CN113277791A - Industrial solid waste geopolymer material for building 3D printing and preparation method thereof - Google Patents
Industrial solid waste geopolymer material for building 3D printing and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 110
- 229920000876 geopolymer Polymers 0.000 title claims abstract description 85
- 238000010146 3D printing Methods 0.000 title claims abstract description 76
- 239000002910 solid waste Substances 0.000 title claims abstract description 69
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 239000003513 alkali Substances 0.000 claims abstract description 27
- 239000012190 activator Substances 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 23
- 239000010881 fly ash Substances 0.000 claims abstract description 19
- 229910021487 silica fume Inorganic materials 0.000 claims abstract description 19
- 230000008719 thickening Effects 0.000 claims abstract description 19
- 239000013008 thixotropic agent Substances 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 238000003756 stirring Methods 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 14
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 6
- 239000002440 industrial waste Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229910000805 Pig iron Inorganic materials 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 229920003090 carboxymethyl hydroxyethyl cellulose Polymers 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- 239000012802 nanoclay Substances 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 238000009628 steelmaking Methods 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 2
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 46
- 230000008569 process Effects 0.000 abstract description 16
- 230000015271 coagulation Effects 0.000 abstract description 2
- 238000005345 coagulation Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 18
- 239000000843 powder Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 238000003475 lamination Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000012798 spherical particle Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 206010001497 Agitation Diseases 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 150000004677 hydrates Chemical class 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000010423 industrial mineral Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical class [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 230000036964 tight binding Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
- 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
- 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
- C04B18/142—Steelmaking slags, converter 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
- 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
- C04B18/146—Silica fume
-
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides an industrial solid waste geopolymer material for building 3D printing and a preparation method thereof, wherein the industrial solid waste geopolymer material for building 3D printing comprises, by weight, 0.1-50 parts of slag, 0.1-40 parts of steel slag, 0.1-30 parts of silica fume, 0.1-30 parts of fly ash, 0.1-10 parts of alkali activator, 0.1-2.0 parts of water reducing agent, 0.1-2.5 parts of thixotropic agent, 0.1-1.0 part of thickening and water retaining agent, 0.01-0.2 part of defoaming agent and 0.1-2.0 parts of fiber. The industrial solid waste geopolymer material for building 3D printing provided by the invention has adjustable and controllable coagulation time and better fluidity, and can obtain early strength in the printing process so as to ensure the continuous printing; the waterproof performance is high; the printing precision is better, and the high-precision building component can be printed.
Description
Technical Field
The invention relates to the technical field of building 3D printing materials, in particular to an industrial solid waste geopolymer material for building 3D printing and a preparation method thereof.
Background
3D printing is a technique for manufacturing three-dimensional products by adding material layer by a 3D printing device according to a designed 3D model, and this layer-by-layer build-up molding technique is also called additive manufacturing.
The 3D printing material is an important material basis for the development of the 3D printing technology, and the development of the material determines whether the 3D printing can be widely applied or not to some extent. The geopolymer (geopolymer) is a gelled material formed by alkali-activated aluminum-silicon materials, and has better mechanical property, high early strength, wide raw material source, simple process, energy conservation and little environmental pollution (basically no CO emission) compared with the common silicate gelled material2) And the like, and is environment-friendly cement. Geopolymers have good interfacial affinity with common mineral or waste particles, are mostly chemically bonded, and have a transition layer structure. The environmental pollution caused by industrial solid wastes and the waste of resources are one of the main problems of environmental protection and resource protection in the world today.
The existing cementing material for 3D printing of buildings generally has long or too short bonding time, and the setting time cannot be freely regulated so as to meet the requirement of printing and curing a lamination or is cured at an extrusion head in the printing process to cause blockage; the fluidity of the existing mixed gel material for printing is not coordinated with that of extrusion printing, and the excessive or insufficient fluidity of the existing mixed gel material for printing causes obstacles of different degrees on the extrusion printing; the existing gel material for printing can not obtain early strength in a short time in the printing process, and the continuous printing is difficult to ensure; because extrusion printing is a lamination accumulation mode, the adhesive force between printing layers of the existing cementing material for printing is too low in the printing operation, and the printed matter cannot be ensured to have leakage prevention water and higher interlayer adhesive force strength (namely the tensile strength in the vertical direction of printing); the existing cementing material for printing has poor printing precision and cannot print high-precision building components.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an industrial solid waste geopolymer material for building 3D printing and a preparation method thereof, and aims to solve the problem that the setting time of the existing cementing material for 3D printing cannot be freely regulated.
