CN109265062A - A kind of concrete construction compound curing agent and preparation method - Google Patents
A kind of concrete construction compound curing agent and preparation method Download PDFInfo
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- CN109265062A CN109265062A CN201810896196.5A CN201810896196A CN109265062A CN 109265062 A CN109265062 A CN 109265062A CN 201810896196 A CN201810896196 A CN 201810896196A CN 109265062 A CN109265062 A CN 109265062A
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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
Abstract
The invention discloses a kind of compound curing agent of concrete construction, including below according to the raw material of parts by weight: 25-32 parts of polyaluminium sulfate, 17-23 parts of polyether Glycols, 11-14 parts of dimethylolpropionic acid, 22-27 parts of sodium hydroxide, 5-7 parts of calcium superphosphate, 7-11 parts of defoaming agent, 4-6 parts of impervious agent, 1-5 parts of stabilizer, 4-8 parts of promotor.The present invention proposes the method for preparing the compound curing agent of concrete construction as raw material using polyaluminium sulfate and sodium hydroxide, and the concrete that polyether Glycols and dimethylolpropionic acid make addition change curing agent, which is added, has excellent property, resistance to detection property, compression strength high, effectively improves late strength of concrete；The promotor of addition plays facilitation in cement hydration process, is conducive to the stabilization of properties of product and the needs of long-term preservation, so that the curing agent can be widely used for concrete construction.
Description
Technical field
The present invention relates to concrete admixture technology technical field, the compound curing agent of specifically a kind of concrete construction
And preparation method.
Background technique
Concrete refers to by cementitious matter, granular aggregat, water and the chemical admixture and mineral admixture for needing to be added
By mixture made of proper proportion mixing, have many advantages, such as economic, durable, fire resisting, high pressure resistance energy, is that the present age is most important
One of civil engineering material.Concrete admixture is one of indispensable component of modern concrete, referred to as the of concrete
Five components.It is a kind of important method and technology of concrete modifying.The work of fresh concrete can be improved by mixing a small amount of additive
Performance improves the physical and mechanical property and durability of maturing.Meanwhile the research and application of additive promote concrete
Production and construction techniques and new concrete kind development.Concrete admixture is many kinds of, at present there are about more than 300 kinds,
What China had produced has more than 100 kinds, commonly mainly by accelerator, swelling agent, curing agent, water-reducing agent, adjustable solidification agent, air entraining agent,
Corrosion inhibitor etc..
Since in course of hardening, surface layer and internal structure contain the pore being largely intertwined, cause to mix
Solidifying soil is during military service, often because surface quality is bad or compactness not enough reduces its impermeabilisation ability, simultaneously also
It is difficult to keep out the erosion of corrosive deposit in environment, causes the accelerated deterioration of concrete structure performance, reduce concrete structure
Durability and service life.
For defect existing for concrete, the prior art generallys use concrete dense curing agent and comes to concrete structure
It is handled.But existing concrete dense curing agent is unsatisfactory to the improvement of agent on crack resistance of concrete permeability energy.
Summary of the invention
It is above-mentioned to solve the purpose of the present invention is to provide a kind of concrete construction compound curing agent and preparation method
The problem of being proposed in background technique.
To achieve the above object, the invention provides the following technical scheme:
The compound curing agent of a kind of concrete construction, including below according to the raw material of parts by weight: polyaluminium sulfate 25-32
Part, 17-23 parts of polyether Glycols, 11-14 parts of dimethylolpropionic acid, 22-27 parts of sodium hydroxide, 5-7 parts of calcium superphosphate, defoaming agent
7-11 parts, 4-6 parts of impervious agent, 1-5 parts of stabilizer, 4-8 parts of promotor.
As a further solution of the present invention: including below according to the raw material of parts by weight: 27-30 parts of polyaluminium sulfate gathers
18-21 parts of ether dihydric alcohol, 12-14 parts of dimethylolpropionic acid, 24-26 parts of sodium hydroxide, 6-7 parts of calcium superphosphate, defoaming agent 8-10
Part, 4-6 parts of impervious agent, 2-4 parts of stabilizer, 5-7 parts of promotor.
