CN109553367A - A kind of winter construction reinforcing bar sleeve for connection grouting material - Google Patents
A kind of winter construction reinforcing bar sleeve for connection grouting material Download PDFInfo
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- CN109553367A CN109553367A CN201811560183.7A CN201811560183A CN109553367A CN 109553367 A CN109553367 A CN 109553367A CN 201811560183 A CN201811560183 A CN 201811560183A CN 109553367 A CN109553367 A CN 109553367A
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- reinforcing bar
- bar sleeve
- grouting material
- connection
- connection grouting
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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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/062—Oxides, Hydroxides of the alkali or alkaline-earth metals
- C04B22/064—Oxides, Hydroxides of the alkali or alkaline-earth metals of the alkaline-earth metals
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/085—Acids or salts thereof containing nitrogen in the anion, e.g. nitrites
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/10—Acids or salts thereof containing carbon in the anion
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
-
- 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
- C04B28/34—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 cold phosphate binders
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to a kind of winter construction reinforcing bar sleeve for connection grouting materials, are the freezing points that reinforcing bar sleeve for connection grouting material is reduced by the use of calcium nitrate and/or sodium sulfocyanate；Dosage accounts for the 0.1 ~ 1.0% of the gross mass of the reinforcing bar sleeve for connection grouting material.By reducing the freezing point of slurry hole solution, guarantee that hydration reaction can occur under subzero temperature for cementitious material；Winter construction reinforcing bar sleeve for connection grouting material of the present invention, early strength development is fast under cryogenic conditions in winter, and later strength is high, good with reinforced bar sleeve matching, it is minimum meet -10 DEG C of winter under the conditions of the use be in the milk of reinforcing bar sleeve for connection.
Description
Technical field
The invention belongs to building fields, and in particular to a kind of winter construction reinforcing bar sleeve for connection grouting material.
Background technique
For prefabricated concrete structure compared with traditional construction mode, the products such as inside and outside wall board carry out industrialization in factory
Production, construction site use mechanical erection, can greatly improve speed of application, shorten the construction period.It is between prefabricated components or pre-
Node connection between component and site concrete processed is very crucial, and sleeve grouting connection is the node connection type of current mainstream,
Component be installed in place after by pour into sleeve grouting material realize component between connection.But the minimum temperature of constructing of ordinary cartridge grouting material
Degree is 5 DEG C, and when even lower than 0 DEG C lower than 5 DEG C of ambient air temperature, grouting material setting time dramatically increases or even be difficult to condense, nothing
Method construction, it is difficult to play the fast advantage of prefabricated concrete structure speed of application, it has also become restrict prefabricated concrete structure
The key factor of winter construction.
Patent CN 108017327A discloses a kind of low temperature sleeve grouting material and its manufacture craft, and freeze resisting component uses
Polyalcohols, dosage are the 0.05%~0.20% of cement mixing content, are generally liquid with polyalcohols due to freeze proof, and when construction needs
It individually to measure, and measuring accuracy requirement is high, bring inconvenience for construction, and lowest construction temperature is only -5 DEG C；Patent
108314393 A of CN discloses a kind of low temperature environment reinforcing bar connection grouting material and its preparation method and application, is suitable for -10
The reinforcing bar of DEG C environment above is in the milk connection construction, but supports without grouting material performance data at -10 DEG C；108147776 A of patent CN
A kind of low temperature reinforcing bar connection high performance grouting material and preparation method thereof is disclosed, lowest construction temperature is only -5 DEG C；More than and
Three patents do not consider the matching of grouting material and reinforced bar sleeve, do not provide sleeve grouting jointing performance data.
It would therefore be highly desirable to the reinforcing bar sleeve for connection grouting material used under developing a kind of winter environment.
Summary of the invention
The purpose of the present invention is for current reinforcing bar sleeve for connection grouting material in winter cryogenic conditions lower setting time it is long,
Early strength is low, construction speed is even difficult to the shortcomings that carrying out construction operation slowly, proposes a kind of winter construction reinforcing bar connection set
Cylinder grouting material, it is minimum meet -10 DEG C of winter under the conditions of reinforcing bar sleeve for connection be in the milk use.
