CN109553367B - Sleeve grouting material for connecting reinforcing steel bars in winter construction - Google Patents
Sleeve grouting material for connecting reinforcing steel bars in winter construction Download PDFInfo
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- CN109553367B CN109553367B CN201811560183.7A CN201811560183A CN109553367B CN 109553367 B CN109553367 B CN 109553367B CN 201811560183 A CN201811560183 A CN 201811560183A CN 109553367 B CN109553367 B CN 109553367B
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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 or 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 or 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 or shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/10—Acids or salts thereof containing carbon in the anion, e.g. carbonates
-
- 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 or 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 invention relates to a sleeve grouting material for connecting reinforcing steel bars in winter construction, which reduces the freezing point of a sleeve grouting material for connecting the reinforcing steel bars by using calcium nitrate and/or sodium thiocyanate; the using amount of the sleeve grouting material for connecting the steel bars is 0.1-1.0% of the total mass of the sleeve grouting material for connecting the steel bars. The freezing point of the slurry pore solution is reduced, so that the cementing material can be subjected to hydration reaction at negative temperature; the sleeve grouting material for connecting the reinforcing steel bars in winter construction has the advantages of quick development of early strength, high later strength and good matching property with the reinforcing steel bar sleeve under the low-temperature condition in winter, and can meet the use of sleeve grouting for connecting the reinforcing steel bars at the lowest temperature of 10 ℃ below zero in winter.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to a sleeve grouting material for connecting reinforcing steel bars in winter construction.
Background
Compared with the traditional construction mode, the prefabricated concrete structure has the advantages that products such as the inner wall panel and the outer wall panel are industrially produced in a factory, and the construction site is mechanically installed, so that the construction speed can be greatly increased, and the construction period can be shortened. The joint connection between prefabricated components or between the prefabricated components and cast-in-place components is very critical, the sleeve grouting connection is the mainstream joint connection mode at present, and the components are connected through pouring sleeve grouting material after being installed in place. However, the lowest construction temperature of the common sleeve grouting material is 5 ℃, when the ambient temperature is lower than 5 ℃ or even lower than 0 ℃, the setting time of the grouting material is obviously increased, even the grouting material is difficult to set and cannot be constructed, the advantage of high construction speed of the prefabricated concrete structure is difficult to exert, and the grouting material becomes a key factor for restricting the winter construction of the prefabricated concrete structure.
Patent CN 108017327A discloses a low-temperature sleeve grouting material and a manufacturing process thereof, wherein the antifreezing component adopts polyols, the dosage of the antifreezing component is 0.05-0.20% of the cement mixing amount, because the antifreezing polyols are generally liquid, separate metering is needed during construction, the metering precision requirement is extremely high, a lot of inconvenience is brought to construction, and the lowest construction temperature is only-5 ℃; the patent CN 108314393A discloses a grouting material for connecting steel bars in a low-temperature environment, a preparation method and application thereof, which are suitable for the grouting connection construction of the steel bars in the environment with the temperature of more than-10 ℃, but have no grouting material performance data support at the temperature of-10 ℃; patent CN 108147776A discloses a high-performance grouting material for low-temperature steel bar connection and a preparation method thereof, wherein the lowest construction temperature is only-5 ℃; and the three patents do not consider the matching property of the grouting material and the steel bar sleeve, and do not provide performance data of the sleeve grouting connection joint.
Therefore, it is desired to develop a sleeve grouting material for reinforcing bar connection used in winter environments.
Disclosure of Invention
The invention aims to provide a sleeve grouting material for connecting steel bars in winter, aiming at the defects of long setting time, low early strength, slow construction progress and even difficulty in construction operation of the conventional sleeve grouting material for connecting the steel bars under the condition of low temperature in winter, and the sleeve grouting material can meet the use requirement of sleeve grouting for connecting the steel bars under the condition of-10 ℃ in winter at the lowest.
The invention provides a new application method of calcium nitrate and sodium thiocyanate, which is used for reducing the freezing point of sleeve grouting material for connecting reinforcing steel bars. Calcium nitrate and/or sodium thiocyanate accounting for 0.1-1.0% of the total mass of the grouting material are used, so that the freezing point of the sleeve grouting material for connecting the steel bars can be effectively reduced.
