CN114956721B - High-strength superfine deep hole grouting reinforcement material and preparation method thereof - Google Patents
High-strength superfine deep hole grouting reinforcement material and preparation method thereof Download PDFInfo
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- CN114956721B CN114956721B CN202210485653.8A CN202210485653A CN114956721B CN 114956721 B CN114956721 B CN 114956721B CN 202210485653 A CN202210485653 A CN 202210485653A CN 114956721 B CN114956721 B CN 114956721B
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- deep hole
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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
- C04B28/04—Portland cements
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
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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
- 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
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a high-strength superfine deep hole grouting reinforcement material and a preparation method thereof, which are characterized in that nano silicon dioxide is magnetized, a high-strength magnetic field is applied at the initial stage of grouting to prevent nano particles from aggregation and sedimentation, the viscosity of slurry is regulated to improve the injectability of the slurry, the nano silicon dioxide is easier to be injected into fine cracks, the viscosity of the gaps can be rapidly improved, the water extraction rate of the magnetized grouting material is lower, the calculus rate is higher, collapse caused by sinking of upper calculus is prevented, and the seepage passage of water is prolonged to further improve the impermeability of the slurry.
Description
Technical Field
The invention belongs to the technical field of grouting filling materials, and particularly relates to a high-strength superfine deep hole grouting reinforcement material and a preparation method thereof.
Background
As grouting reinforcement technology is increasingly applied to deep micro-holes, the demand for high-quality grouting materials is also increasing. Microcracks play a non-negligible role in structural stability and service life, and grouting material types in engineering are mainly classified into chemical grouting materials and cement grouting materials. The chemical grouting material has the characteristics of low viscosity, capability of being injected into micro cracks and adjustable solidification time from a few seconds to a few hours, but the chemical grouting material is expensive and has a certain toxicity mostly, so the chemical grouting material is limited in practical application. The cement grouting material has the advantages of low cost, wide sources, high strength, good durability, convenient use and the like, but the cement grouting material also has the defects of large particle size of common cement particles, poor stability or high viscosity of slurry and the like, so that the grouting material has the defects of inferior injectability as a chemical grouting material, influence on the bonding strength with a reinforcing body and the like.
In order to solve the problems of small diffusion radius, poor cementing property and high water separation rate of common cement grouting materials in rock cracks, chinese patent CN113548866A discloses a mud-philic grouting reinforcement material process, which comprises 15-25% of silicon dioxide, and compared with the traditional inorganic grouting materials, the water separation amount is greatly reduced.
Therefore, how to provide a high-strength ultra-fine deep hole grouting reinforcement material with better injectability is a technical problem which is always expected to be solved.
Disclosure of Invention
Aiming at the prior art, the invention provides a high-strength superfine deep hole grouting reinforcement material, which comprises 100-140 parts of silicate cement clinker, 60-100 parts of fly ash, 24-48 parts of superfine limestone, 0.5-10 parts of thickening resin, 5-25 parts of magnetic nano silicon dioxide and 15-30 parts of polycarboxylate water reducer.
Preferably, the magnetic nano silicon dioxide is a core-shell structure of silicon dioxide coated ferric oxide and/or nickel oxide.
The preparation method comprises the following steps:
step 1), mixing and stirring a certain amount of water and a surfactant for 1-2h;
step 2), dispersing a proper amount of magnetic metal precursor nickel nitrate and/or ferric nitrate in the solution in the step 1), mixing, stirring at room temperature for 3-6h, then adding concentrated ammonia water, and continuing stirring for 1-3h;
and 3) adding a proper amount of Tetraethoxysilane (TEOS), stirring for 1-2 days at room temperature, adding a certain amount of ethanol, continuously stirring for 1-2 hours, centrifuging, continuously washing with ethanol for 2 times, drying, and then heating to 300 ℃ by programming to calcine for 2-4 hours to obtain the core-shell structure of the silicon dioxide coated ferric oxide and/or nickel oxide.
Preferably, the thickening resin is an acrylic resin.
Preferably, the surfactant in step 1) is an anionic surfactant, more preferably, the anionic surfactant is sodium dodecylbenzenesulfonate or sodium fatty alcohol ether sulfate.
Preferably, the molar ratio of surfactant to water in step 1) is 1.0 (1000-2000).
Preferably, the molar ratio of the magnetic metal precursor to the surfactant in step 1) is (0.1 to 0.8): 1.0.
preferably, the molar ratio of TEOS to surfactant in step 3) is (5-10): 1.0.
the invention further provides a preparation method of the high-strength superfine deep hole grouting reinforcement material, which comprises the following steps of:
100-140 parts of silicate cement clinker, 60-100 parts of fly ash, 24-48 parts of superfine limestone and thickening resin
0.5 to 10 parts of magnetic nano silicon dioxide 5 to 25 parts of polycarboxylate water reducer 15 to 30 parts, and the like, and uniformly stirring.
