EP0002267B1 - Procédé pour la fabrication d'éléments en béton renforcés par des fibres, et éléments obtenus selon ledit procédé - Google Patents

Procédé pour la fabrication d'éléments en béton renforcés par des fibres, et éléments obtenus selon ledit procédé Download PDF

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Publication number
EP0002267B1
EP0002267B1 EP78101501A EP78101501A EP0002267B1 EP 0002267 B1 EP0002267 B1 EP 0002267B1 EP 78101501 A EP78101501 A EP 78101501A EP 78101501 A EP78101501 A EP 78101501A EP 0002267 B1 EP0002267 B1 EP 0002267B1
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EP
European Patent Office
Prior art keywords
fibers
filament structure
cement
fabric
shreds
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
Application number
EP78101501A
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German (de)
English (en)
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EP0002267A1 (fr
Inventor
Hermann Schemel
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Individual
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Individual
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    • 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
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0006—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects the reinforcement consisting of aligned, non-metal reinforcing elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/04—Mats
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E04C5/073—Discrete reinforcing elements, e.g. fibres

Definitions

  • the invention relates to a method for producing fiber-reinforced molded concrete parts, in which a lattice-like laid scrim is incorporated into cementitious masses, which, before being incorporated into the cementitious mass, is first provided with an adhesive and then exposed to a stream of solids which adhere to the laid scrim, and Molded parts made of cement produced by this process.
  • Molded parts are also to be understood here as building material panels.
  • a reinforcement element for concrete made of glass fiber reinforced plastics in which a grain of quartz powder and fine chippings is attached to the reinforcement element to increase the adhesive strength between the reinforcement element and concrete, or the reinforcement element is spirally wrapped with profiled strips. Even when using reinforcement elements treated in this way, flexible multidirectional reinforcement grids are not created.
  • asbestos is used as the reinforcing fiber.
  • Cement is used here as a hydraulic binder to process the relatively fine fibers, which are often only a few millimeters long. The process is reminiscent of the manufacture of cardboards.
  • a thin cement pulp forms fine asbestos cement fleeces on a drum, which run on top of each other until the desired thickness is reached. They can then be removed and compressed under pressure.
  • This method can also be used successfully when large amounts of water are added to the asbestos-cement mixture.
  • the binding power of the cement is preserved through the close hydraulic combination with mineral fibers.
  • glass fibers or synthetic fibers cannot be processed using this method. Here the binding power of the cement is lost.
  • DE-A-2 409 231 discloses a process for the production of shaped articles solidified by inorganic binders and reinforced by mineral fibers.
  • flat reinforcement mats impregnated with binder glue or mortar which consist of artificial mineral fibers, are placed one above the other and / or next to one another in the fresh, non-set state until the desired reinforcement is achieved.
  • binder glue or mortar which consist of artificial mineral fibers
  • shear-resistant connections of the different fiber mats can be achieved by sewing with mineral fiber bundles.
  • the known method cannot be used to create reinforcement with reinforcement fibers that are perpendicular or transverse to the mats. This means that - due to the nature of the known method - no multidirectional reinforcement with a high degree of fineness can be created.
  • Another method is based on the use of a concrete spray can, which brings together semi-liquid cement mortar with small amounts of cut glass fibers.
  • the fibers fall on the documents and are e.g. already connected with cement when falling, sometimes only embedded in this porridge on the base.
  • multidirectional reinforcement is created, this process is extremely labor-intensive and depends on the reliability of the executing worker. Traps e.g. several pieces of fiber on top of each other, so that the cement mass cannot penetrate into the spaces. Weaknesses arise in the reinforcement, which lead to breakage when the finished parts are loaded.
  • the invention has for its object to provide a reliable method to incorporate fibers of all kinds in concrete masses. It must be suitable to reinforce plates, molded parts and other articles that can be produced from cement masses in such a way that a fast work flow and a uniformly high multi-directional strength with the finest resolution are guaranteed.
  • a laid scrim, a woven fabric or a net is first produced, in which more or less parallel threads are located at a certain distance from one another. This distance can be varied within wide limits. It can be a few millimeters or on the order of e.g. 10 cm.
  • fibers or tissue chips are arranged on this thread structure.
