CN108147776B - High-performance grouting material for low-temperature steel bar connection and preparation method thereof - Google Patents
High-performance grouting material for low-temperature steel bar connection and preparation method thereof Download PDFInfo
- Publication number
- CN108147776B CN108147776B CN201611102329.4A CN201611102329A CN108147776B CN 108147776 B CN108147776 B CN 108147776B CN 201611102329 A CN201611102329 A CN 201611102329A CN 108147776 B CN108147776 B CN 108147776B
- Authority
- CN
- China
- Prior art keywords
- low
- steel bar
- grouting material
- performance
- bar connection
- 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.)
- Active
Links
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
- C04B28/36—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 sulfur, sulfides or selenium
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
-
- 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
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Abstract
The invention provides a high-performance grouting material for low-temperature steel bar connection and a preparation method thereof. The invention is prepared by adding water into dry powder of a mixture of a cementing material, a mineral admixture, a graded aggregate, a water reducing agent, a plastic expanding agent and an additive and stirring. The technical scheme provided by the invention can meet the construction requirement of the sleeve grouting material for connecting the reinforcing steel bars in a low-temperature environment (at-5 ℃ to 10 ℃) on the basis of maintaining the original performance.
Description
Technical Field
The invention relates to the field of building materials, in particular to a high-performance grouting material for low-temperature steel bar connection and a preparation method thereof.
Background
The housing industrialization is a modern advanced industrialization mode for building houses by adopting an industrialized prefabricated concrete structure. The method has the advantages of promoting the housing industrialization, being beneficial to improving the labor productivity of housing construction, promoting the refinement of housing design and construction, improving the overall quality and energy-saving emission-reducing level of the housing, promoting the sustainable development of housing construction, promoting the new economic growth mode conversion and industry upgrade, and being one of the necessary routes for the development of house and land industry and building industry. In recent years, the related technology of the fabricated building is rapidly developed in China. The prefabricated building is rapidly developed, but there are many factors that restrict the development, wherein the connection between the prefabricated components is one of the key factors. The traditional steel bar lapping obviously cannot meet the requirement of assembling the prefabricated components, because the common lapping length of the steel bars is 35d, the reserved gap between the components is too large, the cast-in-place part is greatly increased, and the industrial production of the prefabricated concrete components is meaningless. The welding process also requires large manual operation gaps between the components, the welding time is long, and the components are difficult to support. Considering all the advantages and disadvantages, the mechanical joint steel bar connection is one of the best solutions. At present, a mechanical joint mainly takes a straight thread joint, a cold extrusion joint and a taper thread joint as main parts in cast-in-place concrete, wherein the thread joint has the characteristics of high connection speed and high strength, but the mechanical joint generally needs a certain operation space and has extremely high requirements on the relative position of connected steel bars, so that the operability is greatly reduced, the construction of the connection modes is also complex, the steel bar connection must be completed before the concrete is poured, and the mechanical joint is not suitable for the assembly type construction of a precast concrete structure. Aiming at the special situation, a new steel bar connecting system, namely a steel bar sleeve grouting joint is generated, the anti-seismic performance is reliable, the construction is simple and convenient, the construction period can be shortened, the joint is suitable for connecting ribbed steel bars with different diameters, and more importantly, the seamless butt joint between components is really realized, and the difficult problem of connecting precast concrete assembled components is solved. At present, the steel bar sleeve grouting technology has become the main connecting technology of components such as prefabricated shear walls, frame columns, beams and the like.
The assembled building component steel bar sleeve grouting connection is a concealed project, the grouting quality directly affects the structure safety, the grouting period directly affects the structure construction period, and further the total construction cost of the project is affected. Due to the lack of grouting materials and corresponding construction technologies for construction in low-temperature seasons, the prefabricated buildings in a wide area in the north of China need to be stopped in winter, and the advantage of rapid construction of the prefabricated buildings in comparison with the traditional construction mode is seriously weakened.