As further scheme of the invention: including below according to the raw material of parts by weight: 29 parts of polyaluminium sulfate, polyethers
19 parts of dihydric alcohol, 25 parts of sodium hydroxide, 6 parts of calcium superphosphate, 9 parts of defoaming agent, 5 parts of impervious agent, is stablized 13 parts of dimethylolpropionic acid
3 parts of agent, 6 parts of promotor.
As further scheme of the invention: the polyaluminium sulfate molecular formula is (Al2(OH)n(SO4)3-n/2〕m, and
Al2O3Content is greater than 20%, wherein m≤11,1≤n≤7.
As further scheme of the invention: defoaming agent is one of organic silicon defoamer and silicon ether defoaming agent.
As further scheme of the invention: impervious agent is one of potassium methyl silicate or sodium methyl silicate.
As further scheme of the invention: stabilizer is ammonia neutralizer, polyacrylamide, Sodium Polyacrylate, poly- third
One of alkene pyrrolidone, POLYPROPYLENE GLYCOL or sodium hydroxide are a variety of.
As further scheme of the invention: promotor is triethanolamine oleate ester, myristic acid triethanolamine ester, the moon
In cinnamic acid triethanolamine ester, triethanolamine, gamma-aminopropyl-triethoxy-silane, sodium bicarbonate, prodan and sodium metaaluminate
It is one or more.
Based on the concrete construction preparation method of compound curing agent, steps are as follows:
1) in parts by weight, by weighed that antibacterial agent, degradation of promoter, filler, crosslinking agent and dispersing agent is equal
It is even to be added in the reaction kettle that thermometer, blender, condenser pipe are housed, and 30-40 parts of water are added, in 50-60 DEG C of stirring 30-
Mixed liquor A is made in 40min,
2) it will be pressed by the weighed polyaluminium sulfate of the parts by weight, polyether Glycols, dimethylolpropionic acid and sodium hydroxide
Ratio simultaneously put into equipped with thermometer, blender, condenser pipe reaction kettle in, be uniformly mixed in a heated condition, and
Heat preservation a period of time, mixed solution B is made；
3) sodium hydroxide is weighed by the parts by weight, and added it in the mixed solution B of step 2), is completely dissolved
Afterwards, continue heat preservation a period of time, then cooled to room temperature, mixed solution C is made；
4) it is added into the mixed solution C of step 3) and presses the weighed calcium superphosphate of the parts by weight, stirring a period of time, i.e.,
Concrete construction can be made with compound curing agent.
As further scheme of the invention: in step 2), the mixing speed is 300-500r/min, heating temperature
90-110 DEG C, soaking time 25-35min.
As further scheme of the invention: in step 3), the soaking time is 50-70min.
As further scheme of the invention: in step 4), the mixing speed is 100-120r/min, mixing time
For 25-35min.
Purposes of the compound curing agent in concrete construction.
Compared with prior art, the beneficial effects of the present invention are:
The present invention proposes to prepare the compound curing agent of concrete construction using polyaluminium sulfate and sodium hydroxide as raw material
Method, and it is added polyether Glycols and concrete that dimethylolpropionic acid makes addition change curing agent has excellent property, resistance to
Detection property, compression strength are strong, effectively improve late strength of concrete；The promotor of addition plays promotion in cement hydration process
Effect, can accelerate hydration reaction, generate more hydrated product in hydration reaction early stage, and dispersing agent viscosity reduction speed is fast, and effect is good,
Each substance can be made evenly dispersed together, played a role conducive to each substance, curing agent liquid phase can be improved in dispersing agent combination stabilizer
Uniformity, prevent from precipitating, be conducive to the stabilization of properties of product and the needs of long-term preservation, so that the curing agent can be widely used for
Concrete construction.
Specific embodiment
Technical solution of the present invention is described in more detail With reference to embodiment.
Embodiment 1
A kind of compound curing agent of concrete construction, including below according to the raw material of parts by weight: 25 parts of polyaluminium sulfate,
17 parts of polyether Glycols, 11 parts of dimethylolpropionic acid, 22 parts of sodium hydroxide, 5 parts of calcium superphosphate, 7 parts of defoaming agent, 4 parts of impervious agent,
1 part of stabilizer, 4 parts of promotor.
As further scheme of the invention: defoaming agent is silicon ether defoaming agent.
As further scheme of the invention: impervious agent is potassium methyl silicate.
As further scheme of the invention: stabilizer is polyacrylamide.
As further scheme of the invention: promotor is laurate triethanolamine ester.
