EP3328815A1 - Procédé de création de motifs sur la surface d'une composition à base de liant hydraulique par impression - Google Patents
Procédé de création de motifs sur la surface d'une composition à base de liant hydraulique par impressionInfo
- Publication number
- EP3328815A1 EP3328815A1 EP16745701.9A EP16745701A EP3328815A1 EP 3328815 A1 EP3328815 A1 EP 3328815A1 EP 16745701 A EP16745701 A EP 16745701A EP 3328815 A1 EP3328815 A1 EP 3328815A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- hydraulic binder
- acid
- deactivating
- printing
- 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.)
- Withdrawn
Links
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- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 229960001790 sodium citrate Drugs 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 229960002167 sodium tartrate Drugs 0.000 description 1
- 235000011004 sodium tartrates Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 239000001069 triethyl citrate Substances 0.000 description 1
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 description 1
- 235000013769 triethyl citrate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4572—Partial coating or impregnation of the surface of the substrate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4578—Coating or impregnating of green ceramics or unset concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5016—Acids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
- C04B41/5323—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete to make grain visible, e.g. for obtaining exposed aggregate concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/72—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone involving the removal of part of the materials of the treated articles, e.g. etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
- B28B11/048—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers by spraying or projecting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/188—Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
Definitions
- the present invention relates to a process for creating patterns on a surface of a composition based on hydraulic binder, especially concrete, by printing.
- Concrete is a building material used in the manufacture of elements that can have very different forms and aspects.
- the deactivated concrete whose aggregates are apparent, allows in particular to decline in a wide range of aspects and colors. It is found on building sites (sidewalks, squares, car parks, courtyards, walks %) but also in the manufacture of street furniture (planters, garbage cans %), gravel tiles or wall panels.
- the final appearance of deactivated concrete depends mainly on its composition.
- the aggregates used can be of different sizes, shapes and colors (white marble, red rock ).
- the color of the cement can add a specific touch, since it can be chosen gray, white or dyed by a dye.
- deactivated concrete requires the application on the concrete surface of an agent to delay the setting of concrete surface.
- This agent is generally called “surface deactivator” or “surface setting retarder”.
- the deactivating agent When it is desired to produce large-area molded parts or parts whose deactivated surface is not in contact with the mold, for example parts intended to form soils, the deactivating agent is sprayed on the surface of the concrete after it has been put into operation. in place and the float. Thus used, the deactivating agent is called "deactivating positive".
- the surface deactivator In contact with the surface of a composition based on fresh hydraulic binder, the surface deactivator penetrates by diffusion to a certain depth and induces retardation of setting.
- the surface uncured hydraulic binder layer remains brittle and can be removed.
- the objective is to make the aggregates appear on the surface.
- the depth of the layer retarded by the deactivating composition also called digging force or attack force, is mainly chosen according to the size of the aggregates present.
- the objective is to make the aggregates appear on the surface, so the digging force depends on the desired aesthetic effect, as well as the size of the aggregates.
- the deactivating composition is chosen according to the desired effect, typically the larger the aggregates, the greater the need for the composition to have a large digging force. It may be interesting, for aesthetic reasons, to inscribe elements in the concrete, etc. to have a method for creating patterns on the concrete surface.
- these patterns can be created by deactivating the desired areas of the surface of a composition based on fresh hydraulic binder.
- the patent application EP 1 177 081 describes a method of creating a concrete coating having patterns with a deactivating agent transferred to a surface in contact with the concrete to be molded by means of a printing technique .
- the deactivating agent is placed on a surface that will be placed in contact with the concrete, but not on the surface of the concrete itself.
- this surface is a membrane on which patterns have been printed using the deactivating agent as ink.
- the membrane is deposited at the bottom of the mold in which the concrete will be poured. It is therefore necessary to prepare or buy a printed membrane.
- the membrane is a waste to be eliminated.
- this surface is the mold in which the concrete will be poured.
- the desired patterns comprising the deactivating agent are printed directly at the bottom of the mold. This embodiment is however applicable only for molded parts.
- Patent Application WO 2014/006102 discloses a method for patterning a surface of a hydraulic binder composition, comprising depositing a stencil on the surface of the fresh hydraulic binder composition and then storing the same. applying a deactivating composition (D1) to the surface thus covered. Again, it is necessary to prepare or buy a stencil, and the stencil is a waste to be removed after use.
- a deactivating composition D1
- these patterns can be created by acid etching of the desired areas of the surface of a cured hydraulic binder composition.
- the patent application US 2010/0313519 describes a method for creating a non-slip hydraulic binder composition surface, one of the steps of which is the application of an acidic solution on the surface to attack and render it the apparent aggregate.
- the acid solution is applied by a sprinkler system or a sprayer.
- Application of the acidic solution to a localized portion of the surface to reveal surface patterns is not suggested.
- the surface may contain patterns, but these are created by making cuts in the composition based on fresh hydraulic binder, the geometry of which corresponds to the desired patterns.
- the development of a method of creating patterns on the surface of a concrete of a workpiece that can be molded or not and that does not require a membrane or stencil is therefore required.
- the invention relates to a process for creating patterns on a surface of a composition based on hydraulic binder, comprising the application by printing of a deactivating composition (D1) or acid (A1) on part or all of a surface of a composition based on hydraulic binder.
- composition based on hydraulic binder used in the process according to the invention may be in the form of a molded part or an unmolded part.
- the method according to the invention does not require stencil or membrane. There is therefore no prior step of preparing a stencil or a printed membrane. In addition, once the process implemented, there is no waste to eliminate.
- the method provides access to an unlimited number of pattern shapes and patterns of complex shapes.
- the method can be used for any type of hydraulic binder-based compositions, and regardless of the shape of the part formed by the hydraulic binder-based composition, including for a part whose surface to be deactivated is not flat, as detailed below.
