CN109485296A - Type microcapsules chloride ion curing agent and its preparation method and application is moved in a kind of swelling resistance - Google Patents
Type microcapsules chloride ion curing agent and its preparation method and application is moved in a kind of swelling resistance Download PDFInfo
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- CN109485296A CN109485296A CN201811337834.6A CN201811337834A CN109485296A CN 109485296 A CN109485296 A CN 109485296A CN 201811337834 A CN201811337834 A CN 201811337834A CN 109485296 A CN109485296 A CN 109485296A
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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
- 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
- C04B2103/60—Agents for protection against chemical, physical or biological attack
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Abstract
The present invention provides a kind of swelling resistance and moves type microcapsules chloride ion curing agent and its preparation method and application, and type microcapsules chloride ion curing agent is moved in swelling resistance, by weight, including 50~80 parts of A capsules and 10 parts of B capsules；By weight, the A capsule is prepared by 100~110 parts of stearic acid, 10~20 parts of sodium alginates；By weight, the B capsule is prepared by 100~110 parts of stearic acid and 5~10 parts of Extend position powder.Swelling resistance of the invention moves that type microcapsules chloride ion curing agent moves substance sodium alginate to resistance as cyst wall material using stearic acid and Extend position powder coats, on the one hand, swelling resistance of the invention can be made to move type microcapsules chloride ion curing agent to be stabilized in cement concrete slurry, setting time and the working performance of cement concrete are not influenced, on the other hand, effectively free chloride ion can be hindered to migrate in concrete hole solution, to improve concrete to the anti-migration ability of free chloride ion.
Description
Technical field
The present invention relates to curing agent technology field, in particular to a kind of swelling resistance move type microcapsules chloride ion curing agent and its
Preparation method and application.
Background technique
In the process of construction of ocean, the marine resources such as sea sand and coral sand are of increasing concern.However, these marine resources
In chloride ion can spread and migrate in concrete, and be very likely to damage rebar surface passivating film, lead to reinforcing bar
Corrosion.In addition, in external environment, such as marine environment or deicing salt environment, chloride ion can be migrated from outside to coagulation
Native internal corrosion reinforcing bar.In this case, the iron rust that steel bar corrosion generates will generate volume expansion, weaken reinforcing bar and concrete
Binding force, cause the durability of reinforced concrete structure to reduce, generate weight huge economic loss.
Typically for the solution route of the harm of inside concrete free chloride ion corroded steel reinforcement, predominantly using stainless
Steel, Epoxy Rebar and corrosion inhibitor.But there are respective defects for these types of method, such as: stainless steel is expensive；Epoxy Rebar with
Bond stress is lower between cement, and epoxy coating is easy to be damaged during transportation, there is the risk of spot corrosion；Corrosion inhibitor is in bar list
Face forms protective film, prevents chloride ion from contacting reinforcing bar, and still, free chloride ion concentration is still higher, therefore in passivating film weakness
Region, reinforcing bar still face the risk of corrosion, and therefore, improving concrete is effectively to prevent it to the anti-migration ability of free chloride ion
To reinforcement in concrete cause corrosion important means, but the relevant technologies it is studied it is less.
Summary of the invention
In view of this, the present invention is directed to propose type microcapsules chloride ion curing agent is moved in a kind of swelling resistance, to solve existing mix
The low problem of solidifying soil resisting chloride ion penetration transfer ability.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
Type microcapsules chloride ion curing agent is moved in a kind of swelling resistance, by weight, including 50~80 parts of A capsules and 10 parts of B
Capsule；By weight, the A capsule is prepared by 100~110 parts of stearic acid, 10~20 parts of sodium alginates；By weight
Meter, the B capsule are prepared by 100~110 parts of stearic acid and 5~10 parts of Extend position powder.
