CN108689632A - A kind of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, preparation method and application - Google Patents
A kind of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, preparation method and application Download PDFInfo
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- CN108689632A CN108689632A CN201810501700.7A CN201810501700A CN108689632A CN 108689632 A CN108689632 A CN 108689632A CN 201810501700 A CN201810501700 A CN 201810501700A CN 108689632 A CN108689632 A CN 108689632A
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- metakaolin
- fluorinated silicone
- organic fluorinated
- water
- concrete
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Classifications
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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
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2103/65—Water proofers or repellants
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, preparation method and applications; the organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent contain the component of following weight percent content; metakaolin 30~50%, alkali soluble resins 3~5%, organic fluorinated silicone hydrophobic components 5~15%, emulsifier 0.1~1.0%, pH adjusting agent 0.5~1.0% and water 30~50%, wherein metakaolin are prepared into the metakaolin powder that glued membrane is protected with alkali solubility;There is alkali solubility to protect the metakaolin powder of glued membrane for mixing in the organic fluorinated silicone oil-in-water emulsion that pH value is neutral, be prepared into organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent.The concrete of this organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent as additive is used, water absorption rate is substantially reduced, the chloride for significantly improving concrete absorbs reduced rate, resisting erosion of sulfate ability, freeze thawing resistance circulation ability, hence it is evident that improves the durability of concrete.
Description
Technical field
The present invention relates to civil engineering technology concrete protection field, especially a kind of organic fluorinated silicone and metakaolin coagulation
Native waterproof reinforcing agent and preparation method thereof.
Technical background
Armored concrete is most commonly used construction material in the world today, and there is tiny capillarys for concrete material
Hole, under harsh corrosive environment, harmful ion is led using water as medium osmosis to inside concrete by physics, chemical action
It causes reinforcing bar and concrete to generate corrosion, eventually leads to structural failure.Wherein chlorion is to make steel by destroying rebar passivation film
Muscle corrosion expands;CO3 2-With Ca (OH)2In conjunction with make concrete pH value reduction;SO4 2-Ion makes to mix by physics, chemical action
Solidifying local products life internal expansion is destroyed.These corrosion factors all be unable to do without the participation of moisture, in addition under northern area freezing-thawing
Concrete destruction is directly with moisture penetration correlation.Therefore, most effective armored concrete anticorrosive measure be exactly prevent moisture into
Enter in concrete.
Concrete internal doping type waterproofing agent is the surface tension by changing concrete capillary hole wall, excellent anti-to obtain
Water effect, currently used waterproofing agent generally have metal soap waterproofing agent, organic silicon waterproofing agent etc..But due to these waterproofing agents
The waterproof effect of itself influences the normal hydrated of cement after being adsorbed on cement particle surface, inevitably results in concrete strength
It reduces.Therefore internal doping type waterproofing agent must increase the component that some improve concrete strengths and reach and not reduce concrete strength even
Improve the purpose of concrete strength.
Fluorine element is the strongest element of electronegativity, it has high oxidation gesture, high ionization energy, just can under extremely low application concentration
The surface tension of aqueous solution is significantly reduced, and surface-active is high.Therefore can farthest be subtracted using fluorine-containing waterproofing agent
The dosage of few waterproofing agent, while reaching best waterproof effect.Organosilicon is a kind of organosilicon compound with unique structure
Object, while having had both inorganic material and the performance of organic material, organo-silicon compound energy and coagulation with special reaction group
Native perfect adaptation.As introduce fluorine element carry out it is organic-silicon-modified obtained from organic fluorinated silicone compound be even more had both the two
All advantages are optimal concrete waterproofers.
Kaolin belongs to layered silicate structure, there is Van der Waals force between layers and is firmly combined with.Kaolin is heated to
At about 600 DEG C, kaolinic layer structure is destroyed, and forms metakaolin, has gelation activity under appropriate shooting condition.It is suitable
When volume, concrete strength can be significantly improved.
However the reactive group of organic fluorinated silicone is easy and SiO2The hydroxyl reaction on surface, thus metakaolin cannot with it is organic
Fluorine silicon directly mixes, and otherwise will seriously affect the shelf-life of product.
Invention content
The first object of the present invention is to provide one kind and containing organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent simultaneously,
Product can be made to stablize easy to use.
The second object of the present invention be to provide it is above-mentioned simultaneously contain organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent
Preparation method.
The third object of the present invention be to provide it is above-mentioned simultaneously contain organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent
Application process.
In order to realize above-mentioned first purpose, present invention employs following technical schemes:A kind of organic fluorinated silicone and metakaolin
Concrete water-proof reinforcing agent, it is characterised in that:Component containing following weight percent content, metakaolin 30~50%, alkali
Soluble resin 3~5%, organic fluorinated silicone hydrophobic components 5~15%, emulsifier 0.1~1.0%, pH adjusting agent 0.5~1.0%
With water 30~50%, wherein the metakaolin is impregnated using the alkali soluble resins so that metakaolin particle surface
One layer of alkali soluble resins film is wrapped up, drying process with atomizing is then used to be prepared into the metakaolin for protecting glued membrane with alkali solubility
Powder;The organic fluorinated silicone hydrophobic components are distributed to by high speed shearing emulsification technique in the aqueous solution of the emulsifier, are prepared
At stable organic fluorinated silicone oil-in-water emulsion;There is alkali solubility to protect for mixing in the organic fluorinated silicone oil-in-water emulsion that pH value is neutral
The metakaolin powder for protecting glued membrane, is prepared into organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent.
The organic fluorinated silicone hydrophobic components are one kind or arbitrary two or more mixed of fluorine-containing organic silicon monomer or polymer
It closes object and is prepared as the neutral oil-in-water emulsion that pH value is 7.0.
The organic fluorinated silicone hydrophobic components are fluorine-containing silicones, fluorine polysiloxanes, one kind in silicon fluoride or two kinds arbitrary
Or two or more mixtures is prepared as the neutral oil-in-water emulsion that pH value is 7.0.
PH adjusting agent is the mixed phosphate of pH=6.86.
The emulsifier is fluorinated surfactant, preferably fluoro polyethylene glycol.
In order to realize above-mentioned second purpose, present invention employs following technical schemes:It is a kind of prepare it is as above any described
The method of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, it includes following steps:
(1) dispensing;
(2) metakaolin is impregnated using alkali soluble resins so that metakaolin particle surface wraps up one layer of alkali solubility
Then resin film uses drying process with atomizing to be prepared into the metakaolin powder for protecting glued membrane with alkali solubility;
(3) organic fluorinated silicone hydrophobic components are distributed to by high speed shearing emulsification technique in the aqueous solution of the emulsifier, system
For at stable organic fluorinated silicone oil-in-water emulsion;
(4) mixing has the metakaolin that alkali solubility protects glued membrane in the organic fluorinated silicone oil-in-water emulsion that pH value is neutral
Powder is prepared into organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent.
In the organic fluorinated silicone oil-in-water emulsion formed in step (3), during pH value is adjusted to using acid or aqueous slkali
Property.
In order to realize above-mentioned third purpose, present invention employs following technical schemes:It is organic described in a kind of as above any
The application process of fluorine silicon and metakaolin concrete water-proof reinforcing agent is the organic fluorinated silicone and metakaolin concrete
Waterproof enhances agent composition, the mixing water of concrete is added at one time in the raw material of concrete and is mixed and stirred.
A kind of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent of the present invention applies emulsifying process insoluble first
In water organic fluorinated silicone material preparation at the oil-in-water emulsion that can be scattered in water with arbitrary proportion, then containing SiO2And it is easy to lead
The metakaolin material for causing organic fluorinated silicone material rotten is wrapped up with alkali soluble resins so that the two can be mixed without anti-
It answers.It is when use that the organic fluorinated silicone and the mixing water of metakaolin concrete water-proof enhancing agent composition and concrete is primary
Property, which is added in the raw material of concrete, is mixed and stirred.Since concrete batching system is in alkalinity, alkali soluble resins can be caused first molten
Solution, releases active metakaolin particle, and metakaolin particle under alkali-activated carbonatite effect there is gelation activity to participate in water
Change reaction.As concrete hydrating solidifies, moisture is consumed, the demulsification of the organic fluorinated silicone material that is emulsified and with the component of concrete
Reaction forms hydrophobic membrane on capillary hole wall, and alkali soluble resins cures blocking pore also with the disappearance of moisture and formed again
Embolism benefit so that concrete integrally have excellent water resistance and intensity does not reduce.
The present invention uses a kind of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, utilizes organic fluorinated silicone hydrophobic material
The characteristic of concrete surface tension can be significantly reduced to obtain best waterproof effect, increased furthermore with metakaolin mixed
The intensity for coagulating soil makes up concrete strength caused by mixing waterproofing agent in and loses, realizes in the premise for not reducing concrete strength
The lower purpose for assigning concrete water-proof effect.
The material of the present invention is prepared as that the slurry of pumping may be used, and the material application emulsifying process is not soluble in water
Organic fluorinated silicone material preparation is at the oil-in-water emulsion that can be scattered in water with arbitrary proportion, then containing SiO2And it is easy to cause organic
The rotten metakaolin material of fluorine silicon materials is wrapped up with alkali soluble resins so that the two can be mixed without reacting.The material
Expect easy to use, wherein solid component is mainly metakaolin, and metakaolin equivalent replaces the cement group in concrete mix
Point;Remaining is liquid component, and liquid component equivalent replaces the water in concrete mix, produces and is disposably counted in Concrete
Amount and incorporation.
The concrete of this organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent as additive, water absorption rate are used
It is substantially reduced, the chloride for significantly improving concrete absorbs reduced rate, resisting erosion of sulfate ability, freeze thawing resistance circulation ability, bright
The aobvious durability for improving concrete.
Description of the drawings
Fig. 1 is the process principle figure of the present invention.
Specific implementation mode
In order to enable those skilled in the art to be further understood that the feature and technology contents of the present invention, please referring to following has
Close detailed description of the invention.
Embodiment 1
Metakaolin 40%;Alkali soluble resins 4%;Organic fluorinated silicone resin 5%;Organic fluoride siloxanes 3%;Organ of luorosilane
2%;Emulsifier 0.4%;PH adjusting agent 0.1%;Water 45.5%:The alkali soluble resins is alkaline soluble acrylic resin, institute
It is fluoro polyethylene glycol to state emulsifier, and pH adjusting agent is the mixed phosphate of pH=6.86.
Concrete water-proof reinforcing agent is prepared according to the following steps:
(1) dispensing;
(2) metakaolin is impregnated using alkali soluble resins so that metakaolin particle surface wraps up one layer of alkali solubility
Then resin film uses drying process with atomizing to be prepared into the metakaolin powder for protecting glued membrane with alkali solubility;
(3) organic fluorinated silicone hydrophobic components are distributed to by high speed shearing emulsification technique in the aqueous solution of the emulsifier, system
For at stable organic fluorinated silicone oil-in-water emulsion;PH value is adjusted to neutrality using the mixed phosphate of pH=6.86;
(4) mixing has the metakaolin that alkali solubility protects glued membrane in the organic fluorinated silicone oil-in-water emulsion that pH value is neutral
Powder is prepared into organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, sample code name FMK1.
Embodiment 2
Metakaolin 50%;Alkali soluble resins 5%;Organic fluorinated silicone resin 3%;Organic fluoride siloxanes 2%;Organ of luorosilane
5%;Emulsifier 0.3%;PH adjusting agent 0.2%;Water 34.5%:The alkali soluble resins is alkaline soluble acrylic resin, institute
It is fluoro polyethylene glycol to state emulsifier, and pH adjusting agent is the mixed phosphate of pH=6.86.
Concrete water-proof reinforcing agent is prepared according to the following steps:
(1) dispensing;
(2) metakaolin is impregnated using alkali soluble resins so that metakaolin particle surface wraps up one layer of alkali solubility
Then resin film uses drying process with atomizing to be prepared into the metakaolin powder for protecting glued membrane with alkali solubility;
(3) organic fluorinated silicone hydrophobic components are distributed to by high speed shearing emulsification technique in the aqueous solution of the emulsifier, system
For at stable organic fluorinated silicone oil-in-water emulsion;PH value is adjusted to neutrality using the mixed phosphate of pH=6.86;
(4) mixing has the metakaolin that alkali solubility protects glued membrane in the organic fluorinated silicone oil-in-water emulsion that pH value is neutral
Powder is prepared into organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, sample code name FMK2.
Embodiment 3
Sample F MK1, FMK2 of embodiment 1,2 gained of embodiment is incorporated into concrete respectively, carries out waterproof, chlorination
Object absorbs reduced rate and examines and be analyzed as follows:
Table 1 tests match ratio
Wherein, C35 is strength grade of concrete, and C35 groups are blank sample, and C35-FMK1 groups or C35-FMK2 groups are to refer to
FMK1 or FMK2 is mixed with into the concrete of C35 strength grades.
2 properties of hardened concrete test result of table
Wherein, C35 is strength grade of concrete, and C35 groups are blank sample, and C35-FMK1 groups or C35-FMK2 groups are to refer to
FMK1 or FMK2 is mixed with into the concrete of C35 strength grades.
It may determine that by concrete performance test result, a kind of organic fluorinated silicone of the present invention and metakaolin concrete water-proof increase
Strong agent can be obviously improved the water resistance of concrete while not reducing concrete strength, can improve the durable of concrete
Property.
But the foregoing is merely the preferable possible embodiments of the present invention, not to limit to the scope of the claims of the present invention, therefore
It is all to change with equivalent structure made by present specification, similarly within the scope of the present invention.
Claims (8)
1. a kind of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent, it is characterised in that:Contain containing following weight percent
The component of amount, metakaolin 30~50%, alkali soluble resins 3~5%, organic fluorinated silicone hydrophobic components 5~15%, emulsifier 0.1
~1.0%, pH adjusting agent 0.5~1.0% and water 30~50%, wherein the metakaolin using the alkali soluble resins into
Row impregnates so that metakaolin particle surface wraps up one layer of alkali soluble resins film, is then prepared into using drying process with atomizing
The metakaolin powder of glued membrane is protected with alkali solubility;The organic fluorinated silicone hydrophobic components are disperseed by high speed shearing emulsification technique
Into the aqueous solution of the emulsifier, it is prepared into stable organic fluorinated silicone oil-in-water emulsion;It is neutral organic fluorinated silicone in pH value
Mixing has the metakaolin powder of alkali solubility protection glued membrane in oil-in-water emulsion, is prepared into organic fluorinated silicone and metakaolin coagulation
Native waterproof reinforcing agent.
2. organic fluorinated silicone according to claim 1 and metakaolin concrete water-proof reinforcing agent, it is characterised in that:It is described to have
Machine F-Si hydrophobic group is divided into one kind of fluorine-containing organic silicon monomer or polymer or arbitrary two or more mixture is prepared as pH value
For 7.0 neutral oil-in-water emulsion.
3. organic fluorinated silicone according to claim 2 and metakaolin concrete water-proof reinforcing agent, it is characterised in that:It is described to have
Machine F-Si hydrophobic group is divided into fluorine silicon resin, fluorine polysiloxanes, one kind in silicon fluoride or two or more arbitrary mixed
It closes object and is prepared as the neutral oil-in-water emulsion that pH value is 7.0.
4. organic fluorinated silicone according to claim 1 and metakaolin concrete water-proof reinforcing agent, it is characterised in that:PH value tune
Save the mixed phosphate that agent is pH=6.86.
5. organic fluorinated silicone according to claim 1 and metakaolin concrete water-proof reinforcing agent, it is characterised in that:The breast
Agent is fluorinated surfactant, preferably fluoro polyethylene glycol.
6. the side of a kind of organic fluorinated silicone prepared as described in Claims 1 to 5 is any and metakaolin concrete water-proof reinforcing agent
Method, it is characterised in that comprise the following steps:
(1) dispensing;
(2) metakaolin is impregnated using alkali soluble resins so that metakaolin particle surface wraps up one layer of alkali soluble resins
Then film uses drying process with atomizing to be prepared into the metakaolin powder for protecting glued membrane with alkali solubility;
(3) organic fluorinated silicone hydrophobic components are distributed to by high speed shearing emulsification technique in the aqueous solution of the emulsifier, are prepared into
Stable organic fluorinated silicone oil-in-water emulsion;
(4) mixing has the metakaolin powder that alkali solubility protects glued membrane in the organic fluorinated silicone oil-in-water emulsion that pH value is neutral
Body is prepared into organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent.
7. the method for organic fluorinated silicone according to claim 6 and metakaolin concrete water-proof reinforcing agent, feature is in step
PH value is adjusted to neutrality by the organic fluorinated silicone oil-in-water emulsion formed in (3) suddenly using acid or aqueous slkali.
8. a kind of application side of organic fluorinated silicone and metakaolin concrete water-proof reinforcing agent as described in Claims 1 to 5 is any
Method, it is characterised in that:The mixing water of the organic fluorinated silicone and metakaolin concrete water-proof enhancing agent composition, concrete
It is added at one time in the raw material of concrete and is mixed and stirred.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810501700.7A CN108689632B (en) | 2018-05-23 | 2018-05-23 | Organic fluorine silicon and metakaolin concrete waterproof reinforcing agent, and preparation method and application thereof |
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| CN201810501700.7A CN108689632B (en) | 2018-05-23 | 2018-05-23 | Organic fluorine silicon and metakaolin concrete waterproof reinforcing agent, and preparation method and application thereof |
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Cited By (5)
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| CN110204278A (en) * | 2019-06-10 | 2019-09-06 | 济南市坤鹏技术开发中心 | A kind of high-strength waterproof concrete building structures |
| CN111499257A (en) * | 2020-04-16 | 2020-08-07 | 武汉东方聚仁防水保温有限公司 | Self-cleaning waterproof anti-fouling material for concrete and preparation process thereof |
| CN113185223A (en) * | 2021-04-29 | 2021-07-30 | 长沙市神宇建材有限公司 | Special nano expansion joint filling mortar for doors and windows and preparation method thereof |
| CN114656190A (en) * | 2022-03-18 | 2022-06-24 | 中交四航工程研究院有限公司 | Fatty acid concrete hydrophobic pore suppository and preparation method thereof |
| CN116836572A (en) * | 2023-04-26 | 2023-10-03 | 长江水利委员会长江科学院 | Composite acid-resistant concrete protective coating material and preparation method and application thereof |
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| CN116836572A (en) * | 2023-04-26 | 2023-10-03 | 长江水利委员会长江科学院 | Composite acid-resistant concrete protective coating material and preparation method and application thereof |
| CN116836572B (en) * | 2023-04-26 | 2024-04-26 | 长江水利委员会长江科学院 | Composite acid-resistant concrete protective coating material and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN108689632B (en) | 2020-12-18 |
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