Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
• • 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
• • 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
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
  • E04B2/88—Curtain walls
  • E04B2/90—Curtain walls comprising panels directly attached to the structure
  • E04B2/94—Concrete panels
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
  • E04B9/0428—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like having a closed frame around the periphery
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
  • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
  • E04B2/70—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood
  • E04B2/706—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with supporting function
  • E04B2/707—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with supporting function obturation by means of panels
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
  • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
  • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
  • E04B2/7453—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with panels and support posts, extending from floor to ceiling
  • E04B2/7457—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with panels and support posts, extending from floor to ceiling with wallboards attached to the outer faces of the posts, parallel to the partition
• • 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
  • E04F13/0889—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 characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections
  • E04F13/0898—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 characterised by the joints between neighbouring elements, e.g. with joint fillings or with tongue and groove connections with sealing elements between coverings
• • 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
  • E04F13/18—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 organic plastics with or without reinforcements or filling materials or with an outer layer of organic plastics with or without reinforcements or filling materials; plastic tiles

Definitions

• the present invention relates to the dry construction of lightweight walls, including the construction of lightweight facades bearing or non-bearing that is to say, which do not participate in the stability of the building.
• Non-load bearing lightweight façades are facades built with light industrial materials, on a building frame as opposed to a traditional construction in concrete veil and filling by masonry or other.
• Lightweight non-load-bearing façades are carried by the structure of the building, which is called the supporting structure.
• the supporting structure is based on the foundations.
• Light non-load bearing facades are attached to the supporting structure via a so-called primary framing framework.
• Lightweight non-load-bearing facades can themselves include, when necessary, a framework that is called a secondary framework, attached to the primary framework.
• Lightweight load-bearing facades are carried directly by the foundations.
• the protection against the water of the facades is therefore an important point and water tightness can not be neglected.
• the penetration of water can lead to the degradation of the interior cladding of the walls, the degradation of the energetic performances of the facade, as well as the bursting of the frost materials.
• the facade separates an outdoor environment from an indoor one, with a higher water vapor pressure indoors, the water vapor contained in the indoor air will tend to migrate outward.
• the water vapor can meet a temperature low enough to cause its condensation at the place where the temperature is equal to the dew point.
• the presence of moisture can then alter the materials, the collages, and degrade the insulation performance of the facade, this damage is aggravated by the alternating cycles of humidification and evaporation.
• the filler materials In order to avoid this phenomenon of condensation, it is possible to choose the nature and arrangement of the filler materials depending on the climate, by adding one or more membranes to the site and / or by applying one or more resins or polymer films on the surface. materials to achieve vapor, air, wind and / or rain tightness.
• Membranes can be applied facing the cavity of the facade on the interior side of the building, to prevent the maximum of water vapor from entering the filling (vapor barrier).
• Membranes can be applied to the facade on the exterior side of the building to prevent the maximum amount of wind and rain from entering the fill (wind and rain).
• a windbreak and rain cover has the advantage of improving the airtightness and watertightness of the building by preventing rain and wind from entering the building and thus degrade the insulation properties of the components. of building and their durability. This helps to improve the energy efficiency of the building.
• the problem to be solved by the invention is to provide a new means adapted to build light facades resistant to air transfers and thermohydric transfers avoiding the disadvantages mentioned above.
• a plate based on hydraulic binder whose coating is coated in whole or part with a polymer film obtained by polymerization under the action of radiation; a frame;
• said element does not include any membrane resistant to air transfer and thermohydric transfer.
• the invention also proposes the use of the above element to achieve a light facade.
• the invention also proposes a light facade comprising at least the element described above.
• the invention also relates to the use of a plate based on hydraulic binder whose coating is coated in whole or in part with a polymer film obtained by polymerization under the action of radiation such as vapor barrier, rain screen or windbreaker.
• the invention offers at least one of the critical advantages described below.
• the element according to the invention makes it possible to maintain the watertightness or airtightness of the facade in which it is incorporated and to increase the reliability in terms of sealing of this facade.
