CN109534757A - A kind of building 3D printing rapid shaping composite material - Google Patents
A kind of building 3D printing rapid shaping composite material Download PDFInfo
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- CN109534757A CN109534757A CN201910028530.XA CN201910028530A CN109534757A CN 109534757 A CN109534757 A CN 109534757A CN 201910028530 A CN201910028530 A CN 201910028530A CN 109534757 A CN109534757 A CN 109534757A
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- rapid prototyping
- cement
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- 239000002131 composite material Substances 0.000 title claims abstract description 59
- 238000010146 3D printing Methods 0.000 title claims abstract description 58
- 238000007493 shaping process Methods 0.000 title description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- 239000004568 cement Substances 0.000 claims abstract description 36
- 239000011575 calcium Substances 0.000 claims abstract description 27
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 27
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 23
- 239000003381 stabilizer Substances 0.000 claims abstract description 18
- 239000000701 coagulant Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000007639 printing Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract 6
- 239000010881 fly ash Substances 0.000 claims abstract 6
- 239000003607 modifier Substances 0.000 claims abstract 4
- 239000000843 powder Substances 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical group [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 9
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 9
- 229910021538 borax Inorganic materials 0.000 claims description 7
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical group [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 4
- 229920005646 polycarboxylate Polymers 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims 2
- 238000005345 coagulation Methods 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 22
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 230000008961 swelling Effects 0.000 description 21
- 230000001112 coagulating effect Effects 0.000 description 15
- 230000001105 regulatory effect Effects 0.000 description 15
- 239000004567 concrete Substances 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 10
- 239000002253 acid Substances 0.000 description 8
- 150000007513 acids Chemical class 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 238000004088 simulation Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- FYSNRPHRLRVCSW-UHFFFAOYSA-N dodecasodium;tetraborate Chemical class [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-].[O-]B([O-])[O-] FYSNRPHRLRVCSW-UHFFFAOYSA-N 0.000 description 2
- 229910001653 ettringite Inorganic materials 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 230000009974 thixotropic effect Effects 0.000 description 2
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010998 test method 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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
一种建筑3D打印快速成型复合材料。按重量份计，所述复合材料包括以下原料：水泥300‑450份、矿渣微粉80‑125份、骨料460‑540份、减水剂0.2‑0.8份、复合调凝剂1.0‑1.9份和体积稳定剂45‑63份；所述复合调凝剂由促凝剂和缓凝剂组成，其中，所述促凝剂和缓凝剂的重量份比为：(0.4‑0.8)份：(0.6‑1.1)份；所述体积稳定剂由(25‑35)份高钙粉煤灰和(20‑28)份CSA膨胀剂组成。本发明提出的复合材料制备出的打印材料黏结性好，稳定性强，具有良好的出泵形态保持能力和黏结性能，使打印的建筑物具有良好的形态和体积稳定性。A rapid prototyping composite material for architectural 3D printing. In parts by weight, the composite material includes the following raw materials: 300-450 parts of cement, 80-125 parts of slag micropowder, 460-540 parts of aggregates, 0.2-0.8 parts of water reducing agent, 1.0-1.9 parts of composite setting modifier and 45-63 parts of volume stabilizer; the composite coagulating agent is composed of a coagulant and a retarder, wherein the weight ratio of the coagulant and the retarder is: (0.4-0.8) part: (0.6-1.1 ) parts; the volume stabilizer is composed of (25-35) parts of high calcium fly ash and (20-28) parts of CSA expansion agent. The printing material prepared by the composite material provided by the invention has good adhesion, strong stability, and good shape retention ability and adhesion performance of the pump, so that the printed building has good shape and volume stability.
Description
Technical field
The invention belongs to the field of building materials, in particular to a kind of building 3D printing rapid shaping composite material.