The technical scheme of the invention is as follows:
an industrial solid waste geopolymer material for 3D printing of buildings comprises, by weight, 0.1-50 parts of slag, 0.1-40 parts of steel slag, 0.1-30 parts of silica fume, 0.1-30 parts of fly ash, 0.1-10 parts of an alkali activator, 0.1-2.0 parts of a water reducing agent, 0.1-2.5 parts of a thixotropic agent, 0.1-1.0 part of a thickening and water-retaining agent, 0.01-0.2 part of a defoaming agent and 0.1-2.0 parts of fibers.
The industrial solid waste geopolymer material for building 3D printing comprises, by weight, 0.1-45 parts of slag, 0.1-35 parts of steel slag, 0.1-20 parts of silica fume, 0.1-20 parts of fly ash, 0.1-7.0 parts of alkali activator, 0.1-1.8 parts of water reducer, 0.1-2.0 parts of thixotropic agent, 0.1-0.5 part of water retention agent for thickening, 0.01-0.1 part of defoaming agent and 0.1-1.2 parts of fiber.
The industrial solid waste geopolymer material for building 3D printing is characterized in that the slag is waste slag discharged in pig iron smelting; the steel slag is industrial waste slag discharged from steel making.
The industrial solid waste geopolymer material for building 3D printing is characterized in that the alkali activator is prepared by compounding sodium hydroxide and sodium metasilicate according to a predetermined proportion.
The industrial solid waste geopolymer material for building 3D printing is characterized in that the water reducing agent is one or two of a calcium lignosulfonate water reducing agent and a polycarboxylic acid high-efficiency water reducing agent.
The industrial solid waste geopolymer material for building 3D printing is characterized in that the thixotropic agent is one or more of nano clay, organic bentonite and magnesium aluminum silicate.
The industrial solid waste geopolymer material for building 3D printing is characterized in that the thickening and water-retaining agent is one or more of carboxymethyl hydroxyethyl cellulose, polyacrylamide and hydroxypropyl methyl cellulose ether. .
The industrial solid waste geopolymer material for building 3D printing is characterized in that the defoaming agent is one or two of polyether and higher alcohol.
The industrial solid waste geopolymer material for building 3D printing is characterized in that the fibers are one or more of carbon fibers, polyvinyl alcohol fibers and polypropylene fibers.
The preparation method of the industrial solid waste geopolymer material for building 3D printing comprises the following steps:
pouring the flaky sodium hydroxide into a sodium metasilicate solution, and uniformly stirring to obtain an alkali activator;
weighing 30-40 parts of water according to a proportion, sequentially adding a water reducing agent, a thickening and water retaining agent and a defoaming agent, uniformly stirring by using a magnetic stirrer, and then adding the alkali activator to obtain a mixed solution;
adding slag, steel slag, silica fume, fly ash, a thixotropic agent and fibers into a paste mixer in sequence, and fully and uniformly stirring to obtain an industrial solid waste geopolymer cementing material;
and adding the mixed solution into the industrial solid waste geopolymer cementing material, and uniformly stirring to obtain the industrial solid waste geopolymer material for 3D printing of the building.
