CN106810176A - A kind of low viscosity upper flow regime strength cement-based grouting material - Google Patents
A kind of low viscosity upper flow regime strength cement-based grouting material Download PDFInfo
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- CN106810176A CN106810176A CN201710199099.6A CN201710199099A CN106810176A CN 106810176 A CN106810176 A CN 106810176A CN 201710199099 A CN201710199099 A CN 201710199099A CN 106810176 A CN106810176 A CN 106810176A
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- grouting material
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- upper flow
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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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention belongs to building material technology application field, and in particular to a kind of low viscosity upper flow regime strength cement-based grouting material.The present invention is prepared from by the component of following ratio of weight and number：40 ~ 50 parts of ordinary cement, 5 ~ 10 parts of alumina cement, 5 ~ 8 parts of microballon, 3 ~ 5 parts of silicon ash, 4 ~ 6 parts of swelling agent, 35 ~ 45 parts of quartz sand, 1 ~ 2 part of water reducer, 0.5 ~ 1.5 part of retarder, 0.1 ~ 0.3 part of water-loss reducer, 0.2 ~ 0.4 part of early strength agent, 0.2 ~ 0.3 part of plastic expansion agent, 0.1 ~ 0.3 part of redispersable latex powder, 0.1 ~ 0.3 part of defoamer, 0.1 ~ 0.2 part of fiber.Microballon particle diameter of the present invention is between cement and silicon ash, in the composite granule that three components of cement, microballon and silica flour are compounded, the interparticle hole of microballon filling concrete, silica flour fills the interparticle hole of microballon again, obtains the powder of dense packing effect, and ternary system causes that grouting material water film thickness increases, increase bulk density, release Free water, so as to reduce system viscosity, improves grouting material flow cone speed.
Description
Technical field
The invention belongs to building material technology application field, and in particular to a kind of low viscosity upper flow regime strength cement-based grouting material,
Such grouting material belongs to I type strength cement-based grouting material, has the advantages that low viscosity, upper flow regime, high intensity, high-durability.
Background technology
Strength cement-based grouting material is a kind of widely used material, is mainly used in the lower margin spiral shell of large scale equipment and precision equipment
The strengthening reconstruction of the anchoring of bolt, the steel construction perfusion, the back-grouting of Equipment Foundations and various building affixed with basis.With
The construction of China's nuclear power, water power, wind-powered electricity generation etc. heavy construction, introduce a large amount of foreign countries' sophisticated equipments, and these equipment set
Meter side and manufacturer can all require to use the grouting material with low viscosity upper flow regime, it is necessary to the flowing with flow cone method to grouting material
Property tested, low viscous grouting material keep high fluidity under the premise of can also keep the homogeneity of itself, not bleeding,
Do not settle, high-order funnel can not needed just to pour into small space in the case where viscosity is relatively low, improve construction technology
And accelerating construction progress.
For convenience of the national reference U.S. grouting material test stone ASTMC939 of engineer applied《Prepackaged concrete grouting material
Slump test method（Flow cone method）》, in existing standard GB50448-2008《Cement-based grouting material application technology specification》Base
On plinth, the grouting material new standard GB50448-2015 of compound China's national situation has been worked out《Cement-based grouting material application technology is advised
Model》, product standard and corresponding method of detection clearly are made that to I type grouting material in specification, it is that engineer applied detection and construction are carried
Foundation and standard are supplied.
Standard of the I type grouting material in GB50448-2015 and GB50448-2008 is as follows：
The content of the invention
For existing grouting material in high fluidity（Tangent-cone method）In the case of often have viscosity higher and water-retaining property, flow cone stream
Dynamic technical characterstic of the degree commonly greater than 35 seconds, the invention provides being widely used in large-scale construction project nuclear power, water power, wind-powered electricity generation etc.
The low viscosity strength cement-based grouting material that Equipment Foundations are fixed, meets GB50448-2015《Cement-based grouting material application technology specification》
In I type grouting material standard.
Present invention solves the technical problem that using following scheme：：
The present invention is prepared from by the component of following ratio of weight and number：
40 ~ 50 parts of ordinary cement,
5 ~ 10 parts of alumina cement,
5 ~ 8 parts of microballon,
3 ~ 5 parts of silicon ash,
4 ~ 6 parts of swelling agent,
35 ~ 45 parts of quartz sand,
1 ~ 2 part of water reducer,
0.5 ~ 1.5 part of retarder,
0.1 ~ 0.3 part of water-loss reducer,
0.2 ~ 0.4 part of early strength agent,
0.2 ~ 0.3 part of plastic expansion agent,
0.1 ~ 0.3 part of redispersable latex powder,
0.1 ~ 0.3 part of defoamer,
0.1 ~ 0.2 part of fiber.