Based on the concrete construction preparation method of compound curing agent, steps are as follows:
1) in parts by weight, by weighed that antibacterial agent, degradation of promoter, filler, crosslinking agent and dispersing agent is equal
It is even to be added in the reaction kettle that thermometer, blender, condenser pipe are housed, and 30 parts of water are added, mixing is made in 50 DEG C of stirring 30min
Liquid A,
2) it will be pressed by the weighed polyaluminium sulfate of the parts by weight, polyether Glycols, dimethylolpropionic acid and sodium hydroxide
Ratio put into simultaneously equipped with thermometer, blender, condenser pipe reaction kettle in, stirring is mixed under the conditions of heating temperature is 90 DEG C
It closes uniformly, mixing speed 300r/min, and keeps the temperature 25min, mixed solution B is made；
3) sodium hydroxide is weighed by the parts by weight, and added it in the mixed solution B of step 2), is completely dissolved
Afterwards, continue to keep the temperature 50min, then cooled to room temperature, mixed solution C is made；
4) it is added into the mixed solution C of step 3) and presses the weighed calcium superphosphate of the parts by weight, stirring, mixing speed is
100r/min, mixing time 25min can be prepared by concrete construction with compound curing agent.
Embodiment 2
A kind of compound curing agent of concrete construction, including below according to the raw material of parts by weight: 32 parts of polyaluminium sulfate,
23 parts of polyether Glycols, 14 parts of dimethylolpropionic acid, 27 parts of sodium hydroxide, 7 parts of calcium superphosphate, 11 parts of defoaming agent, impervious agent 6
Part, 5 parts of stabilizer, 8 parts of promotor.
As further scheme of the invention: defoaming agent is organic silicon defoamer.
As further scheme of the invention: impervious agent is potassium methyl silicate.
As further scheme of the invention: stabilizer is ammonia neutralizer.
As further scheme of the invention: promotor is triethanolamine oleate ester.
Based on the concrete construction preparation method of compound curing agent, steps are as follows:
1) in parts by weight, by weighed that antibacterial agent, degradation of promoter, filler, crosslinking agent and dispersing agent is equal
It is even to be added in the reaction kettle that thermometer, blender, condenser pipe are housed, and 40 parts of water are added, mixing is made in 60 DEG C of stirring 40min
Liquid A,
2) it will be pressed by the weighed polyaluminium sulfate of the parts by weight, polyether Glycols, dimethylolpropionic acid and sodium hydroxide
Ratio simultaneously put into equipped with thermometer, blender, condenser pipe reaction kettle in, heating temperature be 110 DEG C under the conditions of stir
It is uniformly mixed, mixing speed 500r/min, and keeps the temperature 35min, mixed solution B is made；
3) sodium hydroxide is weighed by the parts by weight, and added it in the mixed solution B of step 2), is completely dissolved
Afterwards, continue to keep the temperature 70min, then cooled to room temperature, mixed solution C is made；
4) it is added into the mixed solution C of step 3) and presses the weighed calcium superphosphate of the parts by weight, stirring, mixing speed is
120r/min, mixing time 35min can be prepared by concrete construction with compound curing agent.
Embodiment 3
A kind of compound curing agent of concrete construction, including below according to the raw material of parts by weight: 29 parts of polyaluminium sulfate,
19 parts of polyether Glycols, 13 parts of dimethylolpropionic acid, 25 parts of sodium hydroxide, 6 parts of calcium superphosphate, 9 parts of defoaming agent, 5 parts of impervious agent,
3 parts of stabilizer, 6 parts of promotor.
As further scheme of the invention: defoaming agent is silicon ether defoaming agent.
As further scheme of the invention: impervious agent is potassium methyl silicate.
As further scheme of the invention: stabilizer is polyvinyl pyrilodone.
As further scheme of the invention: promotor is gamma-aminopropyl-triethoxy-silane.