Background technique
Currently, the common building concrete of building 3D printing material is since the presetting period is 6~10h, curing time is more than
24 hours, it is unable to satisfy the requirement of 3D printing.Gypsum-based construction material has good quick-drying and intensity in paint finishing, still
Such as setting time the shortcomings that gypsum-based construction material is fast, and water absorption rate is relatively high, and the reasons such as apt to deteriorate are affirmed in 3D printing
There can be many disadvantages.Quick hardening cement is used for the intensity that 3D printing is mainly highly basic excited cement, the cement that can also allow certain in this way
Intensity on come fast, but the dusting in later period etc. is all very big problem.Material is in short-term during not being able to satisfy 3D printing
The performance requirement of interior rapid condensation；And generally in mobility, the vertical bulk property being unable to satisfy during 3D printing, so
3D printing materials'use can not be used as.Document " preparation and application study of concrete base building 3D printing material " provides a kind of suitable
It builds jointly and builds the cement-base composite material that 3D printing uses, solve to be mostly in the prior art organic material for the material of 3D printing technique
The problem of material；It is long and generally in mobility, without thixotropic property, not applicable also to solve existing common cement-base condensation of materials time
In the 3D printing process the technical issues of.However, it is considered herein that this concrete base building 3D printing material there are presetting period controls
Amplitude range processed is excessive, and those skilled in the art are not easy to grasp, and fails the body to concrete base building 3D printing material material
Product stabilization makes in-depth study.Therefore, it is necessary to study new building 3D printing rapid prototyping materials.
Summary of the invention
In order to solve the above-mentioned problems of the prior art, the present invention provides a kind of building 3D printing rapid shaping is compound
Material, composite material proposed by the present invention can guarantee that the cohesiveness prepared is good, and stability is strong, excellent in mechanical performance, make to beat
The building of print keeps the printed material of good form and volume stability.
An object of the present invention is to provide a kind of building 3D printing rapid shaping composite material.
The second object of the present invention is to provide a kind of application method for building 3D printing rapid shaping composite material.
The third object of the present invention is to provide answering for above-mentioned building 3D printing rapid shaping composite material and preparation method
With.
For achieving the above object, the invention discloses following technical proposals:
Firstly, the present invention discloses a kind of building 3D printing rapid shaping composite material, by weight, the composite material
Including following raw material: 300-450 parts of cement, 460-540 parts of aggregate, 0.2-0.8 parts of water-reducing agent, is answered at 80-125 parts of slag micropowder
Close adjustable solidification agent 1.0-1.9 parts and volume stabilizer 45-63 parts；The compound agent of regulating coagulating is made of coagulant and retarder, wherein
The weight part ratio of the coagulant and retarder are as follows: (0.4-0.8) part: (0.6-1.1) part；The volume stabilizer is by high-calcium powder
Coal ash and CSA swelling agent composition, wherein the weight part ratio of the high-calcium fly ass and CSA swelling agent are as follows: (25-35) part: (20-
28) part.
Further, by weight, the composite material includes following raw material: 400-450 parts of cement, slag micropowder
80-100 parts, 460-500 parts of aggregate, 0.4-0.8 parts of water-reducing agent, 1.4-1.8 parts of compound agent of regulating coagulating and volume stabilizer 45-58
Part；The compound agent of regulating coagulating is made of coagulant and retarder, wherein the coagulant is 0.6-0.8 parts, and the retarder is
0.8-1.0 parts；The volume stabilizer is made of high-calcium fly ass and CSA swelling agent, wherein the high-calcium fly ass is 30-
33 parts, the CSA swelling agent is 25-28 parts.
Further, the cement is sulphate aluminium cement, and 42.5R quick hardening sulphoaluminate cement is due to than normal silicate
Rate of set it is faster higher preferably as cementitious material with early strength.
Further, the fineness of the slag micropowder is 420-500m2/ kg, the main function of slag micropowder are can to mention
Early strong and improvement concrete certain characteristics of high cement, concrete, such as easy and property, early strong, the reduction heat of hydration of raising.
Further, the aggregate is made of coarse aggregate and fine aggregate；Preferably, the coarse aggregate is that partial size is less than 5mm
Stone, the fine aggregate be partial size 0.25-0.5mm middle sand.
Further, the water-reducing agent is polycarboxylate water-reducer, such as: polycarboxylic acids PC water-reducing agent.In the preparation of concrete
Polycarboxylate water-reducer appropriate is added in the process, good water-reducing effect can not only be reached, and lose in terms of the slump
It is relatively smaller；Meanwhile this water-reducing agent and cementitious material have good adaptability, and without any side effects, will not generate
Pollution, may be implemented effective improvement to endurance performance of concrete.