- hydraulic binder is understood to mean 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 can comprise or consist of a cement according to the EN 197-1 standard and in particular a CEM I, CEM II, CEM III, CEM IV or CEM V type cement according to the NF EN 197-1 (2012) cement standard.
- the cement can therefore in particular comprise mineral additions.
- composition based on hydraulic binder means a composition comprising a hydraulic binder. It may be a composition based on fresh hydraulic binder, which then corresponds to a “hydraulic binder composition”, or a composition based on hardened hydraulic binder, such as concrete.
- freshness refers to such hydraulic binder-based compositions when they have been tempered with water, but have not yet hardened. It is then malleable enough to fill the mold or formwork.
- hardened is understood to mean such hydraulic binder-based compositions when cured.
- setting is meant the passage to the solid state by hydration reaction of the binder.
- crete is meant a mixture of hydraulic binders, aggregates, sands, water, optionally additives, and possibly mineral additions.
- cement also includes mortars and screeds.
- the term "mineral additions” refers to slags (as defined in NF Cement Standard EN 197-1 (2012) section 5.2.2), steelmaking slags, pozzolanic materials (as defined in NF Cement Standard). EN 197-1 paragraph 5.2.3), fly ash (as defined in standard Cement NF EN 197-1 paragraph 5.2.4), calcined schists (as defined in standard Cement NF EN 197-1 paragraph 5.2 .5), limestones (as defined in standard Cement NF EN 197-1 paragraph 5.2.6) or even fumes of silicas (as defined in standard Cement NF EN 197-1 paragraph 5.2.7) or their mixtures.
- aggregates is meant a set of mineral grains with a mean diameter of between 0 and 125 mm. Depending on their diameter, aggregates are classified into one of six families: fillers, sand, sand, gravels, chippings and ballast (standard XP P 18-545 of September 201 1).
- the most widely used aggregates are the following: fillers, which have a diameter of less than 2 mm and for which at least 85% of the aggregates have a diameter less than 1.25 mm and at least 70% of the aggregates have a diameter less than 0.063 mm, sands with a diameter between 0 and 4 mm (in standard 13-242, diameter up to 6 mm), lobes with a diameter greater than 6.3 mm, gravel diameters between 2 and mm and 63 mm. Sand is therefore included in the definition of granulate according to the invention.
- the fillers may in particular be of calcareous, siliceous or dolomitic origin.
- a deactivating (D1) or acid (A1) composition is applied to part or all of a surface of the hydraulic binder composition by printing.
- Both the deactivating (D1) and acid (A1) printing compositions are capable of etching / digging the hydraulic binder composition to form patterns.
- the patterns are created by removing a portion of the hydraulic binder composition. Patterns are not created by adding material to the hydraulic binder composition.
- the deactivating (D1) or acid (A1) composition is applied to a portion of the surface of the hydraulic binder composition.
- the application step can be performed by printing a deactivating (D1) or acid (A1) composition on a first part of the surface. of the hydraulic binder composition, then repeat this step for each part, which allows to create each pattern of the aisle one after the other.
- the printer is placed where a pattern is desired, then, after printing, moved to the next location where a pattern is desired, and repeated as many times as necessary.
- (A1) is applied by printing.
- this composition is the printing ink.
- the printing is carried out by an ink jet printer.
- a PolyJet printer (Stratasys company) can be used.
- the print head of the inkjet printer expels a jet / droplets of deactivating composition (D1) (or possibly another deactivating composition, for example a deactivating composition (D2) or (D3) described hereinafter) or of acid composition (A1) (or optionally of another acid composition, for example of an acid composition (A2) or (A3) described hereinafter) .
- the jet forms dots on the surface of the hydraulic binder composition.
- the patterns are formed by dot concentrations.
- the diameter of the expelled jet / expelled droplets is controllable, which makes it possible to control the resolution of the printing, the amount of deactivating composition (D1) or acid (A1 ) deposited at a given location on the surface, and thus digs at a given location.
- the hollow refers to a given area of the surface of the composition based on hydraulic binder. Indeed, the surface of the composition based on hydraulic binder may have different digs, as explained below.
- the droplet / jet diameter is a compromise between the definition of patterns, the desired hollow and the speed of printing.
- the diameter of the expelled droplets can be measured by laser diffraction, for example with a Malvern Spraytec apparatus.
- droplets have a diameter measured by laser diffraction between 1 ⁇ and 1000 ⁇ , for example between 2 ⁇ and 500 ⁇ .
- PolyJet printers (Stratasys company) make it possible to achieve these droplet sizes even for viscous liquids.
- the desired precision of the position of the pattern is of the order of a few hundred microns.
- the surface of the hydraulic binder composition is planar.
- the printing can then be performed with a printer to control the location of the application of the deactivating composition (D1) or acid (A1) in two dimensions.
- the printing is then performed by a conventional printer that allows to apply a controlled amount of printing ink at a point of coordinates (X, Y) controlled.
- the surface of the hydraulic binder composition is not planar.
- the printing can then be performed with a printer to control the location of the application of the deactivating composition (D1) or acid (A1) in three dimensions.
- the printing is then performed by a printer which makes it possible to apply a controlled quantity of printing ink at a controlled coordinate point (X, Y, Z).
- Such an impression is not necessarily a "3D printing" in the usual sense of the term, because in this embodiment of the method according to the invention, the application of the deactivating composition (D1) or acid (A1) is not an additive manufacturing process (we do not form a new object).
- printing can be done by a 3D printer.
- the method comprises the application by printing of a deactivating composition (D1) on part or all of a surface of a composition based on fresh hydraulic binder.
- D1 deactivating composition
- the method according to the invention generally comprises, before the step of applying by printing the deactivating composition (D1) on the composition based on fresh hydraulic binder, a step of shaping the composition based on hydraulic binder. fresh.
- the shaping is performed by casting, float and if necessary by vibration.