Compared with the existing technology, swelling resistance of the present invention is moved type microcapsules chloride ion curing agent and is had the advantage that
1, swelling of the invention resistance moves type microcapsules chloride ion curing agent and moves object to resistance as cyst wall material using stearic acid
Matter sodium alginate and Extend position powder are coated, on the one hand, swelling resistance of the invention can be made to move type microcapsules chloride ion solid
Agent is stabilized in cement concrete slurry, does not influence setting time and the working performance of cement concrete, on the other hand,
With the progress of hydrated cementitious, the stearic acid cyst wall that swelling resistance is moved in type microcapsules chloride ion curing agent is destroyed, and releases resistance
Substance sodium alginate, Extend position powder are moved, effectively free chloride ion is hindered to migrate in concrete hole solution, to improve mixed
The solidifying native anti-migration ability to free chloride ion, and then harm of the free chloride ion to reinforcing bar in cement concrete is reduced, extend
The service life of reinforced concrete structure.
2, swelling of the invention resistance is moved type microcapsules chloride ion curing agent and is used as certainly using organic/inorganic composite material system
Agent is moved by chloride ion resistance, swelling behavior is good, and the calcium ion of Extend position can supplement and draw since sodium alginate absorbs calcium ion
The decline of calcium ion concentration in the solution risen reduces swelling resistance of the invention and moves type microcapsules chloride ion curing agent to hydrated cementitious
The influence of reaction.
The second object of the present invention is to propose a kind of side for preparing above-mentioned swelling resistance and moving type microcapsules chloride ion curing agent
Method, to solve the problems, such as that existing concrete resisting chloride ion penetration transfer ability is low.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A method of it preparing above-mentioned swelling resistance and moves type microcapsules chloride ion curing agent, comprising the following steps:
1) stearic acid is heated and is melted, then, sodium alginate is added into the stearic acid of fusing, stirred, obtain melting molten
Liquid A；
2) the melt solution A is added in cooling water, then, filtering obtains initial A capsule；
3) the initial A capsule is dried in vacuo, then, is crushed, grinding, obtains A capsule；
4) stearic acid is heated and is melted, then, Extend position powder is added into the stearic acid of fusing, stirring is melted
Melt solution B；
5) the melt solution B is added in cooling water, then, filtering obtains initial B capsule；
6) the initial B capsule is dried in vacuo, then, is crushed, grinding, obtains B capsule；
7) the A capsule and the B capsule are mixed and moves type microcapsules chloride ion curing agent to get swelling resistance.
Optionally, heating fusing described in the heating temperature and the step 4) of fusing is heated described in the step 1)
Heating temperature is 55~65 DEG C.
Optionally, the temperature of cooling water described in the temperature of cooling water described in the step 2) and the step 5) is
2~5 DEG C.
Optionally, vacuum drying described in vacuum drying drying time described in the step 3) and the step 6)
Drying time is 20~for 24 hours；
Optionally, vacuum drying described in vacuum drying drying temperature described in the step 3) and the step 6)
Drying temperature is 20~30 DEG C.
Optionally, the fineness of B capsule described in A capsule described in the step 3) and the step 6) is 1.5mm sieve
To tail over be 0.
Optionally, the method for Extend position powder described in the step 4) is prepared, comprising the following steps:
By average grain diameter be 40 μm agstone temperature lower calcination 6~8 hours of 1000~1100 DEG C, it is then, cold
But, it grinds, obtains Extend position powder.
Optionally, the fineness of the Extend position powder be 80 μm sieve tail over less than 15%.
Compared with the existing technology, the preparation method that type microcapsules chloride ion curing agent is moved in swelling resistance of the present invention has
Following advantage:
1, swelling resistance of the invention moves the preparation method of type microcapsules chloride ion curing agent by will be as cyst wall material
Stearic acid fusing, then sodium alginate and Extend position powder are respectively coated by stearic acid, obtain A capsule and B capsule, so
Afterwards, then by A capsule and B capsule it mixes, swelling resistance is made and moves type microcapsules chloride ion curing agent, whole preparation process is simple, instead
Mild condition is answered, it is easy to industrialized production.
