CN112645633A - Antifreezing concrete water reducing agent and preparation method thereof - Google Patents
Antifreezing concrete water reducing agent and preparation method thereof Download PDFInfo
- Publication number
- CN112645633A CN112645633A CN202011570448.9A CN202011570448A CN112645633A CN 112645633 A CN112645633 A CN 112645633A CN 202011570448 A CN202011570448 A CN 202011570448A CN 112645633 A CN112645633 A CN 112645633A
- Authority
- CN
- China
- Prior art keywords
- ethyl cellulose
- parts
- coated
- bisulfate
- reducing agent
- 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.)
- Pending
Links
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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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)
Abstract
The application relates to the field of concrete additives, and particularly discloses an antifreezing concrete water reducing agent and a preparation method thereof, wherein the water reducing agent comprises A: 1-5 parts of ethyl cellulose-coated bisulfate, 1-3 parts of a dispersing agent, 20-40 parts of a polycarboxylic acid water reducing agent, 1-4 parts of sodium gluconate and 50-80 parts of water; b: 5-10 parts of an alcohol dissolution releasing agent. The preparation method of the water reducing agent comprises the following steps: weighing a polycarboxylic acid water reducing agent, sodium gluconate and water, and uniformly mixing to obtain a mixture 1; mixing the ethyl cellulose coated bisulfate with the mixture 1, and fully stirring to obtain A; and weighing the alcohol dissolution releasing agent to obtain B. The water reducer can be used for preventing concrete from freezing, and the working time of constructors is prolonged; in addition, the preparation method enables the ethyl cellulose coated hydrogen sulfate to be uniformly dispersed, and avoids solid aggregation and agglomeration.
Description
Technical Field
The application relates to the field of concrete additives, in particular to an antifreezing concrete water reducing agent and a preparation method thereof.
Background
The time is long in winter in northern areas of China, the climate is cold, when building construction operation is carried out in winter in northern areas of China, free water in concrete forms ice crystals at low temperature, the volume of the ice crystals is increased after expansion, ice crystal stress is generated in the concrete, cracks are generated in the concrete, and the structural strength of the concrete is greatly influenced. In order to ensure the quality and progress of construction, a concrete water reducing agent is added into concrete in an economical and effective method.
The Chinese patent with the application publication number of CN103641369A discloses a concrete admixture, which comprises the following components in parts by weight: the proportion of the polycarboxylic acid water reducing agent, the sodium sulfate, the sodium gluconate and the water is (15-30): (0.5-2): 3-10): 55-79, and the sodium sulfate is used as an early strength component to accelerate the curing of the concrete, so that the early strength of the concrete is improved.
With respect to the related art in the above, the inventors consider that: the sodium sulfate and the concrete react too quickly, and workers need to pave the concrete quickly after the admixture is added into the concrete to avoid premature curing of the concrete, so that the construction time is short, and the construction difficulty is high.
Disclosure of Invention
In order to reduce the construction difficulty of workers, the application provides an antifreezing concrete water reducer and a preparation method thereof.
In a first aspect, the application provides an antifreezing concrete water reducer, which adopts the following technical scheme: an anti-freezing concrete water reducer is prepared from the following components in parts by weight:
a: 1-5 parts of ethyl cellulose-coated bisulfate, 1-3 parts of a dispersing agent, 20-40 parts of a polycarboxylic acid water reducing agent, 1-4 parts of sodium gluconate and 50-80 parts of water;
b: 5-10 parts of an alcohol dissolution releasing agent.
By adopting the technical scheme, during construction, workers mix the A and the B in concrete, in the paving process of the concrete, tricalcium aluminate in cement paste hydrates to generate tricalcium aluminate hydrate crystals, and simultaneously generates products such as calcium hydroxide and the like, and the tricalcium aluminate hydrate crystals are separated out from the cement paste as a solid phase, so that the cement is solidified.
When the alcohol dissolution releasing agent is mixed with the ethyl cellulose coated hydrogen sulfate, the alcohol dissolution releasing agent destroys an ethyl cellulose film on the surface of the hydrogen sulfate, so that the hydrogen sulfate is slowly released, and the hydrogen sulfate is ionized into hydrogen ions and sulfate ions when meeting water; the hydrogen ions and hydroxyl ions in the cement paste generate neutralization reaction, calcium hydroxide is consumed, the forward progress of hydration reaction of tricalcium aluminate is promoted, and the forming of concrete is accelerated; sulfate ions and calcium ions are combined to generate calcium sulfate, the calcium sulfate and tricalcium aluminate easily form hydrated calcium sulphoaluminate crystals, and the hydrated calcium sulphoaluminate crystals and the hydrated tricalcium aluminate crystals are separated out together, so that the curing time of the concrete is shortened.
