CN108164215A - It is a kind of for lightweight aggregate concrete of 3D printing and preparation method and application - Google Patents

It is a kind of for lightweight aggregate concrete of 3D printing and preparation method and application Download PDF

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Publication number
CN108164215A
CN108164215A CN201711434195.0A CN201711434195A CN108164215A CN 108164215 A CN108164215 A CN 108164215A CN 201711434195 A CN201711434195 A CN 201711434195A CN 108164215 A CN108164215 A CN 108164215A
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CN
China
Prior art keywords
concrete
lightweight aggregate
early strength
printing
strength agent
Prior art date
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Pending
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CN201711434195.0A
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Chinese (zh)
Inventor
袁勇
陶亚欣
姜伟
崔维久
王孝云
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Tongji University
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Tongji University
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Priority to CN201711434195.0A priority Critical patent/CN108164215A/en
Publication of CN108164215A publication Critical patent/CN108164215A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/001Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use 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
    • C04B18/02Agglomerated materials, e.g. artificial aggregates
    • C04B18/027Lightweight materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00181Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The present invention relates to a kind of lightweight aggregate concrete for 3D printing and its preparation and application, which includes the component of following parts by weight:100 parts of portland cement;30 parts of flyash;1~5 part of silicon ash;20~45 parts of water;1~5 part of accelerator;1~5 part of early strength agent;1~3 part of flocculant;80~200 parts of lightweight aggregate; during preparation; haydite is first mixed to get lightweight aggregate; then portland cement, flyash, silicon ash, accelerator and early strength agent are mixed to get mixed powder; finally lightweight aggregate and mixed powder are uniformly mixed and add in water, the coagulation being prepared and the raw material that can be used as 3D printer construction concrete structure.Compared with prior art, own wt of the present invention is light, and substantially reducing print procedure, concrete to the pressure of lower-layer concrete, reduces the plastic deformation of bottom concrete at the middle and upper levels, the possibility to collapse is reduced simultaneously, and the concrete can make concrete material have the function of heat-insulated and heat preservation.