• Another advantage of the element according to the invention is that it makes it possible to eliminate on site the step of applying membranes or resins, a step that consumes time and decreases the productivity of the site.
• the element according to the invention allows a great speed of installation on site.
• the element according to the invention offers another advantage that it can also be used for the construction of lightweight facades that is to say that contribute to the stability of the building, particularly buildings in North America.
• lightweight frames for example metal or wood.
• light facade is preferably meant according to the present invention a facade comprising one or more walls, at least one outer wall of which is characterized by:
• the light facade can be chosen from curtain façades, integral curtain façades, vertically-running curtain façades, semi-curtain façades, integral semi-curtain façades, vertically-curtained semi-curtain façades, facades panels and facades panels running horizontally. All these terms are defined in standard NF P28-001.
• supporting structure is preferably meant according to the invention all the elements of a structure carrying more than their own weight.
• an element that can be a carrier there may be mentioned poles, slats, floors, walls.
• primary framework is preferably meant according to the invention all the uprights and crosspieces of wood or metal or synthetic materials attached to the supporting structure of the construction or foundation and which serves as support for structural elements such as filler elements.
• structural elements such as filler elements.
• precadres the primary framework may be the supporting structure, as is the case in North America (in English, the term “load-bearing frame” is used in this case).
• secondary framework is preferably meant according to the invention all amounts and sleepers wood or metal or synthetic materials, directly attached to the primary frame and which serves as a support for frames, frames, fills or cladding.
• grouting component is preferably meant according to the invention a device that can ensure the continuity of watertightness, water vapor or air.
• resistant to air transfers and thermohydric transfers preferably means according to the invention a material or product having a controlled permeance of heat, water and / or air transfers.
• hydraulic binder is preferably meant according to the present invention any compound having the property of hydrating in the presence of water and whose hydration makes it possible to obtain a solid having mechanical characteristics.
• the hydraulic binder according to the invention may in particular be a hydraulic binder based on calcium sulphate.
• the hydraulic binder according to the invention is plaster.
• calcium sulfate hydraulic binders is meant according to the invention the hydraulic binders based on partially anhydrous or totally anhydrous calcium sulfate.
• a plate based on hydraulic binder whose coating is coated in whole or part with a polymer film obtained by polymerization under the action of radiation; a frame;
• said element does not include any membrane resistant to air transfer and thermohydric transfer.
• the element according to the invention is an element resistant to air transfer and thermohydric transfer, that is to say that this element has a controlled permeability to transfers of air, water in the form of vapor or liquid .
• the hydraulic binder-based plate suitable for the element according to the invention may be a cement slab or a plasterboard, preferably this slab is prefabricated in a prefabrication plant.
• the cement plates that are suitable for the element according to the invention may be based on Portland cement, cement described according to EN 197-1, calcium aluminate cement, magnesium cement or sulfoaluminous cement cement, and mixtures thereof. .
• Cements based on calcium aluminates, for example aluminous cements or Cements Fondus ® are also suitable according to the invention as well as cements conforming to standard NF EN 14647.
• the preferred magnesium cement comprises magnesium carbonates, magnesium oxides or magnesium silicates, for example as described in US Patent No. 4,838,941.
• the preferred cement that is suitable according to the invention is Portland cement, alone or in a mixture with other cements mentioned above, for example sulphoaluminous cements.
• the Portland cement that is particularly suitable according to the invention is that described according to the standard EN 197-1.
• the cement plates can be produced by various processes and in particular by non-continuous processes (for example molding, pressing, filtering, etc.).
• So-called lightweight cement plates from the incorporation of light loads are also suitable for the element according to the invention. These light loads are generally derived from natural rocks or artificial rocks or are loads from petroleum products, for example polystyrene beads.
• Cement plates reinforced by the incorporation of fibers are also suitable for the element according to the invention.
