CN106082886B - Foamed cement injecting paste material is used in cavity filling after tunnel wall - Google Patents
Foamed cement injecting paste material is used in cavity filling after tunnel wall Download PDFInfo
- Publication number
- CN106082886B CN106082886B CN201610424309.2A CN201610424309A CN106082886B CN 106082886 B CN106082886 B CN 106082886B CN 201610424309 A CN201610424309 A CN 201610424309A CN 106082886 B CN106082886 B CN 106082886B
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- Prior art keywords
- foamed cement
- tunnel wall
- paste material
- injecting paste
- parts
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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
- 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
- C04B2103/42—Pore formers
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
Abstract
The invention discloses empty filling foamed cement injecting paste material after a kind of tunnel wall, it is made up by weight ratio of the raw material of following components：90 120 parts of Portland cement；25 35 parts of alumina cement；15 25 parts of powdered whiting；10 20 parts of aluminum sulfate；8 15 parts of foaming agent；23 parts of foam stabilizer；0.5 1.5 parts of thickener；80 100 parts of water.The foamed cement hardening time of the present invention, cured density are controllable, and cured density can maintain 0.8g~1.4g/m3Between, cured strength is high compared with regular-type foam cement, and good to the applicability of engineering, foam performance is good, crafters is uniform after solidification, and wall thickness is big, ensure that certain compression strength, bubbling efficiency is low to the sensitiveness of environment, can meet the foamed cement slip casting in various environment, and bubbling efficiency is secure.
Description
Technical field
The present invention relates to underground engineering filling injecting paste material field, and in particular to empty filling foam after a kind of tunnel wall
Cement injection material.
Background technology
Foamed cement is to reduce the density of cement mortar by being filled with the purpose of gas in cement mortar, 1978, the U.S.
The experiments such as people S.Yamada simultaneously successfully produce foamed cement, the eighties for the first time, and the filling technique of foamed cement has
Larger development, researcher improves foam maker, and by being improved to the formula of foamed cement, produces performance
Excellent foam slurry.
Foamed cement proportion is low, and structural viscosity is high, belongs to elasticity and viscoelastic medium, is flowed in rock crack, hole
When resistance it is very big, play the role of blocking channel.In view of this characteristic, foamed cement is injected in work progress to the cavity run into
Region can both meet requirement of the engineering for host rock environment, can substantially reduce construction costs again, therefore fill out in underground engineering
The field foamed cement of filling has a fabulous application prospect, but is ground at present dedicated for the foam injecting paste material of underground engineering filling
Hair is in the starting stage, and material property is uneven.
Current foamed cement, applied to when cavity is filled after tunnel wall, it is primarily present following shortcoming：
1. the cement solidification time is uncontrollable, lead to not the carry out constructing tunnel of efficient quality guaranteeing：Because tunnel support has
Time effect, when cement solidification overlong time, cement can not meet corresponding intensity requirement in setting time, can cause to apply
The potential safety hazard of work；When the cement solidification time is too short, on the one hand the cement of too fast solidification can hinder the filling of follow-up cement, separately
On the one hand it is unfavorable for the globality of filling cavity medium；Further, since empty scale, geological conditions after each tunnel wall and
The difference of regimen condition is assigned, the foam water that cement solidification time and empty situation match is needed to use for each tunnel cavity
Mud.But at present, the hardening time of foamed cement is fixed, it is impossible to meets the demand.
2. in the case of geological conditions is poor, cavity needs the higher foamed cement filling of density；And for geology bar
The preferable situation of part, cavity need the less foamed cement filling of density.Need to use phase according to different tunnel cavity situations
The foamed cement density of matching, the optimal of economy and security can be reached.But the density of current foamed cement is
Definite value, the demand can not be met.
