CN112341034A - Self-compacting waterproof agent for concrete structure and preparation method and application thereof - Google Patents
Self-compacting waterproof agent for concrete structure and preparation method and application thereof Download PDFInfo
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- CN112341034A CN112341034A CN202011141135.1A CN202011141135A CN112341034A CN 112341034 A CN112341034 A CN 112341034A CN 202011141135 A CN202011141135 A CN 202011141135A CN 112341034 A CN112341034 A CN 112341034A
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- 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
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- 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
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
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- 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)
- Sealing Material Composition (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The invention discloses a self-compacting waterproof agent for a concrete structure, a preparation method and application thereof, wherein the self-compacting waterproof agent for the concrete structure is prepared from the following components in parts by weight: 10-12 parts of magnesium fluosilicate, 5-8 parts of dispersing agent, 6-7 parts of ammonia water, 0.6-0.8 part of preservative, 110-120 parts of water, 3-5 parts of aluminum liquid, 3-5 parts of defoaming agent and 4-6 parts of stearic acid. When the self-compacting waterproof agent is applied, the self-compacting waterproof agent for the concrete structure is sprayed on the surface of concrete, the spraying amount is 0.2-0.4 kg/m2, the self-compacting waterproof agent is kept wet for 0.3-0.4 h, the concrete surface is enabled to fully absorb the concrete hardening waterproof agent and can permeate 0.8-1.2 cm, then the self-compacting waterproof agent is kept stand for 14-16 h, and the strength waterproof sealing effect can be displayed.
Description
Technical Field
The invention relates to the field of concrete waterproofing agents, in particular to a self-compacting waterproofing agent for a concrete structure and a preparation method and application thereof.
Background
The concrete is a comprehensive material consisting of sand, stone aggregate, cement, fly ash, mineral powder and water, and cement stone formed by grading and hydrating various raw materials is easy to generate water leakage of pores and cracks.
The concrete waterproof agent has the functions of improving the impermeability and the water resistance of concrete, has the effects of retarding coagulation, early strength, reducing water, resisting crack and the like, can improve the workability of newly mixed mortar, can replace lime paste, and is suitable for concrete for a single-storey house roof, large-volume waterproof concrete, hydraulic concrete, waterproof mortar and the like.
Although the waterproof agent in the current market can improve the water resistance of concrete to a certain extent, the waterproof agent has poor compatibility and cannot meet the waterproof performance and construction requirements of various types of concrete.
Disclosure of Invention
Therefore, the invention provides a self-compacting waterproof agent for a concrete structure, a preparation method and application thereof to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the self-compacting waterproof agent for the concrete structure is characterized by being prepared from the following components in parts by weight: 10-12 parts of magnesium fluosilicate, 5-8 parts of dispersing agent, 6-7 parts of ammonia water, 0.6-0.8 part of preservative, 110-120 parts of water, 3-5 parts of aluminum liquid, 3-5 parts of defoaming agent and 4-6 parts of stearic acid.
Specifically, the mass fraction of the ammonia water is 27%.
Specifically, the dispersant is one or more selected from sodium pyrophosphate, sodium hexametaphosphate and sodium gluconate.
Specifically, the preservative is selected from one or more of benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, calcium propionate, dehydroacetic acid, p-hydroxybenzoic acid, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate, butyl p-hydroxybenzoate, isopropyl p-hydroxybenzoate, isobutyl p-hydroxybenzoate and salicylic acid.
Specifically, the aluminum liquid is selected from one or more of an electrolytic aluminum solution, an aluminum sulfate solution and an aluminum chloride solution.
Specifically, the defoaming agent is selected from one or more of organic silicon defoaming agent, n-butyl alcohol, n-amyl alcohol and n-octyl alcohol.
Specifically, the acrylic acid esterified epoxy resin further comprises 2-3 parts of acrylic acid esterified epoxy resin, and the preparation method of the acrylic acid esterified epoxy resin comprises the following steps: uniformly mixing epoxy resin, a polymerization inhibitor and a catalyst, heating to 120-123 ℃, then dropwise adding acrylic acid, carrying out heat preservation reaction for 50-60 min, heating to 155-160 ℃, and carrying out heat preservation until the acid value test result is less than 0.7mg/g, thus obtaining the acrylated epoxy resin.