  • the laid scrim can consist of endless fiber filaments or staple fiber yarns.
  • the fibers can consist of the same materials or of completely different types of fibers if special properties of the concrete are to be achieved. Their length can also be varied. It can range from a few millimeters to many centimeters.
  • some parameters of the reinforcement structure must be coordinated with one another: for example, the spacing of the threads of the scrim and the length of the threads on the scrim arranged fibers and their elasticity can be varied.
  • the process is such that the applied fibers experience a multidirectional arrangement, namely in the plane of the thread structure and protrude from this plane. This enables three-dimensional reinforcement to be achieved.
  • the product combined from continuous threads and cut fibers remains so open on its surface that it is easily separated from the pulpy cement mass e.g. can be enclosed in an automated process.
  • uncontrolled accumulations of fibers on the scrim are avoided by first providing the scrim with an adhesive and then exposing it to an air flow with fibers which then remain on the scrim with different, arbitrary orientations. Non-stick fibers fall off again. Fiber masses that are difficult to penetrate by cement masses are avoided.
  • Another method variant provides for roughening the threads of the laid scrim. It is advantageous to solidify the fabric with a fixing agent. This can be done easily with a thinly set cement slurry. The solidification can take place by spraying, by dipping or by doctoring. This method is used in particular when compression of the voluminous reinforcement structure is to be avoided in the subsequent work process.
  • the manufacturing process for the reinforcement structure is not tied to a specific type of fiber.
  • Glass filaments can be used, the high strength of which does not change due to the influences of the cement.
  • synthetic yarns for example made of polypropylene, are also suitable, which above all improve the burst strength of the concrete.
  • a combination of structural steel grids or wire mesh with fibers or fabric chips or fabric strips is also possible, or the use of natural fibers such as sisal. Even those fibers that cannot withstand the aggressive media of the cement are suitable for the lattice structure if the fibers applied have this resistance.
  • the cut fibers or yarns which are intended to supplement the properties of the reinforcement structure, can also be made from the glass fiber type mentioned, from polyamides and other synthetic fibers or from steel fibers or Wire exist. It is not important that, for example, a glass fiber laid scrim can only be provided with cut glass fibers and a thread system made of synthetic fibers can only be provided with the same pieces of fiber. With the help of this manufacturing process, it is possible for the first time to incorporate precisely metered mixtures of these fibers with each other into concrete and thus achieve new properties of the products. Another advantage over the known reinforcement methods with fibers results from the fact that partial areas of a component or a plate that are particularly stressed are reinforced.
  • Glass-fiber-reinforced panels can be produced in such a way that they have a very high breaking strength, which allows, for example, nailing.
  • the edge zones of a plate that is nailed can be additionally reinforced using this method.
  • sandwich panels with a hard foam core are mentioned.
  • the rigid foam core can consist, for example, of polystyrene, polyurethane or foamed concrete, foamed concrete in particular being interesting because of its low price. If you bring e.g. A thin layer of cement mortar on polystyrene plates, in which the reinforcement structure described is embedded, creates a stable and stable plate that complements the good thermal insulation properties of the polystyrene through the reinforcement of the strength of the plate surface, without losing the ease of processing by woodworking machines.
  • a board made by the method of the invention will preferably be made of cement.
  • the building material panel contains an inner layer made of polyurethane foam.
  • the laid scrim according to the invention consists of the longitudinal or warp threads 1 and the transverse or weft threads 2. This scrim was impregnated with pressure sensitive adhesive and then exposed to a stream of fibers or fiber chips 3. The fibers 3 adhere to the threads of the laid scrim with different orientations and form a three-dimensional, multidirectional reinforcement structure with this. This is then incorporated into a cement paste using one of the methods already described.
  • FIG. 2 shows a cross section of a building material board produced by the method according to the invention.
  • This consists of an inner carrier layer 10 made of polyurethane foam, on which cement plates 11 reinforced according to the invention are attached on both sides.
  • the polyurethane foam layer is preferably covered with a reinforcement structure consisting of laid scrims and the fibers attached to them.
  • liquid cement is sprayed onto the occupied side of the polyurethane foam layer with a nozzle up to a layer thickness of a few millimeters.
  • the thickness of the polyurethane foam layer 10 is approximately one centimeter.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
  • Reinforcement Elements For Buildings (AREA)

Claims (12)