• Plasterboard suitable for the element according to the invention may be composed of a plaster body cast in the factory between two sheets of paper constituting both its facing and its frame.
• one of the sheets of paper used to make the plasterboard is dark in color, which may vary between a gray color and a brown color, because it is composed of cellulosic fibers that have not undergone a particular purification treatment .
• this gray paper is obtained from unbleached chemical pulp, and / or mechanical pulp, and / or thermomechanical pulp, and / or semi-chemical pulp.
• mechanical pulp is generally meant a paste obtained entirely by mechanical means from various raw materials, mainly wood, which can be provided by wood-based recovery products such as old cartons, kraft paper clippings and / or or old newspapers.
• thermomechanical pulp is meant a paste obtained by heat treatment followed by a mechanical treatment of the raw material.
• semi-chemical paste a paste obtained by removing some of the non-cellulosic components contained in the raw material by means of a chemical treatment, and requiring subsequent mechanical treatment to disperse the fibers.
• the other sheet of paper used to make the plasterboard has a visible face called cladding, which is generally lighter in color than the gray sheet.
• the hydraulic binder-based plate which is suitable for the element according to the invention is a plasterboard having a gypsum core whose density can vary as a function of the distance from the surface, with for example a low density core layer incorporating foaming agents into the paste, this core layer being sandwiched by high density surface layers (dense layer).
• a plasterboard having a gypsum core whose density can vary as a function of the distance from the surface, with for example a low density core layer incorporating foaming agents into the paste, this core layer being sandwiched by high density surface layers (dense layer).
• An example of this type of plate is the conventional plasterboard of the type BA13 with dense layers.
• the hydraulic binder based plate which is suitable for the element according to the invention may comprise an anti-fungal agent.
• the hydraulic binder-based plate which is suitable for the element according to the invention may comprise a water-repellent agent.
• the hydraulic binder plate suitable for the element according to the invention comprises at least one facing.
• Conventional siding used in the manufacture of gypsum board is particularly suitable as for example the fiberglass facings.
• cements made of cellulose fibers (paper, recycled paper), synthetic fibers (polyester, polypropylene, polyethylene, etc.) or inorganic fibers (siding made of fiberglass, ceramic fibers, etc.) may be mentioned.
• the facings may be woven or non-woven.
• the fibers are generally joined to one another using, for example, a thermosensitive or hot-melt resin such as urea-formaldehyde resins, resins acrylics, melamine-formaldehyde resins with or without urea additions or polyvinyl acetate resins. It is also conceivable to add light loads between the fibers.
• a thermosensitive or hot-melt resin such as urea-formaldehyde resins, resins acrylics, melamine-formaldehyde resins with or without urea additions or polyvinyl acetate resins.
• urea-formaldehyde resins resins acrylics, melamine-formaldehyde resins with or without urea additions or polyvinyl acetate resins.
• urea-formaldehyde resins resins acrylics, melamine-formaldehyde resins with or without urea additions or polyvinyl acetate resins.
• the hydraulic binder plate suitable for the element according to the invention may be coated on one side, in whole or part, a metallized plastic film reflecting the infrared radiation.
• metalized plastic film mention may be made of metalized polyethylene terephthalate or metallized polyester.
• the survival blankets could be used to coat one side of the hydraulic binder plate suitable for the element according to the invention.
• the hydraulic binder plate which is suitable for the element according to the invention may be coated on one side, in whole or in part, with a plastic film.
• the hydraulic binder plate which is suitable for the element according to the invention may be coated on one side, in whole or part of a metal film, for example an aluminum film or any other type of metal.
• the hydraulic binder plate suitable for the element according to the invention is coated, in whole or in part, with a polymer film obtained by polymerization under the action of radiation.
• This type of polymer film obtained by radiation polymerization is also called photocrosslinked polymer or crosslinkable film-forming resin or photosensitive resin.
• a composition of unpolymerized reactive monomers and / or prepolymers is applied in whole or in part to the facing of the hydraulic binder plate.
