EP0426575B1 - Mittel zur Herstellung eines Putzes und mit diesem Putz hergestellter isolierender Aussenverputz - Google Patents

Mittel zur Herstellung eines Putzes und mit diesem Putz hergestellter isolierender Aussenverputz Download PDF

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Publication number
EP0426575B1
EP0426575B1 EP19900403112 EP90403112A EP0426575B1 EP 0426575 B1 EP0426575 B1 EP 0426575B1 EP 19900403112 EP19900403112 EP 19900403112 EP 90403112 A EP90403112 A EP 90403112A EP 0426575 B1 EP0426575 B1 EP 0426575B1
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Prior art keywords
component
agent
coat
cement
coating
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Expired - Lifetime
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EP19900403112
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English (en)
French (fr)
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EP0426575A1 (de
Inventor
François Bonnet
Philippe Debeaupuis
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Prolifix SA
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Prolifix SA
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762—Exterior insulation of exterior walls

Definitions

  • the subject of the invention is a product for the preparation of a cement coating intended to cover the external face of a support such as a building wall and which can be used, in particular for the production of an insulation coating. from the outside.
  • the insulating wall usually consists of expanded polystyrene (PS E) or glass wool or rock wool panels and can be fixed to the support either by gluing, or by various devices of the staple type or pulling in plastic or metallic material.
  • PS E expanded polystyrene
  • glass wool or rock wool panels can be fixed to the support either by gluing, or by various devices of the staple type or pulling in plastic or metallic material.
  • the base layer consists of a coating in which a mesh-shaped reinforcement, generally made of fiberglass, is coated.
  • a mesh-shaped reinforcement generally made of fiberglass
  • the coating is applied in at least two passes, respectively a first pass for producing a relatively thin bonding layer spread over the external face of the insulating wall and on which the trellis is laid, the latter being then covered with a second thicker layer constituting the body of the coating.
  • the assembly is covered with a finishing coating itself consisting of at least one primary layer for the protection of the base layer and which is covered, most often, by a decorative layer.
  • an adhesive generally consisting of a paste composed of mineral fillers and additives associated with a resin and which is mixed with a certain proportion of cement.
  • the base layer also called undercoat, is intended for the coating and bonding of the reinforcement on the insulation. As this layer is applied to the insulation and exposed to the sun and cold, it must have a certain flexibility to resist differential expansions and that is why we generally incorporate a certain amount of resin into the coating. same product as for glue, by varying the cement dosages.
  • the paste contains a fine-grained mineral filler.
  • a primer before applying the topcoat.
  • the latter is generally in the form of a thick, grainy paste consisting of a mixture of mineral fillers and, optionally, colored pigments, in an organic binder.
  • the differential expansion is absorbed thanks to the flexibility of the reinforced base layer.
  • the three coatings are of different compositions, which can cause different tensions and a risk of cracking and delamination.
  • the bonding adhesive and the various coatings must be prepared separately at the time of their application and, before applying a layer, it is necessary to wait for the drying of the previous layer, which requires a time. quite long, varying according to atmospheric conditions, and which can go up to 48 hours.
  • Such a mortar contains a filler, a hydraulic binder, cellulose and a synthetic material, in particular a resin, resistant to alkaline products to obtain a water barrier effect. It is preferable to use a resin with a highly branched chain and therefore having a relatively glass transition temperature. high. Furthermore, the load must include a fairly large proportion of medium sand with a particle size of up to 5 mm and such a mortar therefore intended for the preparation of a fairly thick coating.
  • this mortar is prepared, as usual, by mixing dry products, then adding water for mixing.
  • this mortar is prepared, as usual, by mixing dry products, then adding water for mixing.
  • the subject of the invention is a new product for producing an insulating coating which does not have such drawbacks, and which, while retaining the advantages of known products, makes it possible to prepare a coating with high cohesive power and having, even in low thickness, very good qualities of resistance, impermeability, flexibility, adhesion to the support and external appearance.
  • the invention therefore relates to a thermal insulation coating intended to cover the outside face of a support and comprising, in cross section, from the inside to the outside, a wall of insulating material fixed on the outside face of the support and a coating plaster in which a lattice-like reinforcement is coated, said plaster consisting of a cement mortar containing, as main constituents, a filler consisting of a mixture of fine sand and medium sand, a hydraulic binder and a resin, said constituents being kept separately and mixed in desired proportions at the time of application
  • the coating is produced from two components stored separately, respectively, a first component comprising, in desired proportions the filler, the hydraulic binder and additives and a second component comprising the resin and additives, said resin being in aqueous dispersion and having a glass transition temperature close to 0 ° C, and the second component is mixed with the first component at the time of application in a proportion of at least 30% of the amount of cement contained in the first component.
  • an aqueous dispersion of vinyl copolymer is chosen in which the particle size is between 0.2 and 3 microns, and more preferably between 0.5 and 2 microns.
  • the setting time is relatively short.
  • the homogeneity of the coating is improved and, consequently, its cohesive power is higher.
  • vinyl copolymers copolymers of vinyl ester and of weakly branched ethylenic monomers are preferably used, and more preferably copolymers of vinyl acetate and ethylene.
  • a very important advantage of the invention lies in the fact that thin coatings are produced, generally between 3 and 7 mm, which have qualities superior to those of thick coatings without their drawbacks.