2, type is moved in the swelling resistance that the preparation method preparation of type microcapsules chloride ion curing agent is moved using swelling resistance of the invention
Microcapsules chloride ion curing agent can be stabilized in cement concrete slurry, not influence setting time and the work of cement concrete
Make performance, and resisting chloride ion penetration transfer ability with higher, advantageously reduces free chloride ion to reinforcing bar in cement concrete
Harm, extends the service life of reinforced concrete structure.
The third object of the present invention is to propose that above-mentioned swelling resistance moves type microcapsules chloride ion curing agent in concrete
Using to solve the problems, such as that existing concrete resisting chloride ion penetration transfer ability is low.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
Application of the type microcapsules chloride ion curing agent in concrete is moved in above-mentioned swelling resistance, and type microcapsules are moved in the swelling resistance
The volume of chloride ion curing agent is 2~4% of binder total amount in the concrete.
Compared with the existing technology, type microcapsules chloride ion curing agent answering in concrete is moved in swelling resistance of the present invention
With having the advantage that
Above-mentioned swelling resistance is moved type microcapsules chloride ion curing agent applied in concrete by the present invention, can effectively hinder freedom
Chloride ion migrates in concrete, and then improves the reinforcing bar resistant to rust ability of made concrete, to be conducive to extend concrete
Structure service life, have huge economic benefit and social benefit.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Below in conjunction with embodiment, the present invention will be described in detail.
Chloride ion solidifies as a kind of novel approach for solving the problems, such as free chloride ion corrosion reinforcing bar in armored concrete,
Its cardinal principle is that in-situ solidifying and dynamic resistance are moved, wherein in-situ solidifying is primarily referred to as utilizing hydrolysis product of cement, such as C-S-H
Gel, hydrated calcium aluminate sulfate etc. convert non-free chloride ion for chloride ion by way of physical absorption or chemical bonding,
And dynamic hinders to move and refer to, by promoting the resisting chloride ion penetration transfer ability of concrete, free chloride ion is hindered during dynamic
Migration.Type microcapsules chloride ion curing agent is moved in swelling resistance of the invention, is moved according to the dynamic resistance in chloride ion curing technology
The creative work that principle carries out.
Embodiment 1
Type microcapsules chloride ion curing agent is moved in a kind of swelling resistance, by weight, including 50~80 parts of A capsules and 10 parts of B
Capsule；By weight, A capsule is prepared by 100~110 parts of stearic acid, 10~20 parts of sodium alginates；By weight, B
Capsule is prepared by 100~110 parts of stearic acid and 5~10 parts of Extend position powder.Wherein, the molecular formula of sodium alginate is
(C6H7O6Na)n, molecular weight 222, stearic molecular formula is C18H36O2。
The swelling resistance of the present embodiment moves type microcapsules chloride ion curing agent and moves ingredient, a side using sodium alginate as main resistance
Face, the excessive moisture after caning absorb cement concrete hardening, prevents free chloride ion from passing through the hole solution in cement concrete
On the other hand fast transferring forms gel after absorbing moisture, carry out interior maintenance to cement concrete, refine cement concrete
Hole, further enhance cement concrete hinder free chloride ion migration ability.The micro- glue of type is moved in the swelling resistance of the present embodiment
Capsule chloride ion curing agent moves ingredient using Extend position powder as secondary resistance, on the one hand, its reaction rate is slower, can continue to mend
Calcium ion is filled, a large amount of calcium ions of sodium alginate complexing are made up, the present embodiment swelling resistance is reduced and moves the solidification of type microcapsules chloride ion
Influence of the agent to hydrated reaction of cement, on the other hand, Extend position and water reaction, volume increase, and the migration for blocking chloride ion is logical
Road further enhances the ability that cement concrete hinders free chloride ion migration.Because sodium alginate and Extend position are directly added into
It will affect the working performance of cement slurry into cement slurry, therefore, type microcapsules chloride ion is moved in the swelling resistance of the present embodiment
Curing agent moves substance sodium alginate to resistance as cyst wall material using stearic acid and Extend position coats, because stearic acid is in water
The slurry body stage can be stabilized, and not influence the working performance of cement slurry, and in the hydrated cementitious later period, due to alkali in cement
The erosion of property environment, the stearic acid as cyst wall material are gradually corroded, and substance sodium alginate and burning are moved in the resistance as capsule-core
Lime is exposed in the pore solution of hardening of cement body, reduces extra moisture and to coagulating cement in cement concrete hole solution
The pore structure of soil is improved, and the two collective effect makes the swelling resistance of the present embodiment move one side of type microcapsules chloride ion curing agent
Face resisting chloride ion penetration transfer ability with higher, on the other hand can reduce its influence to cement slurry working performance.