Description

It is a kind of for lightweight aggregate concrete of 3D printing and preparation method and application
Technical field
The present invention relates to technical field of civil engineering, and in particular to a kind of lightweight aggregate concrete and its system for 3D printing Preparation Method and application.
Background technology
Concrete is that usage amount maximum, construction material widest in area, development have the history of 200 years in Contemporary Architecture, The huge architecture engineering material of contemporary society's usage amount is become, architectural engineering has been contributed huge.But traditional architectural technology In, the use of concrete can generate very a high proportion of building waste again.China generates about 600,000,000 tons of building waste per annual meeting.Add Human cost increase, the building trade high as concrete usage amount will welcome primary huge challenge.It is therefore desirable to In building trade, develop a kind of novel construction material and construction technology substitutes traditional construction technology, so as to reduce with mixed The production quantity of building waste based on solidifying soil.In recent years, it the emerging 3D printing concrete for combining 3D printing technique and its applies The appearance of work technology, become be building field a big innovation, be constructed to main feature to increase material and reduce coagulation great soil group building The production quantity of rubbish will start the technological revolution in future architecture field.Concrete 3D printing technique carries out three by computer Dimension modeling, is successively printed as concrete structure using control of correspondent program mechanical equipment, formwork is eliminated in building course and is torn open The complex process of mould, greatly improves production efficiency.
But print structure in forming process without mould support, this requires concrete mix needs bear to conduct oneself with dignity And the effect of other loads, it is condensed rapidly under the conditions of indeformable, reaches target strength.Conventional concrete material is not The requirement of 3D printing technique can be met, the selection of concrete material and proportioning are urgently improved.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of stacking performance is good Lightweight aggregate concrete for 3D printing and preparation method and application.
The purpose of the present invention can be achieved through the following technical solutions:A kind of lightweight aggregate concrete for 3D printing, The concrete includes the component of following parts by weight:
Portland cement is the most common cement of engineering, add a certain amount of flyash and silicon ash can in concrete shape Into more closely knit structure, so as to improve the mechanical property of concrete, aggregate is the skeleton of concrete, and this patent considers that printing is set Standby line size and jet size, only with fine aggregate, meanwhile, concrete is made further to meet by the adjusting of additive and beaten The requirement of print, wherein, additive includes accelerator, early strength agent and flocculant.
Preferably, the model 42.5R of the portland cement, the grade of the flyash is I grade, the silicon ash Grade is I grade.42.5R portland cement have certain early strong effect so that concrete have shorter initial set and final set Time, the concrete printed can be quickly molded.I grades of flyash and silicon ash has the surface area of bigger, and activity is stronger. Adding coal ash and silicon ash can fill up the gap of cement granules, and concrete structure is made to have more preferably performance.
Preferably, the accelerator be alkali-free liquid accelerator, including using aluminum sulfate as key component accelerator, Using aluminum sulfate and sodium aluminate as the accelerator of key component, using aluminum sulfate and aluminium hydroxide as the accelerator of key component, with sulphur Sour aluminium and sodium fluoride are the accelerator of key component or the accelerator using aluminum sulfate and magnesium sulfate as key component.Accelerator can be with Greatly shorten presetting period and the final setting time of concrete, make concrete i.e. plastic after printing head extrusion.
Preferably, the early strength agent for inorganic salts early strength agent, organic compound early strength agent or compound early strength agent and One kind in early strength water-reducing agent, wherein, the inorganic salts early strength agent is includes chloride, sulfate, nitrite or carbonic acid The additive with early strength function of salt;The organic compound early strength agent be comprising methanol, ethyl alcohol, ethylene glycol, triethanolamine, The additive with early strength function of triisopropanolamine, diethanol amine or urea, the compound early strength agent and early strength water-reducing agent To include the mixing early strength agent simultaneously comprising inorganic salts early strength agent and organic compound early strength agent.Early strength agent can improve coagulation The early strength of soil makes concrete that there is enough intensity to form self-supporting.
Preferably, the flocculant for watersoluble organic polymer, fine inorganic material, organic water soluble flocculant or Organic material lotion, wherein, the watersoluble organic polymer include ferry grease, amylan, poly- atmosphere ethylene, polyacrylamide, Carboxy vinyl polymer or polyvinyl alcohol, these materials can increase the viscosity of fresh concrete, the fine inorganic material packet The water holding capacity of fresh concrete can be increased by including such as silicon ash, alumina silicate, bentonite or diatomite, these materials, increase density, The organic water soluble flocculant includes styrene copolymerisation object, natural gum, water-soluble polysaccharide polymer or prestige with alkyl Blue resin, these materials can also increase the viscosity of fresh concrete, and the organic material lotion includes acrylic emulsion or paraffin Lotion, these materials can improve the attraction between cement granules.