A preparation method of a self-compacting waterproofing agent for a concrete structure is characterized by comprising the following steps:
s1: uniformly mixing 10-12 parts of magnesium fluosilicate, 5-8 parts of dispersing agent and 45-60 parts of water, heating to 80-85 ℃, stirring for 0.2-0.3 h, and standing for 2-3 h to obtain a first mixed solution;
s2: uniformly mixing 7-8 parts of ammonia water, 1-1.2 parts of preservative, 5-8 parts of stearic acid and 25-35 parts of water, heating to 35-50 ℃, stirring for 1-1.5 hours, and standing for 2.5-3 hours to obtain a second mixed solution;
s3: uniformly mixing 3-5 parts of aluminum liquid, 3-5 parts of defoaming agent, 2-3 parts of acrylated epoxy resin and 25-35 parts of water, heating to 120-135 ℃, stirring for 0.5-1 h, and standing for 5-6 h to obtain a third mixed solution;
s4: and uniformly mixing the first mixed solution, the second mixed solution and the third mixed solution, stirring at normal temperature for 0.5-1 h, and standing for 6-8 h to obtain the self-compacting waterproof agent for the concrete structure.
The application of the self-compacting waterproofing agent for the concrete structure in the preparation of the concrete structure is characterized in that the self-compacting waterproofing agent for the concrete structure is mixed with concrete and then is stirred, poured, vibrated and maintained, wherein the using amount of the self-compacting waterproofing agent for the concrete structure is 1.5-2.3%.
Compared with the prior art, the invention has the beneficial effects that: the concrete structure self-compacting waterproof agent has high-efficiency compression-resistant water retention performance, when the concrete structure self-compacting waterproof agent is used, the concrete structure self-compacting waterproof agent is sprayed on the surface of concrete, the spraying amount is 0.2-0.4 kg/m2, the concrete structure self-compacting waterproof agent is kept moist for 0.3-0.4 h, the concrete surface is fully sucked with the concrete hardening waterproof agent, the concrete hardening waterproof agent can permeate 0.8-1.2 cm, and then the concrete structure self-compacting waterproof agent is kept stand for 14-16 h, so that the strength waterproof sealing effect can be displayed.
Drawings
FIG. 1 is a schematic flow chart of a method for preparing a self-compacting waterproofing agent for a concrete structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Example (b): referring to fig. 1, the present invention provides a technical solution: the self-compacting waterproof agent for the concrete structure is prepared from the following components in parts by weight: 10-12 parts of magnesium fluosilicate, 5-8 parts of dispersing agent, 6-7 parts of ammonia water, 0.6-0.8 part of preservative, 110-120 parts of water, 3-5 parts of aluminum liquid, 3-5 parts of defoaming agent and 4-6 parts of stearic acid.
In this example, the mass fraction of the ammonia water was 27%.
In this embodiment, the dispersant is one or more selected from sodium pyrophosphate, sodium hexametaphosphate, and sodium gluconate.
In this embodiment, the preservative is selected from one or more of benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, calcium propionate, dehydroacetic acid, parahydroxybenzoic acid, ethyl parahydroxybenzoate, propyl parahydroxybenzoate, butyl parahydroxybenzoate, isopropyl parahydroxybenzoate, isobutyl parahydroxybenzoate, and salicylic acid.
In this embodiment, the aluminum liquid is selected from one or more of an electrolytic aluminum solution, an aluminum sulfate solution and an aluminum chloride solution.
In this embodiment, the defoaming agent is selected from one or more of silicone defoaming agent, n-butanol, n-pentanol and n-octanol.
In the embodiment, the acrylic acid esterified epoxy resin also comprises 2-3 parts of acrylic acid esterified epoxy resin, and the preparation method of the acrylic acid esterified epoxy resin comprises the following steps: uniformly mixing epoxy resin, a polymerization inhibitor and a catalyst, heating to 120-123 ℃, then dropwise adding acrylic acid, carrying out heat preservation reaction for 50-60 min, heating to 155-160 ℃, and carrying out heat preservation until the acid value test result is less than 0.7mg/g, thus obtaining the acrylated epoxy resin.
