CN104609814B - Anti-aqueous dispersion synchronous grouting material with large specific gravity and low consistence - Google Patents
Anti-aqueous dispersion synchronous grouting material with large specific gravity and low consistence Download PDFInfo
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Abstract
The invention discloses an anti-aqueous dispersion synchronous grouting material with large specific gravity and low consistence. The anti-aqueous dispersion synchronous grouting material consists of the following components in parts by weight: 100 parts of coal ash, 10-30 parts of slaked lime, 5-20 parts of cement, 10-50 parts of phosphorus gypsum, 0-200 parts of machine-made sand, 200-400 parts of shield mud and sand, 0.1-0.5 part of a water reducing agent, 0.05-0.2 part of a thickening agent and 80-120 parts of water. The shield mud and sand is used for replacing river sand and bentonite in a traditional grouting material, and the shield mud and sand and machine-made sand are taken as fine aggregates, so that the problem of resource shortage for natural sand is solved; moreover, the coal ash discharged at a power station and the phosphorus gypsum produced at a phosphorus chemical plant are reasonably utilized, so that the resource utilization of industrial waste is realized. The grouting material has the characteristics of good filling property, long castable time, large specific gravity, low consistence, anti-aqueous dispersion performance, segment floating prevention and the like, is prominent in environmental protection performance and low in cost, and can be widely applied to the shield segment grouting engineering and the like.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of big proportion low denseness water resistant dispersion synchronous grouting material and preparation thereof
Method.
Background technology
Synchronous grouting is the important process in tunneling shield construction, plays and " controls tunnel duct piece to float, reduce surface subsidence, guarantee
Stability Analysis of Structures " effect, be requisite link in tunnel piercing.But the existence of common synchronization injecting paste material is difficult to uniformly fill
Around section of jurisdiction, water resistant bad dispersibility, easily isolate under the conditions of high-pressure water-enriched, the problem such as layering, affect slurry the property noted,
Intensity and durability, and readily flow to bottom section of jurisdiction, cause section of jurisdiction vault void to fill out, float, it is impossible to effectively control ground settlement etc. and ask
Topic.
In tunneling shield construction tunneling process, excavate out a large amount of silt (shield digging sand).These shield digging sands not only account for
By construction site, difficult treatment, and construction speed can be directly affected, it has also become the one of constructing tunnel and environmental conservation bears greatly.
How shield digging sand is carried out the emphasis rationalizing recycling by becoming future tunnel construction.In recent years, should various bases
The demand of Infrastructure and construction scale expanding day, the demand such as concrete, mortar increases severely, accounts for the Aggregate of volume 70%
Consumption is in sustainable growth, and existing natural sand resource is difficult to ensure that China's infrastructure construction.The natural sand resource in many areas is the nearest
Exhaustion, the most a lot of places have begun to taboo and adopt or limit and adopt natural sand, and engineering sand imbalance between supply and demand becomes increasingly conspicuous, and certain areas are very
To using without natural sand, directly affect engineering progress.The appearance of Machine-made Sand is possible not only to solve the problem that fluvial sand is deficient, reduces work
Journey cost, moreover it is possible to realize its mechanization production, controls all technical in the ideal range.Therefore, Machine-made Sand is than sky
So chiltern amount is more easy to control.The research replacing fluvial sand for this Machine-made Sand becomes the most important with application.
Additionally, the ardealite that discharges every year of China, the quantity of flyash equal industrial residue occupy the first in the world, these waste residues are not only
Occupied ground, difficult treatment, and easily cause the pollution to air, subsoil water and soil environment, the place to these industrial residues
Reason always numerous scholars put forth effort the Important Problems solved.
Summary of the invention
It is an object of the invention to provide a kind of big proportion low denseness water resistant dispersion synchronous grouting material, it is big, thick that this slurry has density
Angle value is low, the features such as duct piece float upward are disperseed and prevented to water resistant, and the preparation method related to is simple, can effectively solve tradition fluvial sand money
Source is nervous, and the recycling problem of the industrial residue such as flyash, ardealite.
For achieving the above object, the technical solution used in the present invention is:
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight: 100 parts of flyash, phosphorus
Gypsum Fibrosum 10～50 parts, cement 5～20 parts, Calx 10～30 parts, shield silt particle 200～400 parts, Machine-made Sand 0～200,
Water reducer 0.1～0.5 part, thickening agent 0.05～0.2 part, water 80～120 parts.