In order to further improve and reduce the freezing point of the grouting material and improve the early strength of the grouting material, a heat release material is added into the sleeve grouting material for connecting the reinforcing steel bars, the heat release material accounts for 3% -6% of the total mass of the grouting material, and the heat release material is a hydration heat release material and is quicklime and/or calcium carbide.
In order to further enable the sleeve grouting material for the steel bar connection to be easy to use at low temperature, a hydration excitation compound is added, so that the early strength of the sleeve grouting material for the steel bar connection can be further improved, wherein the hydration excitation compound is one or a mixture of more of lithium sulfate, lithium carbonate and potassium dihydrogen phosphate in any proportion; the dosage of the grouting material is 0.5-2/% o of the total mass of the grouting material.
Further, the sleeve grouting material for connecting the steel bars in winter construction is further added with the following components in percentage by mass:
the cement is sulphoaluminate cement or magnesium phosphate cement with the strength grade of 42.5 or above;
the fine aggregate is 1-3: 1 of mixture of 0-1 mm yellow sand and 0-1 mm brown corundum;
the fineness of the fly ash is that the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than 10 percent.
The specific surface area of the mineral powder is 800-1000 m2/kg；
The particle size of the limestone powder is 1500-1800 meshes;
the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1-1.5: 100;
the early-strength superplasticizer is an early-strength polycarboxylate superplasticizer, and the 1d compressive strength ratio is more than or equal to 20 percent;
the defoaming agent is an organic silicon defoaming agent;
the application method of the sleeve grouting material for connecting the steel bars in winter construction is characterized in that the prepared sleeve grouting material for connecting the steel bars in winter construction is added with water according to the water-material ratio of 0.11-0.12 and stirred for 3-5 min, and then construction can be carried out.
The application range of the sleeve grouting material for connecting the steel bars in winter construction can be used for splicing prefabricated piers, prefabricating prefabricated pipe galleries and connecting other structural nodes besides being used for the prefabricated building structure.
Has the advantages that: the sleeve grouting material for connecting the reinforcing steel bars in winter construction disclosed by the invention has the advantages that the freezing point of a slurry pore solution is reduced through the freezing point regulating material, and the cementing material can be guaranteed to be subjected to hydration reaction at negative temperature; the discharge temperature of the slurry after stirring is increased through the heat release material, and the hydration exciting compound and the early-strength superplasticizer are compounded to increase the early hydration rate and the hydration degree of the cementing material and greatly increase the early strength of the grouting material; the compactness of the slurry is improved by optimizing the grain composition of the cementing material, and meanwhile, the high-strength fine aggregate is introduced, so that the later strength of the grouting material is obviously improved; through micro-expansion in a plasticity stage and a hardening stage, the bonding force of the grouting material, the steel bar and the sleeve is improved, so that the tensile strength of the sleeve grouting connecting joint is improved; the sleeve grouting material disclosed by the invention has the advantages of fast development of early strength, high later strength and good matching property with a steel bar sleeve under the low-temperature condition in winter, and can meet the use requirement of sleeve grouting for steel bar connection under the condition of-10 ℃ in winter.
Detailed Description
The invention is further explained below with reference to specific examples.
The early strength superplasticizer used in the following examples was produced by Jiangsu Subo New materials Co., Ltd
The powder-500P polycarboxylic acid high-performance water reducing agent is a German Minglin chemical P803 powder defoaming agent, and the water-material ratio is 0.11.
Example 1
A sleeve grouting material for connecting reinforcing steel bars in winter construction is composed of the following substances in percentage by mass:
wherein the cement is sulphoaluminate cement with the strength grade of 42.5, the screen residue of a 45-micron square-hole sieve of fly ash is 8.3 percent, and the specific surface area of the mineral powder is 900m2The limestone powder is 1600 meshes in particle size, the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1:100, the freezing point regulating material is calcium nitrate, the heat release material is quicklime, the hydration excitation compound is lithium sulfate, and the fine aggregate is a mixture of 0-1 mm yellow sand and 0-1 mm brown corundum in a ratio of 1: 1.