Preferably, the lightweight aggregate includes the haydite that grain size is 0~5mm, wherein, grain size is 3~5mm haydites, grain size It is (20~40) for the mass ratio that 1~3mm haydites and grain size are 0~1mm haydites:(60~80):(30~50).3D printing coagulation Soil needs the requirement for meeting self-supporting, can mitigate the dead weight of concrete using aglite, so as to better self-supporting Property.Meanwhile it can ensure that the grading of lightweight aggregate is good using the mass ratio.
Preferably, the haydite includes haydites of book structure or lytag.
A kind of preparation method for the lightweight aggregate concrete for being used for 3D printing as described above, including following steps:
(1) haydite of different-grain diameter is uniformly mixed, it is spare obtains lightweight aggregate;By portland cement, flyash, silicon ash, Accelerator, early strength agent, flocculant are uniformly mixed, and mixed powder is made;
(2) lightweight aggregate and mixed powder made from step (1) are uniformly mixed, obtain mixed raw material;
(3) before 3D printing, mixed raw material with water is mixed, is stirring evenly and then adding into and is printed into 3D printer.
Powder is mixed first, is conducive to the practical application of engineering, powder can be filled directly after being mixed in factory Bag, can be printed after engineering site plus water mix.
A kind of application for the lightweight aggregate concrete for being used for 3D printing as described above, it is mixed which is used as 3D printer construction The raw material of Xtah Crude Clay structure, the concrete structure include the lightweight wall of insulation.
Compared with prior art, beneficial effects of the present invention are embodied in:
(1) own wt is compared with traditional concrete material, significantly reduces 10%~30%, is substantially reduced and was printed Concrete to the pressure of lower-layer concrete, reduces the plastic deformation of bottom concrete, while reduce what is collapsed to journey at the middle and upper levels Possibility;
(2) since, there are hole, which has the function of heat-insulated and heat preservation in lightweight aggregate.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation Example.
Embodiment 1
A kind of lightweight aggregate concrete for 3D printing includes the raw material of following parts by weight:42.5R Portland cements 100 parts, 30 parts, I grades 1 part of silicon ashes of I grades of flyash, 20 parts of water, 2 parts of accelerator, 2 parts of early strength agent, 1 part of flocculant, lightweight aggregate 100 Part.
The raw material and its weight ratio of lightweight aggregate be:3-5mm lytags:1-3mm lytags:0-1mm ceramics Grain=20:80:30.
The preparation method of the above-mentioned lightweight aggregate concrete for 3D printing includes the following steps:
Step 1:By formula ratio by the flyash of the ceramic particle of 0-1mm, the lytag of 1-3mm grain sizes and 3-5mm Haydite is mixed, and is stirred evenly, and lightweight aggregate raw material is made, spare;
Step 2:By formula ratio by 42.5R Portland cements, flyash, silicon ash, accelerator, early strength agent and flocculant Mixing, stirs evenly, and mixture is made, spare;
Step 3:The lightweight aggregate raw material as made from formula ratio by step 1 is added in mixture made from step 2, and stirring is equal It is even, powder is made, it is spare;
Step 4:Powder obtained in step 3 with water is mixed by formula ratio, stirs evenly, is made for the light of 3D printing Aggregate concrete.
Embodiment 2
A kind of lightweight aggregate concrete for 3D printing includes the raw material of following parts by weight:42.5R Portland cements 100 parts, 30 parts, I grades 5 parts of silicon ashes of I grades of flyash, 25 parts of water, 3 parts of accelerator, 3 parts of early strength agent, 1 part of flocculant, lightweight aggregate 120 Part.
The raw material and its weight ratio of lightweight aggregate be:The ceramic particle of 0-1mm:3-5mm haydites of book structure:1-3mm flyash ceramics Grain=30:30:70.
The preparation method of the above-mentioned lightweight aggregate concrete for 3D printing includes the following steps:
Step 1:By formula ratio:The haydites of book structure of 0-1mm ceramic particles, the lytag of 1-3mm grain sizes and 3-5mm into Row mixing, stirs evenly, and lightweight aggregate raw material is made, spare;
Step 2:By formula ratio by 42.5R Portland cements, flyash, silicon ash, accelerator, early strength agent and flocculant Mixing, stirs evenly, and mixture is made, spare;
Step 3:The lightweight aggregate raw material as made from formula ratio by step 1 is added in mixture made from step 2, and stirring is equal It is even, powder is made, it is spare;
Step 4:Powder obtained in step 3 with water is mixed by formula ratio, stirs evenly, is made for the light of 3D printing Aggregate concrete.
Mechanics Performance Testing is carried out to corresponding lightweight aggregate, correlated performance is as follows:
7 days compression strength perpendicular to Print direction reach 21.7Mpa, reach along 28 days compression strength of Print direction 16.3Mpa;
28 days compression strength perpendicular to Print direction reach 34.4Mpa, are reached along 28 days compression strength of Print direction To 27.8Mpa;
7 days tensile strength perpendicular to Print direction reach 4.1Mpa, reach along 28 days tensile strength of Print direction 3.5Mpa;
28 days tensile strength perpendicular to Print direction reach 5.6Mpa, reach along 28 days tensile strength of Print direction 4.8Mpa。
Embodiment 3
Using formula similar to Example 2, the difference lies in the formula of the present embodiment is as follows:
After testing, lightweight aggregate concrete has good tension resistance performance.
Embodiment 4
Using formula similar to Example 2, the difference lies in the formula of the present embodiment is as follows:
After testing, lightweight aggregate concrete has good tension resistance performance.