In such scheme, each component parts by weight are: 100 parts of flyash, ardealite 20～40 parts, and cement 5～10 parts are ripe
Calx 15～30 parts, shield silt particle 200～400 parts, Machine-made Sand 100～200 parts, water reducer 0.1～0.3 part, thickening agent
0.1～0.2 part, water 90～120 parts.
In such scheme, described flyash is II level ash, and its Blain specific surface is more than 350m2/kg。
In such scheme, described ardealite is the waste residue that phosphatization workshop is discharged, and its purity is not less than 95wt%, SO3Content be 35～
40wt%, P2O5Content is less than 2.14wt%, and its Blain specific surface is more than 350m2/kg。
In such scheme, described cement is P.O42.5 Portland cement, and its Blain specific surface is more than 350m2/kg。
In such scheme, the assay method of described Blain specific surface is according to GB/T 8074-2008 " cement specific surface area mensuration side
Method Bo Shi method " carry out.
In such scheme, described Calx is technical grade white powder, and purity is more than 98%.
In such scheme, described shield silt particle clay content is 5～20wt%, sand content ＞ 70wt%, and its modulus of fineness is
1.6～2.3.
In such scheme, described Machine-made Sand is cobble breaking type, and content of stone powder is less than 4%, and its modulus of fineness is 2.3～3.0,
Apparent density is more than 2650kg/m3。
In such scheme, described water reducer is VIVID-500 (C) anti-chamotte mould polycarboxylic acid series high efficiency water reducing agent, its water-reducing rate > 20%.
In such scheme, described thickening agent is hydroxyethyl cellulose (HEC) or hydroxypropyl methyl cellulose (HPMC), its
Molecular weight is not less than 100,000.
The preparation method of above-mentioned a kind of big proportion low denseness water resistant dispersion synchronous grouting material, described synchronous grouting material is by following heavy
The component composition of amount number: 100 parts of flyash, ardealite 10～50 parts, cement 5～20 parts, Calx 10～30 parts,
Shield silt particle 200～400 parts, Machine-made Sand 0～200 parts, water reducer 0.1～0.5 part, thickening agent 0.05～0.2 part, water 80～
120 parts, its preparation method comprises the following steps:
1) raw material is weighed by the weight proportion of each component；
2) by load weighted Calx, flyash, ardealite, cement, Machine-made Sand and thickening agent mixing and stirring, add
Shield silt particle, together dry mixing 1～2 minutes, obtain dry blend；
3) water reducer it is added to the water and stirs, being then added in the dry blend of step (2) gained, remix stirring
2～3 minutes, obtain described big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material.
In such scheme, shield silt particle needs first to carry out the test of moisture content before use, then dries the survey carrying out clay content, sand content
Fixed；Preparation process needs the size of the moisture content according to silt particle, the amount of water in regulation match ratio.
According to such scheme, prepared big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material its slump ＞ 20mm, stream
Dynamic degree ＞ 200mm, denseness ＜ 11cm, bleeding rate ＜ 0.5%, density ＞ 2.0g/cm3, 7d comprcssive strength >=1MPa, 28d is strong
Degree >=1.5MPa, 28d strength ratio >=0.90, land and water, it is possible to effective against water-dispersible and prevent duct piece float upward, meet shield-tunneling construction pair
The performance requirement of slurry.