- Bubbles and / or air lenses may form on the surface of the fresh hydraulic binder composition. They come from the upwelling of the composition based on fresh hydraulic binder. Air bubbles can be very difficult to remove even by smoothing the surface and impart an unsightly appearance to the hardened surface. To limit this phenomenon, the composition based on fresh hydraulic binder is advantageously floated before application of the deactivating composition (D1).
- the process according to the invention makes it possible to limit the appearance of unsightly bubbles or air lenses on the surface of the composition based on hydraulic binder than the processes of the prior art using a stencil or a membrane. , especially those described above. Indeed, in these processes, bubbles may form at the interface between the surface of the fresh hydraulic binder composition and the stencil or membrane.
- the shaping of the composition based on fresh hydraulic binder is performed by 3D printing (by an additive manufacturing process).
- the method then comprises a step of shaping the composition based on fresh hydraulic binder by a 3D printer, and a step of application by the 3D printer of the deactivating composition (D1) on a part of the surface of the composition based on fresh hydraulic binder.
- the shaping step and the application step of the deactivating composition (D1) can be successive or simultaneous.
- the method comprises the application by printing of a deactivating composition (D1) on part or all of a surface of a composition based on fresh hydraulic binder, then another application. by printing the deactivating composition (D1) on a part of the surface on which of the deactivating composition (D1) has been applied, this other application possibly being repeatable.
- This first embodiment makes it possible to apply different amounts of deactivating composition (D1) to different parts of the surface of the fresh hydraulic binder-based composition which it is desired to deactivate. Typically, successive passes of the printhead of the printer are performed on the part (s) of the surface for which a deeper hollow is desired. The greater the amount of deactivating composition (D1), the deeper the resulting hollow will be.
- the deactivating composition (D1) is applied once to a first part of the surface, and more than once (typically twice) to a second part of the surface. Similarly, to obtain a pattern with three levels of deactivation, for example, the deactivating composition (D1) is applied once to a first portion of the surface, twice to a second portion of the surface, and three times to a third part of the surface.
- the method may comprise, between two successive applications of deactivating composition (D1), an accelerated drying step of the part of the surface on which the other application will be carried out.
- This drying can be carried out under UV or infrared light. It allows faster preparation and a sharper outline of the different levels of the pattern.
- the method comprises applying by printing a deactivating composition (D1) on part or all of a surface of a composition based on fresh hydraulic binder, and then applying by printing a deactivating composition (D2) on part or all of the surface of the fresh hydraulic binder composition, it being understood that the deactivating compositions (D1) and (D2) have off-axis forces different and are not applied to identical surfaces.
- the fact that the deactivating compositions (D1) and (D2) are not applied to identical surfaces does not exclude that the surface on which the deactivating composition (D1) is applied is included in the surface on which the deactivating composition (D2) is applied, or vice versa.
- the fact that the deactivating compositions (D1) and (D2) are not applied to identical surfaces does not exclude that the deactivating compositions (D1) and (D2) are applied to surfaces which are overlap.
- a pattern with three levels of deactivation will be obtained: a first part of the pattern with a first level of hollow on which only the deactivating composition (D1) has been applied, a second part of the pattern with a second level of hollow on which only the deactivating composition (D2) has been applied, and a third part of the pattern with a third level of hollow on which the deactivating compositions (D1) and ( D2) have been applied.
- the method comprises applying by printing a deactivating composition (D1) to a portion or to an entire surface of a binder-based composition. cool hydraulic, then applying by printing a deactivating composition (D2) on part or all of the surface of the fresh hydraulic binder composition, and then applying by printing a deactivating composition (D3) on part or all of the surface of the fresh hydraulic binder composition, it being understood that the deactivating compositions (D1), (D2) and (D3) have different digging forces and are not not applied to identical surfaces.
- each deactivator composition (D1), (D2) and (D3) corresponds to the ink of an ink cartridge of the printer.
- the deactivating compositions (D1), (D2) and (D3) comprise a surface setting retarder. They may be in the form of a solution in an aqueous or oily solvent or in a petroleum fraction, or in the form of a dispersion in an aqueous or oily solvent or in a petroleum fraction, in particular in the form of a suspension or in the form of an emulsion.
- a surface setting retarder is intended to mean a compound having the effect of delaying the setting of the composition based on hydraulic binder, that is to say of delaying or inhibiting the related phenomena such as hydration phenomena, thereby inducing a later hardening of the composition.
- a surface-setting retarder delays the setting time of a composition based on hydraulic binder in which it has been introduced at a dosage of at most 5% by dry weight relative to the weight of said hydraulic binder, setting time being measured according to test EN480-2 (2006).
- setting time is delayed by at least 30 minutes with respect to a control hydraulic binder composition.
- oil a solvent comprising fats of vegetable origin, animal or mineral, which may be liquid at room temperature or not. These oils can be recycled or regenerated. However, when they are not liquid at room temperature, the composition is preferably prepared at a temperature at which all its components are liquid.
- the vegetable oil may especially be chosen from rapeseed oil, palm oil, coconut oil, castor oil, peanut oil, grape seed oil, corn oil, canola oil, linseed oil, coconut oil, soybean oil, sunflower oil and mixtures thereof.
- the animal oils can be chosen in particular from tallow, suintine, lard oil, herring oil, cod liver oil, sardine oil, fish oil and oil. lanolin and mixtures thereof.
- the mineral oils may in particular be aliphatic, paraffinic or naphthenic oils, they include, in particular, the fractions comprising on average 8 to 30 carbon atoms, preferably 1 to 25 carbon atoms, alone or as a mixture, in particular mineral oil.
- the preferred oils will be mineral oils CnH2n + 2, with n between 8 and 19.
- emulsion denotes both water-in-oil emulsions and oil-in-water emulsions, the oil being chosen in particular from the oils mentioned above.
