CN114790090A - Curing agent for 3D printing concrete and preparation method thereof - Google Patents
Curing agent for 3D printing concrete and preparation method thereof Download PDFInfo
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- CN114790090A CN114790090A CN202110096319.9A CN202110096319A CN114790090A CN 114790090 A CN114790090 A CN 114790090A CN 202110096319 A CN202110096319 A CN 202110096319A CN 114790090 A CN114790090 A CN 114790090A
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- parts
- curing agent
- concrete curing
- concrete
- gelatin
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- 239000004567 concrete Substances 0.000 title claims abstract description 47
- 238000010146 3D printing Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 62
- 108010010803 Gelatin Proteins 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920000159 gelatin Polymers 0.000 claims abstract description 17
- 239000008273 gelatin Substances 0.000 claims abstract description 17
- 235000019322 gelatine Nutrition 0.000 claims abstract description 17
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 17
- 239000002250 absorbent Substances 0.000 claims abstract description 9
- 230000002745 absorbent Effects 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 239000012188 paraffin wax Substances 0.000 claims description 27
- 239000000839 emulsion Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000004115 Sodium Silicate Substances 0.000 claims description 17
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 17
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 16
- 239000004202 carbamide Substances 0.000 claims description 16
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 15
- 229910052708 sodium Inorganic materials 0.000 claims description 15
- 239000011734 sodium Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 12
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 12
- 239000007822 coupling agent Substances 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims 2
- -1 sodium fluorosilicate Chemical compound 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 1
- 206010016807 Fluid retention Diseases 0.000 description 12
- 239000003995 emulsifying agent Substances 0.000 description 10
- 229920002401 polyacrylamide Polymers 0.000 description 8
- 239000004566 building material Substances 0.000 description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 5
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 5
- 125000000373 fatty alcohol group Chemical group 0.000 description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 239000002994 raw material 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The invention belongs to the technical field of concrete coating, and particularly relates to a curing agent for 3D printed concrete. The concrete curing agent comprises super absorbent resin, gelatin and diatomite. The 3D printing concrete curing agent disclosed by the invention is excellent in heat insulation and water retention performance, and can meet the use requirements of complex external environments such as large temperature difference, large dry-wet change, severe climate and the like.
Description
Technical Field
The invention belongs to the technical field of concrete coating, and particularly relates to a curing agent for 3D printed concrete and a preparation method thereof.
Background
Reinforced concrete is the most important building material in construction engineering, and is widely applied to industry, civil use, traffic and various buildings ("development and application research of reinforced concrete protective agent", weekend and the like, Shanxi building, 2008, volume 34, 12, page 173, left column, section 1, lines 1-2, published 2008, 4-30).
However, with the continuous development of the building industry, the increasingly prominent problems of high energy consumption and high pollution gradually become an important reason for hindering the healthy development of the building industry in China ("evaluation and research on energy consumption and benefit in the materialization stage of prefabricated concrete structures", high yoga, master academic paper of harbourne university in industry, 2017, 1 st to 2 st line of summary, 10 and 26 of published day 2018); in addition, the problems of poor construction conditions, long setting and hardening period, unbalanced strength development and the like of reinforced concrete buildings are increasingly prominent.
The 3D printed concrete has the advantages of no need of a mold, strong design, early strength, controllable setting speed, good fluidity and the like, and can well solve the problems (3D printed building concrete mix proportion design research, arbor and starry and the like, modern decoration (theory), 2016 (6 th), 240 th page abstract lines 1-3, 2016 (12 th and 31 th) in public days). Therefore, 3D printed concrete has become a research hotspot in the construction field.
However, the outer surface of the 3D printed concrete structure does not have the enclosure of the template, so that the concrete structure is directly exposed to the external natural environment, and therefore, the 3D printed concrete is prone to evaporation and water loss, and in addition, the 3D printed concrete raw material lacks coarse aggregate, which also increases the cracking risk of the 3D printed concrete.
In order to ensure that the hydration of the 3D printing concrete is fully carried out, a reasonable maintenance mode is of great importance.
However, with the wide-range application of 3D printed concrete, the existing concrete curing agent has poor water retention performance, and is difficult to meet the use requirements under complex external environments such as large temperature difference, large dry-wet change, severe climate and the like.
Disclosure of Invention
In view of the above, the present invention aims to provide a concrete curing agent.
The parts are parts by mass unless otherwise specified.
