CN108623267A - New material for pile foundation engineering 3D printing - Google Patents
New material for pile foundation engineering 3D printing Download PDFInfo
- Publication number
- CN108623267A CN108623267A CN201810341209.2A CN201810341209A CN108623267A CN 108623267 A CN108623267 A CN 108623267A CN 201810341209 A CN201810341209 A CN 201810341209A CN 108623267 A CN108623267 A CN 108623267A
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- CN
- China
- Prior art keywords
- printing
- pile foundation
- water
- concrete
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/10—Carbohydrates or derivatives thereof
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
-
- 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
Abstract
The invention discloses a kind of new materials for pile foundation engineering 3D printing, belong to geotechnical engineering building material field.The ingredient of new material be cement, sand, stone, water, water-reducing agent, retarder, cement, sand, stone, water mass ratio be 1000：2590：2240：390, the mass ratio of water-reducing agent is 0.50%~0.60%, and the mass ratio of retarder is 0.70%.Compared with prior art, 3D printing is applied in pile foundation building by the present invention, is provided a kind of compression strength and is preferably printed concrete material, has the following advantages：(1) crushing resistance and mobility meet 3D printing technique requirement, and have preferable compression strength compared to existing concrete；(2) 3D printing is applied in pile foundation engineering building, compared to traditional architectural engineering, has many advantages, such as that built speed greatly improves, making step is easier, operation is simpler, human cost is greatly decreased.
Description
Technical field
The present invention relates to geotechnical engineering building material fields, the more particularly, to new material of pile foundation engineering 3D printing.
Background technology
3D printing is one kind of rapid shaping technique, it be one kind based on digital model file, with powdered gold
Belong to or the adhesive materials such as plastics, constructs the technology of object by layer-by-layer printing.3D printing is typically using number
Technologic material printer is often used for modeling come what is realized in fields such as mold manufacturing, industrial designs, after be gradually available for one
The direct manufacture of a little products has had using parts made of the printing of this technology.3D printing technique is in jewelry, footwear, work
Industry design, engineering and construction, automobile, aerospace, dentistry and medical industries, education, GIS-Geographic Information System, civil engineering and
Other field is all applied.With the development of technology, 3D printing technique has increasingly obtained perfect, thus it is possible to vary traditional building
Industry, some buildings can be even made of 3D printing technique.It is endless due to material and technology but in pile foundation engineering
Kind, 3D printing technique is not applied.
Concrete is the most commonly used civil engineering material used in modern architecture building course, in 3D printing building
Concrete is essential, and in pile foundation engineering, concrete is also common material in pile foundation manufacture.Concrete with
There is very high requirement for the performance of material when 3D printing.3D printing concrete and conventional concrete are different, due to
3D printing does not have template, it will not only meet the requirement of rapid shaping, i.e., trickles to surrounding after being come out from printing head and quick
Solidification；Meet the close connection between concrete layer by layer again, and is unlikely to generate cold seam, 3D printing concrete structure or building
It is only one integrated mass；Additionally to meet concrete to be flowed freely in pipeline and in nozzle without blocking pipeline and nozzle,
Therefore mobility, setting time and compression strength will meet the fundamental importance of printing.
Invention content
Goal of the invention：It is existing to overcome the object of the present invention is to provide a kind of new material for pile foundation engineering 3D printing
Insufficient present on material in 3D printing technique.
Technical solution：In order to solve the above technical problems, the present invention provides a kind of coagulations for pile foundation 3D printing technique
The ingredient of soil material, the material is cement, sand, stone, water, water-reducing agent and retarder.
Cement in the concrete material, building dry sand, stone, water mass ratio be 1000：2590：2240：390, subtract
The mass ratio of aqua is 0.50%~0.60%, and the mass ratio of retarder is 0.70%.
The cement of concrete material is 42.5R quick hardening sulphoaluminate cements.Such cement is by special clinker and mine
Agent grinding is made to compare with other kind cement, has apparent fast hard, early strong characteristic, and has that basicity is low, expansion rate
It is small, stablize fast, the indeformable advantage of drying shrinkage.After being mixed and stirred with other materials, the concrete rapid condensation of gained can be made,
In order to can quickly form made buildings model when 3D printing.While its own the characteristics of, also ensures what early period, printing had
Higher intensity is built, 3D printing process is enable to be smoothed out.
The building dry sand that the sand of concrete material selects grain size smaller.Selecting building dry sand, grain size is small first is conducive to coagulation
Soil possesses preferable mobility, avoids that spout blocking occurs in print procedure, is convenient for the progress of print procedure；Secondly building is selected
Dry sand is conducive to environmentally protective, reduces the generation of waste material of buildings, cost-effective.
