CN102557515B - Anti-freezing agent for concretes - Google Patents
Anti-freezing agent for concretes Download PDFInfo
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- CN102557515B CN102557515B CN2012100614983A CN201210061498A CN102557515B CN 102557515 B CN102557515 B CN 102557515B CN 2012100614983 A CN2012100614983 A CN 2012100614983A CN 201210061498 A CN201210061498 A CN 201210061498A CN 102557515 B CN102557515 B CN 102557515B
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Abstract
The invention relates to an anti-freezing agent for concretes and belongs to the technical field of anti-freezing agents. The anti-freezing agent for the concretes is characterized by comprising the following components in parts by weight: 10-20 parts of polycarboxylic acid water reducing agent, 5-15 parts of polycarboxylic acid slump retaining agent, 5-10 parts of calcium nitrate, 5-10 parts of calcium carbonate, 1-2 parts of air entraining agent and 1-2 parts of defoaming agent. The anti-freezing agent for the concretes is good in cement adaptability, stable in quality, environmentally-friendly, convenient to use, reliable in process, convenient in operation, high in production efficiency, convenient in industrialized production and the like, the prepared concretes are good in working performance and are maintained not to be frozen at minus 20DEG C.
Description
Technical field
The invention belongs to the frostproofer technical field, particularly relate to a kind of anti-freezing agent for concretes.
Background technology
At present, construction,, for preventing concrete generation freeze injury, mainly take two kinds of safeguard procedures in the winter time, and the one, adopt to cover or go along with sb. to guard him temperature-rising method and prevent that concrete temperature is down to below 0 ℃, this method cost is high, operating process is complicated; The 2nd, admixture frostproofer in concrete, the method construction is simple, and effect is also better, therefore is being widely applied.The frostproofer that uses in existing construction work is all with the diminishing combination, then composite high-early strength component, antifreezing component and bleed component are formulated.Wherein the diminishing component comprises naphthalenesulfonate formaldehyde condensation compound (naphthalene series high-efficiency water-reducing agent), sulfonated melamine compound condenses, sulfonated lignin; Early stage component comprises vitriol, carbonate, nitrate etc., and wherein majority is sodium salt; Nitrite, nitrate, villaumite, urea and ammoniacal liquor etc. are arranged in antifreezing component.Villaumite can be to steel bar corrosion, and work-ing life is built in impact; Urea, ammoniacal liquor etc. discharge irritating smell, affect quality of life, and nitrite has carcinogenesis, and easily causes the concrete alkali aggregate reaction, the bad phenomenon such as the accumulation of salt in the surface soil, and the impact building is used and visual appearance.Existing frostproofer, also exist quality unstable in the concrete use procedure, affect the technical problems such as the various construction works of concrete.
Summary of the invention
The problem that the present invention exists for solving prior art, provide a kind of anti-freezing agent for concretes.
The present invention seeks to carry the arch a kind of have cement adaptability good, steady quality, the product environmental protection, easy to use, process, easy to operate, production efficiency is high, be convenient to suitability for industrialized production, can adapt to the anti-freezing agent for concretes of the characteristics such as various requirement of engineering, can keep concrete not freeze under-20 ℃.
Anti-freezing agent for concretes of the present invention adopts following technical scheme:
A kind of anti-freezing agent for concretes is characterized in: the weight part of each component of frostproofer is,
Anti-freezing agent for concretes of the present invention can also adopt following technical measures:
Described anti-freezing agent for concretes is characterized in: the weight part of each component of anti-freezing agent for concretes forms:
Described anti-freezing agent for concretes is characterized in: polycarboxylate water-reducer consists of following component, and the weight part of each component is:
Described anti-freezing agent for concretes is characterized in: polycarboxylic acid slump retaining agent consists of following component, and the weight part of each component is:
Wherein, the preparation of polycarboxylate water-reducer comprises that the following technique step is poly-,
(1) add allyl ethers in reactor, control temperature 50-70 ℃, make allyl ethers water-soluble under agitation condition, with vinylformic acid, regulate the ph value to 4-6;
(2) ammonium persulphate is divided into 3 parts, first adds 1 part, stirs 10-20 minute, and ammonium persulphate is fully dissolved, and then per hour adds 1 part;
(3) remaining vinylformic acid and mercapto acid, rust inhibitor Sodium Nitrite were joined in reaction vessel with 3-5 hour;
(4) reaction insulation 1-2 hour;
(5) regulate the ph value to 6-7 with sodium hydroxide, thin up, obtain the reinforcement of concrete polycarboxylate water-reducer.
