EP4205861A1 - Dispositif de projection de béton - Google Patents

Dispositif de projection de béton Download PDF

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Publication number
EP4205861A1
EP4205861A1 EP22216860.1A EP22216860A EP4205861A1 EP 4205861 A1 EP4205861 A1 EP 4205861A1 EP 22216860 A EP22216860 A EP 22216860A EP 4205861 A1 EP4205861 A1 EP 4205861A1
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EP
European Patent Office
Prior art keywords
concrete
lance
supply
water
designed
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.)
Pending
Application number
EP22216860.1A
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German (de)
English (en)
Inventor
Paul-Antoine Wurtz
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Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP4205861A1 publication Critical patent/EP4205861A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/149—Spray pistols or apparatus for discharging particulate material with separate inlets for a particulate material and a liquid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/28—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with integral means for shielding the discharged liquid or other fluent material, e.g. to limit area of spray; with integral means for catching drips or collecting surplus liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/02—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
    • B28C5/026—Mixing guns or nozzles; Injector mixers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/06—Implements for applying plaster, insulating material, or the like
    • E04F21/08—Mechanical implements
    • E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure

Definitions

  • the invention relates to a device for spraying concrete according to the features of claim 1.
  • Blast furnace chutes have a refractory lining that is subject to constant wear and tear and must be continuously repaired. This repair is z. B. by shotcrete. The shotcrete sets immediately in contact with the hot channel lining. Therefore, the necessary technology for introducing shotcrete is usually available in the area of a blast furnace.
  • a mixer is usually used to mix the shotcrete.
  • the mixer is fed with a fine-grained material, resulting in a flowable mass.
  • This flowable mass is then transported from the mixer to a concrete pump.
  • the concrete pump typically conveys the material over a Double piston system in a delivery hose.
  • the conveying hose often has a diameter of 120 mm. This makes it very difficult to handle.
  • the operation of the system requires a relatively large number of personnel. One person has to start the concrete mixer, another person the pump and two people have to carry the relatively heavy hose with the nozzle. The work is physically difficult and laborious.
  • Another disadvantage of this system is the relatively high water consumption for cleaning the machine. Concrete is always lost when cleaning, as both the pump and the mixer and, of course, the delivery hoses have to be cleaned. On average, around 300 kg of concrete accumulates and has to be disposed of. Apart from the concrete losses, the outlay on equipment for such an arrangement for introducing shotcrete is also relatively high.
  • the invention is therefore based on the object of demonstrating a device for spraying concrete that is significantly easier to handle and, in particular, can be operated more cost-effectively.
  • the invention solves this problem with a device having the features of claim 1.
  • the device according to the invention for spraying concrete firstly comprises a delivery line which is set up and designed to receive concrete from an inlet end and to convey it to its outlet end.
  • the concrete is fed to a lance, which in turn is set up and designed to discharge the concrete by spraying.
  • the special advantages of the invention result in particular from the design of the lance.
  • the lance has an entry end for the concrete being fed from the conveyor line and a water supply adjacent the entry end.
  • the water supply is arranged and designed to introduce water into the lance so that the dry concrete mix mixes with the water in the lance and the flowability of the concrete in the lance is increased.
  • a dry refractory mass can therefore be used as the concrete mix, which is usually transported by means of a pneumatic conveyor. It is not mandatory to use a completely dry refractory mass. It is sufficient to use a relatively dry or only slightly damp concrete mix. This relatively dry concrete mixture, which is also referred to below as dry concrete, is transported with air from the pneumatic conveying source in the direction of the lance.
  • a binder supply is located in the area of the lance at a distance from the water supply.
  • the binder supply is set up and designed to introduce a binder into the water-enriched concrete.
  • Water glass or potassium silicate, for example can be used as a binder. This mixture, which was only produced shortly before the actual discharge, can now be applied.
  • the binder is also fed in at a relatively late point in time, which means that the dry concrete in the delivery line can be particularly dry. It does not have to transport binding agent or water in the quantities required for setting.
  • the lance is therefore significantly lighter than a delivery line with a cross-section of 120 mm, which is also filled with a wet concrete mix. As a result, the lance can be held and operated by just one person, which is a major handling advantage.
  • the lance also has an air supply as a special feature, which should not be confused with an air supply for conveying the concrete mix, but is set up and designed to form an annular air flow that determines the size of a spray cone of the concrete emerging from the lance.
  • the ring-shaped air flow which can also be referred to as an air ring, acts like a nozzle jacket that surrounds the material flow.
  • a conventional, refractory pourable concrete can be used in order to apply it with the device according to the invention, ie to spray it.
  • the preparation of the concrete mix is much easier.
  • No double-piston pump or mixer is required. Fewer staff are required.
  • the corresponding systems do not have to be transported and installed. With fewer system components, there are fewer hoses and less cleaning effort.
  • Another advantage is that there is no loss of concrete.
  • the finished mixture is produced shortly before exiting the lance.
  • the water consumption for cleaning the hoisting machine is also significantly lower, especially since the dry concrete is only conveyed pneumatically in the conveying line.
  • the high proportion of air in the conveying section reduces the weight of the conveying line per metre.