Has the advantages that: slag, steel slag, silica fume and fly ash are added into the industrial solid waste geopolymer material for building 3D printing, and the four powdery materials all belong to industrial waste slag generated in industrial mineral production and are treated by a special process to obtain the building material. The fine grinding of the steel slag not only reduces the slag powder particles and increases the specific surface area thereof, further hydrates the f-CaO in the slag powder to improve the stability of the slag powder, but also converts the grinding energy into the internal energy and the surface energy of the slag powder along with the change of the lattice structure and the physicochemical property of the surface of the steel slag, improves the gelling property of the steel slag, and can prepare a high-performance gelling material by utilizing the excitability between the steel slag micro powder and the blast furnace slag powder and adding a proper excitant. The silica fume can fill the pores among the cementing material particles, simultaneously generates gel with a hydration product, and reacts with the alkaline material magnesium oxide to generate gel, and in the forming process, due to the action of surface tension in the phase change process, amorphous spherical particles with amorphous phase are formed, the surface is smooth, and some spherical particles are aggregates formed by sticking a plurality of spherical particles together, so that the volcanic ash substance has large specific surface area and high activity. The fly ash reduces the water consumption, improves the workability of geopolymer gelled material mixture, enhances the pumpability of the geopolymer gelled material, reduces the creep of the geopolymer gelled material, reduces the hydration heat and the thermal expansion property, improves the anti-permeability capability of the geopolymer gelled material, and increases the decoration property of a geopolymer building 3D printing finished product. The industrial solid waste geopolymer material for building 3D printing provided by the invention has adjustable and controllable coagulation time and better fluidity, and can obtain early strength in the printing process so as to ensure the continuous printing; the waterproof performance is high; the printing precision is better, and the high-precision building component can be printed.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the method for preparing industrial solid waste geopolymer material for 3D printing in building according to the present invention.
Detailed Description
The invention provides an industrial solid waste geopolymer material for building 3D printing and a preparation method thereof, and the invention is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an industrial solid waste geopolymer material for 3D printing of buildings, which comprises, by weight, 0.1-50 parts of slag, 0.1-40 parts of steel slag, 0.1-30 parts of silica fume, 0.1-30 parts of fly ash, 0.1-10 parts of an alkali activator, 0.1-2.0 parts of a water reducing agent, 0.1-2.5 parts of a thixotropic agent, 0.1-1.0 part of a thickening and water retaining agent, 0.01-0.2 part of a defoaming agent and 0.1-2.0 parts of fibers.
The slag, the steel slag, the silica fume and the fly ash are added into the industrial solid waste geopolymer material for building 3D printing provided by the embodiment, the four powdery materials all belong to industrial waste slag generated in industrial mineral production, and the building material is obtained by special process treatment, wherein the slag is a high-grade slag obtained from pig iron smeltingTreating the waste slag discharged from the furnace to obtain S95-grade granulated blast furnace slag powder; the steel slag is prepared by multistage crushing and grinding of industrial waste slag discharged from steel making, fine grinding of the steel slag not only reduces slag powder particles and increases the specific surface area of the slag powder, and further hydrates f-CaO (free calcium oxide) in the steel slag to improve the stability of the slag powder, but also converts grinding energy into internal energy and surface energy of the slag powder along with the change of the lattice structure and the surface physical and chemical properties of the steel slag, improves the gelling property of the steel slag, and a high-performance gelling material can be prepared by utilizing the excitability between the steel slag micro powder and the blast furnace slag powder and adding a proper excitant. By way of example, the slag has a density of 2.8g/cm3Specific surface area of 400m2Kg, 7-day activity index is more than 75%, 28-day activity index is more than 95%; the steel slag is obtained by multistage crushing and grinding and then sieving with a 100-mesh sieve, and the specific surface area is 500m2/kg。
In this embodiment, the silica fume can fill the pores between the cementitious material particles, and simultaneously forms a gel with the hydrated product, and reacts with the alkaline material magnesium oxide to form a gel, and in the forming process, due to the effect of surface tension in the phase change process, amorphous spherical particles with amorphous phase are formed, the surface is relatively smooth, some of the particles are aggregates formed by bonding a plurality of spherical particles together, and the pozzolanic substance has a large specific surface area and high activity. For example, the silica fume is gray in appearance, has a fineness of less than 1 μm of 80% or more, an average particle diameter of 0.3 μm, and a specific surface area of 2.0X 104m2/kg。
In the embodiment, the fly ash reduces water consumption, improves the workability of geopolymer gelled material mixture (the workability refers to the properties of difficulty in construction operation and segregation resistance of concrete mixture, and comprises three aspects of fluidity, cohesiveness and water retention), enhances the pumpability of geopolymer gelled material, reduces creep of geopolymer gelled material, reduces hydration heat and thermal expansion, improves the anti-permeability capability of geopolymer gelled material, and increases the modification of geopolymer building 3D printing finished products. By way of example, the fly ash is off-white in appearance, has an average particle size of 43 μm, and has a density of 2.4g/cm3The water content is about 0.5%.
