CN102674747A - Liquid concrete anti-freezing agent - Google Patents
Liquid concrete anti-freezing agent Download PDFInfo
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- CN102674747A CN102674747A CN2012101504586A CN201210150458A CN102674747A CN 102674747 A CN102674747 A CN 102674747A CN 2012101504586 A CN2012101504586 A CN 2012101504586A CN 201210150458 A CN201210150458 A CN 201210150458A CN 102674747 A CN102674747 A CN 102674747A
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Abstract
The invention provides a liquid concrete anti-freezing agent, solving the problem of anti-freezing in winter construction of construction engineering. The liquid concrete anti-freezing agent is characterized by comprising the following components in part by weight: 10-25 parts of polycarboxylic acid high performance water reducing agent, 0.1-0.2 parts of nonylphenol ethoxylates, 1-3 parts of lithium sulfate, 2-5 parts of organic alcohol amine and 50-60 parts of water. The liquid concrete anti-freezing agent is prepared by uniformly mixing and stirring the components. The liquid concrete anti-freezing agent provided by the invention can be constructed at the temperature -5 to -20 DEG C, and has the advantages of nontoxic property, alkali-free property, chlorine-free property and ammonia-free release, proper water reducing amount, suitable concrete slump constant, short coagulation time, and good adaptability with cement. The liquid concrete anti-freezing agent obviously improves properties of concrete which is stirred just now and cured concrete, and can be widely applicable to a reinforced concrete structure in the winter construction.
Description
Affiliated technical field
The invention belongs to the technical field that material of construction is made, be specifically related to a kind of liquid antifreezerfor concrete, be adapted to the building engineering construction in winter.
Background technology
In the northern China winter construction, for the quality that guarantees engineering prevents concrete generation freeze injury, mainly take two kinds of safeguard procedures, the one, adopt to cover or go along with sb. to guard him temperature-rising method and prevent that concrete temperature from reducing to below 0 ℃, this method cost is high, complicated operating process; The 2nd, admixture frostproofer in concrete, this method construction is simple, and effect is also better, has therefore obtained widespread use.Up to the present, the frostproofer that uses in the construction work both at home and abroad all is formulated with accelerating component, antifreezing component and bleed component.Wherein accelerating component comprises vitriol, carbonate, nitrate salt, organic alcohol amine etc., and wherein majority is a sodium salt; Methyl alcohol, nitrite, nitrate salt, villaumite, urea and ammoniacal liquor etc. are arranged in the antifreezing component.Methyl alcohol is volatile and poisonous; Villaumite can be to steel bar corrosion, and work-ing life is built in influence; Urea, ammoniacal liquor etc. discharge irritating smell, influence quality of life, and nitrite has carcinogenesis, and is prone to cause the concrete alkali aggregate reaction, bad phenomenon such as the accumulation of salt in the surface soil, and the influence building is used and visual appearance.The bleed component is main with alkyl sulfonates, rosined soap class, triterpene saponin etc., and wherein AS series products institute bleed bubble is even inadequately, and the bubble diameter distribution range is wider, and is bigger to the concrete strength influence; Other two series products are slightly better than alkyl sulfonates product performance, but price is higher.
Summary of the invention
The object of the invention is exactly for overcoming above defective; Provide a kind of when actual temperature is lower than concrete design withstand temp; Can effectively avoid the freeze injury of concrete accident to take place, on starting material are selected, not use simultaneously reinforcing bar to be harmful to the deleterious raw material of people; Good effect of freezing protection, a kind of simply and easily liquid antifreezerfor concrete of constructing.
Technical scheme of the present invention is to realize like this; Described a kind of liquid antifreezerfor concrete is characterized in that being processed by the component of following weight part: 50～65 parts in 10～25 parts of high performance water reducing agent of polyocarboxy acid, 0.1～0.2 part of polyoxyethylene nonylphenol, 1～3 part of Lithium Sulphate, 2～5 parts of organic alcohol amines and water.Said high performance water reducing agent of polyocarboxy acid is for gathering the big monomer ether-toxilic acid of isopentene alcohol methoxyl group-macromolecular grafted polymkeric substance of methylacrylic acid.The preparation high performance water reducing agent of polyocarboxy acid is with producing with deionized water, gather in isopentene alcohol big monomer ether of methoxyl group and maleic anhydride (three's weight ratio is 0.8: 1: 0.3) the input reaction kettle, being warming up to 75 ℃; The adding mass concentration is 35% ydrogen peroxide 50, stirs, and said ydrogen peroxide 50 is 0.001: 1 with the weight ratio of gathering the big monomer ether of isopentene alcohol methoxyl group; Be warming up to 90 ℃, drip persulfuric acid and receive and initiator solution, said persulfuric acid is received, initiator, to gather the big monomer ether of isopentene alcohol methoxyl group weight ratio be 0.001: 0.002: 1; Said initiator Thiovanic acid drips and dripped off in 2-3 hour, is incubated 1-2 hour; After being cooled to 50 ℃; Adding mass concentration is 30% sodium hydroxide solution, and solution weight concentration is about 40% to the reaction kettle, makes polycarboxylate water-reducer.Get high performance water reducing agent of polyocarboxy acid 15 weight parts,, polyoxyethylene nonylphenol 0.15 weight part, Lithium Sulphate 1 weight part and diethylolamine 2 weight parts, mix, stir 0.5h after, add the water of 60 weight parts, stir 10min and get final product.Said organic alcohol amine is trolamine, diethylolamine or tri-isopropanolamine.The preparation technology of above-mentioned cement concrete frostproofer: with above-mentioned starting material mixing, behind stirring 0.5～1h, add entry according to the design proportioning, stir 10-20min and get final product.Polyoxyethylene nonylphenol mainly is the bleed effect, can form a large amount of micro bubbles, reduces the concrete frost heave stress.
