CN115745523A - Preparation method and application of floating type foundation prestressed grouting material - Google Patents
Preparation method and application of floating type foundation prestressed grouting material Download PDFInfo
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- CN115745523A CN115745523A CN202211551864.3A CN202211551864A CN115745523A CN 115745523 A CN115745523 A CN 115745523A CN 202211551864 A CN202211551864 A CN 202211551864A CN 115745523 A CN115745523 A CN 115745523A
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- grouting material
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- floating foundation
- cement
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- 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
Abstract
The invention discloses a preparation method and application of a floating foundation prestressed grouting material, wherein the grouting material comprises the following components in parts by weight: 390-420 parts of cement, 25-35 parts of concrete expanding agent, 0.05-0.2 part of hydroxypropyl methyl cellulose, 1.5-2 parts of water reducing agent, 0.4-0.6 part of defoaming agent, 0.2-0.4 part of plastic expanding agent and 560-580 parts of medium sand. The grouting material has a superfluid state, the initial fluidity is more than or equal to 300mm, and all gaps can be filled, so that the requirement of secondary grouting of equipment is met; the grouting material has a badge expansion compensation function, eliminates the phenomenon of water shaking, hardening and shrinking, and ensures that equipment is in close contact with a foundation after grouting, so that the high-precision installation requirement is ensured; the corrosion-resistant early-strength grouting material has corrosion resistance, erosion resistance, good sulfate resistance, good water erosion resistance and strong erosion resistance.
Description
Technical Field
The invention relates to the technical field of grouting materials, in particular to a preparation method and application of a floating type foundation prestress grouting material.
Background
The grouting material is prepared by taking a high-strength material as an aggregate, taking cement as a bonding agent and assisting materials with high flow state, micro-expansion, segregation prevention and the like. It is added with a certain amount of water in the construction site and can be used after being uniformly stirred. The grouting material has good self-fluidity, rapid hardening, early strength, high strength, no shrinkage and micro-expansion; no toxicity, no harm, no aging, no pollution to water quality and surrounding environment, good self-sealing property, rust prevention and the like. The construction method has the advantages of reliable quality, cost reduction, short construction period, convenient use and the like. The stress condition of the equipment base is fundamentally changed, and the equipment base uniformly bears the whole load of the equipment, so that the installation requirements of various machines and electrical equipment (heavy equipment high-precision grinding machines) are met, and the grouting material is an ideal grouting material in the age of installation without a cushion.
Several grouting materials are also available on the market today, but all suffer from a number of problems. For example, the early strength is not enough, which results in slow construction progress and influences the construction period. For example, the problems of difficult construction caused by poor working performance, non-compact grouting caused by large shrinkage, cracking and the like. The problems seriously affect the construction period and the construction quality of the project, and the fluidity and the strength of the project are still greatly improved so as to be suitable for more application scenes. In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a floating foundation prestressed grouting material.
The invention also provides a preparation method of the floating foundation prestressed grouting material.
The third purpose of the invention is to provide the application of the floating foundation prestressed grouting material.
In order to achieve the first object of the invention, the invention adopts the following technical scheme:
the floating foundation prestressed grouting material consists of cement 390-420 weight portions, concrete expanding agent 25-35 weight portions, hydroxypropyl methyl cellulose 0.05-0.2 weight portions, water reducing agent 1.5-2 weight portions, defoaming agent 0.4-0.6 weight portions, plastic expanding agent 0.2-0.4 weight portions, and medium sand 560-580 weight portions.
The floating foundation prestressed grouting material consists of cement 400 weight portions, concrete expanding agent 30 weight portions, hydroxypropyl methyl cellulose 0.1 weight portion, water reducing agent 1.5-2 weight portions, defoaming agent 0.5 weight portion, plastic expanding agent 0.3 weight portions, and medium sand 567 weight portions.
Further, the plastic swelling agent is a nitroso compound, an azo compound, a sulfonyl hydrazide compound, or a mixture thereof.
Further, the water reducing agent is a polycarboxylic acid water reducing agent.
Further, the concrete expanding agent is a UEA concrete expanding agent.
Further, the cement is general-purpose portland cement with 42.5 grade and above.
A preparation method of a floating foundation prestressed grouting material specifically comprises the following steps:
s1, cleaning and drying the medium sand, screening by using a standard sand sieve, and collecting 14-45-mesh clean medium sand;
s2, starting the forced mixer, idling for 2-3 minutes, and confirming that the equipment has no fault;
s3, weighing cement, a concrete expanding agent, hydroxypropyl methyl cellulose, a water reducing agent, a defoaming agent 0.4-0.6, a plastic expanding agent and the medium sand collected in the S1 according to the components;
s4, adding the raw materials of the components in the step S3 into a stirrer for mixing and stirring, and uniformly stirring to obtain grouting material dry powder for later use;
and S5, during construction, taking the grouting material dry powder in the step S4, adding 12-15% of water by mass, and uniformly stirring for use.
