CN114956764A - 3D printing concrete added with organic sand and glass powder and preparation method thereof - Google Patents
3D printing concrete added with organic sand and glass powder and preparation method thereof Download PDFInfo
- Publication number
- CN114956764A CN114956764A CN202210387111.7A CN202210387111A CN114956764A CN 114956764 A CN114956764 A CN 114956764A CN 202210387111 A CN202210387111 A CN 202210387111A CN 114956764 A CN114956764 A CN 114956764A
- Authority
- CN
- China
- Prior art keywords
- mass
- parts
- concrete
- glass powder
- 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 107
- 239000004576 sand Substances 0.000 title claims abstract description 64
- 239000011521 glass Substances 0.000 title claims abstract description 54
- 238000010146 3D printing Methods 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 81
- 239000010881 fly ash Substances 0.000 claims abstract description 33
- 239000002893 slag Substances 0.000 claims abstract description 33
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 17
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims description 44
- 239000000203 mixture Substances 0.000 claims description 40
- 239000012190 activator Substances 0.000 claims description 31
- 238000002156 mixing Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 16
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 14
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 14
- 229910001626 barium chloride Inorganic materials 0.000 claims description 14
- 239000010438 granite Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 239000000176 sodium gluconate Substances 0.000 claims description 14
- 229940005574 sodium gluconate Drugs 0.000 claims description 14
- 235000012207 sodium gluconate Nutrition 0.000 claims description 14
- 238000007639 printing Methods 0.000 claims description 9
- 238000013329 compounding Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000002910 solid waste Substances 0.000 abstract description 19
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 9
- 229910000323 aluminium silicate Inorganic materials 0.000 description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229920000876 geopolymer Polymers 0.000 description 4
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920003041 geopolymer cement Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004056 waste incineration Methods 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
- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/048—Granite
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/22—Glass ; Devitrified glass
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00181—Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides 3D printing concrete added with organic sand and glass powder and a preparation method thereof, wherein the 3D printing concrete is prepared from the following raw materials: 30-100 parts of slag, 10-90 parts of fly ash, 17-60 parts of glass powder, 50-200 parts of machine-made sand, 0.5-1 part of retarder, 10-70 parts of sodium silicate solution, 0.1-0.9 part of sodium hydroxide powder and 10-60 parts of water. The concrete adopts the building solid waste glass, the industrial solid waste slag, the fly ash and the like as raw materials, not only realizes the recycling of solid waste, but also makes up for the defects of natural raw materials, reduces the dependence degree on the natural raw materials, and weakens the environmental pressure while reducing the cost.
Description
Technical Field
The invention relates to the technical field of recycled concrete preparation, in particular to 3D printing concrete added with organic sand and glass powder and a preparation method thereof.
Background
The 3D printing concrete technology is based on the deep crossing and fusion of multiple disciplines such as machinery, computers, automatic control, materials, architecture, civil engineering and the like, a plurality of related innovative products and practical applications are frequently produced, and the development of the 3D printing concrete technology can comprehensively improve the building industrialization level. However, the 3D printing concrete is not environment-friendly due to the excessive cement consumption.
With the modern construction of our country for decades, the river sand is less and less stored. Meanwhile, a large amount of industrial solid wastes such as slag, fly ash and the like are generated in the industrial production process, and the stacking of the industrial solid wastes not only occupies land resources but also can generate environmental pollution. In the process of urbanization, a large amount of old glass is detached from old buildings, the glass is not effectively utilized, and most of the glass is incinerated in a waste incineration plant. The geopolymer material is a cementing material formed by mixing and reacting an alkaline activator and aluminosilicate solid waste materials with pozzolanic activity, and the waste materials are just rich in aluminosilicate in slag, fly ash and glass powder, so that the waste materials are changed into valuable things, and the geopolymer concrete is a good thing benefiting the nation and the people. Due to the use of the high-alkalinity excitant, the geopolymer material has the advantage of high setting speed, which is beneficial to improving the constructability of 3D printed concrete.
Based on this, how to adopt geopolymer material to make concrete suitable for 3D printing becomes a problem to be solved at present.
