CN103880372B - For the cement based grouting material of reinforcing and repairing, its preparation method and application thereof - Google Patents
For the cement based grouting material of reinforcing and repairing, its preparation method and application thereof Download PDFInfo
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- CN103880372B CN103880372B CN201410076647.2A CN201410076647A CN103880372B CN 103880372 B CN103880372 B CN 103880372B CN 201410076647 A CN201410076647 A CN 201410076647A CN 103880372 B CN103880372 B CN 103880372B
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Abstract
The present invention relates to a kind of cement based grouting material for reinforcing and repairing, its preparation method and application thereof.Described cement based grouting material, by mass parts, comprises: cement 300 ~ 500 parts; Adulterant 200 ~ 300 parts; Filler 300 ~ 400 parts; Diminishing component 3 ~ 6 parts; Plastic expansion component 0.1 ~ 1 part; Expansion component 10 ~ 20 parts after sclerosis; Stablize component 0.01 ~ 0.2 part; Accelerating component 1 ~ 4 part; Froth breaking component 0.2 ~ 2 part; Emulgate ingredient 0.01 ~ 0.2 part.Cement based grouting material of the present invention has higher pressure injection, and initial flow degree≤17s, barrier properties is no more than 1mm, and fastness to rubbing is no more than 10cm
3/ cm
2, 2h ultimate compression strength is not less than 5MPa, and 1d ultimate compression strength is not less than the feature performance benefits such as 30MPa; Have composite expanded, 3h degree of free swelling is 0.02 ~ 2%, and slip casting is full closely knit; Viscosity is low, the good good endurance of volume stability; Not containing VOC, environmental protection.
Description
Technical field
The invention belongs to building material technology Application Areas, relate to a kind of be applicable to reinforcing and repairing cement based grouting material, its preparation method and application thereof.This cement based grouting material is applicable to the pit shaft slip casting in the field such as mine and colliery, and this material also can be applicable to zone of weathering, rock stratum grouting and reinforcing and Concrete Engineering Cracks and repairs.
Background technology
The water damage in the field such as mine, colliery is one of major casualty of safety in production, the karsts developing area of bottom, northern China stratum limestone, once be subject to mining influence, serious mine water disaster problem may be there is, gushing water amount is per hour from hundreds of cube to tens thousand of cubes, very easily causes serious security incident.Under deep crack rock is in the hydrogeological conditions of negative value, existing crack osmotic grouting material is difficult to meet the demands, can not guide field grouting process.
Therefore, national correlation department compares attention to this field, also have developed similar injecting paste material.One class is chemical grout, there is good stability, the property noted is strong, viscosity is low, gel time easily controls and can pour into the advantages such as narrow and small crack, common chemical grout has acrylic amide, urea-formaldehyde resin class, polyurethanes and epoxy resin etc., but its shortcoming is not environmentally, and cost is high.Another kind of is cement plasmoid humor, current many be cement list liquid, cement-silicate biliquid etc.
Chinese patent literature 200910091507.1 discloses a kind of pre-grouting from the surface reinforcing quick-setting early strength cement slurries, and initial viscosity is low, good fluidity, but slurry viscosity increases fast, and water resistant dilution capacity is strong, and time of coagulation is short, and early stage consolidating strength is high.
Chinese patent literature 201010599615.2 discloses a kind of single component hydrophilic polyurethane grouting material and its raw material and preparation method, has and does not use volatile organic solvent, and has single fluid grouting, meets the features such as water rapid reaction sealing.
Chinese patent literature 201110029290.9 discloses a kind of cement-based grouting material for ground source heat pump, has excellent flowing property, flowing retention and closely knit performance, is convenient to filling grouting compacting.
Chinese patent literature 201110243559.3 discloses a kind of fast hard self-compacting anti-cracking high-performance grouting material that can be used for the salvaging of urban road inspection chamber, add water and stir, water and injection material dry blend weight ratio are 0.14 ~ 0.18, have cracking resistance, self-compacting, fast hard, weather resistance, the adhesive property good with interface and volume stability.
Chinese patent literature 201210002291.9 discloses a kind of urethane grouting for water-blocking-reinforcement material and preparation method and using method, comprise two kinds of components, component A is polyether glycol and auxiliary material, B component is isocyanic ester or its pre-composition, for slip casting-water reinforcement, speed of response is very fast, and 20s starts reaction, 90s terminates substantially, and the reaction times is adjustable according to project situation.