  • a concrete conveyor machine is usually always present in the area of blast furnaces. It is used for gutter repairs with a special gunning compound.
  • cast concrete has the advantage over this special gunning compound that it is denser and of a higher quality. The more densely the wall of the channel can be lined, the less slag and iron can penetrate the wall and wear out the wall. The concrete is usually applied to the hot channel and hardens immediately. The less water there is in the concrete mix, the faster the concrete hardens.
  • a further advantage of the method according to the invention is that there is no need to encase the channel wall. If formwork can be dispensed with, stripping can also be omitted. With the invention, therefore, intermediate repairs of the channel are possible quickly and easily. Downtimes of the blast furnace can be significantly reduced.
  • the device according to the invention is also particularly suitable for spraying coarse-grained material with a grain size of up to 19 mm.
  • material of this Grain cannot be processed with double piston pumps because they would block.
  • the very low water content of the material leads to a higher density and thus to a higher quality of the improvement work on the channel.
  • a nozzle ring is arranged at an outlet end of the lance, which is set up and designed to form the annular air flow that surrounds the material flow of the concrete emerging from the outlet end of the lance.
  • the nozzle ring can have several individual nozzles.
  • the individual nozzles can also be axially oriented openings in a circular ring plate.
  • a nozzle ring within the meaning of the invention is also an axially open annular space with a single annular opening from which an air flow exits in a ring shape in order to surround the material flow.
  • the annular opening can have a gap width of preferably 2 to 6 mm, in particular 3 to 5 mm, measured in the radial direction of the lance.
  • the nozzle ring protrudes by a length in relation to the outlet end for the concrete to be sprayed.
  • the air flow is guided on the outside by the nozzle ring.
  • the nozzle ring protrudes by a length that is greater than the diameter of the lance.
  • the length of the nozzle ring in front of the outlet end is 50 to 100 mm, preferably 60 to 80 mm.
  • the nozzle ring is attached to the lance and therefore also surrounds an end region of the lance in front of the exit end. This end area is preferably at least as long as the length of the nozzle ring in front of the outlet end.
  • a cylindrical tube can be used as the nozzle ring, which is slightly larger in diameter than the lance and that in the sufficiently long annular space between the outside of the lance and the inside of the nozzle ring, there is a space around the entire circumference of the nozzle ring homogeneous axially oriented annular air flow can be generated, which directs the material to be discharged.
  • the annular airflow is oriented axially and does not face into the flow of exiting material.
  • the air flow envelops the material flow, thereby focusing the jet and making a very effective contribution to guiding the material flow.
  • the ring-shaped air flow preferably has a constant diameter, which is directly adjacent to the material flow.
  • the connected air flow preferably has a pressure of approx. 5 to 6 bar.
  • a nozzle ring is arranged at an outlet end of the lance, which is adjustable in the longitudinal direction of the lance.
  • the nozzle ring is designed and configured to adjust the size of the spray cone of the concrete. The further the nozzle ring is pulled back in the direction of the lance, the larger the spray cone becomes. If the nozzle ring is pushed further forward, the spray cone of the concrete is reduced.
  • the air supply is advantageously used to form an annular air flow in the annular space between the nozzle ring and the lance, so that the size of the spray cone can be controlled by controlling the air flow alone without adjusting the nozzle ring.
  • the annular space has a plurality of openings distributed over its circumference, via which it is connected to an air distribution chamber that adjoins the annular space.
  • the openings can be bores with a diameter of 3 to 10 mm, which are distributed in a radial plane over the circumference, e.g. at an angular distance of 30° to 60°.
  • the openings are spaced from the exit end of the lance so that the air in the annular gap is first evenly distributed and then diverted towards the exit end to form the desired annular air flow there.
  • the air flow is dimensioned in such a way that the concrete flows through the nozzle ring without touching it. If the air flow is interrupted, the pourable concrete would flow out of the nozzle ring rather than being spattered.
  • the airflow is essential for the transport of the concrete following the discharge end of the lance. The air flow that carries the concrete through the lance to the outlet end is only used for transport to and in the lance.
  • the water supply is ring-shaped, so that the water can be supplied to the concrete distributed over the circumference.
  • the water supply is therefore preferably an annular nozzle arrangement with a plurality of outlet openings for the water arranged over the circumference of the flow channel. Due to the even supply of water, the dry mix of the concrete is wetted as evenly as possible and bonds with the concrete.
  • the binder is supplied in the direction of flow at a distance from the water supply.
  • the binder feed is also designed in the form of a ring, so that the binder can also be fed to the concrete previously mixed with water, distributed over the circumference.
  • the distance between the binder supply and the water supply can be 50 cm to 2 m.
  • the mixing section only has to be long enough for the water to be sufficiently mixed with the relatively dry concrete mixture and for the binding agent to be absorbed evenly.
  • the quality of the finished concrete mixture depends largely on the addition of water and binder.
  • the supply can be regulated via valves.
  • these valves for opening and closing the water supply, the binding agent supply and the air supply are located directly on the lance.
  • the operator of the lance can control all three valve positions and readjust them while spraying the concrete in order to create an optimal mixing ratio for the concrete.
  • valve for the water supply and the valve for the binding agent supply are arranged adjacent to one another at a distance of less than 30 cm, so that an operator of the lance only needs one hand to operate both valves while he is holding the spear with the other hand.
  • the device according to the invention is designed for one-man operation. If the valves needed to operate are in close proximity, the concrete can continue spraying while the operator adjusts or dials the valve positions to get the right mix ratio.