A method of it preparing above-mentioned swelling resistance and moves type microcapsules chloride ion curing agent, comprising the following steps:
1) stearic acid is heated and is melted, then, sodium alginate is added into the stearic acid of fusing, stirred, obtain melting molten
Liquid A；
2) melt solution A is added in cooling water, then, filtering obtains initial A capsule；
3) initial A capsule is dried in vacuo, then, is crushed, grinding, obtains A capsule；
4) stearic acid is heated and is melted, then, Extend position powder is added into the stearic acid of fusing, stirring is melted
Melt solution B；
5) melt solution B is added in cooling water, then, filtering obtains initial B capsule；
6) initial B capsule is dried in vacuo, then, is crushed, grinding, obtains B capsule；
7) A capsule and B capsule are mixed and moves type microcapsules chloride ion curing agent to get swelling resistance.
The preparation method that type microcapsules chloride ion curing agent is moved in the swelling resistance of the present embodiment passes through will be as cyst wall material
Stearic acid fusing, then sodium alginate and Extend position powder are respectively coated by stearic acid, obtain A capsule and B capsule, so
Afterwards, then by A capsule and B capsule it mixes, swelling resistance is made and moves type microcapsules chloride ion curing agent, whole preparation process is simple, instead
Mild condition is answered, it is easy to industrialized production.The preparation side of type microcapsules chloride ion curing agent is moved using the swelling resistance of the present embodiment
Type microcapsules chloride ion curing agent is moved in the swelling resistance of method preparation to be stabilized in cement concrete slurry, and it is mixed not influence cement
Setting time and the working performance of soil, and resisting chloride ion penetration transfer ability with higher are coagulated, free chloride ion pair is advantageously reduced
The harm of reinforcing bar in cement concrete, extends the service life of reinforced concrete structure.
In the present embodiment, Extend position powder is self-control in step 4), is made especially by following steps:
By average grain diameter be 40 μm agstone temperature lower calcination 6~8 hours of 1000~1100 DEG C, it is then, cold
But, it is ground to tailing over less than 15% for 80 μm of sieves, obtains Extend position powder.
The preparation process of the present embodiment Extend position powder is simple, and reaction condition is loose, and Extend position powder obtained
Degree of purity is high, can be effectively improved the pore structure of cement concrete, improve the resisting chloride ion penetration transfer ability of cement concrete.
In addition, in the present embodiment, in order to enable stearic acid sufficiently to melt, to sodium alginate and Extend position powder
It is sufficiently wrapped up, the heating temperature of heating fusing is 55~65 in the heating temperature and step 4) of heating fusing in step 1)
℃.And in the present embodiment, in order to which established microcapsules are precipitated, while established microcapsules are not destroyed, in step 2)
The temperature of cooling water is 2~5 DEG C in the temperature and step 5) of cooling water.