- the retarder of the deactivating composition (D1), (D2) and (D3) used in the process according to the invention is chosen from the compounds known for this purpose.
- the surface-setting retarder of the deactivating composition in aqueous solvent may be chosen from compounds known for this purpose, such as carboxylic acids, their salts and their derivatives; carbohydrates, especially sugars, their salts and derivatives; but also lignosulfonic acid, phosphonic acids, in particular those carrying amino or hydroxy groups, their salts and their derivatives; or inorganic acids such as phosphoric acid, their salts and derivatives.
- derivatives of carboxylic acids, carbohydrates, lignosulfonic acids, phosphonic acids, in particular those bearing amino or hydroxy groups; and inorganic acids also include the salts of these derivatives.
- the surface-setting retarder of the deactivating composition in aqueous solution is preferably selected from carboxylic acids, their salts and their derivatives; sugars, their salts and their derivatives; or a mixture thereof.
- the surface-setting retarder of the deactivating composition may be chosen in particular from glucose, fructose, sucrose, meritose, lactose, maltotriose, dextrose, maltose, galactose and mannose. , glycogen or one of their mixtures.
- carboxylic acids mention may in particular be made of maleic acid and hydroxycarboxylic acids and among these in particular citric acid, tartaric acid, malic acid, gluconic acid, and lactic acid, their salts or a mixture thereof.
- carboxylic acid salts mention may be made of sodium salts, calcium salts or potassium salts.
- carboxylic acid derivatives is intended to denote their salts and esters, by way of a particular example, mention may be made of ethyl acetate.
- the derivatives include lactones.
- the surface-setting retarder of the deactivating composition in oily solution may be chosen from the compounds known for this purpose, such as those disclosed in application EP 2 935 140, in particular the alkyl esters of hydroxycarboxylic acids which are soluble in oils / solvents. , or dispersible in oils / solvents. It is for example an alkyl ester of citric acid such as triethyl citrate.
- the retarder of the deactivating composition used in the emulsions may be chosen from the aqueous solvent retarders and the oily solvent retarders defined above.
- the retardant of the deactivating composition in solution in an emulsion may be chosen from carboxylic or hydroxycarboxylic acids which may comprise a saturated or unsaturated carbon chain and have 1, 2 or 3 hydroxyl groups, it may also be be in the form of a salt, especially sodium salt, potassium salt or calcium salt.
- the acid is preferably selected from acetic acid, gluconic acid, citric acid, tartaric acid, maleic acid, mixtures thereof or salts thereof. Particularly preferred are citric acid, malic acid and tartaric acid.
- the emulsion preferably comprises from 5 to 50% by weight of oily phase, preferably from 10 to 40% and from 50 to 95% by weight of aqueous phase, preferably from 60 to 90%.
- the deactivating composition further comprises a surfactant.
- the surfactant is preferably a non-quaternary amine surfactant. Such oil-in-water emulsions are described in application WO 2012/056162.
- the surface-setting retarder of the deactivating composition in solution in the petroleum fractions may be chosen from the aforementioned retarders for the phases aqueous or oily which are crushed and then dispersed within the oil cuts.
- the deactivating composition (D1), (D2) or (D3) generally comprises from 0.1 to 20% by weight of surface setting retarder.
- the proportions of retarding agent in the deactivating composition (D1), (D2) or (D3) are adapted so that the surface setting retarder is in a proportion from 0.01 to 100 g / m 2 , preferably from 0.1 to 10 g / m 2 , more preferably from 0.5 to 5 g / m 2 relative to the jet section.
- the deactivating compositions (D1), (D2) and optionally (D3) if a deactivating composition (D3) is used have the same type of formulation (for example liquids, or water-in-oil emulsions, or emulsions oil in water) and / or include solvents of the same nature, for example water, or an oil of the same kind, or a petroleum cut.
- a deactivating composition (D3) have the same type of formulation (for example liquids, or water-in-oil emulsions, or emulsions oil in water) and / or include solvents of the same nature, for example water, or an oil of the same kind, or a petroleum cut.
- the deactivating compositions (D1), (D2) and (D3) have different hollow forces.
- This different digging force can be achieved by using an identical surface setting retarder in the deactivating compositions, but at a different concentration (generally, the higher the surface setting retardation concentration in the deactivating composition, the greater the hollow force is high).
- This different digging force can also be obtained by using deactivating compositions comprising surface-setting retardants of different natures and having different digging forces.
- the deactivating compositions (D1), (D2) and optionally (D3) if a deactivating composition (D3) is used then differ only in the nature of the retarder, and possibly by the nature of the possible additives.
- the deactivating compositions (D1), (D2) and / or (D3) may optionally contain additives making it possible to improve its properties chosen from fillers, opacifying agents, anti-foam agents, surfactants, agents and curing agents, biocides, thickeners, pigments, wetting agents (to improve the regularity of the application of the deactivating composition (D1) to the surface), plasticizers, film-forming agents, dispersants, viscosity regulating agents (especially for net deposition of the droplet during printing, without spreading or shrinking), antioxidants (in particular to prevent the decomposition of the surface-setting retarder, in particular in case of local drying forced) or a mixture of these.
- additives making it possible to improve its properties chosen from fillers, opacifying agents, anti-foam agents, surfactants, agents and curing agents, biocides, thickeners, pigments, wetting agents (to improve the regularity of the application of the deactivating composition (D1) to the surface), plasticizers, film-forming agents
- the deactivating composition may comprise a viscosity regulating agent to adjust the rheological properties of the deactivating composition. used to allow easy application by printing.
- the deactivating (D1) and / or (D2) and / or (D3) composition has a Brookfield viscosity of less than 500 mPa.s measured at 20 ° C.
- these viscosity-regulating agents are present in the deactivating composition at contents not exceeding 15% by weight, and preferably not exceeding 10% by weight.
- the deactivating composition may also include a curing agent.