The principle of the present invention is:
1) in described big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material, the hydration process of Binder Materials is as follows: cement is met
There is hydration reaction after water, generate C-S-H gel, Ca (OH)2Deng, cement provides OH together with Calx-；And ardealite
Main component be original state dihydrate gypsum, it is provided that SO4 2-；At OH-With SO4 2-Exciting under, the active oxygen in flyash
Change aluminum and silicon oxide disintegrates, Si-O key and Al-O bond fission, form entringite and activated presoma, its reaction equation
For:
CaO+Al2O3+3(CaSO4·2H2O)+2Ca(OH)2+24H2O→
3CaO·Al2O3·3CaSO4·32H2O
3+Si-O-Si3++6OH-→2[SiO(OH)3]-
3+Al-O-Al3++8OH-→2[Al(OH)4]-
3+Si-O-Al3++7OH-→[SiO(OH)3]-+[Al(OH)4]-
[SiO (OH) after destructing3]-With [Al (OH)4]-Can be on the increase, with the Ca dissociated in serosity2+Reaction bonded generates aquation
Calcium silicates, drated calcium aluminate and the hydrated product of three-dimensional sa structure.The constantly intertexture adhesion of hydrated product in Binder Materials gathers
Close, ultimately form the most unordered network structure.During described network structure is formed, it may appear that Al3+Replace Si4+Show
As, make aluminum ions paripheral zone negative charge, in order to balance negative charge, positively charged Na+、K+、Ca2+Deng alkali ion meeting
It is filled in the passage of gel, thus obtains metastable gel structure, generate and there is the erodible good class zeolite of water resistant
Material (Na, Ca)-Si-Al-H；Gluing filling at the zeolite structured skeleton function of entringite, class with C-S-H, C-A-S-H etc.
Under effect, ultimately form the hardened paste of compact structure.
2) fluvial sand using shield silt particle to replace in tradition injecting paste material is as follows with bentonitic principle:
Shield silt particle be mainly composed of fine sand and shale clay, the clay content 5～20wt% of experiment silt particle used, sand content is more than
70wt%, modulus of fineness is 1.6～2.3.Shale constituent content in shield silt particle is the biggest, and water absorption and swelling is the best, it is possible to subtract
The amount of few Free water, increase viscosity, reduction mobility.It has column structure simultaneously, and substantial amounts of active group is contained on surface
(" OH " and " Si-O "), has water absorption, thixotropy, dilatancy etc., and after incorporation, the viscosity of slurry increases, obstruction
Grain sinks, and can form card room structure after its hydrolysis, makes the irreducible water that substantial amounts of Free water is changed in card room structure, and then improves
Cohesiveness, water-retaining property and stability, prevent stifled pump, the appearance of plugging phenomenon.The modulus of fineness of the chiltern composition in shield silt particle
1.6～2.3, mean diameter, about at about 0.3mm, can be especially suitable for doing synchronous grouting compared with the fine sand in Machine-made Sand
Fine aggregate in material.Thus can obtain, the shale composition in shield silt particle has bentonitic effectiveness, chiltern composition and common river
Fine sand in sand is the same, therefore can replace the Machine-made Sand in conventional synchronization injecting paste material and bentonite with shield silt particle.
3) water resistant dispersion mechanism is as follows:
Thickening agent hydroxyethyl ether cellulose (HEC) or hydroxypropyl methyl cellulose (HPMC) are to have backbone and stronger
The water-soluble high-molecular compound of absorbability.Cement, flyash, ardealite granule and fine aggregate etc. can be attached together by it,
Improve the intergranular cohesion of synchronous grouting material；And the hydroxyl on long-chain and the oxygen atom on ehter bond are formed with associated water molecules
Hydrogen bond, part free water no longer " freely ", causes solution retrogradation；Can mutually be wound around between cellulose ether chain simultaneously, be formed
Three-dimensional net structure, thus be greatly improved the viscosity of synchronous grouting material and water resistant washes ability, improves the parcel of slurry, homogeneous
Property, improve its anticol sand separation, bleeding isolation ability；It addition, substantial amounts of active group is contained on shield silt particle surface, there is suction
Aqueous, thixotropy, dilatancy, with the high polymer long chain commissure IPN of thickening agent, can improve the water resistant dispersion of slurry further
Property and stability, and the stone powder in Machine-made Sand also has a water suction viscosifying action of shale component in shield silt particle, therefore this slurry can be
In the environment of high-pressure water-enriched, fill up space between section of jurisdiction and soil layer packed uniform, and occur without glue, glue sand separation phenomenon.
4) prevent duct piece float upward mechanism as follows:
Owing to injecting paste material acts primarily as filling space, prevents ground settlement and make the effect of section of jurisdiction entirety uniform stressed, thus strong to it
Spend less demanding.For cost-effective and extend the pot life of slurry, general Binder Materials especially cement consumption is less, slurry
Setting time more than 20h.This research is by controlling denseness and fluidity, it is to avoid from the injecting paste material of injected hole injection at gravity
Flow under effect bottom section of jurisdiction, form bigger buoyancy and make duct piece float upward；Simultaneously because the great denseness of ratio of slurry is low, adhesive aggregation
Property strong, between Binder Materials, Binder Materials and fine aggregate, fine aggregate, mutual rubbing action is obvious so that slurry has bigger
Shear yield strength, it is possible to resist a certain degree of deformation, prevents duct piece float upward ability before improving slurry hardening further.Subsequently,
Cement, Calx, flyash and ardealite system hydration and hardening and produce intensity, non-deformability is improved again, enters
One step prevents tunnel duct piece from floating.
