EP3837403B1 - Coating system on building facades - Google Patents
Coating system on building facades Download PDFInfo
- Publication number
- EP3837403B1 EP3837403B1 EP19752093.5A EP19752093A EP3837403B1 EP 3837403 B1 EP3837403 B1 EP 3837403B1 EP 19752093 A EP19752093 A EP 19752093A EP 3837403 B1 EP3837403 B1 EP 3837403B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow bodies
- reinforcement
- tubular
- substrate
- mat
- 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.)
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- 239000011248 coating agent Substances 0.000 title claims description 35
- 238000000576 coating method Methods 0.000 title claims description 35
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000004697 Polyetherimide Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920001601 polyetherimide Polymers 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 claims 1
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 description 87
- 239000004744 fabric Substances 0.000 description 62
- 125000006850 spacer group Chemical group 0.000 description 21
- 239000004570 mortar (masonry) Substances 0.000 description 19
- 239000011505 plaster Substances 0.000 description 14
- 238000010276 construction Methods 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 241001295925 Gegenes Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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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
-
- 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
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
- E04F13/04—Bases for plaster
- E04F13/045—Means for fastening plaster-bases to a supporting structure
-
- 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
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
- E04F13/04—Bases for plaster
- E04F13/047—Plaster carrying meshes
Definitions
- the invention relates to a coating system on building facades, in particular a thermal insulation composite system, with the features of claim 1, and a method for producing such a coating system with the features of claim 4.
- Reinforcement fabrics have been known from the prior art for a long time. They are used to reinforce wall plaster or thermal insulation systems on building facades and are intended, among other things, to prevent the formation of cracks. This happens because the reinforcement fabric embedded in the plaster absorbs the stresses that occur in the plaster. In this context, it has also been known for a long time that the risk of cracking is lowest when the reinforcement fabric is in the outer third of the plaster layer. In a similar way, the thermal insulation systems known from the prior art on building facades also have such a pronounced reinforcement layer, in which a reinforcement fabric is inserted into a so-called "base coat", which consists of a viscous adhesive and reinforcement mortar. This can be either mineral-bound or synthetic resin-bound reinforcing mortar.
- the DE 39 26 366 A1 such a reinforcement fabric with spacers.
- the spacers are formed by rod-shaped profiles that are fixed parallel to each other on one side of a lattice-like reinforcement fabric by gluing or by means of galvanized clips.
- a reinforcing fabric is extremely bulky to handle and can be pressed into the base coat only with great difficulty or not at all, particularly in the case of a base coat of rather tough consistency.
- cavities form in the areas where the rod-shaped profiles contact the reinforcement grid, which are not filled by the mortar of the base coat.
- such a rigid reinforcement construction cannot adapt to uneven subsoil; ie in most cases it does not lie flat on the substrate.
- a reinforcement fabric with a lattice structure formed from fibers or fiber bundles is known, these fibers being formed in the form of nubs, knots or loops by means of reinforced warp and weft threads and thus forming spacers consisting of the fiber material of the reinforcement fabric.
- spacers have proven to be too soft in operational practice, which means that there is a risk that they will become damaged during the work steps following the insertion of the reinforcement fabric into the first, inner layer of the base coat, in particular when introducing and smoothing out the second layer covering the reinforcement fabric.
- a further problem in the production of generic coating systems on building facades is that the corners of a window opening formed by window reveals and sill areas act as quasi predetermined breaking points and promote notch cracks in the reinforcement layer.
- installing such diagonal fabrics is very labor intensive.
- the object of the present invention is therefore to provide a coating system for building facades, in particular a thermal insulation composite system, comprising a reinforcement fabric for laying in a viscous coating compound applied as a reinforcement layer to a substrate belonging to the building facade, with the coating system having an additional layer laid in the reinforcement layer and pressed against the entire surface Subsoil of the building facade fitting tube mat, wherein the tube mat is made up of a plurality of firmly interconnected hollow bodies, each with a tubular structure, and the reinforcing fabric covers the tube mat on its side facing away from the ground, which poses a lower risk of Has cracks in the reinforcement layer and is also lighter and easier to produce.
- the hollow bodies of the tube mat are designed as hollow cylinders with a tubular shape, the individual hollow bodies being inseparably connected to one another approximately linearly along their outer surface and being open on both distal end faces.
- a tubular structure is to be understood as meaning any type of tubular shape of the hollow body, with its cross section being able to be round, oval or polygonal, in particular hexagonal or honeycomb-shaped.
- the individual hollow bodies are inseparably connected to each other along their outer surface in an approximately linear manner (e.g. by gluing or melting).
- the cross-sectional shape of such a hollow cylinder has a particularly high moment of inertia against buckling under load, both in relation to longitudinal forces and in relation to shearing forces in the transverse direction, and thus offers the building tradesman the best usage properties when handling and laying the tube mat or when they are incorporated into the reinforcement layer of a coating system according to the invention.
- the high moment of inertia of this cross-sectional shape enables the hollow cylinder to have a thin-walled structure.
- the hollow bodies are open on both distal end faces.
- the longitudinal axes of the hollow bodies of the tube mat are aligned approximately perpendicularly or at right angles to the surface of the substrate or plaster base.
- the viscous coating mass of the reinforcement layer can enter each hollow body almost unhindered, penetrate it completely and also completely cover the outlet side opposite the inlet side.
- the thin-walled structure of the hollow cylinders reduces the resistance that the coating mass applied to the base of the building facade opposes to the hollow cylinders or the tube mat and thus facilitates their penetration into the coating mass or the reinforcing mortar.
- the cutting resistance of the wall structures of the tube mat is significantly reduced due to the low wall thickness, which makes it easier to process under construction site conditions - especially when cutting tube mats to size to take account of structural Boundary conditions at the installation site - significantly improved.
- such an expression of the cross-sectional shape is the most cost-effective to produce.
- the tube mat can thus be fully embedded in the reinforcement layer of the coating system, so that a structured layer for receiving and embedding the reinforcement fabric can be worked out on its outer surface in relation to the substrate of the building facades using a notched trowel.
- the coating mass that has passed through the tubular structures of the hollow bodies forms, in the hardened state, just such a tubular structure for supporting the overlying or outer regions of the reinforcement layer into which the reinforcement fabric is inserted.
- Such an additional tube mat inserted into the reinforcement layer of a coating system for building facades has only a low specific weight per unit area, but significantly improves the mechanical strength, in particular the impact strength and resistance, of the coating system to external forces.
