CN108002778B - Mold-free agent, application thereof, building component comprising mold-free agent and preparation method - Google Patents
Mold-free agent, application thereof, building component comprising mold-free agent and preparation method Download PDFInfo
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- CN108002778B CN108002778B CN201711283350.3A CN201711283350A CN108002778B CN 108002778 B CN108002778 B CN 108002778B CN 201711283350 A CN201711283350 A CN 201711283350A CN 108002778 B CN108002778 B CN 108002778B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- 239000002689 soil Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000007639 printing Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 8
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 5
- 239000010453 quartz Substances 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001110 calcium chloride Substances 0.000 claims abstract description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 4
- 239000010456 wollastonite Substances 0.000 claims abstract description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical group O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000004567 concrete Substances 0.000 abstract description 20
- 238000010146 3D printing Methods 0.000 abstract description 12
- 239000011455 calcium-silicate brick Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 24
- 239000002699 waste material Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000012669 compression test Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 239000002023 wood Substances 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
- C04B28/04—Portland 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
- 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
-
- 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
The invention provides a mould-free agent, application thereof, a building component containing the mould-free agent and a preparation method of the building component. The mould-free agent comprises the following components in percentage by mass: 16-21% of quartz powder, 1.35-1.45% of calcium chloride, 0.4-0.5% of wollastonite powder and the balance of cement. The building component is prepared by taking building residue soil, the mold-free agent and water as raw materials, mixing the raw materials, printing and molding the raw materials by using a building 3D printer, and curing the raw materials. The mould-free agent provided by the invention can enable building residue soil to be bonded, quickly solidified and enhanced in strength, realizes 3D printing of the building residue soil, reduces the construction cost and improves the construction efficiency; and the compressive strength of the 3D printed building member reaches 20-22MPa/mm2The compressive strength of the concrete is equivalent to that of C20 concrete and MU20 sand lime brick, and the concrete can meet the requirements of practical use.
Description
Technical Field
The invention belongs to the technical field of building 3D printing, and particularly relates to a mould-free agent, application thereof, a building component containing the mould-free agent and a preparation method of the building component.
Background
With the rapid development of urban construction, a high building is pulled up, so that the economic growth of China is driven, the rapid development of the construction industry is promoted, and meanwhile, a large amount of construction waste is brought. Taking a 20 ten thousand square meters residential building as an example, if the underground is two floors, the amount of the dregs generated by digging the foundation is about 15 ten thousand cubic meters. A large amount of building residue soil not only can bring huge transportation and consumption cost, but also can pollute the environment and waste resources. Therefore, the recycling and utilization rate of the construction waste is improved, the construction waste is strived to realize resource utilization, and the method becomes a necessary way for realizing circular economy and sustainable development at present in China. And the building 3D printing technology brings a new opportunity for resource utilization of building waste.
The 3D printing technology for building is to build a house by using the 3D printing technology, a huge three-dimensional printing machine is needed in the process and is connected with a computer, and the three-dimensional design model in the computer can be directly changed into a real object by superposing 'printing ink' layer by layer for spray painting according to the designed drawing and scheme in the computer. The printing ink used in the 3D printing building has unique characteristics, mainly comes from building garbage, industrial garbage and mine tailings, is combined with high-grade cement, glass fiber and the like, has the advantages of high elastoplasticity, low energy consumption, light dead weight, self-contained heat preservation, environmental protection, local material availability and the like, saves the cost of building raw materials, and is beneficial to realizing the recycling of the building garbage.
In 2016, 8 months, 183 # civilization of the Ministry of civil engineering in China is definitely proposed, and 3D printing equipment and material application are implemented in the construction industry. Until now, the building 3D printing technology has been a research hotspot in the global building industry, but is basically in the experimental stage, and there is no report that the technology can be practically applied.
Therefore, if the construction waste soil is used as the raw material and the 3D printing of the construction product can be realized, the construction cost is greatly reduced, the construction efficiency is improved, and the resource utilization of the construction waste is realized.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a mould-free agent, application thereof, a building component containing the mould-free agent and a preparation method of the building component. The mould-free agent provided by the invention can be used for bonding and quickly solidifying the building residue soil and increasing the strength, 3D printing of the building residue soil is realized, and the compressive strength of the 3D printed building member reaches 20-22MPa/mm2And the requirement of practical use can be met.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a mould-free agent, which comprises the following components in percentage by mass:
in the present invention, the quartz powder may be 16%, 16.2%, 16.5%, 16.8%, 17%, 17.2%, 17.5%, 17.8%, 18%, 18.2%, 18.5%, 18.8%, 19%, 19.2%, 19.5%, 19.8%, 20%, 20.2%, 20.5%, 20.8%, 21%, or the like in mass%.
