CN106365495A - Additive special for steam curing of precast concrete member and preparation method and application thereof - Google Patents
Additive special for steam curing of precast concrete member and preparation method and application thereof Download PDFInfo
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- CN106365495A CN106365495A CN201610773917.4A CN201610773917A CN106365495A CN 106365495 A CN106365495 A CN 106365495A CN 201610773917 A CN201610773917 A CN 201610773917A CN 106365495 A CN106365495 A CN 106365495A
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- deionized water
- steam curing
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
Abstract
The invention particularly relates to an additive special for steam curing of a precast concrete member. The additive is characterized by being prepared from additive mother liquid, coconut oil sodium sulfate, triethanolamine and water, wherein the ratio of the additive mother liquid to the coconut oil sodium sulfate to the triethanolamine to the water is (20-30) to (0.5-0.8) to (0.3-0.3) to (70-80). By optimizing an additive formula and a process, the strength and other mechanical properties after the additive is injected into the concrete member are improved.
Description
Technical field
The present invention relates to concrete field, particularly to concrete prefabricated element steam curing special additive and its preparation
Methods and applications.
Background technology
The work progress of reinforced concrete buildingses generallys include concrete raw material and prepares and steel bar meter, template system
Make and support, steel reinforcement cage positioning, concreting and the link such as form removal and maintenance.Here each link can have influence on work
The quality of Cheng Jianshe, efficiency and cost performance, two of which link is relevant with template.Template is amount in xoncrete structure construction
Important construction tool wide greatly.Economically see, form work engineering accounts for the 20%～30% of reinforced concrete work expense, use
The 30%～40% of work amount, the 50% about of the duration；From construction technology and construction quality, many high, difficult and big architectural engineerings
It is concentrated mainly on concrete works, and in concrete works, major technique concentrates in form work engineering, mould plate technique problem again
Solve, construction quality just improves, therefore template construction quality directly affects the quality of concrete works.In order to improve building
The manufacture efficiency of thing and the quality standardization of building, increasing enterprise increases the research and development to building concrete member,
Accelerate by scale prefabricated components to produce, realize standardization, and be broadly divided into currently in apparatus for concrete member curing
Steaming process, natural curing method, healthy liquid method etc., especially steamed concrete component its can strictly control the temperature of concrete
Degree, it is to avoid the moisture evaporation on its surface, but it is specially steam-cured special outer not to be specifically designed for concrete component at this stage
Plus agent improves the properties of concrete by steam curing.
Content of the invention
In view of the foregoing, it is an object to provide concrete prefabricated element steam curing special additive.
Concrete prefabricated element steam curing special additive, it is characterised in that being made up of following raw material, is respectively as follows: outer
Plus agent mother solution, cocoanut oil alcohol sodium sulfate, triethanolamine and water, wherein each constituent mass is than for additive mother solution: cocoanut oil alcohol sulfur
Sour sodium: triethanolamine: water=(20 ~ 30): (0.5 ~ 0.8): (0.3 ~ 0.6): (70 ~ 80).
In above-mentioned concrete prefabricated element steam curing special additive, described additive mother solution, cocoanut oil alcohol sodium sulfate, three
The mass ratio of ethylol amine and water is 25:0.6:0.4:74.9.Wherein, cocoanut oil alcohol sodium sulfate and trihydroxyethyl amine blends are made
For air entraining agent, it is favorably improved concrete flowability, strengthen its frost-proof test, increase the service life.