- the resistance of a building facade to hailstorms can also be significantly improved by means of a coating system according to the invention.
- the tube mat inserted according to the invention reliably prevents the reinforcement fabric from being immersed too deeply or falling below the limit value specified as the minimum distance between the subsurface and the reinforcement fabric in terms of structural engineering. Even if the builder exerts too much contact pressure during laying, the reinforcement fabric can under no circumstances be pressed deeper into the reinforcement layer than the limit dimension specified by the length of the hollow body of the tube mat.
- the isotropic mechanical properties of the tube mat in particular the high rigidity of the interconnected hollow bodies against mechanical compressive or buckling forces acting from the outside in the direction of their longitudinal axis, prevent the reinforcement layer from being pressed in or through in the direction of the substrate of the building facade.
- the tube mat enables significantly improved absorption of stresses in the reinforcement layer and thus also eliminates the need to install additional diagonal mesh in the corner areas of window openings.
- the installation of a tube mat in the corner area of a window opening according to the so-called "turret cut” is provided; ie the one in the corner area Tubus mats to be laid in the window opening do not form any horizontal or vertical joints as extensions of the window reveals and sill surfaces.
- the invention enables the diagonal mesh to be attached to the outermost layer of the reinforcement mesh and thus in the most favorable position for crack prevention in the structure of the layer structure of a coating system on building facades.
- the tube mat thus forms an independent component within a coating system according to the invention.
- the tube mat is very easy for the building tradesman to handle and to install in a coating system on building facades.
- An additional work step in the form of inserting the tube mat into the viscous coating mass previously applied to the substrate of the building facade is required.
- this supposed additional effort is overcompensated by the fact that the reinforcement fabric can be installed more easily and with better quality.
- the tube mats are laid "end to end" in a particularly simple manner, while the individual strips of the reinforcing fabric are laid in the subsequent step laid in an overlapping manner in a manner known and accustomed to the craftsman from the prior art and pressed against the tube mat.
- This guarantees a work result that is always qualitatively reproducible and independent of the individual skills of the craftsman doing the work.
- the tube mat enables sufficient load transfer, even if adjacent strips of the reinforcement fabric are laid with a smaller overlap of approx. 10 cm than is actually intended for this purpose. This significantly reduces the risk of cracks forming in the reinforcement layer and in the finishing plaster.
- the invention represents a departure from the prior art, in which attempts have always been made to attach spacer elements of all kinds to the reinforcement fabric and then to lay this more or less complex structure as an integral component in a single work step. While reinforcement fabrics with rather weak spacers have proven to be largely ineffective, reinforcement fabrics with more pronounced spacers are expensive to produce, difficult or impossible to transport in roll form and very awkward to handle when inserted into the reinforcement layer.
- the present invention overcomes this dilemma in that the spacing function is performed by an independent component in the form of a tube mat within the coating system, which—as shown above—is made up of a large number of hollow bodies, each with a tubular structure, that are firmly connected to one another.
- the spacer mat can be dimensioned and designed in terms of material in such a way that the spacer mat is sufficiently pressure-resistant so that it is not kinked or deformed by subsequent work processes, but at the same time flexible enough to be easy to handle and transport even under construction site conditions.
- the tube mat can be brought into almost any shape, especially in the form of a roll, without being permanently deformed by buckling or tearing.
- the length of the hollow bodies can be designed in different gradations during their production, so that tube mats of different thicknesses or thicknesses can be realized.
- coating systems according to the invention with different base plaster thicknesses can be realized in a simple manner.
- hollow bodies of different lengths and/or with different cross-sectional shapes can be designed in colorings that differ from one another. This simplifies the manual handling of the construction worker with tube mats of different thicknesses and significantly reduces the error rate, even under construction site conditions.
- the invention provides that the diameter of the hollow body of the tube mat is larger than the mesh size of the reinforcement fabric.
- these diameters should not exceed a certain upper limit so that the supporting effect of the tube mat on the reinforcement fabric is not lost. If this upper limit is exceeded, there is a risk that the reinforcement fabric during the final smoothing of the reinforcing mortar in the area of these round gaps due to a lack of sufficient support from the tube mat, depressions are formed, which is undesirable.
- the exact limit of the diameter of the hollow body thus depends essentially on the stability or elasticity of the reinforcement fabric, which in turn is influenced by the characteristics of its lattice structure and the material and geometry of its fabric strands.
- the hollow bodies of the tube mat are produced from a thermoplastic material, in particular polypropylene, polyetherimide or polycarbonate, by means of an extrusion process.
- a thermoplastic material in particular polypropylene, polyetherimide or polycarbonate
- spacers can be produced in a particularly cost-effective manner.
- the individual hollow bodies are fused to one another at their outer circumferences after they have been produced by means of local line-shaped introduction of heat.
- figure 2 shows a thermal insulation composite system according to the invention on a building facade, the subsurface of the building facade being made up of masonry (6) and a plaster base in the form of facade insulation panels (5).
- a tube mat (4) made up of a plurality of hollow cylinders (41) rests on the surface of the insulating boards (5) oriented outwards, ie away from the masonry (6). More details on the structural design of the tube mat (4) are in figure 1 shown.
- Their hollow cylinders (41) each have identical lengths and are aligned parallel to one another in strips or lines along their outer surface in a materially bonded manner, for example by supplying heat and melting their surfaces.
- the tube mat (4) is completely embedded in the viscous coating compound of the reinforcement layer (2) or the reinforcement mortar, with the interiors of the individual hollow cylinders being completely filled with the reinforcement mortar and on the side remote from the substrate (ie the outer side) of this completely covered are what's in figure 2 is visualized by the dotted representation of the reinforcing mortar.
- a conventional reinforcement fabric (1) known from the prior art is also inserted into the reinforcement layer (2).
- the diameter of the hollow cylinder of the tube mat (4) is larger than the mesh size of the reinforcement fabric (1). However, these diameters must not exceed a certain upper limit so that the supporting effect of the tube mat on the reinforcement fabric is not lost.
- the facade insulation panels (5) are attached to the masonry (6) of the facade of a building (e.g. by gluing and possibly additional dowelling).
- the outer surface then forms the substrate, onto which the reinforcing mortar is then applied in a further step using a notched trowel and distributed as evenly as possible by what is known as "combing through".
- the tube mat (4) is pressed into the reinforcing mortar until it is in contact with the insulating board (5).
- the reinforcement fabric is placed so that it lies flat on the tube mat (4), ie forms a flat contact with it.