  • valve for the air supply is also arranged at a distance of less than 30 cm from the other valves, so that an operator of the lance only needs one hand to operate the valves while he is working with holding the spear in his other hand. Also this one
  • the concept is based on one-man operation of the device and in particular the lance. For ergonomic reasons, all necessary settings for operating the lance or the spraying device can be combined in such a way that the operator can always hold the lance with one hand and does not have to interrupt his work when the valves are actuated.
  • the invention provides that the valve for the water supply, the valve for the binding agent supply and the valve for the air supply can be actuated via a single common actuating lever. All three gas and liquid flows can be stopped and started via a common actuating lever in the sense of a start-stop function.
  • the respective valve positions can preferably be adjusted independently of one another in such a way that the desired mixing ratio results.
  • the respective valve position can be adjusted independently of the actuating lever.
  • the lance has a cable cross-section of less than 50 mm, so that the lance can be carried and operated by a single person.
  • the line cross-section of less than 50 mm preferably also continues in the area of the delivery line.
  • the lance preferably has a diameter of 40 mm to 45 mm.
  • the lance according to the invention is set up and designed in particular to discharge refractory concrete and in particular to apply it to a hot launder of a melting furnace.
  • the concrete used is, in particular a dry concrete, which can be transported by means of air within the conveyor line. There is no lower limit to the grit.
  • dry concrete with a grain size of up to 19 mm can be processed.
  • the rotor spraying machine includes a remote control for start-stop with regard to the concrete to be conveyed and the conveying air for conveying the concrete, with the remote control being arranged in the area of the valves for the water supply, the binding agent supply and the air supply .
  • the remote control and the valves can be actuated via a common actuating element.
  • the figure 1 shows a device 1 for pointed concrete with a delivery line 2 in the form of a flexible transport hose.
  • the transport hose has a diameter of preferably less than 50 mm, in particular a diameter of 45 mm.
  • a dry concrete mixture 3 is introduced pneumatically via a rotor spraying machine 4 into an inlet end 5 of the conveying line 2 and transported to the outlet end 6 thereof.
  • the outlet end 6 is followed by a water supply 7 which is designed and set up to introduce water into a mixing section 8 which follows in the direction of flow of the concrete mixture 3 .
  • the water supply 7 is ring-shaped, so that the water can be fed to the concrete distributed over the circumference. Several entry points for the water in the area of the water supply 7 are shown symbolically. It is an annular arrangement which surrounds the mixing zone 8 .
  • a ring-shaped binder supply for example for the supply of silicate or water glass.
  • the binder feed 9 is followed by a further mixing section 10 and finally an annular air feed 11.
  • the air feed 11 builds an annular Air flow 12 between an outer casing of the lance 13 and a nozzle ring 14 that can be adjusted in the longitudinal direction of the lance 13 .
  • the size of the spray cone of the concrete can be influenced.
  • the figure 1 shows that valves 15, 16, 17 for the supply of water, binder and air are arranged relatively close together, in this case in the area of binder supply 9.
  • the binder supply 9 is located approximately in the middle area between the upstream mixing section 8 and in the direction of flow downstream mixing section 10.
  • the valves 15, 16, 17 are arranged so that they can be easily operated by a single person carrying the lance 13.
  • the distance between the valves 15, 16, 17 is preferably of the order of less than 30 cm.
  • the actuation of the valves 15, 16, 17 can be combined with one another, so that a single-lever operation of all three material flows is possible.
  • the air and material supply to the rotor spraying machine 4 can also be controlled via a remote control 18 for the rotor spraying machine 4 .
  • FIG 2 shows an alternative embodiment of a lance 13, where for components with the same function as in figure 1 used reference symbols are retained.
  • the front end of the lance 13 is shown in longitudinal section.
  • the lance 13 extends to its outlet end 22, at which the concrete mixture 3 emerges as a material flow M according to the central arrow shown.
  • the air supply 11 is shown on the lance 13 .
  • the air supply 11 includes a nozzle ring 14. It is a circular-cylindrical tube that is slightly larger in diameter than the lance 13 and delimits an annular space 21 with the lance 13.
  • Annulus 21 is a narrow gap of width S1. In this case, the width S1 is 3 mm.
  • the diameter D1 of the lance 13 is 40 mm.
  • the annular space 21 is open to the outlet end 22 of the concrete mixture 3 of the lance 13 . Its other axial end is closed.
  • the annular space 21 is surrounded by an air distribution chamber 19 over the entire circumference.
  • An air line 24 for air supply is connected to the air distributor chamber 29 radially on the outside. Openings 24 are distributed over the inner circumference of the air distribution chamber 19 .
  • air from the air distribution chamber 19 flows radially evenly from all sides into the annular space 21.
  • the air is deflected in the axial direction, so that a purely axially oriented air flow 12 is generated at the outlet end 22, which is guided parallel to the material flow M.
  • the air flow 12 is not directed into the material flow M, ie there are no means on the nozzle ring 13 which cause the air flow to be at an acute angle to the material flow.
  • the air stream 12 is guided beyond the exit end 12 by the nozzle ring 14 in that the nozzle ring 14 extends beyond the exit end 12 .
  • This cylindrical end section 23 of the nozzle ring 14 has a length L1 which is greater than the diameter D1 of the lance 13. It is 70 mm in this case.
  • the air flow 23 flows along the inside 25 of the end section 23 parallel to the material flow M.
  • the material flow M is encased overall by the air flow 12 guided in parallel.
  • the air flow 12 is not directed into the material flow M.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Nozzles (AREA)
EP22216860.1A 2021-12-29 2022-12-28 Dispositif de projection de béton Pending EP4205861A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021006406.2A DE102021006406A1 (de) 2021-12-29 2021-12-29 Vorrichtung zum Spritzen von Beton

