CN106630871A - Bed mortar for filling gap between prefabricated members and preparation method thereof - Google Patents
Bed mortar for filling gap between prefabricated members and preparation method thereof Download PDFInfo
- Publication number
- CN106630871A CN106630871A CN201611120568.2A CN201611120568A CN106630871A CN 106630871 A CN106630871 A CN 106630871A CN 201611120568 A CN201611120568 A CN 201611120568A CN 106630871 A CN106630871 A CN 106630871A
- Authority
- CN
- China
- Prior art keywords
- prefabricated member
- agent
- seat slurry
- filling
- member gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
-
- 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
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
Abstract
The invention discloses a bed mortar for filling a gap between prefabricated members and a preparation method thereof. The bed mortar is composed of the following components in parts by weight: 35 to 45 parts of high early strength cement, 35 to 58 parts of fine aggregate, 1 to 5 parts of early strength agent, 0.5 to 1 part of water reducer, 0.3 to 0.5 part of thixotropic plastic stabilizing agent, 0.1 to 0.5 parts of pore regulating compound, 5 to 15 parts of rubber powder, and 0.3 to 0.8 part of chemical short fiber. The bed mortar, which is prepared high early strength cement and high grade aggregate and is subjected to slurry thixotropic improvement and pore regulation, satisfies the special requirements of the construction technology of prefabricated members on the workability and mechanical properties of bed mortar, has the advantages of high binding strength, good thermal insulation performance, and excellent anti-cracking performance, and further improves the construction efficiency and overall quality of prefabricated building construction engineering.
Description
Technical field
The invention belongs to building material field, more particularly to a kind of seat slurry for filling prefabricated member gap and its
Preparation method.
Background technology
In recent years, assembled architecture had the advantages that to be quickly grown speed of application is fast, quality is good, pollution is little because of it,
Become one of important directions of national building industry development.Reinforced bar sleeve grouting connection is the important ring of assembled architecture construction
Section, before its construction, need to block to the outer of component connection and the space of inside, to avoid spillage, filling during grouting
The quality problems such as leakiness；Meanwhile, the early strength of seat slurry plugging material will directly affect whole assembled with final bearing force
The efficiency of construction and speed of application of engineering.
At present, the development of assembled architecture is also in starting stage, the pass of the seat slurry to filling prefabricated member gap
Note is also less.At present in the construction of seat slurry, practices well is blocked using common cement masonry mortar, although material cost
It is relatively low, but its exist construction workability can poor, setting time length, early strength lift slow, the low shortcoming of final strength.
Find after contrast related invention patent and research data, produce for the seat slurry that assembled architecture engineering construction is adopted
Product research is few.As ZL201310306381.1 proposes a kind of quickly-hardened type filling material and its preparation method and application method,
But it is mainly used in Mine ventilator engineering, and final compression strength is only 3～4MPa, and is not suitable for being filled in assembled
Component space；ZL201410185159.5 proposes the grouting material and preparation method thereof reinforced for road, its early strength compared with
Height, but fluidity is excessive, can not solve the Preserving problems of sulphate aluminium cement service behaviour during low fluidity；
ZL201010207999.9 proposes a kind of polymer emulsion modified rapid repair mortar and preparation method thereof, and it is equally existed just
Beginning fluidity is improper, the operating time is too short, service behaviour is difficult to meet the problem of engineer applied demand.
In order to solve demand of the special construction technology of prefabricated member to material, a kind of favorable working performance, early stage are invented
Strength enhancing is fast, adhesion strength is high, the seat slurry that good heat insulating, cracking resistance are excellent, can further lift assembled architecture and apply
The total quality of work engineering.
The content of the invention
The construction quality problem of component space filling in order to solve assembled architecture, the invention provides a kind of be used to fill out
Fill seat slurry of assembled component space and preparation method thereof.
The invention provides a kind of seat slurry for filling prefabricated member gap, by it is following calculate by weight into
It is grouped into：
The quick-hardening cement is quick hardening sulphoaluminate cement；
The fine aggregate is mass ratio 1:2～4 0.1～0.6mm river sands and the mixing of 0.6～2.36mm river sands.