The 3D printing alkali-activated geopolymer material is developed based on glass powder and machine-made sand, so that the upgrading of an intelligent construction technology and the improvement of construction efficiency are facilitated, the problems of natural sand resource shortage and the treatment and utilization of solid wastes such as glass powder, slag and fly ash can be solved, the urgent technical development requirements and wide market application prospects are realized, and no relevant technologies are reported at the present stage.
Disclosure of Invention
The invention aims to provide 3D printing concrete added with organic sand and glass powder and a preparation method thereof, which not only realize the recycling of industrial solid wastes and make up for the problem of shortage of natural resources, but also have better mechanical property and printing property, and meet the use requirement of the profile construction process of additive manufacturing.
In order to achieve the purpose, the invention provides the following technical scheme: the 3D printing concrete added with the organic sand and the glass powder is prepared from the following raw materials:
30-100 parts by mass of slag,
10-90 parts by mass of fly ash,
17-60 parts by mass of glass powder,
50-200 parts by mass of machine-made sand,
0.5 to 1 part by mass of a retarder,
10-70 parts by mass of a sodium silicate solution,
0.1 to 0.9 parts by mass of sodium hydroxide powder,
10-60 parts by mass of water.
Further, the particle size of the glass powder is less than 200um, the fly ash is F-grade fly ash, the slag is S95-grade slag, the machine-made sand is prepared by crushing cobblestones and/or granite and then processing the crushed cobblestones and/or granite through a wet sand making process, and the particle size of the machine-made sand is less than 2 mm.
Further, the feed is prepared from the following raw materials:
50-80 parts by mass of slag,
40-70 parts by mass of fly ash,
30-50 parts by mass of glass powder,
100-190 parts by mass of machine-made sand,
0.6 to 0.95 mass part of retarder,
30-45 parts by mass of a sodium silicate solution,
0.6 to 0.8 part by mass of sodium hydroxide powder,
30-50 parts by mass of water.
Further, the feed is prepared from the following raw materials:
60 parts by mass of slag,
70 parts of fly ash by mass,
60 parts by mass of glass powder,
100 parts by mass of the machine-made sand,
0.95 part by mass of a retarder,
30 parts by mass of a sodium silicate solution,
0.6 part by mass of sodium hydroxide powder,
45 parts by mass of water.
Further, the retarder is prepared by compounding sodium gluconate powder and barium chloride powder, wherein the mass ratio of the sodium gluconate powder to the barium chloride powder is 2: 1.
Further, the sodium silicate solution had a modulus of 3.26.
Further, the purity of the sodium hydroxide was 96%.
The invention also provides a preparation method of the 3D printing concrete added with the organic sand and the glass powder, which comprises the following steps:
preparing an alkali activator at least 12h in advance, comprising: uniformly mixing 10-60 parts by mass of water and 10-70 parts by mass of a sodium silicate solution to obtain a wet material mixture, adding 0.1-0.9 part by mass of sodium hydroxide powder into the wet material mixture, and fully dissolving to obtain an alkali activator with the alkali equivalent of 2-6%;
preparing a dry mix comprising: uniformly mixing 30-100 parts by mass of slag, 10-90 parts by mass of fly ash, 17-60 parts by mass of glass powder, 50-200 parts by mass of machine-made sand and 0.5-1 part by mass of retarder to obtain a dry material mixture;
and preparing the concrete for 3D printing, wherein the preparation method comprises the step of uniformly mixing the alkali activator and the dry material mixture to obtain the concrete for 3D printing.
The invention also provides a concrete finished product, which is prepared by the following steps:
manufacturing a test piece, wherein the 3D printing concrete added with the organic sand and the glass powder is input into a 3D printer charging barrel to be printed to obtain a concrete test piece, the diameter of an extrusion head is 10-25 mm, and the printing speed is 1000-1600 mm/min; the XY axis moving speed in the printing speed is 3500-5000 mm/min; the moving speed of the Z axis is 500-1500 mm/min;
and (3) preparing a finished product, namely covering the concrete test piece with a film, curing the concrete test piece for 24 hours at normal temperature, and then putting the concrete test piece into a standard curing room for curing for 3-28 days to obtain the concrete finished product, wherein the standard curing room is at the temperature of 18-22 ℃ and the relative humidity of 90-95%.