- the reinforcing mortar is smoothed off, i.e.
- the executing builder can adjust the thickness of the layer of reinforcing mortar covering the reinforcing fabric in such a way that the total layer thickness of the the reinforcement layer used as the work result is in such a ratio to the first layer thickness specified by the tube mat (4) that the above-mentioned "rule of thirds" is observed; ie the ratio of these two layer thicknesses is approximately 3:2.
- the finishing plaster (3) is applied as the final layer.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
Description
Die Erfindung betrifft ein Beschichtungssystem an Gebäudefassaden, insbesondere Wärmedämmverbundsystem, mit den Merkmalen von Anspruch 1, sowie ein Verfahren zur Herstellung eines solchen Beschichtungssystems mit den Merkmalen von Anspruch 4.The invention relates to a coating system on building facades, in particular a thermal insulation composite system, with the features of
Armierungsgewebe sind aus dem Stand der Technik seit langem bekannt. Sie dienen zum Bewehren von Mauerputzen oder Wärmedämmsystemen an Gebäudefassaden und sollen unter anderem die Bildung von Rissen verhindern. Dies geschieht dadurch, dass das im Putz eingebettete Armierungsgewebe die im Putz auftretenden Spannungen aufnimmt. Es ist in diesem Zusammenhang ebenfalls seit langem bekannt, dass die Gefahr einer Rissbildung am geringsten ist, wenn sich das Armierungsgewebe im äußeren Drittel der Putzschicht befindet. In hierzu analoger Weise weisen auch die aus dem Stand der Technik bekannten Wärmedämmsysteme an Gebäudefassaden eine solchermaßen ausgeprägte Armierungsschicht auf, bei denen ein Armierungsgewebe in einen sogenannten "Unterputz" eingelegt wird, welcher aus einem viskosen Klebe- und Armierungsmörtel besteht. Es kann sich hierbei sowohl um mineralisch gebundenen als auch um mittels Kunstharz gebundenen Armierungsmörtel handeln. Es hängt dabei überwiegend vom Geschick des ausführenden Bauhandwerkers ab, ob die solchermaßen hergestellte Armierungsschicht im Endzustand die erforderliche Mindestdicke aufweist, und insbesondere ob das in die Armierungsschicht eingelegte Armierungsgewebe den erforderlichen Mindestabstand gemäß der oben genannten "Drittel-Regel" in Bezug auf den Untergrund bzw. die Trägerplatte aufweist. Bei Unterschreiten dieses Mindestabstandes drohen Schäden durch Rissbildung in dem auf der Armierungsschicht aufgetragenen Oberputz.Reinforcement fabrics have been known from the prior art for a long time. They are used to reinforce wall plaster or thermal insulation systems on building facades and are intended, among other things, to prevent the formation of cracks. This happens because the reinforcement fabric embedded in the plaster absorbs the stresses that occur in the plaster. In this context, it has also been known for a long time that the risk of cracking is lowest when the reinforcement fabric is in the outer third of the plaster layer. In a similar way, the thermal insulation systems known from the prior art on building facades also have such a pronounced reinforcement layer, in which a reinforcement fabric is inserted into a so-called "base coat", which consists of a viscous adhesive and reinforcement mortar. This can be either mineral-bound or synthetic resin-bound reinforcing mortar. It largely depends on the skill of the building tradesman involved in the work as to whether the reinforcement layer produced in this way has the required minimum thickness in the final state, and in particular whether the reinforcement fabric laid into the reinforcement layer has the required minimum distance in accordance with the above-mentioned "rule of thirds" in relation to the substrate or . If this minimum distance is not reached, there is a risk of damage due to the formation of cracks in the finishing plaster applied to the reinforcement layer.
Aus dem Stand der Technik sind deshalb verschiedene Ansätze zur Einhaltung einer solchen Mindest-Schichtstärke bekannt. So ist es beispielsweise bekannt, dem für den Unterputz zu verwendenden Mörtel einen mineralischen Bestandteil mit einer definierten Korngröße beizumischen (sogenanntes "Stützkorn"). Dabei entspricht der Durchmesser des Stützkorns dem Maß der einzuhaltenden Mindest-Schichtdicke. Dieser Ansatz ist jedoch wenig praxistauglich, da im Hinblick auf die oben erwähnte "Drittel-Regel" zwei verschiedene Arten von Mörtel einzusetzen wären; nämlich für die erste bzw. innenliegende Unterputz-Schicht einen ersten Mörtel mit einem doppelt so großen Stützkorn wie für die zweite bzw. außenliegende Unterputz-Schicht. Dies ist wenig praktikabel. Erschwerend kommt hinzu, dass z.B. bei Wärmedämmverbundsystemen Unterputze zur Anwendung kommen, deren Schichtdicke ca. 6 mm beträgt, woraus für den oben genannten ersten Mörtel ein vergleichsweise riesiges Stützkorn von 4 mm benötigt würde. Ein solcher Mörtel wäre sehr schlecht zu verarbeiten.Various approaches to maintaining such a minimum layer thickness are therefore known from the prior art. For example, it is known to add a mineral component with a defined grain size (so-called "support grain") to the mortar to be used for the base coat. The diameter of the support grain corresponds to the minimum layer thickness to be maintained. This approach is not very practical, however, since two different types of mortar would have to be used in view of the "rule of thirds" mentioned above; namely, for the first or inner base plaster layer, a first mortar with a supporting grain twice as large as for the second or outer base plaster layer. This is not very practical. To make matters worse, e.g. in the case of thermal insulation composite systems, base coats are used with a layer thickness of approx. 6 mm, from which a comparatively huge supporting grain of 4 mm would be required for the first mortar mentioned above. Such a mortar would be very difficult to work with.
Es wurde deshalb in der Vergangenheit immer wieder versucht, das Armierungsgewebe vor dem Einlegen in den Unterputz mit Abstandshaltern zu verstärken, welche einen definierten Abstand des Armierungsgewebes vom Untergrund und somit die erforderliche Mindestdicke der Armierungsschicht gewährleisten sollen.In the past, therefore, repeated attempts have been made to reinforce the reinforcement fabric with spacers before laying it in the base coat, which are intended to ensure a defined distance between the reinforcement fabric and the substrate and thus the required minimum thickness of the reinforcement layer.