The release of the bisulfate is controlled by the alcohol dissolution release agent, so that sufficient construction time is won by constructors; meanwhile, the bisulfate can efficiently promote the concrete curing, and has good anti-freezing protection effect on the concrete.
Preferably, the ethylcellulose-coated hydrogen sulfate salt is one of ethylcellulose-coated calcium hydrogen sulfate, ethylcellulose-coated sodium hydrogen sulfate and ethylcellulose-coated magnesium hydrogen sulfate.
By adopting the technical scheme, the hydrogen sulfate can be quickly ionized into hydrogen ions and sulfate ions in water, and cement solidification can be promoted; compared with magnesium bisulfate and sodium bisulfate, the calcium bisulfate has low price, stable physicochemical property, difficult moisture absorption in the air and more excellent early strength effect.
Preferably, the component A further comprises 1-5 parts of ethyl cellulose coated quick-setting regulator, and the ethyl cellulose coated quick-setting regulator is ethyl cellulose coated calcium chloride.
By adopting the technical scheme, after the alcohol dissolution releasing agent is added, the ethyl cellulose is dissolved under the action of the alcohol dissolution releasing agent, and the calcium chloride is slowly released; the calcium chloride can form water-insoluble hydrated calcium chloroaluminate with tricalcium aluminate in the cement, so that the solidification of the cement is promoted; in addition, calcium chloride can react with calcium hydroxide to generate calcium oxychloride, so that the forward progress of the hydration reaction of tricalcium aluminate is promoted; the calcium oxychloride has low solubility in water, and is separated out along with a solid phase, so that the solidification rate of the cement is further increased.
Preferably, the A further comprises 1-5 parts of ethyl cellulose coated complexing agent, and the ethyl cellulose coated complexing agent is ethyl cellulose coated sodium N-N dimethyl dithiocarbamate.
By adopting the technical scheme, under the action of the alcohol dissolution releasing agent, the ethyl cellulose is dissolved to release the sodium N-dimethyldithiocarbamate; the N-N dimethyl sodium dithionate has excellent complexing ability, can be complexed with metal ions such as iron, aluminum and the like in cement to form a complex which is difficult to dissolve in water, and increases the precipitation amount of a solid phase, thereby shortening the curing time of concrete.
Preferably, the dispersant is kaolin or calcium lignosulfonate.
By adopting the technical scheme, the kaolin and the calcium lignosulphonate both have good dispersibility, so that the ethylcellulose-coated hydrogen sulfate is uniformly dispersed in the water phase; compared with kaolin, the hydrophobic groups in the calcium lignosulphonate can be adsorbed on the surfaces of cement particles, and the hydrophilic groups are dissolved in water, so that the surfaces of the cement particles are mutually dispersed due to the same charges; after the cement particles are mutually dispersed, the water between the particles is released, thereby achieving the purpose of reducing water.
Preferably, the alcohol dissolution releasing agent is selected from ethanol or a compound of ethanol and triethanolamine in a weight ratio of (3:5): 1.
By adopting the technical scheme, the ethanol and ethanol/triethanolamine compound can be fully dispersed in the water phase and can also dissolve the ethyl cellulose, but compared with the ethanol, the ethanol/triethanolamine compound also has excellent complexing action: triethanolamine is a complexing agent with excellent complexing performance, and in an alkaline environment of cement hydration, triethanolamine can be complexed with metal ions such as iron ions, aluminum ions and the like to form complex salt with low solubility and be separated out from cement paste, so that the solidification of concrete is accelerated.
Preferably, the ethylcellulose-coated hydrogen sulfate salt is prepared by the following method:
weighing ethyl cellulose, adding the ethyl cellulose into absolute ethyl alcohol, and fully dissolving to prepare an ethyl cellulose alcohol dissolving solution with the mass fraction of 2-8%;
spraying the ethyl cellulose alcohol dissolving solution on the surface of the bisulfate under the conditions that the temperature is 35-45 ℃ and the ventilation is performed;
drying at a constant temperature of 80-160 ℃, crushing, and sieving with a 200-800 mesh molecular sieve to obtain the ethyl cellulose coated bisulfate.