Claims (9)

1. a kind of lightweight aggregate concrete for 3D printing, which is characterized in that the concrete includes the component of following parts by weight:
A kind of 2. lightweight aggregate concrete for 3D printing according to claim 1, which is characterized in that the silicate The model 42.5R of cement, the grade of the flyash is I grade, and the grade of the silicon ash is I grade.
A kind of 3. lightweight aggregate concrete for 3D printing according to claim 1, which is characterized in that the accelerator For the accelerator of alkali-free liquid, including using aluminum sulfate as the accelerator of key component, using aluminum sulfate and sodium aluminate as key component Accelerator, using aluminum sulfate and aluminium hydroxide as the accelerator of key component, using aluminum sulfate and sodium fluoride as the speed of key component Solidifying agent or using aluminum sulfate and magnesium sulfate as the accelerator of key component.
A kind of 4. lightweight aggregate concrete for 3D printing according to claim 1, which is characterized in that the early strength agent For one kind in inorganic salts early strength agent, organic compound early strength agent or compound early strength agent and early strength water-reducing agent, wherein, it is described Inorganic salts early strength agent is the additive with early strength function comprising chloride, sulfate, nitrite or carbonate;It is described Organic compound early strength agent is the tool for including methanol, ethyl alcohol, ethylene glycol, triethanolamine, triisopropanolamine, diethanol amine or urea Have an additive of early strength function, the compound early strength agent and early strength water-reducing agent be comprising simultaneously comprising inorganic salts early strength agent and The mixing early strength agent of organic compound early strength agent.
A kind of 5. lightweight aggregate concrete for 3D printing according to claim 1, which is characterized in that the flocculant For watersoluble organic polymer, fine inorganic material, organic water soluble flocculant or organic material lotion, wherein, it is described water-soluble Property organic polymer include ferry grease, amylan, poly- atmosphere ethylene, polyacrylamide, carboxy vinyl polymer or polyvinyl alcohol, institute It states fine inorganic material and includes such as silicon ash, alumina silicate, bentonite or diatomite, the organic water soluble flocculant is included with hydrocarbon Styrene copolymerisation object, natural gum, water-soluble polysaccharide polymer or the Welland resin of base, the organic material lotion include propylene Yogurt liquid or paraffin wax emulsions.
A kind of 6. lightweight aggregate concrete for 3D printing according to claim 1, which is characterized in that the lightweight aggregate Including the haydite that grain size is 0~5mm, wherein, grain size is 3~5mm haydites, grain size is 1~3mm haydites and grain size is 0~1mm potteries The mass ratio of grain is (20~40):(60~80):(30~50).
A kind of 7. lightweight aggregate concrete for 3D printing according to claim 6, which is characterized in that the haydite packet Include haydites of book structure or lytag.
8. a kind of exist as described in claim 1~7 is any for the preparation method of the lightweight aggregate concrete of 3D printing, feature In including following steps:
(1) haydite of different-grain diameter is uniformly mixed, it is spare obtains lightweight aggregate;By portland cement, flyash, silicon ash, rapid hardening Agent, early strength agent, flocculant are uniformly mixed, and mixed powder is made;
(2) lightweight aggregate and mixed powder made from step (1) are uniformly mixed, obtain mixed raw material;
(3) before 3D printing, mixed raw material with water is mixed, is stirring evenly and then adding into and is printed into 3D printer.
9. a kind of application for the lightweight aggregate concrete that 3D printing is used for as described in claim 1~7 is any, which is characterized in that should Concrete is used as the raw material that 3D printer builds concrete structure, and the concrete structure includes the lightweight wall of insulation.
CN201711434195.0A 2017-12-26 2017-12-26 It is a kind of for lightweight aggregate concrete of 3D printing and preparation method and application Pending CN108164215A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943324A (en) * 2018-07-04 2018-12-07 华南理工大学 A kind of 3D printing powder bonding method based on water-soluble effect
CN109001237A (en) * 2018-09-25 2018-12-14 长安大学 A kind of rock mass internal structure production method based on CT scan and 3D printing
CN109503067A (en) * 2018-11-19 2019-03-22 青岛崇置混凝土工程有限公司 Light aggregate concrete and preparation method thereof
CN109734388A (en) * 2019-02-22 2019-05-10 广州建筑产业研究院有限公司 A kind of mortar and its preparation method and application
CN109956724A (en) * 2019-04-23 2019-07-02 中电建水环境治理技术有限公司 A kind of novel 3D printing pottery sand cement-base composite material and its preparation and application
CN110078459A (en) * 2019-04-23 2019-08-02 中电建水环境治理技术有限公司 A kind of novel 3D printing is crushed haydite concrete material and its preparation and application
CN110105029A (en) * 2019-05-13 2019-08-09 马鞍山十七冶工程科技有限责任公司 A kind of waterproof thermal insulation mortar and its preparation method and application for 3D printing building
CN111018448A (en) * 2019-12-31 2020-04-17 浙江大学 Anti-freezing concrete for 3D printing in low-temperature environment and construction method thereof
CN111635156A (en) * 2020-06-08 2020-09-08 上海国惠环保科技集团有限公司 Preparation method of 3D printing building material aggregate
CN112536884A (en) * 2020-11-17 2021-03-23 深圳大学 Coarse aggregate planting and burying device and 3D printer
CN113636811A (en) * 2021-08-10 2021-11-12 成都精准混凝土有限公司 Concrete for 3D printing and preparation method thereof
CN111635156B (en) * 2020-06-08 2022-06-10 上海国惠环保科技集团有限公司 Preparation method of 3D printing building material aggregate