The early strength agent is aluminum sulfate and sodium sulphate or aluminum sulfate and calcium formate with 1:Mixing of 1～2 weight than preparation
Thing.
The water reducer is mass ratio 1:3～4 low research work of air entrained type polycarboxylic acids is mixed with collapse protective poly-carboxylic acid powder water reducer
Compound.
The thixotroping surely moulds agent for mass ratio 1:The mixing of 2～5 hydroxypropyl starch ether and acidified modified sodium bentonite
Thing.
The hole regulating compound is mass ratio 1:3～4 hydrophobic titanium dioxide silicon defoaming agent and triterpenoid saponin bleed
The mixture of agent.
The rubber powder is the one kind in redispersible vinyl acetate/ethylene copolymer rubber powder, acrylic rubber powder.
The staple fibre is the polypropylene fibre of 3～9mm length.
A kind of preparation method for filling the seat slurry in prefabricated member gap of the present invention, comprises the following steps：
(1) quick-hardening cement, fine aggregate, early strength agent, water reducer, thixotroping are weighed by weight surely moulds agent, hole regulation and control chemical combination
Thing, rubber powder, staple fibre；
(2) pour load weighted each component into mixer, the order that material is poured into do not required, stir 3～5 minutes,
It is well mixed, obtains final product the seat slurry.
The application process for filling the seat slurry in prefabricated member gap, comprises the following steps：By ratio of water to material
0.12～0.13 add water stirring after can construction.
The present invention is improved using quick-hardening cement system, preferred graded aggregate, slurry thixotropic property and pore structure regulates and controls etc.
The seat slurry that technology is developed both had met the special construction technology of prefabricated member to material service behaviour and the spy of mechanical property
It is different to require, also with the advantage that adhesion strength height, good heat insulating, cracking resistance are excellent, can further lift assembled architecture and apply
The total quality of work engineering.
Specifically, it is of the invention relative to prior art, with advantage following prominent：
(1) slurry has more preferable workability.By using research work of air entrained type and collapse protection type composite water-reducing agent, priority
Collective effect with aggregate, when the initial jumping table fluidity of mortar that can make the slurry is 140～150mm, workability is excellent,
Slurry is abundant, easily strike off, and surely moulds after agent especially with thixotroping, during the low fluidity of here 1.5h can also can be kept not lose, and solves
Aluminium sulfate system setting time too fast shortcoming, it is to avoid because hardening the too fast waste for causing in construction, while in construction
More materials can be once stirred, efficiency of construction is also further increased.The characteristic had both met that prefabricated member is special to be applied
Performance requirement of the work technique to material, and with longer construction operation time.
(2) the characteristics of slurry has early strength rapid growth.The present invention adopts quick-hardening cement, and compound use morning
Strong agent, compared with common masonry mortar, its early strength rises faster, and 1d intensity is up to more than 30MPa, and 3d intensity is reachable
More than 40MPa, can meet quickly carries out the demand of subsequent technique construction in assembled architecture engineering.
(3) slurry has the advantages that adhesion strength is high.By strict control ratio of water to material, mix appropriate redispersible
Rubber powder, has been obviously improved the adhesion strength of seat slurry, can increase substantially prefabricated components, sleeve grouting that the material is in contact with it
The cohesive force of material, improves the construction quality of assembled architecture.
(4) slurry has the advantages that sealing thermal insulation.From air-entraining water-reducing agent and hole regulating compound, realize
The accuracy controlling of mortar interior porosity, two kinds of components have splendid heat-insulating property in the system, improve component inside
The curing temperature of grouting material, is conducive to the lifting of grouting material intensity in the temperature in space and follow-up grouting process.
(5) the slurry cracking resistance is excellent.The staple fibre of incorporation has good dispersiveness, does not affect the work of mortar
The property made, forms a kind of network system of uniform random distribution in mortar, under conditions of compression strength is not reduced, effectively improves
The cracking resistance of mortar.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated.
