CN106396521A - Early strength self restoration grouting material - Google Patents
Early strength self restoration grouting material Download PDFInfo
- Publication number
- CN106396521A CN106396521A CN201610781729.6A CN201610781729A CN106396521A CN 106396521 A CN106396521 A CN 106396521A CN 201610781729 A CN201610781729 A CN 201610781729A CN 106396521 A CN106396521 A CN 106396521A
- Authority
- CN
- China
- Prior art keywords
- grouting material
- early strength
- quartz sand
- parts
- strength self
- Prior art date
- 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.)
- Pending
Links
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
- 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
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/065—Polyacrylates; Polymethacrylates
- C04B16/0658—Polyacrylonitrile
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
-
- 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
- C04B2103/601—Agents for increasing frost resistance
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
Abstract
The invention discloses an early strength self restoration grouting material, which is prepared from the following ingredients in parts by mass: 45 to 48 parts of cement, 15 to 20 parts of first quartz sand, 15 to 20 parts of second quartz sand, 15 to 20 parts of third quartz sand, 0.07 to 0.09 part of polyacrylonitrile fiber, 0.1 to 0.2 part of polycarboxylate-type antifreezing agents and 2 to 3 parts of calcium oxide type expansive agents; by adding polycarboxylate-type antifreezing agents, the water molecule state is changed at the low temperature to form hydrate; the ice formation is prevented; after the hydration heat release of the early strength self restoration grouting material, water in the hydrate is gradually released and takes part in the hydration reaction to ensure the normal hardening of the early strength self restoration grouting material at the low-temperature condition; the polyacrylonitrile fiber contains ingredients capable of promoting secondary enhancement of the early strength self restoration grouting material; the inhibition effect is achieved on the shrinkage of the early strength self restoration grouting material; fracture can occur under the effect of the stress due to micro cracks generated by the early strength self restoration grouting material, so that internal ingredients are released for repairing the crack regions; the goal of self restoration is achieved.
Description
Technical field
The disclosure relates generally to building field, more particularly, to a kind of early strong selfreparing grouting material.
Background technology
Early strong selfreparing grouting material is using high-strength material as aggregate, using cement as bonding agent, is aided with upper flow regime, micro-
The materials such as expansion, anti-isolation are formulated.It adds a certain amount of water at the construction field (site), can use after stirring.Early strong
It is good that selfreparing grouting material has a self drainage, soon firmly, early strong, high-strength, ungauged regions, microdilatancy；Nontoxic, harmless, not aging, to water quality
And surrounding is pollution-free, from close property good, antirust the features such as.In construction party face, there is reliable in quality, reduces cost, reduction of erection time
And easy to use the advantages of.
The early strong selfreparing grouting material gain in strength of prior art depends on the hydration reaction of cement-based material, in stress or evil
Under bad environment, the growth of intensity is affected substantially, under the influence of such as running into various dynamic loads in work progress, inside can be led to go out
Existing microcrack, the relative size of connecting portion simultaneously less forms certain impact to the interconnection function in later stage.
Content of the invention
In view of drawbacks described above of the prior art or deficiency can normally be hardened under a kind of low temperature environment it is desirable to provide,
By after certain destruction situation can self-regeneration intensity, there is the early strong selfreparing grouting material of early strengthening and high strengthening simultaneously.
In a first aspect, early-strength selfreparing grouting material, according to the mass fraction, including following component：
Cement：45-48 part,
First quartz sand：15-20 part,
Second quartz sand：15-20 part,
3rd quartz sand：15-20 part,
Polyacrylonitrile fibre：0.07-0.09 part,
Polycarboxylic acids anti-freeze agent：0.1-0.2 part,
Calcium oxide expansion agents：2-3 part.
The technical scheme being provided according to the embodiment of the present application, will change water by adding polycarboxylic acids anti-freeze agent in low temperature
Molecularity, forms hydrate, prevents from forming ice, and after early strong selfreparing grouting material carries out hydration heat, by hydrate
Water progressively discharge, participate in hydration reaction and ensure that early strong selfreparing grouting material normally hardens at low temperatures, polyacrylonitrile
Fiber contains and can promote the early strong secondary enhanced composition of selfreparing grouting material, early strong selfreparing grouting material has been shunk and has suppressed work
With early strong selfreparing grouting material produces and fracture occurs under the stress that microcrack causes, thus discharging internal component, repairs
Crack area, reaches the purpose of self-regeneration.
Specific embodiment
With reference to embodiment, the application is described in further detail.It is understood that tool described herein
Body embodiment is used only for explaining related invention, rather than the restriction to this invention.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.To describe the application below in conjunction with embodiment in detail.