  • the coating according to the invention makes it possible to produce coatings having a traditional surface condition.
  • a minimum thickness of 3 mm of the coating according to the invention is sufficient to ensure the durability of the waterproofing.
  • the coating according to the invention has a capillary absorption significantly lower than that of a traditional coating coating.
  • the coating produced with the coating according to the invention exhibits good behavior when subjected to accelerated aging tests. In fact, no blistering, discoloration, cracking, water passage, detachment and significant chalking of the surface type were observed.
  • the invention also relates to the product as defined by claim 7 developed for the preparation of this coating and consisting of two components kept separately, for example: A first component consisting of a cement mortar having the following composition by weight: 15 to 30% white or gray cement, 40 to 50% of fine sand with a particle size of up to about 0.5 mm, and preferably between 0.08 and 0.4 mm, 25 to 45% and preferably 25 to 35% of an average sand with a particle size between 0.5 and 1.5 mm approximately, and further containing a rheology agent, a water repellency agent and a thixotropy agent, and a second component consisting of a vinyl copolymer in aqueous dispersion whose glass transition temperature is between 0 and 5 ° C., added with an anti-foaming agent and a preservative, the active proportion, by weight, of the second component being from 30 to 35% of the amount of cement contained in the first component, these two components being kept separately, the resin being mixed with the mortar, in desired
  • the resin in aqueous dispersion provides sufficient water for the dilution, no addition of water being normally required.
  • the insulating coating which is applied to the outer face 10 of a support 1 such as a building wall comprises an insulating wall 2 consisting, for example, of polystyrene panels placed side by side, of a base layer 3 in which is incorporated a reinforcement 4 and a finishing coating 5 produced in at least one layer.
  • the panels constituting the insulating wall 2 are fixed to the support 1 either by means of staples or dowels, or by gluing. In that case, as shown in the drawing, there are on the outer face 10 of the wall 1, strips of adhesive paste 6 spaced from one another and to which the insulating panels 2 are applied by crushing the paste 6.
  • the panels 2 are then covered with a first layer of plaster 31 on which the mesh 4 is applied, then the latter is covered with a second layer 32 so as to be completely coated, the second layer 32 is then covered with the same product, projected by a compressed air device, for example.
  • the mesh 4 is made, as usual, of fiberglass or kevlar with square meshes of 3 to 5 mm. As indicated above, to make the paste 6 and the base layer 3, the same coating consisting of two components mixed at the time of application, respectively a cement mortar and a resin.
  • the first component is a mortar preferably having the following composition: 15 to 30% and preferably 16 to 25% cement white or gray, 40 to 50% of fine sand with a particle size of up to about 0.5 mm and preferably between 80 and 400 microns, 25 to 45% and, preferably, 25 to 35% of an average sand with a particle size ranging from 0.5 to 1.5 mm, up to 0.3% and preferably between 0.08 and 0.25% of a rheology agent such as a cellulose derivative, up to 0.2% and preferably between 0.05 and 0.15% of a water repellant and a thixotropy agent, for example short fibers, in a proportion such that the weight ratio of this thixotropy agent to the active fraction of the second component is at most equal to 10% by weight.
  • a rheology agent such as a cellulose derivative
  • a thixotropy agent for example short fibers
  • the second component is a dilute resin with a low glass transition temperature combined with an anti-foaming agent and a preservative.
  • a vinyl copolymer is used, the glass transition temperature of which is between 0 ° C. and 5 ° C.
  • the two components are kept separately and mixed only at the time of application in proportions of 20 to 35% of resin relative to the amount of cement contained in the mortar, a proportion of 32% being particularly advantageous.
  • the amount of water contained in the second component is normally sufficient to adequately hydrate the hydraulic binder.
  • the presence of grains up to 1.5 mm secures the coating and the operation of the mesh inside the plaster and the presence a significant proportion, at least equal to 40%, of fine elements associated with a resin and with additives makes it possible to ensure the adhesion of the coating 3 to the insulating panels and to the mesh 4.
  • the presence of a significant proportion of medium sand gives the coating a sufficient compressive strength to quickly apply another layer.
  • the same coating can be used to make the finishing coating 5, the proportions of fine elements and resin providing the plaster with the necessary flexibility while the proportion of medium sand gives it a traditional-looking surface finish.
  • the thermoplastic nature of the coating is less marked than that of the plastic coatings usually used and is less likely to fix ambient dust.
  • the use, as resin, of a vinyl copolymer having a low glass transition temperature (between 0 and 5 ° C) and in particularly high proportions compared to the hydraulic binder (30 to 35% of the amount cement) allows, when this resin is combined with the solid component, to prepare a perfectly homogeneous paste which gives a coating with very high cohesive power.
  • the coating according to the invention could however be used as an adhesive product for bonding the insulation to the support.
  • the same components can be used to produce a single coating having all the qualities required to constitute the adhesive product 6, the base layer 3 and the finishing layer 5 .
  • the layers 3 and 5 are in fact made up of the same product and that it is not necessary to wait for the complete drying of the base layer before apply the finish coating. On the contrary, it is even advantageous not to wait too long to apply the finishing layer 5 so as to improve its adhesion.
  • the product according to the invention makes it possible to produce thin coatings, generally between 3 and 7 mm and which however have excellent qualities of resistance, waterproofness, flexibility, adhesion to the support and external appearance.
  • the coating prepared from the two components defined above can advantageously be used as a simple finishing coating applied directly to the outside face of a wall.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Building Environments (AREA)
  • Paints Or Removers (AREA)