Meanwhile in the present embodiment, type microcapsules chloride ion curing agent is moved in order to obtain pure swelling resistance, and made
Type microcapsules chloride ion curing agent is moved in made swelling resistance can be good at being dispersed in cement concrete slurry, so that made swelling
Type microcapsules chloride ion curing agent is moved in resistance can effectively hinder the migration of free chloride ion in cement concrete, and then improve cement
The resisting chloride ion penetration transfer ability of concrete, when vacuum drying dry in vacuum drying drying time and step 6) in step 3)
Between be 20~for 24 hours；In step 3) in vacuum drying drying temperature and step 6) vacuum drying drying temperature be 20~
30℃；It is 0 that the fineness of B capsule, which is tailing over for 1.5mm sieve, in A capsule and step 6) in step 3).
Embodiment 2
Type microcapsules chloride ion curing agent is moved in a kind of swelling resistance, is made especially by following steps:
1) 100 parts of stearic acid by weight, are heated to 55 DEG C of fusings, then, 5 parts are added into the stearic acid of fusing
Sodium alginate stirs evenly, and obtains melt solution A；
2) melt solution A is added drop-wise in the cooling water that temperature is 2 DEG C, then, filtering obtains initial A capsule；
3) initial A capsule is dried in vacuo 20h in 20 DEG C of vacuum oven, then, is crushed, is ground to particle whole
It is sieved by 1.5mm, obtains A capsule；
4) 100 parts of stearic acid by weight, are heated to 55 DEG C of fusings, then, 5 parts are added into the stearic acid of fusing
The Extend position powder of 80 μm of sieves tailed over less than 15%, stirs evenly, obtains melt solution B；
5) melt solution B is added drop-wise in the cooling water that temperature is 2 DEG C, then, filtering obtains initial B capsule；
6) initial B capsule is dried in vacuo 20h in 20 DEG C of vacuum oven, then, is crushed, is ground to particle whole
It is sieved by 1.5mm, obtains B capsule；
7) by weight, by 50 parts of A capsules and 10 parts of B capsules be uniformly mixed to get swelling resistance move type microcapsules chlorine from
Sub- curing agent.
In the present embodiment, Extend position powder is made especially by following steps:
By average grain diameter be 40 μm agstone temperature lower calcination 6~8 hours of 1000~1100 DEG C, it is then, cold
But, it is ground to tailing over less than 15% for 80 μm of sieves, obtains Extend position powder.
Embodiment 3
Type microcapsules chloride ion curing agent is moved in a kind of swelling resistance, is made especially by following steps:
1) 110 parts of stearic acid by weight, are heated to 65 DEG C of fusings, then, are added 10 into the stearic acid of fusing
Part sodium alginate, stirs evenly, obtains melt solution A；
2) melt solution A is added drop-wise in the cooling water that temperature is 5 DEG C, then, filtering obtains initial A capsule；
3) initial A capsule is dried in vacuo for 24 hours in 30 DEG C of vacuum oven, then, is crushed, is ground to particle whole
It is sieved by 1.5mm, obtains A capsule；
4) 110 parts of stearic acid by weight, are heated to 65 DEG C of fusings, then, are added 10 into the stearic acid of fusing
The Extend position powder of 80 μm of sieves of part tailed over less than 15%, stir evenly, obtain melt solution B；
5) melt solution B is added drop-wise in the cooling water that temperature is 5 DEG C, then, filtering obtains initial B capsule；
6) initial B capsule is dried in vacuo for 24 hours in 30 DEG C of vacuum oven, then, is crushed, is ground to particle whole
It is sieved by 1.5mm, obtains B capsule；
7) by weight, by 80 parts of A capsules and 10 parts of B capsules be uniformly mixed to get swelling resistance move type microcapsules chlorine from
Sub- curing agent.
In the present embodiment, Extend position powder is made especially by following steps:
By average grain diameter be 40 μm agstone temperature lower calcination 6~8 hours of 1000~1100 DEG C, it is then, cold
But, it is ground to tailing over less than 15% for 80 μm of sieves, obtains Extend position powder.