- the curing agents are chosen in particular from vegetable oils, animal oils or mineral oils such as those described above.
- the curing agents may also be chosen from solubilized resins in a solvent as described in application FR 2 828 192, styrene-butadiene latices, aqueous emulsions of acrylic resin as described in patent application EP 1 661 874, paraffinic emulsions, acrylic polymers. They may also be chosen from emulsions of paraffin waxes (paraffins of petroleum, synthetic or vegetable origin).
- the deactivating composition (D1) In order to allow time for the operator to imprint the deactivating composition (D1) on part or all of a surface of the fresh hydraulic binder composition, it may be necessary to delay the setting. of the composition based on hydraulic binder and / or to increase its workability or open time.
- open time is understood to mean the time during which the composition based on hydraulic binder is manipulable, that is to say the time during which the spreading or settling of the cementitious composition is greater than 50% of the initial value, this value being measured by the slump height at the Abrams cone according to the French standard NF EN12350-2 (2012) or by the cone spreading of Abrams according to the NF standard EN12350-8 (2010).
- the composition based on fresh hydraulic binder can thus advantageously have an open time of at least 30 minutes, preferably 30 minutes to 4 hours.
- the set retardation and / or the increase of its workability can be brought about by the use of a retarding and / or fluidifying additive in the composition based on fresh hydraulic binder.
- the composition based on fresh hydraulic binder may further comprise at least one retarding additive and / or fluidifying.
- the retarding and / or fluidifying additives may be any additive known to those skilled in the art and fulfilling this function.
- the term "retarding additive” is understood to mean a compound having the effect of delaying the setting of the composition based on hydraulic binder, that is to say of delaying or inhibiting the phenomena related to this setting. such as phenomena of hydration, thereby inducing a later hardening of the composition.
- a retarding additive delays the setting time of a composition based on hydraulic binder in which it has been introduced at a dosage of at most 5% by dry weight relative to the weight of said hydraulic binder, the time of taken being measured according to test EN480-2 (2006).
- setting time is delayed by at least 30 minutes with respect to a control hydraulic binder composition.
- fluidizing additive also called “water-reducing additive” an additive to reduce the amount of water required for the production of a composition based on hydraulic binder.
- the retarding and / or fluidifying additive may be chosen from the family of comb-structure polymers, compounds comprising a polyalkoxylated chain and at least one amino-alkylene phosphonic group, gluconic acid, sugars, lignosulfonic acid, polynaphthalene sulfonic acid, polymelamine sulfonic acid and their salts, alone or in admixture.
- the comb structure polymers are especially chosen from polycarboxylate main chain comb copolymers bearing grafted side chains of polyalkylene oxide (or PCP).
- the compounds comprising a polyalkoxylated chain and at least one amino-alkylene phosphonic group may be chosen from the compounds of formula (I):
- R is a hydrogen atom or a monovalent hydrocarbon group having from 1 to 18 carbon atoms and optionally one or more heteroatoms;
- the R are similar or different from each other and represent an alkylene such as ethylene, propylene, butylene, amylene, octylene or cyclohexene, or an arylene such as styrene or methylstyrene, the R, optionally contain one or more heteroatoms;
- Q is a hydrocarbon group having 2 to 18 carbon atoms and optionally one or more heteroatoms
- A is an alkylidene group having 1 to 5 carbon atoms
- the R j are similar or different from each other and can be chosen from: the group A-P0 3 H 2 , A having the abovementioned meaning,
- alkyl group comprising from 1 to 18 carbon atoms and capable of bearing [R-O (R 1 -O) n ], R and R groups, having the abovementioned meanings,
- R k denotes a group such that R j , preferably R k is selected from a group A-P0 3 H 2 , A having the meaning mentioned above; and an alkyl group having from 1 to 18 carbon atoms and capable of bearing [R-O (R 1 -O) n ], R and R groups, having the abovementioned meanings;
- B denotes an alkylene group containing from 2 to 18 carbon atoms
- n is a number greater than or equal to 0
- r is the number of groups [R-0 (Ri-0) n ] carried by the set of R ,
- Q, N and R j may together form one or more rings, which ring (s) may further contain one or more other heteroatoms.
- a polyalkoxylated polyphosphonate consisting of a water-soluble or water-dispersible organic compound having at least one amino-di- (alkylene-phosphonic) group and at least one polyoxyalkylated chain or at least one of its salts.
- R is a methyl group
- the R are ethylene and propylene groups, not being between 30 and 50
- r + q is 1
- Q is an ethylene group
- A is a methylene group
- y is 1
- R j is CH2-PO 3 H 2 .
- the sugars may be selected from glucose, fructose, sucrose, meritose, lactose, maltotriose, dextrose, maltose, galactose, mannose, glycogen, or a mixture thereof.
- the retarding and / or fluidizing additive may preferably be chosen from polycarboxylate main chain comb copolymers bearing polyalkyleneoxide (or PCP) grafted side chains or the compounds of formula (I), or their mixture.
- the content of retarding and / or fluidifying additive in the composition based on fresh hydraulic binder is from 0.2 to 3% by dry weight relative to the weight of fresh hydraulic binder.
- the process generally comprises a step of curing the fresh hydraulic binder composition. then a step of removing the surface uncured hydraulic binder layer. This last step makes it possible to reveal the aggregates on the surface of the composition based on hydraulic binder and to make the pattern appear. It is typically carried out by washing with water jet, generally under high pressure, or by brushing.
- the hardening step of the composition based on fresh hydraulic binder generally lasts from 8 to 24 hours.
- the method comprises applying by printing an acid composition (A1) on part or all of a surface of a cured hydraulic binder composition.
- the process according to the invention generally comprises, before the step of applying by printing the acid composition (A1) on the cured hydraulic binder-based composition, a step of shaping a composition based on fresh hydraulic binder, followed by a step of curing the fresh hydraulic binder composition to obtain the cured hydraulic binder composition.