So offenbart beispielsweise die
Zur Vermeidung dieser Probleme sehen andere konzeptionelle Ansätze flexible schnurartige Abstandhalter vor, die ebenfalls auf das Armierungsgewebe aufgeklebt werden. Auf diese Weise sind Armierungsgewebe realisierbar, die leichter handzuhaben und beispielsweise in Rollenform transportierbar sind. So offenbart beispielsweise die
Aus
In hierzu ähnlicher Weise offenbart
Zudem besteht die Gefahr des Abfallens einzelner Distanzkörper vom Armierungsgewebe, beispielsweise durch Versprödung des Materials oder Klebstoffs. In dessen Folge liegt das Armierungsgewebe im Bereich fehlender Distanzkörper nicht eben auf dem Untergrund auf und es bilden sich Einsenkungen, die in nachfolgenden Arbeitsschritten manuell ausgeglichen werden müssen.There is also the risk of individual spacers falling off the reinforcement fabric, for example due to embrittlement of the material or adhesive. As a result, the reinforcement mesh in the area where the spacers are missing does not lie flat on the subsoil and depressions form, which have to be compensated for manually in subsequent work steps.
Beschichtungssysteme mit Distanzhaltern in Form von Noppen-Platten sind des Weiteren auch aus
Ein weiteres Problem bei der Herstellung gattungsgemäßer Beschichtungssysteme an Gebäudefassaden besteht darin, dass die durch Fensterlaibungen sowie Sohlbankflächen ausgebildeten Ecken einer Fensteröffnung als Quasi-Sollbruchstellen wirken und Kerbrissen in der Armierungsschicht Vorschub leisten. Zur Vermeidung derartiger Risse ist deshalb aus dem Stand der Technik das Einlegen zusätzlicher Diagonalgewebe im Bereich der Ecken der Fensteröffnungen bekannt, welche streifenförmig ausgebildet und zu etwa 45° gegenüber der Horizontalen bzw. Vertikalen geneigt sind und das Armierungsgewebe im Bereich der üblichen Rissverlaufsrichtungen durch eine weitere Gewebeschicht mit einer gegenüber dem Armierungsgewebe abweichenden Ausrichtung der Gewebefäden verstärken sollen. Das Einbauen solcher Diagonalgewebe ist jedoch sehr arbeitsintensiv. Zudem besteht die Gefahr, dass bei nicht sachgerechter Ausführung die Diagonalgewebe-Streifen nach Fertigstellung des Beschichtungssystems unter Streiflicht deutlich sichbar hervortreten. Dies kann - je nach Ausprägung des Mangels - aufwändige Nacharbeiten und Ausbesserungsarbeiten nach sich ziehen.A further problem in the production of generic coating systems on building facades is that the corners of a window opening formed by window reveals and sill areas act as quasi predetermined breaking points and promote notch cracks in the reinforcement layer. In order to avoid such cracks, it is therefore known from the prior art to insert additional diagonal fabrics in the area of the corners of the window openings, which are designed in strip form and are inclined at about 45° to the horizontal or vertical and replace the reinforcement fabric in the area of the usual directions of the cracks with another Fabric layer should reinforce with a relation to the reinforcement fabric different orientation of the fabric threads. However, installing such diagonal fabrics is very labor intensive. In addition, there is a risk that if the work is not carried out properly, the diagonal fabric strips will be clearly visible under glancing light after the coating system has been completed. Depending on the extent of the defect, this can entail costly reworking and repair work.
Die Aufgabe der vorliegenden Erfindung besteht somit darin, ein Beschichtungssystem an Gebäudefassaden, insbesondere Wärmedämmverbundsystem, umfassend ein Armierungsgewebe zum Einlegen in eine als Armierungsschicht auf einen der Gebäudefassade zugehörigen Untergrund aufgetragene viskose Beschichtungsmasse bereitzustellen, wobei das Beschichtungssystem eine zusätzliche in die Armierungsschicht eingelegte und vollflächig gegen den Untergrund der Gebäudefassade anliegende Tubus-Matte aufweist, wobei die Tubus-Matte aus einer Vielzahl fest miteinander verbundener Hohlkörper mit jeweils tubulärer Struktur aufgebaut ist, und wobei das Armierungsgewebe die Tubus-Matte auf deren vom Untergrund abgewandten Seite überdeckt, welche ein geringeres Risiko von Rissbildungen in der Armierungsschicht aufweist und darüber hinaus auch leichter und einfacher herzustellen ist.The object of the present invention is therefore to provide a coating system for building facades, in particular a thermal insulation composite system, comprising a reinforcement fabric for laying in a viscous coating compound applied as a reinforcement layer to a substrate belonging to the building facade, with the coating system having an additional layer laid in the reinforcement layer and pressed against the entire surface Subsoil of the building facade fitting tube mat, wherein the tube mat is made up of a plurality of firmly interconnected hollow bodies, each with a tubular structure, and the reinforcing fabric covers the tube mat on its side facing away from the ground, which poses a lower risk of Has cracks in the reinforcement layer and is also lighter and easier to produce.
Dies wird erfindungsgemäß in vorrichtungsorientierter Hinsicht dadurch erreicht, dass die Hohlkörper der Tubus-Matte als Hohlzylinder mit röhrchenförmiger Ausprägung ausgeführt sind, wobei die einzelnen Hohlkörper entlang ihrer außenliegenden Oberfläche in etwa linienförmig untrennbar miteinander verbunden und an beiden distalen Stirnseiten jeweils offen sind. Unter einer tubulären Struktur ist im Rahmen dieser Erfindung jegliche Art einer röhrchenförmigen Ausprägung des Hohlkörpers zu verstehen, wobei dessen Querschnitt rund, oval oder mehreckig, insbesondere sechseckig bzw. wabenförmig ausgeführt sein kann. Die einzelnen Hohlkörper sind entlang ihrer außenliegenden Oberfläche in etwa linienförmig untrennbar miteinander verbunden (z.B. durch Kleben oder Aufschmelzen). Die Querschnittsform eines solchen Hohlzylinders weist ein besonders hohes Trägheitsmoment gegen Einknicken unter Last auf, sowohl in Bezug auf Längskräfte als auch in Bezug auf Scherkräfte in Querrichtung, und bietet somit für den ausführenden Bauhandwerker die besten Gebrauchseigenschaften beim Handhaben und Verlegen der Tubus-Matte bzw. bei deren Einbau in die Armierungsschicht eines erfindungsgemäßen Beschichtungssystems. Das hohe Trägheitsmoment dieser Querschnittsform ermöglicht eine dünnwandige Struktur der Hohlzylinder.According to the invention, this is achieved from a device-oriented point of view in that the hollow bodies of the tube mat are designed as hollow cylinders with a tubular shape, the individual hollow bodies being inseparably connected to one another approximately linearly along their outer surface and being open on both distal end faces. In the context of this invention, a tubular structure is to be understood as meaning any type of tubular shape of the hollow body, with its cross section being able to be round, oval or polygonal, in particular hexagonal or honeycomb-shaped. The individual hollow bodies are inseparably connected to each other along their outer surface in an approximately linear manner (e.g. by gluing or melting). The cross-sectional shape of such a hollow cylinder has a particularly high moment of inertia against buckling under load, both in relation to longitudinal forces and in relation to shearing forces in the transverse direction, and thus offers the building tradesman the best usage properties when handling and laying the tube mat or when they are incorporated into the reinforcement layer of a coating system according to the invention. The high moment of inertia of this cross-sectional shape enables the hollow cylinder to have a thin-walled structure.