Compared with the prior art, the invention has the beneficial effects that:
1. the concrete adopts the building solid waste glass, the industrial solid waste slag, the fly ash and the like as raw materials, not only realizes the recycling of solid waste, but also makes up for the defects of natural raw materials, reduces the dependence degree on the natural raw materials, and weakens the environmental pressure while reducing the cost.
2. The concrete material has excellent performance, wherein the mechanical sand keeps the mechanical property and the durability consistent with those of natural river sand, and has more excellent printable performance, thereby meeting the requirement of additive construction.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example one
The preparation method of the 3D printing concrete added with the organic sand and the glass powder comprises the following steps:
s1, preparing an alkali activator, comprising: uniformly mixing 30 parts by mass of water and 40 parts by mass of sodium silicate solution to obtain a wet material mixture, adding 0.8 part by mass of sodium hydroxide powder into the wet material mixture while stirring until the sodium hydroxide powder is fully dissolved to obtain the alkali activator with the alkali equivalent of 2-6%. The sodium hydroxide powder is used for adjusting the alkali equivalent of the alkali activator to control the alkali equivalent to be 2-6%. It should be noted that the alkali-activating agent needs to be prepared at least 12 hours in advance.
S2, preparing a dry material mixture, which comprises the following steps: mixing 80 parts by mass of slag, 50 parts by mass of fly ash, 30 parts by mass of glass powder, 100 parts by mass of machine-made sand and 0.8 part by mass of retarder, and stirring until the mixture is uniformly mixed to obtain a dry material mixture. The geopolymer concrete has the characteristic of rapid hardening, and when uncontrollable factors are encountered in the construction process, in order to prevent the 3D printing extrusion device from being blocked due to the hardening of the concrete, a retarder needs to be added at the moment. The retarder is prepared by compounding sodium gluconate powder and barium chloride powder, wherein the mass ratio of the sodium gluconate powder to the barium chloride powder is 2: 1. The glass powder is made from old glass detached from old buildings, and is crushed and ground, and then the powder with the particle size of less than 200um is screened out by a screen and used as a raw material. The fly ash is F-grade fly ash, the slag is S95-grade slag, the machine-made sand is prepared by crushing cobbles and/or granite and then treating the crushed cobbles and/or granite by a wet sand making process, and the particle size of the machine-made sand is less than 2 mm.
S3, preparing the concrete for 3D printing, which comprises the following steps: and mixing and stirring the alkali activator and the dry material mixture to completely dissolve the solid waste powder rich in the aluminosilicate so as to obtain the concrete for 3D printing.
Example two
The preparation method of the 3D printing concrete added with the organic sand and the glass powder comprises the following steps:
s1, preparing an alkali activator, comprising: uniformly mixing 45 parts by mass of water and 30 parts by mass of a sodium silicate solution to obtain a wet material mixture, adding 0.6 part by mass of sodium hydroxide powder into the wet material mixture while stirring until the sodium hydroxide powder is fully dissolved to obtain the alkali activator with the alkali equivalent of 2-6%. The sodium hydroxide powder is used for adjusting the alkali equivalent of the alkali activator, so that the modulus of the alkali activator is controlled to be 2-6%. It should be noted that the alkali-activating agent needs to be prepared at least 12 hours in advance.
S2, preparing a dry material mixture, which comprises the following steps: mixing 60 parts by mass of slag, 70 parts by mass of fly ash, 60 parts by mass of glass powder, 100 parts by mass of machine-made sand and 0.95 part by mass of retarder, and stirring until the mixture is uniformly mixed to obtain a dry material mixture. The retarder is prepared by compounding sodium gluconate powder and barium chloride powder, wherein the mass ratio of the sodium gluconate powder to the barium chloride powder is 2: 1. The particle size of the glass powder is less than 200um, the fly ash is F-grade fly ash, the slag is S95-grade slag, the machine-made sand is prepared by crushing cobbles and/or granite and then treating the crushed cobbles and/or granite by a wet sand making process, and the particle size of the machine-made sand is less than 2 mm.