In order to realize the purpose, the technical scheme of the invention is as follows:
the concrete curing agent comprises super absorbent resin, gelatin and diatomite.
Further, the mass ratio of the super absorbent resin, the gelatin and the diatomite is 5-30:1-20: 1-20.
Further, the concrete curing agent includes an alkanolamine.
Further, the cleaning agent also comprises paraffin emulsion and/or urea and/or a coupling agent and/or a film forming agent and/or sodium silicate, sodium fluosilicate and water.
Further, the coupling agent includes a silane coupling agent.
Further, the film forming agent comprises propylene glycol methyl ether or acrylic emulsion.
Further, the concrete curing agent comprises, by mass, 10-80 parts of sodium silicate, 5-60 parts of paraffin emulsion, 1-10 parts of urea, 1-10 parts of a coupling agent, 1-10 parts of an alkanolamine, 1-10 parts of sodium fluosilicate, 1-20 parts of a film forming agent, 5-30 parts of a super absorbent resin, 1-20 parts of gelatin, 1-20 parts of diatomite and 90-150 parts of water.
The invention also aims to provide a preparation method of the concrete curing agent, which comprises the following steps:
mixing sodium silicate, sodium fluosilicate and water uniformly, then adding paraffin emulsion and stirring, then adding urea, coupling agent, alkanolamine and film-forming agent, and then adding super absorbent resin, gelatin and diatomite.
Further, adding sodium silicate and sodium fluosilicate into water, stirring for 25-40min at 35-65 ℃, then adding paraffin emulsion and stirring for 45-55min at the rotating speed of 500rpm of 300-.
The invention also aims to protect the application of the concrete curing agent in 3D printing concrete curing. The invention has the beneficial effects that:
the 3D printing concrete curing agent disclosed by the invention is excellent in water retention performance, and can meet the use requirements of complex external environments such as large temperature difference, large dry-wet change, severe climate and the like.
The 3D printing concrete curing agent disclosed by the invention is excellent in windproof performance, so that the durability of concrete is improved.
The 3D printing concrete curing agent disclosed by the invention is wide in application range and can be used for various 3D printing concrete application occasions.
The preparation method is simple and is beneficial to realizing industrial production.
Detailed Description
The examples are provided for better illustration of the present invention, but the present invention is not limited to the examples. Therefore, those skilled in the art should make insubstantial modifications and adaptations to the embodiments of the present invention in light of the above teachings and remain within the scope of the invention.
Example 1
The 3D printing concrete curing agent comprises the following components in parts by weight: 50 parts of sodium silicate, 3 parts of sodium fluosilicate, 110 parts of water, 40 parts of paraffin emulsion, 2 parts of urea, 3 parts of a silane coupling agent (specifically vinyl triethoxysilane), 5 parts of an alkanolamine (specifically triethanolamine), 5 parts of a film-forming agent propylene glycol methyl ether, 10 parts of polyacrylamide (with the molecular weight of 1000 ten thousand), 5 parts of gelatin and 15 parts of diatomite;
the paraffin emulsion consists of 30% of water, 65% of paraffin, 3% of emulsifier and 2% of polyvinyl alcohol; the emulsifier is fatty alcohol polyoxyethylene ether AEO 20; all in mass percent.
The preparation method of the curing agent comprises the following steps:
adding sodium silicate and sodium fluosilicate into water, and stirring for 30min at 50 ℃; then adding the paraffin emulsion at the rotating speed of 400rpm, stirring for 50min, then adding urea, a silane coupling agent, alkanolamine and a film forming agent at the rotating speed of 800rpm, and then adding polyacrylamide, gelatin and diatomite at the rotating speed of 2000rpm to obtain the product.
The water retention rate of the curing agent prepared in the embodiment is tested according to the building material industry standard (JC 901-2002).
The water retention rate of the curing agent prepared in this example was determined to be 95%.
Comparative example 1
The 3D printing concrete curing agent comprises the following formula: 50 parts of sodium silicate, 3 parts of sodium fluosilicate, 110 parts of water, 40 parts of paraffin emulsion, 2 parts of urea, 3 parts of a silane coupling agent (specifically vinyl triethoxysilane), 5 parts of an alkanolamine (specifically triethanolamine), and 5 parts of a film-forming agent propylene glycol methyl ether;
the paraffin emulsion consists of 30% of water, 65% of paraffin, 3% of emulsifier and 2% of polyvinyl alcohol; the emulsifier is fatty alcohol polyoxyethylene ether AEO 20; all in mass percent.