Further, in the compound agent of regulating coagulating, the coagulant is lithium carbonate, and the retarder is sodium tetraborate.3D
The continuity of printing and safety are mainly by the control of the setting time of material and intensity, to the weight of setting time controlled especially
It wants.Using coagulant, retarder, the setting time of material can be effectively controlled.It is ideal that the rush of coagulant lithium carbonate coagulates effect, can be with
While shortening setting time, early strength is improved, and very little is influenced on later strength.Retarder sodium tetraborate is fast hard
The more satisfactory retarder of sulphate aluminium cement, can not only play deferred action, but also early strength can be improved, and strong to 28 days
Degree has no adverse effects.
The volume stabilizer proposed by the present invention being made of high-calcium fly ass and CSA swelling agent can guarantee for preparing beats
Print material cohesiveness is good, and stability is strong, has good pump form holding capacity and bond performance out, has the building of printing
There are good form and volume stability.This is because: the present invention is using the f-CaO aquation in high-calcium fly ass as expansion sources, true
It ensures public security under the premise of qualitative qualification, makes full use of the expansion characteristics of high-calcium fly ass, can compensate for the plastic shrinkage of pump concrete
With the chemical shrinkage of early stage, CSA swelling agent forms uniform ettringite and generates expansion master after being incorporated into cement
Occur to have since crystal growth of entringite during hydration and hardening penetrates ambient substance to outgrowth in crystallization stage
There are certain crystallization pressure and water suction swelling deformation, be changed into Behavior of Hardened Cement Paste under constraint condition makes Behavior of Hardened Cement Paste knot from compression
Structure has preferable tension deformability.After adding CSA swelling agent, entringite is generated in hydrated cementitious system, is filled in original
Water-filling space in system, keeps Behavior of Hardened Cement Paste finer and close, expansion performance is more preferably played.Body of cement after admixture CSA swelling agent
It is that mesopore content is increased slightly, there are more unhydrated cement granules, while there are also the more ettringite phases that do not grow up
Mutually intersect growth, keep paste microstructure more closely knit, to further promote the mechanical property of composite material.
Again, the present invention discloses the application method of above-mentioned building 3D printing rapid shaping composite material, includes the following steps:
(1) cement, slag micropowder, aggregate and high-calcium fly ass are put into powder stirrer, stirred evenly, it is dry to form premix
Powder；
(2) premix dry powder is sent into agitating device, is mixed with water, water-reducing agent, compound agent of regulating coagulating and CSA is then added
Swelling agent can be printed after mixing evenly.
Finally, the present invention discloses above-mentioned building 3D printing rapid shaping composite material and preparation method in the field of construction
Application.
Compared with prior art, the present invention achieve it is following the utility model has the advantages that
(1) volume stabilizer proposed by the present invention being made of high-calcium fly ass and CSA swelling agent can guarantee to prepare
Printed material cohesiveness it is good, stability is strong, have it is good go out pump form holding capacity and bond performance, make the building of printing
Object has good form and volume stability.
(2) the building setting time for carrying out 3D printing preparation using composite material of the present invention is short, and thixotropic property is good, resistance to compression
Intensity is high, is highly suitable for 3D printing.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the common building concrete of existing building 3D printing material is due to the presetting period
It is 6~10h, curing time is more than 24 hours, is not able to satisfy the performance of the rapid condensation in a short time of material during 3D printing
It is required that.For this purpose, the present invention proposes a kind of building 3D printing rapid shaping composite material, With reference to embodiment to this hair
Bright further explanation.
In the following example, the high-calcium fly ass is purchased from the industrial building materials Co., Ltd of Shandong marial rocks；The slag micropowder
Purchased from Shandong prosperity source slag micropowder Co., Ltd.
Embodiment 1
1, a kind of building 3D printing rapid shaping composite material, by weight, the composite material includes following raw material:
400 parts of 42.5R quick hardening sulphoaluminate cement；
80 parts of slag micropowder, fineness 450m2/kg；
200 parts of coarse aggregate (stone that partial size is less than 5mm)；
300 parts of fine aggregate (the middle sand of partial size 0.25-0.5mm)；
0.8 part of polycarboxylic acids PC water-reducing agent；
Compound agent of regulating coagulating is made of 0.6 part of lithium carbonate and 0.8 part of sodium tetraborate；
Volume stabilizer is made of 30 parts of high-calcium fly ass and 28 parts of CSA swelling agents.
