CN106082766B - A kind of water conservation thickening additive for wet shotcreting - Google Patents
A kind of water conservation thickening additive for wet shotcreting Download PDFInfo
- Publication number
- CN106082766B CN106082766B CN201610375548.3A CN201610375548A CN106082766B CN 106082766 B CN106082766 B CN 106082766B CN 201610375548 A CN201610375548 A CN 201610375548A CN 106082766 B CN106082766 B CN 106082766B
- Authority
- CN
- China
- Prior art keywords
- parts
- concrete
- wet shotcreting
- additive
- weight
- 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.)
- Active
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
- 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
-
- 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
- C04B2103/44—Thickening, gelling or viscosity increasing agents
-
- 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
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of water conservations for wet shotcreting to viscosify additive, including following component by weight: Sodium Polyacrylate: 35-45 parts；Organic polymer binder；45-55 parts；Polyvinyl alcohol: 5-12 parts.The rebound degree of wet shotcreting on the one hand can be reduced since it is with good caking property and water-retaining property by addition tackifier, so that jet quality is more stable, avoids the waste of material；On the other hand, the dispersibility and mobility of concrete slurry can be improved, and then improve the uniformity of wet shotcreting, reduce porosity, the final mechanical property for improving wet shotcreting.
Description
Technical field
The invention belongs to the field of building materials, and in particular to a kind of water conservation thickening additive for wet shotcreting.
Background technique
Concrete-spraying technology is widely used in the surrounding rock supporting of geotechnical engineering and underground engineering, in practice it has proved that, injection
For concrete compared with cast-in-place concrete, easy construction is easy, saves formwork, casting and demoulding process, makes concrete conveyance, casting
It is combined into a procedure with tamping, manpower is saved, shortens the duration, it can also be by conveying hose in high room or narrow workspace
Between thin-wall construction construction.Currently, concrete ejection technology is widely used to metallurgy, coal, water conservancy and various underground engineerings
The supporting of chamber, tunnel.
Concrete-spraying technology develops to tide spray and wet shot from dry spray.For dry spray and tide spray, due to being sprayed when construction
The rebound degree for penetrating concrete is high, falls that slurry phenomenon is serious, and construction quality cannot ensure；And dust concentration is big, is harmful to construction
The health of personnel, therefore dry spray and tide spray work gradually replaced wet-spray technique.
In carrying out wet shotcreting construction, it is necessary to by concrete admixture, concrete can just firmly attach and applying
The Worker's Stadium surface.Existing technology is typically all to add liquid accelerator at spray head, at present on the market, although concrete is fast
The kind of solidifying agent is more, but the accelerator that can generate better effects for wet shotcreting is actually rare, often if mixed
The ratio of mud for coagulating soil is excessive, then concrete is easy isolation and viscosity is small, and a jet thickness is smaller or even can not wall built-up；If mixed
The ratio of mud for coagulating soil is too small, then mixing property of concrete difference and poor fluidity, are easy plugging, causes waste of material, and concrete sprays
Penetrate unstable quality.How configuring can be retained, and keep concrete flowability good, and can have corresponding adhesion strength, make to spray
It is low to penetrate concrete springback rate, is present Wet Shotcrete Technology technical problem urgently to be solved.
Theoretically, existing wet shot solves only concrete rapid curing with liquid accelerator and quickly improves intensity
Problem does not have the effect for increasing water conservation and adhesion strength.Therefore, to improve the above problem, both have it is necessary to research and develop one kind
There are water retention, and the concrete admixture with Efficient Adhesive Promotion, solves the problems, such as existing wet shotcreting.
But the Efficient Adhesive Promotion of common concrete viscosity increaser is general, be not able to satisfy wet shotcreting to high-moisture-retention and
The double requirements of high viscosity.Moreover, concrete in course of injection, due to the gravity of its own, often will cause coagulation
Native uneven and porosity is higher, the mechanical property after seriously affecting concrete hardening, and common tackifier are to raising coagulation
The effect of soil mechanics performance is not significant.
Summary of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of water conservation increasing for wet shotcreting
Viscous additive.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of water conservation thickening additive for wet shotcreting, including following component by weight:
Sodium Polyacrylate: 35-45 parts；
Organic polymer binder；45-55 parts；
Polyvinyl alcohol: 5-12 parts.