In each embodiment：
Fine aggregate is mass ratio 1:2～4 0.1～0.6mm river sands and the mixing of 0.6～2.36mm river sands.Wherein, implement
Example 1 to 5 is mass ratio 1:2 0.1～0.6mm river sands and the mixing of 0.6～2.36mm river sands；Embodiment 6 is mass ratio 1:3
0.1～0.6mm river sands and 0.6～2.36mm river sands mixing.
Early strength agent is aluminum sulfate and sodium sulphate or aluminum sulfate and calcium formate 1：Mixture of 1～2 weight than preparation；Its
In, embodiment 1 to 4 is aluminum sulfate and sodium sulphate 1：Mixture of 1 weight than preparation；Embodiment 5 to 6 is aluminum sulfate and formic acid
Calcium 1：Mixture of 2 weight than preparation.
Embodiment 1
For filling the seat slurry in prefabricated member gap, mixed by the component of following weight portion：
Wherein, quick-hardening cement is quick hardening sulphoaluminate cement；Water reducer is 1:3 research work of air entrained type polycarboxylic acids and the poly- carboxylic of collapse protection type
Sour powder diminishing agent composition；Thixotroping surely moulds agent for 1:2 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures；Hole
Gap regulating compound is mass ratio 1:3 hydrophobic titanium dioxide silicon defoaming agent and the mixture of triterpenoid saponin air entraining agent；Rubber powder is
Redispersible vinyl acetate/ethylene copolymer rubber powder；Staple fibre is the polypropylene fibre of 3mm length.
Embodiment 2
For filling the seat slurry in prefabricated member gap, mixed by the component of following weight portion：
Wherein, quick-hardening cement is quick hardening sulphoaluminate cement；Water reducer is 1:4 research work of air entrained type polycarboxylic acids and the poly- carboxylic of collapse protection type
Sour powder diminishing agent composition；Thixotroping surely moulds agent for 1:2 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures；Hole
Gap regulating compound is mass ratio 1:3 hydrophobic titanium dioxide silicon defoaming agent and the mixture of triterpenoid saponin air entraining agent；Rubber powder is
Acrylic rubber powder；Staple fibre is the polypropylene fibre of 3mm length.
Embodiment 3
For filling the seat slurry in prefabricated member gap, mixed by the component of following weight portion：
Wherein, quick-hardening cement is quick hardening sulphoaluminate cement；Water reducer is 1:3 research work of air entrained type polycarboxylic acids and the poly- carboxylic of collapse protection type
Sour powder diminishing agent composition；Thixotroping surely moulds agent for 1:3 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures；Hole
Gap regulating compound is mass ratio 1:3 hydrophobic titanium dioxide silicon defoaming agent and the mixture of triterpenoid saponin air entraining agent；Rubber powder is
Redispersible vinyl acetate/ethylene copolymer rubber powder；Staple fibre is the polypropylene fibre of 6mm length.
Embodiment 4
For filling the seat slurry in prefabricated member gap, mixed by the component of following weight portion：
Wherein, quick-hardening cement is quick hardening sulphoaluminate cement；Water reducer is 1:3 research work of air entrained type polycarboxylic acids and the poly- carboxylic of collapse protection type
Sour powder diminishing agent composition；Thixotroping surely moulds agent for 1:4 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures；Hole
Gap regulating compound is mass ratio 1:3 hydrophobic titanium dioxide silicon defoaming agent and the mixture of triterpenoid saponin air entraining agent；Rubber powder is
Acrylic rubber powder；Staple fibre is the polypropylene fibre of 6mm length.
Embodiment 5
For filling the seat slurry in prefabricated member gap, mixed by the component of following weight portion：
Wherein, quick-hardening cement is quick hardening sulphoaluminate cement；Water reducer is 1:4 research work of air entrained type polycarboxylic acids and the poly- carboxylic of collapse protection type
Sour powder diminishing agent composition；Thixotroping surely moulds agent for 1:5 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures；Hole
Gap regulating compound is mass ratio 1:4 hydrophobic titanium dioxide silicon defoaming agent and the mixture of triterpenoid saponin air entraining agent；Rubber powder is
Acrylic rubber powder；Staple fibre is the polypropylene fibre of 9mm length.
