WO1999047469A1 - Systeme de plaques de staff et mastic de jointoiement approprie - Google Patents

Systeme de plaques de staff et mastic de jointoiement approprie Download PDF

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Publication number
WO1999047469A1
WO1999047469A1 PCT/EP1999/001669 EP9901669W WO9947469A1 WO 1999047469 A1 WO1999047469 A1 WO 1999047469A1 EP 9901669 W EP9901669 W EP 9901669W WO 9947469 A1 WO9947469 A1 WO 9947469A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
gypsum
joint filler
gypsum fiber
joint
Prior art date
Application number
PCT/EP1999/001669
Other languages
German (de)
English (en)
Inventor
Winfried Spickermann
Markus Fischer
Heinz-Joachim Butz
Adolf Fiedler
Erwin Borns
Original Assignee
Rigips Gmbh
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 Rigips Gmbh filed Critical Rigips Gmbh
Priority to AU30349/99A priority Critical patent/AU3034999A/en
Publication of WO1999047469A1 publication Critical patent/WO1999047469A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/16—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of fibres or chips, e.g. bonded with synthetic resins, or with an outer layer of fibres or chips

Definitions

  • the invention relates to a gypsum fibreboard with a special edge formation and a joint filler suitable for the joint formed.
  • Gypsum fiber boards have been known for many years, for example from DE 1 784 657. In contrast to plasterboard, they have no paper coating and are stronger than plasterboard. Furthermore, they have a directional independence in many load cases. They are therefore better suited for certain applications than gypsum plasterboard, for which, however, a higher weight has to be accepted than gypsum plasterboard.
  • the known gypsum fibreboards always have a right-angled edge and must be laid at a distance.
  • the resulting joint is filled with a joint filler, which is of particular importance with regard to the tensile strength and bending tensile strength of the filled joint.
  • a disadvantage of the use of known gypsum fiber boards and the joint filler used for this is that care must be taken when laying the boards that the boards are laid in a certain grid dimension and a distance of about 5 mm between the boards is constantly maintained.
  • Well-known gypsum fiber boards are - 2 -
  • the object of the invention is to provide a system of gypsum fiber boards and a joint filler, which ensures faster laying with sufficiently firm joint connection of the individual boards to one another.
  • a gypsum fibreboard which has at least one chamfered edge, the chamfered edge having a web perpendicular to the board surface, the height of which is 5 to 50% of the board thickness, but at least 1 mm, and the bevel width is at least 3 mm, and a joint filler for filling the joint spaces created by the gypsum fibreboard laid on the joint, the 70 to 9.8% stucco plaster with a particle size of ⁇ 300 ⁇ m, 0.02 to 0.5% starch ether, 0.2 to 1% methyl cellulose, 0.5 to 3 % Polyvinyl alcohol, 0.001 to 0.1% of a boric acid or an alkali metal or alkaline earth metal salt of a boric acid.
  • a gypsum fiber board system is provided for the first time, which on the one hand enables the boards to be laid simply butt and on the other hand the desired firm bond between such boards.
  • the joints created by laying the gypsum fiber boards according to the invention are easier to fill than when using conventional gypsum fiber boards and have the required joint strength.
  • EP 227 876 B1 describes plasterboard with a rounded edge and a joint filler for the joint spaces specially formed with these plates.
  • Gypsum plasterboards are generally lighter than gypsum fibreboards of the same thickness. So that a firm bond is created between the heavier gypsum fibreboards, which has therefore been assumed so far that this can only be achieved by traditional laying with a sufficiently large joint space and backfilling with a correspondingly large amount of a joint filler.
  • the rounded edges of the plasterboard are covered with a layer of cardboard, so that on the one hand the edge is stabilized and on the other hand the joint filler used is adapted to adhere well to the paper surface.
  • the chamfer of the gypsum fiber boards according to the invention must be designed such that the web height of the gypsum fiber board edge is 5 to 50% of the board thickness, but at least 1 mm. If the web height is less than 5% of the board thickness or 1 mm, the edge can break off when chamfering, transporting or installing the gypsum fibreboard. If, on the other hand, the web is significantly higher than 50% of the panel thickness, the joint space becomes too small and the amount of joint filler that can be used to fill the joint is not sufficient to ensure the desired joint strength.
  • Gypsum fiber boards used according to the invention include all types of gypsum fiber boards. They can be built up homogeneously over the entire thickness or be multi-layered. Multilayer gypsum fibreboards have a core layer and at least one top layer. The thickness of the - 4 -
  • Core layer can make up 25 to 50% of the gypsum fiber board thickness.
  • the edge should be chamfered so that the chamfer or the fiber leg is straight, concave or convex.
  • the edges can be chamfered at the factory or on site with a hand tool.
  • the main ingredient is a ß-hemihydrate gypsum (stucco gypsum), which may contain small amounts of other calcium sulfates due to the manufacturing process.
  • the stucco plaster is present in the dry joint filler mixture in an amount of 70 to 98% by weight, preferably 90 to 97% by weight.
  • a starch ether is preferably used as the thickener. Hydroxypropyl starches are particularly preferred starch ethers. These thickeners are used in an amount of 0.02 to 0.5% by weight, preferably 0.1 or 0.2 to 0.3% by weight.
  • Methyl celluloses are preferably used as water retention agents. The water retention agent is used in an amount of 0.2 to 1% by weight, preferably 0.5 to 0.8% by weight.
  • the dry joint filler mixture according to the invention contains polyvinyl alcohol and boric acid or an alkali / alkaline earth metal salt of boric acid as further essential constituents.