1. Procédé pour la fabrication de pièces moulées de béton armé de fibres, consistant à incorporer, dans des bouillies de ciment, une couche de fils sembalble à un treillis qui, avant d'être incorporée dans la bouillie de ciment, est tout d'abord garnie d'une matière adhésive, puis est exposée à un courant de matières solides qui restent collées à la couche de fils, caractérisé en ce qu'on utilise, en tant que matière solides, des fibres ou des rognures de tissu qui pénètrent à travers la couche de fils garnie d'une colle de contact en tant que matière adhésive, en y adhérant.
2. Procédé selon la revendication 1, caractérisé en ce que les fibres ou rognures de tissu sont appliquées au moyen d'un courant d'air sur la couche de fils garnie de la colle de contact.
3. Procédé selon la revendication 1, caractérisé en ce que les fils de la couche de fils sont rendus rugueux.
4. Procédé selon la revendication 1, caractérisé en ce qu'on utilise, en tant que couche de fils, des bandes de matière tissée ou tricotée.
5. Procédé selon la revendication 1, caractérisé en ce que la couche de fils garnie des fibres ou des rognures de tissu est incorporée dans une bouillie de ciment fluide.
6. Procédé selon la revendication 1, caractérisé en ce qu'avant d'être incorporée dans la bouillie de ciment, la couche de fils garnie des fibres ou des rognures de tissu est soumise à une pulvérisation et à une pré-fixation avec du ciment liquide.
7. Pièce moulée en ciment, fabriquée d'après un procédé selon l'une quelconque des revendications 1 à 6, caractérisée par au moins une couche de fils semblable à un treillis (1, 2) à laquelle adhérent et à travers laquelle pénètrent des fibres ou rognures de tissu (3) orientées obliquement ou transversalement par rapport à la surface en treillis.
8. Pièce moulée selon la revendication 7, caractérisée en ce que la couche de fils (1, 2) et/ou les fibres ou rognures de tissu (3) sont faites de fils synthétiques, de préférence en matière synthétique renforcée de fibres.
9. Pièce moulée selon la revendication 7, caractérisée en ce que la couche de fils (1, 2) et/ou les fibres (3) sont faites de fibres naturelles, telles que le sisal.
10. Pièce moulée selon la revendication 7, caractérisée en ce que la couche de fils (1, 2) et/ou les fibres (3) sont faites de fibres d'acier.
11. Pièce moulée selon la revendication 8, caractérisée en ce qu'elle est en forme de plaque et contient une couche intérieure (10) en mousse de polyuréthane.
12. Pièce moulée selon la revendication 8, caractérisée en ce qu'elle contient en plus une armature de métal en soi connue.
EP78101501A 1977-12-02 1978-12-01 Procédé pour la fabrication d'éléments en béton renforcés par des fibres, et éléments obtenus selon ledit procédé Expired EP0002267B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2753858A DE2753858C3 (de) 1977-12-02 1977-12-02 Verfahren zum Herstellen von faserbewehrten Betonformteilen und nach diesem Verfahren hergestellte Formteile
DE2753858 1977-12-02

Publications (2)

Publication Number Publication Date
EP0002267A1 EP0002267A1 (fr) 1979-06-13
EP0002267B1 true EP0002267B1 (fr) 1980-12-10

Family

ID=6025225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101501A Expired EP0002267B1 (fr) 1977-12-02 1978-12-01 Procédé pour la fabrication d'éléments en béton renforcés par des fibres, et éléments obtenus selon ledit procédé

Country Status (5)

