CN107098661A - It is a kind of to resist scattered fast repairing material and preparation method thereof under water - Google Patents
It is a kind of to resist scattered fast repairing material and preparation method thereof under water Download PDFInfo
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- CN107098661A CN107098661A CN201710267172.9A CN201710267172A CN107098661A CN 107098661 A CN107098661 A CN 107098661A CN 201710267172 A CN201710267172 A CN 201710267172A CN 107098661 A CN107098661 A CN 107098661A
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- water
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- under water
- repairing material
- fast repairing
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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
- 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
- C04B28/06—Aluminous 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
- 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
-
- 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
- C04B2111/74—Underwater applications
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to concrete for hydraulic structure Rapid-Repair field, and in particular to a kind of to resist scattered fast repairing material and preparation method thereof under water.The each component of the patching material is calculated by weight as：70~90 parts of sulphate aluminium cement, 10~30 parts of Portland cement, 1~2 part of flocculant, 1~2.5 part of water reducer, 6~14 parts of redispersable latex powder, 150~200 parts of quartz sand, 0.15~0.25 part of defoamer, 35~50 parts of water.In the repairing work that patching material of the present invention is applied to concrete for hydraulic structure, under mutual synergy between each component, the patching material has the advantages that dispersion resistance is good, setting time is short under water and the wet interface binding intensity of concrete is high, stable mechanical property.
Description
Technical field
The invention belongs to concrete for hydraulic structure Rapid-Repair field, and in particular to it is a kind of resist under water scattered fast repairing material and
Its preparation method.
Background technology
In recent ten years, application of the concrete in terms of water conservancy project has obtained very fast development, substantial amounts of reservoir dam, water power
Stand, water delivery aqueduct, pipe culvert, channel are all built up by concrete material.However, because concrete itself tensile strength is low, by
The factor influence such as temperature difference influence and autogenous shrinkage, easily produces crack.The structure safety of hydraulic structure is not only endangered in crack,
But also seepage can be produced, aggravate the generation of chemical attack, freeze-thaw damage, steel bar corrosion and the alkali of concrete, make
The safe operation of hydraulic structure is on the hazard, the durability of serious reduction concrete for hydraulic structure.Therefore, concrete occur crack with
Breakage should be repaired in time.
It is low with wet basis face adhesion strength because existing concrete patching material is in water moderate resistance bad dispersibility, therefore water at present
Work concrete works there is no method to be repaired under water, mostly using method emptied of water such as cofferdam, then be repaired again, this
Not only cost is very high for repairing method, and wastes time and energy.
The content of the invention
The present invention is in view of the shortcomings of the prior art, it is therefore intended that provide a kind of scattered fast repairing material anti-under water and its system
Preparation Method.
For achieving the above object, the technical solution adopted by the present invention is：
It is a kind of to resist scattered fast repairing material under water, by sulphate aluminium cement, Portland cement, flocculant, can be again
Dispersed latex powder, water reducer, defoamer, quartz sand and water are prepared from, and each component is calculated by weight as：Sulphate aluminium cement
70~90 parts, 10~30 parts of Portland cement, 1~2 part of flocculant, 1~2.5 part of water reducer, redispersable latex powder 6~
14 parts, 150~200 parts of quartz sand, 0.15~0.25 part of defoamer, 35~50 parts of water.
In such scheme, the sulphate aluminium cement is R.SAC42.5 sulphate aluminium cements；The Portland cement
For P.O42.5 Portland cements.
In such scheme, the fineness of the quartz sand is 50~100 mesh.
In such scheme, the water reducer is high-efficiency water-reducing agent of poly-carboxylic acid.
In such scheme, the flocculant is anion-polyacrylamide, molecular weight >=12,000,000.
In such scheme, the redispersable latex powder is vinylacetate-ethylene-acrylic ester copolymer latex powder.
In such scheme, the defoamer is P803 organic silicon defoamers.
It is above-mentioned to resist the preparation method for disperseing fast repairing material under water, comprise the following steps：
(1) 70~90 parts of sulphate aluminium cement, 10~30 parts of Portland cement, flocculant are weighed by each raw material components
1~2 part, 1~2.5 part of water reducer, 6~14 parts of redispersable latex powder, 150~200 parts of quartz sand, defoamer 0.15~0.25
Part, 35~50 parts of water；
(2) water reducer is dissolved in advance in the water weighed, it is standby；
(3) sulphate aluminium cement, portland cement, quartz sand, flocculant, redispersable latex powder and defoamer are added
In agitated kettle, 60s is stirred, dry blend is obtained；
(4) the diminishing agent solution for preparing step (2) is added in the dry blend of step (3), is stirred 120s, is obtained under water
Anti- scattered fast repairing material.