The preparation method of the curing agent comprises the following steps:
adding sodium silicate and sodium fluosilicate into water, and stirring for 30min at 50 ℃; then adding the paraffin emulsion at the rotating speed of 400rpm, stirring for 50min, and then adding urea, a silane coupling agent, alkanolamine and a film forming agent at the rotating speed of 800rpm to obtain the aqueous polyurethane emulsion.
The water retention rate of the curing agent prepared in the comparative example is tested according to the building material industry standard (JC 901-.
The water retention of the curing agent prepared in the comparative example was 79% by detection.
Example 2
The 3D printing concrete curing agent comprises the following formula: 60 parts of sodium silicate, 5 parts of sodium fluosilicate, 110 parts of water, 35 parts of paraffin emulsion, 4 parts of urea, 2 parts of a silane coupling agent (specifically vinyl triethoxysilane), 5 parts of an alkanolamine (specifically triethanolamine), 5 parts of a film-forming agent propylene glycol methyl ether, 15 parts of polyacrylamide (with the molecular weight of 1000 ten thousand), 15 parts of gelatin and 10 parts of diatomite;
the paraffin emulsion consists of 30% of water, 65% of paraffin, 3% of emulsifier and 2% of polyvinyl alcohol; the emulsifier is fatty alcohol polyoxyethylene ether AEO 20; all in mass percent.
The preparation method of the curing agent comprises the following steps:
adding sodium silicate and sodium fluosilicate into water, stirring for 40min at 40 ℃, then adding paraffin emulsion at the rotating speed of 500rpm, stirring for 45min, then adding urea, a silane coupling agent, alkanolamine and a film-forming agent at the rotating speed of 700rpm, and then adding polyacrylamide, gelatin and diatomite at the rotating speed of 1500rpm to obtain the product.
The water retention rate of the curing agent prepared in the embodiment is tested according to the building material industry standard (JC 901-.
The water retention rate of the curing agent prepared in the example is 90% through detection.
Example 3
The 3D printing concrete curing agent comprises the following components in parts by weight: 45 parts of sodium silicate, 2 parts of sodium fluosilicate, 110 parts of water, 55 parts of paraffin emulsion, 5 parts of urea, 5 parts of a silane coupling agent (specifically vinyl triethoxysilane), 5 parts of an alkanolamine (specifically triethanolamine), 5 parts of a film-forming agent propylene glycol methyl ether, 15 parts of polyacrylamide (with the molecular weight of 1000 ten thousand), 10 parts of gelatin and 15 parts of diatomite;
the paraffin emulsion consists of 30% of water, 65% of paraffin, 3% of emulsifier and 2% of polyvinyl alcohol; the emulsifier is fatty alcohol polyoxyethylene ether AEO 20; all in mass percent.
The preparation method of the curing agent comprises the following steps:
adding sodium silicate and sodium fluosilicate into water, stirring for 40min at 60 ℃, then adding paraffin emulsion at the rotating speed of 300rpm, stirring for 55min, then adding urea, a silane coupling agent, alkanolamine and a film-forming agent at the rotating speed of 600rpm, and then adding polyacrylamide, gelatin and diatomite at the rotating speed of 2500rpm to obtain the composite material.
The water retention rate of the curing agent prepared in the embodiment is tested according to the building material industry standard (JC 901-2002).
The water retention rate of the curing agent prepared in the example is 92% through detection.
Example 4
The 3D printing concrete curing agent comprises the following components in parts by weight: 50 parts of sodium silicate, 3 parts of sodium fluosilicate, 110 parts of water, 40 parts of paraffin emulsion, 2 parts of urea, 3 parts of a silane coupling agent (specifically vinyl triethoxysilane), 5 parts of an alkanolamine (specifically triethanolamine), 5 parts of a film-forming agent acrylic emulsion, 10 parts of polyacrylamide (with a molecular weight of 1000 ten thousand), 5 parts of gelatin and 15 parts of diatomite;
the paraffin emulsion consists of 30% of water, 65% of paraffin, 3% of emulsifier and 2% of polyvinyl alcohol; the emulsifier is fatty alcohol polyoxyethylene ether AEO 20; all in mass percent.