The present invention provides the new application method of a kind of calcium nitrate and sodium sulfocyanate, is for reducing reinforcing bar sleeve for connection
The freezing point of grouting material.It, can be effective using 0.1~1.0% calcium nitrate and/or sodium sulfocyanate of the gross mass for accounting for the grouting material
Reduce the freezing point of reinforcing bar sleeve for connection grouting material.
In order to further enhance the freezing point of reduction grouting material, and the early strength of grouting material is promoted, is connected in the reinforcing bar
With exothermic material, the 3%-6% of the gross mass of Zhan Suoshu grouting material is added in sleeve grouting material, the exothermic material is aquation
Exothermic material is quick lime and/or calcium carbide.
In order to further make the reinforcing bar sleeve for connection grouting material be easy to use at low temperature, aquation excitation also added
Compound can further promote the early strength of the reinforcing bar sleeve for connection grouting material, and the aquation excitation compound is sulphur
One of sour lithium, lithium carbonate, potassium dihydrogen phosphate or the mixing of a variety of arbitrary proportions；Dosage accounts for the gross mass of the grouting material
0.5~2/ ‰.
Further, winter construction reinforcing bar sleeve for connection grouting material of the present invention, also added following components,
By following mass percentage compositions:
The cement is the sulphate aluminium cement or magnesium phosphate cement of 42.5 or more strength grade；
The fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 1~3:1；
The fineness of the flyash is 45 μm of square hole screen screen over-size < 10%.
The specific surface area of the miberal powder is 800~1000m2/kg；
The partial size of the agstone is 1500~1800 mesh；
The composite expanding agent is the plastic expansion agent of 1~1.5:100 of mass ratio and the mixing of hardening phase swelling agent；
The early-strength super plasticizer is Early-strength polycarboxylate superplasticizer, 1d compressive strength rate >=20%；
The defoaming agent is organic silicon defoamer；
The application method of the winter construction reinforcing bar sleeve for connection grouting material, which is characterized in that by the winter of preparation
Season, construction reinforced bar sleeve for connection grouting material dry powder can construct after adding water and stirring 3~5min by ratio of water to material 0.11~0.12.
The application range of the winter construction reinforcing bar sleeve for connection grouting material, in addition to being used for assembled Fang Jianjie
Structure, it may also be used for precast pier assembly, prefabricated assembled piping lane and other some structure nodes connections.
The utility model has the advantages that winter construction reinforcing bar sleeve for connection grouting material of the present invention, passes through freezing point controlled material
The freezing point of slurry hole solution is reduced, guarantees that hydration reaction can occur under subzero temperature for cementitious material；It is improved and is stirred by exothermic material
The out-of-machine temperature of slurry afterwards, compound aquation excitation compound, early-strength super plasticizer are to improve cementitious material early hydration rate
And degree of hydration, greatly improve the early strength of grouting material；Slurry compactness is improved by optimization gelling material particles gradation,
High-intensity fine aggregate is introduced simultaneously, has been obviously improved the later strength of grouting material；Pass through the micro- swollen of plastic stage and hardening phase
It is swollen, the cohesive force of grouting material and reinforcing bar and sleeve is improved, to improve the tensile strength of sleeve grouting jointing；This hair
Bright sleeve grouting material, early strength development is fast under cryogenic conditions in winter, and later strength is high, good with reinforced bar sleeve matching,
The use that reinforcing bar sleeve for connection is in the milk under the conditions of -10 DEG C of winter can be met.
Specific embodiment
The present invention will be further explained combined with specific embodiments below.
Early-strength super plasticizer used is Jiangsu Subotexin Material Co., Ltd's production in following embodiments- 500P powdery polycarboxylic acid high-performance water reducer, defoaming agent are the bright icepro chemistry P803 powder defoaming agent of Germany, and ratio of water to material is
0.11。
Embodiment 1
A kind of winter construction reinforcing bar sleeve for connection grouting material, is made of by mass percentage following substance:
Wherein cement is 42.5 sulphate aluminium cement of strength grade, and 45 μm of square hole screen screen over-sizes of flyash are 8.3%, miberal powder
Specific surface area be 900m2/ kg, the partial size of agstone are 1600 mesh, and composite expanding agent is the plastic expansion of mass ratio 1:100
The mixing of agent and hardening phase swelling agent, freezing point controlled material are calcium nitrate, and exothermic material is quick lime, and aquation excites compound
For lithium sulfate, fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 1:1.