In above-mentioned concrete prefabricated element steam curing special additive, described additive mother solution, its component includes methyl
Allyl acid polyoxyethylene ether, isoprene polyoxyethylenated alcohol, a solution, b solution, c solution, each component is methyl in mass ratio
Allyl acid polyoxyethylene ether, isoprene polyoxyethylenated alcohol, oxidant, a solution, b solution, c solution=(30 ~ 50): (20 ~
40): (16 ~ 24): (6 ~ 12): (6 ~ 12): (0.3 ~ 0.9)；Wherein a solution is prepared by acrylic acid, maleic anhydride and deionized water
Form, b solution is formulated by reducing agent and deionized water, c solution is formulated by chain-transferring agent and deionized water, and a is molten
The mass ratio of each component of liquid is acrylic acid: maleic anhydride: deionized water=(15 ~ 25): (12 ~ 20): (50 ~ 70), b solution each group
The mass ratio dividing is reducing agent: deionized water=(1.5 ~ 2.5): (85 ~ 95), and the mass ratio of each component of c solution is chain-transferring agent:
Deionized water=(1.5 ~ 2.5): (85 ~ 95).Wherein, methallyl acid polyoxyethylene ether, isoprene alcohol polyoxy are adopted in mother solution
Both vinyl Ether mixture, as the raw material of water reducer, enhances the density of concrete, and guarantees that concrete has stream enough
Degeneration, is easy to concreting.And diluted by deionized water in the reducing agent after being diluted by deionized water in b solution and c solution
Chain-transferring agent afterwards
In above-mentioned concrete prefabricated element steam curing special additive, described chain-transferring agent is mercaptopropionic acid, TGA, secondary
The one or two kinds of of sodium phosphite and methylpropene sodium sulfonate or three kinds or four kinds mixing.
In above-mentioned concrete prefabricated element steam curing special additive, described oxidant is 30% hydrogen peroxide solution, described
Reducing agent is rongalite.
The preparation method of above-mentioned concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 200g methallyl acid polyoxyethylene ether, 150g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding 3g
Oxidant stirs 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g reducing agent, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds oxidant stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, after being added dropwise to complete
Insulation 60min；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) concrete prefabricated element steam curing special additive mother solution, cocoanut oil alcohol sodium sulfate, triethanolamine and deionization
Water just forms concrete prefabricated element steam curing special additive finished product according to recipe ratio mixing.
In the preparation method of above-mentioned concrete prefabricated element steam curing special additive, a, b, c solution in step (3)
Time for adding control respectively in 180min, 210min, 210min.
The application of above-mentioned concrete prefabricated element steam curing special additive, consumption in concrete for the described additive
Account for and mix the 1.5 ~ 2.5% of total Binder Materials quality.
Beneficial effects of the present invention are
This invention is directed to concrete prefabricated element steam curing special additive and improves, in deionized water medium, with methyl
Chain based on allyl acid polyoxyethylene ether and isoprene polyoxyethylenated alcohol, with a solution as side chain, introduces b solution and c solution is made
For reducing agent, chain-transferring agent, then using 30% hydrogen peroxide solution as oxidant, obtain high-performance water reducing agent.Simultaneously with as drawing
The additive that the cocoanut oil alcohol sodium sulfate of gas agent and triethanolamine are mixed, using the teaching of the invention it is possible to provide the mobility of concrete, slows down mixed
The initial and final setting time of solidifying soil, facilitates transport and the discharging of concrete, enhances later stage concrete durability simultaneously
And comprcssive strength.
Specific embodiment
Concrete prefabricated element steam curing special additive of the present invention and its preparation method and application embodiment is done into
One step explanation.
Concrete prefabricated element steam curing special additive is made up of following raw material, is respectively as follows: additive mother solution, cocos nucifera oil
Alcohol sodium sulfate, triethanolamine and water, wherein each constituent mass is than for additive mother solution: cocoanut oil alcohol sodium sulfate: trihydroxyethyl
Amine: water=(20 ~ 30): (0.5 ~ 0.8): (0.3 ~ 0.6): (70 ~ 80).
The optimal proportion of wherein above-mentioned concrete prefabricated element steam curing special additive is described additive mother solution, coconut palm
The mass ratio of oleyl alcohol sodium sulfate, triethanolamine and water is 25:0.6:0.4:74.9.And cocoanut oil alcohol sodium sulfate and three hydroxyl second
Base amine blends, as air entraining agent, are favorably improved concrete flowability, strengthen its frost-proof test, increase the service life.