By adopting the technical scheme, the method is simple to operate, and in the preparation process, the ethyl cellulose is uniformly formed on the surface of the bisulfate in the ventilation, drying and heating environments, so that the bisulfate is not easy to agglomerate.
In a second aspect, the application provides a preparation method of an antifreezing concrete water reducer, which adopts the following technical scheme:
a preparation method of an antifreezing concrete water reducer comprises the following steps:
weighing a polycarboxylic acid water reducing agent, sodium gluconate and water in parts by weight, and uniformly mixing to obtain a mixture 1;
adding the ethyl cellulose coated bisulfate into the mixture 1, and fully stirring to obtain A;
and weighing the alcohol dissolution releasing agent according to the weight parts to obtain B.
By adopting the technical scheme, when the sodium gluconate is mixed with the ethyl cellulose, the powder particles are easy to aggregate into a cluster, and the sodium gluconate and the ethyl cellulose coated hydrogen sulfate are dissolved step by step, so that the ethyl cellulose coated hydrogen sulfate can be uniformly dispersed in water.
In summary, the present application has the following beneficial effects:
1. according to the application, the ethyl cellulose is adopted to coat the bisulfate and the alcohol dissolution releasing agent to be mixed, so that the bisulfate is slowly released, and sufficient construction time is reserved for constructors; after the bisulfate is released, the cement solidification can be efficiently promoted, and the structural strength of the concrete is increased.
2. In the application, the preferable ethanol/triethanolamine compound alcohol dissolution release agent can dissolve ethyl cellulose and complex metal ions such as iron, aluminum and the like in cement paste to generate an insoluble complex compound to promote concrete curing.
3. According to the preparation method, the sodium gluconate is dissolved firstly, and then the ethyl cellulose coated bisulfate is dissolved, so that the ethyl cellulose coated bisulfate is prevented from colliding with sodium gluconate solid particles when being dissolved, and the ethyl cellulose coated bisulfate is uniformly dispersed in water.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials used in this example are all commercially available, with the absolute ethanol being analytically pure; ethyl cellulose was purchased from guangdong yue beautifying industries, ltd.
Preparation examples of raw materials
Preparation example 1: preparation of ethyl cellulose coated calcium hydrogen sulfate
S1, weighing ethyl cellulose, adding absolute ethyl alcohol, and fully dissolving to prepare an ethyl cellulose alcohol dissolving solution with the mass fraction of 5%;
s2, spraying ethyl cellulose alcohol dissolving liquid on the surface of calcium hydrogen sulfate powder at 40 ℃ under the condition of ventilation;
and S, drying at constant temperature of 3.110 ℃ for 180min, crushing, and sieving with a 200-800-mesh molecular sieve to obtain the ethyl cellulose coated calcium hydrogen sulfate.
Preparation example 2: preparation of ethyl cellulose coated calcium chloride
S1, weighing ethyl cellulose, adding absolute ethyl alcohol, and fully dissolving to prepare an ethyl cellulose alcohol dissolving solution with the mass fraction of 5%;
s2, spraying ethyl cellulose alcohol dissolving liquid on the surface of calcium chloride powder under the condition of 40 ℃ and ventilation;
and S, drying at constant temperature of 3.110 ℃ for 180min, crushing, and sieving with a 200-800-mesh molecular sieve to obtain the ethyl cellulose-coated calcium chloride.
Preparation example 3: preparation of ethyl cellulose coated N-N dimethyl sodium dithioformate
S1, weighing ethyl cellulose, adding absolute ethyl alcohol, and fully dissolving to prepare an ethyl cellulose alcohol dissolving solution with the mass fraction of 5%;
s2, spraying ethyl cellulose alcohol dissolving liquid on the surface of the sodium N-N dimethyl dithiocarbamate powder under the condition of ventilation at 40 ℃;
and S, drying at constant temperature of 3.90 ℃ for 180min, crushing, and sieving with a 200-800-mesh molecular sieve to obtain the sodium N-dimethyldithiocarbamate coated by the ethyl cellulose.