Wherein, the preparation of polycarboxylic acid slump retaining agent for concrete comprises that the following technique step is poly-:
(1) after polyethenoxy ether and water are added reaction vessel, under agitation condition, control 60-80 ℃ of temperature and make polyethenoxy ether water-soluble;
(2) after hydrogen peroxide is added reaction vessel, stir hydrogen peroxide is dissolved;
(3) after the acid of remaining vinylformic acid, mercapto, xitix is soluble in water, with 3-5 hour, be added drop-wise in reaction vessel;
(4) reaction insulation 1-2 hour;
(5) regulate the ph value to 6-7 with sodium hydroxide, thin up, obtain polycarboxylic acid slump retaining agent for concrete.
The advantage that the present invention has and positively effect:
Anti-freezing agent for concretes of the present invention, owing to adopting the brand-new technical scheme of the present invention, therefore, the present invention is good to cement adaptability, steady quality, product environmental protection, easy to use, process, easy to operate, production efficiency is high, be convenient to the advantages such as suitability for industrialized production, do not discharge any waste water, waste gas in production process, belong to the environment friendly green product, the concrete work performance that mixes is good, can keep concrete not freeze under-20 ℃.
Embodiment
, for further understanding technology contents of the present invention, Characteristic, hereby enumerate following instance, and be described in detail as follows:
Embodiment 1
A kind of anti-freezing agent for concretes, the weight part of each component be,
In above-mentioned composition, the weight part of each component of polycarboxylate water-reducer is:
In above-mentioned composition, the weight part of each component of polycarboxylic acid slump retaining agent is:
Claims (2)
1. anti-freezing agent for concretes is characterized in that: the weight part of each component of anti-freezing agent for concretes forms:
Wherein, polycarboxylate water-reducer consists of following component, and the weight part of each component is:
Polycarboxylic acid slump retaining agent consists of following component, and the weight part of each component is:
2. anti-freezing agent for concretes according to claim 1 is characterized in that: the weight part of each component of anti-freezing agent for concretes forms:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100614983A CN102557515B (en) | 2012-03-09 | 2012-03-09 | Anti-freezing agent for concretes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100614983A CN102557515B (en) | 2012-03-09 | 2012-03-09 | Anti-freezing agent for concretes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102557515A CN102557515A (en) | 2012-07-11 |
| CN102557515B true CN102557515B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100614983A Active CN102557515B (en) | 2012-03-09 | 2012-03-09 | Anti-freezing agent for concretes |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352835B (en) * | 2017-07-15 | 2020-01-10 | 大同恒安混凝土外加剂有限公司 | High-performance antifreezing agent and preparation method thereof |
| CN109704614B (en) * | 2019-01-11 | 2021-07-09 | 深鹏环保工程有限公司 | Anti-freezing and thawing additive for muck blocks and preparation method thereof |
| CN109592925B (en) * | 2019-01-11 | 2021-09-07 | 深鹏环保工程有限公司 | Anti-freezing and thawing additive for construction waste wallboard and preparation method thereof |
| CN109776017A (en) * | 2019-02-15 | 2019-05-21 | 山东鲁班建设集团总公司 | A kind of composite concrete antifreeze and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555110A (en) * | 2009-05-11 | 2009-10-14 | 江苏鼎达建材有限公司 | Concrete antifreezer and preparation method thereof |
| CN101781101A (en) * | 2009-01-16 | 2010-07-21 | 上海华联建筑外加剂厂有限公司 | High-performance polycarboxylate based polyether water reducing agent |
| JP2010229015A (en) * | 2009-03-06 | 2010-10-14 | Nippon Shokubai Co Ltd | Shrinkage-reducing agent for hydraulic material |
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2012
- 2012-03-09 CN CN2012100614983A patent/CN102557515B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781101A (en) * | 2009-01-16 | 2010-07-21 | 上海华联建筑外加剂厂有限公司 | High-performance polycarboxylate based polyether water reducing agent |
| JP2010229015A (en) * | 2009-03-06 | 2010-10-14 | Nippon Shokubai Co Ltd | Shrinkage-reducing agent for hydraulic material |
| CN101555110A (en) * | 2009-05-11 | 2009-10-14 | 江苏鼎达建材有限公司 | Concrete antifreezer and preparation method thereof |
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| CN102557515A (en) | 2012-07-11 |
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Effective date of registration: 20180305 Address after: 300162 Tianjin Dongli District Dongli Lake Wanke city education complex science and technology building 202-1 room Patentee after: Tianjin Shiji Tianyuan Group Co., Ltd. Address before: 300300 Xinli street, Dongli District, Tianjin City, three villages Patentee before: Tianjin Nuode Building Materials Co., Ltd. |
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