CN110606692A - Composite efficient concrete additive and preparation method thereof - Google Patents
Composite efficient concrete additive and preparation method thereof Download PDFInfo
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- CN110606692A CN110606692A CN201910985479.1A CN201910985479A CN110606692A CN 110606692 A CN110606692 A CN 110606692A CN 201910985479 A CN201910985479 A CN 201910985479A CN 110606692 A CN110606692 A CN 110606692A
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- sodium sulfate
- concrete admixture
- sodium
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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
-
- 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
-
- 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
-
- 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
- C04B2103/601—Agents for increasing frost resistance
-
- 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
- C04B2103/61—Corrosion inhibitors
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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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
20-40 parts of sodium sulfate, 20-40 parts of calcium chloride, 20-40 parts of kaolin, 10-30 parts of silica fume, 10-30 parts of pure acrylic acid, 10-30 parts of methyl cellulose, 10-20 parts of sulfamate, 10-20 parts of glycolic acid, 5-10 parts of ethylene glycol, 5-10 parts of urea, 5-10 parts of sodium sulfate, 5-10 parts of fly ash, 5-10 parts of triethanolamine, 2-8 parts of sodium gluconate, 2-8 parts of a quick-setting agent, 2-8 parts of a polycarboxylic acid water reducing agent, 2-8 parts of an air entraining agent, 2-8 parts of a surfactant, 2-8 parts of a superplasticizer and 10-20 parts of crushed corn straw. The invention obviously improves the strength performance of concrete, effectively reduces the dust concentration of a construction site, improves the frost resistance, impermeability and corrosion resistance of the concrete, prolongs the construction period, and has the characteristics of higher water reducing rate and segregation resistance.
Description
Technical Field
The invention relates to a composite high-efficiency concrete admixture and a preparation method thereof, in particular to a polycarboxylic acid concrete admixture and a preparation method thereof.
Background
The concrete admixture is a substance to be incorporated during the process of mixing concrete for improving the performance of the concrete, and is incorporated in an amount of not more than 5% by mass of the cement according to the provisions of the relevant technical standards. The concrete admixture has the main functions of improving the performance of fresh concrete and enhancing the performance of hardened concrete. The additive can effectively improve the performance of concrete and has good economic benefit.
At present, the more used additives in the concrete additive market are naphthalene water reducers and aliphatic water reducers. The naphthalene water reducer is low in price, but when the temperature is lower than 15 ℃, the problems of too fast slump loss, easy crystallization in winter and the like occur, and the water reducing rate is general; the aliphatic high-efficiency water reducing agent has wide applicability to cement, obvious reinforcing effect on concrete, small slump loss and no sodium sulfate crystallization phenomenon at low temperature, but has the defect that the color is over red, a plurality of mixing stations are unwilling to use, and the concrete construction requirements cannot be met.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and provides the composite high-efficiency concrete admixture and the preparation method thereof, which can obviously improve the strength performance of concrete, effectively reduce the dust concentration of a construction site, improve the frost resistance, impermeability and corrosion resistance of the concrete, prolong the construction period, and have the characteristics of high water reducing rate and segregation resistance.
The composite high-efficiency concrete admixture comprises the following raw materials in parts by weight: 20-40 parts of sodium sulfate, 20-40 parts of calcium chloride, 20-40 parts of kaolin, 10-30 parts of silica fume, 10-30 parts of pure acrylic acid, 10-30 parts of methyl cellulose, 10-20 parts of sulfamate, 10-20 parts of glycolic acid, 5-10 parts of ethylene glycol, 5-10 parts of urea, 5-10 parts of sodium sulfate, 5-10 parts of fly ash, 5-10 parts of triethanolamine, 2-8 parts of sodium gluconate, 2-8 parts of an accelerator, 2-8 parts of a polycarboxylic acid water reducer, 2-8 parts of an air entraining agent, 2-8 parts of a surfactant, 2-8 parts of a superplasticizer and 10-20 parts of crushed corn straw.