Preparation example 4: preparation of ethyl cellulose coated sodium bisulfate
S1, weighing ethyl cellulose, adding absolute ethyl alcohol, heating in a water bath at 52 ℃, fully dissolving, and preparing an ethyl cellulose alcohol dissolving solution with the mass fraction of 5%;
s2, spraying ethyl cellulose alcohol dissolving liquid on the surface of sodium bisulfate powder under the condition of ventilation at 40 ℃;
and S, drying at constant temperature of 3.110 ℃ for 180min, crushing, and sieving with a 200-800-mesh molecular sieve to obtain the ethyl cellulose coated sodium bisulfate.
Preparation example 5: preparation of ethyl cellulose coated magnesium hydrogen sulfate
S1, weighing ethyl cellulose, adding absolute ethyl alcohol, and fully dissolving to prepare an ethyl cellulose alcohol dissolving solution with the mass fraction of 5%;
s2, spraying ethyl cellulose alcohol dissolving liquid on the surface of magnesium bisulfate powder under the condition of ventilation at 40 ℃;
and S, drying at constant temperature of 3.100 ℃ for 180min, crushing, and sieving with a 200-800-mesh molecular sieve to obtain the ethyl cellulose coated magnesium hydrogen sulfate.
Examples
Examples 1 to 5
As shown in Table 1, the main difference between examples 1 to 5 is that the raw material ratios are different.
In the following, example 1 is given as an example, wherein kaolin is used as the dispersant, 75% by volume of ethanol is used as the alcohol dissolution-releasing agent, ethyl cellulose-coated sodium bisulfate is used as the ethyl cellulose-coated sodium bisulfate, and ethyl cellulose-coated sodium bisulfate is obtained from preparation example 4.
The preparation method of the water reducing agent of example 1 is as follows:
s1, weighing a polycarboxylic acid water reducing agent, sodium gluconate, a dispersing agent and water, and stirring at 120r/min for 30min to obtain a mixture 1;
s2, weighing ethyl cellulose coated hydrogen sulfate, adding the ethyl cellulose coated hydrogen sulfate into the mixture 1, and stirring at 120r/min for 20min to obtain A;
s3, weighing 5kg of ethanol to obtain B.
TABLE 1
Example 6
This example is different from example 3 in that 1kg of ethylcellulose-coated calcium chloride is further contained in a, and the ethylcellulose-coated calcium chloride is prepared by the method of preparation example 2.
Example 7
This example differs from example 6 in that 3kg of ethylcellulose-coated calcium chloride is used in A.
Example 8
This example differs from example 6 in that 5kg of ethylcellulose-coated calcium chloride is used in A.
Example 9
This example is different from example 7 in that A further contains 1kg of sodium N-dimethyldithiocarbamate coated with ethylcellulose, and sodium N-dimethyldithiocarbamate coated with ethylcellulose is prepared by the method of preparation example 3.
Example 10
This example is different from example 9 in that 3kg of sodium N-dimethyldithiocarbamate coated with ethylcellulose in A is used.
Example 11
This example is different from example 9 in that 5kg of sodium N-dimethyldithiocarbamate coated with ethylcellulose in A is used.
Example 12
This example differs from example 10 in that calcium lignosulfonate was used as the dispersing agent.
Example 13
The difference between this example and example 12 is that 5kg of ethanol and 1kg of triethanolamine were used as the alcohol dissolution releasing agent.
Comparative example
Comparative example 1
A concrete admixture prepared by the preparation method described in the patent example 3 of the Chinese invention with the application publication number of CN 103641369A.
Comparative example 2
In this comparative example, which is to be compared with example 13, the ethylcellulose-coated calcium hydrogen sulfate in component a is replaced by calcium sulfate.
Performance test
The compressive strength and the splitting tensile strength are both determined by the method recorded in GB/T50081-2002 Standard test method for mechanical properties of ordinary concrete.
The initial setting time is measured by the method recorded in GB/T50080-2002 Standard test method for Performance of common concrete mixtures.
Detection method/test method
TABLE 2
The present application is further described below in conjunction with the test data provided in table 2.
With the embodiment 1-5, after ethyl cellulose is dissolved in ethanol, the bisulfate is slowly released, so that the initial setting time of concrete is prolonged, and the construction time of workers is sufficient; hydrogen ions ionized by the bisulfate consume hydroxide ions in the cement paste, so that the curing reaction of the cement is promoted; after sulfate ions ionized by the bisulfate are combined with calcium ions, the generated calcium sulfate reacts with tricalcium aluminate in the cement to promote the cement hardening, so that the cement has excellent early strength effect, and the compressive strength and the splitting tensile strength of the cured concrete are increased.