The beneficial effect of a kind of liquid antifreezerfor concrete of the present invention is: when concrete use temperature is lower than predetermined, the water in the concrete freezes, because a large amount of micro-bubbles that have polyoxyethylene nonylphenol to form; Water is squeezed in the bubble; Influence to concrete structure significantly reduces, and to the not influence of concrete later strength, is unlikely to occur to be lower than the temperature that presupposes because of in situ temperature; And cause freezing of coagulation water in soil, finally cause concrete occurred by the accident of freeze injury.And the present invention can significantly reduce the freezing point of concrete mix; Can be-5～-20 ℃ of down constructions, have that nontoxic, alkali-free, no chlorine, no ammonia discharge, diminishing is suitable, concrete slump keeps, time of coagulation weak point, and cement adaptability good; Significantly improve the characteristics such as performance after concrete newly mixes and stirs sclerosis; 7 days intensity of regulation negative temperature conservation reaches more than 20% of normal curing in 28 days, and negative temperature conservation transfers 28 days intensity of normal curing to and reaches more than 120% of normal curing after 7 days, and concrete is more durable work-ing life; Be a kind of high performance concrete frostproofer, can be adaptable across the skeleton construction of winter construction.
Table 1 frostproofer The performance test results
Can find out by table 1; 7 days intensity of negative temperature conservation of the present invention (7 days compressive strength rates) reaches more than 20% of normal curing in 28 days; Negative temperature conservation transfers 28 days intensity of normal curing (7+28 days compressive strength rates) to and reaches more than 120% of normal curing after 7 days; Concrete is more durable work-ing life, is a kind of high performance concrete frostproofer, can be adaptable across the skeleton construction of winter construction.
Embodiment
Embodiment 1
At first; Preparation polycarboxylate water-reducer: will produce with deionized water, gather in isopentene alcohol big monomer ether of methoxyl group and maleic anhydride (three's weight ratio is 0.8: 1: 0.3) the input reaction kettle; Be warming up to 75 ℃; The adding mass concentration is 35% ydrogen peroxide 50, stirs, and said ydrogen peroxide 50 is 0.001: 1 with the weight ratio of gathering the big monomer ether of isopentene alcohol methoxyl group; Be warming up to 90 ℃, drip persulfuric acid and receive and initiator solution, said persulfuric acid is received, initiator, to gather the big monomer ether of isopentene alcohol methoxyl group weight ratio be 0.001: 0: 002: 1; Said initiator Thiovanic acid drips and dripped off in 2-3 hour, is incubated 1-2 hour; After being cooled to 50 ℃; Adding mass concentration is 30% sodium hydroxide solution, and solution weight concentration is about 40% to the reaction kettle, makes polycarboxylate water-reducer.Take by weighing high performance water reducing agent of polyocarboxy acid 15 weight parts, polyoxyethylene nonylphenol 0.15 weight part, Lithium Sulphate 1 weight part and diethylolamine 2 weight parts, mix, behind the stirring 0.5h, add the water of 60 weight parts, stir 10min and get final product.
Embodiment 2
The preparation method of high performance water reducing agent of polyocarboxy acid is with embodiment one.Take by weighing high performance water reducing agent of polyocarboxy acid 30 weight parts, polyoxyethylene nonylphenol 0.1 weight part, Lithium Sulphate 2 weight parts and tri-isopropanolamine 5 weight parts, mix, behind the stirring 0.5h, add the water of 50 weight parts, stir 20min and get final product.
The frostproofer of present embodiment is carried out performance test, and the result sees table 1.
Claims (4)
1. liquid antifreezerfor concrete; It is characterized in that being processed by the component of following weight part: 10～25 parts of high performance water reducing agent of polyocarboxy acid, 0.1～0.2 part of polyoxyethylene nonylphenol, 1～3 part of Lithium Sulphate, 2～5 parts of organic alcohol amines and water mix for 50～65 parts, and stirring forms.
