CN111892323A - Organic concrete accelerator - Google Patents
Organic concrete accelerator Download PDFInfo
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- CN111892323A CN111892323A CN202010833805.XA CN202010833805A CN111892323A CN 111892323 A CN111892323 A CN 111892323A CN 202010833805 A CN202010833805 A CN 202010833805A CN 111892323 A CN111892323 A CN 111892323A
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- aluminum hydroxide
- concrete
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- 239000004567 concrete Substances 0.000 title claims abstract description 49
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical class [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 36
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical class [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 150000001412 amines Chemical class 0.000 claims abstract description 17
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 150000007524 organic acids Chemical class 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000292 calcium oxide Substances 0.000 claims abstract description 8
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims description 19
- 230000000996 additive effect Effects 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 238000012986 modification Methods 0.000 claims description 15
- 230000004048 modification Effects 0.000 claims description 15
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 15
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 10
- 239000007900 aqueous suspension Substances 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000003623 enhancer Substances 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 239000012065 filter cake Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- -1 sorbitan fatty acid ester Chemical class 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- 235000011054 acetic acid Nutrition 0.000 claims description 4
- 150000001413 amino acids Chemical class 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000004359 castor oil Substances 0.000 claims description 3
- 235000019438 castor oil Nutrition 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000768 polyamine Polymers 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229960004889 salicylic acid Drugs 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses an organic concrete accelerator, which relates to the technical field of accelerators and comprises the following components in parts by weight: 30-50 parts of modified sodium aluminate, 15-30 parts of quick lime, 10-15 parts of sodium carbonate, 6-10 parts of organic amine substances, 4-8 parts of modified aluminum hydroxide, 3-5 parts of organic acid, 0.2-1 part of reinforcing agent, 0.2-1 part of anti-settling agent and 20-40 parts of deionized water. According to the invention, by adding the modified sodium aluminate, the organic amine substance and the modified aluminum hydroxide, the mechanical property of the concrete can be improved, the compressive strength of the concrete can be improved, the compatibility of the base material can be improved, and the setting rate of the concrete can be accelerated; meanwhile, the invention can effectively shorten the setting time of the concrete and improve the compressive strength of the concrete through the synergistic effect and reasonable proportion of different raw materials.
Description
Technical Field
The invention relates to the technical field of setting accelerators, in particular to an organic concrete setting accelerator.
Background
The accelerating agent is an additive which is added into the concrete and can make the concrete quickly set and harden. The main types are inorganic salts and organic substances. The powdery solid only accounts for 2-3% of the cement in the concrete, but can cause the concrete to be initially set within 5min and the accelerator to be set within 12min, so as to achieve the purpose of rapid setting of the concrete in rush repairs or roadways, and is an indispensable additive in a sprayed concrete construction method. Their function is to accelerate the hydration hardening of the cement and to develop sufficient strength in a very short time to guarantee the requirements of the particular construction.
However, the concrete accelerator on the market at present has poor compressive strength of concrete, poor dispersibility and compatibility of various base materials, high production cost and long concrete setting rate in the actual use process, and cannot meet the requirements of the existing market, so that how to improve the mechanical properties of the concrete accelerator while shortening the setting time is an urgent need in the prior art. Accordingly, those skilled in the art have provided an organic concrete accelerator to solve the problems set forth in the background art as described above.
Disclosure of Invention
The invention aims to provide an organic concrete accelerator, which can effectively shorten the setting time of concrete and improve the compressive strength of the concrete through the synergistic effect and reasonable proportioning of different raw materials.
In order to achieve the purpose, the invention provides the following technical scheme: the organic concrete accelerator comprises the following components in parts by weight: 30-50 parts of modified sodium aluminate, 15-30 parts of quick lime, 10-15 parts of sodium carbonate, 6-10 parts of organic amine substances, 4-8 parts of modified aluminum hydroxide, 3-5 parts of organic acid, 0.2-1 part of reinforcing agent, 0.2-1 part of anti-settling agent and 20-40 parts of deionized water.
As a further scheme of the invention: the accelerator comprises the following components in parts by weight: 40 parts of modified sodium aluminate, 22.5 parts of quick lime, 12.5 parts of sodium carbonate, 8 parts of organic amine substances, 6 parts of modified aluminum hydroxide, 4 parts of organic acid, 0.6 part of reinforcing agent, 0.6 part of anti-settling agent and 30 parts of deionized water.