Die Hohlkörper sind an beiden distalen Stirnseiten offen. Im eingebauten Zustand der Tubus-Matte in ein erfindungsgemäßes Beschichtungssystem sind die Längsachsen der Hohlkörper der Tubus-Matte in etwa senkrecht bzw. rechtwinklig zur Oberfläche des Untergrunds bzw. Putzträgers ausgerichtet. Auf diese Weise kann die viskose Beschichtungsmasse der Armierungsschicht nahezu ungehindert in jeden Hohlkörper eintreten, diesen vollständig durchdringen und auch auf der zur Eintrittseite gegenüberliegenden Austritts-Seite vollständig überdecken. Mittels der dünnwandigen Struktur der Hohlzylinder wird der Widerstand reduziert, den die auf dem Untergrund der Gebäudefassade aufgebrachte Beschichtungsmasse den Hohlzylindern bzw. der Tubus-Matte entgegensetzt und erleichtert somit deren Eindringen in die Beschichtungsmasse bzw. den Armierungsmörtel. Des weiteren wird durch die geringe Wandstärke der Schneidwiderstand der Wandstrukturen der Tubus-Matte deutlich reduziert, was deren Verarbeitbarkeit unter Baustellen-Bedingungen - insbesondere beim Zuschneiden von Tubus-Matten zur Berücksichtung von baulichen Randbedingungen am Einbau-Ort - erheblich verbessert. Zugleich ist eine solche Ausprägung der Querschnittsform am kostengünstigsten herzustellen.The hollow bodies are open on both distal end faces. When the tube mat is installed in a coating system according to the invention, the longitudinal axes of the hollow bodies of the tube mat are aligned approximately perpendicularly or at right angles to the surface of the substrate or plaster base. In this way, the viscous coating mass of the reinforcement layer can enter each hollow body almost unhindered, penetrate it completely and also completely cover the outlet side opposite the inlet side. The thin-walled structure of the hollow cylinders reduces the resistance that the coating mass applied to the base of the building facade opposes to the hollow cylinders or the tube mat and thus facilitates their penetration into the coating mass or the reinforcing mortar. Furthermore, the cutting resistance of the wall structures of the tube mat is significantly reduced due to the low wall thickness, which makes it easier to process under construction site conditions - especially when cutting tube mats to size to take account of structural Boundary conditions at the installation site - significantly improved. At the same time, such an expression of the cross-sectional shape is the most cost-effective to produce.
Die Tubus-Matte ist somit vollständig in die Armierungsschicht des Beschichtungssystems einbettbar, so dass auf ihrer in Bezug auf den Untergrund der Gebäudefassaden außenliegenden Fläche mittels einer Zahnkelle eine strukturierte Schicht zur Aufnahme und Einbettung der Armierungsgewebes ausgearbeitet werden kann. Somit bildet die durch die tubulären Strukturen der Hohlkörper hindurchgetretene Beschichtungsmasse im ausgehärteten Zustand eine ebensolche tubuläre Struktur zur Stützung der darüberliegenden bzw. außenliegenden Bereiche der Armierungsschicht, in die das Armierungsgewebe eingelegt ist. Eine solche zusätzliche in die Armierungsschicht eines Beschichtungssystems für Gebäudefassaden eingelegte Tubus-Matte weist ein nur geringes spezifisches Flächengewicht auf, verbessert aber die mechanische Festigkeit, insbesondere die Schlagzähigkeit und Widerstandsfähigkeit, des Beschichtungssystems gegen von außen einwirkende Kräfte deutlich. Auf diese Weise lässt sich mittels eines erfindungsgemäßen Beschichtungssystems beispielsweise auch die Widerstandsfähigkeit einer Gebäudefassade gegen Hagelschlag deutlich verbessern. Insbesondere verhindert die erfindungsgemäß eingelegte Tubus-Matte zuverlässig ein zu tiefes Eintauchen des Armierungsgewebes bzw. ein Unterschreiten des bautechnisch als Mindestabstand zwischen Untergrund und Armierungsgewebe vorgegebenen Grenzwertes. Das Armierungsgewebe kann selbst bei Ausüben eines zu starken Anpressdrucks während des Verlegens durch den Bauhandwerker keinesfalls tiefer als das durch die Länge der Hohlkörper der Tubus-Matte vorgegebene Grenzmaß in die Armierungsschicht eingedrückt werden. Die isotropen mechanischen Eigenschaften der Tubus-Matte, insbesondere die hohe Steifigkeit der miteinander verbundenen Hohlkörper gegen von außen in Richtung von deren Längsachse angreifenden mechanischen Druck- bzw. Knickkräfte verhindern ein Ein- oder Durchdrücken der Armierungsschicht in Richtung auf den Untergrund der Gebäudefassade.The tube mat can thus be fully embedded in the reinforcement layer of the coating system, so that a structured layer for receiving and embedding the reinforcement fabric can be worked out on its outer surface in relation to the substrate of the building facades using a notched trowel. Thus, the coating mass that has passed through the tubular structures of the hollow bodies forms, in the hardened state, just such a tubular structure for supporting the overlying or outer regions of the reinforcement layer into which the reinforcement fabric is inserted. Such an additional tube mat inserted into the reinforcement layer of a coating system for building facades has only a low specific weight per unit area, but significantly improves the mechanical strength, in particular the impact strength and resistance, of the coating system to external forces. In this way, for example, the resistance of a building facade to hailstorms can also be significantly improved by means of a coating system according to the invention. In particular, the tube mat inserted according to the invention reliably prevents the reinforcement fabric from being immersed too deeply or falling below the limit value specified as the minimum distance between the subsurface and the reinforcement fabric in terms of structural engineering. Even if the builder exerts too much contact pressure during laying, the reinforcement fabric can under no circumstances be pressed deeper into the reinforcement layer than the limit dimension specified by the length of the hollow body of the tube mat. The isotropic mechanical properties of the tube mat, in particular the high rigidity of the interconnected hollow bodies against mechanical compressive or buckling forces acting from the outside in the direction of their longitudinal axis, prevent the reinforcement layer from being pressed in or through in the direction of the substrate of the building facade.
