A1 (en) Composite shuttering (formwork) skin
FR2856092A1 (en) Concrete floor or concrete slab thinning unit for construction e.g. house, has air evacuation unit to prevent entry of concrete into cavity, and to permit outlet of air from cavity in case of high pressure in cavity, during fire

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

17P Request for examination filed

Effective date: 20041129

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20070129