As a still further scheme of the invention: the modified sodium aluminate is prepared by the following steps:
s11: adding lime into the sodium aluminate solution, and carrying out stirring reaction, wherein the addition amount of the lime is 8-10% of the mass of the sodium aluminate solution;
s12: and adding an additive for surface modification into the solution, and reacting to obtain modified sodium aluminate.
As a still further scheme of the invention: the addition amount of the surface modification additive is 0.1-0.5% of the mass of the sodium aluminate solution, and the surface modification additive is any one of amino acid or polyamine.
As a still further scheme of the invention: the organic amine substance is any one of monoethanolamine, diethanolamine or triethanolamine.
As a still further scheme of the invention: the modified aluminum hydroxide is prepared by the following steps:
s11: adding water into aluminum hydroxide for dispersion to prepare an aluminum hydroxide aqueous suspension;
s12: dissolving sorbitan fatty acid ester in absolute ethyl alcohol, and performing ultrasonic treatment to obtain a modified ethyl alcohol solution;
s13: and (3) dripping the modified ethanol solution into an aluminum hydroxide aqueous suspension, uniformly mixing, heating to 60-80 ℃, keeping the temperature for 60-90 min, cooling and precipitating, then carrying out suction filtration, drying a filter cake, and crushing to obtain the modified aluminum hydroxide.
As a still further scheme of the invention: the organic acid is any one or mixture of more of citric acid, lactic acid, salicylic acid, formic acid, acetic acid and oxalic acid.
As a still further scheme of the invention: the enhancer is any one of ethylene glycol, polyethylene glycol, propylene glycol or glycerol.
As a still further scheme of the invention: the anti-settling agent is any one of modified organic bentonite or modified hydrogenated castor oil.
Compared with the prior art, the invention has the beneficial effects that: the invention discloses an organic concrete accelerator, which can play a good filling and reinforcing effect through added modified sodium aluminate, improve the mechanical property of concrete and improve the compressive strength of the concrete; the organic amine substance and the modified aluminum hydroxide added in the invention can be uniformly dispersed in the base material, so that the compatibility of the base material is improved, and the coagulation rate of the concrete is accelerated; meanwhile, the invention can effectively shorten the setting time of the concrete and improve the compressive strength of the concrete through the synergistic effect and reasonable proportion of different raw materials.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, the first and second substrates,
example 1
An organic concrete accelerator comprises the following components in parts by weight: 30 parts of modified sodium aluminate, 15 parts of quick lime, 10 parts of sodium carbonate, 6 parts of organic amine substances, 4 parts of modified aluminum hydroxide, 3 parts of organic acid, 0.2 part of reinforcing agent, 0.2 part of anti-settling agent and 20 parts of deionized water.
Further, the modified sodium aluminate is prepared by the following steps:
s11: adding lime into the sodium aluminate solution, and carrying out stirring reaction, wherein the addition amount of the lime is 8% of the mass of the sodium aluminate solution;
s12: and adding an additive for surface modification into the solution, and reacting to obtain modified sodium aluminate.
Still further, the additive amount of the surface modification additive is 0.1% of the mass of the sodium aluminate solution, and the surface modification additive is an amino acid.
Still further, the organic amine is monoethanolamine.
Further, the modified aluminum hydroxide is prepared by the following steps:
s11: adding water into aluminum hydroxide for dispersion to prepare an aluminum hydroxide aqueous suspension;
s12: dissolving sorbitan fatty acid ester in absolute ethyl alcohol, and performing ultrasonic treatment to obtain a modified ethyl alcohol solution;
s13: and (3) dripping the modified ethanol solution into the aluminum hydroxide aqueous suspension, uniformly mixing, heating to 60 ℃, keeping the temperature for 60min, cooling and precipitating, then carrying out suction filtration, drying and crushing a filter cake to obtain the modified aluminum hydroxide.
Still further, the organic acid is a mixture of citric acid, lactic acid and salicylic acid.
Still further, the enhancer is ethylene glycol.
Still further, the anti-settling agent is modified organic bentonite.