S3, preparing the concrete for 3D printing, which comprises the following steps: and mixing and stirring the alkali activator and the dry material mixture to completely dissolve the solid waste powder rich in the aluminosilicate so as to obtain the concrete for 3D printing.
EXAMPLE III
The preparation method of the 3D printing concrete added with the organic sand and the glass powder comprises the following steps:
s1, preparing an alkali activator, comprising: uniformly mixing 50 parts by mass of water and 45 parts by mass of sodium silicate solution to obtain a wet material mixture, adding 0.6 part by mass of sodium hydroxide powder into the wet material mixture while stirring until the sodium hydroxide powder is fully dissolved to obtain the alkali activator with the alkali equivalent of 2-6%. The sodium hydroxide powder is used for adjusting the alkali equivalent of the alkali activator, so that the modulus of the alkali activator is controlled to be 2-6%. It should be noted that the alkali-activating agent needs to be prepared at least 12 hours in advance.
S2, preparing a dry material mixture, which comprises the following steps: mixing 50 parts by mass of slag, 40 parts by mass of fly ash, 30 parts by mass of glass powder, 190 parts by mass of machine-made sand and 0.6 part by mass of retarder, and stirring until the mixture is uniformly mixed to obtain a dry material mixture. The retarder is prepared by compounding sodium gluconate powder and barium chloride powder, wherein the mass ratio of the sodium gluconate powder to the barium chloride powder is 2: 1. The particle size of the glass powder is less than 200um, the fly ash is F-grade fly ash, the slag is S95-grade slag, the machine-made sand is prepared by crushing cobbles and/or granite and then treating the crushed cobbles and/or granite by a wet sand making process, and the particle size of the machine-made sand is less than 2 mm.
S3, preparing the concrete for 3D printing, which comprises the following steps: and mixing and stirring the alkali activator and the dry material mixture to completely dissolve the solid waste powder rich in the aluminosilicate so as to obtain the concrete for 3D printing.
Example four
The preparation method of the 3D printing concrete added with the organic sand and the glass powder comprises the following steps:
s1, preparing an alkali activator, comprising: uniformly mixing 10 parts by mass of water and 70 parts by mass of sodium silicate solution to obtain a wet material mixture, adding 0.9 part by mass of sodium hydroxide powder into the wet material mixture while stirring until the sodium hydroxide powder is fully dissolved to obtain the alkali activator with the alkali equivalent of 2-6%. The sodium hydroxide powder is used for adjusting the alkali equivalent of the alkali activator, so that the modulus of the alkali activator is controlled to be 2-6%. It should be noted that the alkali-activating agent needs to be prepared at least 12 hours in advance.
S2, preparing a dry material mixture, which comprises the following steps: mixing 30 parts by mass of slag, 90 parts by mass of fly ash, 50 parts by mass of glass powder, 200 parts by mass of machine-made sand and 1 part by mass of retarder, and stirring until the mixture is uniformly mixed to obtain a dry material mixture. The retarder is prepared by compounding sodium gluconate powder and barium chloride powder, wherein the mass ratio of the sodium gluconate powder to the barium chloride powder is 2: 1. The particle size of the glass powder is less than 200um, the fly ash is F-grade fly ash, the slag is S95-grade slag, the machine-made sand is prepared by crushing cobbles and/or granite and then treating the crushed cobbles and/or granite by a wet sand making process, and the particle size of the machine-made sand is less than 2 mm.
S3, preparing the concrete for 3D printing, including: and mixing and stirring the alkali activator and the dry material mixture to completely dissolve the solid waste powder rich in the aluminosilicate so as to obtain the concrete for 3D printing.
EXAMPLE five
The preparation method of the 3D printing concrete added with the organic sand and the glass powder comprises the following steps:
s1, preparing an alkali activator, comprising: uniformly mixing 60 parts by mass of water and 10 parts by mass of a sodium silicate solution to obtain a wet material mixture, adding 0.1 part by mass of sodium hydroxide powder into the wet material mixture while stirring until the sodium hydroxide powder is fully dissolved to obtain the alkali activator with the alkali equivalent of 2-6%. The sodium hydroxide powder is used for adjusting the alkali equivalent of the alkali activator, so that the modulus of the alkali activator is controlled to be 2-6%. It should be noted that the alkali-activating agent needs to be prepared at least 12 hours in advance.