The preparation method of the curing agent comprises the following steps:
adding sodium silicate and sodium fluosilicate into water, and stirring for 30min at 50 ℃; then adding paraffin emulsion at the rotating speed of 400rpm, stirring for 50min, then adding urea, a silane coupling agent, alkanolamine and a film forming agent at the rotating speed of 800rpm, and then adding polyacrylamide, gelatin and diatomite at the rotating speed of 2000rpm to obtain the product.
The water retention rate of the curing agent prepared in the embodiment is tested according to the building material industry standard (JC 901-.
The water retention of the curing agent prepared in the embodiment is 93% through detection.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The concrete curing agent is characterized by comprising super absorbent resin, gelatin and diatomite.
2. The concrete curing agent of claim 1, wherein the mass ratio of the super absorbent resin, the gelatin and the diatomaceous earth is 5-30:1-20: 1-20.
3. The concrete curing agent according to claim 1 or 2, further comprising an alkanolamine.
4. The concrete curing agent of claim 3, further comprising a paraffin emulsion and/or urea and/or a coupling agent and/or a film-forming agent and/or sodium silicate, sodium fluorosilicate and water.
5. The concrete curing agent of claim 4, wherein the coupling agent comprises a silane coupling agent.
6. The concrete curing agent of claim 4 or 5, wherein the film-forming agent comprises propylene glycol methyl ether or acrylic emulsion.
7. The concrete curing agent according to any one of claims 4 to 6, comprising, by mass, 10 to 80 parts of sodium silicate, 5 to 60 parts of paraffin emulsion, 1 to 10 parts of urea, 1 to 10 parts of a coupling agent, 1 to 10 parts of an alkanolamine, 1 to 10 parts of sodium fluorosilicate, 1 to 20 parts of a film-forming agent, 5 to 30 parts of a super absorbent resin, 1 to 20 parts of gelatin, 1 to 20 parts of diatomaceous earth and 90 to 150 parts of water.
8. A method for preparing a concrete curing agent according to any one of claims 1 to 7, characterized by comprising the steps of:
mixing sodium silicate, sodium fluosilicate and water uniformly, then adding paraffin emulsion and stirring, then adding urea, coupling agent, alkanolamine and film-forming agent, and then adding super absorbent resin, gelatin and diatomite.
9. Use of a concrete curing agent according to any one of claims 1-7 in 3D printing concrete curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110096319.9A CN114790090A (en) | 2021-01-25 | 2021-01-25 | Curing agent for 3D printing concrete and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110096319.9A CN114790090A (en) | 2021-01-25 | 2021-01-25 | Curing agent for 3D printing concrete and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114790090A true CN114790090A (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110096319.9A Pending CN114790090A (en) | 2021-01-25 | 2021-01-25 | Curing agent for 3D printing concrete and preparation method thereof |
Country Status (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0826854A (en) * | 1994-07-14 | 1996-01-30 | Hokuriku Fine Chem:Kk | Concrete structure and its construction |
| CN101747081A (en) * | 2008-12-19 | 2010-06-23 | 鞍钢房产建设有限公司 | Cement concrete curing agent and preparation method thereof |
| CN108794062A (en) * | 2018-07-10 | 2018-11-13 | 武汉理工大学 | A kind of mucosal pattern curing compound and preparation method thereof |
| CN110372296A (en) * | 2019-07-19 | 2019-10-25 | 中建西部建设西南有限公司 | A kind of Self-curing cement base 3D printing material and preparation method thereof |
| CN111138209A (en) * | 2020-01-15 | 2020-05-12 | 江苏奥莱特新材料股份有限公司 | Concrete external curing agent |
-
2021
- 2021-01-25 CN CN202110096319.9A patent/CN114790090A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0826854A (en) * | 1994-07-14 | 1996-01-30 | Hokuriku Fine Chem:Kk | Concrete structure and its construction |
| CN101747081A (en) * | 2008-12-19 | 2010-06-23 | 鞍钢房产建设有限公司 | Cement concrete curing agent and preparation method thereof |
| CN108794062A (en) * | 2018-07-10 | 2018-11-13 | 武汉理工大学 | A kind of mucosal pattern curing compound and preparation method thereof |
| CN110372296A (en) * | 2019-07-19 | 2019-10-25 | 中建西部建设西南有限公司 | A kind of Self-curing cement base 3D printing material and preparation method thereof |
| CN111138209A (en) * | 2020-01-15 | 2020-05-12 | 江苏奥莱特新材料股份有限公司 | Concrete external curing agent |
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Application publication date: 20220726 |