  • Boric acid and its salts promote the crosslinking of the polyvinyl alcohol and increase the strength of the joint filler and the adhesive strength of the joint filler to the gypsum fibreboard.
  • Gypsum-bonded joint fillers commonly include retarders, accelerators, wetting agents and defoamers.
  • a protein retarder can be used as a retarder, for example in an amount of 0.01 to 0.5% by weight.
  • the accelerator can be used in an amount of 0.1 to 1% by weight, especially if it is a dihydrate accelerator.
  • a wetting agent can be used, for example, in amounts of up to 0.1% by weight and a defoamer in an amount of up to 0.2% by weight.
  • the joint filler can contain mineral additives such as limestone powder (calcium carbonate), mica or mixtures of individual mineral additives. These are preferably used in an amount of up to 25% by weight in the dry joint filler mixture.
  • mineral additives such as limestone powder (calcium carbonate), mica or mixtures of individual mineral additives. These are preferably used in an amount of up to 25% by weight in the dry joint filler mixture.
  • the joint filler is to be further thickened, it has proven advantageous to add a polyacrylamide or polymethylacrylamide to the mixture.
  • the amount of this additional thickener depends on the desired viscosity and can be up to 0.1% or more, preferably up to 0.06% by weight.
  • the viscosity and toughness of the joint filler can be further controlled by adding fibers, in particular cellulose fibers.
  • Cellulose fibers can, for example, be added to the dry joint filler mixture in amounts of up to 1% by weight. - 6 -
  • the joint filler according to the invention is dimensionally stable and elastic, so that neither cracking nor bulging are to be expected.
  • the stresses that occur in the composite of the comparatively heavy gypsum fibreboards due to external loads are absorbed by the joint without this having an adverse effect on the joint.
  • the dry joint filler mixture is mixed with water in a known manner.
  • a water / dry joint filler mixture ratio of approximately 0.9 has proven to be practical.
  • grouting or filling can be carried out using a reinforcement strip that is embedded in the grout during filling.
  • the two figures show two different configurations of the edge of the gypsum fibreboard 1 according to the invention.
  • the chamfer 2 or fiber leg 2 can be straight as shown in FIG. 1 or convex or concave, as indicated in FIG. 2.
  • the remaining rectangular web 3 of the edge allows the gypsum fiber boards to be laid in a butt joint.
  • the depth of the chamfer is responsible for the joint volume and thus the amount of joint filler that can be introduced, with the angle between the imaginary extension of the web 3 and the chamfer leg 2.
  • the gypsum fiber boards according to the invention can be produced by the so-called wet process, the dry process or semi-dry process. All methods are described in the relevant literature and known to the expert. The semi-dry method described in WO 93/01932 is particularly recommended, the disclosure of which is referred to here by way of example.
  • All plasters capable of setting can be used as gypsum for the production of gypsum fibreboard, ß-hemihydrate gypsum are particularly suitable. Mixtures of ß-hemihydrate gypsum and other setting gypsum can be used.
  • Cellulose fibers, mineral fibers and synthetic fibers come into consideration as fibers.
  • Cellulose fibers in the form of wood waste, paper waste and cardboard waste are preferred. Waste paper fibers are particularly preferred.
  • the amount of fibers in the board is, for example, 5 to 45% by weight, particularly preferably 8 to 20% by weight, based on the weight of the finished gypsum fiber board.
  • the fiber concentrations in the individual layers can be different. It is also conceivable that a layer contains almost no fibers.
  • the core layer will preferably contain a light aggregate.
  • Suitable light aggregates are perlite, foam glass granulate or expanded vermiculite.
  • concentration of the lightweight aggregates depends on the desired weight and, in the case of single-layer panels, on their surface properties obtained after adding the lightweight aggregate - 8th -
  • the middle layer of a three-layer plate it can be 2 to 50% by weight, in particular about 30% by weight, based on the weight of the middle layer.
  • the gypsum fibreboard contains common additives.
  • additives are, for example, setting accelerators, setting retarders, wetting agents, agents which prevent the clumping of the fibers, such as lime, cement, and fining agents, such as bentonite.
  • the production of the gypsum fiber boards is described below by way of example.
  • First, part or all of the cellulose fibers are moistened with mixing water in a mixing stage, with moist loose fibers. be preserved.
  • the fibers can have a particle size of less than 2000 ⁇ m.
  • Calcium oxide (CaO) can be added to the fibers to prevent them from sticking together. CaO is added when the dry paper is ground. CaO can also be added in a mixture with sodium silicate and the other agents mentioned above to prevent the fibers from clumping.
  • Additives can be added to the mixing water. Part of the mixing water can also be added to the light aggregate.
  • the moistened fibers can be mixed during transport to the forming belt. After placing it on the forming belt, the mat obtained can be pressed and degassed immediately. Subsequently, further water can be applied to the pressed mat in a rewetting stage. This - 9 -
  • Water can contain a setting accelerator.
  • the gypsum sets and most of the hydration takes place essentially within a few minutes while the mat is pressed continuously.
  • the gypsum fibreboard dries and then the board is sawn to the desired size.
  • a joint filler according to the invention is produced on the basis of the following recipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Building Environments (AREA)
  • Sealing Material Composition (AREA)
  • Ceramic Products (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Road Paving Structures (AREA)