Insbesondere ermöglicht die Tubus-Matte eine deutlich verbesserte Aufnahme von Spannungen in der Armierungsschicht und damit auch den Verzicht auf das Einbauen zusätzlicher Diagonalgewebe in den Eckbereichen von Fensteröffnungen. Hierzu ist der Einbau einer Tubus-Matte im Eckbereich einer Fensteröffnung gemäß des sogenannten "Revolverschnitts" vorgesehen; d.h. die im Eckbereich einer Fensteröffnung zu verlegenden Tubus-Matten bilden keine waagrechten oder senkreten Fugen als Verlängerungen der Fensterlaibungen und Sohlbankflächen aus. Es ist ausreichend, im Bereich der Kanten von Fensteröffnungen sowohl die Tubus-Matte als auch das anschließend hierauf verlegte Armierungsgewebe jeweils bündig mit der Kante der Fensteröffnungen abzuschneiden sowie anschließend ein die Kanten von Tubus-Matte und Armierungsprofil umgreifendes Eckprofil bzw. Kantenprofil direkt auf diese zu setzen. Aber auch wenn auf Diagonalgewebe nicht gänzlich verzichtet werden soll, dann ermöglicht die Erfindung das Anbringen der Diagonalgewebe auf der äußersten Schicht des Armierungsgewebes und damit in dem für eine Rißverhinderung günstigsten Positionierung im Gefüge des Schichten-Aufbaus eines Beschichtungssystems an Gebäudefassaden.In particular, the tube mat enables significantly improved absorption of stresses in the reinforcement layer and thus also eliminates the need to install additional diagonal mesh in the corner areas of window openings. For this purpose, the installation of a tube mat in the corner area of a window opening according to the so-called "turret cut" is provided; ie the one in the corner area Tubus mats to be laid in the window opening do not form any horizontal or vertical joints as extensions of the window reveals and sill surfaces. In the area of the edges of the window openings, it is sufficient to cut both the tube mat and the reinforcement fabric laid on it flush with the edge of the window opening and then to cut a corner profile or edge profile directly towards the edges of the tube mat and the reinforcement profile set. But even if diagonal mesh is not to be completely dispensed with, the invention enables the diagonal mesh to be attached to the outermost layer of the reinforcement mesh and thus in the most favorable position for crack prevention in the structure of the layer structure of a coating system on building facades.
Die Tubus-Matte bildet somit ein eigenständiges Bauteil innerhalb eines erfindungsgemäßen Beschichtungssystems aus. Als ein solches eigenständiges Bauteil ist die Tubus-Matte für den ausführenden Bauhandwerker sehr leicht handzuhaben und in ein Beschichtungssystem an Gebäudefassaden einzubauen. Es ist zwar ein zusätzlicher Arbeitsschritt in Form des Einlegens der Tubus-Matte in die zuvor auf dem Untergrund der Gebäudefassade aufgebrachte viskose Beschichtungsmasse erforderlich. Allerdings wird dieser vermeintliche Mehr-Aufwand dadurch überkompensiert, dass das Armierungsgewebe umso leichter und qualitätsgerechter eingebaut werden kann.The tube mat thus forms an independent component within a coating system according to the invention. As such an independent component, the tube mat is very easy for the building tradesman to handle and to install in a coating system on building facades. An additional work step in the form of inserting the tube mat into the viscous coating mass previously applied to the substrate of the building facade is required. However, this supposed additional effort is overcompensated by the fact that the reinforcement fabric can be installed more easily and with better quality.
Im Gegensatz zum Stand der Technik werden keine erhöhten Anforderungen an das Geschick oder die Sorgfalt des ausführenden Bauhandwerkers gestellt: die Tubus-Matten werden in einem ersten Arbeitsschritt in besonders einfacher Weise "Stoß an Stoß" verlegt, während die einzelnen Bahnen des Armierungsgewebes im darauffolgenden Arbeitsschritt in einer für den Handwerker aus dem Stand der Technik bekannten und gewohnten Weise überlappend verlegt und dabei gegen die Tubus-Matte angepresst werden. Dies gewährleistet ein von den individuellen Fertigkeiten des ausführenden Handwerkers unabhängiges und qualitativ stets reproduzierbares Arbeitsergebnis. Insbesondere ermöglicht die Tubus-Matte eine ausreichende Lastabtragung, auch wenn benachbarte Bahnen des Armierungsgewebes mit einer geringeren als der hierfür eigentlich vorgesehenen Überlappung von ca. 10 cm verlegt werden. Hierdurch wird die Gefahr von Rissbildung in der Armierungsschicht und im Oberputz deutlich reduziert.In contrast to the prior art, there are no increased demands on the skill or care of the building craftsman involved: in a first step, the tube mats are laid "end to end" in a particularly simple manner, while the individual strips of the reinforcing fabric are laid in the subsequent step laid in an overlapping manner in a manner known and accustomed to the craftsman from the prior art and pressed against the tube mat. This guarantees a work result that is always qualitatively reproducible and independent of the individual skills of the craftsman doing the work. In particular, the tube mat enables sufficient load transfer, even if adjacent strips of the reinforcement fabric are laid with a smaller overlap of approx. 10 cm than is actually intended for this purpose. This significantly reduces the risk of cracks forming in the reinforcement layer and in the finishing plaster.