By combining the embodiments 1-5 and the comparative example 1, when early-strength components such as calcium sulfate are directly added into cement paste, the early-strength components react with substances in the cement immediately, so that the initial setting time of the concrete is short; if the component A containing the ethyl cellulose coated bisulfate is added firstly, the ethyl cellulose coated bisulfate is uniformly dispersed in cement paste, and then the alcohol dissolution releasing agent B is added to dissolve the ethyl cellulose, so that the bisulfate can be slowly released; the bisulfate ions ionize sulfate ions and hydrogen ions in water, the sulfate ions can generate calcium sulfate with calcium ions in cement paste, and the calcium sulfate can react with tricalcium aluminate in cement to generate water-insoluble hydrated calcium sulfoaluminate crystals to promote the hardening of the cement; the hydrogen ions can be combined with calcium hydroxide in the cement paste to promote the hydration reaction of tricalcium aluminate. The hydrated tricalcium aluminate generated after the tricalcium aluminate is hydrolyzed is difficult to dissolve in water and is continuously separated out along with the reaction, so that the hardening of the cement is accelerated.
By combining the example 13 and the comparative example 2, the calcium sulfate in the comparative example 2 has no ethyl cellulose coating, and plays a role in reducing water immediately after being added into cement paste, so the initial setting time of the comparative example 2 is short; however, in the embodiment 13, the calcium hydrogen sulfate is coated by the ethyl cellulose, so that the calcium hydrogen sulfate can fully act inside the concrete, solid phase precipitation in cement paste is more sufficient, and the compressive strength of the concrete is increased; in addition, compared with calcium sulfate, calcium bisulfate has higher solubility, can ionize hydrogen ions after being dissolved in water, and can consume calcium hydroxide in cement paste, thereby promoting the forward progress of cement curing reaction.
Combining example 3 and example 6, when the ethylcellulose shell is dissolved in ethanol, calcium chloride is combined with tricalcium aluminate in the cement slurry to generate water-insoluble hydrated calcium chloroaluminate, so that the solid phase precipitation rate in the cement slurry is increased, and the curing rate of the cement is increased.
The calcium chloride can also react with calcium hydroxide in the cement slurry to generate calcium oxychloride, so that the hydration reaction of tricalcium aluminate is promoted, and the curing of cement is promoted; in addition, the solubility of calcium oxychloride in water is low, and the calcium oxychloride is finally separated out from cement paste along with solid phases such as hydrated calcium chloroaluminate and hydrated tricalcium aluminate, so that the solidification of cement is accelerated.
Combining example 7 and example 9, when ethyl cellulose is dissolved in ethanol, sodium N-dimethyldithiocarbamate is dissolved in water and forms a complex which is difficult to dissolve in water with metal ions such as iron, aluminum and the like in cement paste, and the curing rate of cement is increased.
Combining examples 10 and 12, calcium lignosulfonate contains both hydrophobic and hydrophilic groups as compared to kaolin; when the calcium lignosulphonate is dissolved in water, the hydrophobic groups are adsorbed on the surfaces of solid particles in cement paste, the hydrophilic groups are dissolved in water, and the solid particles are mutually repelled due to the same charges on the surfaces under the combined action of the hydrophobic groups and the hydrophilic groups, so that the water among the particles is released, and the effect of reducing water and early strength is achieved.
Combining example 12 and example 13, the ethanol/triethanolamine formulation was not only able to dissolve ethylcellulose, but also had good complexing ability: the triethanolamine can generate a complex with metal ions such as iron, aluminum and the like in cement paste, the complex is further combined with hydrate of the cement to generate complex salt which is slightly soluble in the cement paste, and when the cement paste is solidified, the complex salt is separated out along with a solid phase, so that the solidification rate of the cement is increased.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The anti-freezing concrete water reducer is characterized by being prepared from the following components in parts by weight:
a: 1-5 parts of ethyl cellulose-coated bisulfate, 1-3 parts of a dispersing agent, 20-40 parts of a polycarboxylic acid water reducing agent, 1-4 parts of sodium gluconate and 50-80 parts of water;
b: 5-10 parts of an alcohol dissolution releasing agent.
2. The anti-freezing concrete water reducer according to claim 1, characterized in that: the ethyl cellulose coated hydrogen sulfate is one of ethyl cellulose coated calcium hydrogen sulfate, ethyl cellulose coated sodium hydrogen sulfate and ethyl cellulose coated magnesium hydrogen sulfate.
