CN107935516A - A kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band - Google Patents
A kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band Download PDFInfo
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- CN107935516A CN107935516A CN201711142603.5A CN201711142603A CN107935516A CN 107935516 A CN107935516 A CN 107935516A CN 201711142603 A CN201711142603 A CN 201711142603A CN 107935516 A CN107935516 A CN 107935516A
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- microdilatancy
- grout material
- tunnel
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- molded
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- 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
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Lining And Supports For Tunnels (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band, easy contraction distortion, compatibility and the associativity deficiency for mainly solving the problems, such as such current grout material generally existing cause tunnel vault the mass defects such as come to nothing, crack occur.The microdilatancy grout material is by 750~800 parts of bonding component, compound 900~1350 parts of grading quartz sand, 100~150 parts of graphene oxide modified mineral admixture, 8~10 parts of volume stability conditioning agent, enhanced 2~3 parts of water-reducing agent adds water to mix together, its ratio of water to material is 0.16~0.19.The microdilatancy grout material has preferable mobility and pumping, has good binding ability with lining concrete, has significant economic benefit and social benefit in capital construction industry.
Description
Technical field
The present invention relates to concrete material technical field, and in particular to a kind of to be molded into the micro- of slurry for tunnel-liner vault band
Expand grout material.
Background technology
Tunnel Arch lining concrete in filling process, due to pumping pressure deficiency or because tube drawing too early etc. reason easily make
There are the mass defects such as thickness is insufficient, comes to nothing, cracks in arching roof liner building concrete.To improve railway tunnel lining quality, prevent
Occurs tunnel vault concrete chip off-falling phenomenon during operation, middle 11 innings of Beijing-Shenyang Jing Jikezhuan headquarter of iron successfully develop tunnel
Road vault band mould Construction technology of Pouring cement mortar, the technology is by transforming lining trolley, in lining trolley template center line position
A certain number of injected holes are set along trolley longitudinal direction, and grouting mounting flange is installed, pre-buried Reactive Powder Concrete
(RPC) Grouting Pipe, carries out slip casting at built-in slip casting pipe in time after concreting.The construction technology not only simplify biography
System grouting process, and significantly improve the quality of slip casting.But band is molded into sizing process, it is desirable to backfills injecting paste material and lining cutting
There are good compatibility, effective prosthetic (position of lining thickness deficiency) and good cohesiveness between concrete, in addition,
Due to pouring technique and the reasons such as watering time is long, backfill injecting paste material is also required to have certain penetration to concrete.
For this reason, the application provides a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band, grout material uses
Indices are better than the filling mortar of lining concrete performance, good with the adhesive property of concrete, while have good flowing
Property, aid pumpability and micro-expansibility energy can grow the construction time, and bleeding is not shunk, and intensity is high after condensation, can not only play filling
The defects of acting on, and can making up or repair secondary lining concrete, especially construction joint, so as to improve lining concrete
Integrated carrying ability.
The content of the invention
The microdilatancy grout material that tunnel-liner vault band it is an object of the invention to solve to use at present is molded into slurry exists
Easy contraction distortion, compatibility and associativity deficiency cause tunnel vault the problem of mass defects such as come to nothing, crack occur, there is provided
A kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band.The grout material has good mobility and aid pumpability
And micro-expansibility, there is good binding ability with lining concrete, can grow the construction time, bleeding is not shunk, and is had certain
Interior maintenance action, the moisture field of inside concrete can be improved, the water capacity of inside concrete is improved, effectively reduce concrete
Self-constriction, so as to efficiently control the generation of concrete shrinkage crack.To achieve the above object, the technology used in the present invention side
Case is as follows：
A kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band, including following components：It is gel component, compound
Grading quartz sand, graphene oxide modified mineral admixture, volume stability conditioning agent, enhanced water-reducing agent and water.
Further, the formula of the microdilatancy grout material in parts by weight is：750~800 parts of bonding component, it is multiple
Close 900~1350 parts of grading quartz sand, 100~150 parts of graphene oxide modified mineral admixture, volume stability conditioning agent 8
~10 parts, enhanced 2~3 parts of water-reducing agent, ratio of water to material 0.16~0.19.
Further, the bonding component by Portland cement and sulphate aluminium cement according to 19:1 mass ratio mixes
After conjunction, then mix the triethanolamine equivalent to two kinds of cement gross masses 0.05% and be ground to 400~500m of specific surface area2/kg
Form.Grinding is so that material has good permeability and concrete castability.