Abstract

L'invention concerne une plaque de staff dont au moins un bord est chanfreiné de telle façon qu'il présente un segment perpendiculaire à la surface de la plaque. La hauteur de ce segment, comprise entre 5 et 50 % de l'épaisseur de la plaque, est égale à au moins 1 mm, et la largeur des fibres est au moins égale à 3 mm. Un mastic de jointoiement sec adapté à cette plaque de staff contient, respectivement par rapport au poids du mélange, 70 à 98 % en poids de fleur de plâtre dont la taille des particules est < 300 νm, 0,02 à 0, 5 % en poids d'épaississeur; 0,2 à 1 % en poids d'un agent de rétention de l'eau; 0, 5 à 3 % en poids d'alcool de polyvinyle et 0,001 à 0,1 % en poids d'acide borique ou d'un sel alcalino-terreux ou alcalin de l'acide borique ainsi que les additifs usuels.
PCT/EP1999/001669 1998-03-17 1999-03-13 Systeme de plaques de staff et mastic de jointoiement approprie WO1999047469A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU30349/99A AU3034999A (en) 1998-03-17 1999-03-13 Staff plate system and appropriate joint filler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98104738.4 1998-03-17
EP98104738A EP0943589B1 (fr) 1998-03-17 1998-03-17 Procédé d'installation de planches en plâtre renforcées par fibres utilisant une pâte pour joints y adaptée

Publications (1)

Publication Number Publication Date
WO1999047469A1 true WO1999047469A1 (fr) 1999-09-23

Family

ID=8231597

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/001669 WO1999047469A1 (fr) 1998-03-17 1999-03-13 Systeme de plaques de staff et mastic de jointoiement approprie

Country Status (5)

Country Link
EP (1) EP0943589B1 (fr)
AT (1) ATE248786T1 (fr)
AU (1) AU3034999A (fr)
DE (2) DE59809485D1 (fr)
WO (1) WO1999047469A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2990454B1 (fr) * 2012-05-11 2014-04-25 Luca Joel De Plaque de platre a profil autorisant une mise en oeuvre rapide sans defaut de planeite de l'appareillage
US11668091B2 (en) 2018-12-03 2023-06-06 Awi Licensing Llc Acoustical building panel, monolithic surface covering system incorporating an acoustical building panel, and methods of forming and installing the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935049A (en) * 1974-07-15 1976-01-27 Ashland Oil, Inc. Method of covering a substrate by overidge bonding of a covering material about the edges of the substrate
EP0094507A2 (fr) * 1982-05-15 1983-11-23 Gebr. Knauf Westdeutsche Gipswerke Mur de panneaux contenant un joint bouché
EP0227876A1 (fr) * 1985-11-29 1987-07-08 Rigips GmbH Disposition d'assemblage bord à bord, et composition de jointoiement étalable à la spatule dans la fente ainsi constituée
EP0303071A1 (fr) * 1987-08-08 1989-02-15 Rigips GmbH Masse de remplissage pour joints
EP0458328A1 (fr) * 1990-05-25 1991-11-27 Hoechst Aktiengesellschaft Système épaississant pour mélanges aqueux de matÀ©riaux de construction
DE4331141A1 (de) * 1993-09-14 1995-03-16 Rigips Gmbh Fugenfüller

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935049A (en) * 1974-07-15 1976-01-27 Ashland Oil, Inc. Method of covering a substrate by overidge bonding of a covering material about the edges of the substrate
EP0094507A2 (fr) * 1982-05-15 1983-11-23 Gebr. Knauf Westdeutsche Gipswerke Mur de panneaux contenant un joint bouché
EP0227876A1 (fr) * 1985-11-29 1987-07-08 Rigips GmbH Disposition d'assemblage bord à bord, et composition de jointoiement étalable à la spatule dans la fente ainsi constituée
EP0303071A1 (fr) * 1987-08-08 1989-02-15 Rigips GmbH Masse de remplissage pour joints
EP0458328A1 (fr) * 1990-05-25 1991-11-27 Hoechst Aktiengesellschaft Système épaississant pour mélanges aqueux de matÀ©riaux de construction
DE4331141A1 (de) * 1993-09-14 1995-03-16 Rigips Gmbh Fugenfüller

Also Published As

Publication number Publication date
EP0943589A1 (fr) 1999-09-22
EP0943589B1 (fr) 2003-09-03
ATE248786T1 (de) 2003-09-15
DE59809485D1 (de) 2003-10-09
DE29821942U1 (de) 1999-02-18
AU3034999A (en) 1999-10-11

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