CN106007455A - Water reducer capable of improving performance of concrete - Google Patents
Water reducer capable of improving performance of concrete Download PDFInfo
- Publication number
- CN106007455A CN106007455A CN201610325862.0A CN201610325862A CN106007455A CN 106007455 A CN106007455 A CN 106007455A CN 201610325862 A CN201610325862 A CN 201610325862A CN 106007455 A CN106007455 A CN 106007455A
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- water reducer
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- organic acid
- concrete
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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
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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)
Abstract
The invention relates to the technical field of concrete admixtures and discloses a water reducer capable of improving performance of concrete. The water reducer is prepared from components in parts by weight as follows: 310-400 parts of methyl allyl polyethenoxy ether, 25-30 parts of acrylic acid, 5-8 parts of an oxidizing agent, 12-16 parts of inorganic base, 0.1-0.6 parts of organic acid and 2.0-2.8 parts of inorganic ammonium salt. The organic acid comprises mercaptoacetic acid, and the inorganic ammonium salt comprises ammonium persulfate. The water reducer prepared in proportion has good adaptability to cement and has the technical effects of delayed coagulation, plasticity maintaining and the like. The water reducer prepared in the proportion has high water-reducing rate and low shrinkage ratio, can improve the waterproof and anti-seepage capacity of the concrete and greatly reduces self-contraction of concrete in the later stage. Adverse factors such as an alkali-aggregate reaction, corrosion of steel bars and the like caused by traditional admixtures and the like can be reduced due to low chloride and low alkali. The water reducer has extremely high affinity and dispersing capacity for cement, fly ash, mineral powder and the like, reduces surface tension of a pore solution and enables the generated concrete to be compact in structure.
Description
Technical field
The present invention relates to technical field of concrete additives, particularly relate to a kind of diminishing improving concrete performance
Agent.
Background technology
After 2000, concrete, as the currently used widest building material material of Building class, has welcome Huang
Golden developing period, along with the unordered exploitation exploitation of the natural resourcess such as sandstone uses, cause natural sand resource complete
Exhaustion, rubble resource is nervous, and market supply product quality is uneven, and raw material unit price remains high.Cause
This, it is considered to the substitution material using natural sand further is the most important thing.For current Machine-made Sand containing mud powder
Amount fluctuation is relatively big, grain shape is uneven, rubble clay content is big, Concrete Industry production capacity surplus, technical controlling
The universal relatively low situation of level, the R&D direction of concrete is defined as high-flow high-performance concrete by us, its
The research and development of the high-performance water reducing agent formula of middle key be orientated environmental protection, Gao Kangni, low grade concrete fluidization,
High-grade concrete high fluidization.
Summary of the invention
The shortcoming that the present invention is directed to prior art, discloses a kind of water reducer improving concrete performance.
In order to solve above-mentioned technical problem, the present invention is addressed by following technical proposals.
A kind of water reducer improving concrete performance, in terms of parts by weight, each component and content is, 310 parts～400
Part methyl allyl polyoxyethylene ether, 25 parts～30 parts of acrylic acid, 5 parts～8 parts of oxidants, 12 parts～16 parts
Inorganic base, 0.1 part～0.6 part of organic acid, 2.0 parts～2.8 parts of inorganic ammonium salts；Organic acid includes TGA,
Inorganic ammonium salt includes Ammonium persulfate..
The structure that the water reducer of proportioning of the present invention utilizes synthetic technology means to change strand is mixed to control concrete
Matching between compound high fluidity and high education resistance, reaches to prepare upper flow regime, without vibration, upper flow regime
The purpose of concrete.
The water reducer of proportioning of the present invention anti-mud, fluidised form, protect the aspect such as plasticity, durability the most excellent
In similar-type products in the market.The water reducer water-reducing rate of proportioning of the present invention is high, shrinkage ratio is low, improves
Concrete water-proof impermeability, greatly reduces later concrete self-constriction.Low chlorine, low alkali reduce tradition
The unfavorable factors such as alkali that additive etc. bring, steel bar corrosion.To cement, flyash and breeze etc.
There is extremely strong affine and dispersibility, decrease the surface tension of pore solution simultaneously, make the concrete of generation
Compact structure.
As preferably, oxidant be hydrogen peroxide, peracetic acid, sodium dichromate, chromic acid, potassium permanganate and
One in Ammonium persulfate..
As preferably, inorganic base is the one of potassium hydroxide, sodium hydroxide, calcium hydroxide.
As preferably, in terms of parts by weight, each component and content is, 310 parts～380 parts of methacrylics gather
Oxygen vinyl Ether, 25 parts～29 parts of acrylic acid, 5 parts～7 parts of oxidants, 12 parts～15 parts of inorganic bases, 0.1 part～0.5
Part organic acid, 2.0 parts～2.9 parts of inorganic ammonium salts；Organic acid includes that TGA, inorganic ammonium salt include persulfuric acid
Ammonium.