Embodiment one
The construction method of early-strength selfreparing grouting material, comprises the following steps：
The early strong selfreparing grouting material of configuration：According to the mass fraction, take the dispensing of following component, add water, stir,
Cement：45-48 part,
First quartz sand：15 parts,
Second quartz sand：15 parts,
3rd quartz sand：15 parts,
Polyacrylonitrile fibre：0.07 part,
Polycarboxylic acids anti-freeze agent：0.1 part,
Calcium oxide expansion agents：2 parts；
Grouting prepares：Carry out dabbing process to by construction surface, clean by the debris on construction surface, 24 is little before construction
When, moisten to by construction surface, first 1 hour in construction, remove by the hydrops on construction surface, applied by grouting construction figure
Work surface supporting module, the seam crossing cement mortar between template and basis and between template and template or adhesive tape joint seal；
Grouting：During slurry back-grouting, it is in the milk from side or adjacent both sides, till overflowing from opposite side,
Continuously it is in the milk, after the completion of construction grout surface, outwards cut sth. askew along by construction marginal surface in the 3-6 hour after grouting
45 ° of oblique angles or layer surface press polish of being in the milk in the 3-6 hour after grouting；
Grouting maintenance：Grouting finishes in latter 30 minutes, adds a cover wet straw bag or rock wool quilt on grouting surface, and keeps moistening.
Further, poly- third refining nitrile fiber is set to hollow structure.
Further, the mesh number of the first quartz sand is 6-8 mesh.
Further, the mesh number of the second quartz sand is 10-20 mesh.
Further, the mesh number of the 3rd quartz sand is 20-40 mesh.
Further, stir as mechanical agitation, the churned mechanically time is 1-2 minute.
Further, stir as manual stirring, manual stirring is initially charged 2/3rds water, stir 2 minutes, be subsequently adding
Remaining water, stirs.
Further, debris be rubble, laitance, floating ash, greasy dirt and releasing agent.
Embodiment two
The construction method of early-strength selfreparing grouting material, comprises the following steps：
The early strong selfreparing grouting material of configuration：According to the mass fraction, take the dispensing of following component, add water, stir,
Cement：45-48 part,
First quartz sand：20 parts,
Second quartz sand：20 parts,
3rd quartz sand：20 parts,
Polyacrylonitrile fibre：0.09 part,
Polycarboxylic acids anti-freeze agent：0.2 part,
Calcium oxide expansion agents：3 parts；
Grouting prepares：Carry out dabbing process to by construction surface, clean by the debris on construction surface, 24 is little before construction
When, moisten to by construction surface, first 1 hour in construction, remove by the hydrops on construction surface, applied by grouting construction figure
Work surface supporting module, the seam crossing cement mortar between template and basis and between template and template or adhesive tape joint seal；
Grouting：During slurry back-grouting, it is in the milk from side or adjacent both sides, till overflowing from opposite side,
Continuously it is in the milk, after the completion of construction grout surface, outwards cut sth. askew along by construction marginal surface in the 3-6 hour after grouting
45 ° of oblique angles or layer surface press polish of being in the milk in the 3-6 hour after grouting；
Grouting maintenance：Grouting finishes in latter 30 minutes, adds a cover wet straw bag or rock wool quilt on grouting surface, and keeps moistening.
Further, poly- third refining nitrile fiber is set to hollow structure.
Further, the mesh number of the first quartz sand is 6-8 mesh.
Further, the mesh number of the second quartz sand is 10-20 mesh.
Further, the mesh number of the 3rd quartz sand is 20-40 mesh.
Further, stir as mechanical agitation, the churned mechanically time is 1-2 minute.
Further, stir as manual stirring, manual stirring is initially charged 2/3rds water, stir 2 minutes, be subsequently adding
Remaining water, stirs.
Further, debris be rubble, laitance, floating ash, greasy dirt and releasing agent.
In an embodiment of the present invention, can normally harden at low ambient temperatures, can after by certain destruction situation
Self-regeneration intensity, has the characteristics such as early strengthening and high strengthening simultaneously.Equipment Foundations surface should carry out dabbing process.Cleaning equipment underlying table
Face, must not have the debris such as rubble, laitance, floating ash, greasy dirt and releasing agent.It is in the milk first 24 hours, equipment Foundations surface should be fully wet
Profit.It is in the milk first 1 hour, remove hydrops.By grouting construction figure supporting module.Seam crossing between template and basis, template and template
With joint seals such as cement mortar, adhesive tapes, reach the watertight degree of integral mold plate.The horizontal range of template and plant bottom case surrounding should be controlled
Make in 100mm about, it is beneficial to grouting construction.Die head absolute altitude should exceed plant bottom case upper surface 50mm.Such as go out in grouting
Existing running pulp phenomenon, should be processed in time.
During grouting, should meet the following requirements.During early strong selfreparing grouting material back-grouting, should be from side or adjacent both sides
Multiple spot is in the milk, and till overflowing from opposite side, is beneficial to the aerofluxuss in filling process.Must not be filled from four sides simultaneously
Slurry.It is in the milk after starting it is necessary to be carried out continuously it is impossible to be interrupted.And shorten grouting time as far as possible.Filling process is forbidden shake
Smash.Can use grouting booster to promote early strong selfreparing grouting material along grout blanket bottom if necessary, forbid from grout blanket, top
Promote, to guarantee the homogeneity of grout blanket.Equipment Foundations grouting finish after, should after grouting 3～6 hours outside along device end
Cut 45 DEG C of oblique angles to prevent free end from producing crack.Processing as cannot be carried out trimming, should be incited somebody to action with spatula for 3～6 hours after grouting
Grouting layer surface press polish.
