CN109503061B - Preparation method of concrete brick capable of being printed in color - Google Patents
Preparation method of concrete brick capable of being printed in color Download PDFInfo
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- CN109503061B CN109503061B CN201811131807.3A CN201811131807A CN109503061B CN 109503061 B CN109503061 B CN 109503061B CN 201811131807 A CN201811131807 A CN 201811131807A CN 109503061 B CN109503061 B CN 109503061B
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- 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
- C04B28/04—Portland cements
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- 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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
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- 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
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0046—Machines or methods for applying the material to surfaces to form a permanent layer thereon to plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/14—Printing or colouring
- B32B38/145—Printing
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- 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
- C04B28/06—Aluminous cements
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- 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
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- C04B28/34—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 cold phosphate binders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
- B32B2419/02—Bricks
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of a concrete brick capable of being printed in color, which comprises the following steps: 1) printing the image to be printed on the bottom layer of the bottom die through a printer; 2) placing the bottom die on a workbench, and pouring resin on the surface layer of the bottom die; 3) preparing the following raw materials in percentage by weight: cement, admixture, high-efficiency water reducing agent, color pigment, water-retaining agent, thickening agent, fiber and aggregate; 4) pouring the concrete slurry obtained in the step 3) onto the bottom die obtained in the step 2, vibrating for compacting, curing and demolding. The preparation method of the concrete brick capable of being printed in colors, disclosed by the invention, has the advantages of variable patterns and good design feeling.
Description
Technical Field
The invention relates to the field of building materials, in particular to a preparation method of a concrete brick capable of being printed in color.
Background
Concrete is a general term for engineering composite materials in which aggregate is cemented into a whole by a cementing material. The term concrete generally refers to cement as a cementing material and sand and stone as aggregate; the cement concrete, also called as common concrete, is obtained by mixing with water (which may contain additives and admixtures) according to a certain proportion and stirring, and is widely applied to civil engineering.
Along with the improvement of living standard of people, in addition to the higher requirements on the performances of bricks and plates, the technicians in the field also take the enrichment and the change of patterns and colors on the ultrahigh-performance concrete plates as a new research direction.
The patterns and designs of conventional boards are too simple compared with images printed by color printers, and are poor in picture accuracy, repeatability and design sense of participation of consumers.
Disclosure of Invention
In view of the above, there is a need for a method for preparing a concrete brick capable of being printed in colors, wherein the prepared concrete brick can have printed patterns, the patterns are changeable, the design feeling is good, and the comprehensive performance of the concrete brick is high.
A preparation method of a concrete brick capable of being printed in color comprises the following steps:
1) printing the image to be printed on the bottom layer of the bottom die through a printer;
2) placing the bottom die on a workbench, and pouring resin on the surface layer of the bottom die;
3) preparing the following raw materials in percentage by weight:
cement, admixture, high-efficiency water reducing agent, color pigment, water-retaining agent, thickening agent, fiber and aggregate;
wherein the mass ratio of the cement to the admixture to the aggregate is 30-35:30-35: 30-35;
the high-efficiency water reducing agent accounts for 0.3 to 1.2 percent of the total weight of the glue material, the color pigment accounts for 0 to 10 percent of the weight of the cement, the water-retaining agent accounts for 0.1 to 1.0 percent of the weight of the total glue material, the thickening agent accounts for 0.02 to 1.0 percent of the weight of the total glue material, and the fiber accounts for 0 to 3 percent of the weight of the total glue material;
wherein the sum of the cement and the admixture is called total glue material,
mixing the above raw materials uniformly, adding water, stirring at water-cement ratio of 0.14-0.25, stirring speed of 20-120r/s for 3-15min to obtain concrete slurry;
4) pouring the concrete slurry obtained in the step 3) onto the bottom die obtained in the step 2, vibrating for compacting, curing and demolding.
Wherein, the resin in the step 1) is acrylic resin, the viscosity average molecular weight of the acrylic resin is 8000-10000, and the viscosity average molecular weight is tested according to GB/T5547-2007.
Wherein the high-efficiency water reducing agent is a polycarboxylic acid water reducing agent.
Wherein the cement is one or a combination of more of portland cement, phosphate cement, aluminate cement and sulphoaluminate cement.
Wherein the admixture is one or a combination of more of fly ash, mineral powder, kaolin and silica fume.