Example 2
A sleeve grouting material for connecting reinforcing steel bars in winter construction is composed of the following substances in percentage by mass:
wherein the cement is sulphoaluminate cement with the strength grade of 42.5, the screen residue of a 45-micron square-hole sieve of the fly ash is 8.3 percent, and the specific surface area of the mineral powder is 850m2The limestone powder is 1800 meshes in particle size, the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1:100, the freezing point regulating material is sodium thiocyanate, the heat release material is calcium carbide, the hydration excitation compound is lithium carbonate, and the fine aggregate is a mixture of 0-1 mm yellow sand and 0-1 mm brown corundum in a ratio of 1.5: 1.
Example 3
A sleeve grouting material for connecting reinforcing steel bars in winter construction is composed of the following substances in percentage by mass:
wherein the cement is sulphoaluminate cement with the strength grade of 42.5, the screen residue of a square hole screen with the particle size of 45 mu m of fly ash is 8.3 percent, and the specific surface area of the mineral powder is 950m2The limestone powder is 1600 meshes, the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1.5:100, the freezing point regulating material is sodium thiocyanate, the heat release material is quicklime, the hydration excitation compound is lithium carbonate, and the fine aggregate is a mixture of 2:1 of 0-1 mm yellow sand and 0-1 mm brown corundum.
Example 4
A sleeve grouting material for connecting reinforcing steel bars in winter construction is composed of the following substances in percentage by mass:
wherein the cement is sulphoaluminate cement with the strength grade of 52.5, the screen residue of a 45-micron square-hole sieve of fly ash is 8.3 percent, and the specific surface area of the mineral powder is 900m2The limestone powder is 1600 meshes in particle size, the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1:100, the freezing point regulating material is calcium nitrate, the heat release material is quicklime, the hydration excitation compound is lithium sulfate, and the fine aggregate is a mixture of 0-1 mm yellow sand and 0-1 mm brown fused alumina in a ratio of 2: 1.
Example 5
A sleeve grouting material for connecting reinforcing steel bars in winter construction is composed of the following substances in percentage by mass:
wherein the cement is sulphoaluminate cement with the strength grade of 52.5, the screen residue of a 45-micron square-hole sieve of fly ash is 8.3 percent, and the specific surface area of the mineral powder is 850m2The limestone powder is 1800 meshes in particle size, the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1:100, the freezing point regulating material is sodium thiocyanate, the heat-releasing material is calcium carbide, the hydration excitation compound is lithium carbonate, and the fine aggregate is 0-1 mm yellow sand with a particle size of 2.5:1And mixing with 0-1 mm brown corundum.
Example 6
A sleeve grouting material for connecting reinforcing steel bars in winter construction is composed of the following substances in percentage by mass:
wherein the cement is sulphoaluminate cement with the strength grade of 52.5, the screen residue of a 45-micron square-hole sieve of fly ash is 8.3 percent, and the specific surface area of the mineral powder is 950m2The limestone powder is 1600 meshes, the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1.5:100, the freezing point regulating material is sodium thiocyanate, the heat release material is quicklime, the hydration excitation compound is lithium carbonate, and the fine aggregate is a mixture of 0-1 mm yellow sand and 0-1 mm brown corundum in a ratio of 3: 1.
Example 7
A sleeve grouting material for connecting reinforcing steel bars in winter construction is composed of the following substances in percentage by mass:
wherein the cement is magnesium phosphate cement with the strength grade of 52.5, the screen residue of a square hole screen with the particle size of 45 mu m of fly ash is 8.3 percent, and the specific surface area of the mineral powder is 850m2The limestone powder is 1800 meshes in particle size, the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1:100, the freezing point regulating material is sodium thiocyanate, the heat release material is quicklime, the hydration excitation compound is potassium dihydrogen phosphate, and the fine aggregate is a mixture of 2:1 of 0-1 mm yellow sand and 0-1 mm brown corundum.
Comparative example
The fluidity, the compressive strength and the tensile strength of the steel bar sleeve grouting connection joint of the embodiments 1 to 7 and the comparative example under the condition of-10 ℃ are shown in the table 1, wherein the steel bar sleeve adopts a 'middle construction' brand full grouting sleeve, the steel bar adopts 'sand steel' 25mm HRB400 deformed steel bar, the fluidity and the compressive strength are tested according to JG/T408 + 2013 sleeve grouting material for steel bar connection, and the tensile strength of the steel bar sleeve grouting connection joint is tested according to JGJ + 355 2015 technical specification for steel bar sleeve grouting connection.
TABLE 1 Performance test results (-10 ℃ C.)