Domestic appearance is formulated about the unified standard standard of grouting and reinforcing at present, and all according to company standard or local regulation execution, performance index are uneven.Be mainly manifested in: (1) poor fluidity, early strength is low; (2) only have late expansion, the full property of slip casting is poor; (3) shrink high, the volume stability in later stage and poor durability; (4) viscosity is high, not easily disperses; (5) organic injecting paste material not environmentally.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of cement based grouting material for reinforcing and repairing.By various component through premix, after mixing, cement based slurry formulated under 0.26 ~ 0.28 ratio of water to material condition can reach initial flow degree and be less than 17s, and half an hour, degree of mobilization was less than 20s, and barrier properties is no more than 1mm, and fastness to rubbing is no more than 10cm
3/ cm
2, 2h ultimate compression strength is not less than 5MPa, and 1d ultimate compression strength is not less than the performance requriementss such as 30MPa.Injecting paste material can be squeezed into crack by the pressure that grouting pump is being not less than 0.5MPa during construction application, realize reinforcing water blockoff, the object in mending concrete crack.
Another object of the present invention is to the preparation method that the above-mentioned cement based grouting material for reinforcing and repairing is provided.
An also object of the present invention is the application providing the above-mentioned cement based grouting material for reinforcing and repairing.
To achieve these goals, the present invention adopts following technical scheme:
Cement based grouting material for reinforcing and repairing of the present invention, is characterized in that, by mass parts, described cement based grouting material comprises:
In a preferred embodiment of the present invention, the cement based grouting material for reinforcing and repairing of the present invention, is characterized in that, by mass parts, described cement based grouting material comprises:
In the present invention, described cement is that intensity is not less than 42.5MPa, specific surface area is not less than 450cm
2one or more in the ordinary Portland cement of/g, silicate cement and aluminosulfate cement;
Described adulterant be not less than in 1250 object superfined flyashs and ultra-fine wollastonite powder one or both;
Described filler is one or more in talcum powder, steel-making slag powder, kaolin and coarse whiting;
Described diminishing component is one or both in polycarboxylate water-reducer and melamine water reducing agent;
Described plastic expansion component is one or more in sodium bentonite, alum, gac and aluminium powder;
After described sclerosis, expansion component is one or more in ettringite class swelling agent, calcium oxide expansion agents, magnesium oxide class swelling agent and porous zeolite class swelling agent;
Described stable component be 20 DEG C of viscosity be no more than in the ether of cellulose of 1000cps, starch ethers and xanthan gum one or more;
Described accelerating component is one or more in inorganic silicate hardening accelerator, inorganic carbonate hardening accelerator and formate hardening accelerator;
Described froth breaking component is one or more in organo-siloxane defoamer, polyethers defoamer and amides defoamer;
Described emulgate ingredient is one or more of alkylphenol polyoxyethylene class tensio-active agent, Ben-zylphenol Polyoxyethyl Ether class surface dispersant and alkylsulfonate.
According to a further aspect in the invention, the preparation method of the above-mentioned cement based grouting material for reinforcing and repairing is provided, described method comprises: by cement, adulterant, filler, diminishing component, plastic expansion component, the rear expansion component of sclerosis, stablize component, accelerating component, froth breaking component and emulgate ingredient by respective mass parts input stirrer, continuous mix and blend 5 ~ 10 minutes, obtains the cement based grouting material for reinforcing and repairing of the present invention.
According to another aspect of the invention, the application of the above-mentioned cement based grouting material for reinforcing and repairing is provided, comprise: described cement based grouting material is according to ratio of water to material 0.26 ~ 0.28, in stirrer, described cement based grouting material blunge is even, adopt pump pressure to be not less than the grouting pump of 0.5MPa by uniform for mix slurry press-in crack or crack.
In above-mentioned preparation method and application, preferably, the linear velocity of stirrer is not less than 2.5m/s, can obtain finely dispersed injecting paste material.
The invention has the beneficial effects as follows:
(1) the present invention adopts multiple composition of concrete admixture technology, such that the injecting paste material be mixed with has higher pressure injection (initial flow degree≤17s), barrier properties is no more than 1mm, and fastness to rubbing is no more than 10cm
3/ cm
2, 2h ultimate compression strength is not less than 5MPa, and 1d ultimate compression strength is not less than the feature performance benefits such as 30MPa.