Additionally, for ensureing that injecting paste material, in the case of the low denseness of big proportion, still has the good performance noted and properly increases it
Intensity, the present invention mixes appropriate anti-chamotte mould polycarboxylic acid series high efficiency water reducing agent in injecting paste material, and this water reducer can effective gram
Take ordinary water-reducing agent and easily weakened the shortcoming of diminishing usefulness by shale absorption, improve the service behaviour of slurry well.Shield used
When the clay content of silt particle is less, the volume of thickening agent can be properly increased and reduce the consumption of water, ensureing low denseness；But containing mud
The amount of shield silt particle can be reduced when measuring bigger and increase Machine-made Sand consumption, increasing the friction shear resisting ability between sand grains, make slurry
Enough shear yield strengths are had to carry out resistance to deformation before hardening.
Compared with prior art, the invention have the benefit that
1) present invention is by shield silt particle moisture content, clay content and the isoparametric research of sand content, selecting and suitably prepare synchronization
The shield silt particle index parameter scope of injecting paste material；And rationally application shield silt particle and Machine-made Sand make fine aggregate, by regulation fine coal
The ratio of ash, Calx, ardealite and cement controls the setting time after sizing material forming and intensity；By regulation cement mortar rate, mud
Sand Machine-made Sand, than controlling the sand content of slurry, density, denseness and shear yield strength, makes slurry can rely on slurry upon hardening
The viscosity of self and shear resistance resist a certain degree of deformation；By regulating capacity, anti-chamotte mould polycarboxylic acids high efficiency diminishing
Agent and the volume of thickening agent, control the service behaviour of slurry, denseness and intensity further, make slurry possess good noted filling
Property, water resistant dispersibility, impermeability, water resistant are erodible and prevent the ability of duct piece float upward, thus adapt to different construction conditions to slurry
The requirement of material performance.
2) ratio of synchronous grouting material of the present invention is great: density can reach 2.06g/cm3；Denseness is low: consistometric value ＜ 11cm；
The property noted is good, pot life is long: initial flow degree ＞ 200mm, setting time ＞ 20h；Bleeding rate is little: bleeding rate ＜ 0.5%；
Water resistant dispersive property is excellent: the 28d land and water equal ＞ of strength ratio 90%；7d comprcssive strength ＞ 1MPa, 28d comprcssive strength ＞ 1.5MPa,
Duct piece float upward can be effectively prevented, meet the shield-tunneling construction performance requirement to injecting paste material.
3) big proportion of the present invention low denseness water resistant dispersion synchronous grouting material, flyash in its bonding component, ardealite
Incorporation is more than 70wt%, and uses shield silt particle and Machine-made Sand as fine aggregate, can effectively solve tradition river sand resource anxiety
Problem.Owing to reasonably make use of the ardealite produced in flyash that power plant discharges and phosphatization workshop production process, it is achieved that
The recycling of trade waste, and the use of the silt particle excavated during shield-tunneling construction and Machine-made Sand decreases digging of fluvial sand and adopts,
Meet the requirement of the strategy of sustainable development.
4) preparation method that the present invention relates to is simple, and raw material is simple and easy to get, the injecting paste material excellent combination property prepared, the feature of environmental protection
Energy is prominent, low cost, it is possible to well meets the requirement of site operation, has significant economic benefit and social benefit.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is carried out
Further describe.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit this
Invention.
In following example, described flyash is II level ash, and Blain specific surface is more than 350m2/kg；
Described ardealite is the waste residue that phosphatization workshop is discharged, and its purity is not less than 95wt%, SO3Content is 37.5wt%, P2O5
Content is less than 2.14wt%, and its Blain specific surface is more than 350m2/kg；
Described cement is P.O42.5 Portland cement, and its Blain specific surface is more than 350m2/kg；
Described Calx is technical grade white powder, and purity is more than 95%；
Described Machine-made Sand is cobble breaking type, and content of stone powder is 3.4%, and its modulus of fineness is 2.8, and apparent density is
2718kg/m3；
Described water reducer is VIVID-500 (C) type anti-chamotte mould polycarboxylic acid series high efficiency water reducing agent.