Further, the time for stirring and dry-mixing the raw materials in the step S4 is 22-30min.
An application of prestressed grouting material on floating foundation.
Compared with the prior art, the invention has the advantages that: the floating foundation prestressed grouting material has strong compressive capacity, the compressive strength of the floating foundation prestressed grouting material is more than or equal to 50MPa after the floating foundation prestressed grouting material is condensed for one day, and the compressive strength of the floating foundation prestressed grouting material is more than or equal to 60MPa after the floating foundation prestressed grouting material is condensed for 3 days; the grouting material has a superfluid state, the initial fluidity is more than or equal to 300mm, and all gaps can be filled, so that the requirement of secondary grouting of equipment is met; the grouting material has a badge expansion compensation function, eliminates the phenomenon of water shaking, hardening and shrinking, and ensures that equipment is in close contact with a foundation after grouting, so that the high-precision installation requirement is ensured; the corrosion-resistant early-strength grouting material has corrosion resistance, erosion resistance, good sulfate resistance, good water erosion resistance and strong erosion resistance; the inorganic grouting material is not aged and rustless to the reinforcing steel bars. The strength has no obvious change after 200 ten thousand times of fatigue tests and 50 times of freeze-thaw cycle tests.
Detailed Description
Example 1
The floating foundation prestressed grouting material consists of cement 390-420 weight portions, concrete expanding agent 25-35 weight portions, hydroxypropyl methyl cellulose 0.05-0.2 weight portions, water reducing agent 1.5-2 weight portions, defoaming agent 0.4-0.6 weight portions, plastic expanding agent 0.2-0.4 weight portions, and medium sand 560-580 weight portions.
In this embodiment, the plastic swelling agent is a nitroso compound, an azo compound, a sulfonyl hydrazide compound, or a mixture thereof.
In this embodiment, the water reducing agent is a polycarboxylic acid water reducing agent.
In this embodiment, the concrete expanding agent is a UEA concrete expanding agent.
In the present embodiment, the cement is general-purpose portland cement of 42.5 grade or more.
A preparation method of a floating foundation prestressed grouting material specifically comprises the following steps:
s1, cleaning and drying the medium sand, screening by using a standard sand sieve, and collecting clean medium sand of 14-45 meshes;
s2, starting the forced mixer, idling for 2-3 minutes, and confirming that the equipment has no fault;
s3, weighing cement, a concrete expanding agent, hydroxypropyl methyl cellulose, a water reducing agent, a defoaming agent 0.4-0.6, a plastic expanding agent and the medium sand collected in the S1 according to the components;
s4, adding the raw materials of the components in the step S3 into a stirrer for mixing and stirring, and uniformly stirring to obtain grouting material dry powder for later use;
and S5, during construction, taking the grouting material dry powder in the step S4, adding 12-15% of water by mass, and uniformly stirring for use.
In this embodiment, the time for stirring and dry-mixing the raw materials in step S4 is 22-30min.
Example 2
The floating foundation prestressed grouting material consists of cement 390-420 weight portions, concrete expanding agent 25-35 weight portions, hydroxypropyl methyl cellulose 0.05-0.2 weight portion, water reducing agent 1.5-2 weight portions, defoaming agent 0.4-0.6 weight portions, plastic expanding agent 0.2-0.4 weight portions, and medium sand 560-580 weight portions.
The floating foundation prestressed grouting material consists of cement 400 weight portions, concrete expanding agent 30 weight portions, hydroxypropyl methyl cellulose 0.1 weight portions, water reducing agent 1.5-2 weight portions, defoaming agent 0.5 weight portions, plastic expanding agent 0.3 weight portions, and medium sand 567 weight portions.
In this embodiment, the plastic swelling agent is a nitroso compound, an azo compound, a sulfonyl hydrazide compound, or a mixture thereof.
In this embodiment, the water reducing agent is a polycarboxylic acid water reducing agent.
In this embodiment, the concrete expanding agent is a UEA concrete expanding agent.
In the present embodiment, the cement is general-purpose portland cement of 42.5 grade or more.
A preparation method of a floating foundation prestressed grouting material specifically comprises the following steps:
s1, cleaning and drying the medium sand, screening by using a standard sand sieve, and collecting 14-45-mesh clean medium sand;
s2, starting the forced mixer, idling for 2-3 minutes, and confirming that the equipment has no fault;
s3, weighing cement, a concrete expanding agent, hydroxypropyl methyl cellulose, a water reducing agent, a defoaming agent 0.4-0.6, a plastic expanding agent and the medium sand collected in the S1 according to the components;
s4, adding the raw materials of the components in the step S3 into a stirrer for mixing and stirring, and uniformly stirring to obtain grouting material dry powder for later use;
and S5, during construction, taking the grouting material dry powder in the step S4, adding 12-15% of water by mass, and uniformly stirring for use.
In this embodiment, the time for stirring and dry-mixing the raw materials in step S4 is 22-30min.
An application of prestressed grouting material on floating foundation.
In the description herein, references to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," etc., indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the spirit of the invention, which shall be deemed to belong to the scope of the invention.
Claims (9)
1. The floating foundation prestressed grouting material is characterized by comprising, by weight, 390-420 parts of cement, 25-35 parts of concrete expanding agent, 0.05-0.2 part of hydroxypropyl methyl cellulose, 1.5-2 parts of water reducing agent, 0.4-0.6 part of defoaming agent, 0.2-0.4 part of plastic expanding agent and 560-580 parts of medium sand.
2. The floating foundation prestressed grouting material is characterized by comprising, by weight, 400 parts of cement, 30 parts of concrete expanding agent, 0.1 part of hydroxypropyl methyl cellulose, 1.5-2 parts of water reducing agent, 0.5 part of defoaming agent, 0.3 part of plastic expanding agent and 567 parts of medium sand.
3. A floating foundation pre-stressed grouting material according to claim 1 or 2, characterized in that the plastic swelling agent is a nitroso compound, an azo compound, a sulfonyl hydrazide compound or a mixture thereof.
4. A floating foundation prestressed grouting material as claimed in claim 3, characterized by that said water-reducing agent is a polycarboxylic acid water-reducing agent.
5. A floating foundation prestressed grouting material as claimed in claim 3, characterized in that said concrete expansion agent is UEA concrete expansion agent.
6. A floating foundation prestressed grouting material as claimed in claim 3, characterized in that said cement is general portland cement of 42.5 grade and above.
7. The preparation method of the floating foundation prestressed grouting material is characterized by comprising the following steps:
s1, cleaning and drying the medium sand, screening by using a standard sand sieve, and collecting 14-45-mesh clean medium sand;
s2, starting the forced mixer, idling for 2-3 minutes, and confirming that the equipment has no fault;
s3, weighing cement, a concrete expanding agent, hydroxypropyl methyl cellulose, a water reducing agent, a defoaming agent 0.4-0.6, a plastic expanding agent and the medium sand collected in the S1 according to the components;
s4, adding the raw materials of the components in the step S3 into a stirrer for mixing and stirring, and uniformly stirring to obtain grouting material dry powder for later use;
and S5, during construction, taking the grouting material dry powder in the step S4, adding 12-15% of water by mass, and uniformly stirring for use.
8. The floating foundation prestressed grouting material of claim 6, wherein the time for stirring and dry-mixing the raw materials in step S4 is 22-30min.
9. Use of a prestressed grouting material according to any one of claims 1-2 on a floating basis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211551864.3A CN115745523A (en) | 2022-12-05 | 2022-12-05 | Preparation method and application of floating type foundation prestressed grouting material |
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| CN202211551864.3A CN115745523A (en) | 2022-12-05 | 2022-12-05 | Preparation method and application of floating type foundation prestressed grouting material |
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| CN115745523A true CN115745523A (en) | 2023-03-07 |
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| CN202211551864.3A Pending CN115745523A (en) | 2022-12-05 | 2022-12-05 | Preparation method and application of floating type foundation prestressed grouting material |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548855A (en) * | 2021-07-29 | 2021-10-26 | 上海申通地铁集团有限公司 | Cement-based grouting material and preparation method thereof |
| CN115339581A (en) * | 2022-09-21 | 2022-11-15 | 广东金池装配建设有限公司 | Floating type reinforced concrete universal wind power foundation |
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2022
- 2022-12-05 CN CN202211551864.3A patent/CN115745523A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548855A (en) * | 2021-07-29 | 2021-10-26 | 上海申通地铁集团有限公司 | Cement-based grouting material and preparation method thereof |
| CN115339581A (en) * | 2022-09-21 | 2022-11-15 | 广东金池装配建设有限公司 | Floating type reinforced concrete universal wind power foundation |
Non-Patent Citations (1)
| Title |
|---|
| 化学工业出版社组织编: "化工产品手册 13 新领域精细化学品", vol. 1, 中国建材工业出版社, pages: 931 - 932 * |
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