Die Erfindung stellt insbesondere eine Abkehr vom bisherigen Stand der Technik dar, bei dem stets versucht wurde, an das Armierungsgewebe Abstandshalter-Elemente unterschiedlichster Art anzubringen und dieses mehr oder weniger aufwändige Gebilde daran anschließend als integrales Bauteil in einem einzelnen Arbeitsschritt zu verlegen. Während sich Armierungsgewebe mit eher schwach ausgeprägten Abstandshaltern als weitgehend wirkungslos erwiesen haben, sind Armierungsgewebe mit stärker ausgeprägten Abstandshaltern teuer in der Herstellung, nur schlecht oder gar nicht in Rollenform transportierbar und beim Einlegen in die Armierungsschicht sehr umständlich handzuhaben. Dieses Dilemma überwindet die vorliegende Erfindung dadurch, dass die abstandshaltende Funktion durch ein eigenständiges Bauteil in Form einer Tubus-Matte innerhalb des Beschichtungssystems ausgeübt wird, welches - wie oben dargestellt - aus einer Vielzahl fest miteinander verbundener Hohlkörper mit jeweils tubulärer Struktur aufgebaut ist. Diese können derart dimensioniert und werkstofflich ausgelegt werden, dass die Abstandshalter-Matte hinreichend druckstabil ist, um nicht durch nachfolgende Arbeitsgänge geknickt oder verformt zu werden, aber gleichzeitig flexibel genug, um auch unter Baustellen-Bedingungen leicht handhabbar und transportabel zu sein. So kann die Tubus-Matte in nahzu jegliche Form gebracht werden, insbesondere in Rollenform, ohne hierbei durch Einknicken dauerhaft verformt zu werden oder einzureißen.In particular, the invention represents a departure from the prior art, in which attempts have always been made to attach spacer elements of all kinds to the reinforcement fabric and then to lay this more or less complex structure as an integral component in a single work step. While reinforcement fabrics with rather weak spacers have proven to be largely ineffective, reinforcement fabrics with more pronounced spacers are expensive to produce, difficult or impossible to transport in roll form and very awkward to handle when inserted into the reinforcement layer. The present invention overcomes this dilemma in that the spacing function is performed by an independent component in the form of a tube mat within the coating system, which—as shown above—is made up of a large number of hollow bodies, each with a tubular structure, that are firmly connected to one another. These can be dimensioned and designed in terms of material in such a way that the spacer mat is sufficiently pressure-resistant so that it is not kinked or deformed by subsequent work processes, but at the same time flexible enough to be easy to handle and transport even under construction site conditions. In this way, the tube mat can be brought into almost any shape, especially in the form of a roll, without being permanently deformed by buckling or tearing.
Die Länge der Hohlkörper kann bei deren Herstellung in verschiedenen Abstufungen ausgeführt werden, so dass unterschiedlich dicke bzw. starke Tubus-Matten realisierbar sind. Somit sind auf einfache Weise erfindungsgemäße Beschichtungssysteme mit unterschiedlichen Unterputzstärken realisierbar. In besonders vorteilhafter Weise können Hohlkörper unterschiedlicher Länge und / oder mit unterschiedlichen Querschnittsformen in voneinander abweichenden Einfärbungen ausgeführt sein. Dies erleichtert den manuellen Umgang des Bauhandwerkers mit unterschiedlich dicken Tubus-Matten und reduziert die Fehler-Quote auch unter Baustellen-Bedingungen deutlich.The length of the hollow bodies can be designed in different gradations during their production, so that tube mats of different thicknesses or thicknesses can be realized. Thus, coating systems according to the invention with different base plaster thicknesses can be realized in a simple manner. In a particularly advantageous manner, hollow bodies of different lengths and/or with different cross-sectional shapes can be designed in colorings that differ from one another. This simplifies the manual handling of the construction worker with tube mats of different thicknesses and significantly reduces the error rate, even under construction site conditions.
Ferner sieht die Erfindung vor, dass der Durchmesser der Hohlkörper der Tubus-Matte größer als die Maschenweite des Armierungsgewebes ist. Allerdings sollen diese Durchmesser eine bestimmte obere Grenze nicht überschreiten, damit die stützende Wirkung der Tubus-Matte auf das Armierungsgewebe nicht verloren geht. Bei Überschreiten dieser oberen Grenze besteht die Gefahr, dass das Armierungsgewebe beim abschließenden Abglätten des Armierungsmörtels im Bereich dieser runden Zwischenräume mangels hinreichender Stützung durch die Tubus-Matte Einsenkungen ausbildet, was unerwünscht ist. Das genaue Grenzmaß der Durchmesser der Hohlkörper hängt somit wesentlich von der Stabilität bzw. Elastizität des Armierungsgewebes ab, was wiederum durch die Ausprägung von dessen Gitterstruktur sowie Material und Geometrie von dessen Gewebestränge beeinflusst wird.Furthermore, the invention provides that the diameter of the hollow body of the tube mat is larger than the mesh size of the reinforcement fabric. However, these diameters should not exceed a certain upper limit so that the supporting effect of the tube mat on the reinforcement fabric is not lost. If this upper limit is exceeded, there is a risk that the reinforcement fabric during the final smoothing of the reinforcing mortar in the area of these round gaps due to a lack of sufficient support from the tube mat, depressions are formed, which is undesirable. The exact limit of the diameter of the hollow body thus depends essentially on the stability or elasticity of the reinforcement fabric, which in turn is influenced by the characteristics of its lattice structure and the material and geometry of its fabric strands.
Es ist dabei besonders vorteilhaft, wenn die Hohlkörper der Tubus-Matte mittels eines Exktrusionsverfahrens aus einem thermoplastischen Kunststoff, insbesondere Polypropylen, Polyetherimid oder Polycarbonat, hergestellt sind. Solche Abstandshalter sind in besonders kostengünstiger Weise herstellbar. In besonders vorteilhafter Weise werden die einzelnen Hohlkörper nach deren Herstellung mittels lokaler linienförmiger Wärmeinleitung an deren Außenumfängen miteinander verschmolzen.It is particularly advantageous if the hollow bodies of the tube mat are produced from a thermoplastic material, in particular polypropylene, polyetherimide or polycarbonate, by means of an extrusion process. Such spacers can be produced in a particularly cost-effective manner. In a particularly advantageous manner, the individual hollow bodies are fused to one another at their outer circumferences after they have been produced by means of local line-shaped introduction of heat.