In the present invention, sulphate aluminium cement has the advantages that morning is strong, high-strength, and Portland cement has later strength hair
The advantages of opening up stable, sulphate aluminium cement and Portland cement are compounded, and patching material is regulated and controled by changing compounding ratio
Setting time, reduce shrinkage factor at late stage, it is ensured that later strength development stabilization；Meanwhile, by the present invention in that using anionic
Polyacrylamide flocculant makes binder materials stable suspersion to increase the toughness of patching material mix, on the one hand in repairing material
In the slurry of material, on the other hand avoid quartz sand from isolating, so that patching material has excellent water resistant dispersibility, protect
Card patching material does not disperse in solidification process under water, so as to be advantageously implemented underwater repair；The present invention is also by adding acetic acid
Vinyl acetate-vinyl-acrylate copolymer redispersable latex powder, utilizes the vinylacetate-ethylene-acrylate emulsified again
The macromolecular chain of copolymer glues in the absorption and diffusion of concrete surface, the hygrometric state for significantly improving patching material in concrete surface
Connecing property, while vinylacetate-ethylene-acrylate copolymer is distributed in patching material system as reinforcing material, increase
The cohesive force of patching material, so as to ensure that patching material is closely pasted in water and do not fallen off with concrete interface；In addition, logical
Addition P803 organic silicon defoamers are crossed, patching material air entrapment is can obviously reduce, the compactness of patching material are improved, so as to change
The mechanical property of kind patching material.
Beneficial effects of the present invention：(1) patching material of the present invention is applied in the repairing work of underwater concrete,
Under mutual synergy between each component, the patching material has under water that dispersion resistance is good, setting time is short and coagulation
The advantages of wet interface binding intensity height of soil, stable mechanical property；(2) underwater concrete is carried out using patching material of the present invention
Repairing, have the advantages that easy to operate, cost is low, effect is good.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
It is a kind of to resist scattered fast repairing material under water, it is prepared as follows obtaining：
(1) 80 parts of R.SAC42.5 sulphate aluminium cements, 20 parts of P.O42.5 Portland cements, anionic is weighed to gather
2 parts of acrylamide (molecular weight >=12,000,000), 2 parts of high-efficiency water-reducing agent of poly-carboxylic acid, vinylacetate-ethylene-acrylic ester copolymer
8 parts of thing latex powder, 150 parts of quartz sand (fineness is 50~100 mesh), 0.25 part of P803 organic silicon defoamers, 45 parts of water；
(2) water reducer weighed is dissolved in the water weighed, it is standby；
(3) by the sulphate aluminium cement weighed, portland cement, quartz sand, flocculant, redispersable latex powder, froth breaking
Agent is added in agitated kettle, is stirred 60s, is obtained dry blend；
(4) solution for preparing step (2) is added in the dry blend of step (3), is stirred 120s, i.e., is resisted under water point
Dissipate fast repairing material.
That tests above-mentioned preparation resists scattered fast repairing material presetting period and final setting time under water under water, and respectively according to
Forming method is prepared after test specimen, maintenance 1d and 28d in forming method and air under water, test its under water adhesion strength, resist under water
Roll over intensity, under water compression strength and land and water strength ratio.
Forming method under water：Die trial is placed in water tank, water is added at die trial upper limit above 50mm, will be mixed with manual manipulation
The patching material become reconciled is shoveled into water at the water surface, is poured into die trial.Then die trial is taken out from water tank, die trial two is rapped
Side to promote draining, and make patching material levelling, it is closely knit, then by the patching material of excess with spatula it is floating after, by die trial
Put back in water, place form removal after 24h, under water test 1d adhesion strength under water, rupture strength, under water compression strength, remaining examination
Part continues maintenance to 28d in water.
Forming method in air：Die trial is placed in air China and foreign countries, poured into the patching material mixed and stirred in die trial with manual manipulation,
Vibration makes patching material levelling, closely knit then the patching material of excess is floating with spatula, form removal after placement 24h, tests the anti-of 1d
Compressive Strength, remaining test specimen is in fog room standard curing to 28d.