In this embodiment, an alkali activator is added to the industrial solid waste geopolymer material for building 3D printing, and the alkali activator is prepared by compounding sodium hydroxide and sodium metasilicate according to a predetermined ratio. NaOH and KOH generated after the sodium metasilicate is hydrolyzed continuously erode steel slag and slag to form a three-dimensional network polymer taking (-Si-O-Al-O-Si-O-) as a framework, the three-dimensional network polymer has a good excitation effect on the industrial solid waste geopolymer material for 3D printing of the building, and the reaction process of the industrial solid waste geopolymer material prepared by alkali-activated reaction is divided into three stages: in the first stage, aluminosilicate is dissolved under the action of strong alkali; in the second stage, aluminum tetrahedron and silicon tetrahedron are condensed, and the system is gelatinized; and in the third stage, reforming the gel structure, polymerizing and hardening the system.
In this embodiment, the water reducing agent added to the industrial solid waste geopolymer material for building 3D printing is one or two of a polycarboxylic acid water reducing agent and a lignosulfonate, but is not limited thereto. The water reducing agent molecules are directionally adsorbed on the surfaces of the gelled material particles, so that the surfaces of the gelled material particles normally carry a negative charge to form an electrostatic repulsion effect, the gelled material particles are mutually dispersed, a flocculation structure is damaged, and wrapped part of water is released to participate in flowing. The additive has strong hydrophilicity, and the formed adsorption film can form a stable intermolecular film with water molecules, so that the extrusion friction force is reduced, the flowability and the workability are improved, the additive has good continuous extrusion performance, and the phenomenon of material breakage cannot occur due to continuous feeding.
In this embodiment, the thixotropic agent added into the industrial solid waste geopolymer material for building 3D printing is one or more of nano clay, organic bentonite and magnesium aluminum silicate. The thixotropic agent can form a hydrogen bond or a large specific surface area of some other structure with a polymer, and is characterized in that the geopolymer slurry becomes thin under the action of shearing force and becomes thick under the action of standing without the shearing force; the lubricating agent has the functions of lubricating, reducing the relative viscosity, improving the rheological property of the system, improving the yield value of the system and having obvious thixotropic thickening effect. The thixotropic agent additive increases the pumpability and the constructability of the building 3D printing cementing material, prevents the slurry from deforming and collapsing after extrusion printing, and ensures the volume stability of products.
In this embodiment, the thickening and water retaining agent added to the industrial solid waste geopolymer material for building 3D printing is one or more of carboxymethyl hydroxyethyl cellulose, polyacrylamide and hydroxypropyl methyl cellulose ether, but is not limited thereto. The main action mechanism of the thickening and water-retaining agent is as follows: the hydrophobic main chain is associated with the surrounding water molecules through hydrogen bonds, so that the fluid volume of the polymer is increased, the free movement space of particles is reduced, and the viscosity of the system is increased. The increase in viscosity can also be achieved by entanglement of the molecular chains, as indicated by high viscosity at static and low shear, and low viscosity at high shear. The material has good plastic deformation resistance and bonding performance, and the phenomena of lateral deformation and large gaps among layers cannot occur in the printing process, so that potential safety hazards for buildings are avoided.
In this embodiment, the fibers added to the industrial solid waste geopolymer material for building 3D printing are one or more of carbon fibers, polyvinyl alcohol fibers and polypropylene fibers, but are not limited thereto. The fiber can wrap more aggregates, has tight binding force with a cement matrix, has a disorderly distribution form which is greatly beneficial to weakening the stress of the cement matrix during plastic shrinkage and freeze thawing, and the shrinkage energy is dispersed to the fiber monofilament with high tensile strength and relatively low elastic modulus, so that the generation and development of micro cracks are inhibited, and the toughness and the crack resistance of the neat paste are effectively enhanced.
The industrial solid waste geopolymer material for building 3D printing provided by the embodiment does not contain any harmful solvent, heavy metal and radioactive substance, and meanwhile, industrial solid waste can be consumed and treated to be an active cementing material, so that the purposes of environmental friendliness and waste utilization are achieved.
In some embodiments, the defoamer is one or both of polyethers and higher alcohols, but is not limited thereto.