• This composition of unpolymerized monomers and / or prepolymers may be based on the following precursors:
• a prepolymer based on a resin comprising at least one unsaturated group such as acrylate, methacrylate, allyl, vinyl, epoxy group and / or their mixtures such as, for example, an acrylic resin, a methacrylic resin, a polyester resin, a resin chlorinated polyester, an epoxy resin, a melamine resin, a polyamide resin, a silicone resin, a polyether resin, a polyurethane resin, a polyurea-urethane resin and / or mixtures thereof.
• the resins comprising the acrylate group may be partially modified by the action of an amine.
• polyurethanes comprising acrylate groups and epoxides comprising acrylate groups are particularly preferred according to the invention.
• a monomer comprising at least one reactive group for example an unsaturated group.
• reactive groups include for example the acrylate group, methacrylate, allyl, vinyl, epoxy and / or mixtures thereof.
• the acrylic esters of alcohols such as isobornyl acrylate (IBOA), diols such as diethylene glycol diacrylate (DEGDA), tripropylene glycol diacrylate
• TPGDA bisphenol A diacrylate
• polyols such as trimethylolpropane triacrylate (TMPTA), glycerol propoxylated triacrylate (GPTA), pentaerythritol tri- and tetra-acrylate, are usable according to the invention.
• TMPTA trimethylolpropane triacrylate
• GPTA glycerol propoxylated triacrylate
• pentaerythritol tri- and tetra-acrylate are usable according to the invention.
• Methyl pentanediol diacrylate (MPDDA) is particularly preferred according to the invention.
• a photoinitiator such as, for example, mixtures of benzophenone derivatives and tertiary amines, or cationic systems such as triphenylsulphonium hexafluoroantimonate or, for example, a mixture of oxide acyl phosphines such as Irgacure TM 819 (BAPO) or Darocur TM TPO (Mono acyl phosphine (MAPO)), Darocure TM 4265 (a mixture of MAPO and ⁇ -hydroxyketone 50/50) marketed by Ciba and acetophenone- ⁇ -hydroxy- ⁇ , ⁇ -di-substituted.
• a photoinitiator such as, for example, mixtures of benzophenone derivatives and tertiary amines, or cationic systems such as triphenylsulphonium hexafluoroantimonate or, for example, a mixture of oxide acyl phosphines such as Irg
• compositions according to the invention of monomers and / or unpolymerized reactive prepolymers comprises:
• MPDDA Methyl pentanediol diacrylate
• composition of unpolymerized reactive monomers and / or prepolymers may comprise from 1% to 10% by weight of photoinitiator, preferably from 2% to 8% and more preferably from 3% to 6%.
• composition of monomers and / or unpolymerized reactive prepolymers can be prepared by simple mixing of its components, using any type of mixer. The resulting mixture is stable and can be stored for several months at room temperature and away from direct sunlight.
• composition of unpolymerized reactive monomers and / or prepolymers is applied in whole or in part to the facing using an applicator roll, a brush or a spray or other means for depositing a layer fine composition on the siding. This application can take place during or after the manufacture of the hydraulic binder plate.
• the composition of unpolymerized reactive monomers and / or prepolymers may be applied in one or more layers.
• the total thickness of said composition deposited on the facing is preferably from 5 to 100 microns, more preferably from 10 to 60 microns and even more preferably from 15 to 50 microns.
• a polymerization may or may not be carried out between the layers.
• composition of monomers and / or unpolymerized reactive prepolymers is applied in two layers of 20 microns with a polymerization between the two applications, instead of the application of a single layer of 40 microns .
• the polymerization of the reactive monomers and / or prepolymers takes place under the action of radiation, preferably under the action of waves whose wavelength is in the visible spectrum to ultraviolet, or whose wavelength is shorter still. It is also conceivable that the polymerization takes place under the action of infra-red rays.