Embodiment 2
A kind of winter construction reinforcing bar sleeve for connection grouting material, is made of by mass percentage following substance:
Wherein cement is 42.5 sulphate aluminium cement of strength grade, and 45 μm of square hole screen screen over-sizes of flyash are 8.3%, miberal powder
Specific surface area be 850m2/ kg, the partial size of agstone are 1800 mesh, and composite expanding agent is the plastic expansion of mass ratio 1:100
The mixing of agent and hardening phase swelling agent, freezing point controlled material are sodium sulfocyanate, and exothermic material is calcium carbide, and aquation excites chemical combination
Object is lithium carbonate, and fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 1.5:1.
Embodiment 3
A kind of winter construction reinforcing bar sleeve for connection grouting material, is made of by mass percentage following substance:
Wherein cement is 42.5 sulphate aluminium cement of strength grade, and 45 μm of square hole screen screen over-sizes of flyash are 8.3%, miberal powder
Specific surface area be 950m2/ kg, the partial size of agstone are 1600 mesh, and composite expanding agent is that the plasticity of mass ratio 1.5:100 is swollen
Swollen dose is sodium sulfocyanate with the mixing of hardening phase swelling agent, freezing point controlled material, and exothermic material is quick lime, aquation excitationization
Conjunction object is lithium carbonate, and fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 2:1.
Embodiment 4
A kind of winter construction reinforcing bar sleeve for connection grouting material, is made of by mass percentage following substance:
Wherein cement is 52.5 sulphate aluminium cement of strength grade, and 45 μm of square hole screen screen over-sizes of flyash are 8.3%, miberal powder
Specific surface area be 900m2/ kg, the partial size of agstone are 1600 mesh, and composite expanding agent is the plastic expansion of mass ratio 1:100
The mixing of agent and hardening phase swelling agent, freezing point controlled material are calcium nitrate, and exothermic material is quick lime, and aquation excites compound
For lithium sulfate, fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 2:1.
Embodiment 5
A kind of winter construction reinforcing bar sleeve for connection grouting material, is made of by mass percentage following substance:
Wherein cement is 52.5 sulphate aluminium cement of strength grade, and 45 μm of square hole screen screen over-sizes of flyash are 8.3%, miberal powder
Specific surface area be 850m2/ kg, the partial size of agstone are 1800 mesh, and composite expanding agent is the plastic expansion of mass ratio 1:100
The mixing of agent and hardening phase swelling agent, freezing point controlled material are sodium sulfocyanate, and exothermic material is calcium carbide, and aquation excites chemical combination
Object is lithium carbonate, and fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 2.5:1.
Embodiment 6
A kind of winter construction reinforcing bar sleeve for connection grouting material, is made of by mass percentage following substance:
Wherein cement is 52.5 sulphate aluminium cement of strength grade, and 45 μm of square hole screen screen over-sizes of flyash are 8.3%, miberal powder
Specific surface area be 950m2/ kg, the partial size of agstone are 1600 mesh, and composite expanding agent is that the plasticity of mass ratio 1.5:100 is swollen
Swollen dose is sodium sulfocyanate with the mixing of hardening phase swelling agent, freezing point controlled material, and exothermic material is quick lime, aquation excitationization
Conjunction object is lithium carbonate, and fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 3:1.
Embodiment 7
A kind of winter construction reinforcing bar sleeve for connection grouting material, is made of by mass percentage following substance:
Wherein cement is 52.5 magnesium phosphate cement of strength grade, and 45 μm of square hole screen screen over-sizes of flyash are 8.3%, miberal powder
Specific surface area is 850m2/ kg, the partial size of agstone are 1800 mesh, and composite expanding agent is the plastic expansion agent of mass ratio 1:100
With the mixing of hardening phase swelling agent, freezing point controlled material is sodium sulfocyanate, and exothermic material is quick lime, and aquation excites compound
For potassium dihydrogen phosphate, fine aggregate is the mixing of the 0~1mm yellow ground and 0~1mm Brown Alundum of 2:1.