In some embodiments, the industrial solid waste geopolymer material for 3D printing of buildings comprises, by weight, 0.1 to 45 parts of slag, 0.1 to 35 parts of steel slag, 0.1 to 20 parts of silica fume, 0.1 to 20 parts of fly ash, 0.1 to 7.0 parts of alkali activator, 0.1 to 1.8 parts of water reducing agent, 0.1 to 2.0 parts of thixotropic agent, 0.1 to 0.5 parts of water retention agent thickening, 0.01 to 0.1 parts of defoaming agent and 0.1 to 1.2 parts of fiber. .
In some embodiments, there is also provided a method of preparing the industrial solid waste geopolymer material for architectural 3D printing as described above, as shown in fig. 1, comprising the steps of:
s10, pouring the flaky sodium hydroxide into the sodium metasilicate solution, and uniformly stirring to obtain the alkali activator;
s20, weighing 30-40 parts of water according to a proportion, sequentially adding a water reducing agent, a thickening and water retaining agent and a defoaming agent, uniformly stirring by using a magnetic stirrer, and then adding the alkali activator to obtain a mixed solution;
s30, sequentially adding slag, steel slag, silica fume, fly ash, thixotropic agent and fiber into the paste mixer, and fully and uniformly stirring to obtain the industrial solid waste geopolymer cementing material;
and S40, adding the mixed solution into the industrial solid waste geopolymer cementing material, and uniformly stirring to obtain the industrial solid waste geopolymer material for 3D printing of buildings.
In this embodiment, after the building 3D printing industrial solid waste geopolymer material is prepared, a model drawing is drawn by using computer drawing software, then the drawing is guided into a printer by using special slicing software, and then the building 3D printing industrial solid waste geopolymer material is remotely conveyed to a printing nozzle for building 3D printing operation, and product maintenance is performed after printing and molding.
The following is a further explanation of the industrial solid waste geopolymer material for 3D printing of buildings, the preparation method and the performance thereof by specific examples:
example 1
Preparing the following substances in parts by weight:
the preparation method comprises the following steps: weighing raw materials according to a formula, slowly pouring 0.6 part of flaky sodium hydroxide into 5.4 parts of sodium metasilicate solution, continuously stirring to dissolve the flaky sodium hydroxide, and then preparing the prepared alkali activator for later use.
And (3) sequentially adding weighed slag, steel slag, silica fume, fly ash, thixotropic agent and fiber into the slurry mixer, and fully and uniformly mixing to obtain the powdery industrial solid waste geopolymer cementing material.
Taking 33 parts of water, sequentially adding a water reducing agent, a thickening and water retaining agent and a defoaming agent, uniformly stirring by using a magnetic stirrer, and then adding a well-compounded alkali activator to obtain a mixed solution.
And slowly adding the stirred mixed solution into the powdery industrial solid waste geopolymer cementing material, and uniformly stirring for 3min to obtain the printing slurry.
Drawing a model drawing by using computer drawing software, guiding the drawing paper into a printer by using special slicing software, quantitatively supplying prepared printing slurry through slurry conveying equipment, guiding a printing file on a system, carrying out building 3D printing work, and carrying out product maintenance after printing and forming.
The industrial solid waste geopolymer material for building 3D printing is prepared by the component material process, has excellent operable time and good early strength. The extrusion is continuous, uniform and smooth, the lamination constructability is good, the printing surface is fine and smooth and has no crack, and the method can be used for 3D printing building components and small building finished products with larger and higher precision at the room temperature of 15-45 ℃. The red mud-metakaolin composite geopolymer cementing material for 3D printing of buildings is subjected to performance detection, and the result is as follows,
the initial setting time is 20min, and the final setting time is 35 min.
Compressive strength R3d＝36.5MPa，R7d＝48.7MPa，R28d＝56.3MPa。
Example 2
Preparing the following substances in parts by weight:
the preparation method comprises the following steps: weighing raw materials according to a formula, slowly pouring 1.3 parts of flaky sodium hydroxide into 5.2 parts of sodium metasilicate solution, continuously stirring to dissolve the flaky sodium hydroxide, and then preparing the prepared alkali activator for later use.
And (3) sequentially adding weighed slag, steel slag, silica fume, fly ash, thixotropic agent and fiber into the slurry mixer, and fully and uniformly mixing to obtain the powdery industrial solid waste geopolymer cementing material.