Publications (1)

Publication Number Publication Date
EP4205861A1 true EP4205861A1 (fr) 2023-07-05

Family

ID=84688207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22216860.1A Pending EP4205861A1 (fr) 2021-12-29 2022-12-28 Dispositif de projection de béton

Country Status (2)

Country Link
EP (1) EP4205861A1 (fr)
DE (2) DE102021006406A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040168A1 (fr) * 1997-03-13 1998-09-17 North American Refractories Co. Gunitage par voie seche d'un beton refractaire
FR2798092B1 (fr) * 1999-11-15 2001-11-30 Lafarge Refractories Lance de projection d'un beton par voie seche et bague de mouillage correspondante
WO2017021259A1 (fr) * 2015-07-31 2017-02-09 Maria Elisabeth Holzweber Procédé et dispositif d'application d'une isolation sur des édifices
EP3431172A1 (fr) * 2017-06-30 2019-01-23 Baumit Beteiligungen GmbH Buse pour béton, mortier ou analogue ainsi que son utilisation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2036088A1 (en) 1970-07-21 1972-02-03 Plibrico Co Gmbh Furnace cladding - using steam jet to spray insulating material
DE8909640U1 (de) 1989-08-11 1989-10-19 Bergwerksverband Gmbh, 4300 Essen Einrichtung zur Benetzung von insbesondere als Spritzbeton oder -mörtel zu verwendenden feinkörnigen Materials
DE4240847A1 (de) 1992-12-04 1994-06-09 Schuerenberg Beton Spritzmasch Schutzeinrichtung gegen den Rückprall bei Spritzbetonarbeiten
DE29508527U1 (de) 1995-03-28 1995-09-28 MBT Holding AG, Zürich Zum Beimischen eines flüssigen Zusatzstoffes zu einer fließfähigen Grundmasse dienende Vorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040168A1 (fr) * 1997-03-13 1998-09-17 North American Refractories Co. Gunitage par voie seche d'un beton refractaire
FR2798092B1 (fr) * 1999-11-15 2001-11-30 Lafarge Refractories Lance de projection d'un beton par voie seche et bague de mouillage correspondante
WO2017021259A1 (fr) * 2015-07-31 2017-02-09 Maria Elisabeth Holzweber Procédé et dispositif d'application d'une isolation sur des édifices
EP3431172A1 (fr) * 2017-06-30 2019-01-23 Baumit Beteiligungen GmbH Buse pour béton, mortier ou analogue ainsi que son utilisation

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DE202022107288U1 (de) 2023-03-03
DE102021006406A1 (de) 2023-06-29

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