A preparation method of a self-compacting waterproofing agent for a concrete structure is characterized by comprising the following steps:
s1: uniformly mixing 10-12 parts of magnesium fluosilicate, 5-8 parts of dispersing agent and 45-60 parts of water, heating to 80-85 ℃, stirring for 0.2-0.3 h, and standing for 2-3 h to obtain a first mixed solution;
s2: uniformly mixing 7-8 parts of ammonia water, 1-1.2 parts of preservative, 5-8 parts of stearic acid and 25-35 parts of water, heating to 35-50 ℃, stirring for 1-1.5 hours, and standing for 2.5-3 hours to obtain a second mixed solution;
s3: uniformly mixing 3-5 parts of aluminum liquid, 3-5 parts of defoaming agent, 2-3 parts of acrylated epoxy resin and 25-35 parts of water, heating to 120-135 ℃, stirring for 0.5-1 h, and standing for 5-6 h to obtain a third mixed solution;
s4: and uniformly mixing the first mixed solution, the second mixed solution and the third mixed solution, stirring at normal temperature for 0.5-1 h, and standing for 6-8 h to obtain the self-compacting waterproof agent for the concrete structure.
The application of the self-compacting waterproofing agent for the concrete structure in the preparation of the concrete structure is characterized in that the self-compacting waterproofing agent for the concrete structure is mixed with concrete and then is stirred, poured, vibrated and maintained, wherein the using amount of the self-compacting waterproofing agent for the concrete structure is 1.5-2.3%.
According to the experimental data of the self-compacting waterproof agent for the concrete structure, the following results are obtained:
a. mixing amount: 10-12% of a cementing material;
b. water reducing rate: 10-22% (adjusted according to the requirements of users), and the slump is improved by more than 10cm compared with that of the standard concrete;
c. compressive strength: the strength of 7d and 28d is improved by 10-20% compared with that of the standard concrete;
d. shrinkage-compensating concrete limited expansion rate: 14d in water is more than or equal to 1.5 multiplied by 10-4；
e. The hydration heat can be reduced by more than 10-15%;
f. durability: the anti-permeability grade is more than P30, and the anti-freezing grade is more than F200; the anti-carbonization capability is improved by 2-4 times compared with that of common concrete, and the alkali content and the chloride ion content are low; it has no corrosion to reinforcing steel bar, no toxicity, no smell and no influence on water quality.
g. The shelf life is one year, and after expiration, the physical performance test is carried out again, and the product can be used continuously after being determined.
h. Should be placed in dry place, strictly protected from moisture, if block, should be pulverized for use, and its performance is unchanged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The self-compacting waterproof agent for the concrete structure is characterized by being prepared from the following components in parts by weight: 10-12 parts of magnesium fluosilicate, 5-8 parts of dispersing agent, 6-7 parts of ammonia water, 0.6-0.8 part of preservative, 110-120 parts of water, 3-5 parts of aluminum liquid, 3-5 parts of defoaming agent and 4-6 parts of stearic acid.
2. The self-compacting waterproofing agent for concrete structures according to claim 1, wherein the mass fraction of ammonia water is 27%.
3. The self-compacting waterproofing agent for concrete structures according to claim 1, wherein the dispersing agent is one or more selected from sodium pyrophosphate, sodium hexametaphosphate and sodium gluconate.
4. The self-compacting waterproofing agent for concrete structures according to claim 1, wherein the preservative is one or more selected from the group consisting of benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, calcium propionate, dehydroacetic acid, p-hydroxybenzoic acid, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate, butyl p-hydroxybenzoate, isopropyl p-hydroxybenzoate, isobutyl p-hydroxybenzoate and salicylic acid.
5. The self-compacting waterproofing agent for concrete structures according to claim 1, wherein the aluminum liquid is one or more selected from the group consisting of an electrolytic aluminum solution, an aluminum sulfate solution and an aluminum chloride solution.
6. The self-compacting waterproofing agent for concrete structures according to claim 1, wherein the defoaming agent is one or more selected from the group consisting of silicone defoaming agents, n-butanol, n-pentanol and n-octanol.
7. The self-compacting waterproof agent for the concrete structure according to claim 1, further comprising 2-3 parts of acrylated epoxy resin, wherein the preparation method of the acrylated epoxy resin comprises the following steps: uniformly mixing epoxy resin, a polymerization inhibitor and a catalyst, heating to 120-123 ℃, then dropwise adding acrylic acid, carrying out heat preservation reaction for 50-60 min, heating to 155-160 ℃, and carrying out heat preservation until the acid value test result is less than 0.7mg/g, thus obtaining the acrylated epoxy resin.