Compared with the prior art, the ultra-fine deep hole grouting reinforcement material of the invention is prepared by carrying out magnetic treatment on nano silicon dioxide
The method comprises the steps of carrying out chemical treatment, applying a high-intensity magnetic field at the initial stage of grouting to prevent nano particles from aggregation and sedimentation, adjusting the viscosity of slurry to improve the injectability, and as nano silicon dioxide is easier to inject into fine cracks, the viscosity of gaps can be rapidly improved, the water extraction rate of the magnetized grouting material is lower, the calculus rate is higher, collapse caused by sinking of upper calculus is prevented, and the impermeability of the slurry is further improved due to the fact that a seepage channel of water is prolonged.
Drawings
FIG. 1 is a TEM image of magnetic silica prepared in example 1.
Detailed Description
The implementation and the advantages of the technical proposal of the invention are detailed below by specific examples, but not
And are intended to be any limitation on the scope of the invention.
Example 1
The high-strength superfine deep hole grouting reinforcement material comprises 120 parts of silicate cement clinker, 80 parts of fly ash, 38 parts of superfine limestone, 0.70 part of acrylic resin, 15 parts of magnetic nano silicon dioxide and 20 parts of polycarboxylate water reducer, wherein the magnetic nano silicon dioxide is a core-shell structure coated with nickel oxide, and the concrete preparation method comprises the following steps: step 1), mixing and stirring a certain amount of water and a surfactant for 1-2h; step 2), dispersing a proper amount of magnetic metal precursor nickel nitrate in the solution in the step 1), mixing, stirring at room temperature for 3-6h, then adding concentrated ammonia water, and continuing stirring for 1-3h; step 3), adding a proper amount of Tetraethoxysilane (TEOS), stirring for 1-2 days at room temperature, adding a certain amount of ethanol, continuously stirring for 1-2 hours, centrifuging, continuously washing with ethanol for 2 times, drying, and then programming to 300 ℃ and calcining for 2-4 hours to obtain the core-shell structure nano silicon dioxide (shown in figure 1), wherein the molar ratio of the surfactant sodium dodecyl benzene sulfonate in step 1) to water is 1.0 (1000-2000), and the molar ratio of the nickel nitrate to the surfactant is 0.6:1.0, the molar ratio of TEOS to surfactant in step 3) is 7:1.
comparative example 1
A high-strength superfine deep hole grouting reinforcement material comprises 120 parts of silicate cement clinker, 80 parts of fly ash, 38 parts of superfine limestone, 0.70 part of acrylic resin, 15 parts of nano silicon dioxide and 20 parts of polycarboxylate water reducer.
The grouting reinforcement materials of the embodiment 1 and the comparative example 1 are subjected to grouting after being formed into slurry by water, then the grouting materials of the embodiment 1 and the comparative example 1 are subjected to magnetization treatment by adopting a magnetization device with the magnetic field strength of 1.5T, and physical properties of the embodiment 1 are tested, so that the slurry of the embodiment 1 is remarkably improved in stability, the water separation rate is reduced by 15%, the calculi rate is improved by 20%, and the impermeability is also remarkably improved.
Claims (7)
1. A high-strength superfine deep hole grouting reinforcement material is characterized in that: comprises 100-140 parts of silicate cement clinker, 60-100 parts of fly ash, 24-48 parts of superfine limestone, 0.5-10 parts of thickening resin, 5-25 parts of magnetic nano silicon dioxide and 15-30 parts of polycarboxylate water reducer; the magnetic nano silicon dioxide is a core-shell structure of silicon dioxide coated ferric oxide and/or nickel oxide; the preparation method of the magnetic nano silicon dioxide specifically comprises the following steps:
step 1), mixing and stirring a certain amount of water and a surfactant for 1-2h;
step 2), dispersing a proper amount of magnetic metal precursor nickel nitrate and/or ferric nitrate in the solution in the step 1), mixing, stirring at room temperature for 3-6h, then adding concentrated ammonia water, and continuing stirring for 1-3h;
and 3) adding a proper amount of Tetraethoxysilane (TEOS), stirring for 1-2 days at room temperature, adding a certain amount of ethanol, continuously stirring for 1-2 hours, centrifuging, continuously washing with ethanol for 2 times, drying, and then heating to 300 ℃ by programming to calcine for 2-4 hours to obtain the core-shell structure of the silicon dioxide coated ferric oxide and/or nickel oxide.
2. The high-strength ultra-fine deep hole grouting reinforcement material according to claim 1, wherein: the thickening resin is acrylic resin.
3. The high-strength ultra-fine deep hole grouting reinforcement material according to claim 1, wherein: the surfactant in step 1) is an anionic surfactant.
4. A high-strength ultra-fine deep hole grouting reinforcement material according to claim 3, wherein: the anionic surfactant is sodium dodecyl benzene sulfonate or sodium fatty alcohol ether sulfate.
5. The high-strength ultra-fine deep hole grouting reinforcement material according to claim 1, wherein: the molar ratio of the surfactant to the water in the step 1) is 1.0 (1000-2000).