Comparative example
Fluidity, compression strength and the reinforced bar sleeve grouting jointing of embodiment 1-7 and comparative example under the conditions of -10 DEG C
Tensile strength numerical value such as table 1, wherein reinforced bar sleeve uses " Sha Gang " 25mm using " in build " the full grout sleeve of board, reinforcing bar
HRB400 screw-thread steel, fluidity and intensity test method reference JG/T 408-2013 " reinforcing bar sleeve for connection grouting material ",
Referring to JGJ 355-2015, " skill is applied in reinforced bar sleeve grouting connection to the tensile strength test method of reinforced bar sleeve grouting jointing
Art regulation ".
1 the performance test results of table (- 10 DEG C)
Table 1 is fluidity, compression strength and reinforcing bar of the sleeve grouting material at -10 DEG C described in embodiment 1-9 and 7 comparative examples
The tensile strength of sleeve grouting jointing.As can be seen that the initial flow degree of comparative example and Examples 1 to 7 300mm with
On, 30min retains in 260mm or more, being all satisfied the regulation of JG/T 408-2013 " reinforcing bar sleeve for connection grouting material "；
The intensity at -10 DEG C of sleeve grouting material described in comparative example is effective viscous less than being difficult to be formed between 10MPa, with reinforced bar sleeve
Knot, tensile strength are far below Steel Bar Tensile Strength, and failure mode is that reinforcing bar is pulled out；Compared with sleeve grouting material described in comparative example,
The compression strength of embodiment 1-7 significantly increases, wherein the compression strength highest of embodiment 6, and 1d compression strength is 52.4MPa,
28d compression strength is 110.4MPa；When Bar Anchorage depth is 8d, using the reinforcing bar set of the grouting material preparation of embodiment 1-7
Cylinder grouting jointing tensile strength is all larger than the tensile strength of reinforcing bar, and failure mode is to break in reinforcing bar, when Bar Anchorage depth
When for 6d, steel is all larger than using the reinforced bar sleeve grouting jointing tensile strength of the grouting material of embodiment 3 and embodiment 6 preparation
The tensile strength of muscle, the reinforced bar sleeve grouting in reinforcing bar, prepared using the grouting material of remaining 5 embodiment of breaking of when destruction are connect
Head tensile strength is respectively less than the tensile strength of reinforcing bar, and reinforcing bar is pulled out when destruction.
Claims (6)
1. the application of a kind of calcium nitrate and/or sodium sulfocyanate, which is characterized in that for reducing reinforcing bar sleeve for connection grouting material
Freezing point；Dosage accounts for the 0.1~1.0% of the gross mass of the reinforcing bar sleeve for connection grouting material.
2. a kind of reinforcing bar sleeve for connection grouting material, which is characterized in that also added exothermic material, Zhan Suoshu reinforcing bar connection set
The 3%-6% of the gross mass of cylinder grouting material, the exothermic material are hydration heat material, are quick lime and/or calcium carbide.
3. reinforcing bar sleeve for connection grouting material according to claim 2, which is characterized in that also added aquation excitation chemical combination
Object, aquation excitation compound are one of lithium sulfate, lithium carbonate, potassium dihydrogen phosphate or a variety of are mixed with arbitrary proportion；
Dosage accounts for 0.5~the 2/ ‰ of the gross mass of the reinforcing bar sleeve for connection grouting material.
4. reinforcing bar sleeve for connection grouting material according to claim 3, also added following components, by following quality hundred
Divide than composition
The cement is the sulphate aluminium cement or magnesium phosphate cement of 42.5 or more strength grade；
The mixing of 0~1mm yellow ground and 0~1mm Brown Alundum that the fine aggregate is 1~3: 1；
The fineness of the flyash is 45 μm of square hole screen screen over-size < 10%；
The specific surface area of the miberal powder is 800~1000m2/kg；
The partial size of the agstone is 1500~1800 mesh；
The composite expanding agent is the plastic expansion agent of mass ratio 1~15: 100 and the mixing of hardening phase swelling agent；
The early-strength super plasticizer is Early-strength polycarboxylate superplasticizer, 1d compressive strength rate >=20%；
The defoaming agent is organic silicon defoamer.