3. tunnel working geology condition is extremely complex, filled media is also needed to sometimes and possesses higher mechanical property.And one
As foamed cement it is on the one hand higher to the sensitiveness of environment, the tunnel rear wall cavity filling that can not be applied under various environment；
Another aspect mechanical property cannot be guaranteed to meet corresponding requirements.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of foamed cement slip casting material of empty filling after tunnel wall
Material, the foamed cement gain in strength is very fast, density is controllable, green, have foaming efficient stable, construction environment adaptability compared with
The characteristics of good.
To achieve the above object, the present invention adopts the following technical scheme that：
Foamed cement injecting paste material is used in cavity filling after a kind of tunnel wall, is made by weight ratio by the raw material of following components
Into：
For the foamed cement injecting paste material of the present invention using powdered whiting as filler, powdered whiting is by natural magnesium
Salt mineral such as calcite, marble, lime stone, which are ground, to be formed, and is a kind of inorganic filler, has chemical purity height, inertia greatly, no
Chemically reactive reaction, heat endurance is good, will not be decomposed less than 400 DEG C, whiteness height, oil absorbency is low, index of refraction is low, matter is soft, it is dry,
Without the crystallization water, hardness is low, wearing valve is small, nontoxic, tasteless, odorless, good dispersion the advantages that.
Powdered whiting is stable in the air, is practically insoluble in water, insoluble in alcohol, because of its stable characteristic, added to bubble
It will not be reacted in foam cement with other materials, powdered whiting has wearing valve small simultaneously on the premise of soft
Feature, beneficial to the operation of slip casting, beneficial to being filled up completely with for cavity, anti-wear performance is good after solidification, long lifespan.Powdered whiting is not
Containing the crystallization water, good dispersion can water content that is dispersed in foamed cement and not interfering with foamed cement.
The present invention adds Portland cement and alumina cement simultaneously, is added on the basis of Portland cement high
Aluminium cement can be effectively increased aluminum ions concentration in this material, and aluminium ion is reacted with the main mineral constituent in cement,
Accelerate its aquation, hardening, so as to reach the purpose of rapid hardening, accelerate this condensation of materials speed, by the component for adjusting alumina cement
Content adjusts rate of set.
Further technical scheme is：The alumina cement selects CA50-6 type alumina cements, and its specific surface area is not less than
300m2Or 0.045mm is tailed over no more than 20%, alundum (Al2O3) content is between 50%~60%.The fineness of alumina cement is small,
Solubility is good, and alundum (Al2O3) content is high, improves aluminum ions concentration in product, is easy to control the rate of set of product.
Further technical scheme is：The powdered whiting is 325 mesh powdered whitings.325 mesh powdered whitings are most
It is suitably applied in building trade, powdered whiting is filled in foamed cement, can increase the volume of its product, is saved wherein
Expensive cement raw material, so as to substantially reduce production cost；, can be with addition, powdered whiting is filled in foamed cement
Increase the toughness and intensity of product
Further technical scheme is：The aluminum sulfate is 300 mesh white powder aluminum sulfate.Aluminum sulfate purity is high, thin
Spend small, soluble, solubility of the aluminum sulfate in reaction can be improved, reduce influence of the impurity to product.
Further technical scheme is：The foaming agent by α-sodium olefin sulfonate (AOS) and alkyl polyglycoside (APG) mixing and
Into.The foaming agent is compounding foaming agent, is mainly made up of environmentally-friendly surfactant, without noxious material such as benzene, formaldehyde
Deng peculiar smell will not be produced, and without hard-degraded substance, product in the environment can degradable (biodegradable component invariably, degradation rate be
100%), environment is had no effect, belongs to environmentally friendly foaming agent, reaches green effect.
Further technical scheme is：α-the sodium olefin sulfonate is not less than 92% powdered α-alkene using AOS contents
Base sodium sulfonate, the alkyl polyglycoside is pulverulent solids, and in off-white color or slightly yellow, α-sodium olefin sulfonate and alkyl polyglycoside are mixed
Amount is than being 4:1.The addition ratio can ensure that α-sodium olefin sulfonate is main foaming agent, and alkyl polyglycoside plays a part of auxiliary foaming,
The foam performance of α-sodium olefin sulfonate is better than alkyl polyglycoside, foaming agent is had superior foam performance.