The quartz powder contains SiO as main component2The quartz powder can improve the shape of the powder and increase the area of a specific surface. The dosage of the compound is too much,this leads to an increase in cost; too little amount results in a change in the powder properties of the molding agent.
The calcium chloride may be 1.35%, 1.36%, 1.37%, 1.38%, 1.39%, 1.4%, 1.41%, 1.42%, 1.43%, 1.44%, 1.45%, or the like, by mass.
The calcium chloride can accelerate the hardening of concrete and increase the cold resistance of building mortar, and is an excellent building antifreezing agent. Anhydrous calcium chloride can provide a certain degree of moisture to concrete due to its hygroscopic nature. Too much dosage of the water-absorbing agent can cause more water to be absorbed, so that other chemical substances reacting with water can not completely react; too little dosage can result in insignificant effects.
The wollastonite powder may be 0.4%, 0.41%, 0.42%, 0.43%, 0.44%, 0.45%, 0.46%, 0.47%, 0.48%, 0.49%, 0.5%, or the like, in mass%.
The wollastonite powder of the present invention is mainly used for improving the tensile strength and flexural strength of a building member. The cost is increased by too much dosage, and the bending resistance of the building member is not obviously improved by too little dosage.
As a preferred embodiment of the present invention, the mold-free agent further comprises 0.7-0.8 wt% (e.g., 0.7 wt%, 0.71 wt%, 0.72 wt%, 0.73 wt%, 0.74 wt%, 0.75 wt%, 0.76 wt%, 0.77 wt%, 0.78 wt%, 0.79 wt%, or 0.8 wt%) of aluminum chloride.
Aluminum chloride is very soluble in water, releases heat, and helps to accelerate concrete setting. Too much dosage, too fast setting time and difficult molding; the consumption is too small, the setting time is too slow, and the construction is influenced.
Preferably, the amorphous binder further comprises 0.095-0.105 wt% (e.g., 0.095 wt%, 0.096 wt%, 0.097 wt%, 0.098 wt%, 0.099 wt%, 0.1 wt%, 0.101 wt%, 0.102 wt%, 0.103 wt%, 0.104 wt%, or 0.105 wt%, etc.) of sodium hexametaphosphate.
The sodium hexametaphosphate has strong hygroscopicity, and can gradually absorb moisture to form a viscose substance when exposed in the air. The dosage is too much, the setting time is too fast, and the forming is difficult; the consumption is too small, the setting time is too slow, and the construction is influenced.
Preferably, the die-free agent further comprises 0.5-0.7 wt% (e.g., 0.5 wt%, 0.51 wt%, 0.52 wt%, 0.53 wt%, 0.54 wt%, 0.55 wt%, 0.56 wt%, 0.57 wt%, 0.58 wt%, 0.59 wt%, 0.6 wt%, 0.61 wt%, 0.62 wt%, 0.63 wt%, 0.64 wt%, 0.65 wt%, 0.66 wt%, 0.67 wt%, 0.68 wt%, 0.69 wt%, or 0.7 wt%, etc.) talc.
The talcum powder is mainly used for improving the dispersion performance of each component, so that each component is easy to mix uniformly. The excessive dosage of the mortar can increase the slump of mortar formed by the mortar and building residue soil and influence the forming; if the dosage is too small, the corresponding effect is not obvious.
In a preferred embodiment of the present invention, the non-molding agent further comprises 0.45-0.55 wt% (e.g., 0.45 wt%, 0.46 wt%, 0.47 wt%, 0.48 wt%, 0.49 wt%, 0.5 wt%, 0.51 wt%, 0.52 wt%, 0.53 wt%, 0.54 wt%, or 0.55 wt%) of a water reducing agent.
The water reducing agent is a concrete admixture capable of reducing the mixing water consumption under the condition of maintaining the slump constant of concrete, has a dispersing effect on cement particles, can improve the workability, reduce the unit water consumption, improve the fluidity of the concrete admixture or reduce the unit cement consumption, and saves cement. The cost is increased by too much dosage, and the effect is not obvious by too little dosage.
Preferably, the water reducing agent is a naphthalene sulfonate formaldehyde condensate.
Preferably, the non-molding agent further comprises 0.1 to 0.2 wt% (e.g., may be 0.1 wt%, 0.11 wt%, 0.12 wt%, 0.13 wt%, 0.14 wt%, 0.15 wt%, 0.16 wt%, 0.17 wt%, 0.18 wt%, 0.19 wt%, or 0.2 wt%, etc.) of a toner.
Preferably, the toner is titanium dioxide.
As a preferred technical scheme of the invention, the mould-free agent comprises the following components in percentage by mass:
as a preferable technical scheme of the invention, the cement is high-iron sulphoaluminate cement.