Claims (12)

  1. Wärmedämmverkleidung, bestimmt zum Bedecken der Außenfläche eines Trägers (1) und umfassend, im Querschnitt von innen nach außen, eine auf der Außenfläche des Trägers (1) befestigte Schale (2) aus Isolationsmaterial und einen Verkleidungsputz (3, 5), in den eine Bewehrung (4) in Form eines Gitters eingebettet ist, wobei der Putz (3, 5) von einem Zementmörtel gebildet wird, der als Hauptbestandteile einen aus einer Mischung aus feinem Sand und mittelfeinem Sand gebildeten Zuschlagstoff, ein hydraulisches Bindemittel und ein Harz enthält, wobei die Bestandteile getrennt aufbewahrt und in gewünschten Verhältnissen im Augenblick der Anwendung gemischt sind, dadurch gekennzeichnet, daß der Putz im wesentlichen aus zwei getrennt aufbewahrten Komponenten hergestellt ist, jeweils einer ersten Komponente, die in gewünschten Verhältnissen den Zuschlagstoff, das hydraulische Bindemittel und Additive umfaßt, und einer zweiten Komponente, die das Harz und Additive umfaßt, daß das Harz in wässriger Dispersion vorliegt und eine Glasumwandlungstemperatur nahe 0°C besitzt, und daß die zweite Komponente der ersten Komponente im Augenblick der Anwendung in einem Verhältnis von mindestens 30% der in der ersten Komponente enthaltenen Zementmenge zugemischt ist.
  2. Dämmverkleidung nach Anspruch 1, bei der die Isolationsschale (2) mittels eines Klebers auf der Außenfläche des Trägers (1) befestigt ist, dadurch gekennzeichnet, daß der Befestigungskleber (6) der Isolationsschale (2) auf dieselbe Art hergestellt ist wie der Grundputz und der Deckputz, aus zwei selben Komponenten, die im Augenblick des Klebens gemischt sind.
  3. Dämmverkleidung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der aktive Gehalt der zweiten Komponente 30 bis 35 % der in der ersten Komponente enthaltenen Zementmenge beträgt.
  4. Dämmverkleidung nach einem der Ansprüche 1, 2 und 3, dadurch gekennzeichnet, daß die erste Komponente ein Mörtel ist, enthaltend bezogen auf das Gewicht:
       15 bis 30% weißen oder grauen Zement;
       40 bis 50% feinen Sand der Kornklassierung laufend bis ungefähr 0,5 mm
       25 bis 40% mittelfeinen Sand der Kornklassierung enthalten zwischen 0,5 und 1,5 mm ungefähr, und der Mörtel darüber hinaus ein Rheologiemittel, ein Wasserabweisungsmittel und ein Thixotropiemittel enthält.
  5. Dämmverkleidung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die zweite Komponente ein Vinylcopolymer ist, dessen Glasumwandungstemperatur zwischen 0°C und 5°C liegt, und ein Antischäumungsmittel und ein Konservierungsmittel zugesetzt sind.
  6. Dämmverkleidung nach Anspruch 3, dadurch gekennzeichnet, daß die erste Komponente die Zusammensetzung, nachfolgend bezogen auf das Gewicht, besitzt:
       16 bis 25% weißen oder grauen Zement
       40 bis 49% feinen Sand der Kornklassierung laufend von 0 bis 400 Mikron und vorzugsweise von 80 bis 400 Mikron
       25 bis 35% mittelfeinen Sand der Kornklassierung laufend von 0,5 bis 1,5 mm