Based on the concrete construction preparation method of compound curing agent, steps are as follows:
1) in parts by weight, by weighed that antibacterial agent, degradation of promoter, filler, crosslinking agent and dispersing agent is equal
It is even to be added in the reaction kettle that thermometer, blender, condenser pipe are housed, and 35 parts of water are added, mixing is made in 55 DEG C of stirring 35min
Liquid A,
2) it will be pressed by the weighed polyaluminium sulfate of the parts by weight, polyether Glycols, dimethylolpropionic acid and sodium hydroxide
Ratio simultaneously put into equipped with thermometer, blender, condenser pipe reaction kettle in, heating temperature be 100 DEG C under the conditions of stir
It is uniformly mixed, mixing speed 400r/min, and keeps the temperature 30min, mixed solution B is made；
3) sodium hydroxide is weighed by the parts by weight, and added it in the mixed solution B of step 2), is completely dissolved
Afterwards, continue to keep the temperature 60min, then cooled to room temperature, mixed solution C is made；
4) it is added into the mixed solution C of step 3) and presses the weighed calcium superphosphate of the parts by weight, stirring, mixing speed is
110r/min, mixing time 30min can be prepared by concrete construction with compound curing agent.
Embodiment 4
A kind of compound curing agent of concrete construction, including below according to the raw material of parts by weight: 27 parts of polyaluminium sulfate,
18 parts of polyether Glycols, 12 parts of dimethylolpropionic acid, 24 parts of sodium hydroxide, 6 parts of calcium superphosphate, 8 parts of defoaming agent, 4 parts of impervious agent,
2 parts of stabilizer, 5 parts of promotor.
As further scheme of the invention: defoaming agent is organic silicon defoamer.
As further scheme of the invention: impervious agent is sodium methyl silicate.
As further scheme of the invention: stabilizer is polyvinyl pyrilodone.
As further scheme of the invention: promotor is prodan.
Based on the concrete construction preparation method of compound curing agent, steps are as follows:
1) in parts by weight, by weighed that antibacterial agent, degradation of promoter, filler, crosslinking agent and dispersing agent is equal
It is even to be added in the reaction kettle that thermometer, blender, condenser pipe are housed, and 34 parts of water are added, mixing is made in 56 DEG C of stirring 35min
Liquid A,
2) it will be pressed by the weighed polyaluminium sulfate of the parts by weight, polyether Glycols, dimethylolpropionic acid and sodium hydroxide
Ratio simultaneously put into equipped with thermometer, blender, condenser pipe reaction kettle in, heating temperature be 100 DEG C under the conditions of stir
It is uniformly mixed, mixing speed 400r/min, and keeps the temperature 30in, mixed solution B is made；
3) sodium hydroxide is weighed by the parts by weight, and added it in the mixed solution B of step 2), is completely dissolved
Afterwards, continue to keep the temperature 60min, then cooled to room temperature, mixed solution C is made；
4) it is added into the mixed solution C of step 3) and presses the weighed calcium superphosphate of the parts by weight, stirring, mixing speed is
110r/min, mixing time 30min can be prepared by concrete construction with compound curing agent.
Embodiment 5
A kind of compound curing agent of concrete construction, including below according to the raw material of parts by weight: 30 parts of polyaluminium sulfate,
21 parts of polyether Glycols, 14 parts of dimethylolpropionic acid, 26 parts of sodium hydroxide, 7 parts of calcium superphosphate, 10 parts of defoaming agent, impervious agent 6
Part, 4 parts of stabilizer, 7 parts of promotor.
As further scheme of the invention: defoaming agent is silicon ether defoaming agent.
As further scheme of the invention: impervious agent is sodium methyl silicate.
As further scheme of the invention: stabilizer is polyacrylamide.
As further scheme of the invention: promotor is sodium metaaluminate.
Based on the concrete construction preparation method of compound curing agent, steps are as follows:
1) in parts by weight, by weighed that antibacterial agent, degradation of promoter, filler, crosslinking agent and dispersing agent is equal
It is even to be added in the reaction kettle that thermometer, blender, condenser pipe are housed, and 35 parts of water are added, mixing is made in 55 DEG C of stirring 35min
Liquid A,
2) it will be pressed by the weighed polyaluminium sulfate of the parts by weight, polyether Glycols, dimethylolpropionic acid and sodium hydroxide
Ratio put into simultaneously equipped with thermometer, blender, condenser pipe reaction kettle in, stirring is mixed under the conditions of heating temperature is 95 DEG C
It closes uniformly, mixing speed 400r/min, and keeps the temperature 35min, mixed solution B is made；
3) sodium hydroxide is weighed by the parts by weight, and added it in the mixed solution B of step 2), is completely dissolved
Afterwards, continue to keep the temperature 65min, then cooled to room temperature, mixed solution C is made；
4) it is added into the mixed solution C of step 3) and presses the weighed calcium superphosphate of the parts by weight, stirring, mixing speed is
115r/min, mixing time 30min can be prepared by concrete construction with compound curing agent.