2, using the method for the present embodiment building 3D printing rapid shaping Simulation of Composite preparation 3D printing building, including
Following steps:
(1) above-mentioned in proportion that cement, slag micropowder, aggregate and high-calcium fly ass are put into powder stirrer, it stirs evenly,
Form premix dry powder；
(2) will premix dry powder be sent into agitating device, add water (ratio of mud 0.35), stir 40s, then be added water-reducing agent,
Compound agent of regulating coagulating and CSA swelling agent stir 30s, obtain printing slurry；
(3) printing slurry in step (3) is placed in extruder, the revolving speed of extruder be 400r/s to get.
Embodiment 2
1, a kind of building 3D printing rapid shaping composite material, by weight, the composite material includes following raw material:
450 parts of 42.5R quick hardening sulphoaluminate cement；
100 parts of slag micropowder, fineness 500m2/kg；
220 parts of coarse aggregate (stone that partial size is less than 5mm)；
240 parts of fine aggregate (the middle sand of partial size 0.25-0.5mm)；
0.4 part of polycarboxylic acids PC water-reducing agent；
Compound agent of regulating coagulating is made of 0.8 part of lithium carbonate and 1.0 parts of sodium tetraborates；
Volume stabilizer is made of 33 parts of high-calcium fly ass and 25 parts of CSA swelling agents.
2, using the method for the present embodiment building 3D printing rapid shaping Simulation of Composite preparation 3D printing building, including
Following steps:
(1) above-mentioned in proportion that cement, slag micropowder, aggregate and high-calcium fly ass are put into powder stirrer, it stirs evenly,
Form premix dry powder；
(2) will premix dry powder be sent into agitating device, add water (ratio of mud 0.32), stir 30s, then be added water-reducing agent,
Compound agent of regulating coagulating and CSA swelling agent stir 30s, obtain printing slurry；
(3) printing slurry in step (3) is placed in extruder, the revolving speed of extruder be 350r/s to get.
Embodiment 3
1, a kind of building 3D printing rapid shaping composite material, by weight, the composite material includes following raw material:
300 parts of 42.5R quick hardening sulphoaluminate cement；
125 parts of slag micropowder, fineness 500m2/kg；
250 parts of coarse aggregate (stone that partial size is less than 5mm)；
290 parts of fine aggregate (the middle sand of partial size 0.25-0.5mm)；
0.2 part of polycarboxylic acids PC water-reducing agent；
Compound agent of regulating coagulating is made of 0.4 part of lithium carbonate and 0.6 part of sodium tetraborate；
Volume stabilizer is made of 25 parts of high-calcium fly ass and 20 parts of CSA swelling agents.
2, using the method for the present embodiment building 3D printing rapid shaping Simulation of Composite preparation 3D printing building, including
Following steps:
(1) above-mentioned in proportion that cement, slag micropowder, aggregate and high-calcium fly ass are put into powder stirrer, it stirs evenly,
Form premix dry powder；
(2) will premix dry powder be sent into agitating device, add water (ratio of mud 0.32), stir 30s, then be added water-reducing agent,
Compound agent of regulating coagulating and CSA swelling agent stir 30s, obtain printing slurry；
(3) printing slurry in step (3) is placed in extruder, the revolving speed of extruder be 300r/s to get.
Embodiment 4
1, a kind of building 3D printing rapid shaping composite material, by weight, the composite material includes following raw material:
420 parts of 42.5R quick hardening sulphoaluminate cement；
90 parts of slag micropowder, fineness 420m2/kg；
200 parts of coarse aggregate (stone that partial size is less than 5mm)；
320 parts of fine aggregate (the middle sand of partial size 0.25-0.5mm)；
0.6 part of polycarboxylic acids PC water-reducing agent；
Compound agent of regulating coagulating is made of 0.8 part of lithium carbonate and 1.1 parts of sodium tetraborates；
Volume stabilizer is made of 35 parts of high-calcium fly ass and 28 parts of CSA swelling agents.
2, using the method for the present embodiment building 3D printing rapid shaping Simulation of Composite preparation 3D printing building, including
Following steps:
(1) above-mentioned in proportion that cement, slag micropowder, aggregate and high-calcium fly ass are put into powder stirrer, it stirs evenly,
Form premix dry powder；
(2) will premix dry powder be sent into agitating device, add water (ratio of mud 0.32), stir 30s, then be added water-reducing agent,
Compound agent of regulating coagulating and CSA swelling agent stir 30s, obtain printing slurry；
(3) printing slurry in step (3) is placed in extruder, the revolving speed of extruder be 500r/s to get.