In above-mentioned concrete prefabricated element steam curing special additive, described additive mother solution, its component includes first
Base allyl acid polyoxyethylene ether, isoprene polyoxyethylenated alcohol, a solution, b solution, c solution, each component is first in mass ratio
Base allyl acid polyoxyethylene ether, isoprene polyoxyethylenated alcohol, oxidant, a solution, b solution, c solution=(30 ~ 50): (20 ~
40): (16 ~ 24): (6 ~ 12): (6 ~ 12): (0.3 ~ 0.9)；Wherein a solution is prepared by acrylic acid, maleic anhydride and deionized water
Form, b solution is formulated by reducing agent and deionized water, c solution is formulated by chain-transferring agent and deionized water, and a is molten
The mass ratio of each component of liquid is acrylic acid: maleic anhydride: deionized water=(15 ~ 25): (12 ~ 20): (50 ~ 70), b solution each group
The mass ratio dividing is reducing agent: deionized water=(1.5 ~ 2.5): (85 ~ 95), and the mass ratio of each component of c solution is chain-transferring agent:
Deionized water=(1.5 ~ 2.5): (85 ~ 95).Wherein, methallyl acid polyoxyethylene ether, isoprene alcohol polyoxy are adopted in mother solution
Both vinyl Ether mixture, as the raw material of water reducer, enhances the density of concrete, and guarantees that concrete has stream enough
Degeneration, is easy to concreting.And diluted by deionized water in the reducing agent after being diluted by deionized water in b solution and c solution
Chain-transferring agent afterwards
In above-mentioned concrete prefabricated element steam curing special additive, described chain-transferring agent be mercaptopropionic acid, TGA,
The one or two kinds of of sodium hypophosphite and methylpropene sodium sulfonate or three kinds or four kinds mixing.
In above-mentioned concrete prefabricated element steam curing special additive, described oxidant is 30% hydrogen peroxide solution, institute
Stating reducing agent is rongalite.
The preparation method of above-mentioned concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 200g methallyl acid polyoxyethylene ether, 150g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding 3g
Oxidant stirs 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g reducing agent, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds oxidant stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, after being added dropwise to complete
Insulation 60min；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) concrete prefabricated element steam curing special additive mother solution, cocoanut oil alcohol sodium sulfate, triethanolamine and deionization
Water just forms concrete prefabricated element steam curing special additive finished product according to recipe ratio mixing.
In the preparation method of above-mentioned concrete prefabricated element steam curing special additive, a, b, c solution in step (3)
Time for adding control respectively in 180min, 210min, 210min.
The application of above-mentioned concrete prefabricated element steam curing special additive, consumption in concrete for the described additive
Account for and mix the 1.5 ~ 2.5% of total Binder Materials quality.
Embodiment 1
Using the preparation method of concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 200g methallyl acid polyoxyethylene ether, 150g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding
3g30% hydrogen peroxide solution stirs 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g sulfhydryl reducing agent guanidine-acetic acid, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds 30% hydrogen peroxide solution stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, and a,
The time for adding of b, c solution controls respectively in 180min, 210min, 210min, and is incubated 60min after being added dropwise to complete；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) by concrete prefabricated element steam curing special additive mother solution 250g, cocoanut oil alcohol sodium sulfate 0.6g, triethanolamine
0.4g and deionized water 749g mixing just forms concrete prefabricated element steam curing special additive finished product.
Embodiment 2
Using the preparation method of concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 200g methallyl acid polyoxyethylene ether, 150g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding
3g30% hydrogen peroxide solution stirs 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g sulfhydryl reducing agent guanidine-acetic acid, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds 30% hydrogen peroxide solution stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, and a,
The time for adding of b, c solution controls respectively in 100min, 110min, 110min, and is incubated 60min after being added dropwise to complete；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) by concrete prefabricated element steam curing special additive mother solution 250g, cocoanut oil alcohol sodium sulfate 0.6g, triethanolamine
0.4g and deionized water 749g mixing just forms concrete prefabricated element steam curing special additive finished product.