S2, preparing a dry material mixture, which comprises the following steps: mixing 100 parts by mass of slag, 10 parts by mass of fly ash, 17 parts by mass of glass powder, 50 parts by mass of machine-made sand and 0.5 part by mass of retarder, and stirring until the mixture is uniformly mixed to obtain a dry material mixture. The retarder is prepared by compounding sodium gluconate powder and barium chloride powder, wherein the mass ratio of the sodium gluconate powder to the barium chloride powder is 2: 1. The particle size of the glass powder is less than 200um, the fly ash is F-grade fly ash, the slag is S95-grade slag, the machine-made sand is prepared by crushing cobbles and/or granite and then treating the crushed cobbles and/or granite by a wet sand making process, and the particle size of the machine-made sand is less than 2 mm.
S3, preparing the concrete for 3D printing, which comprises the following steps: and mixing and stirring the alkali activator and the dry material mixture to completely dissolve the solid waste powder rich in the aluminosilicate so as to obtain the concrete for 3D printing.
In examples one to five, the modulus of the sodium silicate solution was 3.26 and the purity of the sodium hydroxide powder was 96%.
Based on the same inventive concept, the invention also provides a concrete finished product, which is prepared by the following steps:
manufacturing a test piece, comprising: and inputting the 3D printing concrete with the organic sand and glass powder added randomly in the first to fifth embodiments into a charging barrel of a 3D printer for printing to obtain a concrete test piece. The diameter of the extrusion head is 10-25 mm, and the printing speed is 1000-1600 mm/min; the XY axis moving speed in the printing speed is 3500-5000 mm/min; the moving speed of the Z axis is 500-1500 mm/min.
Secondly, manufacturing a finished product, comprising: and (3) coating a concrete test piece, curing for 24 hours at normal temperature, and then putting the concrete test piece into a standard curing room for curing for 3-28 days to obtain a concrete finished product, wherein the standard curing room conditions are 18-22 ℃ and the relative humidity is 90-95%.
The printing performance and mechanical performance indexes of the concrete for 3D printing provided in the embodiments one to five are shown in table 1.
Wherein, the mechanical properties in Table 1 refer to the Cement mortar Strength test method (ISO) method (GB/T17671). As can be seen from Table 1, the properties of the concrete prepared by the method all meet the expected requirements, and the requirements of 3D printing are met. The raw materials adopt industrial solid wastes such as machine-made sand, glass powder and the like and building solid wastes to replace natural materials, the cost is reduced, meanwhile, the influence caused by solid waste pollution is reduced, and the method has higher economic value and social value.
The invention is not described in detail, but is well known to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it is to be noted that: although the present invention has been described in detail with reference to examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. 3D who adds organic system sand and glass powder prints concrete, its characterized in that: the feed is prepared from the following raw materials:
30-100 parts by mass of slag,
10-90 parts by mass of fly ash,
17-60 parts by mass of glass powder,
50-200 parts by mass of machine-made sand,
0.5 to 1 part by mass of a retarder,
10-70 parts by mass of a sodium silicate solution,
0.1 to 0.9 parts by mass of sodium hydroxide powder,
10-60 parts by mass of water.
2. The 3D printing concrete added with organic sand and glass powder according to claim 1, characterized in that: the particle size of the glass powder is less than 200um, the fly ash is F-grade fly ash, the slag is S95-grade slag, the machine-made sand is prepared by crushing cobblestones and/or granite and then treating the crushed cobblestones and/or granite through a wet-method sand making process, and the particle size of the machine-made sand is less than 2 mm.
3. The 3D printing concrete added with organic sand and glass powder according to claim 1, characterized in that: the feed is prepared from the following raw materials:
50-80 parts by mass of slag,
40-70 parts by mass of fly ash,
30-50 parts by mass of glass powder,
100-190 parts by mass of machine-made sand,
0.6 to 0.95 mass part of retarder,
30-45 parts by mass of a sodium silicate solution,
0.6 to 0.8 part by mass of sodium hydroxide powder,
30-50 parts by mass of water.