       0,08 bis 0,25% an einem Rheologiemittel, vorzugsweise ein Zellulosederivat,
       0,05 bis 0,15% an einem Wasserabweisungsmittel,
       und ein Thixotropiemittel.
  7. Erzeugnis für die Herstellung eines Zementputzes, der zwei getrennt aufbewahrte Komponenten enthält, dadurch gekennzeichnet, daß jeweils eine erste Komponente gebildet wird von einem Zementmörtel, der 40 bis 50% feinen Sand und 25 bis 45% mittelfeinen Sand enthält, und eine zweite Komponente gebildet wird von einem durch die Zugabe eines Antischäumers und eines Konservierers verdünnten Harz, und die zwei Komponenten in gewünschten Verhältnissen gemischt sind ausschließlich im Augenblick des Gebrauchs für die Herstellung des Putzes.
  8. Erzeugnis für die Herstellung eines Putzes nach Anspruch 7, dadurch gekennzeichnet, daß der aktive Gehalt der zweiten Komponente 30 bis 35% der in der ersten Komponente enthaltenen Zementmenge beträgt.
  9. Erzeugnis zur Herstellung eines Putzes nach einem der Ansprüche 7 und 8, dadurch gekennzeichnet, daß die erste Komponente ein Mörtel ist, enthaltend bezogen auf das Gewicht:
       15 bis 30% weißen oder grauen Zement;
       40 bis 50% feinen Sand der Kornklassierung laufend bis ungefähr 0,5 mm,
       25 bis 40% mittelfeinen Sand der Kornklassierung enthalten zwischen 0,5 und 1,5 mm ungefähr,
    und der Mörtel darüber hinaus ein Rheologiemittel, ein Wasserabweisungsmittel und ein Thixotropiemittel enthält.
  10. Erzeugnis für die Herstellung eines Putzes nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß die zweite Komponente ein Vinylcopolymer ist, dessen Glasumwandlungstemperatur zwischen 0°C und 5°C liegt, und ein Antischäumungsmittel und ein Konservierungsmittel zugesetzt sind.
  11. Erzeugnis für die Herstellung eines Putzes nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß die erste Komponente die Zusammensetzung, nachfolgend bezogen auf das Gewicht, besitzt:
       16 bis 25% weißen oder grauen Zement
       40 bis 49% feinen Sand der Kornklassierung laufend von 0 bis 400 Mikron und vorzugsweise von 80 bis 400 Mikron,
       25 bis 35% mittelfeinen Sand der Kornklassierung laufend von 0,5 bis 1,5 mm
       0,08 bis 0,25% an einem Rheologiemittel, vorzugsweise ein Zellulosederivat,
       0,05 bis 0,15% an einem Wasserabweisungsmittel.
  12. Erzeugnis für die Herstellung eines Putzes nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, daß die erste Komponente ein Thixotropiemittel, so wie Kurzfasern, enthält in einem Verhältnis so wie das Gewichtsverhältnis dieses Mittels zu der aktiven Fraktion der zweiten Komponente, nämlich höchstens gleich 10% bezogen auf das Gewicht.
EP19900403112 1989-11-03 1990-11-02 Mittel zur Herstellung eines Putzes und mit diesem Putz hergestellter isolierender Aussenverputz Expired - Lifetime EP0426575B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914455A FR2654130B1 (fr) 1989-11-03 1989-11-03 Produit pour la preparation d'un enduit, et revetement d'isolation par l'exterieur realise grace a un tel enduit.
FR8914455 1989-11-03