Wherein the water-retaining agent is one or more of water-absorbing resin SPA and bentonite.
The thickening agent is one or more of cellulose ether and derivatives thereof, starch, rubber powder, polyethylene oxide, sodium polyacrylate, polyvinyl alcohol and low molecular polyethylene wax, and the cellulose ether is hydroxyethyl cellulose ether.
The fiber is one or more of glass fiber, polyvinyl alcohol fiber, polypropylene fiber and basalt fiber.
Wherein the aggregate is one or more of 10-120 mesh quartz sand and 120-800 mesh quartz powder.
Wherein the casting thickness of the resin in the step 1 is less than 5mm, and the casting thickness of the concrete in the step 3 is less than 5 cm.
Compared with the prior art, the preparation method of the concrete brick capable of being printed in color provided by the invention has the advantages that the concrete brick can be printed with patterns, the patterns are changeable, the design feeling is good and the comprehensive performance of the concrete brick is high by selecting specific materials according to a specific proportion and a specific preparation method.
Detailed Description
The method for making the color printable concrete tile of the present invention will be further described with reference to some embodiments. The specific examples are intended to illustrate the present invention in further detail, and are not intended to limit the scope of the present invention.
The total glue material referred to in the invention refers to the sum of cement and admixture.
The water cement ratio is the mass ratio of water to cement.
The material sources used in the invention are as follows:
polycarboxylic acid water reducing agent: ten thousand new materials, inc, guangzhou city;
the water-retaining agent water-absorbing resin SPA is prepared from Guangzhou Lexin chemical industry Co., Ltd, and has the trade mark: kedi;
cellulose ether: hydroxyethyl cellulose ether, dow, QP 4400H;
epoxy resin: the viscosity-average molecular weight is 9000, and the viscosity-average molecular weight is tested according to GB/T5547-2007 from Kyoho chemical Co., Ltd;
oil-based printing paper: guangzhou city Peng gallop trade company Limited, digital products are painted and printed with white matt white sticker materials.
The following examples test concrete bricks for 28-day compressive strength, flexural strength, water absorption and volume weight according to GB/T31387-2015.
Example 1
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 1.2 percent of the total admixture of the glue materials, the water-absorbing resin SPA of the water-retaining agent accounts for 0.9 percent of the total admixture of the glue materials, the hydroxyethyl cellulose ether accounts for 0.05 percent of the total admixture of the glue materials, the starch accounts for 0.6 percent of the total admixture of the glue materials, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 2 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 8.75 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state to form a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring acrylic resin (with viscosity average molecular weight of 8000) on the paper printed with the image, wherein the pouring thickness is 2mm, standing for 30min at 20 ℃, and fully fusing and adsorbing the coloring image with the resin. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Example 2
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 10 parts of metakaolin, 20 parts of quartz sand and 15 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 0.3 percent of the total admixture of the glue material, the water-retaining agent SPA water-absorbing resin accounts for 1 percent of the total admixture of the glue material, the hydroxyethyl cellulose ether accounts for 1.0 percent of the total admixture of the glue material, and the basalt fiber accounts for 3 percent of the total admixture of the glue material;
weighing all the raw materials, putting the raw materials into a stirrer, stirring for 3min, weighing 4.9 parts of water, adding the water into the stirrer, mixing and stirring, slowly stirring at the speed of 30r/min for 2-5min, rapidly stirring at the speed of 100r/min for 3min after the slurry is in a plastic state to form a fluid state, slowly stirring for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring acrylic resin (with viscosity average molecular weight of 9000) on the paper printed with the image, wherein the pouring thickness is 2mm, standing at 20 ℃ for 30min to ensure that the coloring image is fully fused with the resin and adsorbed. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Example 3
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 1.2 percent of the total admixture of the glue materials, the water-absorbing resin SPA of the water-retaining agent accounts for 0.9 percent of the total admixture of the glue materials, the hydroxyethyl cellulose ether accounts for 0.05 percent of the total admixture of the glue materials, the starch accounts for 0.6 percent of the total admixture of the glue materials, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 2 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 8.75 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state to form a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring acrylic resin (with viscosity average molecular weight of 10000) on the paper printed with the image, wherein the pouring thickness is 2mm, standing for 30min at 20 ℃, and fully fusing and adsorbing the coloring image with the resin. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Comparative example 1