5. the application method of reinforcing bar sleeve for connection grouting material described in any one of claim 2-4, in addition to for filling
Structure is built with formula room, it may also be used for precast pier assembly, prefabricated assembled piping lane and other some structure nodes connections.
6. application according to claim 5, which is characterized in that by the winter construction reinforcing bar sleeve for connection injection material of preparation
Material dry powder can construct after adding water and stirring 3~5min by ratio of water to material 0.11~0.12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560183.7A CN109553367B (en) | 2018-12-19 | 2018-12-19 | Sleeve grouting material for connecting reinforcing steel bars in winter construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811560183.7A CN109553367B (en) | 2018-12-19 | 2018-12-19 | Sleeve grouting material for connecting reinforcing steel bars in winter construction |
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| CN109553367A true CN109553367A (en) | 2019-04-02 |
| CN109553367B CN109553367B (en) | 2022-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423072A (en) * | 2019-04-30 | 2019-11-08 | 河北达奥达建材科技股份有限公司 | It is a kind of can be in the sleeve grouting material of -10 DEG C of construction in minus-temperature environment |
| CN112110672A (en) * | 2020-09-15 | 2020-12-22 | 武汉比邻科技发展有限公司 | Super early strength admixture, preparation method thereof and low-temperature sleeve grouting material for steel bar connection |
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| JPH0672752A (en) * | 1992-08-24 | 1994-03-15 | Denki Kagaku Kogyo Kk | Cement composition |
| CN102875052A (en) * | 2012-10-23 | 2013-01-16 | 天津市建筑科学研究院有限公司 | Compound admixture for heat curing-free concrete in winter construction |
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| CN108147776A (en) * | 2016-12-05 | 2018-06-12 | 北京市建筑工程研究院有限责任公司 | A kind of low temperature bar connecting high performance grouting material and preparation method thereof |
| CN108314393A (en) * | 2018-03-20 | 2018-07-24 | 中冶建筑研究总院有限公司 | A kind of low temperature environment bar connecting grouting material and its preparation method and application |
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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672752A (en) * | 1992-08-24 | 1994-03-15 | Denki Kagaku Kogyo Kk | Cement composition |
| CN102875052A (en) * | 2012-10-23 | 2013-01-16 | 天津市建筑科学研究院有限公司 | Compound admixture for heat curing-free concrete in winter construction |
| CN104961418A (en) * | 2015-06-26 | 2015-10-07 | 石家庄市易达恒联路桥材料有限公司 | Post-tensioning prestress hole channel slurry pressing material suitable for low temperature environment and preparing method thereof |
| CN105199692A (en) * | 2015-09-14 | 2015-12-30 | 河北铁园科技发展有限公司 | Low temperature rapid hardening grouting material for offshore oil well and preparation method thereof |
| CN108147776A (en) * | 2016-12-05 | 2018-06-12 | 北京市建筑工程研究院有限责任公司 | A kind of low temperature bar connecting high performance grouting material and preparation method thereof |
| CN108314393A (en) * | 2018-03-20 | 2018-07-24 | 中冶建筑研究总院有限公司 | A kind of low temperature environment bar connecting grouting material and its preparation method and application |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423072A (en) * | 2019-04-30 | 2019-11-08 | 河北达奥达建材科技股份有限公司 | It is a kind of can be in the sleeve grouting material of -10 DEG C of construction in minus-temperature environment |
| CN112110672A (en) * | 2020-09-15 | 2020-12-22 | 武汉比邻科技发展有限公司 | Super early strength admixture, preparation method thereof and low-temperature sleeve grouting material for steel bar connection |
| CN112110672B (en) * | 2020-09-15 | 2022-05-10 | 武汉比邻科技发展有限公司 | Ultra-early-strength admixture, preparation method thereof and low-temperature sleeve grouting material for steel bar connection |
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| CN109553367B (en) | 2022-05-31 |
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