CN109180044A - A kind of polystyrene microcapsules self-repair concrete structure and preparation method thereof - Google Patents
A kind of polystyrene microcapsules self-repair concrete structure and preparation method thereof Download PDFInfo
- Publication number
- CN109180044A CN109180044A CN201811175226.XA CN201811175226A CN109180044A CN 109180044 A CN109180044 A CN 109180044A CN 201811175226 A CN201811175226 A CN 201811175226A CN 109180044 A CN109180044 A CN 109180044A
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- China
- Prior art keywords
- polystyrene
- microcapsules
- concrete
- repairs
- parts
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1033—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
Abstract
The invention discloses a kind of polystyrene microcapsules self-repair concrete structure, including concrete component, uniformly incorporation is provided with polystyrene and repairs microcapsules, PVA fiber in the concrete component.The core materials that the polystyrene repairs microcapsules are anhydrous sodium metasilicate, and cyst material is polystyrene.The present invention also provides a kind of production methods of polystyrene microcapsules self-repair concrete.The present invention can improve the crack resistance of concrete structure, and it is made to have ability of the damage from perception and selfreparing, to improve the safety of the structure of concrete, durability and economy.
Description
Technical field
The present invention relates to a kind of polystyrene microcapsules self-repair concrete structures and preparation method thereof, including concrete structure
Part belongs to self-repair concrete and its similar the field of building materials.
Background technique
Concrete has the characteristics that tensile property much smaller than compressive property, inevitably generates split in use
Seam, these cracks provide the channel into inside concrete for extraneous harmful substance, and then accelerate the corrosion of internal reinforcing bar,
Reduce safety and the durability of concrete structure.For distress in concrete, traditional method is to carry out the artificial reparation in later period,
The reparation in later period is carried out using the methods of structure reinforcing method, grouting method, completion method.Traditional method for repairing and mending is a kind of quilt in fact
Dynamic remedies, and when waiting macroscopic larger width crack to occur, structure has had already appeared a degree of damage, if splitting
Seam discovery or repair not in time, may Damage Structure safety, increase accident occur a possibility that.Prior one
Point is that conventional fracture repairing means cost is very high, expends a large amount of manpower and material resources.Concrete self-repair technology emerging at present
To solve the problems, such as that distress in concrete provides completely new selection.By being equipped with the solvent of renovation agent, crack in inside concrete embedment
When generation, vessel breaks simultaneously flow out renovation agent, and renovation agent is reacted with periphery concrete, and then makes crack closure.Due to above-mentioned
Characteristic, self-repair concrete can generate initial stage in crack and carry out specific aim inhibition to it, greatly improve the safety of structure with it is resistance to
Long property.
Summary of the invention
In view of this, the present invention caters to the actual needs of building materials Intellectualized Tendency, engineering safety and durability, one kind is provided
Polystyrene microcapsules self-repair concrete structure and preparation method thereof.
The present invention is realized using following scheme:
A kind of polystyrene microcapsules self-repair concrete structure, including concrete component are uniformly mixed in the concrete component
Enter to be provided with polystyrene and repairs microcapsules, PVA fiber.
Further, the core materials that the polystyrene repairs microcapsules are anhydrous sodium metasilicate, and cyst material is polyphenyl
Ethylene.
Further, the PVA fiber is high strength and high flexibility PVA staple fiber, and tensile strength is 1200Mpa or more, elasticity
Modulus is 35Gpa or more, and diameter is 12-15 μm, and length is 12~15mm.
A kind of production method of such as polystyrene microcapsules self-repair concrete structure, comprising steps of
Step 1: production polystyrene repairs microcapsules；
Step 2: design concrete mix determines that polystyrene repairs microcapsules and PVA fibers content；
Step 3: the concrete on casting concrete component, and conserve molding.
Further, the polystyrene repairs the volume of microcapsules and cement volume ratio is 3.9% ~ 4.2%.
Further, the volume ratio of the volume and concrete of the PVA fiber (3) is 1.2 ‰ ~ 1.4 ‰.
Further, the step 1 specifically includes:
Step 11: pouring into dichloromethane solution in capsule production container, then polystyrene is poured into container, be mixed equal
It is even, dissolve polystyrene；
Step 12: anhydrous sodium metasilicate particle being poured into container again, stirring makes to be uniformly mixed；
Step 13: capsule being made into container closure, while conduit beyond the Great Wall, be connected to the gas treatment cylinder equipped with ethyl alcohol；
Step 14: heating container makes dichloromethane solution volatilize, to obtain solid matter and take out solid after 10min；
Step 15: solid matter being broken into the sheet-like particle that diameter is 5 ~ 6mm, the polystyrene as actually used is repaired micro-
Capsule.
Further, in the step 2, when the strength grade of the concrete component is C40, its slump be 130 ~
When 160mm, cement consumption is 415 ~ 427 parts, fine aggregate dosage is 731 ~ 737 parts, coarse aggregate dosage is 938 ~ 964 parts, water is used
Amount is 110 ~ 113 parts, flyash dosage is 75 ~ 78 parts, 7.5 ~ 7.8 parts of water-reducing agent dosage, and the polystyrene repairs microcapsules
Volume and cement volume ratio be 3.9% ~ 4.2%, the volume ratio of the volume of the PVA fiber and concrete is 1.2 ‰ ~ 1.4 ‰.
Further, the cement is 42.5 ordinary portland cement of PC；The flyash is to meet international GB/
II grade of fly ash in electric power plant of 2005 standard of T1506-；The coarse aggregate is the granite rubbles of 5 ~ 10mm continuous grading；Institute
Stating fine aggregate is natural river sand, sand in IIth area.
Further, the polystyrene repairs microcapsules, PVA fiber is uniformly mixed in concrete in the form of aggregate.
Compared with prior art, the present invention improves the crack resistance of concrete, while also giving concrete damage identification
With the ability of selfreparing, just carries out being directed in the early stage of development of distress in concrete and effectively inhibit, greatly reduced crack
Later period repair caused by great number cost, greatly improve durability, safety and the economy of concrete structure.
Detailed description of the invention
Fig. 1 is the organigram of the self-repair concrete structure of the embodiment of the present invention.
Fig. 2 is that the polystyrene of the embodiment of the present invention repairs the organigram of microcapsules.
Fig. 3 is the schematic diagram of the polystyrene capsule producing device of the embodiment of the present invention.
Figure label explanation: 1- concrete component, 2- polystyrene repair microcapsules, 3- cellulose fibre, 4- without water silicon
Sour sodium, 5- polystyrene, 6- capsule make container, 7- gas treatment cylinder.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, specific embodiment and phase will be passed through below
Attached drawing is closed, invention is further described in detail.
Embodiment one
As shown in Fig. 1 ~ 3, a kind of polystyrene microcapsules self-repair concrete structure, including concrete component 1, the concrete
Uniformly incorporation is provided with polystyrene reparation microcapsules 2, PVA fiber 3 to component 1.The polystyrene repairs the capsule-core of microcapsules 2
Material is anhydrous sodium metasilicate 4, and cyst material is polystyrene 5.
The PVA fiber 3 is the high strength and high flexibility PVA staple fiber of Changzhou Yi Tian company production, and tensile strength is
1600Mpa, elasticity modulus 35Gpa, diameter are 14 μm, and length is 12~15mm.
Embodiment two
A kind of such as self-repair concrete construction manufacturing method, comprising steps of
Step 1: production polystyrene repairs microcapsules 2；
Step 2: design concrete mix determines that polystyrene repairs microcapsules 2 and 3 volume of PVA fiber；
Step 3: the concrete on casting concrete component, and conserve molding.
In the present embodiment, the step 1 is specifically included:
Step 11: pouring into dichloromethane solution in capsule production container 6, then polystyrene 5 is poured into container, be mixed equal
It is even, dissolve polystyrene 5；
Step 12: graininess anhydrous sodium metasilicate 4 being poured into container again, stirring makes to be uniformly mixed；
Step 13: capsule production container 6 is closed, while conduit beyond the Great Wall, it is connected to the gas treatment cylinder 7 equipped with ethyl alcohol；
Step 14: heating capsule makes container 6, so that dichloromethane solution is volatilized, to obtain solid matter and will consolidate after 10min
Body takes out；
Step 15: solid matter being broken into the sheet-like particle that diameter is 5 ~ 6mm, the polystyrene as actually used is repaired micro-
Capsule 2.
In the step 2 of the embodiment of the present invention, when the strength grade of the concrete component 1 is C40, its slump is
When 130mm, cement consumption is 415 parts, fine aggregate dosage is 731 parts, coarse aggregate dosage is 938 parts, water consumption is 110 parts, powder
Coal ash dosage is 75 parts, 7.5 parts of water-reducing agent dosage, and the volume that the polystyrene repairs microcapsules 2 is with cement volume ratio
3.9%, the volume of the PVA fiber 3 and the volume ratio of concrete are 1.2 ‰.
Specifically, in the present embodiment, the cement is 42.5 ordinary portland cement of stone well board PC；The flyash is
Meet II grade of fly ash in electric power plant of the international standard of GB/ T1506-2005；The flower of 5 ~ 10mm of coarse aggregate continuous grading
Hilllock stone rubble；The fine aggregate is natural river sand, sand in IIth area.
In manufacturing process, the polystyrene repairs microcapsules 2, PVA fiber 3 uniformly mixes concrete in the form of aggregate
In.
Embodiment three
A kind of such as self-repair concrete construction manufacturing method, comprising steps of
Step 1: production polystyrene repairs microcapsules 2；
Step 2: design concrete mix determines that polystyrene repairs microcapsules 2 and 3 volume of PVA fiber；
Step 3: the concrete on casting concrete component, and conserve molding.
In the present embodiment, the step 1 is specifically included:
Step 11: pouring into dichloromethane solution in capsule production container 6, then polystyrene 5 is poured into container, be mixed equal
It is even, dissolve polystyrene 5；
Step 12: graininess anhydrous sodium metasilicate 4 being poured into container again, stirring makes to be uniformly mixed；
Step 13: capsule production container 6 is closed, while conduit beyond the Great Wall, it is connected to the gas treatment cylinder 7 equipped with ethyl alcohol；
Step 14: heating capsule makes container 6, so that dichloromethane solution is volatilized, to obtain solid matter and will consolidate after 10min
Body takes out；
Step 15: solid matter being broken into the sheet-like particle that diameter is 5 ~ 6mm, the polystyrene as actually used is repaired micro-
Capsule 2.
In the step 2 of the embodiment of the present invention, when the strength grade of the concrete component 1 is C40, its slump is
When 130mm, cement consumption is 415 parts, fine aggregate dosage is 731 parts, coarse aggregate dosage is 938 parts, water consumption is 110 parts, powder
Coal ash dosage is 75 parts, 7.5 parts of water-reducing agent dosage, and the volume that the polystyrene repairs microcapsules 2 is with cement volume ratio
4.0%, the volume of the PVA fiber 3 and the volume ratio of concrete are 1.3 ‰.
Specifically, in the present embodiment, the cement is 42.5 ordinary portland cement of stone well board PC；The flyash is
Meet II grade of fly ash in electric power plant of the international standard of GB/ T1506-2005；The flower of 5 ~ 10mm of coarse aggregate continuous grading
Hilllock stone rubble；The fine aggregate is natural river sand, sand in IIth area.
In manufacturing process, the polystyrene repairs microcapsules 2, PVA fiber 3 uniformly mixes concrete in the form of aggregate
In.
Example IV
A kind of such as self-repair concrete construction manufacturing method, comprising steps of
Step 1: production polystyrene repairs microcapsules 2；
Step 2: design concrete mix determines that polystyrene repairs microcapsules 2 and 3 volume of PVA fiber；
Step 3: the concrete on casting concrete component, and conserve molding.
In the present embodiment, the step 1 is specifically included:
Step 11: pouring into dichloromethane solution in capsule production container 6, then polystyrene 5 is poured into container, be mixed equal
It is even, dissolve polystyrene 5；
Step 12: graininess anhydrous sodium metasilicate 4 being poured into container again, stirring makes to be uniformly mixed；
Step 13: capsule production container 6 is closed, while conduit beyond the Great Wall, it is connected to the gas treatment cylinder 7 equipped with ethyl alcohol；
Step 14: heating capsule makes container 6, so that dichloromethane solution is volatilized, to obtain solid matter and will consolidate after 10min
Body takes out；
Step 15: solid matter being broken into the sheet-like particle that diameter is 5 ~ 6mm, the polystyrene as actually used is repaired micro-
Capsule 2.
In the step 2 of the embodiment of the present invention, when the strength grade of the concrete component 1 is C40, its slump is
When 150mm, cement consumption is 420 parts, fine aggregate dosage is 735 parts, coarse aggregate dosage is 950 parts, water consumption is 112 parts, powder
Coal ash dosage is 76 parts, 7.6 parts of water-reducing agent dosage, and the volume that the polystyrene repairs microcapsules 2 is with cement volume ratio
4.2%, the volume of the PVA fiber 3 and the volume ratio of concrete are 1.4 ‰.
Specifically, in the present embodiment, the cement is 42.5 ordinary portland cement of stone well board PC；The flyash is
Meet II grade of fly ash in electric power plant of the international standard of GB/ T1506-2005；The flower of 5 ~ 10mm of coarse aggregate continuous grading
Hilllock stone rubble；The fine aggregate is natural river sand, sand in IIth area.
In manufacturing process, the polystyrene repairs microcapsules 2, PVA fiber 3 uniformly mixes concrete in the form of aggregate
In.
The concrete component 1 of above-described embodiment obtains significantly due to being mixed with PVA fiber 3, the cracking resistance of concrete
It is promoted, to reduce the probability of crack generation to a certain extent.Meanwhile if distress in concrete generates, it is randomly dispersed in and splits
Polystyrene at seam is repaired microcapsules 2 and is ruptured by concentrated stress, capsulated anhydrous sodium metasilicate particle exposure, and
With the calcium hydroxide reaction in surrounding concrete matrix under the excitation of water, the hydrated calcium silicate gel in filling crack is generated, in turn
It is closed crack.
It should be noted that the foregoing is merely illustrative of the preferred embodiments of the present invention, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, made any modifications, equivalent replacements, and improvements etc. should be included in protection of the invention
Range.
Claims (10)
1. a kind of polystyrene microcapsules self-repair concrete structure, including concrete component (1), it is characterised in that: described mixed
Uniformly incorporation is provided with polystyrene and repairs microcapsules (2) in solidifying soil component (1), PVA fiber (3).
2. polystyrene microcapsules self-repair concrete structure according to claim 1, it is characterised in that: the polyphenyl second
The core materials that alkene repairs microcapsules (2) are anhydrous sodium metasilicate particle (4), and cyst material is polystyrene (5).
3. polystyrene microcapsules self-repair concrete structure according to claim 1, it is characterised in that: the PVA is fine
Tieing up (3) is high strength and high flexibility PVA staple fiber, and tensile strength is 1200Mpa or more, and elasticity modulus is 35Gpa or more, and diameter is
12-15 μm, length is 12~15mm.
4. a kind of production method of the polystyrene microcapsules self-repair concrete structure as described in any one of claim 1-3,
Characterized in that it comprises the following steps:
Step 1: production polystyrene repairs microcapsules (2)；
Step 2: design concrete mix determines that polystyrene repairs microcapsules (2) and PVA fiber (3) volume；
Step 3: the concrete on casting concrete component, and conserve molding.
5. styrene microcapsules self-repair concrete structure according to claim 4, it is characterised in that: the polystyrene
The volume and cement volume ratio for repairing microcapsules (2) are 3.9% ~ 4.2%.
6. styrene microcapsules self-repair concrete structure according to claim 4, it is characterised in that: the PVA fiber
(3) volume ratio of volume and concrete is 1.2 ‰ ~ 1.4 ‰.
7. production method according to claim 4, which is characterized in that the step 1 specifically includes:
Step 11: pouring into dichloromethane solution in capsule production container (6), then polystyrene is poured into container, be mixed
Uniformly, dissolve polystyrene；
Step 12: anhydrous sodium metasilicate particle being poured into container again, stirring makes to be uniformly mixed；
Step 13: capsule production container (6) is closed, while conduit beyond the Great Wall, even with the gas treatment cylinder (7) equipped with ethyl alcohol
It is logical；
Step 14: heating capsule production container (6) makes dichloromethane solution volatilize, to obtain solid matter and in 10-15min
Solid is taken out afterwards；
Step 15: solid matter being broken into the sheet-like particle that diameter is 5 ~ 6mm, the polystyrene as actually used is repaired micro-
Capsule (2).
8. production method according to claim 4, which is characterized in that in the step 2, when the concrete component
(1) when strength grade is C40, its slump is 130 ~ 160mm, cement consumption is 415 ~ 427 parts, fine aggregate dosage be 731 ~
737 parts, coarse aggregate dosage be 938 ~ 964 parts, water consumption is 110 ~ 113 parts, flyash dosage is 75 ~ 78 parts, water-reducing agent dosage
7.5 ~ 7.8 parts, the polystyrene repairs the volume of microcapsules (2) and cement volume ratio is 3.9% ~ 4.2%, the PVA fiber
(3) volume ratio of volume and concrete is 1.2 ‰ ~ 1.4 ‰.
9. production method according to claim 8, which is characterized in that the cement is 42.5 ordinary portland cement of PC；
The flyash is II grade of fly ash in electric power plant for meeting the international standard of GB/ T1506-2005；The coarse aggregate is 5 ~ 10mm
The granite rubbles of continuous grading；The fine aggregate is natural river sand, sand in IIth area.
10. wanting 4 to seek the production method according to right, which is characterized in that the polystyrene repairs microcapsules (2), PVA fibre
Dimension (3) is uniformly mixed in concrete in the form of aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811175226.XA CN109180044A (en) | 2018-10-10 | 2018-10-10 | A kind of polystyrene microcapsules self-repair concrete structure and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811175226.XA CN109180044A (en) | 2018-10-10 | 2018-10-10 | A kind of polystyrene microcapsules self-repair concrete structure and preparation method thereof |
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| CN109180044A true CN109180044A (en) | 2019-01-11 |
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ID=64947198
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| CN201811175226.XA Pending CN109180044A (en) | 2018-10-10 | 2018-10-10 | A kind of polystyrene microcapsules self-repair concrete structure and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807778A (en) * | 2020-06-03 | 2020-10-23 | 中国建筑第八工程局有限公司 | Concrete for shielding radiation |
| CN114083669A (en) * | 2021-11-24 | 2022-02-25 | 山东港基建设集团有限公司 | Steel wire mesh rack insulation board and preparation method thereof |
| CN115231863A (en) * | 2022-08-09 | 2022-10-25 | 南通理工学院 | Fiber concrete composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944833A (en) * | 2015-03-31 | 2015-09-30 | 深圳大学 | Microcapsule for self-repair concrete and preparation method of self-repair concrete |
| CN108558253A (en) * | 2018-06-11 | 2018-09-21 | 华南理工大学 | A kind of self-repair concrete structure and preparation method thereof having self sensing capability |
| CN108585674A (en) * | 2018-04-28 | 2018-09-28 | 华南理工大学 | A kind of self-repair concrete and preparation method thereof of enhancing repairing performance |
-
2018
- 2018-10-10 CN CN201811175226.XA patent/CN109180044A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944833A (en) * | 2015-03-31 | 2015-09-30 | 深圳大学 | Microcapsule for self-repair concrete and preparation method of self-repair concrete |
| CN108585674A (en) * | 2018-04-28 | 2018-09-28 | 华南理工大学 | A kind of self-repair concrete and preparation method thereof of enhancing repairing performance |
| CN108558253A (en) * | 2018-06-11 | 2018-09-21 | 华南理工大学 | A kind of self-repair concrete structure and preparation method thereof having self sensing capability |
Non-Patent Citations (1)
| Title |
|---|
| 朱效荣等主编: "《混凝土工作性调整》", 31 May 2016, 中国建材工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807778A (en) * | 2020-06-03 | 2020-10-23 | 中国建筑第八工程局有限公司 | Concrete for shielding radiation |
| CN114083669A (en) * | 2021-11-24 | 2022-02-25 | 山东港基建设集团有限公司 | Steel wire mesh rack insulation board and preparation method thereof |
| CN115231863A (en) * | 2022-08-09 | 2022-10-25 | 南通理工学院 | Fiber concrete composite material and preparation method thereof |
| CN115231863B (en) * | 2022-08-09 | 2023-08-22 | 南通理工学院 | Fiber concrete composite material and preparation method thereof |
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