- the shaping of the composition based on fresh hydraulic binder can be achieved by casting, floatation and if necessary, by vibration, or by 3D printing (by an additive manufacturing process).
- the method comprises the application by printing of an acid composition (A1) on part or all of a surface of a composition based on hardened hydraulic binder, then another printing application of the acid composition (A1) to a part of the surface on which the acid composition (A1) has been applied, this other application possibly being to be repeated.
- This first embodiment makes it possible to apply different amounts of acid composition (A1) to different parts of the surface of the cured hydraulic binder-based composition which it is desired to deactivate. Typically, successive passes of the printhead of the printer are performed on the part (s) of the surface for which a deeper hollow is desired. The greater the amount of acid composition (A1), the deeper the resulting hollow will be.
- the acid composition (A1) is applied once to a first part of the surface, and more than once (typically twice) to a second part of the surface. area.
- the acid composition (A1) is applied once to a first portion of the surface, twice to a second portion of the surface, and three times on a third part of the surface.
- the method may comprise, between two successive applications of acid composition (A1), an accelerated drying step of the part of the surface on which the other application will be carried out.
- This drying can be carried out under UV or infrared light. It allows faster preparation and a sharper outline of the different levels of the pattern.
- the method comprises applying by printing an acid composition (A1) on part or all of a surface of a cured hydraulic binder composition, and then printing application of an acid composition (A2) to a portion or the entire surface of the cured hydraulic binder composition, it being understood that the acid compositions (A1) and (A2) have different hollow forces and are not applied to identical surfaces.
- the fact that the acid compositions (A1) and (A2) are not applied to identical surfaces does not exclude that the surface on which the acid composition (A1) is applied is included in the surface on which the acid composition (A2) is applied, or vice versa.
- the fact that the acid compositions (A1) and (A2) are not applied to identical surfaces does not exclude that the acid compositions (A1) and (A2) are applied to surfaces overlapping.
- a pattern with three levels of deactivation will be obtained: a first part of the pattern with a first level of hollow on which only the acid composition (A1) has been applied, a second part of the pattern with a second a level of digestion on which only the acid composition (A2) has been applied, and a third part of the pattern with a third level of hollow on which the acid compositions (A1) and (A2) were applied.
- the method comprises applying by printing an acid composition (A1) on part or all of a surface of a composition based on hardened hydraulic binder, then applying by printing an acid composition (A2) on part or all of the surface of the cured hydraulic binder composition, and then applying by printing a composition of acid (A3) on part or all of the surface of the cured hydraulic binder composition, it being understood that the acid compositions (A1), (A2) and (A3) have off-axis forces different and are not applied to identical surfaces.
- each acid composition (A1), (A2) and (A3) corresponds to the ink of an ink cartridge of the printer.
- the acid compositions (A1), (A2) and (A3) comprise an acid. They may be in the form of a solution in an aqueous or oily solvent or in a petroleum fraction, or in the form of a dispersion in an aqueous or oily solvent or in a petroleum fraction, in particular in the form of a suspension or in the form of an emulsion.
- the acid compositions (A1), (A2) and optionally (A3) if an acid composition (A3) is used have the same type of formulation (for example liquids, or water-in-oil emulsions). or oil-in-water emulsions) and / or comprise solvents of the same kind, for example water, or an oil of the same kind, or a petroleum cut.
- each acid composition (A1), (A2) and (A3) is an aqueous solution of one or more acids.
- acid refers to a compound whose pK a at 25 ° C is less than or equal to 6.
- the acid can be an acid:
- Inorganic preferably selected from hydrochloric acid (also called muriatic acid), sulfamic acid (HOSO 2 NH 2 ), phosphoric acid and nitric acid,
- organic preferably a carboxylic acid, an amino acid hydrochloride, preferably glycine hydrochloride (HOOC-CH 2 -NH 3 + , OI), or an alkylsulfonic acid, preferably methanesulfonic acid.
- amino acid hydrochloride preferably glycine hydrochloride (HOOC-CH 2 -NH 3 + , OI)
- alkylsulfonic acid preferably methanesulfonic acid.
- the acid may be a strong acid (hydrochloric acid, sulphamic acid, nitric acid, methanesulphonic acid) or weak (phosphoric acid, carboxylic acid, hydrochloride of glycine).
- the acid composition may comprise a mixture of several acids.
- the acid composition may comprise as glycine hydrochloride acid, for example, the composition consisting essentially of glycine hydrochloride as described in WO 2012/075091 A2.
- the carboxylic acid may comprise a saturated or unsaturated carbon chain, preferably from 1 to 6 carbon atoms, for example from 1 to 3 (the carbon of the COOH of the carboxylic acid not being counted). It may comprise one, two or three carboxylic acid groups.
- the carboxylic acid may be a hydroxycarboxylic acid, which typically comprises one, two, three or more hydroxyl groups.
- the pK a (or a pK a thereof ) of the carboxylic acid is from 2 to 6. It may especially be chosen from the group consisting of glycolic acid, citric acid and tartaric acid. , malic acid, lactic acid, acetic acid and mixtures thereof. Citric acid, tartaric acid and malic acid are preferred.
- the acid composition (A1), (A2) or (A3) generally comprises from 1 to 50% by weight of acid.
- the proportions of acid in the acid composition (A1), (A2) or (A3) are adapted so that the acid is in a proportion of 0, 1 to 500 g / m 2 , preferably from 0.1 to 100 g / m 2 , more preferably from 0.5 to 50 g / m 2 relative to the jet section.
- the acid compositions (A1), (A2) and (A3) have different hollow forces.
- This different digging force can be achieved by using an identical acid in the acid compositions, but at a different concentration (generally, the higher the acid concentration in the acid composition, the higher its digging force is) .
- concentration generally, the higher the acid concentration in the acid composition, the higher its digging force is
- the lower the pH of the acid composition the greater its digging force is important.