Table 1 shows the fluidity and compressive strength at-10 ℃ of the sleeve grouting materials of examples 1-9 and 7 and the tensile strength of the steel bar sleeve grouting joint of the comparative example. It can be seen that the initial fluidity of the comparative examples and the examples 1 to 7 is more than 300mm, and the initial fluidity of the comparative examples and the examples 1 to 7 is maintained to be more than 260mm after 30min, which both meet the regulations of JG/T408-; the sleeve grouting material has the strength of less than 10MPa at the temperature of-10 ℃, effective bonding is difficult to form between the sleeve grouting material and a steel bar sleeve, the tensile strength is far lower than that of the steel bar, and the failure modes are that the steel bar is pulled out; compared with the sleeve grouting material of the comparative example, the compressive strengths of the examples 1 to 7 are obviously increased, wherein the compressive strength of the example 6 is the highest, the compressive strength at 1d is 52.4MPa, and the compressive strength at 28d is 110.4 MPa; when the anchoring depth of the steel bar is 8d, the tensile strength of the steel bar sleeve grouting joints prepared by the grouting materials of the embodiments 1 to 7 is greater than that of the steel bar, the failure mode is that the steel bar is broken, when the anchoring depth of the steel bar is 6d, the tensile strength of the steel bar sleeve grouting joints prepared by the grouting materials of the embodiments 3 and 6 is greater than that of the steel bar, the steel bar is broken when the steel bar is broken, the tensile strength of the steel bar sleeve grouting joints prepared by the grouting materials of the other 5 embodiments is less than that of the steel bar, and the steel bar is pulled out when the steel bar is broken.
Claims (3)
1. The sleeve grouting material for connecting the steel bars is characterized in that calcium nitrate and/or sodium thiocyanate are/is added to reduce the freezing point of the sleeve grouting material for connecting the steel bars; the using amount of the sleeve grouting material for connecting the steel bars is 0.1-1.0% of the total mass of the sleeve grouting material for connecting the steel bars;
a heat release material is also added, the heat release material accounts for 3% -6% of the total mass of the sleeve grouting material for connecting the steel bars, and the heat release material is a hydration heat release material and is quicklime and/or calcium carbide;
a hydration excitation compound is also added, and the hydration excitation compound is one or more of lithium sulfate, lithium carbonate and potassium dihydrogen phosphate which are mixed in any proportion; the using amount of the grouting material is 0.5-2 per mill of the total mass of the sleeve grouting material for connecting the steel bars;
the sleeve grouting material for connecting the steel bars is also added with the following components in percentage by mass
35 to 45 percent of cement,
3-5% of fly ash,
2-3% of mineral powder,
3-5% of limestone powder,
3 to 5 percent of composite expanding agent,
0.25 to 0.35 percent of early strength superplasticizer,
1 to 2/ten thousand of defoaming agent,
the balance of fine aggregate;
the cement is sulphoaluminate cement or magnesium phosphate cement with the strength grade of 42.5 or above;
the fine aggregate is 1-3: 1 of mixture of 0-1 mm yellow sand and 0-1 mm brown corundum;
the fineness of the fly ash is that the sieve residue of a square-hole sieve with the fineness of 45 mu m is less than 10 percent;
the specific surface area of the mineral powder is 800-1000 m2/kg；
The particle size of the limestone powder is 1500-1800 meshes;
the composite expanding agent is a mixture of a plastic expanding agent and a hardening stage expanding agent in a mass ratio of 1-1.5: 100;
the early-strength superplasticizer is an early-strength polycarboxylate superplasticizer, and the 1d compressive strength ratio is more than or equal to 20 percent;
the defoaming agent is an organic silicon defoaming agent.
2. The application method of the sleeve grouting material for reinforcing bar connection according to claim 1, which is used for prefabricated pier assembly, prefabricated assembly pipe gallery and other structural node connections in addition to the prefabricated building structure.
3. The application of the sleeve grouting material for connecting the winter construction steel bars according to claim 2, wherein the prepared sleeve grouting material dry powder for connecting the winter construction steel bars is added with water according to the water-material ratio of 0.11-0.12 and stirred for 3-5 min.
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| 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 |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3451101B2 (en) * | 1992-08-24 | 2003-09-29 | 電気化学工業株式会社 | Grout material and ground injection method |
-
2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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