In embodiments of the invention, antifreezing agent will change hydrone state in low temperature, form hydrate, prevent from forming ice,
And after early strong selfreparing grouting material carries out hydration heat, the water in hydrate is progressively discharged, participates in hydration reaction and ensure early
Strong selfreparing grouting material normally hardens at low temperatures.The poly- third refining nitrile fiber with hollow structure, hollow bulb are filled
Divide containing the early strong secondary enhanced composition of selfreparing grouting material can be promoted, one side fiber shrinks to early strong selfreparing grouting material
Inhibitory action, on the other hand produces in early strong selfreparing grouting material and fracture occurs under the stress that microcrack causes, thus
Release internal component, mend a split region, reaches the purpose of self-regeneration.
Embodiments of the invention have advantages below：
1st, early strong, high-strength：Intensity reaches as high as more than 60MPa within one day；
2nd, from fluidised form：Scene only need to add water after stirring, is poured into using slip casing by pressure equipment, can automatically fill up empty after pouring into
Gap；
3rd, microdilatancy：To ensure firm between sleeve and reinforcing bar combination；
4th, non-corroding effect：The non-corrodings such as reinforcing bar, steel plate are endangered；
5th, frost resistance：Can at a temperature of subzero 20 DEG C normal construction, range is extensive；
6th, self-reparing capability：In the case that early strength is impaired, intensity reaches to specific strength more than 95% within 28 days.With
Upper description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art should manage
Solution, involved invention scope in the application however it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, simultaneously
Also should cover in the case of without departing from described inventive concept, combination in any is carried out by above-mentioned technical characteristic or its equivalent feature and
The other technical schemes being formed.The technology that such as features described above and (but not limited to) disclosed herein have similar functions is special
Levy the technical scheme replaced and formed mutually.
Claims (5)
1. a kind of early strong selfreparing grouting material it is characterised in that according to the mass fraction, including following component：
Cement：45-48 part,
First quartz sand：15-20 part,
Second quartz sand：15-20 part,
3rd quartz sand：15-20 part,
Polyacrylonitrile fibre：0.07-0.09 part,
Polycarboxylic acids anti-freeze agent：0.1-0.2 part,
Calcium oxide expansion agents：2-3 part.
2. morning according to claim 1 strong selfreparing grouting material is it is characterised in that during described poly- third refining nitrile fiber is set to
Hollow structure.
3. morning strong selfreparing grouting material according to claim 1 is it is characterised in that the mesh number of described first quartz sand is 6-
8 mesh.
4. morning according to claim 1 strong selfreparing grouting material is it is characterised in that the mesh number of described second quartz sand is
10-20 mesh.
5. morning according to claim 1 strong selfreparing grouting material is it is characterised in that the mesh number of described 3rd quartz sand is
20-40 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610781729.6A CN106396521A (en) | 2016-08-31 | 2016-08-31 | Early strength self restoration grouting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610781729.6A CN106396521A (en) | 2016-08-31 | 2016-08-31 | Early strength self restoration grouting material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106396521A true CN106396521A (en) | 2017-02-15 |
Family
ID=58000787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610781729.6A Pending CN106396521A (en) | 2016-08-31 | 2016-08-31 | Early strength self restoration grouting material |
Country Status (1)
| Country | Link |
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| CN (1) | CN106396521A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107938023A (en) * | 2017-12-29 | 2018-04-20 | 成都新柯力化工科技有限公司 | A kind of cable cover(ing) self-repair material and preparation method |
| CN109836065A (en) * | 2019-04-17 | 2019-06-04 | 重庆大学 | A kind of functional additive and preparation method thereof improving cement-based material crack self-healing properties and application method |
| CN110105031A (en) * | 2019-06-20 | 2019-08-09 | 中建科技湖南有限公司 | A kind of selfreparing grouting material and preparation method thereof |
| CN112811871A (en) * | 2021-01-20 | 2021-05-18 | 武汉中地大非开挖研究院有限公司 | Spray-built cement-based mortar material for repairing low-temperature trenchless pipeline and preparation method thereof |
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Cited By (5)
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| CN107938023A (en) * | 2017-12-29 | 2018-04-20 | 成都新柯力化工科技有限公司 | A kind of cable cover(ing) self-repair material and preparation method |
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| CN110105031A (en) * | 2019-06-20 | 2019-08-09 | 中建科技湖南有限公司 | A kind of selfreparing grouting material and preparation method thereof |
| CN110105031B (en) * | 2019-06-20 | 2021-09-14 | 中建科技湖南有限公司 | Self-repairing grouting material and preparation method thereof |
| CN112811871A (en) * | 2021-01-20 | 2021-05-18 | 武汉中地大非开挖研究院有限公司 | Spray-built cement-based mortar material for repairing low-temperature trenchless pipeline and preparation method thereof |
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Application publication date: 20170215 |
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