(2) the present invention adopts plastic expansion component and the rear expansion component compounding technology of sclerosis, the cement slurry be mixed with is made to have excellent early expansion performance (3h degree of free swelling is 0.02 ~ 2%), also there is microdilatancy to a certain degree in later stage, ensure that the full property of slip casting.
(3) superfine powder that adopts of the present invention, that had both improved slurry can application property, again reduces contraction, increases the cohesive strength with basis, ensure that volume stability and the weather resistance of injecting cement paste.
(4) viscosity of injecting paste material of the present invention is lower, and the stirrer adopting linear velocity to be not less than 2.5m/s can obtain good dispersion effect.
(5) injecting paste material of the present invention is not containing VOC, belongs to environmental friendliness shaped material; And it is good with base concrete adaptability.Cement based slurry of the present invention is applicable to the pit shaft slip casting in the field such as mine and colliery, also can be applicable to zone of weathering, rock stratum grouting and reinforcing and Concrete Engineering Cracks and repairs.
Embodiment
Set forth the present invention further below in conjunction with specific embodiment, below each embodiment only for illustration of the present invention protection scope of the present invention by the restriction of these embodiments.Wherein, performance test methods is pressed existing national standards " cement-based grouting material utilisation technology specification " GB/T50448-2008 and " inorganic earth material wear resistance test method " GB/T12988-2009 and is performed.
Embodiment 1
Each component proportion is as follows:
Silicate cement (Qian Ye cement mill, Qinhuangdao P I, intensity 42.5MPa, specific surface area 450cm
2/ g)
300 parts,
Fineness is 1250 object superfined flyash 200 parts,
Coarse whiting 400 parts,
Polycarboxylate water-reducer 5 parts,
Gac 0.1 part,
Calcium oxide swelling agent (Zhengzhou Zheng Sen type material company model ZS) 15 parts,
Ether of cellulose (DOW Chemical MKW4000PF, 20 DEG C of viscosity 400cps) 0.1 part,
Calcium formiate (the strange chemical industry in Shanghai) 2 parts,
Organo-siloxane defoamer (German munzing-chemie company P803) 1 part,
Dodecyl phenol polyethenoxy ether (Hai'an, Jiangsu chemical industry OP-15) 0.02 part,
Above-mentioned each component is dropped into by its mass parts in the stirrer of model JS-500, continuously stirring mixing 5 ~ 10 minutes, obtained uniformly for the cement based grouting material 1 of reinforcing and repairing.
Be 0.28 by obtained injecting paste material 1 according to ratio of water to material, adopt planetary cement mortar mixer that cement based grouting material 1 blunge is even, stir, normal curing.
Injecting paste material 1 the performance test results is as follows: initial flow degree 16s, barrier properties 0.5mm, fastness to rubbing 8cm
3/ cm
2, 2h ultimate compression strength 7.5MPa, 1d ultimate compression strength 35.0MPa, 28d ultimate compression strength 78.4MPa.
When using injecting paste material 1 construction application, injecting paste material 1 stirs with the stirrer of hydromining linear velocity 2.5m/s, is pressed in the crack or crack carrying out closed measure immediately, realizes shutoff with the grouting pump of pump pressure 0.5MPa.
Embodiment 2
Each component proportion is as follows:
Ordinary Portland cement (cement mill, Handan Taihang board PO42.5R) 200 parts,
Aluminosulfate cement (42.5 grades, polar bear cement mill, Tangshan polar bear board) 300 parts
Fineness 1500 object superfined flyash 200 parts,
Steel-making slag powder 300 parts
Polycarboxylate water-reducer 6 parts,
Gac 0.2 part,
MgO expansion agent (Tianjin Bao Ming limited-liability company) 20 parts,
Starch ethers (German munzing-chemie company 235) 0.2 part,
Water glass (sharp chemical industry is gathered in Yongqing) 1 part,
Organo-siloxane defoamer (German munzing-chemie company P801) 0.8 part,
Polyoxyethylene nonylphenol ether (Hai'an, Jiangsu chemical industry SOP-20) 0.03 part,
Above-mentioned each component is dropped into by its mass parts in the stirrer of model JS-500, continuously stirring mixing 5 ~ 10 minutes, obtained uniformly for the cement based grouting material 2 of reinforcing and repairing.
Be 0.26 by obtained injecting paste material 2 according to ratio of water to material, adopt planetary cement mortar mixer that cement based grouting material 2 blunge is even, stir, normal curing.
Injecting paste material 2 the performance test results is as follows: initial flow degree 15s, and 3h degree of free swelling is 0.1%, barrier properties 0.3mm, fastness to rubbing 6cm
3/ cm
2, 2h ultimate compression strength 9.0MPa, 1d ultimate compression strength 40.2MPa, 28d ultimate compression strength 85.7MPa.
When using injecting paste material 2 construction application, injecting paste material 2 stirs with the stirrer of hydromining linear velocity 2.8m/s, is pressed in the crack or crack carrying out closed measure immediately, realizes shutoff with the grouting pump of pump pressure 0.7MPa.
Embodiment 3
Each component proportion is as follows:
Aluminosulfate cement (42.5 grades, polar bear cement mill, Tangshan polar bear board) 300 parts,
Fineness is 1500 object superfined flyash 100 parts,
Fineness is the ultra-fine wollastonite powder of 1500 object 150 parts,
Kaolin 400 parts,
Melamine water reducing agent 4 parts,
Aluminium powder 0.5 part,
Ettringite swelling agent (Tianjin Bao Ming limited-liability company UEA) 7 parts,
8 parts, zeolite (Jiade, Qingdao filtrate company limited)
Xanthan gum (20 DEG C of viscosity 800cps) 0.1 part,
Quilonum Retard 2 parts,
Organo-siloxane defoamer (German munzing-chemie company P801) 1.2 parts,
Polyoxyethylene nonylphenol ether (Hai'an, Jiangsu chemical industry SOP-20) 0.05 part,
Above-mentioned each component is dropped into by its mass parts in the stirrer of JS-500 model, continuously stirring mixing 5 ~ 10 minutes, obtained uniformly for the cement based grouting material 3 of reinforcing and repairing
Be 0.27 by obtained injecting paste material 3 according to ratio of water to material, adopt planetary cement mortar mixer that cement based grouting material 3 blunge is even, stir, normal curing.
Injecting paste material 3 the performance test results is as follows: initial flow 16s, 3h degree of free swelling is 0.15%, barrier properties 0.4mm, fastness to rubbing 7cm
3/ cm
2, 2h ultimate compression strength 8.5MPa, 1d ultimate compression strength 39.2MPa, 28d ultimate compression strength 81.6MPa.
When using injecting paste material 3 construction application, injecting paste material 3 stirs with the stirrer of hydromining linear velocity 2.6m/s, is pressed in the crack or crack carrying out closed measure immediately, realizes shutoff with the grouting pump of pump pressure 0.6MPa.
Embodiment 4
For the preparation of in the cement based grouting material 4 of reinforcing and repairing, except adopted silicate cement is intensity 42.5MPa, specific surface area 500cm
2outside the silicate cement of/g, other component, consumption are identical with embodiment 1, and obtain injecting paste material 4 in the same way.
Be 0.28 with water according to ratio of water to material by obtained injecting paste material 4, adopt planetary cement mortar mixer that cement based grouting material 4 blunge is even, stir, normal curing.
Injecting paste material 4 the performance test results is as follows: initial flow degree 16s, barrier properties 0.4mm, fastness to rubbing 7cm
3/ cm
2, 2h ultimate compression strength 7.8MPa, 1d ultimate compression strength 36.4MPa, 28d ultimate compression strength 80.1MPa.
When using injecting paste material 4 construction application, injecting paste material 4 stirs with the stirrer of hydromining linear velocity 2.5m/s, is pressed in the crack or crack carrying out closed measure immediately, realizes shutoff with the grouting pump of pump pressure 0.5MPa.
Embodiment 5
For the preparation of in the cement based grouting material 5 of reinforcing and repairing, be that except 1500 object superfined flyashs, other component, consumption are identical with embodiment 1 except adopted superfined flyash is fineness, and obtain injecting paste material 5 in the same way.
Be 0.27 by obtained injecting paste material 5 according to ratio of water to material, adopt planetary cement mortar mixer that cement based grouting material 5 blunge is even, stir, normal curing.
Injecting paste material 5 the performance test results is as follows: initial flow degree 16.5s, barrier properties 0.5mm, fastness to rubbing 7.5cm
3/ cm
2, 2h ultimate compression strength 7.0MPa, 1d ultimate compression strength 34.9MPa, 28d ultimate compression strength 76.8MPa.
When using injecting paste material 5 construction application, injecting paste material 5 stirs with the stirrer of hydromining linear velocity 2.6m/s, is pressed in the crack or crack carrying out closed measure immediately, realizes shutoff with the grouting pump of pump pressure 0.75MPa.