The preparation method of described big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material comprises the following steps: 1) by raw material
Proportioning weighs each raw material；2) load weighted Calx, flyash, ardealite, cement, Machine-made Sand and thickening agent are added stirring
Mix homogeneously in machine, adds shield silt particle, together after dry mixing 2 minutes, obtains dry blend；3) water reducer is added to the water also
Stirring, add in dry blend together, mix and blend obtains described big proportion low denseness water resistant dispersion environment-friendly type for 3 minutes and synchronizes
Injecting paste material, should keep continuously stirred when gained injecting paste material stores, the most stand-by.
The performance test methods of the big proportion low denseness water resistant dispersion synchronous grouting material that following example prepare is as follows:
1) mensuration of mechanical property: comprcssive strength is carried out with reference to GB177-85 " strength of cement mortar detection method "；
2) test of mobile performance: slump test method presses GB/T_2419-2005 " Test method for fluidity of cement mortar "
Carry out, after the slump is for plugging and pounding in serosity loads mould and vertically mentioning, the height loss recorded；
3) test of bleeding rate: the mensuration of bleeding rate is carried out with reference to GB/T3183-1997 " masonry cement "；
4) test of density: measure quality m of fixed volume glass1, measure gross weight m after filling slurry2, use slurry
Quality (m2-m1) density of slurry it is divided by the volume of glass；
5) denseness and the test of setting time: carry out by JGJ70-90 " building serosity key property test method "；
6) test of water resistant dispersive property: carry out with reference to DL/T5177-2000 " non-dispersible underwater concrete Experimental Procedures ".
Embodiment 1
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight:
100 parts of flyash, ardealite 40 parts, cement 5 parts, Calx 20 parts, shield silt particle 300 parts, Machine-made Sand 100
Part, water reducer 0.2 part, thickening agent 0.1 part, 110 parts of water.
Described shield silt particle moisture content 4.6%, clay content 12.6wt%, sand content 86.2wt%, its modulus of fineness is 1.8；
Described thickening agent is hydroxypropyl methyl cellulose (HPMC), and its molecular weight is 200,000.
The proportioning raw materials of the big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material described in the present embodiment is as shown in table 1, property
Test result can be shown in Table 2.
Embodiment 2
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight:
100 parts of flyash, ardealite 35 parts, cement 20 parts, Calx 10 parts, shield silt particle 400 parts, Machine-made Sand 0 part,
Water reducer 0.5 part, thickening agent 0.05 part, 110 parts of water.
Described Calx is technical grade white powder, and purity is more than 98%.Described shield silt particle moisture content 4.6%, clay content
12.6wt%, sand content 86.2wt%, its modulus of fineness is 1.8；Described thickening agent is hydroxypropyl methyl cellulose (HPMC),
Its molecular weight is 200,000.
The proportioning raw materials of the big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material described in the present embodiment is as shown in table 1, property
Test result can be shown in Table 2.
Embodiment 3
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight:
100 parts of flyash, ardealite 50 parts, cement 5 parts, Calx 10 parts, shield silt particle 200 parts, Machine-made Sand 200
Part, water reducer 0.2 part, thickening agent 0.1 part, 100 parts of water.
Described shield silt particle moisture content 5.3%, clay content 20wt%, sand content 79.1wt%, its modulus of fineness is 1.6；
Described thickening agent is hydroxypropyl methyl cellulose (HPMC), and its molecular weight is 200,000.
The proportioning raw materials of the big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material described in the present embodiment is as shown in table 1, property
Test result can be shown in Table 2.
Embodiment 4
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight:
100 parts of flyash, ardealite 10 parts, cement 15 parts, Calx 30 parts, shield silt particle 200 parts, Machine-made Sand 200
Part, water reducer 0.2 part, thickening agent 0.1 part, 100 parts of water.
Described shield silt particle moisture content 5.3%, clay content 20wt%, sand content 79.1wt%, its modulus of fineness is 1.6；Described
Thickening agent be hydroxyethyl cellulose (HEC), its molecular weight is 100,000.