Experimental example 1
1, a kind of building 3D printing rapid shaping composite material, by weight, the composite material includes following raw material:
400 parts of 42.5R quick hardening sulphoaluminate cement；
80 parts of slag micropowder, fineness 450m2/kg；
200 parts of coarse aggregate (stone that partial size is less than 5mm)；
300 parts of fine aggregate (the middle sand of partial size 0.25-0.5mm)；
0.8 part of polycarboxylic acids PC water-reducing agent；
Compound agent of regulating coagulating is made of 0.6 part of lithium carbonate and 0.8 part of sodium tetraborate.
Experimental example 2
1, a kind of building 3D printing rapid shaping composite material, by weight, the composite material includes following raw material:
400 parts of 42.5R quick hardening sulphoaluminate cement；
80 parts of slag micropowder, fineness 450m2/kg；
200 parts of coarse aggregate (stone that partial size is less than 5mm)；
300 parts of fine aggregate (the middle sand of partial size 0.25-0.5mm)；
0.8 part of polycarboxylic acids PC water-reducing agent；
Compound agent of regulating coagulating is made of 0.6 part of lithium carbonate and 0.8 part of sodium tetraborate.
Volume stabilizer is made of 30 parts of high-calcium fly ass.
Experimental example 3
1, a kind of building 3D printing rapid shaping composite material, by weight, the composite material includes following raw material:
400 parts of 42.5R quick hardening sulphoaluminate cement；
80 parts of slag micropowder, fineness 450m2/kg；
200 parts of coarse aggregate (stone that partial size is less than 5mm)；
300 parts of fine aggregate (the middle sand of partial size 0.25-0.5mm)；
0.8 part of polycarboxylic acids PC water-reducing agent；
Volume stabilizer is made of 28 parts of CSA swelling agents.
Performance detection:
(1) national standard GB/T 50080 " Standard for test methods of properties of ordinary concrete mixture standard " testing example 1-4 is used
With the performance of the sample of the building 3D printing rapid shaping composite material preparation of test example 1-3, the results are shown in Table 1.
Table 1
(2) volume stability of the building 3D printing rapid shaping composite material of testing example 1-3, as a result such as 2 institute of table
Show.
Table 2
From Table 2, it can be seen that building 3D printing rapid shaping composite material of the invention has good volume stability
Property, this is because invention using the f-CaO aquation in high-calcium fly ass as expansion sources, makes full use of the expansion of high-calcium fly ass special
Property, it can compensate for the plastic shrinkage of pump concrete and the chemical shrinkage of early stage, and after adding CSA swelling agent, in hydrated cementitious body
Entringite is generated in system, is filled in the water-filling space in substance system, is kept Behavior of Hardened Cement Paste finer and close, expansion performance is more preferably sent out
It waves.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art
For member, various changes and changes are possible in this application.Within the spirit and principles of this application, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within the scope of protection of this application.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528884A (en) * | 2019-08-30 | 2019-12-03 | 山东大学 | A kind of 3D printing device and method suitable for small-size concrete component, application |
| CN112759338A (en) * | 2021-01-13 | 2021-05-07 | 湖北工业大学 | Slag-based cementing material for 3D printing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150158766A1 (en) * | 2013-12-06 | 2015-06-11 | Georgia-Pacific Gypsum Llc | Gypsum composites containing cementitious materials and methods |
| CN108658546A (en) * | 2018-06-05 | 2018-10-16 | 北京美斯顿科技开发有限公司 | A kind of 3D printing construction material and its application |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150158766A1 (en) * | 2013-12-06 | 2015-06-11 | Georgia-Pacific Gypsum Llc | Gypsum composites containing cementitious materials and methods |
| CN108658546A (en) * | 2018-06-05 | 2018-10-16 | 北京美斯顿科技开发有限公司 | A kind of 3D printing construction material and its application |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528884A (en) * | 2019-08-30 | 2019-12-03 | 山东大学 | A kind of 3D printing device and method suitable for small-size concrete component, application |
| CN112759338A (en) * | 2021-01-13 | 2021-05-07 | 湖北工业大学 | Slag-based cementing material for 3D printing and preparation method thereof |
| CN112759338B (en) * | 2021-01-13 | 2022-04-29 | 湖北工业大学 | A kind of slag-based cementitious material for 3D printing and preparation method thereof |
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