The ordinary cement is P.O42.5 Portland cements.
The alumina cement is CA-50 aluminate cements, presetting period >=30min, final setting time≤6h.
The microballon is average grain diameter≤1.2mm.Microballon used of the invention is given birth to for Beijing Zheng Yuan Yi Qing scientific ＆ trading Co., Ltd.s
The fine microballons of MS1250 of product
The silicon ash is 95 grades of original state SILICA FUMEs, specific surface area >=18m3/kg, 150 ~ 200kg/m3 of apparent density, average grain diameter
0.1~0.2μm。
The swelling agent be one kind in calcium sulphoaluminate class swelling agent, oxidation magnesium types swelling agent, lime swelling agent or
More than one mixture
The quartz sand is siliceous quartz sand, as follows according to percentage by weight ratio：
20 ~ 40 mesh 20%,
40 ~ 70 mesh 60%,
70 ~ 100 mesh 20%.
The water reducer is polycarboxylic acids powder water reducer.
The retarder is in tartaric acid, sodium tartrate, sodium gluconate, urea, borax, calcium nitrate, calgon
One or more mixtures.
The water-loss reducer is hydroxypropyl methyl cellulose, and viscosity is≤100000Pa .s.
The early strength agent is one or more the mixture in sodium sulphate, calcium formate, lithium sulfate, lithium carbonate.
The plastic expansion agent is the yellow powder plastic expansion agent of Beijing Rong Tai letters Science and Technology Ltd. production.
The redispersable latex powder is one or more in vinyl acetate ethylene copolymer, acrylic copolymer.
The defoamer is organic silicon defoamer.
The fiber is that length is the polypropylene fibre of 3 ~ 6mm.
Low viscosity upper flow regime strength cement-based grouting material of the invention when in use, adds the 15% of grouting material weight mixing water,
Equipment Foundations are poured into by after stirring to use.
The I type grouting material that the present invention is developed on the basis of this standard model, performance indications are as follows：Flow cone fluidity is initial
Value≤35s, 30 minutes fluidity≤50s, 3h vertical expansion ratios 0.1% ~ 3.5%, the difference 0.02% of the swell value of 3h and 24h ~
0.50%, compression strength 1d >=15MPa, 3d >=30MPa, 28d >=50MPa, chloride ion content ＜ 0.1%, bleeding rate is 0.
The positive effect of the present invention is as follows：
Using ordinary cement and the composite effect of alumina cement in technology path of the invention, it is ensured that the early strength of grouting material
And later strength, using the double-doped of common swelling agent and plastic expansion agent, solve grouting material 3h and 24 hours vertical expansion ratios
Problem, microballon particle diameter is micro- in the composite granule of the three components compounding of cement, microballon and silica flour between cement and silicon ash
The interparticle hole of pearl filling concrete, silica flour fills the interparticle hole of microballon again, obtains the powder of dense packing effect, microballon and silicon
Ash be with continuous ionic exchange it is ultra-fine, with full chondritic, surface is globular glass body, and particle diameter is superfine, with fabulous
Filling and ball lubricating effect, ternary system cause grouting material water film thickness increase, increase bulk density, be released from by
Water, so as to reduce system viscosity, improves grouting material flow cone speed.Other are auxiliary for retarder, early strength agent, water-loss reducer, fiber etc. simultaneously
Help the addition of material so that under the premise of service behaviour is ensured, other indexs such as mechanical property and endurance quality are obtained grouting material
Meet.
The low viscosity upper flow regime strength cement-based grouting material that the present invention is provided, uses 0.13 ~ 0.15 ratio of water to material, by water during construction
Sequentially added with grouting material and stirred, grouting material meets GB50448-2015《Cement-based grouting material application technology specification》In
The standard regulation of I type grouting material.
Low viscosity upper flow regime strength cement-based grouting material of the invention viscosity lazy flow in practical application is high, can save a high position
The use of funnel can pour into small space.
Specific embodiment
The present invention is described further with reference to specific embodiment, but is not used in limitation the scope of the present invention.
Embodiment 1：
The ratio of weight and number of each group is as follows：
40 parts of P.O42.5 cement,
5 parts of CA-50 alumina cements,
8 parts of MS1250 microballons,
5 parts of original state silicon ash,
4 parts of sulphoaluminate expander,
20 ~ 100 45 parts of mesh quartz sands,
1 part of polycarboxylate water-reducer,
1 part of sodium gluconate,
0.5 part of tartaric acid,
0.1 part of hydroxypropyl methyl cellulose,
0.1 part of calcium formate,
0.1 part of lithium carbonate,
0.3 part of plastic expansion agent,
0.3 part of redispersable latex powder,
0.1 part of defoamer,
0.1 part of polypropylene fibre.
Experimental technique is as follows：
The grouting material for preparing 1.8kg is weighed by above-mentioned number, 270g mixing waters are added, is stirred using planetary cement mortar
Machine is stirred, and stirs 240s by auto-programming, and grouting material performance test is then carried out under 20 DEG C of ambient temperature conditions.
The grouting material performance tested by aforementioned test methods is as follows：
Flowing cone initial flow degree is 29s, 30min fluidities 45s, 3h vertical expansion ratio 1.3%, the swell value of 3h and 24h
0.04%, 1d compression strength 22MPa, 3d compression strength 42MPa, 28d compression strength 75MPa, the % of chloride ion content 0.04 are differed from, is secreted
Water rate is 0.
Embodiment 2：
The ratio of weight and number of each group is as follows：
45 parts of P.O42.5 cement,
10 parts of CA-50 alumina cements,
5 parts of MS1250 microballons,
3 parts of original state silicon ash,
3 parts of MgO expansion agent,
1 part of sulphoaluminate expander
20 ~ 100 35 parts of mesh quartz sands,
2 parts of polycarboxylate water-reducer,
0.25 part of borax,
0.5 part of urea,
0.3 part of hydroxypropyl methyl cellulose,
0.2 part of lithium sulfate,
0.2 part of sodium sulphate
0.3 part of plastic expansion agent,
0.2 part of redispersable latex powder,
0.3 part of defoamer,
0.1 part of polypropylene fibre.
Experimental technique is as follows：
The grouting material for preparing 1.8kg is weighed by above-mentioned number, 270g mixing waters are added, is stirred using planetary cement mortar
Machine is stirred, and stirs 240s by auto-programming, and grouting material performance test is then carried out under 20 DEG C of ambient temperature conditions
The grouting material performance tested by aforementioned test methods is as follows
Flowing cone initial flow degree is 32s, 30min fluidities 47s, 3h vertical expansion ratio 1.2%, the swell value of 3h and 24h
0.05%, 1d compression strength 26MPa, 3d compression strength 47MPa, 28d compression strength 82MPa, the % of chloride ion content 0.03 are differed from, is secreted
Water rate is 0.
Embodiment 3：
The ratio of weight and number of each group is as follows：
40 parts of P.O42.5 cement,
7 parts of CA-50 alumina cements,
6 parts of MS1250 microballons,
7 parts of original state silicon ash,
6 parts of lime swelling agent,
20 ~ 100 40 parts of mesh quartz sands,
1.5 parts of polycarboxylate water-reducer,
0.5 part of sodium tartrate,
0.5 part of calgon
0.5 part of sodium gluconate
0.2 part of hydroxypropyl methyl cellulose,
0.1 part of calcium formate,
0.2 part of lithium sulfate
0.25 part of plastic expansion agent,
0.3 part of redispersable latex powder,
0.2 part of defoamer,
0.15 part of polypropylene fibre.
Experimental technique is as follows：The grouting material for preparing 1.8kg is weighed by above-mentioned number, 270g mixing waters are added, used
Planetary cement mortar mixer stirring, and 240s is stirred by auto-programming, then filled under 20 DEG C of ambient temperature conditions
Size performance is tested
The grouting material performance tested by aforementioned test methods is as follows
1st, flowing cone initial flow degree is 32s, 30min fluidities 41s, 3h vertical expansion ratio 1.1%, the swell value of 3h and 24h
0.08%, 1d compression strength 24MPa, 3d compression strength 45MPa, 28d compression strength 78MPa, the % of chloride ion content 0.06 are only differed from,
Bleeding rate is 0.
Embodiment 4：
The ratio of weight and number of each group is as follows：
50 parts of P.O42.5 cement,
10 parts of CA-50 alumina cements,
5 parts of MS1250 microballons,
5 parts of original state silicon ash,
4 parts of sulphoaluminate expander,
2 parts of MgO expansion agent
20 ~ 100 40 parts of mesh quartz sands,
2 parts of polycarboxylate water-reducer,
1 part of tartaric acid,
0.5 part of calcium nitrate,
0.3 part of hydroxypropyl methyl cellulose,
0.3 part of lithium sulfate,
0.2 part of plastic expansion agent,
0.1 part of redispersable latex powder,
0.3 part of defoamer,
0.1 part of polypropylene fibre fiber.
Experimental technique is as follows：
The grouting material for preparing 1.8kg is weighed by above-mentioned number, 270g mixing waters are added, is stirred using planetary cement mortar
Machine is stirred, and stirs 240s by auto-programming, and grouting material performance test is then carried out under 20 DEG C of ambient temperature conditions
The grouting material performance tested by aforementioned test methods is as follows：
Flowing cone initial flow degree is 33s, 30min fluidities 48s, 3h vertical expansion ratio 1.0%, the swell value of 3h and 24h
0.04%, 1d compression strength 28MPa, 3d compression strength 41MPa, 28d compression strength 74MPa, the % of chloride ion content 0.03 are differed from, is secreted
Water rate is 0.
Above the present invention is described in detail with a general description of the specific embodiments, but in the present invention
On the basis of, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, not
Deviate these modifications or improvements on the basis of present invention spirit, belong to the scope of protection of present invention.
Claims (9)
1. a kind of low viscosity upper flow regime strength cement-based grouting material, it is characterised in that its prepared by the component of following ratio of weight and number and
Into：
40 ~ 50 parts of ordinary cement,
5 ~ 10 parts of alumina cement,
5 ~ 8 parts of microballon,
3 ~ 5 parts of silicon ash,
4 ~ 6 parts of swelling agent,
35 ~ 45 parts of quartz sand,
1 ~ 2 part of water reducer,
0.5 ~ 1.5 part of retarder,
0.1 ~ 0.3 part of water-loss reducer,
0.2 ~ 0.4 part of early strength agent,
0.2 ~ 0.3 part of plastic expansion agent,
0.1 ~ 0.3 part of redispersable latex powder,
0.1 ~ 0.3 part of defoamer,
0.1 ~ 0.2 part of fiber.
2. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 1, it is characterised in that the ordinary cement is
P.O42.5 Portland cements, the alumina cement is CA-50 aluminate cements, presetting period >=30min, final setting time
≤6h。
3. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 2, it is characterised in that the microballon is average
Particle diameter≤1.2mm, the microballon is the fine microballons of MS1250 of Beijing Zheng Yuan Yi Qing scientific ＆ trading Co., Ltd.s production.
4. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 3, it is characterised in that the silicon ash is 95 grades
Original state SILICA FUME, specific surface area >=18m3/kg, 150 ~ 200kg/m3 of apparent density, 0.1 ~ 0.2 μm of average grain diameter.
5. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 4, it is characterised in that the swelling agent is sulphur
The mixture of the one or more than one in calcium aluminate type expansion agent, oxidation magnesium types swelling agent, lime swelling agent.
6. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 5, it is characterised in that the quartz sand is silicon
Matter quartz sand, it is as follows according to percentage by weight ratio：
20 ~ 40 mesh 20%,
40 ~ 70 mesh 60%,
70 ~ 100 mesh 20%.
7. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 6, it is characterised in that the water reducer is poly-
Carboxylic acid powder water reducer, the retarder is tartaric acid, sodium tartrate, sodium gluconate, urea, borax, calcium nitrate, six inclined phosphorus
One or more mixtures in sour sodium, the water-loss reducer is hydroxypropyl methyl cellulose, and viscosity is≤100000Pa .s, institute
It is one or more the mixture in sodium sulphate, calcium formate, lithium sulfate, lithium carbonate, the plastic expansion to state early strength agent
Agent is the yellow powder plastic expansion agent of Beijing Rong Tai letters Science and Technology Ltd. production, and the redispersable latex powder is acetic acid
One or more in Ethylene vinyl copolymer, acrylic copolymer.
8. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 7, it is characterised in that the defoamer is to have
Machine silicon defoaming agent.
9. a kind of low viscosity upper flow regime strength cement-based grouting material according to claim 8, it is characterised in that the fiber is length
It is the polypropylene fibre of 3 ~ 6mm.
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