- This different digging force can also be obtained by using acid compositions comprising acids of different natures and having different digging forces.
- the acid compositions (A1), (A2) and optionally (A3) if an acid composition (A3) is used then differ only in the nature of the acid, and possibly in the nature of the acids. possible additives.
- a strong acid (A1) is used to carry out the part of the pattern with the deepest hollow and a weak acid (A2) to achieve the part of the pattern with the shallower hollow.
- the acid compositions (A1), (A2) and / or (A3) may optionally contain additives making it possible to improve its properties chosen from fillers, opacifying agents, anti-foam agents, surfactants, biocides, thickeners, pigments, wetting agents (to improve the regularity of the application of the acid composition (A1) to the surface), plasticizers, film-forming agents, dispersants, viscosity control agents (in particular for net deposition of the droplet during printing, without spreading or retraction), antioxidants (especially to prevent acid decomposition, especially in case of forced local drying) or a mixture thereof.
- additives making it possible to improve its properties chosen from fillers, opacifying agents, anti-foam agents, surfactants, biocides, thickeners, pigments, wetting agents (to improve the regularity of the application of the acid composition (A1) to the surface), plasticizers, film-forming agents, dispersants, viscosity control agents (in particular for net deposition of the droplet during printing, without spreading
- the acid composition may comprise a viscosity regulating agent to control the rheological properties of the acid composition used so as to allow easy application by printing.
- the acid composition (A1) and / or (A2) and / or (A3) has a Brookfield dynamic viscosity of less than 500 mPa.s measured at 20 ° C.
- these viscosity regulating agents are present in the acid composition at levels not exceeding 15% by weight, and preferably not exceeding 10% by weight.
- the acid composition may include an antifoam agent to control the foam generated upon application of the acid.
- This antifoaming agent may be based on oil, siloxane, silicone or alkoxylated fatty alcohols.
- the process After printing the acid composition (A1) on part or all of a surface of the cured hydraulic binder composition, the process generally comprises a step of rinsing the hydraulic binder composition hardened.
- Rinsing makes it possible to eliminate the acid and also the deposits of composition based on hydraulic binder which has been attacked on the surface, which makes apparent the aggregates on the surface of the composition based on hydraulic binder and thus the pattern. It is typically carried out by washing with water jet, preferably under high pressure. Generally, a few minutes are expected, typically between 5 and 60 minutes before rinsing so that the acid composition has time to attack the surface of the hydraulic binder composition.
- the diameter of the jet (or droplets) of the inkjet printer (the larger the diameter, the greater the amount of deactivating composition (D1) or acid (A1) applied, and the larger the hollow is important), and / or
- the surface of the composition based on hydraulic binder may have different digs depending on the location.
- the patterns may in particular be created by making the aggregates (or some aggregates) of the hydraulic binder composition apparent.
- the amount of deactivating composition (D1) or acid (A1) applied and / or the hollow force of the deactivating composition (D1) or of acid (A1) are then adapted so that at least one of the hollow is smaller than the bottom dimension of the granulate of the hydraulic binder-based composition that is to be made apparent, wherein the lower dimension of the aggregate is measured by sieve size analysis.
- the amount of deactivating composition (D1) or acid (A1) applied can be adapted by adapting the size of the jet / droplets of the printer and / or by making successive passes of the print head of the printer. printer as described above.
- the amount of deactivating (D1) or acid (A1) composition applied and / or the digging force of the deactivating (D1) or acid (A1) composition are adapted so that at least one of hollow at least 2 times lower, in particular at least 5 times lower, for example at least 10 times lower than the lower dimension of the granulate of the composition based on hydraulic binder that is to be made apparent, where the dimension The bottom of the granulate is measured by sieve analysis.
- the desired hollow is smaller than the lower dimension of this granulometric fraction of the granules of the composition based on hydraulic binder, where the smaller size of the granulometric distribution of aggregates is measured by sieve analysis.
- the hollow is at least 2 times smaller, especially at least 5 times smaller, for example at least 10 times smaller than the smaller dimension of the finest aggregate of the composition based on hydraulic binder.
- Table 1 Particle size distribution of standardized sand from SNL
- a hollow less than or equal to 10 times 1 mm, or less than or equal to 100 ⁇ would therefore be particularly preferred.
- Patterns can also be created by placing the hydraulic binder composition on a different color substrate.
- the hydraulic binder-based composition is on a substrate whose color is different from that of the hydraulic binder-based composition, and the amount of deactivating (D1) or acid (A1) composition. ) applied and / or the hollow force of the deactivating composition (D1) or acid (A1) are adapted so that at least one of the hollow is greater than or equal to the thickness of the composition based on hydraulic binder .
- thickness of the hydraulic binder composition is meant the distance between the surface of the substrate on which the binder composition is placed and the surface of the hydraulic binder composition.
- the hydraulic binder composition When the hollow is greater than or equal to the thickness of the hydraulic binder composition, the hydraulic binder composition is removed in a localized manner throughout its thickness to the substrate. After rinsing, the surface portions to which the deactivating (D1) or acid (A1) composition has been applied form patterns whose color will be that of the substrate, while the remainder of the surface will be of the color of the composition based on hydraulic binder.
- the substrate may in particular be a second composition based on hydraulic binder, the color of which is different from that of the composition based on hydraulic binder on which the deactivating composition (D1) or acid (A1) is applied. It is usual to introduce one or more pigments in a composition based on hydraulic binder to give it a desired color.
- a dark gray concrete (as a substrate) can be coated with a light gray, fresh hydraulic binder-based composition to a thickness of 1 to 5 mm, and then applied by printing a deactivating composition ( D1) on a portion of the surface of the cool light gray hydraulic binder composition so that the hollow is greater than or equal to the thickness of the fresh hydraulic binder composition. After rinsing, the surface portions to which the deactivating composition (D1) has been applied will form dark gray patterns, while the remainder of the surface will be light gray.