Taking 34 parts of water, sequentially adding a water reducing agent, a thickening and water retaining agent and a defoaming agent, uniformly stirring by using a magnetic stirrer, and then adding a well-compounded alkali activator to obtain a mixed solution.
And slowly adding the stirred mixed solution into the powdery industrial solid waste geopolymer cementing material, and uniformly stirring for 3min to obtain the printing slurry.
Drawing a model drawing by using computer drawing software, guiding the drawing paper into a printer by using special slicing software, quantitatively supplying prepared printing slurry through slurry conveying equipment, guiding a printing file on a system, carrying out building 3D printing work, and carrying out product maintenance after printing and forming.
The industrial solid waste geopolymer material for building 3D printing is prepared by the component material process, has excellent operable time and good early strength. The extrusion is continuous, uniform and smooth, the lamination constructability is good, the printing surface is fine and smooth and has no crack, and the method can be used for 3D printing building components and small building finished products with larger and higher precision at the room temperature of 15-45 ℃. The red mud-metakaolin composite geopolymer cementing material for 3D printing of buildings is subjected to performance detection, and the result is as follows,
the initial setting time is 12min, and the final setting time is 20 min.
Compressive strength R3d＝44.4MPa，R7d＝56.6MPa，R28d＝60.7MPa。
Example 3
Preparing the following substances in parts by weight:
the preparation method comprises the following steps: weighing raw materials according to a formula, slowly pouring 1.8 parts of flaky sodium hydroxide into 4.2 parts of sodium metasilicate solution, continuously stirring to dissolve the flaky sodium hydroxide, and then preparing the prepared alkali activator for later use.
And (3) sequentially adding weighed slag, steel slag, silica fume, fly ash, thixotropic agent and fiber into the slurry mixer, and fully and uniformly mixing to obtain the powdery industrial solid waste geopolymer cementing material.
Taking 34 parts of water, sequentially adding a water reducing agent, a thickening and water retaining agent and a defoaming agent, uniformly stirring by using a magnetic stirrer, and then adding a well-compounded alkali activator to obtain a mixed solution.
And slowly adding the stirred mixed solution into the powdery industrial solid waste geopolymer cementing material, and uniformly stirring for 3min to obtain the printing slurry.
Drawing a model drawing by using computer drawing software, guiding the drawing paper into a printer by using special slicing software, quantitatively supplying prepared printing slurry through slurry conveying equipment, guiding a printing file on a system, carrying out building 3D printing work, and carrying out product maintenance after printing and forming.
The industrial solid waste geopolymer material for building 3D printing is prepared by the component material process, has excellent operable time and good early strength. The extrusion is continuous, uniform and smooth, the lamination constructability is good, the printing surface is fine and smooth and has no crack, and the method can be used for 3D printing building components and small building finished products with larger and higher precision at the room temperature of 15-45 ℃. The red mud-metakaolin composite geopolymer cementing material for 3D printing of buildings is subjected to performance detection, and the result is as follows,
the initial setting time is 15min, and the final setting time is 25 min.
Compressive strength R3d＝34.3MPa，R7d＝45.2MPa，R28d＝52.7MPa。
Example 4
Preparing the following substances in parts by weight:
the preparation method comprises the following steps: weighing raw materials according to a formula, slowly pouring 0.55 part of flaky sodium hydroxide into 4.95 parts of sodium metasilicate solution, continuously stirring to dissolve the flaky sodium hydroxide, and preparing the prepared alkali activator for later use.
And (3) sequentially adding weighed slag, steel slag, silica fume, fly ash, thixotropic agent and fiber into the slurry mixer, and fully and uniformly mixing to obtain the powdery industrial solid waste geopolymer cementing material.
Taking 34 parts of water, sequentially adding a water reducing agent, a thickening and water retaining agent and a defoaming agent, uniformly stirring by using a magnetic stirrer, and then adding a well-compounded alkali activator to obtain a mixed solution.
And slowly adding the stirred mixed solution into the powdery industrial solid waste geopolymer cementing material, and uniformly stirring for 3min to obtain the printing slurry.