Further, the compound grading quartz sand by particle diameter be respectively 40~70 mesh and 20~40 mesh quartz sand according to
8:1 mass ratio, which is uniformly mixed, to be formed.
Further, the graphene oxide modified mineral admixture is dispersed in water by graphene oxide, adds silicon
Ash and flyash stirring drying form.Wherein, 0.05% of the dosage of graphene oxide equivalent to gel component quality, silicon ash and
The mass ratio of 13% of total dosage equivalent to bonding component quality of flyash, silicon ash and flyash is 1:2.
Further, the flyash is II grades of flyash, its density is 2.60~2.75g/cm3, specific surface area is big
In 3500cm2/g；The silicon ash average grain diameter is 0.1~0.3 μm, and specific surface area is 20~28m/g, SiO2Content is left for 90%
It is right.
Further, the volume stability conditioning agent by cement expansive material, red brick powder, high hydroscopic resin SAP according to
6:3:1 mass ratio, which is uniformly mixed, to be formed.The red brick powder maximum particle diameter is 0.85mm or so, water absorbent rate 70-100g/g；
The particle diameter of the high hydroscopic resin SAP is 190-250 μm, density 0.70g/cm3.Wherein red brick powder and high hydroscopic resin SAP
As interior conserving material, the moisture field of inside concrete can be improved, improve the water capacity of inside concrete, so as to effectively control
The generation of concrete shrinkage crack processed.
Further, the enhanced water-reducing agent by high-efficiency polycarboxylic acid water reducer and lithium carbonate according to 5:1 mass ratio mixes
Conjunction uniformly forms.
Compared with prior art, the invention has the advantages that：(1) solves the tunnel-liner vault used at present
Band is molded into the microdilatancy grout material of slurry due to easy contraction distortion, compatibility and associativity deficiency, cause tunnel vault to occur coming to nothing,
The problem of mass defects such as cracking；(2) the microdilatancy grout material being prepared has good mobility and aid pumpability, with lining
Building concrete has good binding ability, can grow the construction time, and bleeding is not shunk, and has certain interior maintenance action, can change
The moisture field of kind inside concrete, improves the water capacity of inside concrete, effectively reduces concrete self-shrinkage, so as to effectively control
The generation of concrete shrinkage crack；(3) combination between microdilatancy grout material and lining concrete provided by the invention is anti-
Pressure, flexural strength are above the intensity of concrete, can not only play packing action, but also can make up or repair secondary lining and mix
The defects of solidifying soil, especially construction joint, so as to improve the integrated carrying ability of lining concrete.
Embodiment
To make those of ordinary skill in the art fully understand technical scheme and beneficial effect, below in conjunction with specific
Embodiment is further described.
A kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band, by following raw materials by weight
Mix：750~800 parts of bonding component, compound 900~1350 parts of grading quartz sand, graphene oxide modified mineral blend
100~150 parts of material, 8~10 parts of volume stability conditioning agent, enhanced 2~3 parts of water-reducing agent, ratio of water to material 0.16~0.19.Wherein
Bonding component is by 42.5 grades of Portland cements and 42.5 grades of sulphate aluminium cements according to 19:1 mass ratio mixing, and fill
Equivalent to the triethanolamine of two kinds of cement gross masses 0.05%, it is levigate to specific surface area be 400~500m2/ kg is formed.It is used multiple
Close grading quartz sand by particle diameter for 40~70 mesh and 20~40 mesh quartz sand according to 8:1 mass ratio, which is uniformly mixed, to be formed, stone
SiO in sand2Content be 99% or so.Graphene oxide modified mineral admixture used is to will be equivalent to cementitious material quality
In water, the silicon ash-flyash added equivalent to cementitious material quality 13% mixes 0.05% graphene oxide ultrasonic disperse
Compound (both mass ratioes 1:2) grinding forms, and wherein flyash is II grades of flyash, its density is 2.60~2.75g/cm3, than
Surface area is more than 3500cm2/g；For silicon ash average grain diameter used at 0.1~0.3 μm, specific surface area is 20~28m/g, SiO2Content
For 90% or so.Volume stability conditioning agent used is by cement expansive material, red brick powder, high hydroscopic resin SAP according to 6:3:1
Mass ratio, which is uniformly mixed, to be formed, and wherein red brick powder grinding to maximum particle diameter is about 0.85mm, its water absorbent rate is 70-100g/g,
High hydroscopic resin SAP particle diameters used are 190-250 μm, density 0.70g/cm3.Enhanced water-reducing agent used is by the efficiently poly- carboxylic of powder
Sour water-reducing agent and lithium carbonate are according to 5:1 mass ratio, which is uniformly mixed, to be formed.