Embodiment 6
For the preparation of in the cement based grouting material 6 of reinforcing and repairing, be except the ether of cellulose of 850cps except adopted ether of cellulose is 20 DEG C of viscosity, other component, consumption are identical with embodiment 1, and obtained injecting paste material 6 in the same way.
Be 0.26 by obtained injecting paste material 6 according to ratio of water to material, adopt planetary cement mortar mixer that cement based grouting material 6 blunge is even, stir, normal curing.
Injecting paste material 6 the performance test results is as follows: initial flow degree 16s, barrier properties 0.3mm, fastness to rubbing 6cm
3/ cm
2, 2h ultimate compression strength 8.2MPa, 1d ultimate compression strength 37.5MPa, 28d ultimate compression strength 81.2MPa.
When using injecting paste material 6 construction application, injecting paste material 6 stirs with the stirrer of hydromining linear velocity 2.7m/s, is pressed in the crack or crack carrying out closed measure immediately, realizes shutoff with the grouting pump of pump pressure 0.75MPa.
As mentioned above, embodiments of the invention have been described in detail, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also contained within protection scope of the present invention.
Claims (7)
1. for a cement based grouting material for reinforcing and repairing, it is characterized in that, by mass parts, described cement based grouting material is composed as follows:
Wherein, described adulterant be not less than in 1250 object superfined flyashs and ultra-fine wollastonite powder one or both;
Described filler is one or more in talcum powder, steel-making slag powder, kaolin and coarse whiting;
Described diminishing component is one or both in polycarboxylate water-reducer and melamine water reducing agent;
Described accelerating component is one or more in inorganic silicate hardening accelerator, inorganic carbonate hardening accelerator and formate hardening accelerator;
Described plastic expansion component is one or more in sodium bentonite, alum, gac and aluminium powder;
After described sclerosis, expansion component is one or more in ettringite class swelling agent, calcium oxide expansion agents, magnesium oxide class swelling agent and porous zeolite class swelling agent; And
Described stable component be 20 DEG C of viscosity be no more than in the ether of cellulose of 1000cps, starch ethers and xanthan gum one or more.
2. the cement based grouting material for reinforcing and repairing according to claim 1, is characterized in that, by mass parts, described cement based grouting material is composed as follows:
3. the cement based grouting material for reinforcing and repairing according to claim 1 and 2, is characterized in that, described cement is that intensity is not less than 42.5MPa, specific surface area is not less than 450cm
2one or more in the ordinary Portland cement of/g, silicate cement and aluminosulfate cement.
4. the cement based grouting material for reinforcing and repairing according to claim 1 and 2, is characterized in that, described froth breaking component is one or more in organo-siloxane defoamer, polyethers defoamer and amides defoamer.
5. the cement based grouting material for reinforcing and repairing according to claim 1 and 2, it is characterized in that, described emulgate ingredient is one or more of alkylphenol polyoxyethylene class tensio-active agent, Ben-zylphenol Polyoxyethyl Ether class surface dispersant and alkylsulfonate.
6. the preparation method of the cement based grouting material for reinforcing and repairing according to any one of claim 1 to 5, described method comprises: by cement, adulterant, filler, diminishing component, plastic expansion component, the rear expansion component of sclerosis, stablize component, accelerating component, froth breaking component and emulgate ingredient by respective mass parts input stirrer, continuous mix and blend 5 ~ 10 minutes, obtains the cement based grouting material for reinforcing and repairing.
7. the application of the cement based grouting material for reinforcing and repairing according to any one of claim 1 to 5, comprise: described cement based grouting material is according to ratio of water to material 0.26 ~ 0.28, in stirrer, described cement based grouting material blunge is even, adopt pump pressure to be not less than the grouting pump of 0.5MPa by uniform for mix slurry press-in crack or crack.
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|---|---|---|---|---|
| CN103482926A (en) * | 2013-09-02 | 2014-01-01 | 苏州科技学院 | Cement-based no-shrinkage grouting material |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103482926A (en) * | 2013-09-02 | 2014-01-01 | 苏州科技学院 | Cement-based no-shrinkage grouting material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106278022A (en) * | 2016-08-08 | 2017-01-04 | 福建永强岩土股份有限公司 | A kind of formula of foundation treatment engineering mixed serum and preparation method thereof |
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| CN103880372A (en) | 2014-06-25 |
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