The air entraining agent consists of sodium dodecyl sulfate and sodium dodecyl sulfate.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the raw materials of sodium sulfate, calcium chloride, kaolin, silica fume, pure acrylic acid, methyl cellulose, sulfamate, glycolic acid, glycol, urea, sodium sulfate, fly ash, triethanolamine, sodium gluconate and crushed corn straw according to the mass and formula ratio;
step two: adding an accelerator and a polycarboxylic acid water reducing agent into the mixture for copolymerization reaction, and then putting the composition into a water bath kettle to be heated until the composition is fully dissolved;
step three: standing the mixed materials for 3.5-5.5 hours;
step four: and (3) adding the air entraining agent, the surfactant and the superplasticizer into the mixture prepared in the third step, uniformly stirring, and finally drying the obtained precipitate at room temperature to obtain the composite efficient concrete admixture.
And the temperature rise speed in the second step is 5 ℃/min, the temperature is raised to 65-75 ℃, and the stirring is kept at the constant temperature for 45-55 min.
And in the fourth step, the room temperature is kept at 12-18 ℃, and the drying time is kept for 32-36 h.
Has the advantages that: the invention obviously improves the strength performance of concrete, effectively reduces the dust concentration of a construction site, has good effects of improving the frost resistance, impermeability and corrosion resistance of the concrete and prolonging the construction period, and also has the characteristics of higher water reducing rate and segregation resistance.
Detailed Description
The present invention will be described in further detail by way of examples.
Example 1
The composite high-efficiency concrete admixture comprises the following raw materials in parts by weight: 20 parts of sodium sulfate, 20 parts of calcium chloride, 20 parts of kaolin, 10 parts of silica fume, 10 parts of pure acrylic acid, 10 parts of methyl cellulose, 10 parts of sulfamate, 10 parts of glycolic acid, 5 parts of ethylene glycol, 5 parts of urea, 5 parts of sodium sulfate, 5 parts of fly ash, 5 parts of triethanolamine, 2 parts of sodium gluconate, 2 parts of an accelerating agent, 2 parts of a polycarboxylic acid water reducing agent, 2 parts of an air entraining agent, 2 parts of a surfactant, 2 parts of a superplasticizer and 10 parts of corn straw crushed materials.
Further, the air entraining agent consists of sodium dodecyl sulfate and sodium dodecyl sulfate.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the raw materials of sodium sulfate, calcium chloride, kaolin, silica fume, pure acrylic acid, methyl cellulose, sulfamate, glycolic acid, glycol, urea, sodium sulfate, fly ash, triethanolamine, sodium gluconate and crushed corn straw according to the mass and formula ratio;
step two: adding an accelerator and a polycarboxylic acid water reducing agent into the mixture for copolymerization reaction, and then putting the composition into a water bath kettle to be heated until the composition is fully dissolved;
step three: standing the mixed materials for 3.5 hours;
step four: and (3) adding the air entraining agent, the surfactant and the superplasticizer into the mixture prepared in the third step, uniformly stirring, and finally drying the obtained precipitate at room temperature to obtain the composite efficient concrete admixture.
Further, the temperature rising speed in the second step is 5 ℃/min, the temperature rises to 65 ℃, and the stirring is kept at the constant temperature for 45 min.
Further, in the fourth step, the room temperature is kept at 12 ℃, and the drying time is kept for 32 hours.
Example 2
The composite high-efficiency concrete admixture comprises the following raw materials in parts by weight: 30 parts of sodium sulfate, 30 parts of calcium chloride, 30 parts of kaolin, 20 parts of silica fume, 20 parts of pure acrylic acid, 20 parts of methyl cellulose, 15 parts of sulfamate, 15 parts of glycolic acid, 7.5 parts of ethylene glycol, 7.5 parts of urea, 7.5 parts of sodium sulfate, 7.5 parts of fly ash, 7.5 parts of triethanolamine, 5 parts of sodium gluconate, 5 parts of an accelerating agent, 5 parts of a polycarboxylic acid water reducing agent, 5 parts of an air entraining agent, 5 parts of a surfactant, 5 parts of a superplasticizer and 15 parts of a crushed corn straw.