Embodiment 6
For filling the seat slurry in prefabricated member gap, mixed by the component of following weight portion：
Wherein, quick-hardening cement is quick hardening sulphoaluminate cement；Water reducer is 1:3 research work of air entrained type polycarboxylic acids and the poly- carboxylic of collapse protection type
Sour powder diminishing agent composition；Thixotroping surely moulds agent for 1:4 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures；Hole
Gap regulating compound is mass ratio 1:4 hydrophobic titanium dioxide silicon defoaming agent and the mixture of triterpenoid saponin air entraining agent；Rubber powder is
Acrylic rubber powder；Staple fibre is the polypropylene fibre of 9mm length.
Comparative example 1
From existing seat slurry test performance, as a comparison case：
Comparative example 2
From existing seat slurry test performance, as a comparison case：
Wherein, quick-hardening cement is quick hardening sulphoaluminate cement；Water reducer is 1:3 research work of air entrained type polycarboxylic acids and the poly- carboxylic of collapse protection type
Sour powder diminishing agent composition；Thixotroping surely moulds agent for 1:4 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures；It is early
Strong agent is aluminum sulfate and calcium formate 1：Mixture of 2 weight than preparation；Thixotroping surely moulds agent for 1:5 hydroxypropyl starch ether and acid
Change modified Na-bentonite earth mixtures.
The seat slurry for filling prefabricated member gap obtained by with embodiment 1～6 and the common seat slurry of comparative example,
Performance, mechanical property, heat-insulating property and deformation performance contrast test are operated, its method of testing is according to GB/T2419-2005
《Flow of cement mortar testing standard》、GB/T 17671-1999《Cement mortar strength test》、JG/T230-2007《Premixing
Mortar》And GB20473-2006《Building heat-insulating mortar》Requirement be measured.Main result is shown in Table 1.
Table 1 is used to fill the seat size performance test result in prefabricated member gap
The as shown by data of table 1：Assembled structure is met using the seat slurry for filling prefabricated member gap of the present invention
Particular/special requirement of the special construction technology of part to material service behaviour and mechanical property, the initial jumping table fluidity of mortar is 140～
During 150mm, workability is excellent, and slurry enriches, easily strikes off, and 1.5h can be kept not lose；Early strength rises soon, and 1d intensity can
Up to more than 30MPa, 3d intensity is up to more than 40MPa；In addition, also having adhesion strength height, good heat insulating, cracking resistance excellent
Advantage, can further lift the total quality of assembled architecture construction work.
Claims (10)
1. a kind of seat slurry for filling prefabricated member gap, it is characterised in that by the following composition for calculating by weight
Composition：
30～45 parts of quick-hardening cement,
35～58 parts of fine aggregate,
1～5 part of early strength agent,
0.5～1 part of water reducer,
0.3～0.5 part of agent is surely moulded in thixotroping,
0.1～0.5 part of hole regulating compound,
5～15 parts of rubber powder,
0.3～0.8 part of staple fibre.
2. a kind of seat slurry in filling prefabricated member gap according to claim 1, it is characterised in that the fast hard water
Mud is quick hardening sulphoaluminate cement；The fine aggregate is mass ratio 1:2～4 0.1～0.6mm river sands and 0.6～2.36mm rivers
The mixture of sand.
3. the seat slurry in a kind of filling prefabricated member gap according to claim 2, it is characterised in that described strong early
Agent is aluminum sulfate and sodium sulphate or aluminum sulfate and calcium formate with 1:The mixture that 1～2 mass ratio is prepared.
4. a kind of seat slurry in filling prefabricated member gap according to claim 3, it is characterised in that the water reducer
For mass ratio 1:3～4 low research work of air entrained type polycarboxylic acids and the mixture of collapse protective poly-carboxylic acid powder water reducer.
5. the seat slurry in a kind of filling prefabricated member gap according to claim 4, it is characterised in that the thixotroping is steady
Modeling agent is mass ratio 1:2～5 hydroxypropyl starch ether and acidified modified Na-bentonite earth mixtures.