Comparative example 1
Concrete construction compound curing agent, compared with Example 3, area are prepared according to method same as Example 3
It is not only that, without using polyether Glycols, other are same as Example 3.I.e. in the comparative example, the concrete construction is with compound
Type curing agent, including below according to the raw material of parts by weight: 29 parts of polyaluminium sulfate, 13 parts of dimethylolpropionic acid, sodium hydroxide 25
Part, 6 parts of calcium superphosphate, 9 parts of defoaming agent, 5 parts of impervious agent, 3 parts of stabilizer, 6 parts of promotor.
Comparative example 2
Concrete construction compound curing agent, compared with Example 3, area are prepared according to method same as Example 3
It is not only that, without using dimethylolpropionic acid, other are same as Example 3.I.e. in the comparative example, the concrete construction is with again
Mould assembly curing agent, including below according to the raw material of parts by weight: 29 parts of polyaluminium sulfate, 19 parts of polyether Glycols, sodium hydroxide 25
Part, 6 parts of calcium superphosphate, 9 parts of defoaming agent, 5 parts of impervious agent, 3 parts of stabilizer, 6 parts of promotor.
Comparative example 3
Concrete construction compound curing agent, compared with Example 3, area are prepared according to method same as Example 3
It is not only that, without using polyether Glycols and dimethylolpropionic acid, other are same as Example 3.It is described mixed i.e. in the comparative example
Solidifying soil is constructed compound curing agent, including below according to the raw material of parts by weight: 29 parts of polyaluminium sulfate, 25 parts of sodium hydroxide,
6 parts of calcium superphosphate, 9 parts of defoaming agent, 5 parts of impervious agent, 3 parts of stabilizer, 6 parts of promotor.
Performance test:
The compound curing agent of concrete construction prepared by embodiment 3 and comparative example 1~3 is mixed into concrete in 25 DEG C of items
Maintenance 30d is carried out under part, and measures its curing time and compression strength, test process is detected according to JC474-2008,
The product of detection front and back is tested as follows:
Embodiment 3 and comparative example is respectively adopted, concrete construction is tested for the property with compound curing agent, to test
As a result it is detected, testing result is as follows.
1 testing result table of table
| Group | Curing time (just solidification) | Curing time (final set is solid) | Compression strength (MPa) |
| Embodiment 3 | 2h17min | 5h35min | 44.6 |
| Comparative example 1 | 3h25min | 8h24min | 36.5 |
| Comparative example 2 | 3h54min | 10h13min | 28.3 |
| Comparative example 3 | 4h36min | 13h22min | 23.9 |
From result above as can be seen that table 1 statistics indicate that the embodiment of the present invention 3 use polyether Glycols and dihydroxy first
Base butyric acid has good curing performance, test block initial set after 2h17min, and test block final set after 5h35min, compression strength reaches
44.6MPa；Comparative example does not use polyether Glycols and dimethylolpropionic acid to decline curing performance simultaneously.
The present invention proposes to prepare the compound curing agent of concrete construction using polyaluminium sulfate and sodium hydroxide as raw material
Method, and it is added polyether Glycols and concrete that dimethylolpropionic acid makes addition change curing agent has excellent property, resistance to
Detection property, compression strength are strong, effectively improve late strength of concrete；The promotor of addition plays promotion in cement hydration process
Effect, can accelerate hydration reaction, generate more hydrated product in hydration reaction early stage, and dispersing agent viscosity reduction speed is fast, and effect is good,
Each substance can be made evenly dispersed together, played a role conducive to each substance, curing agent liquid phase can be improved in dispersing agent combination stabilizer
Uniformity, prevent from precipitating, be conducive to the stabilization of properties of product and the needs of long-term preservation, so that the curing agent can be widely used for
Concrete construction.
Better embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (9)
1. a kind of compound curing agent of concrete construction, which is characterized in that including below according to the raw material of parts by weight: polymerised sulphur
Sour aluminium 25-32 parts, 17-23 parts of polyether Glycols, 11-14 parts of dimethylolpropionic acid, 22-27 parts of sodium hydroxide, calcium superphosphate 5-7
Part, 7-11 parts of defoaming agent, 4-6 parts of impervious agent, 1-5 parts of stabilizer, 4-8 parts of promotor.