3. The anti-freezing concrete water reducer according to claim 1, characterized in that: the material A further comprises 1-5 parts of ethyl cellulose coated quick-setting regulator, and the ethyl cellulose coated quick-setting regulator is calcium chloride coated by ethyl cellulose.
4. The anti-freezing concrete water reducer according to claim 1, characterized in that: and the A also comprises 1-5 parts of ethyl cellulose coated complexing agent, and the ethyl cellulose coated complexing agent is ethyl cellulose coated sodium N-N dimethyl dithiocarbamate.
5. The anti-freezing concrete water reducer according to claim 1, characterized in that: the dispersant is kaolin or calcium lignosulfonate.
6. The anti-freezing concrete water reducer according to claim 1, characterized in that: the alcohol dissolution releasing agent is a compound of ethanol or ethanol/triethanolamine in a weight ratio of (3:5) to 1.
7. The anti-freezing concrete water reducer according to claim 1, characterized in that the ethyl cellulose coated bisulfate is prepared by the following method:
weighing ethyl cellulose, adding the ethyl cellulose into absolute ethyl alcohol, and fully dissolving to prepare an ethyl cellulose alcohol dissolving solution with the mass fraction of 2-8%;
spraying the ethyl cellulose alcohol dissolving solution on the surface of the bisulfate under the conditions that the temperature is 35-45 ℃ and the ventilation is performed;
drying at a constant temperature of 80-160 ℃, crushing, and sieving with a 200-800 mesh molecular sieve to obtain the ethyl cellulose coated bisulfate.
8. The preparation method of the antifreezing concrete water reducer of any one of claims 1 to 7, characterized by comprising the following steps:
weighing a polycarboxylic acid water reducing agent, sodium gluconate and water in parts by weight, and uniformly mixing to obtain a mixture 1;
adding the ethyl cellulose coated bisulfate into the mixture 1, and fully stirring to obtain A;
and weighing the alcohol dissolution releasing agent according to the weight parts to obtain B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570448.9A CN112645633A (en) | 2020-12-26 | 2020-12-26 | Antifreezing concrete water reducing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570448.9A CN112645633A (en) | 2020-12-26 | 2020-12-26 | Antifreezing concrete water reducing agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112645633A true CN112645633A (en) | 2021-04-13 |
Family
ID=75363152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011570448.9A Pending CN112645633A (en) | 2020-12-26 | 2020-12-26 | Antifreezing concrete water reducing agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112645633A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144011A (en) * | 2007-09-06 | 2008-03-19 | 中国石油大学(华东) | Microcapsule for retarding oil gas well working fluid additive release and preparation method thereof |
| CN102351459A (en) * | 2011-07-15 | 2012-02-15 | 清华大学 | Preparation method of sustained-release water reducer microcapsule |
| CN103641369A (en) * | 2013-11-26 | 2014-03-19 | 邢台市蓝天精细化工有限公司 | Concrete admixture |
| CN107572857A (en) * | 2016-07-04 | 2018-01-12 | 伊犁西部建设有限责任公司 | A kind of air entraining agent microcapsules and preparation method thereof |
| CN108467214A (en) * | 2018-03-31 | 2018-08-31 | 芜湖扬展新材料科技服务有限公司 | A kind of self-repairing of concrete cracks agent and preparation method thereof |
| CN108609880A (en) * | 2018-05-22 | 2018-10-02 | 深圳大学 | A kind of microcapsules and preparation method thereof and a kind of microcapsules armored concrete and preparation method thereof |
| CN111116077A (en) * | 2019-12-31 | 2020-05-08 | 扬州大学 | Active multifunctional carrier for microorganism self-repairing concrete and preparation method thereof |
| CN111499253A (en) * | 2020-04-15 | 2020-08-07 | 东南大学 | Microwave controlled release-based additive microcapsule and preparation method thereof |
| CN112125569A (en) * | 2020-08-28 | 2020-12-25 | 同济大学 | Response type concrete antifreeze agent and preparation method and application thereof |
| CN112679142A (en) * | 2020-12-26 | 2021-04-20 | 西盟司（上海）建筑工程材料有限公司 | High-strength epoxy mortar and preparation method thereof |