Drawing a model drawing by using computer drawing software, guiding the drawing paper into a printer by using special slicing software, quantitatively supplying prepared printing slurry through slurry conveying equipment, guiding a printing file on a system, carrying out building 3D printing work, and carrying out product maintenance after printing and forming.
The industrial solid waste geopolymer material for building 3D printing is prepared by the component material process, has excellent operable time and good early strength. The extrusion is continuous, uniform and smooth, the lamination constructability is good, the printing surface is fine and smooth and has no crack, and the method can be used for 3D printing building components and small building finished products with larger and higher precision at the room temperature of 15-45 ℃. The red mud-metakaolin composite geopolymer cementing material for 3D printing of buildings is subjected to performance detection, and the result is as follows,
the initial setting time is 17min, and the final setting time is 30 min.
Compressive strength R3d＝43.1MPa，R7d＝52.3MPa，R28d＝59.7MPa。
It is to be understood that the foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The example embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various example embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. An industrial solid waste geopolymer material for 3D printing of buildings is characterized by comprising, by weight, 0.1-50 parts of slag, 0.1-40 parts of steel slag, 0.1-30 parts of silica fume, 0.1-30 parts of fly ash, 0.1-10 parts of an alkali activator, 0.1-2.0 parts of a water reducing agent, 0.1-2.5 parts of a thixotropic agent, 0.1-1.0 part of a thickening and water retaining agent, 0.01-0.2 part of a defoaming agent and 0.1-2.0 parts of fibers.
2. The industrial solid waste geopolymer material for 3D printing in building of claim 1, which comprises, by weight, 0.1-45 parts of slag, 0.1-35 parts of steel slag, 0.1-20 parts of silica fume, 0.1-20 parts of fly ash, 0.1-7.0 parts of alkali activator, 0.1-1.8 parts of water reducing agent, 0.1-2.0 parts of thixotropic agent, 0.1-0.5 parts of thickening and water retaining agent, 0.01-0.1 parts of defoaming agent and 0.1-1.2 parts of fiber.
3. The industrial solid waste geopolymer material for architectural 3D printing according to any one of claims 1 to 2, wherein the slag is a waste slag discharged in pig iron smelting; the steel slag is industrial waste slag discharged from steel making.
4. The industrial solid waste geopolymer material for building 3D printing according to any one of claims 1-2, wherein the alkali-activator is prepared by compounding sodium hydroxide and sodium metasilicate according to a predetermined ratio.
5. The industrial solid waste geopolymer material for building 3D printing according to any one of claims 1-2, wherein the water reducing agent is one or two of a calcium lignosulfonate water reducing agent and a polycarboxylic acid high efficiency water reducing agent.
6. The industrial solid waste geopolymer material for building 3D printing according to any one of claims 1-2, wherein the thixotropic agent is one or more of nano clay, organic bentonite and magnesium aluminum silicate.
7. The industrial solid waste geopolymer material for 3D printing in buildings according to any one of claims 1 to 2, wherein the thickening and water retaining agent is one or more of carboxymethyl hydroxyethyl cellulose, polyacrylamide and hydroxypropyl methyl cellulose ether.
8. The industrial solid waste geopolymer material for building 3D printing according to any one of claims 1-2, wherein the defoaming agent is one or both of polyethers and higher alcohols.
9. The industrial solid waste geopolymer material for building 3D printing according to any one of claims 1-2, wherein the fibers are one or more of carbon fibers, polyvinyl alcohol fibers and polypropylene fibers.
10. A method of preparing industrial solid waste geopolymer material for architectural 3D printing as defined in any one of claims 1 to 9, comprising the steps of:
pouring the flaky sodium hydroxide into a sodium metasilicate solution, and uniformly stirring to obtain an alkali activator;
weighing 30-40 parts of water according to a proportion, sequentially adding a water reducing agent, a thickening and water retaining agent and a defoaming agent, uniformly stirring by using a magnetic stirrer, and then adding the alkali activator to obtain a mixed solution;
adding slag, steel slag, silica fume, fly ash, a thixotropic agent and fibers into a paste mixer in sequence, and fully and uniformly stirring to obtain an industrial solid waste geopolymer cementing material;
and adding the mixed solution into the industrial solid waste geopolymer cementing material, and uniformly stirring to obtain the industrial solid waste geopolymer material for 3D printing of the building.
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