Further technical scheme is：The foam stabilizer uses granular polyethylene glycol oxide (PEO350).It is granular
The good dispersion of polyethylene glycol oxide in the product, foam stabilizing effect is realized by thickening.
Further technical scheme is：The thickener uses powdered glycine betaine.The present invention the final form of product be
Powdered, using powdered glycine betaine as thickener, the uniformity being distributed in product is more preferable, lifts its effect.
The invention has the advantages that：
1st, this foamed cement with the addition of alumina cement and aluminum sulfate in Portland cement, add normal silicate
Aluminum ions content in cement, aluminium ion are reacted with the main mineral constituent in cement, accelerate its aquation, hardening, can be with
The rate of set of effective regulation Portland cement, by adjusting alumina cement and aluminum sulfate in Portland cement
Content realizes that hardening time is controllable, hardening time can be adjusted by way of adjusting retarder according to the needs of different engineerings, Gu
The more general foamed cement of intensity is high after change.
2nd, by adjusting the content of foaming agent, while aerating amount when changing construction is coordinated, thus it is possible to vary expansion ratio, from
And realize that density is controllable, 0.8g~1.4g/m can be achieved3Cured density, it is good to the applicability of engineering, different engineerings can be directed to
It is adjusted；
3rd, this foamed cement foam performance is good, added with foam stabilizer, is found by many experiments, by increasing foam stabilizer
Content, crafters can be made to diminish, become uniform, increase the wall thickness of crafters, so that crafters is uniform after solidification, wall thickness is big,
While lightweight is realized, certain compression strength ensure that；
4th, foaming agent of the invention is mixed by α-sodium olefin sulfonate (AOS) and alkyl polyglycoside (APG), the foaming agent pair
The adaptability of hard water is good, and the foam performance in hard water is barely affected, and bubbling efficiency is low to the sensitiveness of environment, can meet
Foamed cement slip casting in various environment, bubbling efficiency are secure；
5th, foaming agent of the invention is to compound foaming agent, expanded material category green material, mainly by environmentally friendly
Surfactant forms, and without noxious material such as benzene, formaldehyde etc., will not produce peculiar smell, without hard-degraded substance, can foam
Into rear rapid degraded, the influence to environment is extremely low.
Embodiment
With reference to embodiment, the present invention is further described.
Embodiment 1
Foamed cement injecting paste material is used in cavity filling after a kind of tunnel wall, is made by weight ratio by the raw material of following components
Into：
Embodiment 2
Foamed cement injecting paste material is used in cavity filling after a kind of tunnel wall, is made by weight ratio by the raw material of following components
Into：
Embodiment 3
Foamed cement injecting paste material is used in cavity filling after a kind of tunnel wall, is made by weight ratio by the raw material of following components
Into：
Embodiment 4
Foamed cement injecting paste material is used in cavity filling after a kind of tunnel wall, is made by weight ratio by the raw material of following components
Into：
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not the whole embodiments of the present invention, not limiting
The system present invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in
Within protection scope of the present invention.
In addition to technical characteristic described in specification, remaining technical characteristic is technology known to those skilled in the art, in order to prominent
Go out the innovative characteristicses of the present invention, above-mentioned technical characteristic will not be repeated here.
Claims (7)
1. after a kind of tunnel wall cavity filling use foamed cement injecting paste material, it is characterized in that, by following components raw material by weight
Proportioning is made：
Wherein, the foaming agent is mixed by α-sodium olefin sulfonate and alkyl polyglycoside.
2. foamed cement injecting paste material is used in cavity filling after tunnel wall according to claim 1, it is characterized in that, the high alumina
Cement selection CA50-6 type alumina cements, its specific surface area are not less than 300m2Or 0.045mm is tailed over no more than 20%, three oxidation
Two aluminium contents are between 50%~60%.