Publications (2)

Publication Number Publication Date
EP0426575A1 EP0426575A1 (de) 1991-05-08
EP0426575B1 true EP0426575B1 (de) 1993-02-24

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EP19900403112 Expired - Lifetime EP0426575B1 (de) 1989-11-03 1990-11-02 Mittel zur Herstellung eines Putzes und mit diesem Putz hergestellter isolierender Aussenverputz

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Country Link
EP (1) EP0426575B1 (de)
DE (1) DE69000969T2 (de)
ES (1) ES2038500T3 (de)
FR (1) FR2654130B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704715C3 (de) * 1997-02-07 2003-02-27 Maxit Baustoff Und Kalkwerk Ma Wärmedämmplatte aus Kunstschaumstoff sowie Verfahren zum Verlegen und Befestigen von Wärmedämmplatten
FR2894605B1 (fr) * 2005-12-09 2008-02-01 Michel Pia Systeme d'isolation thermique des facades de batiments a base de panneaux composites rigides
DE102010010748B4 (de) 2010-03-09 2012-12-27 Xella Technologie- Und Forschungsgesellschaft Mbh Außenwandsystem eines Gebäudes
ES2415775B1 (es) * 2012-01-23 2014-05-14 Teais S.A. Sistema de aislamiento térmico y revestimiento mineralo-plástico por el exterior de muros de edificación
DE102012101931A1 (de) * 2012-03-07 2013-09-12 Saint-Gobain Isover G+H Ag Fassadendämmsystem, Verfahren zur Herstellung eines Fassadendämmsystems sowie hiermit versehenes Gebäude oder Bauelement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2224874A1 (de) * 1972-05-20 1973-12-13 Bosch & Wuestenrot Strukturbau Vorfabriziertes mehrschichtiges bauelement und verfahren zu seiner herstellung
DE2703342B2 (de) * 1977-01-27 1979-05-03 Vereinigte Steinwerke Gmbh, 4300 Essen Mörtel zur Beschichtung von Wärmedämmplatten
FR2511016A1 (fr) * 1981-08-10 1983-02-11 Rhone Poulenc Spec Chim Latex de copolymeres acetate de vinyle-olefine et procede de preparation
FR2520406A1 (fr) * 1982-01-22 1983-07-29 Gachot Jean Revetement thermiquement isolant applique sur les murs de batiments et son procede d'utilisation

Also Published As

Publication number Publication date
FR2654130B1 (fr) 1995-05-05
FR2654130A1 (fr) 1991-05-10
ES2038500T3 (es) 1993-07-16
EP0426575A1 (de) 1991-05-08
DE69000969D1 (de) 1993-04-01
DE69000969T2 (de) 1993-09-02

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