6. The high-strength ultra-fine deep hole grouting reinforcement material according to claim 1, wherein: the molar ratio of the magnetic metal precursor to the surfactant in the step 2) is (0.1-0.8): 1.0.
7. the high-strength ultra-fine deep hole grouting reinforcement material according to claim 1, wherein: the mol ratio of TEOS to the surfactant in the step 3) is (5-10): 1.0.
Priority Applications (1)
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| CN202210485653.8A CN114956721B (en) | 2022-05-06 | 2022-05-06 | High-strength superfine deep hole grouting reinforcement material and preparation method thereof |
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| CN202210485653.8A CN114956721B (en) | 2022-05-06 | 2022-05-06 | High-strength superfine deep hole grouting reinforcement material and preparation method thereof |
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| CN114956721A CN114956721A (en) | 2022-08-30 |
| CN114956721B true CN114956721B (en) | 2023-05-23 |
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Citations (7)
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| JP2003138752A (en) * | 2001-11-02 | 2003-05-14 | Tetsuji Tatsuoka | Magnetic cement filling construction method |
| JP2007217453A (en) * | 2006-02-14 | 2007-08-30 | Denki Kagaku Kogyo Kk | Grout, its manufacturing process, grouting work using it |
| CN104628422A (en) * | 2015-01-27 | 2015-05-20 | 济南大学 | Method for enabling cement or concrete to have wave absorbing performance and dense surface by using silicon dioxide (SiO2) coated magnetic nanoparticles |
| WO2015076838A1 (en) * | 2013-11-25 | 2015-05-28 | Halliburton Energy Services, Inc. | Novel cement composition for lost circulation application |
| CN105272069A (en) * | 2015-11-23 | 2016-01-27 | 河南理工大学 | Superfine portland cement-based injecting paste material and preparation method thereof |
| CN106833567A (en) * | 2017-03-23 | 2017-06-13 | 中国石油大学(华东) | A kind of high-intensity high-tenacity high temperature resistant well cementing mortar architecture and preparation method thereof and method for designing |
| AU2021101173A4 (en) * | 2021-03-04 | 2021-07-08 | Nanjing Tech University | Alkaline cementitious material of c-a-s-h seed crystal, preparation method and use thereof |
Family Cites Families (6)
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|---|---|---|---|---|
| KR101151792B1 (en) * | 2010-03-12 | 2012-05-31 | 연세대학교 산학협력단 | Coated magnetic silica nano complexes and preparation method thereof |
| CN103285791B (en) * | 2013-05-10 | 2016-03-16 | 深圳大学 | A kind of based on metal ion-modified magnetic mesoporous silicon dixoide nucleocapsid structure compatible micro balloons and its preparation method and application |
| CN103551094B (en) * | 2013-11-22 | 2015-04-22 | 齐齐哈尔大学 | Preparation method of core-shell structured Fe3O4@MCM-41 magnetic nano material |
| CN109014245B (en) * | 2018-09-03 | 2020-04-07 | 大连理工大学 | Nitrogen-doped carbon-coated magnetic nanoparticle composite microsphere and preparation method thereof |
| CN109852159A (en) * | 2019-01-30 | 2019-06-07 | 姚国辉 | A kind of airsetting lightweight surface layer exterior coating |
| CN110714788A (en) * | 2019-11-14 | 2020-01-21 | 重庆国翔新材料有限公司 | Grouting repair method for secondary lining crack of tunnel |
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2022
- 2022-05-06 CN CN202210485653.8A patent/CN114956721B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| JP2003138752A (en) * | 2001-11-02 | 2003-05-14 | Tetsuji Tatsuoka | Magnetic cement filling construction method |
| JP2007217453A (en) * | 2006-02-14 | 2007-08-30 | Denki Kagaku Kogyo Kk | Grout, its manufacturing process, grouting work using it |
| WO2015076838A1 (en) * | 2013-11-25 | 2015-05-28 | Halliburton Energy Services, Inc. | Novel cement composition for lost circulation application |
| CN104628422A (en) * | 2015-01-27 | 2015-05-20 | 济南大学 | Method for enabling cement or concrete to have wave absorbing performance and dense surface by using silicon dioxide (SiO2) coated magnetic nanoparticles |
| CN105272069A (en) * | 2015-11-23 | 2016-01-27 | 河南理工大学 | Superfine portland cement-based injecting paste material and preparation method thereof |
| CN106833567A (en) * | 2017-03-23 | 2017-06-13 | 中国石油大学(华东) | A kind of high-intensity high-tenacity high temperature resistant well cementing mortar architecture and preparation method thereof and method for designing |
| AU2021101173A4 (en) * | 2021-03-04 | 2021-07-08 | Nanjing Tech University | Alkaline cementitious material of c-a-s-h seed crystal, preparation method and use thereof |
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| CN114956721A (en) | 2022-08-30 |
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