- At least one of the hollow is greater than or equal to the thickness of the composition based on hydraulic binder.
- a first hollow greater than or equal to the thickness of the composition based on hydraulic binder in order to make the substrate (and therefore its color) apparent
- a first hollow greater than or equal to the thickness of the composition based on hydraulic binder makes apparent after rinsing dark gray patterns
- a second hollow less than the lower dimension of the granulate of the composition based on hydraulic binder that is to be made apparent makes it possible to form light gray patterns in which the aggregates of the composition based on hydraulic binder are apparent, - if there are other areas of the surface where no deactivating composition has been applied, the surface is light gray and the aggregates are not visible.
- both alternatives are implemented one after the other.
- the process then comprises:
- the deactivating composition (D1) and the acid composition (A1) can be applied to the same or different surface parts.
- the composition based on hydraulic binder may undergo, before or during the creation of the pattern, all or part of its surface, an aesthetic treatment to protect it and / or to color it. It may for example, during the creation of the pattern, on all or part of the surface, undergo a mineralizing treatment (or hardener), in particular to induce coloring. It may also, after creating the pattern, on all or part of its surface, be covered with a protective product.
- the protective product is typically applied to the cured compositions for the purpose of protecting it, in particular from external aggression. Such products are known to those skilled in the art.
- the surface treated and / or covered may be both the surface of the areas intended to produce the pattern or the surface of the areas having the pattern, as the surrounding areas.
- the surface may also, after creating the patterns undergo mechanical treatments known to those skilled in the art such as polishing, sandblasting ...
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1557420A FR3039541B1 (fr) | 2015-07-31 | 2015-07-31 | Procede de creation de motifs sur la surface d'une composition a base de liant hydraulique par impression |
PCT/EP2016/068075 WO2017021284A1 (fr) | 2015-07-31 | 2016-07-28 | Procédé de création de motifs sur la surface d'une composition à base de liant hydraulique par impression |
Publications (1)
Publication Number | Publication Date |
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EP3328815A1 true EP3328815A1 (fr) | 2018-06-06 |
Family
ID=54207562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16745701.9A Withdrawn EP3328815A1 (fr) | 2015-07-31 | 2016-07-28 | Procédé de création de motifs sur la surface d'une composition à base de liant hydraulique par impression |
Country Status (6)
Country | Link |
---|---|
US (1) | US20180215673A1 (fr) |
EP (1) | EP3328815A1 (fr) |
CA (1) | CA2994197A1 (fr) |
FR (1) | FR3039541B1 (fr) |
WO (1) | WO2017021284A1 (fr) |
ZA (1) | ZA201800662B (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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RU175309U9 (ru) * | 2017-03-22 | 2018-01-31 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный медицинский университет им. В.И. Разумовского" Министерства здравоохранения Российской Федерации (ФГБОУ ВО Саратовский ГМУ им. В.И. Разумовского Минздрава России) | Обучающая динамическая модель робота-симулятора младенца |
DE102017005280B4 (de) * | 2017-06-02 | 2021-02-11 | Metten Stein + Design Gmbh & Co. Kg | Verfahren zur Herstellung eines bedruckten Betonelements |
US20220152869A1 (en) * | 2019-01-15 | 2022-05-19 | Construction Research & Technology Gmbh | A method of making molded parts having smooth surface and molded parts made thereof |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2696736B1 (fr) | 1992-10-12 | 1994-12-30 | Chryso | Fluidifiants pour suspensions aqueuses de particules minérales et pâtes de liant hydraulique. |
FI990326A0 (fi) * | 1999-02-17 | 1999-02-17 | Janne Samuli Naamanka | Menetelmä kuvioidun betonipinnan aikaansaamiseksi |
FR2828192B1 (fr) | 2001-08-01 | 2004-01-23 | Francais Ciments | Composition desactivante de surface de beton ou mortier et son procede d'application |
EP1661874A1 (fr) | 2004-11-25 | 2006-05-31 | Sika Technology AG | Composition désactivante de surface pour béton ou mortier comprenant un tensio-actif non ionique. |
US7614820B2 (en) | 2006-04-07 | 2009-11-10 | Lithocrete, Inc. | Non-slick surface-seeded aggregate concrete and method of forming |
FR2966454B1 (fr) | 2010-10-26 | 2014-06-13 | Chryso | Desactivant de surface eliminable a sec |
US8853446B2 (en) | 2010-11-30 | 2014-10-07 | Green Products & Technologies, L.L.C. | Synthetic acid and associated methods |
FR2992961B1 (fr) * | 2012-07-04 | 2014-08-29 | Chryso | Procede de creation de motifs sur une surface en beton |
US20150291862A1 (en) | 2012-12-21 | 2015-10-15 | Dow Global Technologies Llc | Non-isocyanate sealant for glass sealing |
-
2015
- 2015-07-31 FR FR1557420A patent/FR3039541B1/fr not_active Expired - Fee Related
-
2016
- 2016-07-28 US US15/749,081 patent/US20180215673A1/en not_active Abandoned
- 2016-07-28 WO PCT/EP2016/068075 patent/WO2017021284A1/fr active Application Filing
- 2016-07-28 CA CA2994197A patent/CA2994197A1/fr not_active Abandoned
- 2016-07-28 EP EP16745701.9A patent/EP3328815A1/fr not_active Withdrawn
-
2018
- 2018-01-31 ZA ZA2018/00662A patent/ZA201800662B/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA201800662B (en) | 2019-02-27 |
FR3039541B1 (fr) | 2017-09-08 |
US20180215673A1 (en) | 2018-08-02 |
FR3039541A1 (fr) | 2017-02-03 |
CA2994197A1 (fr) | 2017-02-09 |
WO2017021284A1 (fr) | 2017-02-09 |
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