Embodiment 3
Using the preparation method of concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 250g methallyl acid polyoxyethylene ether, 100g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding
3g30% hydrogen peroxide solution stirs 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g mercaptopropionic acid, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds 30% hydrogen peroxide solution stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, and a,
The time for adding of b, c solution controls respectively in 100min, 110min, 110min, and is incubated 60min after being added dropwise to complete；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) by concrete prefabricated element steam curing special additive mother solution 250g, cocoanut oil alcohol sodium sulfate 0.6g, triethanolamine
0.4g and deionized water 749g mixing just forms concrete prefabricated element steam curing special additive finished product.
Embodiment 4
Using the preparation method of concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 250g methallyl acid polyoxyethylene ether, 100g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding
3g30% hydrogen peroxide solution stirs 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g mercaptopropionic acid, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds 30% hydrogen peroxide solution stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, and a,
The time for adding of b, c solution controls respectively in 100min, 110min, 110min, and is incubated 60min after being added dropwise to complete；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) by concrete prefabricated element steam curing special additive mother solution 250g, cocoanut oil alcohol sodium sulfate 1g and deionized water
749g mixing just forms concrete prefabricated element steam curing special additive finished product.
Comparative example 1
Using the preparation method of concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 350g methallyl acid polyoxyethylene ether stirring 10min, be subsequently adding 3g30% hydrogen peroxide solution stirring 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g reducing agent, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds 30% hydrogen peroxide solution stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, and a,
The time for adding of b, c solution controls respectively in 180min, 210min, 210min, and is incubated 60min after being added dropwise to complete；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) by concrete prefabricated element steam curing special additive mother solution 250g, cocoanut oil alcohol sodium sulfate 0.6g, triethanolamine
0.4g and deionized water 749g mixing just forms concrete prefabricated element steam curing special additive finished product.
Comparative example 2
Using the preparation method of concrete prefabricated element steam curing special additive, its preparation process is as follows:
(1) choose the 1000ml ware mouth beaker carrying thermometer and having agitator, in beaker, add 300g deionized water, then
It is separately added into 350g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding 3g30% hydrogen peroxide solution stirring 10min；
(2) prepare a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution
It is formulated by 1g reducing agent, 45g deionized water；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
(3) after step (1) adds 30% hydrogen peroxide solution stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, and a,
The time for adding of b, c solution controls respectively in 180min, 210min, 210min, and is incubated 60min after being added dropwise to complete；
(4) and then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water in beaker
The solid content being adjusted to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
(5) by concrete prefabricated element steam curing special additive mother solution 250g, cocoanut oil alcohol sodium sulfate 0.6g, triethanolamine
0.4g and deionized water 749g mixing just forms concrete prefabricated element steam curing special additive finished product.
Above-mentioned enforcement 1-4 and comparative example 1-2 preparation additive according to mix total Binder Materials quality 1.5% add to
In the concrete of c25, maintenance records this concrete properties and is as follows: after 28 days
Finally it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, although
With reference to the foregoing embodiments the present invention is described in detail, for a person skilled in the art, it still can be right
Technical scheme described in foregoing embodiments is modified, or wherein some technical characteristics are carried out with equivalent, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement made etc., should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. concrete prefabricated element steam curing special additive, it is characterised in that being made up of following raw material, is respectively as follows: additional
Agent mother solution, cocoanut oil alcohol sodium sulfate, triethanolamine and water, wherein each constituent mass is than for additive mother solution: cocoanut oil alcohol sulphuric acid
Sodium: triethanolamine: water=(20 ~ 30): (0.5 ~ 0.8): (0.3 ~ 0.6): (70 ~ 80).