Since the ionic phenomenon of many anionic groups of Sodium Polyacrylate intramolecular makes molecule chain growth, viscosity increases, shape
At high-viscous solution, gel can be formed after being dissolved in water.The viscosity of Sodium Polyacrylate is not that water swelling generates, therefore gathers
The addition of sodium acrylate will not influence the water-retaining property and mobility of wet shotcreting, significantly improve concrete slurry viscosity
Meanwhile being still able to maintain lower concrete springback rate.
It is found through experiments that, the polyvinyl alcohol under this proportion can play good Water-saving effect.
Further, the organic polymer binder includes hydroxypropyl methyl cellulose, xanthan gum or sodium alginate.
Preferably, the organic polymer binder is hydroxypropyl methyl cellulose.When viscosity test, it have passed through several
The cooperations of different components is tested, after discovery cooperates Sodium Polyacrylate and hydroxypropyl methyl cellulose both components jointly,
Viscosity can reach synergistic effect, can improve the viscosity of concrete to greatest extent.In addition, adding hydroxypropyl in concrete slurry
After ylmethyl cellulose and polyvinyl alcohol, aggregate particle can be very good to be bonded, and then connect in micelle shape.
Bleeding and isolation when this can reduce concrete setting show, make it is concrete curing after more homogeneous, improve the power of concrete
Learn performance.
Further, a kind of water conservation for wet shotcreting viscosifies additive, further includes 1-4 by weight parts of carbonic acid
Sodium, sodium carbonate can increase the elasticity and ductility of concrete slurry, and in addition there are be conducive to concrete slurry to pump and reduce rebound.
Further, a kind of water conservation for wet shotcreting viscosifies additive, further includes 1-2 by weight parts of carbonic acid
Calcium reduces the available softer gel of calcium content, increases the available harder gel of calcium content.Excessive calcium is possible to lead
It causes local reaction too fast, causes to generate discontinuous gel or precipitation.Increase above-mentioned suitable calcium, will not generate discontinuous gel or
The case where precipitating, and slurry viscosity can be increased, and ultimately facilitate and increase the concrete strength after scleroma solidifies.
In use, the weight of the tackifier accounts for the 2%-6% of cement weight in concrete.
Further, a kind of water conservation for wet shotcreting viscosifies additive, further includes 60-200 by weight parts
Silicon powder.Concrete, due to jet impact force and the gravity of its own, often will cause concrete unevenness in course of injection
Uniform porosity is higher, the mechanical property after seriously affecting concrete hardening.This aspect is needed by increasing the viscous of concrete
Property improved, on the other hand, by adding silicon powder into tackifier, can while guaranteeing concrete viscosity, increase mix
The later strength of soil is coagulated, impervious and durability, and then the mechanical property of high concrete are improved.
In use, the weight of the tackifier accounts for the 6%-10% of cement weight in concrete.
The beneficial effects of the present invention are:
Wet shot coagulation on the one hand can be reduced since it is with good caking property and water-retaining property by addition tackifier
The rebound degree of soil avoids the waste of material so that jet quality is more stable；On the other hand, concrete slurry can be improved
Dispersibility and mobility, and then improve the uniformity of wet shotcreting, reduce porosity, the final power for improving wet shotcreting
Learn performance.
Tackifier in use, are added directly into cement grout and stir together, and construction is simple, easy to operate, and
It will not cause directly to contact with construction personnel, guarantee that construction personnel's is healthy and safe.
When tackifier are applied to construction site, one time spray-up thickness can reach 10cm, and rebound degree is reduced within 5%, and
And it is low in cost, there are extensive market prospects.
Specific embodiment
The present invention is described in detail below.
Embodiment 1:
A kind of water conservation thickening additive for wet shotcreting, is made of: polyacrylic acid following composition by weight
Sodium: 35 parts, 55 parts of hydroxypropyl methyl cellulose, 5 parts of polyvinyl alcohol.When mixing cement slurries, tackifier are introduced directly into water
It is stirred evenly together in slurry liquid.Tackifier account for 5% of cement weight in concrete.