3. foamed cement injecting paste material is used in cavity filling after tunnel wall according to claim 1, it is characterized in that, the heavy
Calcium carbonate is 325 mesh powdered whitings.
4. foamed cement injecting paste material is used in cavity filling after tunnel wall according to claim 1, it is characterized in that, the sulfuric acid
Aluminium is 300 mesh white powder aluminum sulfate.
5. foamed cement injecting paste material is used in cavity filling after tunnel wall according to claim 1, it is characterized in that, the α-alkene
Base sodium sulfonate is not less than 92% powdered α-sodium olefin sulfonate using AOS contents, and the alkyl polyglycoside is pulverulent solids, is in
Off-white color is slightly yellow, and the addition ratio of α-sodium olefin sulfonate and alkyl polyglycoside is 4:1.
6. foamed cement injecting paste material is used in cavity filling after tunnel wall according to claim 1, it is characterized in that, the foam stabilizing
Agent uses granular polyethylene glycol oxide.
7. foamed cement injecting paste material is used in cavity filling after tunnel wall according to claim 1, it is characterized in that, the thickening
Agent uses powdered glycine betaine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610424309.2A CN106082886B (en) | 2016-06-14 | 2016-06-14 | Foamed cement injecting paste material is used in cavity filling after tunnel wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610424309.2A CN106082886B (en) | 2016-06-14 | 2016-06-14 | Foamed cement injecting paste material is used in cavity filling after tunnel wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106082886A CN106082886A (en) | 2016-11-09 |
| CN106082886B true CN106082886B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610424309.2A Active CN106082886B (en) | 2016-06-14 | 2016-06-14 | Foamed cement injecting paste material is used in cavity filling after tunnel wall |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106517972B (en) * | 2016-11-24 | 2019-04-26 | 北京宝辰联合科技股份有限公司 | A kind of foamed cement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060082A (en) * | 1990-09-27 | 1992-04-08 | 广东省煤炭工业研究所 | Foamed cement |
| CN103030418A (en) * | 2011-10-08 | 2013-04-10 | 江苏金贸新材料科技有限公司 | Low-density composite foaming cement and preparation method thereof |
| CN103304260A (en) * | 2013-06-18 | 2013-09-18 | 上海宝冶工程技术有限公司 | Foamed concrete heat preservation plate and preparation method thereof |
| CN103601455A (en) * | 2013-11-29 | 2014-02-26 | 邹金峰 | Grouting material with controllable rapid hardening time and preparation method thereof |
| CN105585295A (en) * | 2015-12-22 | 2016-05-18 | 中交第一公路勘察设计研究院有限公司 | Light grouting material for grouting treatment of highway goaf and preparation method of light grouting material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100804682B1 (en) * | 2006-09-05 | 2008-02-18 | 서경원 | Mortar with hybrid fibers and method for construction using the same |
-
2016
- 2016-06-14 CN CN201610424309.2A patent/CN106082886B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060082A (en) * | 1990-09-27 | 1992-04-08 | 广东省煤炭工业研究所 | Foamed cement |
| CN103030418A (en) * | 2011-10-08 | 2013-04-10 | 江苏金贸新材料科技有限公司 | Low-density composite foaming cement and preparation method thereof |
| CN103304260A (en) * | 2013-06-18 | 2013-09-18 | 上海宝冶工程技术有限公司 | Foamed concrete heat preservation plate and preparation method thereof |
| CN103601455A (en) * | 2013-11-29 | 2014-02-26 | 邹金峰 | Grouting material with controllable rapid hardening time and preparation method thereof |
| CN105585295A (en) * | 2015-12-22 | 2016-05-18 | 中交第一公路勘察设计研究院有限公司 | Light grouting material for grouting treatment of highway goaf and preparation method of light grouting material |
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| Publication number | Publication date |
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| CN106082886A (en) | 2016-11-09 |
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