In the invention, cement is the main binder of the building residue soil. The high-iron sulphoaluminate cement is one of cements, has the characteristics of early strength and high strength, and is favorable for enabling the concrete to quickly establish enough strength to support the whole weight of a member when a higher building member is printed in a 3D mode. The cost is increased by using too much amount, and the strength of the slag forming member is lower by using too little amount.
In a second aspect, the invention provides an application of the above mould-free agent in 3D printing of building residue soil.
In a third aspect, the present invention provides a building component, the raw material for preparing the building component comprises: building residue soil, the above mould-free agent and water.
As a preferred technical scheme of the invention, the mass ratio of the construction residue soil, the non-mold agent and the water is 2.4 (0.9-1.0) to (0.8-1); for example, it may be 2.4:0.9:1, 2.4:0.9:0.95, 2.4:0.9:0.9, 2.4:0.9:0.85, 2.4:0.9:0.8, 2.4:0.95:1, 2.4:0.95:0.95, 2.4:0.95:0.9, 2.4:0.95:0.85, 2.4:0.95:0.8, 2.4:1:1, 2.4:1:0.95, 2.4:1:0.9, 2.4:1:0.85, 2.4:1:0.8, etc.
Ordinary concrete has strong fluidity when not cured, and a template is required to fix the shape when molding. The non-mold agent provided by the invention is uniformly mixed with the building residue soil and water according to the proportion, so that the formed mortar does not flow, a template is not needed during molding, and the non-mold agent can be directly printed into building products such as enclosing walls, guardrails, landscapes, safety warning boards and the like in a 3D manner.
In a fourth aspect, the present invention provides a method for preparing the above building component, wherein the method comprises: mixing the raw materials according to a formula, printing and forming by using a building 3D printer, and curing to obtain the building component.
As a preferred technical scheme of the invention, the mixing is carried out in a high-speed mixer and a low-speed mixer;
preferably, the stirring speed of the high-speed mixer and the low-speed mixer is 20-80r/min, such as 20r/min, 30r/min, 40r/min, 50r/min, 60r/min, 70r/min or 80 r/min; the stirring time is 1-5min, and can be, for example, 1min, 1.5min, 2min, 2.5min, 3min, 3.5min, 4min, 4.5min or 5 min.
Compared with the prior art, the invention has the following beneficial effects:
the mould-free agent provided by the invention can enable building residue soil to be bonded, quickly solidified and enhanced in strength, so that the building residue soil is used for replacing raw materials such as bricks, wood and light steel, and building components are printed in a 3D mode. Not only reduces the temporary construction cost, but also improves the construction efficiency by 50 times compared with the traditional manual construction method, and has more outstanding advantages particularly in the aspect of processing and producing special-shaped and special-shaped building brand marks. Moreover, the compressive strength of the building member printed by 3D without the mould agent provided by the invention reaches 20-22MPa/mm2The compressive strength of the concrete is equivalent to that of C20 concrete and MU20 sand lime brick, and the concrete can meet the requirements of practical application.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The mold-free agent comprises the following components in percentage by mass:
the building member test block is prepared by the mold-free agent, and the method comprises the following steps:
adding the building residue soil, the mold-free agent and water into a high-speed and low-speed mixer according to the mass ratio of 2.4:0.9:1, and stirring and mixing for 5min at the rotating speed of 20r/min to form mortar; and then printing and forming by using a building 3D printer, and performing standard curing for 28 days to form a building component test block.
According to the standard GB/T50081-2002 for mechanical property test of common concrete, the building element test block is subjected to compression test, and the compression strength is 20MPa/mm2。
Example 2
The mold-free agent comprises the following components in percentage by mass:
the building member test block is prepared by the mold-free agent, and the method comprises the following steps:
adding the building residue soil, the mold-free agent and water into a high-speed and low-speed mixer according to the mass ratio of 2.4:0.9:0.9, and stirring and mixing for 1min at the rotating speed of 80r/min to form mortar; and then printing and forming by using a building 3D printer, and performing standard curing for 28 days to form a building component test block.
According to the standard GB/T50081-2002 for mechanical property test of common concrete, the building element test block is subjected to compression test, and the compression strength is 20.7MPa/mm2。
Example 3
The mold-free agent comprises the following components in percentage by mass:
the building member test block is prepared by the mold-free agent, and the method comprises the following steps:
adding the building residue soil, the mold-free agent and water into a high-speed and low-speed mixer according to the mass ratio of 2.4:0.9:0.8, and stirring and mixing for 4min at the rotating speed of 30r/min to form mortar; and then printing and forming by using a building 3D printer, and performing standard curing for 28 days to form a building component test block.
According to the standard GB/T50081-2002 for mechanical property test of common concrete, the building element test block is subjected to compression test, and the compression strength is 21.8MPa/mm2。
Example 4
The mold-free agent comprises the following components in percentage by mass:
the building member test block is prepared by the mold-free agent, and the method comprises the following steps:
adding the building residue soil, the mold-free agent and water into a high-speed and low-speed mixer according to the mass ratio of 2.4:0.95:1, and stirring and mixing for 1.5min at the rotating speed of 60r/min to form mortar; and then printing and forming by using a building 3D printer, and performing standard curing for 28 days to form a building component test block.
According to the standard GB/T50081-2002 for mechanical property test of common concrete, the building element test block is subjected to compression test, and the compression strength is 20.6MPa/mm2。
Example 5
The mold-free agent comprises the following components in percentage by mass:
the building member test block is prepared by the mold-free agent, and the method comprises the following steps:
adding the building residue soil, the mold-free agent and water into a high-speed and low-speed mixer according to the mass ratio of 2.4:1:0.8, and stirring and mixing for 2min at the rotating speed of 50r/min to form mortar; and then printing and forming by using a building 3D printer, and performing standard curing for 28 days to form a building component test block.
According to the standard GB/T50081-2002 for mechanical property test of common concrete, the building element test block is subjected to compression test, and the compression strength is 20MPa/mm2。
Example 6
The mold-free agent comprises the following components in percentage by mass:
the building member test block is prepared by the mold-free agent, and the method comprises the following steps:
adding the building residue soil, the mold-free agent and water into a high-speed and low-speed mixer according to the mass ratio of 2.4:1:1, and stirring and mixing for 2min at the rotating speed of 40r/min to form mortar; and then printing and forming by using a building 3D printer, and performing standard curing for 28 days to form a building component test block.
According to the standard GB/T50081-2002 for testing the mechanical properties of the common concrete, the building element test block is subjected to a compression test, and the compression strength is 21.5MPa/mm2。
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (6)
1. A 3D printed building element, characterized in that the building element is prepared from raw materials comprising: building residue soil, a mold-free agent and water;
the mould-free agent comprises the following components in percentage by mass:
16-21% of quartz powder;
1.35 to 1.45 percent of calcium chloride;
wollastonite powder 0.4-0.5%;
0.7 to 0.8 percent of aluminum chloride;
0.095 to 0.105 percent of sodium hexametaphosphate;
0.5 to 0.7 percent of talcum powder;
0.45 to 0.55 percent of water reducing agent;
0.1 to 0.2 percent of toner;
the balance being cement;
the cement is high-iron sulphoaluminate cement;
the mass ratio of the construction residue soil, the mold-free agent and the water is 2.4 (0.9-1) to 0.8-1.
2. The building element according to claim 1, characterized in that the water reducing agent is a naphthalene sulphonate formaldehyde condensate.
3. The building element according to claim 1, characterized in that the toner is titanium dioxide.
4. A method for the production of a building element according to any one of claims 1-3, characterized in that the method for the production is: mixing the raw materials into mortar according to a formula, printing and molding by using a building 3D printer, and curing to obtain the building component.
5. The method of claim 4, wherein the mixing is performed in a high and low speed blender.
6. The preparation method of claim 5, wherein the stirring speed of the high-speed mixer and the low-speed mixer is 20-80r/min, and the stirring time is 1-5 min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711283350.3A CN108002778B (en) | 2017-12-07 | 2017-12-07 | Mold-free agent, application thereof, building component comprising mold-free agent and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711283350.3A CN108002778B (en) | 2017-12-07 | 2017-12-07 | Mold-free agent, application thereof, building component comprising mold-free agent and preparation method |
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| Publication Number | Publication Date |
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| CN108002778A CN108002778A (en) | 2018-05-08 |
| CN108002778B true CN108002778B (en) | 2020-10-30 |
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| CN109278154A (en) * | 2018-10-10 | 2019-01-29 | 深圳大学 | 3D printing clay solid brick rapid shaping control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891891A (en) * | 2015-05-06 | 2015-09-09 | 同济大学 | 3D printing cement-based material and preparation method thereof |
| US9388078B2 (en) * | 2011-09-20 | 2016-07-12 | The Regents Of The University Of California | 3D printing powder compositions and methods of use |
| CN106699039A (en) * | 2017-01-05 | 2017-05-24 | 马义军 | Building 3D printing ink and use thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9388078B2 (en) * | 2011-09-20 | 2016-07-12 | The Regents Of The University Of California | 3D printing powder compositions and methods of use |
| CN104891891A (en) * | 2015-05-06 | 2015-09-09 | 同济大学 | 3D printing cement-based material and preparation method thereof |
| CN106699039A (en) * | 2017-01-05 | 2017-05-24 | 马义军 | Building 3D printing ink and use thereof |
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