4. The 3D printing concrete added with organic sand and glass powder according to claim 3, characterized in that: the feed is prepared from the following raw materials:
60 parts by mass of slag,
70 parts of fly ash by mass,
60 parts by mass of glass powder,
100 parts by mass of the machine-made sand,
0.95 part by mass of a retarder,
30 parts by mass of a sodium silicate solution,
0.6 part by mass of sodium hydroxide powder,
45 parts by mass of water.
5. The 3D printing concrete added with organic sand and glass powder according to claim 1, characterized in that: the retarder is prepared by compounding sodium gluconate powder and barium chloride powder, and the mass ratio of the sodium gluconate powder to the barium chloride powder is 2: 1.
6. The 3D printing concrete added with organic sand and glass powder according to claim 5, wherein the concrete is characterized in that: the modulus of the sodium silicate solution was 3.26.
7. The 3D printing concrete added with organic sand and glass powder according to claim 6, characterized in that: the purity of the sodium hydroxide was 96%.
8. The preparation method of the 3D printing concrete added with the organic sand and the glass powder is characterized by comprising the following steps of: the method comprises the following steps:
preparing an alkali activator at least 12h in advance, comprising: uniformly mixing 10-60 parts by mass of water and 10-70 parts by mass of a sodium silicate solution to obtain a wet material mixture, adding 0.1-0.9 part by mass of sodium hydroxide powder into the wet material mixture, and fully dissolving to obtain an alkali activator with the alkali equivalent of 2-6%;
preparing a dry mix comprising: uniformly mixing 30-100 parts by mass of slag, 10-90 parts by mass of fly ash, 17-60 parts by mass of glass powder, 50-200 parts by mass of machine-made sand and 0.5-1 part by mass of retarder to obtain a dry material mixture;
and preparing the concrete for 3D printing, wherein the preparation method comprises the step of uniformly mixing the alkali activator and the dry material mixture to obtain the concrete for 3D printing.
9. A concrete finished product is characterized in that: the method comprises the following steps:
manufacturing a test piece, wherein the 3D printing concrete added with the organic sand and the glass powder according to claim 1 is input into a 3D printer cylinder to be printed to obtain a concrete test piece, the diameter of an extrusion head is 10-25 mm, and the printing speed is 1000-1600 mm/min; the XY axis moving speed in the printing speed is 3500-5000 mm/min; the moving speed of the Z axis is 500-1500 mm/min;
and (3) preparing a finished product, namely covering the concrete test piece with a film, curing the concrete test piece for 24 hours at normal temperature, and then putting the concrete test piece into a standard curing room for curing for 3-28 days to obtain the concrete finished product, wherein the standard curing room is at the temperature of 18-22 ℃ and the relative humidity of 90-95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210387111.7A CN114956764A (en) | 2022-04-14 | 2022-04-14 | 3D printing concrete added with organic sand and glass powder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210387111.7A CN114956764A (en) | 2022-04-14 | 2022-04-14 | 3D printing concrete added with organic sand and glass powder and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114956764A true CN114956764A (en) | 2022-08-30 |
Family
ID=82977701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210387111.7A Pending CN114956764A (en) | 2022-04-14 | 2022-04-14 | 3D printing concrete added with organic sand and glass powder and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114956764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116217167A (en) * | 2023-02-24 | 2023-06-06 | 兰州理工大学 | 3D printer-made sand concrete material and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435313A (en) * | 2013-08-26 | 2013-12-11 | 温州大学 | Strength controllable coal ash-based polymer concrete and preparation method thereof |
| CN108178567A (en) * | 2018-02-01 | 2018-06-19 | 济南大学 | A kind of alkali slag cement concrete of 3D printing and preparation method thereof |
| US20200331165A1 (en) * | 2017-10-31 | 2020-10-22 | The Regents Of The University Of Michigan | Self-reinforced cementitious composite compositions for building-scale three dimensional (3d) printing |
| CN113087488A (en) * | 2020-01-08 | 2021-07-09 | 香港理工大学深圳研究院 | 3D printing material and preparation method thereof |
| CN113754359A (en) * | 2021-10-26 | 2021-12-07 | 纳思同(无锡)科技发展有限公司 | All-solid-waste-fiber-reinforced geopolymer composite material suitable for 3D printing technology |
-
2022
- 2022-04-14 CN CN202210387111.7A patent/CN114956764A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435313A (en) * | 2013-08-26 | 2013-12-11 | 温州大学 | Strength controllable coal ash-based polymer concrete and preparation method thereof |
| US20200331165A1 (en) * | 2017-10-31 | 2020-10-22 | The Regents Of The University Of Michigan | Self-reinforced cementitious composite compositions for building-scale three dimensional (3d) printing |
| CN108178567A (en) * | 2018-02-01 | 2018-06-19 | 济南大学 | A kind of alkali slag cement concrete of 3D printing and preparation method thereof |
| CN113087488A (en) * | 2020-01-08 | 2021-07-09 | 香港理工大学深圳研究院 | 3D printing material and preparation method thereof |
| CN113754359A (en) * | 2021-10-26 | 2021-12-07 | 纳思同(无锡)科技发展有限公司 | All-solid-waste-fiber-reinforced geopolymer composite material suitable for 3D printing technology |
Non-Patent Citations (1)
| Title |
|---|
| 张兰芳: "《碱激发矿渣水泥和混凝土》", 31 August 2018, 西南交通大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116217167A (en) * | 2023-02-24 | 2023-06-06 | 兰州理工大学 | 3D printer-made sand concrete material and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111170698B (en) | Regenerated glass fiber reinforced plastic anti-crack thermal insulation mortar and preparation and construction methods thereof | |
| CN105272006A (en) | Red mud autoclaved aerated concrete building block and preparation method of red mud autoclaved aerated concrete building block | |
| CN104944862B (en) | Energy-saving wall material produced by using construction solid wastes and producing method of wall material | |
| CN103951327A (en) | Waste sintered brick powder non-sintered ceramsite and preparation method | |
| CN111302718B (en) | Method for preparing 3D printing concrete from commercial concrete on site | |
| CN113582616A (en) | High-strength alkali-inhibiting construction waste regeneration water permeable brick and preparation method thereof | |
| CN1185179C (en) | Baking-free slag brick and method of making same | |
| CN110746166A (en) | Self-crystallized anti-permeability and moisture-proof mortar and production method thereof | |
| CN109485286A (en) | Baking-free brick of red mud promotor and preparation method thereof | |
| CN111138134A (en) | High-ductility fiber-reinforced recycled mortar for building 3D printing and preparation method thereof | |
| CN109384437B (en) | Hybrid fiber cement-based composite material for 3D printing and preparation method thereof | |
| CN105503051A (en) | Water-permeable brick prepared from slag generated in refuse incineration and preparation method of water-permeable brick | |
| CN114956764A (en) | 3D printing concrete added with organic sand and glass powder and preparation method thereof | |
| CN109111179A (en) | It is a kind of for building the green cement sill of 3D printing | |
| CN103964786A (en) | Method for producing calcium silicate board by utilizing papermaking white clay and quartz stone wastes | |
| CN112592131B (en) | Ultrathin layer masonry mortar special for sintered blocks prepared from recycled fine powder containing red bricks | |
| CN103693908A (en) | Inorganic coating mortar taking ore smelting slag as main raw material and preparation method thereof | |
| CN1498872A (en) | Envionmental protection typed high performance premixed concrete and preparation method | |
| CN113402220A (en) | Application of waste clay brick powder in preparation of plastering mortar and preparation method thereof | |
| CN114751768B (en) | Light-weight high-strength recycled aggregate geopolymer mortar for 3D printing and preparation method thereof | |
| CN115010428A (en) | Building 3D printing material, preparation method and application thereof, and product | |
| CN111792881A (en) | Preparation method of recycled aggregate building block | |
| CN109503090A (en) | A kind of high additive hybrid glass powder C180UHPC and preparation method thereof | |
| CN114956707A (en) | Concrete for frame structure house and preparation method thereof | |
| CN109970413B (en) | Environment-friendly adhesive for garden solid waste and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220830 |