As preferably, in terms of parts by weight, each component and content is, 360 parts of methyl allyl polyoxyethylene ethers,
28 parts of acrylic acid, 6 parts of oxidants, 14 parts of inorganic bases, 0.4 part of organic acid, 2.4 parts of inorganic ammonium salts；Organic
Acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
As preferably, in terms of parts by weight, each component and content is, 360 grams of methyl allyl polyoxyethylene ethers,
28 grams of acrylic acid, 6 grams of oxidants, 14 grams of inorganic bases, 0.4 gram of organic acid, 2.4 grams of inorganic ammonium salts；Organic
Acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
As preferably, TGA mass fraction in organic acid is 90%～99%.
As preferably, Ammonium persulfate. mass fraction in inorganic ammonium salt is 95%～99%.
Compared with prior art, the invention have the benefit that the water reducer of proportioning of the present invention anti-mud,
Fluidised form, guarantor's aspect such as plasticity, durability to be substantially better than similar-type products in the market.
The water reducer water-reducing rate of proportioning of the present invention is high, shrinkage ratio is low, improves concrete water-proof impermeability,
Greatly reduce later concrete self-constriction.Low chlorine, low alkali reduce the alkali that tradition additive etc. brings and gather materials
The unfavorable factors such as reaction, steel bar corrosion.Cement, flyash and breeze etc. are had extremely strong affine and dispersion energy
Power, decreases the surface tension of pore solution simultaneously, and the xoncrete structure making generation is fine and close.
Detailed description of the invention
Embodiment 1
A kind of water reducer improving concrete performance, in terms of parts by weight, each component and content is, 310 parts of first
Base allyl polyethenoxy ether, 25 parts of acrylic acid, 5 parts of oxidants, 12 parts of inorganic bases, 0.1 part of organic acid,
2.0 parts of inorganic ammonium salts；Organic acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
Oxidant is hydrogen peroxide.Inorganic base is potassium hydroxide.TGA mass fraction in organic acid
It is 90%.Ammonium persulfate. mass fraction in inorganic ammonium salt is 95%.
Embodiment 2
A kind of water reducer improving concrete performance, in terms of parts by weight, each component and content is, 400 parts of first
Base allyl polyethenoxy ether, 30 parts of acrylic acid, 8 parts of oxidants, 16 parts of inorganic bases, 0.6 part of organic acid,
2.8 parts of inorganic ammonium salts；Organic acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
Oxidant is peracetic acid.Inorganic base is sodium hydroxide.TGA mass fraction in organic acid
It is 99%.Ammonium persulfate. mass fraction in inorganic ammonium salt is 99%.
Embodiment 3
A kind of water reducer improving concrete performance, in terms of parts by weight, each component and content is, 380 parts of first
Base allyl polyethenoxy ether, 29 parts of acrylic acid, 7 parts of oxidants, 15 parts of inorganic bases, 0.5 part of organic acid,
2.9 parts of inorganic ammonium salts；Organic acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
Oxidant is sodium dichromate.Inorganic base is calcium hydroxide.TGA mass fraction in organic acid
It is 95%.Ammonium persulfate. mass fraction in inorganic ammonium salt is 98%.
We have selected on market water reducer generally simultaneously, uses that water-reducing rate index is identical, solid content refers to
Marking identical several water reducers and do the parallel contrast test of concrete, result of the test is shown in Table 1.
The water reducer improving concrete performance and the existing water reducer comparing result of table 1 embodiment 3
As it can be seen from table 1 embodiment 3 improve concrete performance water reducer anti-mud, fluidised form,
Protect the aspect index such as plasticity, durability and to be substantially better than similar-type products in the market.
Being shown by the application in engineering entity structure, the raising concrete water-reducing ratio of embodiment 3 is high, receipts
Shrinkage ratio is low, improves concrete water-proof impermeability, greatly reduces later concrete self-constriction.Low chlorine,
Low alkali reduces the unfavorable factors such as alkali, the steel bar corrosion that tradition additive etc. brings.To cement,
Flyash and breeze etc. have extremely strong affine and dispersibility, decrease the surface tension of pore solution simultaneously,
The xoncrete structure making generation is fine and close.
Embodiment 4
A kind of water reducer improving concrete performance, in terms of parts by weight, each component and content is, 360 parts of first
Base allyl polyethenoxy ether, 28 parts of acrylic acid, 6 parts of oxidants, 14 parts of inorganic bases, 0.4 part of organic acid,
2.4 parts of inorganic ammonium salts；Organic acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
Oxidant is chromic acid.Inorganic base is potassium hydroxide.TGA mass fraction in organic acid is
91%.Ammonium persulfate. mass fraction in inorganic ammonium salt is 96%.
Embodiment 5
A kind of water reducer improving concrete performance, in terms of parts by weight, each component and content is, 360 grams of first
Base allyl polyethenoxy ether, 28 grams of acrylic acid, 6 grams of oxidants, 14 grams of inorganic bases, 0.4 gram of organic acid,
2.4 grams of inorganic ammonium salts；Organic acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
Oxidant is potassium permanganate.Inorganic base is sodium hydroxide.TGA mass fraction in organic acid
It is 98%.Ammonium persulfate. mass fraction in inorganic ammonium salt is 98%.