Country Link
US (1) US4257993A (fr)
EP (1) EP0002267B1 (fr)
AT (1) AT359902B (fr)
CA (1) CA1089669A (fr)
DE (2) DE2753858C3 (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297414A (en) * 1978-07-07 1981-10-27 Mitsui Petrochemical Industries, Ltd. Reinforcing material for hydraulic substances and method for the production thereof
IE49426B1 (en) * 1980-03-18 1985-10-02 Tegral Technology Ltd Method of making asbestos-free,glass fibre reinforced,cement composite products and the products of such method
DE3325879A1 (de) * 1982-07-27 1984-02-02 Karl 6078 Neu-Isenburg Karner Armierungsgitter aus verschiedenen werkstoffen
GB2120475B (en) * 1982-10-05 1983-12-29 Frank Brian Mercer Strenhthening a matrix
US4662946A (en) * 1982-10-05 1987-05-05 Mercer Frank B Strengthening a matrix
EP0172028B1 (fr) * 1984-08-16 1991-01-23 Mitsui Kensetsu Kabushiki Kaisha Objet inorganique renforcé par des fibres
GB8429992D0 (en) * 1984-11-28 1985-01-09 Permanent Formwork Ltd Fibre reinforced cement
DE4002601C2 (de) * 1990-01-30 2002-08-29 Krueger & Schuette Kerapid Vorgefertigtes, transportierbares, selbsttragendes Bauelement, wie Platte, Wand oder Formteil
FR2685368B1 (fr) * 1991-12-19 1994-02-18 Paturle Composites Profile en materiau composite pour le renforcement de parois diverses, et des betons, et pour la consolidation des sols, et son procede de fabrication.
US5218810A (en) * 1992-02-25 1993-06-15 Hexcel Corporation Fabric reinforced concrete columns
US5888608A (en) * 1995-08-15 1999-03-30 The Board Of Trustees Of The Leland Stanford Junior University Composite grid/frame structures
EP0876524B1 (fr) * 1996-01-15 2003-10-01 Donald Henry Hourahane Procede de renforcement pour produits en beton et produits en beton arme
DE19705180C2 (de) * 1997-02-11 2003-06-12 Ispo Gmbh Armierungsgewebe
DE19808078A1 (de) * 1998-02-21 1999-09-16 Holzmann Philipp Ag Vorzugsweise aus Metallteilen bestehende Matte zur Bildung tragender und abdichtender Betonteile
US6976345B2 (en) * 1999-04-05 2005-12-20 Firouzeh Keshmiri Cementitious based structural lumber product and externally reinforced lightweight retaining wall system
AU2003270740A1 (en) * 2002-09-25 2004-04-19 The Intertech Group, Inc. Fiber reinforced cementitious material
WO2005085545A1 (fr) 2004-03-03 2005-09-15 Gert Wagener Tige d'armature destinee a des materiaux mineraux
AU2005244578B2 (en) * 2004-12-16 2012-03-15 The Austral Brick Company Pty Ltd Reinforced cementitious material product and method of manufacture of the same
DE102008040919A1 (de) * 2008-08-01 2010-02-04 MAX BÖGL Fertigteilwerke GmbH & Co. KG Verfahren zur Herstellung eines Betonbauteiles mit einer polymergetränkten textilen Bewehrung sowie Betonbauteil mit einer polymergetränkten textilen Bewehrung
PT2981659T (pt) * 2013-04-04 2017-12-26 Bekaert Sa Nv Estrutura de reforço de alvenaria compreendendo cabos paralelos
DE102014000316B4 (de) 2014-01-13 2016-04-07 Goldbeck Gmbh Verbundbauteil aus auf Stahlträgern aufgelagerten Deckenbetonfertigteilen
FR3028447B1 (fr) * 2014-11-14 2017-01-06 Hutchinson Panneau composite a matrice thermodurcissable cellulaire, procede de fabrication et structure de revetement de paroi formee d'un assemblage de panneaux.
IT201700080359A1 (it) * 2017-07-17 2019-01-17 Plastiron Srls Rete per rinforzo strutturale e leganti idraulici comprendenti tale rete
WO2020053008A1 (fr) * 2018-09-13 2020-03-19 Nv Bekaert Sa Couche renforcée hybride de béton projeté
AU2019240725B1 (en) * 2019-10-07 2020-08-27 Duy Huu Nguyen Fiber-reinforced concrete – guided distribution methods for fibers in conventional construction

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD39245A (fr) *
DD41435A (fr) *
AT141243B (de) * 1933-10-20 1935-03-25 Leopold Kalousek Verfahren zur Herstellung von Asbestzementkörpern mit einer Faserumhüllung versehenen Drahteinlage.
US3489626A (en) * 1957-12-11 1970-01-13 Chemstress Ind Inc Method of making a prestressed,reinforced,resin-crete concrete pipe
DE1762244U (de) * 1957-12-23 1958-02-27 Asbestschieferfabrik Braunschw Asbestzement-platte od. dgl. mit metalleinlage.
US3637457A (en) * 1970-06-08 1972-01-25 Monsanto Co Nylon spun bonded fabric-concrete composite
DE2357557C2 (de) * 1973-11-17 1975-11-20 Friedrich 7407 Moessingen Haarburger Verstärkungseinlage für Leichtbaukörper
DE2409231A1 (de) * 1974-02-27 1975-09-04 Heidelberg Portland Zement Verfahren zur herstellung von durch anorganische bindemittel verfestigten und durch mineralfasern verstaerkten raumformkoerpern

Also Published As

Publication number Publication date
US4257993A (en) 1981-03-24
AT359902B (de) 1980-12-10
DE2753858B2 (de) 1980-03-06
CA1089669A (fr) 1980-11-18
ATA855778A (de) 1980-04-15
EP0002267A1 (fr) 1979-06-13
DE2753858C3 (de) 1980-10-23
DE2753858A1 (de) 1979-06-07
DE2860319D1 (en) 1981-02-19

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