The stone that the stone of concrete material selects grain size smaller.The stone for selecting grain size smaller is conducive to concrete and possesses
Preferable mobility avoids that spout blocking occurs in print procedure, is convenient for the progress of print procedure.
The retarder of concrete material selects sodium gluconate retarder.Sodium gluconate accounting is in this retarder
99.71%, molecular formula is C6H11O7Na, molecular weight 218.14, reduzate content are less than 0.5%, and heavy metal is small (in terms of Pb)
In 7%, SO4 2ˉContent is less than 0.01, and C 1 content is less than 0.009, and lead salt content is less than 1%, AS2O3Content is less than 0.1%, PH
It is 6.99, character is white crystals particle or powder, is highly soluble in water, is slightly soluble in alcohol, does not dissolve in ether.Sodium gluconate
Diminishing, plasticising, retarding effect all very significantly, can greatly improve the workability of concrete, reduce slump-loss, improve coagulation
The later strength of soil, can be such that presetting period from a few houres extend to several days and lossless intensity as retarder.And the scope of application
Extensively, it can be applied in pump concrete, Cracking of High Flowing Concrete, mass concrete, high grade concrete.It selects such
Sodium gluconate retarder is conducive to preferably control the setting time of the concrete after mixing and stirring, and avoids the improper of setting time
Lead to the interruption of print procedure and exerts an adverse impact to the accuracy of printer model.
The water-reducing agent of concrete material selects polycarboxylate high performance water-reducing agent.This high performance water reducing agent of polyocarboxy acid mainly by
Polycarboxylic acid salt forms, wherein Na2SO4Content≤5.0%, content of formaldehyde≤0.05%, chloride ion content≤0.6%, diminishing
Rate is 25%, and density is between 0.98-1.02, and Ph values are between 7.0-8.0, alkali content 0.02%.Select such polycarboxylic acids
Series high-performance dehydragent is conducive to preferably control the mobility of concrete, can provide in the case that concrete proportioning is lower
Preferable mobility, to obtain preferable compression strength, to reach required intensity requirement.
Operation principle：The present invention by selecting cement, sand, stone, water, water-reducing agent and retarder, and by the above material into
After row mixes and stirs, the concrete rapid condensation of gained can be made, in order to can quickly form made buildings model when 3D printing, together
When also ensure that early period prints the higher intensity of building that has, so that 3D printing process is smoothed out.Gluconic acid is selected
Sodium retarder and polycarboxylate high performance water-reducing agent are conducive to the setting time for preferably controlling the concrete after mixing and stirring, avoid
The improper of setting time leads to the interruption of print procedure and exerts an adverse impact to the accuracy of printer model, while
It ensure that the concrete still has preferable mobility after having selected the lower ratio of mud, to obtain higher pressure resistance
Degree, to reach required intensity requirement.The present invention has fully considered requirement of the 3D printing technique for printed material, and anti-
It is promoted compared to present existing printing concrete on Compressive Strength, meets pile foundation 3D printing requirement, put into practice in geotechnical engineering
In have broad application prospects.
Advantageous effect：Compared with prior art, 3D printing technique is applied in pile foundation building manufacture by the present invention, is carried
It has supplied a kind of compression strength preferably to print concrete material, has had the following advantages：(1) concrete anti-compression and mobility are complete
It is complete to meet 3D printing technique requirement, and possess preferable compression strength compared to existing printing concrete；(2) by 3D printing
Technology is applied in pile foundation engineering building, compared to traditional architectural engineering, there is building manufacturing speed to greatly improve, make step
The advantages that rapid easier, operation is simpler, human cost is greatly decreased.
Description of the drawings
Fig. 1 is the ratio of mud and the relation curve of mobility；
Fig. 2 is the relation curve of sand coarse aggregate ratio and mobility.
Specific implementation mode
In the present embodiment, cement selection 42.5R quick hardening sulphoaluminate cements, the following Tables 1 and 2 of parameter：
The chemical composition and nature parameters of 1 cement of table
The mechanical property of 2 cement of table
Sand selects the stone of building dry sand and grain size 2~3mm of the grain size less than 0.5mm with stone respectively.