Further, the air entraining agent consists of sodium dodecyl sulfate and sodium dodecyl sulfate.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the raw materials of sodium sulfate, calcium chloride, kaolin, silica fume, pure acrylic acid, methyl cellulose, sulfamate, glycolic acid, glycol, urea, sodium sulfate, fly ash, triethanolamine, sodium gluconate and crushed corn straw according to the mass and formula ratio;
step two: adding an accelerator and a polycarboxylic acid water reducing agent into the mixture for copolymerization reaction, and then putting the composition into a water bath kettle to be heated until the composition is fully dissolved;
step three: standing the mixed materials for 4.5 hours;
step four: and (3) adding the air entraining agent, the surfactant and the superplasticizer into the mixture prepared in the third step, uniformly stirring, and finally drying the obtained precipitate at room temperature to obtain the composite efficient concrete admixture.
Further, the temperature rising speed in the second step is 5 ℃/min, the temperature is raised to 70 ℃, and the constant temperature is kept and the stirring is carried out for 50 min.
Further, the room temperature in the fourth step is kept at 15 ℃, and the drying time is kept for 34 h.
Example 3
The composite high-efficiency concrete admixture comprises the following raw materials in parts by weight: 40 parts of sodium sulfate, 40 parts of calcium chloride, 40 parts of kaolin, 30 parts of silica fume, 30 parts of pure acrylic acid, 30 parts of methyl cellulose, 20 parts of sulfamate, 20 parts of glycolic acid, 10 parts of ethylene glycol, 10 parts of urea, 10 parts of sodium sulfate, 10 parts of fly ash, 10 parts of triethanolamine, 8 parts of sodium gluconate, 8 parts of an accelerating agent, 8 parts of a polycarboxylic acid water reducing agent, 8 parts of an air entraining agent, 8 parts of a surfactant, 8 parts of a superplasticizer and 20 parts of corn straw crushed materials.
Further, the air entraining agent consists of sodium dodecyl sulfate and sodium dodecyl sulfate.
The preparation method comprises the following steps:
the method comprises the following steps: mixing the raw materials of sodium sulfate, calcium chloride, kaolin, silica fume, pure acrylic acid, methyl cellulose, sulfamate, glycolic acid, glycol, urea, sodium sulfate, fly ash, triethanolamine, sodium gluconate and crushed corn straw according to the mass and formula ratio;
step two: adding an accelerator and a polycarboxylic acid water reducing agent into the mixture for copolymerization reaction, and then putting the composition into a water bath kettle to be heated until the composition is fully dissolved;
step three: standing the mixed materials for 5.5 hours;
step four: and (3) adding the air entraining agent, the surfactant and the superplasticizer into the mixture prepared in the third step, uniformly stirring, and finally drying the obtained precipitate at room temperature to obtain the composite efficient concrete admixture.
Further, the temperature rising speed in the second step is 5 ℃/min, the temperature is raised to 75 ℃, and the stirring is kept at the constant temperature for 55 min.
Further, the room temperature in the fourth step is kept at 18 ℃, and the drying time is kept for 36 hours.
Claims (5)
1. The composite high-efficiency concrete admixture is characterized by comprising the following raw materials in parts by weight: 20-40 parts of sodium sulfate, 20-40 parts of calcium chloride, 20-40 parts of kaolin, 10-30 parts of silica fume, 10-30 parts of pure acrylic acid, 10-30 parts of methyl cellulose, 10-20 parts of sulfamate, 10-20 parts of glycolic acid, 5-10 parts of ethylene glycol, 5-10 parts of urea, 5-10 parts of sodium sulfate, 5-10 parts of fly ash, 5-10 parts of triethanolamine, 2-8 parts of sodium gluconate, 2-8 parts of an accelerator, 2-8 parts of a polycarboxylic acid water reducer, 2-8 parts of an air entraining agent, 2-8 parts of a surfactant, 2-8 parts of a superplasticizer and 10-20 parts of crushed corn straw.
2. The compound high-efficiency concrete admixture according to claim 1, which is characterized in that: the air entraining agent consists of sodium dodecyl sulfate and sodium dodecyl sulfate.