• the radiations cause the polymerization by condensation reactions or additions of precursors of the polymer, in particular the radiation causes the crosslinking of precursors of the polymer. It is also conceivable that the polymerization takes place under the action of an electron beam. In this case, the composition of unpolymerized reactive monomers and / or prepolymers does not comprise a photoinitiator, since the energy of the electron beams is sufficient to create the free radicals necessary for the polymerization.
• the polymer film is obtained by polymerization under the action of ultraviolet radiation.
• Ultraviolet (UV) rays can excite or decompose the photoinitiator and cause the formation of free radicals or ions which leads to the polymerization of the prepolymer with the monomer.
• the polymerizations can be carried out at a speed of passage under the UV lamp from 5 meters / minute to 30 meters / minute.
• the total dose of energy received (in one or more times if necessary) by the composition of monomers and / or reactive prepolymers is preferably 300 to 1200 mJ / cm 2 .
• the polymerization can be carried out in the presence of an inert gas, such as nitrogen, thereby reducing the amounts of photoinitiator in the composition, and also hardening the surface of the polymer film.
• an inert gas such as nitrogen
• the polymerization causes the formation of the polymer film.
• This polymer film is preferably continuous. According to a first variant, this polymer film is located on one side of the hydraulic binder plate. According to a second variant, the two sides of the hydraulic binder plate are entirely or partially coated with the polymer film.
• one side of the hydraulic binder plate is completely coated with the polymer film.
• the polymer film may further comprise an anti-fungal agent, a coloring agent, pigments, an agent or a mineral filler to improve the adhesion of a joint or a paint or other surface application likely to to be deposited on the hydraulic binder plate (such as, for example, silica, calcium carbonate, titanium dioxide, magnesium carbonate, calcium sulfate, magnesium oxide, hydroxide calcium or a powdery solid).
• an anti-fungal agent such as, for example, silica, calcium carbonate, titanium dioxide, magnesium carbonate, calcium sulfate, magnesium oxide, hydroxide calcium or a powdery solid.
• the element according to the invention resistant to air transfers and thermohydric transfers for the field of construction comprises at least one framework.
• This framework may be metal, fiber cement, wood, composite material or synthetic material.
• This frame may be a metal structure, an amount or a rail.
• the jointing component of the element according to the invention can be in high parts, in low parts or in lateral junctions, and it ensures the continuity of the performances fulfilled by the facade. This continuity must be ensured while being subject to the known stresses of the building, allowing the predictable differential behavior of the elements and taking into account the manufacturing tolerances and installation of these various elements.
• This grouting component makes it possible to guarantee maximum sealing of the element according to the invention.
• This grouting component may be chosen from a grouting compound, a putty (see for example NF DTU 44.1), a bituminous coating and a self-adhesive strip resistant to air transfers and thermohydric transfers.
• a grouting coating it may comprise at least mineral fillers, water, a hydrophobic agent, an anti-fungal agent and / or a polymer.
• the hydrophobic agent may for example be a silicone derivative. This agent allows in particular a better resistance to aggression of water vapor.
• the grout may also comprise an aqueous dispersible organic binder, for example polyvinyl acetate and / or acrylic acid esters. This binder can make it possible to give the plaster a sufficient flexibility to withstand the mechanical stresses, and at the same time a sticky power to obtain a good grip on the overall surface.
• a workability agent including a water-retaining agent and thickener, for example methylhydroxyethylcellulose.
• the element according to the invention can be used to produce a light facade, a ceiling, a lining, an insulation system, or a partition for example a partition wall, a partition wall or a bulkhead.
• the element according to the invention can be used to make a light facade.
• the framework, the plate and the grouting component are assembled together.
• Such a method is realized, for example, when gypsum boards coated with a cardboard facing with a jointing compound are assembled to form the envelope of a building separating the exterior from the inside, in particular light facades on non-load bearing framework or lightweight light structures.
• a common technique of construction is to fix plasterboards on a metal frame comprising horizontal rails fixed for example to the floor and uprights.
• This technique of building walls is relatively simple and inexpensive.