According to the specification of JGJ355-2015 in the technical specification of grouting and application of steel bar sleeve grouting, the use temperature of the grouting material during sleeve grouting construction is not lower than 5 ℃. In the construction of the Beijing city, which is a region with longer low-temperature seasons, the effective installation period of the assembled component is greatly shortened, so that the research on the super-early-strength grouting material suitable for the construction in the low-temperature seasons has great practical significance. At present, only the research on grouting material at about 5 ℃ is carried out by the Japan electrochemical corporation abroad, and the application of sleeve grouting material under low and negative temperature conditions is researched by Zhuqing and the like of the national Simon technologies development Limited company, but the sleeve grouting material still has great restriction on the requirement that the temperature of the sleeve part is more than 0 ℃.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for preparing a high-performance grouting material for connecting steel bars at a low temperature (between-5 ℃ and 10 ℃), which meets the construction requirements of a sleeve grouting material for connecting the steel bars in a low-temperature environment.
In order to solve the problems, the invention adopts the technical scheme that: a high-performance grouting material for low-temperature steel bar connection is prepared by adding water into dry powder of a mixture of a cementing material, a mineral admixture, a graded aggregate, a water reducing agent, a plastic expanding agent and an additive and stirring.
Wherein the cementing material is one or two or three or four of Portland cement, sulphoaluminate cement, high-alumina cement and high-belite sulphoaluminate cement, and the strength grade of the cementing material is 32.5 to 82.5.
The graded aggregate is one or two or three or four or five of quartz sand, carborundum, machine-made sand, corundum, silicon carbide and the like.
The water reducing agent is a powdery polycarboxylic acid high-performance water reducing agent.
The mineral admixture is one or two or three or four or five of silica fume, metakaolin, micro-beads, mineral powder and ultrafine fly ash
The plastic expanding agent is a nitrogen-containing organic compound.
The preparation method comprises the step of adding water into the high-performance grouting material dry powder for low-temperature steel bar connection, and stirring the mixture according to the water-material ratio of 0.11-0.16.
Compared with the prior art, the invention has the following advantages:
1) the grouting material has good fluidity and strong self-compactness;
2) the grouting material has high early strength, micro-expansion volume, no shrinkage of later strength and good durability;
3) the grouting material can meet the requirements of the JG/T408-2013 standard of the technical specification for grouting and application of the steel sleeve under the construction environment of-5 ℃ to 10 ℃.
The grouting material meets the requirements of 'grouting connection application technical specification of steel sleeve' JGJ355-2015 and realizes all-weather construction of the steel sleeve connection joint.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1: a high-performance grouting material for low-temperature steel bar connection is prepared by adding water into high-performance grouting material dry powder for low-temperature steel bar connection and stirring. The high-performance grouting material dry powder for low-temperature steel bar connection comprises the following components in percentage by weight:
10 parts by weight of Portland cement
34.79 parts of high belite sulfate cement
50 parts by weight of quartz sand
5 parts by weight of silica fume
0.01 part by weight of plastic expanding agent
0.2 part by weight of water reducing agent
And uniformly mixing the materials to obtain the high-performance grouting material dry powder for the low-temperature steel bar connection, mixing the dry powder with water according to the water-material ratio of 0.14, and mixing and stirring the mixture for 3 to 5 minutes by using a stirrer to obtain the high-performance grouting material for the low-temperature steel bar connection.
Example 2:
a high-performance grouting material for low-temperature steel bar connection is prepared by adding water into high-performance grouting material dry powder for low-temperature steel bar connection and stirring. The high-performance grouting material dry powder for low-temperature steel bar connection comprises the following components in percentage by weight:
10 parts by weight of Portland cement
20 parts by weight of sulphoaluminate cement
14.68 parts by weight of high belite sulfate cement
60 parts by weight of quartz sand
5 parts by weight of microbeads
0.02 part by weight of plastic expanding agent
0.3 part by weight of water reducing agent
And uniformly mixing the materials to obtain the high-performance grouting material dry powder for the low-temperature steel bar connection, mixing the dry powder with water according to the water-material ratio of 0.13, and mixing and stirring the mixture for 3 to 5 minutes by using a stirrer to obtain the high-performance grouting material for the low-temperature steel bar connection.
