CN110510910A - A kind of thin micro crack microcapsules self-repair material of the concrete that cyst wall is degradable - Google Patents
A kind of thin micro crack microcapsules self-repair material of the concrete that cyst wall is degradable Download PDFInfo
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- CN110510910A CN110510910A CN201910914368.1A CN201910914368A CN110510910A CN 110510910 A CN110510910 A CN 110510910A CN 201910914368 A CN201910914368 A CN 201910914368A CN 110510910 A CN110510910 A CN 110510910A
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- Prior art keywords
- concrete
- self
- calcium ion
- cyst wall
- core material
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
Abstract
The invention belongs to concrete self-repair material technical fields, it is related to a kind of thin micro crack microcapsules self-repair material of the concrete that cyst wall is degradable, renovation agent is stored in advance by microcapsules, the cyst wall uses the cellulosic material of the oxidizable degradation under light action, with photooxidation droping effect, it can guarantee and ruptured at the cracked place of concrete, discharge self repairing agent；The self repairing agent core material includes: sodium metasilicate (precipitated crystal), sodium gluconate (complexing-precipitating), high adsorbent, calcium ion replenishers, swelling agent, and selfreparing core material weight ratio is sodium metasilicate: sodium gluconate: high adsorbent: calcium ion replenishers: swelling agent=(6 ~ 10): (0.8 ~ 1.2): (6 ~ 10): (8 ~ 12): (8 ~ 12).There is the self repairing agent macroscopic view to repair the complementarity repaired with subtle sight, have long-term, sustainability self-reparing capability.
Description
Technical field
The invention belongs to concrete self-repair material technical fields, are related to a kind of subtle see of concrete that cyst wall is degradable and split
Stitch microcapsules self-repair material.
Background technique
Cement concrete is a kind of very strong material of brittleness, subtle sight easily occurs in premature cure and military service use process
Crack reduces structure durability.Although taking the technical measures for much avoiding concrete cracking, concrete in engineering
The phenomenon that structure crack, is still generally existing, and service life is far below expection.
It is resistance to for structure to alleviate crack that the modes such as coating, the cementation of fissures are mainly used for the concrete structure after cracking at present
The influence of long property, that there are maintenance work amounts is big, maintenance costs is high, needs to be repeated several times in local constructional difficulties, life cycle and apply
The problems such as work.Concrete self-repair material makes concrete itself have repair function, can be in the case where there are micro-cracks
By self-repair material physically or chemically act on filling micro-cracks, this will significantly simplify concrete-bridge maintenance work amount with
Difficulty is conserved, maintenance costs is reduced.
Current concrete self-repair material mainly passes through the containers such as microcapsules or glass-micropipe and stores renovation agent in advance, when mixed
After solidifying soil cracking, crack drawing crack cyst wall or glass tube, renovation agent leakage, itself or occur with external substance physically or chemically anti-
It answers, blocks crack.Cyst wall substance and self repairing agent are the cores of concrete self-repair material.
Summary of the invention
The present invention provides a kind of self-repair material, stores self repairing agent in advance by microcapsules.Its cyst wall is in light action
Under oxidizable degradation cellulosic material, self repairing agent core material be mainly sodium metasilicate, sodium gluconate, adsorbent, calcium ion mend
Fill agent and swelling agent.
The present invention adopts the following technical scheme: fiber of the cyst wall of self-repair material using the oxidizable degradation under light action
Cellulosic material has photooxidation droping effect, it is ensured that ruptures at the cracked place of concrete, discharges self repairing agent.Selfreparing core material
Include: sodium metasilicate (precipitated crystal), sodium gluconate (complexing-precipitating), high adsorbent, calcium ion replenishers, swelling agent.It reviews one's lessons by oneself
Multiple core material weight ratio is sodium metasilicate: sodium gluconate: high adsorbent: calcium ion replenishers: swelling agent=(6 ~ 10): (0.8 ~
1.2): (6 ~ 10): (8 ~ 12): (8 ~ 12).
The fragmentation of the cyst wall is chemical action, rather than crack occurrence is relied on to generate the physical action of tearing, is crushed
Effect is more secure；For the concrete not cracked, the cyst wall of self-repair material will not rupture, and selfreparing core material is still
It can stablize and retain, keep self-reparing capability.
There is the concrete self repairing agent core material macroscopic view to repair and the subtle complementarity seen and repaired.The selfreparing core material
In contain swelling agent, cyst wall splitting release after can water swelling immediately, fill up relatively large gap；It is described from
The sodium metasilicate in core material is repaired, calcium silicates crystallization can be generated with calcium binding, it is good with inside concrete materials compatibility, it can hold
The subtle gap after magnesia expansion is repaired in continuous filling, so that the substance for refilling crack becomes finer and close.
The concrete self-repair material has long-term, sustainability self-reparing capability.In the selfreparing core material
High adsorption material has very strong adsorptivity, can adsorb other renovation agents, and has the function of sustained release, is conducive to microcapsules
Encapsulation；Calcium ion replenishers play the role of calcium ion supplementary source, cause calcium ion to lose by carbonization etc. in concrete
In the case where, calcium ion can be discharged, guarantees the calcium ion source for there are enough formation calcium silicates crystallizations at distress in concrete；Separately
Outside, contain sodium gluconate in the selfreparing core material, movement of the calcium ion in concrete can be promoted, work as concrete structure
Ensureing and easily mending from the external world in insufficient situation occur in calcium ion after long-time service, in concrete and self repairing agent
Calcium ion source is filled, defect of the calcium ion deficiency without can be carried out selfreparing in concrete is made up, repairing the thin micro crack of concrete
Reactivation power is more permanent and has sustainability.
The beneficial effects of the present invention are: the cyst wall of self-repair material has photooxidation droping effect, it is ensured that in concrete
Cracked place's rupture, discharges self repairing agent.There is the concrete self repairing agent core material macroscopic view reparation to repair with subtle sight
It is complementary.The concrete self-repair material has long-term, sustainability self-reparing capability.
Specific embodiment
A kind of thin micro crack microcapsules self-repair material of the concrete that cyst wall is degradable is stored certainly in advance by microcapsules
Renovation agent.
The cyst wall of self-repair material has photooxidation droping effect using the cellulosic material of the oxidizable degradation under light action
Fruit, it is ensured that ruptured at the cracked place of concrete, discharge self repairing agent.The fragmentation of cyst wall is chemical action, Er Feiyi
The physical action of tearing is generated by crack occurrence, crushing effect is more secure；For the concrete not cracked, self-repair material
Cyst wall will not rupture, selfreparing core material, which can still be stablized, to retain, keep self-reparing capability.
Selfreparing core material includes: sodium metasilicate (precipitated crystal), sodium gluconate (complexing-precipitating), high adsorbent, calcium ion
Replenishers, swelling agent.Selfreparing core material weight ratio is sodium metasilicate: sodium gluconate: high adsorbent: calcium ion replenishers: expansion
Agent=(6 ~ 10): (0.8 ~ 1.2): (6 ~ 10): (8 ~ 12): (8 ~ 12).
There is the concrete self repairing agent core material macroscopic view to repair and the subtle complementarity seen and repaired.Contain in selfreparing core material
Have swelling agent, cyst wall splitting release after can water swelling immediately, fill up relatively large gap；Selfreparing core material
In sodium metasilicate, can with calcium binding generate calcium silicates crystallization, good with inside concrete materials compatibility, sustainable filling is repaired
Subtle gap after multiple magnesia expansion, so that the substance for refilling crack becomes finer and close.
The concrete self-repair material has long-term, sustainability self-reparing capability.High suction in selfreparing core material
Attached property material has very strong adsorptivity, can adsorb other renovation agents, and has the function of sustained release, is conducive to microcapsules envelope
Dress；Calcium ion replenishers play the role of calcium ion supplementary source, cause calcium ion to lose by carbonization etc. in concrete
In the case of, calcium ion can be discharged, guarantees the calcium ion source for there are enough formation calcium silicates crystallizations at distress in concrete；In addition,
Contain sodium gluconate in selfreparing core material, movement of the calcium ion in concrete can be promoted, when concrete structure makes for a long time
Occur in insufficient situation with the calcium ion in rear, concrete and self repairing agent, can ensure from extraneous easily supplement calcium from
Component makes up defect of the calcium ion deficiency without can be carried out selfreparing in concrete, makes the thin micro crack repair ability of concrete
More for a long time and with sustainability.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In range disclosed by the invention, the change or replacement that can be readily occurred in should all be contained those familiar with the art
Lid is within the scope of the invention as claimed.
Claims (4)
1. a kind of thin micro crack microcapsules self-repair material of the concrete that cyst wall is degradable, reparation is stored by microcapsules in advance
Agent, which is characterized in that the cyst wall has photooxidation droping effect using the cellulosic material of the oxidizable degradation under light action,
It can guarantee and ruptured at the cracked place of concrete, discharge self repairing agent；The self repairing agent core material includes: sodium metasilicate (precipitating knot
It is brilliant), sodium gluconate (complexing-precipitating), high adsorbent, calcium ion replenishers, swelling agent, selfreparing core material weight ratio is silicic acid
Sodium: sodium gluconate: high adsorbent: calcium ion replenishers: swelling agent=(6 ~ 10): (0.8 ~ 1.2): (6 ~ 10): (8 ~ 12): (8 ~
12).
2. the thin micro crack microcapsules self-repair material of the degradable concrete of cyst wall according to claim 1, feature
It is, the fragmentation of the cyst wall is chemical action, rather than crack occurrence is relied on to generate the physical action torn, crushing effect
It is more secure；For the concrete not cracked, the cyst wall of self-repair material will not rupture, and selfreparing core material still can be with
Stabilization retains, and keeps self-reparing capability.
3. the thin micro crack microcapsules self-repair material of the degradable concrete of cyst wall according to claim 1, feature
It is, there is the concrete self repairing agent core material macroscopic view to repair with the subtle complementarity seen and repaired: in the selfreparing core material
Containing swelling agent, after cyst wall splitting releases can water swelling immediately, fill up relatively large gap；It is described to review one's lessons by oneself
Sodium metasilicate in multiple core material can generate calcium silicates crystallization with calcium binding, good with inside concrete materials compatibility, sustainable
The subtle gap after magnesia expansion is repaired in filling, so that the substance for refilling crack becomes finer and close.
4. the thin micro crack microcapsules self-repair material of the degradable concrete of cyst wall according to claim 1, feature
It is, the concrete self-repair material has long-term, sustainability self-reparing capability: the high suction in the selfreparing core material
Attached property material has very strong adsorptivity, can adsorb other renovation agents, and has the function of sustained release, is conducive to microcapsules envelope
Dress；The calcium ion replenishers play the role of calcium ion supplementary source, cause calcium ion to damage by carbonization etc. in concrete
In the case where mistake, calcium ion can be discharged, guarantees the calcium ion source for there are enough formation calcium silicates crystallizations at distress in concrete；Institute
It states in selfreparing core material and contains sodium gluconate, movement of the calcium ion in concrete can be promoted, when concrete structure is long-term
Ensureing from the external world in insufficient situation and easily supplementing calcium occur in calcium ion after use, in concrete and self repairing agent
Ion source makes up defect of the calcium ion deficiency without can be carried out selfreparing in concrete, enables the thin micro crack reparation of concrete
Power is more permanent and has sustainability.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910914368.1A CN110510910A (en) | 2019-09-26 | 2019-09-26 | A kind of thin micro crack microcapsules self-repair material of the concrete that cyst wall is degradable |
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| CN201910914368.1A CN110510910A (en) | 2019-09-26 | 2019-09-26 | A kind of thin micro crack microcapsules self-repair material of the concrete that cyst wall is degradable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233366A (en) * | 2020-01-13 | 2020-06-05 | 沈阳大学 | Preparation of corrosion-resistant self-repairing reinforced concrete member with built-in microcapsules |
| CN113045283A (en) * | 2021-03-24 | 2021-06-29 | 交通运输部公路科学研究所 | Intelligent trigger type concrete micro-crack self-repairing microcapsule and preparation method thereof |
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| CN109809728A (en) * | 2017-11-21 | 2019-05-28 | 世明大学校产学协力团 | Cement composite material comprising surface modified silicon crack autogenous healing capsule and its manufacturing method |
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| JP2000145158A (en) * | 1998-11-10 | 2000-05-26 | Nishimatsu Constr Co Ltd | Repairing method of crack of concrete construction |
| CN103496874A (en) * | 2013-09-16 | 2014-01-08 | 深圳大学 | Chemical self-repairing concrete with chemical trigger function and preparation method thereof |
| US20180072624A1 (en) * | 2015-03-31 | 2018-03-15 | Shenzhen University | Microcapsule for self-healing concrete and preparation method thereof, and self-healing concrete and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111233366A (en) * | 2020-01-13 | 2020-06-05 | 沈阳大学 | Preparation of corrosion-resistant self-repairing reinforced concrete member with built-in microcapsules |
| CN113045283A (en) * | 2021-03-24 | 2021-06-29 | 交通运输部公路科学研究所 | Intelligent trigger type concrete micro-crack self-repairing microcapsule and preparation method thereof |
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