Example 2
An organic concrete accelerator comprises the following components in parts by weight: 50 parts of modified sodium aluminate, 30 parts of quick lime, 15 parts of sodium carbonate, 10 parts of organic amine substances, 8 parts of modified aluminum hydroxide, 5 parts of organic acid, 1 part of reinforcing agent, 1 part of anti-settling agent and 40 parts of deionized water.
Further, the modified sodium aluminate is prepared by the following steps:
s11: adding lime into the sodium aluminate solution, and carrying out stirring reaction, wherein the addition amount of the lime is 10% of the mass of the sodium aluminate solution;
s12: and adding an additive for surface modification into the solution, and reacting to obtain modified sodium aluminate.
Still further, the additive for surface modification was added in an amount of 0.5% by mass of the sodium aluminate solution, and the additive for surface modification was a polyamine.
Still further, the organic amine is diethanolamine.
Further, the modified aluminum hydroxide is prepared by the following steps:
s11: adding water into aluminum hydroxide for dispersion to prepare an aluminum hydroxide aqueous suspension;
s12: dissolving sorbitan fatty acid ester in absolute ethyl alcohol, and performing ultrasonic treatment to obtain a modified ethyl alcohol solution;
s13: and (3) dripping the modified ethanol solution into the aluminum hydroxide aqueous suspension, uniformly mixing, heating to 80 ℃, keeping the temperature for 90min, cooling and precipitating, then carrying out suction filtration, drying and crushing a filter cake to obtain the modified aluminum hydroxide.
Still further, the organic acid is a mixture of formic acid, acetic acid, and oxalic acid.
Still further, the enhancer polyethylene glycol.
Still further, the anti-settling agent is modified hydrogenated castor oil.
Example 3
An organic concrete accelerator comprises the following components in parts by weight: 40 parts of modified sodium aluminate, 22.5 parts of quick lime, 12.5 parts of sodium carbonate, 8 parts of organic amine substances, 6 parts of modified aluminum hydroxide, 4 parts of organic acid, 0.6 part of reinforcing agent, 0.6 part of anti-settling agent and 30 parts of deionized water.
Further, the modified sodium aluminate is prepared by the following steps:
s11: adding lime into the sodium aluminate solution, and carrying out stirring reaction, wherein the addition amount of the lime is 9% of the mass of the sodium aluminate solution;
s12: and adding an additive for surface modification into the solution, and reacting to obtain modified sodium aluminate.
Still further, the additive amount of the surface modification additive is 0.3% by mass of the sodium aluminate solution, and the surface modification additive is any one of amino acids or condensed amines.
Still further, the organic amine substance is triethanolamine.
Further, the modified aluminum hydroxide is prepared by the following steps:
s11: adding water into aluminum hydroxide for dispersion to prepare an aluminum hydroxide aqueous suspension;
s12: dissolving sorbitan fatty acid ester in absolute ethyl alcohol, and performing ultrasonic treatment to obtain a modified ethyl alcohol solution;
s13: and (3) dripping the modified ethanol solution into an aluminum hydroxide aqueous suspension, uniformly mixing, heating to 70 ℃, keeping the temperature for 75min, cooling and precipitating, then carrying out suction filtration, drying a filter cake, and crushing to obtain the modified aluminum hydroxide.
Still further, the organic acid is a mixture of citric acid and acetic acid.
Still further, the enhancer is propylene glycol.
Still further, the anti-settling agent is modified organic bentonite.
Comparative example 1
The concrete accelerator sold on the market is selected.
Examples of the experiments
Concrete performance tests are carried out on the accelerator products in example 1, example 2, example 3 and comparative example 1, and the incorporation amount is 5%.
The experimental results are detailed in table 1 below.
Table 1 results of performance testing
It is clear from the above that the accelerator products of examples 1, 2 and 3 of the present invention have advantages of short setting time and high compressive strength as compared with comparative example 1, and can effectively improve the performance of concrete.