Type microcapsules chloride ion curing agent is moved in the swelling resistance of embodiment 2 and embodiment 3 to be applied in concrete, and foundation
Water conservancy industry standard SL352-2006 " concrete for hydraulic structure testing regulations " tests its chloride ion curing degree, and test result is such as
Shown in table 2, wherein the match ratio of made concrete is as shown in table 1, and type microcapsules chlorine is moved in the swelling resistance of embodiment 2 and embodiment 3
The volume of cationic cure agent is respectively 4% and 2% of binder total amount in concrete, wherein cementitious material includes cement, powder
The swelling resistance of coal ash, i.e. embodiment 2 and embodiment 3 is moved type microcapsules chloride ion curing agent and is added by the way of mixing cementitious material outside
Enter into concrete.Experimentation selects source of the sodium chloride as chloride ion, is directly dissolved in mixing water and coagulation is added
In soil, the content for controlling chloride ion is the 0.12% of chiltern amount.Chloride ion curing degree R can be calculated according to following formula:
R=(Ct-Cf)/Ct× 100%
In formula, CtFor total chloridion content in concrete, can be calculated according to the sodium chloride quality of addition；CfFor
Water-soluble free chloride ion content in concrete, by measuring.
Table 1
Table 2
As shown in Table 2, relative to comparative example, type microcapsules chloride ion is moved using the swelling resistance of the present embodiment 2 and embodiment 3
Curing agent chloride ion curing degree with higher, chloride ion transport coefficient are greatly reduced, wherein using the molten of embodiment 3
It is swollen to hinder the 28d chloride ion curing degree for moving the concrete of type microcapsules chloride ion curing agent up to 52%, 90d up to 56.5%,
28d chloride ion transport coefficient, which reduces by 68.9%, 90d chloride ion transport coefficient, reduces by 78.6%, illustrates the present embodiment 2 and embodiment
Type microcapsules chloride ion curing agent concrete chloride ion curing efficiency with higher and resisting chloride ion penetration migration energy are moved in 3 swelling resistance
Power.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. type microcapsules chloride ion curing agent is moved in a kind of swelling resistance, which is characterized in that by weight, including 50~80 parts of A glue
Capsule and 10 parts of B capsules；By weight, the A capsule by 100~110 parts of stearic acid, the preparation of 10~20 parts of sodium alginates and
At；By weight, the B capsule is prepared by 100~110 parts of stearic acid and 5~10 parts of Extend position powder.
2. a kind of method for preparing swelling resistance described in claim 1 and moving type microcapsules chloride ion curing agent, which is characterized in that packet
Include following steps:
1) stearic acid is heated and is melted, then, sodium alginate is added into the stearic acid of fusing, stirred, obtain melt solution A；
2) the melt solution A is added in cooling water, then, filtering obtains initial A capsule；
3) the initial A capsule is dried in vacuo, then, is crushed, grinding, obtains A capsule；
4) stearic acid is heated and is melted, then, Extend position powder is added into the stearic acid of fusing, stirring obtains melting molten
Liquid B；
5) the melt solution B is added in cooling water, then, filtering obtains initial B capsule；
6) the initial B capsule is dried in vacuo, then, is crushed, grinding, obtains B capsule；
7) the A capsule and the B capsule are mixed and moves type microcapsules chloride ion curing agent to get swelling resistance.
3. the preparation method that type microcapsules chloride ion curing agent is moved in swelling resistance according to claim 2, which is characterized in that institute
State heated described in the heating temperature for heating fusing described in step 1) and the step 4) heating temperature of fusing be 55~
65℃。
4. the preparation method that type microcapsules chloride ion curing agent is moved in swelling resistance according to claim 2, which is characterized in that institute
The temperature for stating cooling water described in the temperature and the step 5) of cooling water described in step 2) is 2~5 DEG C.