The formula of embodiment 1-5 microdilatancy grout materials is as shown in table 1 below.
The formula of microdilatancy grout material in 1 embodiment 1~5 of table
The preparation method of microdilatancy grout material is as follows in each embodiment：Weighed accordingly by formula (parts by weight) in table respectively
The component of amount, wherein volume stability conditioning agent, enhanced water-reducing agent, hydration note component A, bonding component, compound grading quartz
Sand, graphene oxide modified mineral admixture, which close, is denoted as component B, and the material in component B is gradually added into component A under stirring
In, uniform slurry is formed, this slurry is to be used for the microdilatancy grout material that tunnel-liner vault band is molded into slurry.
To be fully understood by the actual performance for the microdilatancy grout material that the embodiment of the present invention is prepared, corresponding survey has been carried out
Try and compared with the standard reference value of microdilatancy grout material Essential Performance Requirements.Go out machine fluidity, 90min fluidities are protected
Value is stayed with reference to GB50448-2015《Cement-based grouting material application technology specification》Test, agitating mode is stirring at low speed mould
Formula, mixing time 3min；90min fluidity retentions are after machine fluidity is completed and places 90min, then stirring at low speed
1min, the fluidity numerical value tested as requested.Plastic expansion rate is pressed《II plate-type non-fragment orbit water of passenger dedicated railway line CRTS
The provisional technical conditions of mud emulsified asphalt slurry are tested, and measure 3h plastic expansion rates.Resistance to compression, flexural strength test are according to GB/
T17671-1999 tests, and the curing condition after the test specimen demoulding is (20 ± 2) DEG C, and relative humidity is no less than 90%, must not
Yu Shuizhong soaks or direct water drenching.When progress is tested with condition test piece intensity, coated after the test specimen demoulding using winding film.
24h bond strengths are tested according to GB/T50081.Test result such as table 2 below.
Microdilatancy grout material the performance test results table in 2 embodiment 1~5 of table
The result explanation of table 2, what each embodiment of the application provided is used for the microdilatancy note that tunnel-liner vault band is molded into slurry
It is very high with 90min fluidities that slurry goes out machine fluidity, has good mobility and aid pumpability.Plastic expansion rate is 0.6
~1.2%, there is certain micro-expansibility.The resistance to compression of 12h, 1d, 28d, flexural strength are above standard value.Adhesion strength is high,
There is good binding ability with lining concrete, can grow the construction time, bleeding is not shunk, and has certain interior maintenance action,
Solve the tunnel-liner vault band used at present and be molded into the microdilatancy grout material of slurry due to easy contraction distortion, compatibility and combination
Property deficiency, cause tunnel vault the problem of mass defects such as come to nothing, crack occur.
Claims (10)
1. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band, it is characterised in that including following components：Gel
Component, compound grading quartz sand, graphene oxide modified mineral admixture, volume stability conditioning agent, enhanced water-reducing agent with
And water.
2. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 1, its feature exist
In the formula of the microdilatancy grout material in parts by weight is：750~800 parts of bonding component, compound grading quartz sand
900~1350 parts, 100~150 parts of graphene oxide modified mineral admixture, 8~10 parts of volume stability conditioning agent is enhanced
2~3 parts of water-reducing agent, ratio of water to material 0.16~0.19.
3. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 1 or 2, its feature
It is：The bonding component is by Portland cement and sulphate aluminium cement according to 19:After 1 mass ratio mixing, then mix
Equivalent to two kinds of cement gross masses 0.05% triethanolamine and be ground to 400~500m of specific surface area2/ kg is formed.
4. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 1 or 2, its feature
It is：The compound grading quartz sand is respectively the quartz sand of 40~70 mesh and 20~40 mesh according to 8 by particle diameter:1 mass ratio
It is uniformly mixed and forms.
5. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 1 or 2, its feature
It is：The graphene oxide modified mineral admixture is dispersed in water by graphene oxide, adds silicon ash and flyash stirs
Drying is mixed to form.
6. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 5, its feature exist
In：Total dosage of 0.05% of the dosage of graphene oxide equivalent to gel component quality, silicon ash and flyash is equivalent to gelling
The mass ratio of the 13% of constituent mass, wherein silicon ash and flyash is 1:2.
7. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 5 or 6, its feature
It is：The flyash is II grades of flyash, its density is 2.60~2.75g/cm3, specific surface area is more than 3500cm2/g；It is described
Silicon ash average grain diameter is 0.1~0.3 μm, and specific surface area is 20~28m/g, SiO2Content is 90% or so.
8. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 1 or 2, its feature
It is：The volume stability conditioning agent is by cement expansive material, red brick powder, high hydroscopic resin SAP according to 6:3:1 mass ratio
It is uniformly mixed and forms.
9. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 8, its feature exist
In：The red brick powder maximum particle diameter is 0.85mm or so, its water absorbent rate is 70-100g/g；The grain of the high hydroscopic resin SAP
Footpath is 190-250 μm, density 0.70g/cm3。
10. a kind of microdilatancy grout material that slurry is molded into for tunnel-liner vault band according to claim 1 or 2, it is special
Sign is：The enhanced water-reducing agent is by high-efficiency polycarboxylic acid water reducer and lithium carbonate according to 5:1 mass ratio, which is uniformly mixed, to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142603.5A CN107935516B (en) | 2017-11-17 | 2017-11-17 | Micro-expansion grouting material for grouting with mold at arch crown of tunnel lining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142603.5A CN107935516B (en) | 2017-11-17 | 2017-11-17 | Micro-expansion grouting material for grouting with mold at arch crown of tunnel lining |
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| CN107935516B CN107935516B (en) | 2020-04-21 |
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Cited By (7)
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| CN108558330A (en) * | 2018-05-22 | 2018-09-21 | 武汉源锦建材科技有限公司 | A kind of tunnel-liner vault band mould grouting microdilatancy grout material |
| CN108625878A (en) * | 2018-05-14 | 2018-10-09 | 北京铁科首钢轨道技术股份有限公司 | A kind of technique for solving the problems, such as tunnel-liner vault and coming to nothing |
| CN109250987A (en) * | 2018-10-19 | 2019-01-22 | 郝鹏飞 | A kind of tunnel band is molded into pulp material |
| CN109503092A (en) * | 2018-12-24 | 2019-03-22 | 河南城建学院 | Early strong impervious, cement base grouting material of height containing graphene oxide and preparation method thereof |
| CN112047700A (en) * | 2020-09-14 | 2020-12-08 | 江西龙正科技发展有限公司 | Rapid maintenance reinforcing adhesive for roads and bridges and preparation method thereof |
| CN112321245A (en) * | 2020-11-02 | 2021-02-05 | 江苏绿和环境科技有限公司 | Formula of sleeve grouting material |
| CN112390595A (en) * | 2020-12-04 | 2021-02-23 | 武汉理工大学 | Red facing mortar based on wet-milled superfine red brick slurry |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625878A (en) * | 2018-05-14 | 2018-10-09 | 北京铁科首钢轨道技术股份有限公司 | A kind of technique for solving the problems, such as tunnel-liner vault and coming to nothing |
| CN108558330A (en) * | 2018-05-22 | 2018-09-21 | 武汉源锦建材科技有限公司 | A kind of tunnel-liner vault band mould grouting microdilatancy grout material |
| CN108558330B (en) * | 2018-05-22 | 2021-01-08 | 武汉源锦建材科技有限公司 | Micro-expansion grouting material for grouting with mold at arch crown of tunnel lining |
| CN109250987A (en) * | 2018-10-19 | 2019-01-22 | 郝鹏飞 | A kind of tunnel band is molded into pulp material |
| CN109503092A (en) * | 2018-12-24 | 2019-03-22 | 河南城建学院 | Early strong impervious, cement base grouting material of height containing graphene oxide and preparation method thereof |
| CN112047700A (en) * | 2020-09-14 | 2020-12-08 | 江西龙正科技发展有限公司 | Rapid maintenance reinforcing adhesive for roads and bridges and preparation method thereof |
| CN112321245A (en) * | 2020-11-02 | 2021-02-05 | 江苏绿和环境科技有限公司 | Formula of sleeve grouting material |
| CN112390595A (en) * | 2020-12-04 | 2021-02-23 | 武汉理工大学 | Red facing mortar based on wet-milled superfine red brick slurry |
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| CN107935516B (en) | 2020-04-21 |
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