Embodiment 6
A kind of water reducer improving concrete performance, in terms of parts by weight, each component and content is, 370 parts of first
Base allyl polyethenoxy ether, 28 parts of acrylic acid, 6 parts of oxidants, 15 inorganic bases, 0.5 part of organic acid, 2.5
Part inorganic ammonium salt；Organic acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
Oxidant is Ammonium persulfate..Inorganic base is potassium hydroxide.TGA mass fraction in organic acid
It is 95%.Ammonium persulfate. mass fraction in inorganic ammonium salt is 96%.
In a word, the foregoing is only presently preferred embodiments of the present invention, all made according to scope of the present invention patent
Impartial change with modify, all should belong to the covering scope of patent of the present invention.
Claims (8)
1. the water reducer improving concrete performance, it is characterised in that: in terms of parts by weight, each component and content
For, 310 parts～400 parts of methyl allyl polyoxyethylene ethers, 25 parts～30 parts of acrylic acid, 5 parts～8 parts of oxidations
Agent, 12 parts～16 parts of inorganic bases, 0.1 part～0.6 part of organic acid, 2.0 parts～2.8 parts of inorganic ammonium salts；Organic acid
Including TGA, inorganic ammonium salt includes Ammonium persulfate..
A kind of water reducer improving concrete performance the most according to claim 1, it is characterised in that: oxidant
For the one in hydrogen peroxide, peracetic acid, sodium dichromate, chromic acid, potassium permanganate and Ammonium persulfate..
A kind of water reducer improving concrete performance the most according to claim 1, it is characterised in that: inorganic base
For potassium hydroxide, sodium hydroxide, the one of calcium hydroxide.
A kind of water reducer improving concrete performance the most according to claim 1, it is characterised in that: with weight
Number meter, each component and content is, 310 parts～380 parts of methyl allyl polyoxyethylene ethers, 25 parts～29 parts
Acrylic acid, 5 parts～7 parts of oxidants, 12 parts～15 parts of inorganic bases, 0.1 part～0.5 part of organic acid, 2.0 parts～2.9
Part inorganic ammonium salt；Organic acid includes that TGA, inorganic ammonium salt include Ammonium persulfate..
A kind of water reducer improving concrete performance the most according to claim 1, it is characterised in that: with weight
Number meter, each component and content is, 360 parts of methyl allyl polyoxyethylene ethers, 28 parts of acrylic acid, 6 parts of oxygen
Agent, 14 parts of inorganic bases, 0.4 part of organic acid, 2.4 parts of inorganic ammonium salts；Organic acid includes TGA, nothing
Machine ammonium salt includes Ammonium persulfate..
A kind of water reducer improving concrete performance the most according to claim 1, it is characterised in that: with weight
Number meter, each component and content is, 360 grams of methyl allyl polyoxyethylene ethers, 28 grams of acrylic acid, 6 grams of oxygen
Agent, 14 grams of inorganic bases, 0.4 gram of organic acid, 2.4 grams of inorganic ammonium salts；Organic acid includes TGA, nothing
Machine ammonium salt includes Ammonium persulfate..
A kind of water reducer improving concrete performance the most according to claim 1, it is characterised in that: sulfydryl second
Acid mass fraction in organic acid is 90%～99%.
A kind of water reducer improving concrete performance the most according to claim 1, it is characterised in that: persulfuric acid
Ammonium mass fraction in inorganic ammonium salt is 95%～99%.
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| CN201610325862.0A CN106007455B (en) | 2016-05-17 | 2016-05-17 | A kind of water-reducing agent for improving concrete performance |
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| CN201610325862.0A CN106007455B (en) | 2016-05-17 | 2016-05-17 | A kind of water-reducing agent for improving concrete performance |
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| CN106007455B CN106007455B (en) | 2018-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893049A (en) * | 2017-04-10 | 2017-06-27 | 上海台界化工有限公司 | A kind of polycarboxylic acid builds the synthetic method of additive |
Citations (5)
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| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
| CN101928114A (en) * | 2010-08-30 | 2010-12-29 | 大连建科北方化学有限公司 | High water reduction high collapse protection type polycarboxylate high-performance water reducer and pyrogen-free preparation method thereof |
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Patent Citations (5)
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| CN101538134A (en) * | 2009-04-14 | 2009-09-23 | 大连市建筑科学研究设计院股份有限公司 | Polyether class polycarboxylic acid high-efficiency water reducing agent and preparation method thereof |
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| CN104140503A (en) * | 2014-07-30 | 2014-11-12 | 江西格雷斯科技股份有限公司 | Method for synthesizing high-water-reduction high-slump-retaining high-performance polycarboxylate water reducer at normal temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106893049A (en) * | 2017-04-10 | 2017-06-27 | 上海台界化工有限公司 | A kind of polycarboxylic acid builds the synthetic method of additive |
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| CN106007455B (en) | 2018-05-22 |
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Address after: 315020, Jia Yan Road, Jiangbei District, Zhejiang, Ningbo, 187 Patentee after: Zhejiang Guangtian component group Co., Ltd Address before: 315020, Jia Yan Road, Jiangbei District, Zhejiang, Ningbo, 187 Patentee before: ZHEJIANG GUANGTIAN COMPONENT PART Co.,Ltd. |
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