2. concrete prefabricated element steam curing special additive according to claim 1 is it is characterised in that described additional
Agent mother solution, the mass ratio of cocoanut oil alcohol sodium sulfate, triethanolamine and water are 25:0.6:0.4:74.9.
3. concrete prefabricated element steam curing special additive according to claim 1 is it is characterised in that described additional
Agent mother solution, its component includes methallyl acid polyoxyethylene ether, isoprene polyoxyethylenated alcohol, a solution, b solution, c solution,
Each component in mass ratio be methallyl acid polyoxyethylene ether, isoprene polyoxyethylenated alcohol, oxidant, a solution, b solution,
C solution=(30 ~ 50): (20 ~ 40): (16 ~ 24): (6 ~ 12): (6 ~ 12): (0.3 ~ 0.9)；Wherein a solution is by acrylic acid, Malaysia
Anhydride and deionized water are formulated, and b solution is formulated by reducing agent and deionized water, c solution by chain-transferring agent and go from
Sub- water is formulated, and the mass ratio of each component of a solution is acrylic acid: maleic anhydride: deionized water=(15 ~ 25): (12 ~ 20):
(50 ~ 70), the mass ratio of each component of b solution is reducing agent: deionized water=(1.5 ~ 2.5): (85 ~ 95), each component of c solution
Mass ratio is chain-transferring agent: deionized water=(1.5 ~ 2.5): (85 ~ 95).
4. concrete prefabricated element steam curing special additive according to claim 3 is it is characterised in that described chain turns
Shifting agent is mercaptopropionic acid, the one or two kinds of of TGA, sodium hypophosphite and methylpropene sodium sulfonate or three kinds or
Four kinds of mixing.
5. concrete prefabricated element steam curing special additive according to claim 3 is it is characterised in that described oxidation
Agent is 30% hydrogen peroxide solution, and described reducing agent is rongalite.
6. the preparation method of the concrete prefabricated element steam curing special additive described in a kind of claim 1 or 3 or 4 or 5,
It is characterized in that, its preparation process is as follows:
Choose with thermometer and have the 1000ml ware mouth beaker of agitator, add 300g deionized water in beaker, then divide
Not Jia Ru 200g methallyl acid polyoxyethylene ether, 150g isoprene polyoxyethylenated alcohol stirring 10min, be subsequently adding 3g oxygen
Agent stirs 10min；
Preparation a, b solution, wherein a solution is formulated by 20g acrylic acid, 15g maleic anhydride, 45g deionized water, b solution by
1g reducing agent, 45g deionized water are formulated；C solution is formulated by 1g chain-transferring agent, 45g deionized water；
After step (1) adds oxidant stirring 10min, a, b, c solution is simultaneously added dropwise using peristaltic pump, is incubated after being added dropwise to complete
60min；
Then adding 30% sodium hydroxide solution to adjust ph value in beaker is 6.5 to 7, then adds deionized water to adjust in beaker
Solid content to solution is 40%, just forms concrete prefabricated element steam curing special additive mother solution after stirring 30min；
Concrete prefabricated element steam curing special additive mother solution, cocoanut oil alcohol sodium sulfate, triethanolamine and deionized water
Just form concrete prefabricated element steam curing special additive finished product according to recipe ratio mixing.
7. according to a kind of claim 6 concrete prefabricated element steam curing special additive it is characterised in that in step (3)
The time for adding of middle a, b, c solution controls respectively in 180min, 210min, 210min.
8. the application of the concrete prefabricated element steam curing special additive described in a kind of any one according to claim 1 to 5,
It is characterized in that, consumption in concrete for the described additive accounts for mixes the 1.3 ~ 2.5% of total Binder Materials quality.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059696A (en) * | 2017-12-22 | 2018-05-22 | 上海东大化学有限公司 | A kind of environment-friendly type concrete curing agent and preparation method thereof |
| CN110845173A (en) * | 2018-08-21 | 2020-02-28 | 江苏省建工建材质量检测中心有限公司 | Method for accelerating static maintenance of concrete product |
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