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylic acid water reducing agent accounts for 1.5 percent of the total admixture of the glue materials, the water-retaining agent water-absorbing resin SPA accounts for 1.2 percent of the total admixture of the glue materials, the hydroxyethyl cellulose ether accounts for 0.05 percent of the total admixture of the glue materials, the starch accounts for 0.6 percent of the total admixture of the glue materials, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 2 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 10 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state, stirring the slurry in a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring acrylic resin (with viscosity average molecular weight of 8000) on the paper printed with the image, wherein the pouring thickness is 2mm, standing for 30min at 20 ℃, and fully fusing and adsorbing the coloring image with the resin. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Comparative example 2
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 1.2 percent of the total admixture of the glue material, the water-absorbing resin SPA of the water-retaining agent accounts for 0.9 percent of the total admixture of the glue material, the hydroxyethyl cellulose ether accounts for 1.5 percent of the total admixture of the glue material, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 5 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 15 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state, stirring the slurry in a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring an acrylic resin (with the viscosity average molecular weight of 8000) binder on the paper printed with the image, wherein the pouring thickness is 2mm, standing for 30min at the temperature of 20 ℃, and fully fusing and adsorbing the coloring image with the resin. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Comparative example 3
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 1.2 percent of the total admixture of the glue materials, the water-absorbing resin SPA of the water-retaining agent accounts for 0.9 percent of the total admixture of the glue materials, the hydroxyethyl cellulose ether accounts for 0.05 percent of the total admixture of the glue materials, the starch accounts for 0.6 percent of the total admixture of the glue materials, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 2 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 8.75 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state to form a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring epoxy resin (with viscosity average molecular weight of 9000) on the paper printed with the image, wherein the pouring thickness is 2mm, standing at 20 ℃ for 30min to ensure that the coloring image is fully fused with the resin and adsorbed. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Comparative example 4
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 1.2 percent of the total admixture of the glue materials, the water-absorbing resin SPA of the water-retaining agent accounts for 0.9 percent of the total admixture of the glue materials, the hydroxyethyl cellulose ether accounts for 0.05 percent of the total admixture of the glue materials, the starch accounts for 0.6 percent of the total admixture of the glue materials, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 2 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 8.75 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state to form a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring polyurethane on the paper printed with the image, wherein the pouring thickness is 2mm, standing for 30min at the temperature of 20 ℃, and fully fusing and adsorbing the coloring image with resin. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Comparative example 5
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 1.2 percent of the total admixture of the glue materials, the water-absorbing resin SPA of the water-retaining agent accounts for 0.9 percent of the total admixture of the glue materials, the hydroxyethyl cellulose ether accounts for 0.05 percent of the total admixture of the glue materials, the starch accounts for 0.6 percent of the total admixture of the glue materials, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 2 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 8.75 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state to form a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring acrylic resin (with viscosity average molecular weight of 12000) on the paper printed with the image, wherein the pouring thickness is 2mm, standing for 30min at 20 ℃, and fully fusing and adsorbing the coloring image with the resin. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
Comparative example 6
Weighing 35 parts of portland cement, 10 parts of mineral powder, 10 parts of first-grade fly ash, 15 parts of metakaolin, 20 parts of quartz sand and 10 parts of quartz powder according to the weight ratio; the polycarboxylate superplasticizer accounts for 1.2 percent of the total admixture of the glue materials, the water-absorbing resin SPA of the water-retaining agent accounts for 0.9 percent of the total admixture of the glue materials, the hydroxyethyl cellulose ether accounts for 0.05 percent of the total admixture of the glue materials, the starch accounts for 0.6 percent of the total admixture of the glue materials, the iron oxide red pigment cement accounts for 3 percent of the total admixture of the cement, and the basalt fiber accounts for 2 percent of the total admixture of the cement;
weighing all the raw materials, putting into a stirrer, stirring for 3min, weighing 8.75 parts of water, adding into the stirrer, stirring slowly at the speed of 30r/min for 2-5min, stirring quickly at the speed of 100r/min for 3min after the slurry is in a plastic state to form a fluid state, stirring slowly for 3-5min, controlling the total stirring time within 10-15min, and keeping the moisture for later use after stirring.