6. the seat slurry in a kind of filling prefabricated member gap according to claim 5, it is characterised in that the hole is adjusted
Control compound is mass ratio 1:3～4 hydrophobic titanium dioxide silicon defoaming agent and the mixture of triterpenoid saponin air entraining agent.
7. the seat slurry in a kind of filling prefabricated member gap according to claim 6, it is characterised in that the rubber powder is
One kind in redispersible vinyl acetate/ethylene copolymer rubber powder, acrylic rubber powder.
8. the seat slurry in a kind of filling prefabricated member gap according to claim 7, it is characterised in that the chemistry is short
Fiber is the polypropylene fibre of 3～9mm length.
9. a kind of preparation method for filling the seat slurry in prefabricated member gap described in claim 1 to 8, its feature exists
In comprising the following steps.
（1）Quick-hardening cement, fine aggregate, early strength agent, water reducer, thixotroping are weighed by weight surely moulds agent, hole regulating compound, glue
Powder, staple fibre；
（2）Pour load weighted each component into mixer, the order that material is poured into is not required, stir 3～5 minutes, mixing
Uniformly, the seat slurry is obtained final product.
10. a kind of application process for filling the seat slurry in prefabricated member gap described in any one of claim 1 to 8,
Characterized in that, the seat slurry is used to add water after stirring by ratio of water to material 0.12 ~ 0.13 when filling prefabricated member gap
Construction.
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| CN201611120568.2A CN106630871B (en) | 2016-12-08 | 2016-12-08 | A kind of seat slurry and preparation method thereof for filling prefabricated member gap |
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|---|---|---|---|
| CN201611120568.2A CN106630871B (en) | 2016-12-08 | 2016-12-08 | A kind of seat slurry and preparation method thereof for filling prefabricated member gap |
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| CN106630871B CN106630871B (en) | 2019-11-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451842A (en) * | 2019-08-02 | 2019-11-15 | 江苏苏博特新材料股份有限公司 | A kind of sprayed construction viscosity-adjusting agent admixture and preparation method thereof |
| CN112125640A (en) * | 2020-09-18 | 2020-12-25 | 湖北工业大学 | Early-strength seat slurry suitable for prefabricated part connection and preparation method thereof |
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| EP0526354A1 (en) * | 1991-07-23 | 1993-02-03 | Dune Travaux Specialises | Supple mortar for internal and/or external covering constructions of cement, beton, steel or cast iron and process for using the same |
| CN101830684A (en) * | 2010-05-26 | 2010-09-15 | 江苏博特新材料有限公司 | Super early strength polymer rapid-patching motar material |
| CN103121818A (en) * | 2013-02-27 | 2013-05-29 | 同济大学 | Assembled splicing joint sealing material for building components and application thereof |
| CN103159441A (en) * | 2013-02-27 | 2013-06-19 | 同济大学 | Rebar grouting connecting element sealing materials and preparation method and application thereof |
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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0526354A1 (en) * | 1991-07-23 | 1993-02-03 | Dune Travaux Specialises | Supple mortar for internal and/or external covering constructions of cement, beton, steel or cast iron and process for using the same |
| CN101830684A (en) * | 2010-05-26 | 2010-09-15 | 江苏博特新材料有限公司 | Super early strength polymer rapid-patching motar material |
| CN103121818A (en) * | 2013-02-27 | 2013-05-29 | 同济大学 | Assembled splicing joint sealing material for building components and application thereof |
| CN103159441A (en) * | 2013-02-27 | 2013-06-19 | 同济大学 | Rebar grouting connecting element sealing materials and preparation method and application thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451842A (en) * | 2019-08-02 | 2019-11-15 | 江苏苏博特新材料股份有限公司 | A kind of sprayed construction viscosity-adjusting agent admixture and preparation method thereof |
| CN110451842B (en) * | 2019-08-02 | 2021-10-01 | 江苏苏博特新材料股份有限公司 | Viscosity adjusting admixture for jetting construction and preparation method thereof |
| CN112125640A (en) * | 2020-09-18 | 2020-12-25 | 湖北工业大学 | Early-strength seat slurry suitable for prefabricated part connection and preparation method thereof |
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| CN106630871B (en) | 2019-11-05 |
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