Patching material is molded the compression strength under being supported with the compression strength under maintenance with shaping in atmosphere with mark in water
Ratio be referred to as land and water strength ratio.Land and water strength ratio is bigger, and showing the material, dispersion resistance is better under water.
Embodiment 1 prepare patching material the performance test results be：The presetting period is 20min, final setting time under water
45min；1d adhesion strength 2.6MPa under water, 28d adhesion strength 5.6MPa under water；1d compression strength 27MPa under water, 28d is under water
Compression strength 48.3MPa；1d rupture strength 3.2MPa under water, 28d rupture strength 6.5MPa under water；1d land and waters strength ratio is
78%, 28d land and water strength ratio are 91%.
Embodiment 2
A kind of to resist scattered fast repairing material under water, each group distribution ratio is calculated by weight as：Weigh R.SAC42.5 sulphur aluminium
80 parts of acid salt cement, 20 parts of P.O42.5 Portland cements, vinylacetate-ethylene-acrylic ester copolymer latex powder
1.5 parts, 2 parts of high-efficiency water-reducing agent of poly-carboxylic acid, vinylacetate-ethylene -8 parts of acrylic ester copolymer latex powder, quartz sand (fineness
For 50~100 mesh) 150 parts, 0.25 part of P803 organic silicon defoamers, 45 parts of water.
Preparation method and performance test be the same as Example 1.Prepared patching material the performance test results are：When pre-hardening under water
Between be 22min, final setting time 48min；1d adhesion strength 2.2MPa under water, 28d adhesion strength 4.6MPa under water；1d resistance to compressions under water
Intensity 29MPa, 28d compression strength 46.2MPa under water；1d rupture strength 3.1MPa under water, 28d rupture strength 6.8MPa under water；
1d land and waters strength ratio is that 70%, 28d land and waters strength ratio is 88%.
Embodiment 3
A kind of to resist scattered fast repairing material under water, each group distribution ratio is calculated by weight as：Weigh R.SAC42.5 sulphur aluminium
80 parts of acid salt cement, 20 parts of P.O42.5 Portland cements, vinylacetate-ethylene-acrylic ester copolymer latex powder 2
(fineness is for part, 2 parts of high-efficiency water-reducing agent of poly-carboxylic acid, vinylacetate-ethylene -10 parts of acrylic ester copolymer latex powder, quartz sand
50~100 mesh) 150 parts, 0.25 part of P803 organic silicon defoamers, 45 parts of water.
Preparation method and performance test be the same as Example 1.Prepared patching material the performance test results are：When pre-hardening under water
Between be 24min, final setting time 50min；1d adhesion strength 2.3MPa under water, 28d adhesion strength 5.1MPa under water；1d resistance to compressions under water
Intensity 24MPa, 28d compression strength 47.1MPa under water；1d rupture strength 2.8MPa under water, 28d rupture strength 5.7MPa under water；
1d land and waters strength ratio is that 74%, 28d land and waters strength ratio is 90%.
Obviously, above-described embodiment is only intended to clearly illustrate made example, and the not limitation to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change or change therefore amplified
Move within still in the protection domain of the invention.
Claims (8)
1. a kind of resist scattered fast repairing material under water, it is characterised in that by sulphate aluminium cement, Portland cement, wadding
Solidifying agent, redispersable latex powder, water reducer, defoamer, quartz sand and water are prepared from, and each component is calculated by weight as：Sulphur
70 ~ 90 parts of aluminate cement, 10 ~ 30 parts of Portland cement, 1 ~ 2 part of flocculant, 1 ~ 2.5 part of water reducer, redispersible breast
6 ~ 14 parts of rubber powder, 150 ~ 200 parts of quartz sand, 0.15 ~ 0.25 part of defoamer, 35 ~ 50 parts of water.
2. according to claim 1 resist scattered fast repairing material under water, it is characterised in that the flocculant is anion
Type polyacrylamide, molecular weight >=12,000,000.
3. according to claim 1 resist scattered fast repairing material under water, it is characterised in that the redispersable latex powder
For vinylacetate-ethylene-acrylic ester copolymer latex powder.
4. according to claim 1 resist scattered fast repairing material under water, it is characterised in that the sulphate aluminium cement is
R.SAC42.5 sulphate aluminium cements；The Portland cement is P.O42.5 Portland cements.
5. according to claim 1 resist scattered fast repairing material under water, it is characterised in that the fineness of the quartz sand is
50~100 mesh.
6. according to claim 1 resist scattered fast repairing material under water, it is characterised in that the water reducer is polycarboxylic acids
High efficiency water reducing agent.
7. according to claim 1 resist scattered fast repairing material under water, it is characterised in that the defoamer has for P803
Machine silicon defoaming agent.
8. the preparation method of any scattered fast repairing material anti-under water of claim 1 ~ 7, comprises the following steps：
（1）Weighed by each raw material components：70 ~ 90 parts of sulphate aluminium cement, 10 ~ 30 parts of Portland cement, flocculant 1 ~ 2
Part, 1 ~ 2.5 part of water reducer, 6 ~ 14 parts of redispersable latex powder, 150 ~ 200 parts of quartz sand, 0.15 ~ 0.25 part of defoamer, water 35 ~
50 parts；
（2）Water reducer is dissolved in advance in the water weighed, it is standby；
（3）Sulphate aluminium cement, portland cement, quartz sand, flocculant, redispersable latex powder and defoamer are added and stirred
In pot, 60s is stirred, dry blend is obtained；
（4）By step（2）The diminishing agent solution of preparation is added to step（3）Dry blend in, stir 120s, resisted under water point
Dissipate fast repairing material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710267172.9A CN107098661A (en) | 2017-04-21 | 2017-04-21 | It is a kind of to resist scattered fast repairing material and preparation method thereof under water |
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| CN201710267172.9A CN107098661A (en) | 2017-04-21 | 2017-04-21 | It is a kind of to resist scattered fast repairing material and preparation method thereof under water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107840595A (en) * | 2017-09-29 | 2018-03-27 | 四川巨星新型材料有限公司 | A kind of concrete structure repairing agent and preparation method thereof, application process |
| CN109180129A (en) * | 2018-11-16 | 2019-01-11 | 石家庄铁道大学 | It is a kind of not disperse back cover material and its construction technology under water |
| CN110002826A (en) * | 2019-04-19 | 2019-07-12 | 湖北恒利建材科技有限公司 | A kind of polymer emulsion modified rapid repair mortar and preparation method thereof |
| CN112601785A (en) * | 2018-09-06 | 2021-04-02 | 瓦克化学股份公司 | Polymer powder composition redispersible in water |
| CN113955968A (en) * | 2021-10-09 | 2022-01-21 | 河南漏行天下工程技术有限公司 | Underwater undispersed grouting material |
| CN115159918A (en) * | 2022-07-04 | 2022-10-11 | 中国水利水电第七工程局有限公司 | Anti-dispersion self-compacting concrete for underwater repair and preparation method thereof |
| CN115849775A (en) * | 2022-11-21 | 2023-03-28 | 山东大学 | High-water-content anti-scouring sludge solidification grouting material and preparation method and application thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107840595A (en) * | 2017-09-29 | 2018-03-27 | 四川巨星新型材料有限公司 | A kind of concrete structure repairing agent and preparation method thereof, application process |
| CN107840595B (en) * | 2017-09-29 | 2020-11-17 | 四川巨星新型材料有限公司 | Concrete structure repairing agent and preparation method and application method thereof |
| CN112601785A (en) * | 2018-09-06 | 2021-04-02 | 瓦克化学股份公司 | Polymer powder composition redispersible in water |
| CN109180129A (en) * | 2018-11-16 | 2019-01-11 | 石家庄铁道大学 | It is a kind of not disperse back cover material and its construction technology under water |
| CN109180129B (en) * | 2018-11-16 | 2021-05-04 | 石家庄铁道大学 | Underwater non-dispersed bottom sealing material and construction process thereof |
| CN110002826A (en) * | 2019-04-19 | 2019-07-12 | 湖北恒利建材科技有限公司 | A kind of polymer emulsion modified rapid repair mortar and preparation method thereof |
| CN113955968A (en) * | 2021-10-09 | 2022-01-21 | 河南漏行天下工程技术有限公司 | Underwater undispersed grouting material |
| CN115159918A (en) * | 2022-07-04 | 2022-10-11 | 中国水利水电第七工程局有限公司 | Anti-dispersion self-compacting concrete for underwater repair and preparation method thereof |
| CN115849775A (en) * | 2022-11-21 | 2023-03-28 | 山东大学 | High-water-content anti-scouring sludge solidification grouting material and preparation method and application thereof |
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