The prepared high-performance grouting material for low-temperature steel bar connection is subjected to performance test, and specific proportion and test data are shown in the following table:
the above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a high performance sleeve grout material for low temperature steel bar connection which characterized in that: the high-performance sleeve grouting material for the low-temperature steel bar connection is formed by adding water into sleeve grouting material dry powder for the steel bar connection and stirring, all-weather construction of a steel bar sleeve connection joint can be realized, the high-performance sleeve grouting material dry powder for the steel bar connection is a mixture of a cementing material, a mineral admixture, a graded aggregate, a water reducing agent, a plastic expanding agent and an additive, wherein the content of each component in the mixture is calculated by weight parts: and (3) cementing materials: 30-70 parts of a solvent; mineral admixture: 0-10 parts; grading aggregate: 30-70 parts of a solvent; 0.01-1% of water reducing agent; plastic swelling agent: 0.01-1 part; additive: 1-5 parts;
the water reducing agent is a powdery polycarboxylic acid high-performance water reducing agent, and the plastic expanding agent is a nitrogen-containing organic compound.
2. The high-performance sleeve grouting material for low-temperature steel bar connection according to claim 1, wherein the cementing material is one or two or three of portland cement, sulphoaluminate cement, high-alumina cement and high belite sulphoaluminate cement, and the strength grade of the cementing material is 32.5 to 82.5.
3. The high-performance sleeve grouting material for connecting the low-temperature steel bars according to claim 1, wherein the graded aggregate is one or two or three or four or five of quartz sand, carborundum, machine-made sand, corundum and silicon carbide.
4. The high-performance sleeve grouting material for connecting the low-temperature steel bars as claimed in claim 1, wherein the mineral admixture is one or two or three or four or five of silica fume, metakaolin, micro-beads, mineral powder and ultrafine fly ash.
5. The high-performance sleeve grouting material for connecting the low-temperature steel bars as claimed in claim 1, wherein the additive is cellulose ether, starch ether, rubber powder or polyacrylamide.
6. The preparation method of the high-performance sleeve grouting material for low-temperature steel bar connection according to claim 1, wherein the high-performance sleeve grouting material for low-temperature steel bar connection is prepared by adding water into the prepared high-performance grouting material dry powder for low-temperature steel bar connection and stirring, wherein the water-material ratio is 0.11-0.16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102329.4A CN108147776B (en) | 2016-12-05 | 2016-12-05 | High-performance grouting material for low-temperature steel bar connection and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102329.4A CN108147776B (en) | 2016-12-05 | 2016-12-05 | High-performance grouting material for low-temperature steel bar connection and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108147776A CN108147776A (en) | 2018-06-12 |
| CN108147776B true CN108147776B (en) | 2021-04-20 |
Family
ID=62470886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611102329.4A Active CN108147776B (en) | 2016-12-05 | 2016-12-05 | High-performance grouting material for low-temperature steel bar connection and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108147776B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020435B (en) * | 2018-08-21 | 2021-04-30 | 福建兴纳科技有限公司 | High-low temperature resistant sleeve grouting material and preparation method thereof |
| CN108996975B (en) * | 2018-09-17 | 2020-11-20 | 武汉源锦建材科技有限公司 | Sleeve grouting material for negative temperature type steel bar connection and preparation method thereof |
| CN109553367B (en) * | 2018-12-19 | 2022-05-31 | 江苏苏博特新材料股份有限公司 | Sleeve grouting material for connecting reinforcing steel bars in winter construction |
| CN109987906B (en) * | 2019-05-05 | 2020-12-22 | 天津水泥工业设计研究院有限公司 | Cement-based high-early-strength non-shrinkage grouting material |
| CN110950616B (en) * | 2019-12-17 | 2022-03-11 | 北京市市政工程研究院 | Grouting material for low-temperature steel bar sleeve connection and preparation method and application thereof |
| CN112707683B (en) * | 2019-12-24 | 2022-05-10 | 科之杰新材料集团福建有限公司 | Sleeve grouting material for prefabricated part and preparation method thereof |
| CN114702273B (en) * | 2019-12-24 | 2023-04-18 | 科之杰新材料集团福建有限公司 | Polycarboxylate superplasticizer for reinforcing steel bar sleeve grouting material for prefabricated part and grouting material thereof |