By using printer equipment, a user prints a required color image on oily printing paper by using sun-proof printing ink, and the oily printing paper is laid on a flat bottom die and is fixed by using a frame with a required thickness. And (3) pouring acrylic resin (with viscosity average molecular weight of 6000) on the paper printed with the image, wherein the pouring thickness is 2mm, standing for 30min at 20 ℃, and fully fusing and adsorbing the coloring image with the resin. And then pouring the stirred concrete slurry on resin, wherein the thickness of the concrete slurry is 3cm, vibrating and compacting, curing at 20 ℃ for 24 hours, demolding, putting the demolded concrete into a curing room at 20 ℃ for curing for 3 days to increase the compressive strength of the concrete to 100MPa, and moving the concrete to outdoor finished product curing.
The concrete blocks obtained in examples 1 and 2 and comparative examples 1, 2, 3 and 4 were tested for 28-day compressive strength, flexural strength and water absorption according to GB/T31387-2015, and the test results are shown in the following table.
The concrete brick was placed outdoors with the oily printing paper facing upward for weather resistance testing, and after 1 month, the concrete brick was observed, and the separation of the film paper layer from the resin layer and the separation of the resin layer from the concrete layer were recorded as shown in the following table.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A preparation method of a concrete brick capable of being printed in color is characterized by comprising the following steps:
1) printing the image to be printed on the bottom layer of the bottom die through a printer;
2) placing the bottom die on a workbench, and pouring resin on the surface layer of the bottom die;
3) preparing the following raw materials in percentage by weight:
cement, admixture, high-efficiency water reducing agent, color pigment, water-retaining agent, thickening agent, fiber and aggregate;
wherein the mass ratio of the cement to the admixture to the aggregate is 30-35:30-35: 30-35;
the high-efficiency water reducing agent accounts for 0.3 to 1.2 percent of the total weight of the glue material, the color pigment accounts for 0 to 10 percent of the weight of the cement, the water-retaining agent accounts for 0.1 to 1.0 percent of the weight of the total glue material, the thickening agent accounts for 0.02 to 1.0 percent of the weight of the total glue material, and the fiber accounts for 0 to 3 percent of the weight of the total glue material;
wherein the sum of the cement and the admixture is called total glue material,
mixing the above raw materials uniformly, adding water, stirring at water-cement ratio of 0.14-0.25, stirring speed of 20-120r/s for 3-15min to obtain concrete slurry;
4) pouring the concrete slurry obtained in the step 3) onto the bottom die obtained in the step 2), vibrating for compacting, maintaining and demolding to obtain the concrete bottom die;
the resin in the step 1) is acrylic resin, the viscosity average molecular weight of the acrylic resin is 8000-10000, and the viscosity average molecular weight is tested according to GB/T5547-2007.
2. The method of making a color printable concrete tile according to claim 1, wherein:
the high-efficiency water reducing agent is a polycarboxylic acid water reducing agent.
3. The method of making a color printable concrete tile according to claim 1, wherein:
the cement is one or a combination of more of portland cement, phosphate cement, aluminate cement and sulphoaluminate cement.
4. The method of making a color printable concrete tile according to claim 1, wherein:
the admixture is one or a combination of more of fly ash, mineral powder, kaolin and silica fume.
5. The method of making a color printable concrete tile according to claim 1, wherein:
the water-retaining agent is one or more of water-absorbing resin SPA and bentonite.
6. The method of making a color printable concrete tile according to claim 1, wherein:
the thickening agent is one or more of cellulose ether and derivatives thereof, starch, rubber powder, polyethylene oxide, sodium polyacrylate, polyvinyl alcohol and low molecular polyethylene wax, and the cellulose ether is hydroxyethyl cellulose ether.
7. The method of making a color printable concrete tile according to claim 1, wherein:
the fiber is one or more of glass fiber, polyvinyl alcohol fiber, polypropylene fiber and basalt fiber.
8. The method of making a color printable concrete tile according to claim 1, wherein:
the aggregate is one or more of 10-120 mesh quartz sand and 120-800 mesh quartz powder.
9. The method of making a color printable concrete tile according to claim 1, wherein:
the pouring thickness of the resin in the step 1) is less than 5mm, and the pouring thickness of the concrete in the step 3) is less than 5 cm.
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| CN111704408B (en) * | 2020-06-11 | 2022-04-26 | 东南大学 | Concrete prepared by intelligently designing three-dimensional reticular framework through 3D printing and preparation method thereof |
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