• the invention relates to the use of a member resistant to air transfers and thermohydric transfers to achieve a light facade comprising at least: a plate based on hydraulic binder whose facing is coated in whole or part of a polymer film polymerized under the action of radiation;
• said element does not include any membrane impervious to air transfer and thermohydric transfer.
• a plate based on hydraulic binder whose coating is coated in whole or part with a polymer film obtained by polymerization under the action of radiation; a frame;
• said element does not include any membrane resistant to air transfer and thermohydric transfer.
• the invention also relates to the use of a hydraulic binder-based plate whose coating is coated in whole or part with a polymer film obtained by polymerization under the action of radiation as a vapor barrier.
• the invention also relates to the use of a hydraulic binder-based plate whose cladding is coated in whole or part with a polymer film obtained by polymerization under the action of radiation as a rain cover.
• the invention also relates to the use of a hydraulic binder based plate whose coating is coated in whole or part with a polymer film obtained by polymerization under the action of radiation as windshield.
• Photomer TM are marketed by the company IGM Resins
• the Darocur TM and Irgacure are marketed by Ciba company composition of ormules (% by weight)
• the compounds of the chosen formula were loaded into a mixer and then stirred at ambient temperature until a homogeneous mixture was obtained.
• the mixture was stable and it could be stored for several months at room temperature and away from direct sunlight.
• This mixture was applied on the siding of the standard BA13 type plasterboard using an applicator roll then cured. under the action of UV radiation. UVs can decompose the photoinitiator which leads to the polymerization of acrylic functions.
• the polymerization was carried out at a speed of passage under the UV lamp from 5 meters / minute to 30 meters / minute, the received energy dose was sufficient to obtain the most complete polymerization possible and avoid any sticky effect on the surface of the polymer film.
• UV and moisture aging tests in a Q-UV device as used in ISO-1 1507, or by exposure for several months outdoors, weather and sun with a daily watering of 2 hours, were carried out and showed a very good resistance of the formulas A to F.
• the formula D showed no visible alteration after 4 months of exposure.
• Formulas E and F were less viscous, with a measured viscosity of the order of 1700 mPa.s (Brookfield LVT) against about 4000 mPa.s for formulas A to D. After polymerization by exposure to UV radiation, formulas E and F gave softer polymer films than those of formulas A to D.
• the polymerization was carried out after each layer by passing under a mercury vapor UV lamp with a nominal power of 80 Watt / cm.
• the rate of passage in front of the lamp was 7 meters / minute and the actual dose received by the formula was 524 mJ / cm 2 at each pass.
• the sample coated with the polymer film was exposed to the weather in outdoor conditions, with forced watering for two hours a day.
• the performance and strength of the polymer film were assessed by measuring the water uptake using the Cobb test.
• control sample was destroyed by the exposure conditions after 105 days and no measurement was possible at 105 days.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Electromagnetism (AREA)
• Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Materials Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Finishing Walls (AREA)
• Building Environments (AREA)
• Load-Bearing And Curtain Walls (AREA)
• Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
• Panels For Use In Building Construction (AREA)

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Publications (1)

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Citations (4)

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• 2011
  • 2011-02-21 WO PCT/FR2011/050357 patent/WO2012127126A1/fr active Application Filing
• 2012
  • 2012-02-17 US US14/000,496 patent/US20130318901A1/en not_active Abandoned
  • 2012-02-17 RU RU2013142585/03A patent/RU2565309C2/ru not_active IP Right Cessation
  • 2012-02-17 BR BR112013021230A patent/BR112013021230A2/pt not_active IP Right Cessation
  • 2012-02-17 WO PCT/FR2012/050352 patent/WO2012114028A1/fr active Application Filing
  • 2012-02-17 UA UAA201311110A patent/UA109808C2/ru unknown
  • 2012-02-17 PE PE2013001942A patent/PE20141713A1/es not_active Application Discontinuation
  • 2012-02-17 EP EP12709934.9A patent/EP2678487A1/fr not_active Withdrawn
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