| CN111196698A (en) * | 2020-02-25 | 2020-05-26 | 华川建设集团有限公司 | Sleeve grouting material for connecting reinforcing steel bars and preparation method thereof |
| CN111439981B (en) * | 2020-04-03 | 2022-02-15 | 中建材中岩科技有限公司 | Low-temperature sleeve grouting material for connecting steel bars and application method thereof |
| CN111732387B (en) * | 2020-07-06 | 2022-02-18 | 台州四强新型建材有限公司 | Preparation method of recycled concrete doped with waste concrete blocks |
| 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 |
| CN113185242B (en) * | 2021-04-13 | 2023-03-10 | 武汉源锦建材科技有限公司 | Ultrahigh-strength grouting material for connecting assembled bridge reinforcement sleeve and preparation method thereof |
| CN113354354A (en) * | 2021-06-02 | 2021-09-07 | 中国电建集团西北勘测设计研究院有限公司 | Low-shrinkage cement-based grouting material and preparation method and application thereof |
| CN115872675A (en) * | 2022-11-10 | 2023-03-31 | 上海宝冶工程技术有限公司 | Sleeve grouting repair material for steel bar connection and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356286A (en) * | 2000-12-06 | 2002-07-03 | 高京林 | Expandable grout for construction in winter and its preparing process |
| CN101508546B (en) * | 2009-04-09 | 2012-09-05 | 中国铁道科学研究院铁道建筑研究所 | Novel winter cement based grouting agent for railway concrete beam support |
| CN102976699B (en) * | 2012-12-24 | 2014-07-02 | 武汉理工大学 | Low-temperature early strong bridge support anchoring material and preparation method thereof |
| CN103396057B (en) * | 2013-07-26 | 2015-05-20 | 太原理工大学 | Prestressed pore pressure slurry and grouting method thereof |
| CN103922677B (en) * | 2014-03-19 | 2016-04-06 | 湖南联智桥隧技术有限公司 | A kind of suitable low temperature back-tension prestressed channel mudjacking material and application thereof |
| CN105622006B (en) * | 2015-12-14 | 2018-05-04 | 江苏苏博特新材料股份有限公司 | A kind of low-temperature high-early strength high-strength underwater grouting material |
-
2016
- 2016-12-05 CN CN201611102329.4A patent/CN108147776B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 低负温钢筋连接用套筒灌浆料的应用研究;朱清华等;《施工技术》;20160525;第45卷(第10期);第49-51页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108147776A (en) | 2018-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108147776B (en) | High-performance grouting material for low-temperature steel bar connection and preparation method thereof | |
| CN103524091B (en) | The non-evaporating preparation method supporting ultralight foamed concrete of flyash in great mixed amount | |
| CN106830856A (en) | A kind of ungauged regions reinforcing bar sleeve for connection grouting material and preparation method thereof | |
| CN104108918A (en) | High performance cement-base self-leveling mortar | |
| CN109678430A (en) | Piping lane box culvert high-strength impervious self-compacting concrete and preparation method thereof | |
| CN113060998B (en) | Sleeve grouting material for connecting reinforcing steel bars in winter construction and preparation method thereof | |
| CN103332892A (en) | Industrial waste residue dry-mixed mortar | |
| CN102731039A (en) | Ready-mixed mortar and preparation method thereof | |
| CN109956720A (en) | A kind of light silencing gravity flowing levelling mortar and preparation method thereof | |
| CN111517732B (en) | Sleeve grouting material composition for connecting iron tailing sand steel bars and preparation and application thereof | |
| CN105084833A (en) | High-strength thermal insulation full lightweight concrete and preparation method and application thereof | |
| CN107954669A (en) | A kind of grouting material and preparation method thereof | |
| CN108585925A (en) | A kind of self heat-preserving concrete building block | |
| CN102701678A (en) | Delayed coagulation ready-mixed mortar and preparation method thereof | |
| CN103342522A (en) | Cracking resisting concrete | |
| CN114538843A (en) | Low-energy-consumption ecological type ultrahigh-performance concrete and preparation method thereof | |
| CN108530006B (en) | Reinforcing steel bar sleeve grouting material for assembly type structure connection and preparation method thereof | |
| CN103145361B (en) | Seepage-proof and anti-crack agent for concrete | |
| CN103664091A (en) | Special anti-crack plaster mortar powder for lightweight block and production thereof | |
| CN104557124B (en) | Lightweight anti-crack concrete and preparation method thereof | |
| CN104975676A (en) | Lightweight high-strength composite partition batten, and production method thereof | |
| CN105776989A (en) | Novel wet-mixed mortar | |
| CN111908882A (en) | Reinforcing fiber anti-crack reinforcing steel bar sleeve grouting material and preparation method thereof | |
| CN107473676B (en) | High-strength self-toughening building cement and preparation method thereof | |
| CN112645675B (en) | Prefabricated concrete structure steel bar sleeve grouting material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |