CN108947422A - A kind of dry powder blend material suitable for the grouting of assembled architecture reinforcing bar sleeve for connection - Google Patents
A kind of dry powder blend material suitable for the grouting of assembled architecture reinforcing bar sleeve for connection Download PDFInfo
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- CN108947422A CN108947422A CN201810913792.XA CN201810913792A CN108947422A CN 108947422 A CN108947422 A CN 108947422A CN 201810913792 A CN201810913792 A CN 201810913792A CN 108947422 A CN108947422 A CN 108947422A
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- Prior art keywords
- dry powder
- cement
- alkali
- free glass
- glass fibre
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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
- 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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- Chemical & Material Sciences (AREA)
- 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)
Abstract
The invention discloses a kind of alkali-free glass fibre powder and utilize the dry powder blend material for changing alkali-free glass fibre powder; the sleeve grouting material dry powder is mixed by following components; each component constitutes as follows by mass percentage: cement 40~45%, fine aggregate 45~55%, silicon ash 2~3%; superfine graining blast-furnace cinder 2~3%; swelling agent 2~3%, retarder 0.1~0.2%, defoaming agent 0.15~0.25%; water-cement ratio 0.24~0.26, water-reducing agent volume are the 2.5~3.5% of binder total amount.The dry powder blend material constitutes the also alkali-free glass fibre powder containing 0.8~1.1% by mass percentage, the diameter that the alkali-free glass fibre powder i.e. alkali-free glass fibre are obtained through chopping, grinding, screening: 9~13 μm, the powder that 30~50 μm of length.The present invention can make to form securely connection between reinforcing bar and reinforcing bar, reinforcing bar and sleeve, have good durability.
Description
The present invention is entitled " a kind of assembled architecture reinforcing bar sleeve for connection grouting material ", application number:
201611184010.0 the applying date: the divisional application of the patent of invention of 2016-12-19.
Technical field
The present invention relates to architecture engineering material technical field more particularly to a kind of sets for the connection of assembled architecture reinforcing bar
Cylinder grouting material.
Background technique
Assembled architecture refers to the building assembled in building site with component prefabricated in factory, compared with cast-in-place concrete knot
Structure, assembled architecture not only can be improved construction quality, reduce construction personnel, while can save resource, the energy, reduce pollution
And carbon emission, development prospect are wide.Sleeve grouting technique is the key that prefabricated components connection, to fabricated construction globality and is resisted
The performances such as pinking have a major impact.Sleeve and with ribbing is filled in using high flowability, early strong, high-strength, microdilatancy grouting material
In reinforcing bar gap, it is fixedly connected with reinforcing bar with sleeve after slurry condensation hardening, tensile strength and compression strength with higher,
Connect the advantages such as reliable, at low cost, construction efficiency is high.
It is also increasing to the demand of grouting material as the construction scale of China's assembled architecture constantly expands.State
Outer grouting material is had excellent performance, and is used widely in large scale engineering construction project at home, but price is generally higher；And it is existing
Domestic grouting material is many kinds of, and quality is irregular, and integral level and external also a certain distance are mainly manifested in and newly mix slurry
Liquid flowability is poor, water consumption bandwidth is smaller, intensity is insufficient, without early-age plastic expansion the problems such as, to construction quality and engineering into
Degree generates certain negative effect.
As the important connection medium between reinforcing bar and sleeve, the superiority and inferiority of grouting material performance directly affects making for prefabricated member
It is one of the key factor for promoting the development of China's assembled architecture with performance.Therefore, good economy performance is prepared in design, and upper flow regime is early
Strong high-strength, water consumption band is roomy, can be effectively controlled expansion, and effective loading end is big, and the grouting material not corroded to reinforcing bar is not only
It is the needs for improving reinforced bar sleeve grouting technique, also plays an important role to the development for pushing prefabricated concrete structure.
Summary of the invention
Technical problem solved by the invention is: providing a kind of good economy performance, upper flow regime, early strengthening and high strengthening, water consumption bandwidth
Greatly, it can be effectively controlled expansion, effective loading end is big, and the composite high performance grouting material that does not corrode to reinforcing bar and its core is dry
Powder mixture.
The technical scheme adopted by the invention is that: it is a kind of suitable for the dry of assembled architecture reinforcing bar sleeve for connection grouting material
Powder mixture is constituted as follows by mass percentage:
The cement is the compounding cement mixed by sulphate aluminium cement and ordinary portland cement, aluminium sulfate water
Mud accounts for the 7~9% of cement gross mass, and surplus is early-strength ordinary portland cement；
The specific surface area of the silicon ash is 20000~21000m2/ kg, the specific surface area of the superfine graining blast-furnace cinder
For 850~900m2/kg。
Above-mentioned dry powder blend material individually can be sold and use.
Preferably, the strength grade of the early-strength ordinary portland cement is 42.5, the intensity etc. of sulphate aluminium cement
Grade is 42.5.
Preferably, the fine aggregate is the quartz sand of continuous grading, and the partial size of the aggregate is less than 2.36mm.
Preferably, the retarder is sodium gluconate retarder.
Preferably, the defoaming agent is the powdered defoaming agent of organic silicon.
Preferably, the dry powder blend material constitutes the also alkali-free glass fibre containing 0.8~1.1% by mass percentage
Powder, the diameter that the alkali-free glass fibre powder i.e. alkali-free glass fibre are obtained through chopping, grinding, screening: 9~13 μm, length
30~50 μm of powder.
Correspondingly, complete sleeve grouting material technical solution is: a kind of assembled architecture reinforcing bar sleeve for connection grouting material,
It adds water and water-reducing agent to stir by dry powder blend material, and the dry powder blend material constitutes as follows by mass percentage:
The cement is the compounding cement mixed by sulphate aluminium cement and ordinary portland cement, aluminium sulfate water
Mud accounts for the 7~9% of cement gross mass, and surplus is early-strength ordinary portland cement；
The specific surface area of the silicon ash is 20000~21000m2/ kg, the specific surface area of the superfine graining blast-furnace cinder
For 850~900m2/kg。
Preferably, the water consumption accounts for the 24~26% of binder total amount；The cementitious material include cement, silicon ash and
Swelling agent.
Preferably, the water-reducing agent is polycarboxylate water-reducer, and volume is the 2.5~3.5% of binder total amount.Change diminishing
The water-reducing property of agent is good, and dosage is low.But it is selected on material mechanical performance without influence.
Preferably, the strength grade of the early-strength ordinary portland cement is 42.5, the intensity etc. of sulphate aluminium cement
Grade is 42.5.This is most common cement, for there is the occasion of Special use demand that can also select other rating cements.
Preferably, the fine aggregate is the quartz sand of continuous grading, and the partial size of the aggregate is less than 2.36mm.Fine aggregate
Such as river sand can be used.
Preferably, the retarder is sodium gluconate retarder.
Preferably, the defoaming agent is the powdered defoaming agent of organic silicon.
Preferably, the dry powder blend material constitutes the also alkali-free glass fibre containing 0.8~1.1% by mass percentage
Powder, the diameter that the alkali-free glass fibre powder i.e. alkali-free glass fibre are obtained through chopping, grinding, screening: 9~13 μm, length
30~50 μm of powder.
Due to using the technology described above, the invention has the characteristics that:
1, the present invention by cementitious material (sulphate aluminium cement and portland cement compound), fine aggregate (quartz sand),
Silicon ash and granulated blast-furnace slag, water-reducing agent, retarder, swelling agent and defoaming agent composition, solve grouting material high fluidity and protect
Holding property, contraction and the contradiction of expansion.Especially initial fluidity is especially good, early to have excellent performance by force, be in the milk it is full, can rapid shaping
Form is kept, there is positive and significance for assembled architecture construction.
2, the present invention fully meets the requirement of " reinforcing bar sleeve for connection grouting material " JG/T408-2013, initial flow degree
>=330mm, 30min slurry fluidity >=280mm；1d compression strength >=45MPa, 3d compression strength >=60MPa, 28d pressure resistance
Degree >=85MPa；3h vertical expansion ratio >=0.02%, for 24 hours vertical expansion ratio be 0.06%~0.5%, for 24 hours with 3h expansion rate difference
It is 0.02%~0.5%, and reinforcing bar non-corroding is acted on.
3, the present invention is for can satisfy " reinforced bar sleeve grouting connection application technology rule in reinforced bar sleeve grouting connection system
Journey " JGJ335-2015 regulation, residual deformation and maximum, force when the tensile strength of reinforced bar sleeve connector, simple tension are always stretched
Long rate, high stress repeatedly tension and compression when residual deformation and large deformation repeatedly tension and compression when the technical indicators such as residual deformation it is up to standard.
4, the grouting material mechanical property especially after addition alkali-free glass fibre powder significantly improves.And compared with the prior art
The mechanical property of addition steel fibre or common short glass fiber, simple glass fiber powder all significantly improves.
Specific embodiment
The range that the present invention is illustrated, but should not be construed as aforementioned body of the present invention below in conjunction with example be only limitted to
Lower embodiment, the techniques implemented on the basis of the foregoing are all within the scope of the present invention.
Embodiment 1:
Sleeve grouting material in the present embodiment for reinforcing bar connection is that water and water-reducing agent mix is added to form by grouting material dry powder,
The grouting material dry powder is mixed by following each component, and each component constitutes as follows by mass percentage: cement (aluminium sulfate water
The mass ratio of mud and portland cement is 8:92) 42.1%, fine aggregate (quartz sand) 50%, silicon ash 2.5%, superfine graining blast furnace
Slag 2.5%, swelling agent 2.5%, retarder 0.15%, defoaming agent 0.25%；Water-cement ratio 0.25, it is total that water-reducing agent mixes cementitious material
The 3.0% of amount.
Each component is measured to mixing according to the ratio, is stirred using glue sand agitator, mixing time is 4~5min, can be made
Obtain grouting material.
Embodiment 2:
Sleeve grouting material in the present embodiment for reinforcing bar connection is that water and water-reducing agent mix is added to form by grouting material dry powder,
The grouting material dry powder is mixed by following each component, and each component constitutes as follows by mass percentage: cement (aluminium sulfate water
The mass ratio of mud and portland cement is 7:93) 42.5%, fine aggregate (quartz sand) 50%, silicon ash 3.0%, superfine graining blast furnace
Slag 2.1%, swelling agent 2.0%, retarder 0.2%, defoaming agent 0.20%；Water-cement ratio 0.25, it is total that water-reducing agent mixes cementitious material
The 2.5% of amount.
Each component is measured to mixing according to the ratio, is stirred using glue sand agitator, mixing time is 4~5min, can be made
Obtain grouting material.
Embodiment 3:
Sleeve grouting material in the present embodiment for reinforcing bar connection is that water and water-reducing agent mix is added to form by grouting material dry powder,
The grouting material dry powder is mixed by following each component, and each component constitutes as follows by mass percentage: cement (aluminium sulfate water
The mass ratio of mud and portland cement is 7:93) 42.5%, fine aggregate (quartz sand) 50%, silicon ash 2.0%, superfine graining blast furnace
Slag 2.5%, swelling agent 2.6%, retarder 0.15%, defoaming agent 0.25%；Water-cement ratio 0.26, it is total that water-reducing agent mixes cementitious material
The 3.5% of amount.
Each component is measured to mixing according to the ratio, is stirred using glue sand agitator, mixing time is 4~5min, can be made
Obtain grouting material.
Embodiment 4:
Sleeve grouting material in the present embodiment for reinforcing bar connection is that water and water-reducing agent mix is added to form by grouting material dry powder,
The grouting material dry powder is mixed by following each component, and each component constitutes as follows by mass percentage: cement (aluminium sulfate water
The mass ratio of mud and portland cement is 8:92) 41.0%, fine aggregate (quartz sand) 50.7%, silicon ash 3.0%, superfine graining height
Furnace slag 3.0%, swelling agent 2.0%, retarder 0.15%, defoaming agent 0.15%；Water-cement ratio 0.23, water-reducing agent mixes cementitious material
The 2.5% of total amount.
Each component is measured to mixing according to the ratio, is stirred using glue sand agitator, mixing time is 4~5min, can be made
Obtain grouting material.
Embodiment 5:
Sleeve grouting material in the present embodiment for reinforcing bar connection is that water and water-reducing agent mix is added to form by grouting material dry powder,
The grouting material dry powder is mixed by following each component, and each component constitutes as follows by mass percentage: cement (aluminium sulfate water
The mass ratio of mud and portland cement is 8:92) 43.5%, fine aggregate (quartz sand) 47%, silicon ash 2.6%, superfine graining blast furnace
Slag 3.0%, swelling agent 2.5%, retarder 0.15%, defoaming agent 0.25%, alkali-free glass fibre powder 1%；Water-cement ratio 0.26,
Water-reducing agent mixes the 2.5% of binder total amount.
Each component is measured to mixing according to the ratio, is stirred using glue sand agitator, mixing time is 4~5min, can be made
Obtain grouting material.
By carrying out performance Indexs measure, measured items to reinforced bar sleeve grouting material obtained by above-mentioned each embodiment
Performance indicator testing result see the table below.