In conclusion, the added modified sodium aluminate can achieve a good filling and reinforcing effect, improve the mechanical property of the concrete and improve the compressive strength of the concrete; the organic amine substance and the modified aluminum hydroxide added in the invention can be uniformly dispersed in the base material, so that the compatibility of the base material is improved, and the coagulation rate of the concrete is accelerated; meanwhile, the invention can effectively shorten the setting time of the concrete and improve the compressive strength of the concrete through the synergistic effect and reasonable proportion of different raw materials.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
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. An organic concrete accelerator is characterized in that: the accelerator comprises the following components in parts by weight: 30-50 parts of modified sodium aluminate, 15-30 parts of quick lime, 10-15 parts of sodium carbonate, 6-10 parts of organic amine substances, 4-8 parts of modified aluminum hydroxide, 3-5 parts of organic acid, 0.2-1 part of reinforcing agent, 0.2-1 part of anti-settling agent and 20-40 parts of deionized water.
2. The organic concrete accelerator as claimed in claim 1, wherein: the accelerator comprises the following components in parts by weight: 40 parts of modified sodium aluminate, 22.5 parts of quick lime, 12.5 parts of sodium carbonate, 8 parts of organic amine substances, 6 parts of modified aluminum hydroxide, 4 parts of organic acid, 0.6 part of reinforcing agent, 0.6 part of anti-settling agent and 30 parts of deionized water.
3. The organic concrete accelerator as claimed in claim 1, wherein: the modified sodium aluminate is prepared by the following steps:
s11: adding lime into the sodium aluminate solution, and carrying out stirring reaction, wherein the addition amount of the lime is 8-10% of the mass of the sodium aluminate solution;
s12: and adding an additive for surface modification into the solution, and reacting to obtain modified sodium aluminate.
4. The organic concrete accelerator as claimed in claim 3, wherein: the addition amount of the surface modification additive is 0.1-0.5% of the mass of the sodium aluminate solution, and the surface modification additive is any one of amino acid or polyamine.
5. The organic concrete accelerator as claimed in claim 1, wherein: the organic amine substance is any one of monoethanolamine, diethanolamine or triethanolamine.
6. The organic concrete accelerator as claimed in claim 1, wherein: the modified aluminum hydroxide is prepared by the following steps:
s11: adding water into aluminum hydroxide for dispersion to prepare an aluminum hydroxide aqueous suspension;
s12: dissolving sorbitan fatty acid ester in absolute ethyl alcohol, and performing ultrasonic treatment to obtain a modified ethyl alcohol solution;
s13: and (3) dripping the modified ethanol solution into an aluminum hydroxide aqueous suspension, uniformly mixing, heating to 60-80 ℃, keeping the temperature for 60-90 min, cooling and precipitating, then carrying out suction filtration, drying a filter cake, and crushing to obtain the modified aluminum hydroxide.
7. The organic concrete accelerator as claimed in claim 1, wherein: the organic acid is any one or mixture of more of citric acid, lactic acid, salicylic acid, formic acid, acetic acid and oxalic acid.
8. The organic concrete accelerator as claimed in claim 1, wherein: the enhancer is any one of ethylene glycol, polyethylene glycol, propylene glycol or glycerol.
9. The organic concrete accelerator as claimed in claim 1, wherein: the anti-settling agent is any one of modified organic bentonite or modified hydrogenated castor oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833805.XA CN111892323A (en) | 2020-08-18 | 2020-08-18 | Organic concrete accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010833805.XA CN111892323A (en) | 2020-08-18 | 2020-08-18 | Organic concrete accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111892323A true CN111892323A (en) | 2020-11-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010833805.XA Pending CN111892323A (en) | 2020-08-18 | 2020-08-18 | Organic concrete accelerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116477908A (en) * | 2023-03-01 | 2023-07-25 | 江苏苏博特新材料股份有限公司 | Quick-hardening early-strength shotcrete for high-stress tunnel support and construction application method thereof |
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| CN103241973A (en) * | 2012-02-05 | 2013-08-14 | 张云侠 | Preparation method for calcium aluminate concrete accelerator |
| CN103639910A (en) * | 2013-12-04 | 2014-03-19 | 江苏锋芒复合材料科技集团有限公司 | High-accuracy grinding band and manufacturing method thereof |
| CN107963827A (en) * | 2017-09-29 | 2018-04-27 | 湖北工业大学 | Organic-inorganic composite alkali-free quick-coagulant and preparation method thereof |
| CN111302371A (en) * | 2020-02-24 | 2020-06-19 | 中南大学 | Method for removing organic matters in sodium aluminate solution |
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