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CN103803904A (en) * 2013-12-30 2014-05-21 北京新航建材集团有限公司 Self-compacting light aggregate concrete and preparation method thereof
CN104891891A (en) * 2015-05-06 2015-09-09 同济大学 3D printing cement-based material and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN103803904A (en) * 2013-12-30 2014-05-21 北京新航建材集团有限公司 Self-compacting light aggregate concrete and preparation method thereof
CN104891891A (en) * 2015-05-06 2015-09-09 同济大学 3D printing cement-based material and preparation method thereof

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943324A (en) * 2018-07-04 2018-12-07 华南理工大学 A kind of 3D printing powder bonding method based on water-soluble effect
CN109001237A (en) * 2018-09-25 2018-12-14 长安大学 A kind of rock mass internal structure production method based on CT scan and 3D printing
CN109503067A (en) * 2018-11-19 2019-03-22 青岛崇置混凝土工程有限公司 Light aggregate concrete and preparation method thereof
CN109503067B (en) * 2018-11-19 2021-02-02 青岛崇置混凝土工程有限公司 Light aggregate concrete and preparation method thereof
CN109734388A (en) * 2019-02-22 2019-05-10 广州建筑产业研究院有限公司 A kind of mortar and its preparation method and application
CN109734388B (en) * 2019-02-22 2021-07-30 广州建筑产业研究院有限公司 Mortar and preparation method and application thereof
CN109956724A (en) * 2019-04-23 2019-07-02 中电建水环境治理技术有限公司 A kind of novel 3D printing pottery sand cement-base composite material and its preparation and application
CN110078459A (en) * 2019-04-23 2019-08-02 中电建水环境治理技术有限公司 A kind of novel 3D printing is crushed haydite concrete material and its preparation and application
CN110105029A (en) * 2019-05-13 2019-08-09 马鞍山十七冶工程科技有限责任公司 A kind of waterproof thermal insulation mortar and its preparation method and application for 3D printing building
CN110105029B (en) * 2019-05-13 2020-09-11 中国十七冶集团有限公司 Waterproof thermal insulation mortar for 3D printing building and preparation method and application thereof
WO2020228432A1 (en) * 2019-05-13 2020-11-19 中国十七冶集团有限公司 Waterproof thermal insulation mortar for 3d-printed buildings, preparation method therefor and application thereof
CN111018448A (en) * 2019-12-31 2020-04-17 浙江大学 Anti-freezing concrete for 3D printing in low-temperature environment and construction method thereof
CN111018448B (en) * 2019-12-31 2021-02-19 浙江大学 Anti-freezing concrete for 3D printing in low-temperature environment and construction method thereof
CN111635156A (en) * 2020-06-08 2020-09-08 上海国惠环保科技集团有限公司 Preparation method of 3D printing building material aggregate
CN111635156B (en) * 2020-06-08 2022-06-10 上海国惠环保科技集团有限公司 Preparation method of 3D printing building material aggregate
CN112536884A (en) * 2020-11-17 2021-03-23 深圳大学 Coarse aggregate planting and burying device and 3D printer
CN113636811A (en) * 2021-08-10 2021-11-12 成都精准混凝土有限公司 Concrete for 3D printing and preparation method thereof

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Application publication date: 20180615