2. a kind of liquid antifreezerfor concrete as claimed in claim 1 is characterized in that high performance water reducing agent of polyocarboxy acid is for gathering the big monomer ether-toxilic acid of isopentene alcohol methoxyl group-macromolecular grafted polymkeric substance of methylacrylic acid.
3. a kind of liquid antifreezerfor concrete as claimed in claim 2 is characterized in that preparing high performance water reducing agent of polyocarboxy acid, is with producing with deionized water, gathering in isopentene alcohol big monomer ether of methoxyl group and maleic anhydride (three's weight ratio is 0.8: 1: 0.3) the input reaction kettle; Be warming up to 75 ℃, the adding mass concentration is 35% ydrogen peroxide 50, stirs; Said ydrogen peroxide 50 is 0.001: 1 with the weight ratio of gathering the big monomer ether of isopentene alcohol methoxyl group, is warming up to 90 ℃, drips persulfuric acid and receives and initiator solution; Said persulfuric acid is received, initiator, to gather the big monomer ether of isopentene alcohol methoxyl group weight ratio be 0.001: 0.002: 1; Said initiator Thiovanic acid drips and dripped off in 2-3 hour, is incubated 1-2 hour; After being cooled to 50 ℃; Adding mass concentration is 30% sodium hydroxide solution, and solution weight concentration is about 40% to the reaction kettle, makes polycarboxylate water-reducer.
4. a kind of liquid antifreezerfor concrete as claimed in claim 1 is characterized in that said organic alcohol amine is trolamine, diethylolamine or tri-isopropanolamine.The preparation technology of above-mentioned cement concrete frostproofer: with above-mentioned starting material mixing, behind stirring 0.5～1h, add entry according to the design proportioning; Stirring 10-20min gets final product; Polyoxyethylene nonylphenol mainly is the bleed effect, can form a large amount of micro bubbles, reduces the concrete frost heave stress.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101504586A CN102674747A (en) | 2012-05-16 | 2012-05-16 | Liquid concrete anti-freezing agent |
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| CN2012101504586A CN102674747A (en) | 2012-05-16 | 2012-05-16 | Liquid concrete anti-freezing agent |
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| CN102674747A true CN102674747A (en) | 2012-09-19 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992693A (en) * | 2012-11-27 | 2013-03-27 | 常州大学 | Antifreezing material for concrete |
| CN105541174A (en) * | 2016-01-15 | 2016-05-04 | 文登蓝岛建筑工程有限公司 | Antifreezing agent for building and preparation method thereof |
| CN107235652A (en) * | 2017-06-30 | 2017-10-10 | 徐州市耐力高分子科技有限公司 | A kind of concrete antifreezer |
| CN109336505A (en) * | 2018-10-31 | 2019-02-15 | 广西驰胜农业科技有限公司 | One kind is freeze proof to split mortar and preparation method thereof |
| CN110668742A (en) * | 2019-10-23 | 2020-01-10 | 柴瑞龙 | Anti-freezing concrete and preparation method thereof |
| CN113636860A (en) * | 2021-07-27 | 2021-11-12 | 中建西部建设新疆有限公司 | Sprayable type permeable film-forming concrete antifreezing agent and preparation method thereof |
| CN116295592A (en) * | 2023-05-12 | 2023-06-23 | 中国航发沈阳发动机研究所 | Method and system for judging anti-icing working state of aero-engine |
-
2012
- 2012-05-16 CN CN2012101504586A patent/CN102674747A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992693A (en) * | 2012-11-27 | 2013-03-27 | 常州大学 | Antifreezing material for concrete |
| CN105541174A (en) * | 2016-01-15 | 2016-05-04 | 文登蓝岛建筑工程有限公司 | Antifreezing agent for building and preparation method thereof |
| CN107235652A (en) * | 2017-06-30 | 2017-10-10 | 徐州市耐力高分子科技有限公司 | A kind of concrete antifreezer |
| CN109336505A (en) * | 2018-10-31 | 2019-02-15 | 广西驰胜农业科技有限公司 | One kind is freeze proof to split mortar and preparation method thereof |
| CN110668742A (en) * | 2019-10-23 | 2020-01-10 | 柴瑞龙 | Anti-freezing concrete and preparation method thereof |
| CN113636860A (en) * | 2021-07-27 | 2021-11-12 | 中建西部建设新疆有限公司 | Sprayable type permeable film-forming concrete antifreezing agent and preparation method thereof |
| CN113636860B (en) * | 2021-07-27 | 2022-05-20 | 中建西部建设新疆有限公司 | Sprayable penetration film-forming concrete antifreezing agent and preparation method thereof |
| CN116295592A (en) * | 2023-05-12 | 2023-06-23 | 中国航发沈阳发动机研究所 | Method and system for judging anti-icing working state of aero-engine |
| CN116295592B (en) * | 2023-05-12 | 2023-08-22 | 中国航发沈阳发动机研究所 | Method and system for judging anti-icing working state of aero-engine |
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Application publication date: 20120919 |