-
2020
- 2020-12-26 CN CN202011570448.9A patent/CN112645633A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144011A (en) * | 2007-09-06 | 2008-03-19 | 中国石油大学(华东) | Microcapsule for retarding oil gas well working fluid additive release and preparation method thereof |
| CN102351459A (en) * | 2011-07-15 | 2012-02-15 | 清华大学 | Preparation method of sustained-release water reducer microcapsule |
| CN103641369A (en) * | 2013-11-26 | 2014-03-19 | 邢台市蓝天精细化工有限公司 | Concrete admixture |
| CN107572857A (en) * | 2016-07-04 | 2018-01-12 | 伊犁西部建设有限责任公司 | A kind of air entraining agent microcapsules and preparation method thereof |
| CN108467214A (en) * | 2018-03-31 | 2018-08-31 | 芜湖扬展新材料科技服务有限公司 | A kind of self-repairing of concrete cracks agent and preparation method thereof |
| CN108609880A (en) * | 2018-05-22 | 2018-10-02 | 深圳大学 | A kind of microcapsules and preparation method thereof and a kind of microcapsules armored concrete and preparation method thereof |
| CN111116077A (en) * | 2019-12-31 | 2020-05-08 | 扬州大学 | Active multifunctional carrier for microorganism self-repairing concrete and preparation method thereof |
| CN111499253A (en) * | 2020-04-15 | 2020-08-07 | 东南大学 | Microwave controlled release-based additive microcapsule and preparation method thereof |
| CN112125569A (en) * | 2020-08-28 | 2020-12-25 | 同济大学 | Response type concrete antifreeze agent and preparation method and application thereof |
| CN112679142A (en) * | 2020-12-26 | 2021-04-20 | 西盟司（上海）建筑工程材料有限公司 | High-strength epoxy mortar and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 刘红飞: "《建筑外加剂》", 28 February 2006, 中国建筑工业出版社 * |
| 宋健等: "《微胶囊化技术及应用》", 30 September 2001, 化学工业出版社 * |
| 朱曲平主编: "《普通高等教育"十三五"规划教材 建筑材料》", 31 August 2017 * |
| 蒋正武等: "《水泥基自修复材料 理论与方法》", 31 January 2018, 同济大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6302954B1 (en) | Solidifying and hardening accelerator for hydraulic binders | |
| CN107473685B (en) | Fluorgypsum-based plastering material for interior walls and production process thereof | |
| CN104193211A (en) | Heating-free non-alkali liquid accelerator for jetting concrete and preparation method of heating-free non-alkali liquid accelerator | |
| US20110139037A1 (en) | Powdery Building Compound | |
| CN102046559B (en) | Mixture, in particular construction material mixture containing furnace slag | |
| JP2002541054A (en) | Improved composition based on cement | |
| US5660625A (en) | Use of basic aluminium sulphates as low-alkali set accelerators for cement | |
| TW201228982A (en) | Cement hydrate products for sprayed concrete | |
| CN101456697A (en) | Delayed coagulation pumping type three-expansion-source concrete expanding agent | |
| CN108516753B (en) | Dry-mixed mortar additive, dry-mixed mortar and preparation method thereof | |
| CN111995310B (en) | Super-retarding concrete and preparation method thereof | |
| CN112645633A (en) | Antifreezing concrete water reducing agent and preparation method thereof | |
| CN107311509A (en) | A kind of wet mixing mortar setting time conditioning agent and preparation method and application | |
| JP3516547B2 (en) | Spraying material and spraying method using it | |
| CN107162457B (en) | A kind of method of delayed ettringite formation in limitation concrete | |
| CN112299812A (en) | Magnesium-based light fireproof inorganic cementing material and preparation method thereof | |
| JPH1171145A (en) | Quick setting material, spraying material and quick setting spraying cement concrete | |
| CN102167526B (en) | Low-shrink alkali slag cement composition and preparation method thereof | |
| JP3007905B2 (en) | Soil improvement method | |
| JP4571483B2 (en) | Liquid expansion material | |
| CA2298328C (en) | Hydrated calcium aluminate based expansive admixture | |
| JP4510983B2 (en) | Method for producing setting control cement | |
| JP2004352596A (en) | Manufacturing method of hydraulic material and hydraulic building material | |
| JPS5926963A (en) | Hydraulic composition | |
| EP2726432B1 (en) | Hydraulic setting adhesive with improved open time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |
|
| RJ01 | Rejection of invention patent application after publication |