The proportioning raw materials of the big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material described in the present embodiment is as shown in table 1, property
Test result can be shown in Table 2.
Embodiment 5
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight:
100 parts of flyash, ardealite 20 parts, cement 10 parts, Calx 30 parts, shield silt particle 400 parts, Machine-made Sand 0 part,
Water reducer 0.5 part, thickening agent 0.05 part, 80 parts of water.
Described shield silt particle moisture content 4.2%, clay content 5wt%, sand content 93.6wt%, its modulus of fineness is 1.9；
Described thickening agent is hydroxyethyl cellulose (HEC), and its molecular weight is 200,000.
The proportioning raw materials of the big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material described in the present embodiment is as shown in table 1, property
Test result can be shown in Table 2.
Embodiment 6
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight:
100 parts of flyash, ardealite 30 parts, cement 15 parts, Calx 20 parts, shield silt particle 300 parts, Machine-made Sand 100
Part, water reducer 0.1 part, thickening agent 0.2 part, 120 parts of water.
Described shield silt particle moisture content 4.8%, clay content 15.7wt%, sand content 83.2wt%, its modulus of fineness is 1.8；
Described thickening agent is hydroxypropyl methyl cellulose (HPMC), and its molecular weight is 100,000.
The proportioning raw materials of the big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material described in the present embodiment is as shown in table 1, property
Test result can be shown in Table 2.
Embodiment 7
A kind of big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following portions by weight:
100 parts of flyash, ardealite 30 parts, cement 10 parts, Calx 20 parts, shield silt particle 300 parts, Machine-made Sand 100
Part, water reducer 0.3 part, thickening agent 0.2 part, 90 parts of water.
Described shield silt particle moisture content 4.4%, clay content 8.5wt%, sand content 90.2wt%, its modulus of fineness is 1.9；
Described thickening agent is hydroxypropyl methyl cellulose (HPMC), and its molecular weight is 100,000.
The proportioning raw materials of the big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material described in the present embodiment is as shown in table 1, property
Test result can be shown in Table 2.
The proportioning raw materials (parts by weight) of synchronous grouting material described in table 1 embodiment 1～7
The performance test results of synchronous grouting material described in table 2 embodiment 1～7
Table 2 illustrate synchronous grouting material prepared by the method for the present invention have than great, denseness is little, fluidity is good, pot life
Long, the feature such as water resistant dispersion.Gained synchronous grouting material can function well as and prevent slip casting tunnel duct piece floating, reduce ground
Sedimentation, waterproof, make tunnel duct piece uniform stressed, it is ensured that constitutionally stable effect.
Bound value and interval value that the present invention is raw materials used can realize the present invention, then this illustrative example that just differs.And
Above-described embodiment is only by clearly demonstrating made example, the not restriction to embodiment.Common for art
For technical staff, can also make other changes in different forms on the basis of the above description, and these change or
Within variation is still in the protection domain of the invention.
Claims (6)
1. a big proportion low denseness water resistant dispersion synchronous grouting material, is made up of the component of following parts by weight: flyash 100
Part, ardealite 10～50 parts, cement 5～20 parts, Calx 10～30 parts, shield silt particle 200～400 parts, Machine-made Sand 0～
200 parts, water reducer 0.1～0.5 part, thickening agent 0.05～0.2 part, water 80～120 parts；
Described shield silt particle clay content is 5～20wt%, sand content ＞ 70wt%, and modulus of fineness is 1.6～2.3；
Described Machine-made Sand is cobble breaking type, and content of stone powder is less than 4%, and its modulus of fineness is 2.3～3.0, and apparent density is big
In 2650kg/m3；
Described water reducer is anti-chamotte mould polycarboxylic acid series high efficiency water reducing agent, its water-reducing rate > 20%.
Synchronous grouting material the most according to claim 1, it is characterised in that described flyash is II level ash, and its Bo Shi compares table
Area is more than 350m2/kg。
Synchronous grouting material the most according to claim 1, it is characterised in that described ardealite is the waste residue that phosphatization workshop is discharged,
SO3Content is 35～40wt%, P2O5Content is less than 2.14wt%, and its Blain specific surface is more than 350m2/kg。
Synchronous grouting material the most according to claim 1, it is characterised in that described cement is 42.5 grades of Portland cements,
Its Blain specific surface is more than 350m2/kg；Described Calx is technical grade white powder, and purity is more than 95%.
Synchronous grouting material the most according to claim 1, it is characterised in that described thickening agent is hydroxyethyl cellulose or hydroxyl
Propyl methocel, its molecular weight is not less than 100,000.
6. disperse the preparation method of synchronous grouting material according to the big proportion low denseness water resistant described in any one of Claims 1 to 5, it is special
Levying and be, described synchronous grouting material is made up of the component of following parts by weight: 100 parts of flyash, ardealite 10～50 parts,
Cement 5～20 parts, Calx 10～30 parts, shield silt particle 200～400 parts, Machine-made Sand 0～200 parts, water reducer 0.1～
0.5 part, thickening agent 0.05～0.2 part, water 80～120 parts, its preparation method comprises the following steps:
1) raw material is weighed by the weight proportion of each component；
2) by load weighted Calx, flyash, ardealite, cement, Machine-made Sand and thickening agent mixing and stirring, add
Shield silt particle, together dry mixing 1～2 minutes, obtain dry blend；
3) water reducer be added to the water and stir, being then added to step 2) in the dry blend of gained, remix stirring 2～
3 minutes, obtain described big proportion low denseness water resistant dispersion environment-friendly type synchronous grouting material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410814078.7A CN104609814B (en) | 2014-12-24 | 2014-12-24 | Anti-aqueous dispersion synchronous grouting material with large specific gravity and low consistence |
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| CN201410814078.7A CN104609814B (en) | 2014-12-24 | 2014-12-24 | Anti-aqueous dispersion synchronous grouting material with large specific gravity and low consistence |
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| CN105712738B (en) * | 2016-03-21 | 2018-12-14 | 山东安实绿色开采技术发展有限公司 | A kind of high water filling material for discarded pipe filling |
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| CN106220121B (en) * | 2016-07-21 | 2018-06-08 | 中煤科工集团重庆研究院有限公司 | Coal-philic gas extraction drilling and hole sealing material and using method thereof |
| CN108409227A (en) * | 2018-02-02 | 2018-08-17 | 中交第二航务工程局有限公司 | Slurry, which is abandoned, using slurry shield abandons sand co-formulated Testing of Grouting Material Behind Segments method |
| CN108298912A (en) * | 2018-03-16 | 2018-07-20 | 中铁十二局集团有限公司 | The preparation method of synchronous grouting concrete and synchronous grouting concrete |
| CN109824319A (en) * | 2018-09-28 | 2019-05-31 | 江苏苏博特新材料股份有限公司 | A kind of no sand mold metro shield grouting material and preparation method thereof |
| CN111362653B (en) * | 2020-03-19 | 2022-07-19 | 河南锦亿建材有限公司 | Green and environment-friendly plastering dry-mixed mortar and preparation method thereof |
| CN111648297A (en) * | 2020-05-12 | 2020-09-11 | 山东安澜工程建设有限公司 | River course in-situ solidification construction method |
| CN112142402A (en) * | 2020-09-16 | 2020-12-29 | 贵州正和天筑科技有限公司 | Dry concrete and preparation method thereof |
| CN112194432B (en) * | 2020-10-10 | 2022-06-10 | 中建商品混凝土有限公司 | High-dispersion high-adhesion shield grouting material |
| CN114230270A (en) * | 2021-12-07 | 2022-03-25 | 华南理工大学 | Shield synchronous grouting material and preparation method thereof |
| CN114230224B (en) * | 2021-12-21 | 2023-08-25 | 青岛市地铁六号线有限公司 | Low-carbon impervious full-solid waste grouting material and preparation method and application thereof |
| CN114516741B (en) * | 2022-02-19 | 2023-05-30 | 西安市政道桥建设集团有限公司 | Synchronous grouting material and preparation method thereof |
| CN115536324A (en) * | 2022-10-21 | 2022-12-30 | 河海大学 | High-content waste sand wall post-grouting material and grouting method |
| CN116606108B (en) * | 2023-05-17 | 2024-05-24 | 江河安澜工程咨询有限公司 | High-performance backfill grouting material for TBM construction of water-rich tunnel section and preparation method thereof |
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