2. the compound curing agent of concrete construction according to claim 1, which is characterized in that including below according to weight
The raw material of part: 27-30 parts of polyaluminium sulfate, 18-21 parts of polyether Glycols, 12-14 parts of dimethylolpropionic acid, sodium hydroxide 24-
26 parts, 6-7 parts of calcium superphosphate, 8-10 parts of defoaming agent, 4-6 parts of impervious agent, 2-4 parts of stabilizer, 5-7 parts of promotor.
3. the compound curing agent of concrete construction according to claim 2, which is characterized in that including below according to weight
The raw material of part: 29 parts of polyaluminium sulfate, 19 parts of polyether Glycols, 13 parts of dimethylolpropionic acid, 25 parts of sodium hydroxide, calcium superphosphate
6 parts, 9 parts of defoaming agent, 5 parts of impervious agent, 3 parts of stabilizer, 6 parts of promotor.
4. the compound curing agent of concrete construction according to claim 1, which is characterized in that the polyaluminium sulfate point
Minor is (Al2(OH)n(SO4)3-n/2〕m, and Al2O3Content is greater than 20%, wherein m≤11,1≤n≤7.
5. the compound curing agent of concrete construction according to claim 1, which is characterized in that the defoaming agent is organic
One of silicon defoaming agent and silicon ether defoaming agent；The impervious agent is one of potassium methyl silicate or sodium methyl silicate；It is described
Stabilizer is in ammonia neutralizer, polyacrylamide, Sodium Polyacrylate, polyvinyl pyrilodone, POLYPROPYLENE GLYCOL or sodium hydroxide
It is one or more.
6. the compound curing agent of concrete construction according to claim 1, which is characterized in that the promotor is oleic acid
Triethanolamine ester, myristic acid triethanolamine ester, laurate triethanolamine ester, triethanolamine, gamma-aminopropyl-triethoxy silicon
One of alkane, sodium bicarbonate, prodan and sodium metaaluminate are a variety of.
7. a kind of preparation method based on the compound curing agent of concrete construction as described in claim 1-6 is any, special
Sign is that steps are as follows:
1) in parts by weight, antibacterial agent, degradation of promoter, filler, crosslinking agent and dispersing agent are uniformly added by weighed
Enter to be equipped in the reaction kettle of thermometer, blender, condenser pipe, and 30-40 parts of water are added, in 50-60 DEG C of stirring 30-40min system
Obtain mixed liquor A；
It 2) will be by the weighed polyaluminium sulfate of the parts by weight, polyether Glycols, dimethylolpropionic acid and sodium hydroxide in proportion
Simultaneously put into equipped with thermometer, blender, condenser pipe reaction kettle in, be uniformly mixed in a heated condition, and keep the temperature
For a period of time, mixed solution B is made；
3) sodium hydroxide is weighed by the parts by weight, and added it in the mixed solution B of step 2, after being completely dissolved, after
Continuation of insurance temperature a period of time, then cooled to room temperature, mixed solution C is made；
4) it is added into the mixed solution C of step 3) and presses the weighed calcium superphosphate of the parts by weight, stirring a period of time, can made
Obtain the compound curing agent of concrete construction.
8. preparation method according to claim 7, which is characterized in that in step 2, the mixing speed is 300-500r/
Min, 90-110 DEG C of heating temperature, soaking time 25-35min；In step 3), the soaking time is 50-70min；Step 4)
In, the mixing speed is 100-120r/min, mixing time 25-35min.
9. purposes of the compound curing agent as described in claim 1-6 is any in concrete construction.
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| CN111575010A (en) * | 2020-04-10 | 2020-08-25 | 陕西省交通建设集团公司 | Soil curing agent capable of improving drying shrinkage performance of reinforced soil and preparation method thereof |
| CN113185184A (en) * | 2021-04-28 | 2021-07-30 | 龙岩市景棋混凝土有限公司 | Concrete curing agent and construction process thereof |
| CN113652239A (en) * | 2021-08-10 | 2021-11-16 | 中建三局第二建设工程有限责任公司 | Special curing agent for tropical desert soil and use method thereof |
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Application publication date: 20190125 |