Retarder selects sodium gluconate retarder.Sodium gluconate accounting is 99.71% in sodium gluconate retarder,
Molecular formula is C6H11O7Na, molecular weight 218.14, reduzate content are less than 0.5%, and heavy metal (in terms of Pb) is less than 7%, SO4 2 ˉContent is less than 0.01%, Cl-Content is less than 0.009%, and lead salt content is less than 1%, AS2O3Content is less than 0.1%, PH
6.99, character is white crystals particle or powder, is highly soluble in water, is slightly soluble in alcohol, does not dissolve in ether.Water-reducing agent selects poly- carboxylic
Sour high-performance water reducing agent.This high performance water reducing agent of polyocarboxy acid is mainly made of polycarboxylic acid salt, wherein Na2SO4Content≤
5.0%, content of formaldehyde≤0.05%, chloride ion content≤0.6%, water-reducing rate 25%, density is between 0.98-1.02, Ph
Value is between 7.0-8.0, alkali content 0.02%.
Sample preparation is with reference to concrete preparation of specification.
Embodiment 1：
Weigh cement, sand, stone, water mass ratio be 1000：2590：2240：390, the mass ratio of water-reducing agent is
0.50%, the material that the mass ratio of retarder is 0.70% prepares standard-sized concrete with reference to concrete preparation of specification
Sample.The measurement tested through slump consistancy test and concrete crushing strength, measuring result is：The sample slump is 26mm, is destroyed
When apply pressure be 830.25KN, compression strength 36.9MPa.As shown in table 3.
Embodiment 2：
Weigh cement, sand, stone, water mass ratio be 1000：2590：2240：390, the mass ratio of water-reducing agent is
0.55%, the material that the mass ratio of retarder is 0.70% prepares standard-sized concrete with reference to concrete preparation of specification
Sample.The measurement tested through slump consistancy test and concrete crushing strength, measuring result is：The sample slump is 25mm, is destroyed
When apply pressure be 816.75KN, compression strength 36.3MPa.As shown in table 3.
Embodiment 3：
Weigh cement, sand, stone, water mass ratio be 1000：2590：2240：390, the mass ratio of water-reducing agent is
0.60%, the material that the mass ratio of retarder is 0.70% prepares standard-sized concrete with reference to concrete preparation of specification
Sample.The measurement tested through slump consistancy test and concrete crushing strength, measuring result is：The sample slump is 30mm, is destroyed
When apply pressure be 843.75KN, compression strength 37.5MPa.As shown in table 3.
3 Examples 1 to 3 experimental test result of table
In order to understand the influence of the ratio of mud and sand coarse aggregate ratio to concrete flowability, using orthogonal experiment, to the ratio of mud and sand
Two factors of rate have carried out orthogonal test control, respectively 21 groups of samples to Different Water-Cement Ratio under certain sand coarse aggregate ratio and certain ratio of mud
18 groups of samples of lower difference sand coarse aggregate ratio are simulated slump consistancy test, and data see the table below 4, table 5, determine the ratio of mud and sand coarse aggregate ratio
It is specific as shown in Figure 1 and Figure 2 for the influence curve of mobility.
The mobility of concrete under 4 Different Water-Cement Ratio of table
The mobility of concrete under the different sand coarse aggregate ratios of table 5
As shown in table 4 and Fig. 1, other factors remain unchanged, it can be seen that when the ratio of mud increases, the slump also increases therewith
Greatly.Corresponding slump degrees of data has been obtained by a variety of different ratios during experiment, and 3D printing spray is simulated by self-control
Head extrusion device carries out fluidity testing, finally in view of practical 3D printing to the material in each slump range respectively
Mobility requirement, i.e., printed material mobility can meet, and nozzle clogging does not occur in print procedure, while can guarantee and beat
The requirement of excessive slump deformation, the ratio of mud of the final choice slump within the scope of 25~30mm do not occur for print process in which materials
0.39。
As shown in table 5 and Fig. 2, when the ratio of mud remains unchanged, sand coarse aggregate ratio is before reaching optimal sand coarse aggregate ratio, and the slump is with sand coarse aggregate ratio
Increase and increase；And after sand coarse aggregate ratio is more than optimal sand coarse aggregate ratio, the slump reduces with the increase of sand coarse aggregate ratio.Therefore, in order to meet
The requirement for stating 3D printing mobility, the mobility for controlling material are maintained within the scope of 25~30mm, select sand coarse aggregate ratio for 0.536.This
The ratio of mud and sand coarse aggregate ratio of invention new material are the test samples formed from multigroup Different Water-Cement Ratio and sand coarse aggregate ratio according to orthogonal test method
That is selected in product best suits the ratio of this test requirements document.