8. The method for producing a self-compacting waterproofing agent for a concrete structure recited in any one of claims 1 to 7, comprising the steps of:
s1: uniformly mixing 10-12 parts of magnesium fluosilicate, 5-8 parts of dispersing agent and 45-60 parts of water, heating to 80-85 ℃, stirring for 0.2-0.3 h, and standing for 2-3 h to obtain a first mixed solution;
s2: uniformly mixing 7-8 parts of ammonia water, 1-1.2 parts of preservative, 5-8 parts of stearic acid and 25-35 parts of water, heating to 35-50 ℃, stirring for 1-1.5 hours, and standing for 2.5-3 hours to obtain a second mixed solution;
s3: uniformly mixing 3-5 parts of aluminum liquid, 3-5 parts of defoaming agent, 2-3 parts of acrylated epoxy resin and 25-35 parts of water, heating to 120-135 ℃, stirring for 0.5-1 h, and standing for 5-6 h to obtain a third mixed solution;
s4: and uniformly mixing the first mixed solution, the second mixed solution and the third mixed solution, stirring at normal temperature for 0.5-1 h, and standing for 6-8 h to obtain the self-compacting waterproof agent for the concrete structure.
9. The use of the self-compacting waterproofing agent for concrete structures according to any one of claims 1 to 7 for the preparation of concrete structures, wherein the self-compacting waterproofing agent for concrete structures is mixed with concrete and then stirred, poured, vibrated and cured, wherein the amount of the self-compacting waterproofing agent for concrete structures is 1.5 to 2.3%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141135.1A CN112341034A (en) | 2020-10-22 | 2020-10-22 | Self-compacting waterproof agent for concrete structure and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011141135.1A CN112341034A (en) | 2020-10-22 | 2020-10-22 | Self-compacting waterproof agent for concrete structure and preparation method and application thereof |
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| CN112341034A true CN112341034A (en) | 2021-02-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548829A (en) * | 2021-08-28 | 2021-10-26 | 石家庄固盾防水保护材料有限公司 | Concrete intelligent self-repairing waterproof anticorrosion compacting agent and preparation method thereof |
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| KR20030044767A (en) * | 2002-07-20 | 2003-06-09 | 주식회사트라이포드 | Liquid-phase admixture components of dual components based on fluosilicate salt for improving waterproofing and strength of concrete and its manufacturing method |
| CN102690077A (en) * | 2011-03-25 | 2012-09-26 | 苏琳 | Anticorrosion expansion compacting agent composition and preparation method thereof |
| CN105645825A (en) * | 2015-12-22 | 2016-06-08 | 张淑芬 | Novel waterproof agent for improving waterproof and impervious performances of concrete |
| CN107254255A (en) * | 2017-06-14 | 2017-10-17 | 上海西亚化工工贸有限公司 | Concrete hardening waterproofing agent and preparation method thereof and application method |
| CN111233370A (en) * | 2020-01-19 | 2020-06-05 | 广西大胡子防水科技有限公司 | Self-compacting waterproof agent for concrete structure and preparation method and application thereof |
-
2020
- 2020-10-22 CN CN202011141135.1A patent/CN112341034A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030044767A (en) * | 2002-07-20 | 2003-06-09 | 주식회사트라이포드 | Liquid-phase admixture components of dual components based on fluosilicate salt for improving waterproofing and strength of concrete and its manufacturing method |
| CN102690077A (en) * | 2011-03-25 | 2012-09-26 | 苏琳 | Anticorrosion expansion compacting agent composition and preparation method thereof |
| CN105645825A (en) * | 2015-12-22 | 2016-06-08 | 张淑芬 | Novel waterproof agent for improving waterproof and impervious performances of concrete |
| CN107254255A (en) * | 2017-06-14 | 2017-10-17 | 上海西亚化工工贸有限公司 | Concrete hardening waterproofing agent and preparation method thereof and application method |
| CN111233370A (en) * | 2020-01-19 | 2020-06-05 | 广西大胡子防水科技有限公司 | Self-compacting waterproof agent for concrete structure and preparation method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548829A (en) * | 2021-08-28 | 2021-10-26 | 石家庄固盾防水保护材料有限公司 | Concrete intelligent self-repairing waterproof anticorrosion compacting agent and preparation method thereof |
| CN113548829B (en) * | 2021-08-28 | 2022-08-05 | 石家庄固盾防水保护材料有限公司 | Concrete intelligent self-repairing waterproof anticorrosion compacting agent and preparation method thereof |
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