3. The preparation method of the compound high-efficiency concrete admixture as claimed in claim 1, which is characterized in that: the method comprises the following steps:
the method comprises the following steps: mixing the raw materials of sodium sulfate, calcium chloride, kaolin, silica fume, pure acrylic acid, methyl cellulose, sulfamate, glycolic acid, glycol, urea, sodium sulfate, fly ash, triethanolamine, sodium gluconate and crushed corn straw according to the mass and formula ratio;
step two: adding an accelerator and a polycarboxylic acid water reducing agent into the mixture for copolymerization reaction, and then putting the composition into a water bath kettle to be heated until the composition is fully dissolved;
step three: standing the mixed materials for 3.5-5.5 hours;
step four: and (3) adding the air entraining agent, the surfactant and the superplasticizer into the mixed natural material prepared in the third step, uniformly stirring, and finally drying the obtained precipitate at room temperature to obtain the composite efficient concrete admixture.
4. The preparation method of the compound high-efficiency concrete admixture as claimed in claim 3, which is characterized in that: and the temperature rise speed in the second step is 5 ℃/min, the temperature is raised to 65-75 ℃, and the stirring is kept at the constant temperature for 45-55 min.
5. The preparation method of the compound high-efficiency concrete admixture as claimed in claim 3, which is characterized in that: and in the fourth step, the room temperature is kept at 12-18 ℃, and the drying time is kept for 32-36 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910985479.1A CN110606692A (en) | 2019-10-17 | 2019-10-17 | Composite efficient concrete additive and preparation method thereof |
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| CN201910985479.1A CN110606692A (en) | 2019-10-17 | 2019-10-17 | Composite efficient concrete additive and preparation method thereof |
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| CN110606692A true CN110606692A (en) | 2019-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024036369A1 (en) * | 2022-08-16 | 2024-02-22 | Boral Resources (Wa) Limited | Cementitious compositions and related methods |
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| CN101139185A (en) * | 2007-08-13 | 2008-03-12 | 杨汤群 | Heat-insulating mortar additive, coal ash polyphenyl particle heat-insulating mortar and method for making same |
| US20130098271A1 (en) * | 2009-11-11 | 2013-04-25 | Michael Eberwein | Dry mortar mixture |
| CN105130258A (en) * | 2015-08-24 | 2015-12-09 | 湖州华仑助剂科技有限公司 | Efficient concrete additive |
| CN105130245A (en) * | 2015-08-24 | 2015-12-09 | 湖州华仑助剂科技有限公司 | Road concrete additive |
| US20180162777A1 (en) * | 2016-12-12 | 2018-06-14 | United States Gypsum Company | Self-desiccating, dimensionally-stable hydraulic cement compositions with enhanced workability |
| CN109133709A (en) * | 2018-09-04 | 2019-01-04 | 徐州金盟新型建材有限公司 | A kind of cement concrete admixture of quickly repairing cement concrete roads |
| CN109336454A (en) * | 2018-09-04 | 2019-02-15 | 江苏兆佳建材科技有限公司 | A kind of novel concrete based composites additive formula |
-
2019
- 2019-10-17 CN CN201910985479.1A patent/CN110606692A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139185A (en) * | 2007-08-13 | 2008-03-12 | 杨汤群 | Heat-insulating mortar additive, coal ash polyphenyl particle heat-insulating mortar and method for making same |
| US20130098271A1 (en) * | 2009-11-11 | 2013-04-25 | Michael Eberwein | Dry mortar mixture |
| CN105130258A (en) * | 2015-08-24 | 2015-12-09 | 湖州华仑助剂科技有限公司 | Efficient concrete additive |
| CN105130245A (en) * | 2015-08-24 | 2015-12-09 | 湖州华仑助剂科技有限公司 | Road concrete additive |
| US20180162777A1 (en) * | 2016-12-12 | 2018-06-14 | United States Gypsum Company | Self-desiccating, dimensionally-stable hydraulic cement compositions with enhanced workability |
| CN109133709A (en) * | 2018-09-04 | 2019-01-04 | 徐州金盟新型建材有限公司 | A kind of cement concrete admixture of quickly repairing cement concrete roads |
| CN109336454A (en) * | 2018-09-04 | 2019-02-15 | 江苏兆佳建材科技有限公司 | A kind of novel concrete based composites additive formula |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024036369A1 (en) * | 2022-08-16 | 2024-02-22 | Boral Resources (Wa) Limited | Cementitious compositions and related methods |
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Application publication date: 20191224 |