Claims (8)
1. a kind of new material for pile foundation engineering 3D printing, it is characterised in that：The ingredient of material be cement, sand, stone, water,
Water-reducing agent, retarder.
2. the new material according to claim 1 for pile foundation engineering 3D printing, it is characterised in that：Cement in material, sand,
Stone, water mass ratio be 1000：2590：2240：390, the mass ratio of water-reducing agent is 0.50%~0.60%, the matter of retarder
Amount is than being 0.70%.
3. the new material according to claim 1 or 2 for pile foundation engineering 3D printing, it is characterised in that：The cement
Grade is 42.5R quick hardening sulphoaluminate cements.
4. the new material according to claim 1 or 2 for pile foundation engineering 3D printing, it is characterised in that：The sand is
Dry sand.
5. the new material according to claim 1 or 2 for pile foundation engineering 3D printing, it is characterised in that：The retarder
For sodium gluconate retarder.
6. the new material according to claim 1 or 2 for pile foundation engineering 3D printing, it is characterised in that：The water-reducing agent
For polycarboxylate high performance water-reducing agent.
7. the new material according to claim 1 or 2 for pile foundation engineering 3D printing, it is characterised in that：The material
The mobility slump is 25mm~30mm.
8. the new material according to claim 1 or 2 for pile foundation engineering 3D printing, it is characterised in that：The material
Strength range is 36.3~37.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341209.2A CN108623267A (en) | 2018-04-17 | 2018-04-17 | New material for pile foundation engineering 3D printing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341209.2A CN108623267A (en) | 2018-04-17 | 2018-04-17 | New material for pile foundation engineering 3D printing |
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| Publication Number | Publication Date |
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| CN108623267A true CN108623267A (en) | 2018-10-09 |
Family
ID=63705352
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| CN201810341209.2A Pending CN108623267A (en) | 2018-04-17 | 2018-04-17 | New material for pile foundation engineering 3D printing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664510A (en) * | 2018-12-26 | 2019-04-23 | 长江大学 | A kind of oil exploitation stratum reservoir 3D modeling print system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003681A (en) * | 2014-06-03 | 2014-08-27 | 中交上海三航科学研究院有限公司 | Offshore wind power duct rack grouting material and construction method thereof |
| CN104310918A (en) * | 2014-10-20 | 2015-01-28 | 中国建筑股份有限公司 | Cement-based composite material used for 3D printing technology as well as preparation method and application thereof |
| CN104496384A (en) * | 2014-11-28 | 2015-04-08 | 上海申继交通科技有限公司 | Super-rapid hardening cement concrete |
| CN105753404A (en) * | 2016-02-03 | 2016-07-13 | 临沂大学 | Cement-based material used for building 3D (three-dimensional) printing |
| CN106431151A (en) * | 2016-08-30 | 2017-02-22 | 卓达新材料科技集团威海股份有限公司 | High-iron sulphoaluminate cement gelled material for 3D printed house |
| CN107619243A (en) * | 2017-09-20 | 2018-01-23 | 南京嘉翼数字化增材技术研究院有限公司 | It is a kind of to be used to build cement-base composite material of 3D printing and preparation method thereof |
-
2018
- 2018-04-17 CN CN201810341209.2A patent/CN108623267A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003681A (en) * | 2014-06-03 | 2014-08-27 | 中交上海三航科学研究院有限公司 | Offshore wind power duct rack grouting material and construction method thereof |
| CN104310918A (en) * | 2014-10-20 | 2015-01-28 | 中国建筑股份有限公司 | Cement-based composite material used for 3D printing technology as well as preparation method and application thereof |
| CN104496384A (en) * | 2014-11-28 | 2015-04-08 | 上海申继交通科技有限公司 | Super-rapid hardening cement concrete |
| CN105753404A (en) * | 2016-02-03 | 2016-07-13 | 临沂大学 | Cement-based material used for building 3D (three-dimensional) printing |
| CN106431151A (en) * | 2016-08-30 | 2017-02-22 | 卓达新材料科技集团威海股份有限公司 | High-iron sulphoaluminate cement gelled material for 3D printed house |
| CN107619243A (en) * | 2017-09-20 | 2018-01-23 | 南京嘉翼数字化增材技术研究院有限公司 | It is a kind of to be used to build cement-base composite material of 3D printing and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李旋: "3D打印混凝土配合比设计及其基本性能研究", 《万方在线出版》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664510A (en) * | 2018-12-26 | 2019-04-23 | 长江大学 | A kind of oil exploitation stratum reservoir 3D modeling print system |
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Application publication date: 20181009 |