Embodiment 5 is repeated 2 times, sample 1 and 2 is respectively obtained.Then by the alkali-free glass fibre powder in embodiment 5
Being substituted for simple glass fiber powder, (glass fiber powder major parameter same as Example 5 is 9~13 μm of diameter, 30~50 μ of length
The powder of m), the short glass fiber that is substituted for length 2mm, the end band crotch steel fibre for being substituted for length 5mm diameter 1mm,
It is substituted for whisker, other conditions are same as Example 5, respectively obtain sample 3~6.The results of property of 6 groups of samples is as follows:
By above-mentioned comparison as it can be seen that can only significantly improve the mechanical property of sleeve grouting material using alkali-free glass fibre powder
Energy.Routinely experience should have the simple glass fiber powder of similar functions, short glass fiber etc. to be all not achieved and significantly increase
The effect of mechanical property.
Claims (9)
1. a kind of alkali-free glass fibre powder, described is the diameter obtained by alkali-free glass fibre through chopping, grinding, screening: 9~13
μm, the powder that 30~50 μm of length；For in assembled architecture reinforcing bar sleeve for connection grouting material, dosage to be by mass percentage
0.8~1.1%.
2. a kind of dry powder blend material suitable for assembled architecture reinforcing bar sleeve for connection grouting material, it is characterised in that: quality hundred
Divide as follows than constituting:
The dry powder blend material constitutes the also alkali-free glass fibre powder containing 0.8~1.1%, the alkali-free glass by mass percentage
The diameter that glass fiber powder i.e. alkali-free glass fibre are obtained through chopping, grinding, screening: 9~13 μm, the powder that 30~50 μm of length
End.
3. dry powder blend material according to claim 2, it is characterised in that: the cement is by sulphate aluminium cement and common
The compounding cement that portland cement mixes, sulphate aluminium cement account for the 7~9% of cement gross mass, and surplus is that early-strength is general
Logical portland cement.
4. dry powder blend material according to claim 2, it is characterised in that: the specific surface area of the silicon ash be 20000~
21000m2/ kg, the specific surface area of the superfine graining blast-furnace cinder are 850~900m2/kg。
5. dry powder blend material according to claim 3, it is characterised in that: the intensity of the early-strength ordinary portland cement
Grade is 42.5, and the strength grade of sulphate aluminium cement is 42.5.
6. dry powder blend material according to claim 2, it is characterised in that: the fine aggregate is the quartz sand of continuous grading,
The partial size of the aggregate is less than 2.36mm；The retarder is sodium gluconate retarder；The defoaming agent is organic silicon powder
Last shape defoaming agent.
7. according to the application method of dry powder blend material described in claim 2-6, it is characterised in that: the dry powder blend material add water and
Water-reducing agent stirring forms grouting material.
8. application method according to claim 7, it is characterised in that: described plus water amount accounts for the 24 of cementitious material total weight
~26%；The cementitious material includes cement, silicon ash and swelling agent.
9. application method according to claim 7, it is characterised in that: the water-reducing agent is polycarboxylate water-reducer, and volume is
The 2.5~3.5% of binder total amount.
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| CN201810913792.XA CN108947422A (en) | 2016-12-19 | 2016-12-19 | A kind of dry powder blend material suitable for the grouting of assembled architecture reinforcing bar sleeve for connection |
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| CN201611184010.0A CN106699077B (en) | 2016-12-19 | 2016-12-19 | A kind of assembled architecture bar connecting sleeve grouting material |
| CN201810913792.XA CN108947422A (en) | 2016-12-19 | 2016-12-19 | A kind of dry powder blend material suitable for the grouting of assembled architecture reinforcing bar sleeve for connection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109665780A (en) * | 2019-01-28 | 2019-04-23 | 上海恒福科技发展有限公司 | A kind of high flowability reinforcing steel bar connecting sleeve tube grouting material and preparation method thereof |
| CN111763047A (en) * | 2020-06-23 | 2020-10-13 | 哈尔滨工业大学 | Pouring paste slurry for prefabricated concrete structure steel bar connecting sleeve and preparation method and pouring method thereof |
| CN111763047B (en) * | 2020-06-23 | 2022-05-06 | 哈尔滨工业大学 | Pouring paste slurry for prefabricated concrete structure steel bar connecting sleeve and preparation method and pouring method thereof |
| CN112250394A (en) * | 2020-10-19 | 2021-01-22 | 同济大学 | Sleeve grouting material for high-performance steel bar connection and preparation method thereof |
| CN113087472A (en) * | 2021-03-18 | 2021-07-09 | 重庆市建筑科学研究院有限公司 | High-performance composite grouting material for prefabricated concrete structure |
| CN113213857A (en) * | 2021-04-30 | 2021-08-06 | 唐山学院 | High-performance iron tailing sand sleeve grouting material for fabricated building and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106699077B (en) | 2018-10-02 |
| CN106699077A (en) | 2017-05-24 |
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