Embodiment 2:
A kind of water conservation thickening additive for wet shotcreting, is made of: polyacrylic acid following composition by weight
Sodium: 45 parts, 45 parts of hydroxypropyl methyl cellulose, 12 parts of polyvinyl alcohol.When mixing cement slurries, tackifier are introduced directly into water
It is stirred evenly together in slurry liquid.Tackifier account for 2% of cement weight in concrete.
Embodiment 3:
A kind of water conservation thickening additive for wet shotcreting, is made of: polyacrylic acid following composition by weight
Sodium: 42 parts, 50 parts of hydroxypropyl methyl cellulose, 9 parts of polyvinyl alcohol, 4 parts of sodium carbonate, 2 parts of calcium carbonate.In the slurries that mix cement
When, tackifier are introduced directly into cement grout and are stirred evenly together.Tackifier account for 6% of cement weight in concrete.
Embodiment 4:
A kind of water conservation thickening additive for wet shotcreting, is made of: polyacrylic acid following composition by weight
Sodium: 38 parts, 52 parts of hydroxypropyl methyl cellulose, 8 parts of polyvinyl alcohol, 2 parts of sodium carbonate.When mixing cement slurries, by tackifier
It is introduced directly into cement grout and stirs evenly together.Tackifier account for 4% of cement weight in concrete.Tackifier are in this component
Under formula, effect is optimal.
Embodiment 5:
A kind of water conservation thickening additive for wet shotcreting, is made of: polyacrylic acid following composition by weight
Sodium: 40 parts, 50 parts of hydroxypropyl methyl cellulose, 7 parts of polyvinyl alcohol, 1 part of sodium carbonate, 1 part of calcium carbonate, 60 parts of silicon powder.It is stirring
When cement grout, tackifier are introduced directly into cement grout and are stirred evenly together.Tackifier account for cement weight in concrete
6%.
Embodiment 6:
A kind of water conservation thickening additive for wet shotcreting, is made of: polyacrylic acid following composition by weight
Sodium: 45 parts, 50 parts of xanthan gum, 12 parts of polyvinyl alcohol, 4 parts of sodium carbonate, 1 part of calcium carbonate, 200 parts of silicon powder.In the slurries that mix cement
When, tackifier are introduced directly into cement grout and are stirred evenly together.Tackifier account for 10% of cement weight in concrete.
Embodiment 7:
A kind of water conservation thickening additive for wet shotcreting, is made of: polyacrylic acid following composition by weight
Sodium: 45 parts, 50 parts of sodium alginate, 12 parts of polyvinyl alcohol, 4 parts of sodium carbonate, 1 part of calcium carbonate, 130 parts of silicon powder.In the slurry that mixes cement
When liquid, tackifier are introduced directly into cement grout and are stirred evenly together.Tackifier account for 8% of cement weight in concrete.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
A variety of modifications of embodiment will be readily apparent to those skilled in the art, it is as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention, not be described in detail
Part, be the prior art, herein without repeating.Therefore, the present invention is not intended to be limited to these implementations shown in this article
Example, and it is to fit to the widest scope consistent with principles disclosed herein and feature.
Claims (8)
1. a kind of water conservation for wet shotcreting viscosifies additive, which is characterized in that including following component by weight: poly-
Sodium acrylate: 35-45 parts；Xanthan gum or sodium alginate；45-55 parts；Polyvinyl alcohol: 5-12 parts.
2. a kind of water conservation for wet shotcreting according to claim 1 viscosifies additive, it is characterised in that: further include
1-4 by weight parts of sodium carbonate.
3. a kind of water conservation for wet shotcreting according to claim 2 viscosifies additive, it is characterised in that: further include
1-2 by weight parts of calcium carbonate.
4. a kind of water conservation for wet shotcreting according to claim 1 viscosifies additive, it is characterised in that: further include
1-2 by weight parts of calcium carbonate.
5. a kind of water conservation for wet shotcreting according to claim 1 or 4 viscosifies additive, it is characterised in that: institute
The weight for stating water conservation thickening additive accounts for the 2%-6% of cement weight in concrete.
6. a kind of water conservation for wet shotcreting according to claim 2 viscosifies additive, it is characterised in that: the guarantor
The weight of water thickening additive accounts for the 2%-6% of cement weight in concrete.
7. a kind of water conservation for wet shotcreting according to claim 1 viscosifies additive, it is characterised in that: further include
60-200 by weight parts of silicon powder.