5. the preparation method that type microcapsules chloride ion curing agent is moved in swelling resistance according to claim 2, which is characterized in that institute
State vacuum drying drying time described in vacuum drying drying time described in step 3) and the step 6) be 20~
24h。
6. the preparation method that type microcapsules chloride ion curing agent is moved in swelling resistance according to claim 2, which is characterized in that institute
State vacuum drying drying temperature described in vacuum drying drying temperature described in step 3) and the step 6) be 20~
30℃。
7. the preparation method that type microcapsules chloride ion curing agent is moved in swelling resistance according to claim 2, which is characterized in that institute
It is 0 that the fineness for stating B capsule described in A capsule described in step 3) and the step 6), which is tailing over for 1.5mm sieve,.
8. the preparation method that type microcapsules chloride ion curing agent is moved in swelling resistance according to claim 2, which is characterized in that system
The method of Extend position powder described in the standby step 4), comprising the following steps:
By average grain diameter be 40 μm agstone temperature lower calcination 6~8 hours of 1000~1100 DEG C, it is then, cooling, grind
Mill, obtains Extend position powder.
9. the preparation method of type microcapsules chloride ion curing agent is moved in the swelling resistance according to claim 2 or 8, feature exists
It is that 80 μm of sieves are tailed over less than 15% in the fineness of, the Extend position powder.
10. application of the type microcapsules chloride ion curing agent in concrete is moved in swelling resistance described in claim 1, feature exists
In the volume that type microcapsules chloride ion curing agent is moved in the swelling resistance is 2~4% of binder total amount in the concrete.
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| CN110316990A (en) * | 2019-06-14 | 2019-10-11 | 武汉理工大学 | Calcium aluminum-based layered double-hydroxide chloride ion curing agent and its preparation method and application |
| CN112707663A (en) * | 2021-01-30 | 2021-04-27 | 北京工业大学 | Preparation method of red mud core-shell structure fine aggregate |
| CN114276044A (en) * | 2020-09-27 | 2022-04-05 | 武汉理工大学 | Synergistic coating swelling migration-resistant microcapsule chloride ion curing agent and preparation method and application thereof |
| CN114455878A (en) * | 2022-01-28 | 2022-05-10 | 武汉理工大学 | High-dispersity slow-release calcium-aluminum-based chloride ion curing agent and preparation method thereof |
| CN115259731A (en) * | 2022-08-17 | 2022-11-01 | 博特新材料泰州有限公司 | Slow-release long-acting air entraining material and preparation method and application thereof |
| CN115304304A (en) * | 2022-08-17 | 2022-11-08 | 博特新材料泰州有限公司 | Slow-release defoaming material and preparation method and application thereof |
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| CN110316990A (en) * | 2019-06-14 | 2019-10-11 | 武汉理工大学 | Calcium aluminum-based layered double-hydroxide chloride ion curing agent and its preparation method and application |
| CN114276044A (en) * | 2020-09-27 | 2022-04-05 | 武汉理工大学 | Synergistic coating swelling migration-resistant microcapsule chloride ion curing agent and preparation method and application thereof |
| CN112707663A (en) * | 2021-01-30 | 2021-04-27 | 北京工业大学 | Preparation method of red mud core-shell structure fine aggregate |
| CN114455878A (en) * | 2022-01-28 | 2022-05-10 | 武汉理工大学 | High-dispersity slow-release calcium-aluminum-based chloride ion curing agent and preparation method thereof |
| CN114455878B (en) * | 2022-01-28 | 2022-09-09 | 武汉理工大学 | High-dispersity slow-release calcium-aluminum-based chloride ion curing agent and preparation method thereof |
| CN115259731A (en) * | 2022-08-17 | 2022-11-01 | 博特新材料泰州有限公司 | Slow-release long-acting air entraining material and preparation method and application thereof |
| CN115304304A (en) * | 2022-08-17 | 2022-11-08 | 博特新材料泰州有限公司 | Slow-release defoaming material and preparation method and application thereof |
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| CN109485296B (en) | 2021-06-08 |
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