Die Erfindung umfasst auch ein Verfahren zur Herstellung eines Beschichtungssystems an Gebäudefassaden, insbesondere eines Wärmedämmverbundsystems, umfassend die Arbeitsschritte:
- a. Auftragen einer viskosen Beschichtungsmasse als Armierungsschicht auf einen der Gebäudefassade zugehörigen Untergrund,
- b. Einlegen einer Tubus-Matte, bestehend aus einer Vielzahl fest miteinander verbundener Hohlkörper mit jeweils tubulärer Struktur, in die Armierungsschicht und Andrücken der Tubus-Matte gegen den Untergrund der Gebäudefassade, wobei die Hohlkörper der Tubus-Matte als Hohlzylinder mit röhrchenförmiger Ausprägung ausgeführt sind, wobei die einzelnen Hohlkörper entlang ihrer außenliegenden Oberfläche in etwa linienförmig untrennbar miteinander verbunden und an beiden distalen Stirnseiten jeweils offen sind,
- c. Einlegen eines Armierungsgewebes in die Armierungsschicht derart, dass das Armierungsgewebe die Tubus-Matte auf deren vom Untergrund abgewandten Seite überdeckt.
- a. Application of a viscous coating mass as a reinforcement layer on a substrate belonging to the building facade,
- b. Insertion of a tube mat, consisting of a large number of hollow bodies firmly connected to one another, each with a tubular structure, in the reinforcement layer and pressing the tube mat against the substrate of the building facade, the hollow bodies of the tube mat being designed as hollow cylinders with a tubular shape, with the individual hollow bodies are inseparably connected to each other along their outer surface in an approximately linear manner and are open on both distal end faces,
- c. Insertion of a reinforcement fabric into the reinforcement layer in such a way that the reinforcement fabric covers the tube mat on the side facing away from the substrate.
Die vorliegende Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und dazugehöriger Zeichnungen näher erläutert. Es zeigen:
- Figur 1:
- Detail-Darstellung einer Tubus-Matte
- Figur 2:
- Querschnitts-Darstellung eines erfindungsgemäßen Wärmedämmverbundsystems
- Figure 1:
- Detail representation of a tube mat
- Figure 2:
- Cross-sectional representation of a thermal insulation composite system according to the invention
- 11
- Armierungsgewebereinforcement mesh
- 22
- Armierungsschichtreinforcement layer
- 33
- Oberputzfinishing plaster
- 44
- Tubus-Mattetube mat
- 4141
- Hohlzylinderhollow cylinder
- 55
- Fassaden-DämmplatteFaçade insulating panel
- 66
- Mauerwerkmasonry
Claims (4)
- A coating system on building facades, in particular a composite thermal insulation system, comprising a reinforcing tissue (1) for insertion into a viscous coating compound applied as a reinforcing layer (2) to a substrate (5, 6) belonging to the building facade,
wherein the coating system has an additional tubular mat (4) inserted into the reinforcing layer (2) and resting over its entire surface against the substrate (5, 6) of the building facade, wherein the tubular mat (4) is made up of a plurality of hollow bodies (41) which are firmly connected to one another and each have a tubular structure, and wherein the reinforcing tissue (1) covers the tubular mat (4) on its side facing away from the substrate, characterised in that the hollow bodies (41) of the tubular mat (4) are formed as hollow cylinders with a tubular shape, wherein the individual hollow bodies (41) are inseparably connected to one another along their outer surface approximately in a linear manner and are each open at both distal end faces. - The coating system on building facades according to patent claim 1, characterised in that the diameter of the hollow bodies (41) of the tubular mat (4) is larger than the mesh size of the reinforcing tissue (1).
- The coating system on building facades according to one of the patent claims 1 or 2, characterised in that the hollow bodies (41) of the tubular mat (4) are made of a thermoplastic, in particular polypropylene, polyetherimide or polycarbonate, by means of an extrusion method.
- A method for producing a coating system on building facades, in particular a composite thermal insulation system, comprising the working steps:a. Applying a viscous coating compound as a reinforcing layer (2) to a substrate (5, 6) belonging to the building facade,b. Inserting a tubular mat (4), consisting of a plurality of hollow bodies (41) firmly connected to one another and each having a tubular structure, into the reinforcing layer (2) and pressing the tubular mat (4) against the substrate (5, 6) of the building facade, wherein the hollow bodies (41) of the tubular mat (4) are formed as hollow cylinders with a tubular structure, wherein the individual hollow bodies (41) are inseparably connected to one another along their outer surface in an approximately linear manner and are each open at both distal end faces,c. Inserting a reinforcing tissue (1) into the reinforcing layer (2) in such a way that the reinforcing tissue (1) covers the tubular mat (4) on its side facing away from the substrate (5, 6).
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DE102018119667.9A DE102018119667A1 (en) | 2018-08-13 | 2018-08-13 | Coating system on building facades and method for producing a coating system on building facades |
PCT/DE2019/100690 WO2020035105A1 (en) | 2018-08-13 | 2019-07-28 | Coating system on building facades |
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EP3837403B1 true EP3837403B1 (en) | 2022-03-09 |
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EP (1) | EP3837403B1 (en) |
DE (2) | DE102018119667A1 (en) |
WO (1) | WO2020035105A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2929152A1 (en) * | 1979-07-19 | 1981-02-12 | Artus Feist | ARRANGEMENT FOR HEAT ISOLATION AND SIMULTANEOUS HEAT ENERGY RECOVERY IN A BUILDING |
DE3926366A1 (en) | 1989-08-04 | 1991-02-14 | Anton Mueller | Reinforcement of plaster coating of wall - using plastics mesh or netting wire located in required position by spacer bars |
DE9012733U1 (en) * | 1990-09-06 | 1990-12-20 | Wiehofsky, Fritz, 8913 Schondorf | Plaster base |
DE102005040090B4 (en) | 2005-08-24 | 2007-07-19 | Alsecco Gmbh & Co. Kg | Surface-mounted system and reinforcement fabric |
DE102009007912B4 (en) | 2009-02-06 | 2014-03-27 | Sto Ag | Reinforcing mesh and coating system |
AT12879U1 (en) * | 2011-02-21 | 2013-01-15 | W & P Baustoffe Gmbh | Producing a filling, in particular a filling in thermal insulation systems |
US10011990B2 (en) * | 2015-07-20 | 2018-07-03 | P. Michael Collins | Laminated air circulation board |
-
2018
- 2018-08-13 DE DE102018119667.9A patent/DE102018119667A1/en not_active Withdrawn
-
2019
- 2019-07-28 EP EP19752093.5A patent/EP3837403B1/en active Active
- 2019-07-28 DE DE112019004101.0T patent/DE112019004101A5/en active Pending
- 2019-07-28 WO PCT/DE2019/100690 patent/WO2020035105A1/en active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
WO2020035105A1 (en) | 2020-02-20 |
DE112019004101A5 (en) | 2021-05-27 |
DE102018119667A1 (en) | 2020-02-13 |
EP3837403A1 (en) | 2021-06-23 |
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