8. a kind of water conservation for wet shotcreting according to claim 7 viscosifies additive, it is characterised in that: the guarantor
The weight of water thickening additive accounts for the 6%-10% of cement weight in concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375548.3A CN106082766B (en) | 2016-05-31 | 2016-05-31 | A kind of water conservation thickening additive for wet shotcreting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610375548.3A CN106082766B (en) | 2016-05-31 | 2016-05-31 | A kind of water conservation thickening additive for wet shotcreting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106082766A CN106082766A (en) | 2016-11-09 |
| CN106082766B true CN106082766B (en) | 2019-01-25 |
Family
ID=57230426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610375548.3A Active CN106082766B (en) | 2016-05-31 | 2016-05-31 | A kind of water conservation thickening additive for wet shotcreting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106082766B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821683A (en) * | 2018-07-09 | 2018-11-16 | 中国科学院武汉岩土力学研究所 | A kind of tunnel wet shot high-performance concrete material |
| CN109293277B (en) * | 2018-12-05 | 2021-10-22 | 湖南圣华节水科技股份有限公司 | Degradable concrete curing agent and preparation and application methods thereof |
| CN109694231B (en) * | 2019-02-22 | 2021-11-05 | 山东创能机械科技有限公司 | Phosphorus-magnesium-based cement guniting material and preparation method and application thereof |
| CN112125570A (en) * | 2020-08-28 | 2020-12-25 | 赵源 | Admixture for shotcrete and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234864A (en) * | 2008-02-28 | 2008-08-06 | 赵鲁波 | Building plastering mortar additive |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659445B (en) * | 2012-05-30 | 2014-12-31 | 湖北大学 | Foaming agent for preparation of Water-retaining foam concrete |
-
2016
- 2016-05-31 CN CN201610375548.3A patent/CN106082766B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234864A (en) * | 2008-02-28 | 2008-08-06 | 赵鲁波 | Building plastering mortar additive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106082766A (en) | 2016-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106082766B (en) | A kind of water conservation thickening additive for wet shotcreting | |
| CN103086638B (en) | Mortar additive and production process thereof | |
| CN105601158A (en) | Mortar additive | |
| CN107200497A (en) | A kind of chlorine-free alkali-free liquid accelerating agent and preparation method thereof | |
| CN104973832B (en) | Anti-crack mortar and preparation method therefor | |
| CN107698226A (en) | A kind of cement-silicate injecting paste material | |
| CN109437771A (en) | A kind of mining flexible hole-sealing grouting material | |
| CN104291733B (en) | Toughness reinforcing anti-migration agent and the toughness reinforcing cement of shale gas horizontal cementing for cement | |
| CN110372303A (en) | Anticorrosion mortar, method for preparing mortar and construction method are frozen in a kind of salt resistance | |
| CN110963732A (en) | Environment-friendly alkali-free liquid accelerator and normal-temperature preparation method thereof | |
| CN110451842A (en) | A kind of sprayed construction viscosity-adjusting agent admixture and preparation method thereof | |
| CN111663948B (en) | Water-rich sand-gravel stratum shield muck improvement additive and preparation method thereof | |
| CN105776998B (en) | A kind of repair way basal part solution cavity injecting paste material | |
| CN107555865B (en) | Seepage-proofing reinforcing paste resistant to water flow erosion | |
| JP2014152056A (en) | Liquid quick-setting agent, quick-settable cement concrete, and spray construction method using the same | |
| CN102503231B (en) | Mortar additive concentrate and preparation method thereof | |
| CN108863147A (en) | A kind of injecting paste material additive and its application | |
| CN103539416A (en) | Special novel shear-resistant mortar for synchronous grouting and preparation method thereof | |
| JP4044887B2 (en) | Bolt fixing method | |
| CN106746880A (en) | A kind of high-performance permeable concrete cementing agent and its application | |
| CN108911568B (en) | Grouting material additive and application thereof | |
| CN109502936A (en) | A kind of blowing-filling sludge solidified earth pumping admixture and preparation method thereof | |
| CN103787692A (en) | Protective seal curing agent as well as preparation method and application thereof | |
| CN101367634B (en) | Method of preparing mortar additive, mortar additive and method for preparing mortar by employing the same | |
| CN109748532A (en) | A kind of alkali-free quick-coagulant and the preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |