CN114751714B - Inorganic rapid-hardening double-liquid grouting reinforcement material for mine - Google Patents
Inorganic rapid-hardening double-liquid grouting reinforcement material for mine Download PDFInfo
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- CN114751714B CN114751714B CN202210485648.7A CN202210485648A CN114751714B CN 114751714 B CN114751714 B CN 114751714B CN 202210485648 A CN202210485648 A CN 202210485648A CN 114751714 B CN114751714 B CN 114751714B
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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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
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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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- 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
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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
According to the mineral inorganic rapid-setting double-liquid grouting reinforcement material, the added nano silicon dioxide has higher volcanic ash activity, the microstructure of a cement-based material is improved by consuming C-H in a hydration product and generating more C-S-H, and the microscopic defects are reduced, so that the mechanical property and durability of the material are improved, and most of the hydration product can only grow on the surface of cement particles when the nano material is not added. The nano material has high activity, the surface of the nano material can provide additional nucleation sites for the growth of hydration products, the multi-point growth of the hydration products is promoted, the flexural strength and the compressive strength of concrete can be improved by adding ultrafine limestone, the early strength of the concrete is obviously improved, in addition, the nano silicon dioxide is magnetized, and the nano particles can be prevented from aggregating and settling by applying a high-strength magnetic field at the initial stage of grouting, so that the nano silicon dioxide is more easily injected into small cracks, collapse caused by the settlement of the upper stone body is prevented, and the impermeability and the water plugging effect are also improved.
Description
Technical Field
The invention belongs to the technical field of grouting filling materials, and particularly relates to an inorganic rapid-setting double-liquid grouting reinforcing material for a mine.
Background
China is a big energy resource country, the coal consumption is the first in the world, shallow buried deep coal beds tend to be exhausted along with the mass recovery of coal, coal mine enterprises have to mine to the deep part, the coal mine tunnel breakage brings threat to the safety production of coal mines under the influence of high ground stress action and strong mining action, and grouting reinforcement is a powerful means for controlling tunnel coal rock body breakage. In the past, the grouting is mostly made of high polymer materials, although the material has good effect, the cost is high, and the high temperature is caused by using a large amount of the material, so that unstable factors are brought to the safe production of coal mines. Therefore, the inorganic grouting material is widely applied, and although the inorganic single-liquid setting time is long, the cement-water glass double-liquid slurry is quickly set after being mixed, so that the crushed coal rock mass can be effectively treated.
Chinese patent CN101974319B discloses a double-liquid quick-setting slurry for roadway grouting and soft soil compaction grouting, which consists of a liquid A and a liquid B, wherein the liquid A and the liquid B are injected in equal volumes, and the field operation is simple; the first liquid consists of Portland cement, inorganic sodium salt, organic alcohol early strength agent and the balance of water, and the second liquid consists of fly ash, sodium silicate and the balance of water. The grout has adjustable gelation time, high early compressive strength, good durability of the stone body, no cracking and no pulverization, obviously improves the durability of the stone body of the grout compared with the original 'cement-water glass grout', saves the using amount of sodium silicate, greatly reduces the grouting cost, but requires a grouting material to have certain diffusion radius and smaller porosity when underground engineering water inrush is treated, and can be injected into cracks and achieve the effect of water plugging.
Therefore, how to provide an inorganic quick-setting double-liquid grouting reinforcement material with better water plugging effect is a technical problem which is expected to be solved.
Disclosure of Invention
Aiming at the prior art, the invention provides a mineral inorganic rapid-hardening double-liquid grouting reinforcement material, which consists of liquid A and liquid B and is characterized in that: the liquid A comprises 200-400 parts of cement, 15-55 parts of fly ash, 5-25 parts of magnetic nano silicon dioxide, 0.5-3 parts of retarder and 300-500 parts of water; the liquid B comprises 160-300 parts of water glass, 50-70 parts of superfine limestone and 400-600 parts of water.
Preferably, the retarder is borax or citric acid;
preferably, the baume degree of the water glass is 30-40 degrees, and the modulus is 2.8-3.3.
Preferably, the magnetic nano-silica is a core-shell structure coated with iron sesquioxide 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 1-2 hours;
step 2), dispersing a proper amount of magnetic metal precursor nickel nitrate and/or ferric nitrate in the solution obtained in the step 1), mixing, stirring at room temperature for 3-6h, adding concentrated ammonia water, and continuing stirring for 1-3h;
and 3), adding a proper amount of Tetraethoxysilane (TEOS), stirring at room temperature for 1-2 days, adding a certain amount of ethanol, continuously stirring for 1-2 hours, then carrying out centrifugal separation, continuously washing with alcohol for 2 times, drying, and then carrying out temperature programming to 300 ℃ for calcining for 2-4 hours to obtain the core-shell structure nano silicon dioxide coated with the ferric oxide and/or the nickel oxide.
Preferably, the surfactant in step 1) is an anionic surfactant, and more preferably, the anionic surfactant is sodium dodecyl benzene sulfonate or sodium fatty alcohol ether sulfate.
Preferably, the molar ratio of the surfactant to the water in step 1) is 1.0 (1000 to 2000).
Preferably, the molar ratio of the magnetic metal precursor to the surfactant in the step 1) is (0.1 to 0.8): 1.0.
preferably, the molar ratio of TEOS to the surfactant in the step 3) is (5-10): 1.0.
the preparation method of the inorganic rapid-setting double-liquid grouting reinforcement material for the mine comprises the following steps:
weighing the components of the solution A according to the proportion, then putting the cement and the fly ash into water according to the proportion, and uniformly stirring; adding retarder and magnetic nano silicon dioxide, stirring to obtain solution A, taking water glass according to the proportion to obtain solution B, pouring the solution A into the solution B, and stirring uniformly to obtain the double-solution grouting material.
Compared with the prior art, the mineral inorganic quick-setting double-liquid grouting reinforcement material has higher pozzolanic activity due to the addition of the nano-silica, improves the microstructure of a cement-based material by consuming C-H in a hydration product and generating more C-S-H, reduces microscopic defects, improves the mechanical property and durability of the material, and most of the hydration product can only grow on the surface of cement particles when the nano-material is not added. The nano material has high activity, the surface of the nano material can provide an additional nucleation site for the growth of a hydration product, the multipoint growth of the hydration product is promoted, the flexural strength and the compressive strength of concrete can be improved by adding superfine limestone, the early strength of the concrete is obviously improved, in addition, the nano silicon dioxide is magnetized, and the aggregation and sedimentation of nano particles can be prevented by applying a high-strength magnetic field at the initial stage of grouting, so that the nano silicon dioxide is easier to inject into tiny cracks, the collapse caused by the subsidence of the upper stone body is prevented, and the impermeability and the water plugging effect are also improved.
Detailed Description
The following examples are intended to illustrate the practice and advantageous effects of the present invention, but are not to be construed as limiting the scope of the present invention.
Example 1
A mineral inorganic quick-setting double-liquid grouting reinforcement material consists of liquid A and liquid B, wherein the liquid A comprises 300 parts of cement, 35 parts of fly ash, 15 parts of magnetic nano silicon dioxide, 2 parts of citric acid and 400 parts of water; the liquid B comprises 200 parts of water glass, 60 parts of superfine limestone and 500 parts of water. Wherein the baume degree of the water glass is 30-40 degrees, the modulus is 2.8-3.3, the magnetic nano silicon dioxide is of a core-shell structure coated with nickel oxide, and the specific preparation method is as follows: 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 obtained in the step 1), mixing, stirring at room temperature for 3-6h, 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, then performing centrifugal separation, continuously washing with alcohol for 2 times, drying, then performing temperature programming to 300 ℃ and calcining for 2-4 hours to obtain the core-shell structure nano-silica coated with ferric oxide and/or nickel oxide, wherein in the step 1), a surfactant of sodium dodecyl benzene sulfonate is used, the molar ratio of the surfactant to water is 1.0 (1000-2000), and the molar ratio of 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 mineral inorganic quick-setting double-liquid grouting reinforcement material consists of liquid A and liquid B, wherein the liquid A comprises 300 parts of cement, 35 parts of fly ash, 2 parts of citric acid and 400 parts of water; the liquid B comprises 200 parts of water glass, 60 parts of ultrafine limestone and 500 parts of water.
The liquid A is poured into the liquid B and uniformly mixed in the embodiment 1 and the comparative example 1 respectively to obtain double-liquid grouting material, then the coal seam roadway is grouted, then the magnetizing device with the magnetic field intensity of 1.5T is used for magnetizing the grouting liquid of the two liquid A and B, and the physical properties of the grouting liquid and the magnetizing device are tested, so that the gelation time of the grouting liquid in the embodiment 1 is shortened by 15 percent, the compressive strength is improved by 20 percent, the calculus rate is improved by 10 percent, and the impermeability and the water plugging effect are also improved compared with the comparative example 1.
Claims (7)
1. The mineral inorganic quick-setting double-liquid grouting reinforcement material consists of liquid A and liquid B, wherein the liquid A comprises 200-400 parts of cement, 15-55 parts of fly ash, 5-25 parts of magnetic nano silicon dioxide, 0.5-3 parts of retarder and 300-500 parts of water; the liquid B comprises 160-300 parts of water glass, 50-70 parts of superfine limestone and 400-600 parts of water, and is characterized in that: the magnetic nano silicon dioxide is a core-shell structure coated with 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 1-2 hours;
step 2), dispersing a proper amount of magnetic metal precursor nickel nitrate and/or ferric nitrate in the solution obtained in the step 1), mixing, stirring at room temperature for 3-6h, adding concentrated ammonia water, and continuing stirring for 1-3h;
and 3) adding a proper amount of Tetraethoxysilane (TEOS), stirring at room temperature for 1-2 days, adding a certain amount of ethanol, continuously stirring for 1-2 hours, then carrying out centrifugal separation, continuously washing with alcohol for 2 times, then drying, and then carrying out temperature programming to 300 ℃ for calcining for 2-4 hours to obtain the core-shell structure nano silicon dioxide coated with ferric oxide and/or nickel oxide.
2. The mining inorganic rapid-setting double-liquid grouting reinforcement material according to claim 1, characterized in that: the retarder is borax or citric acid.
3. The mining inorganic rapid-setting double-liquid grouting reinforcement material according to claim 1, characterized in that: the baume degree of the water glass is 30-40 degrees, and the modulus is 2.8-3.3.
4. The mining inorganic rapid-setting double-liquid grouting reinforcement material according to claim 1, characterized in that: the surfactant in the step 1) is sodium dodecyl benzene sulfonate or fatty alcohol ether sodium sulfate.
5. The mining inorganic rapid-setting double-liquid grouting reinforcement material according to claim 1, characterized in that: in the step 1), the molar ratio of the surfactant to the water is 1.0 (1000-2000).
6. The mining inorganic rapid-setting double-liquid grouting reinforcement material according to claim 1, characterized in that: the molar ratio of the magnetic metal precursor to the surfactant in the step 2) is (0.1-0.8): 1.0.
7. the inorganic rapid-setting two-fluid grouting reinforcement material for the mine according to claim 4, characterized in that: the molar ratio of TEOS to the surfactant in the step 3) is (5-10): 1.0.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210485648.7A CN114751714B (en) | 2022-05-06 | 2022-05-06 | Inorganic rapid-hardening double-liquid grouting reinforcement material for mine |
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| CN202210485648.7A CN114751714B (en) | 2022-05-06 | 2022-05-06 | Inorganic rapid-hardening double-liquid grouting reinforcement material for mine |
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| CN114751714A CN114751714A (en) | 2022-07-15 |
| CN114751714B true CN114751714B (en) | 2023-02-28 |
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| CN115521119B (en) * | 2022-09-06 | 2024-02-27 | 中铁五局集团有限公司 | Grouting material for ultra-high Wen Chongshui treatment in underground operation and construction method |
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| CN103320100B (en) * | 2013-06-18 | 2016-12-28 | 西南石油大学 | A kind of magnetic Nano sealing agent and preparation method thereof |
| CN104628422B (en) * | 2015-01-27 | 2016-08-24 | 济南大学 | A kind of coated with silica magnetic nanoparticle makes the method that cement or concrete have absorbing property and solid surface |
| CN105272069B (en) * | 2015-11-23 | 2017-06-30 | 河南理工大学 | A kind of ultra-fine portland cement base grouting material and preparation method thereof |
| CN112028594A (en) * | 2020-09-14 | 2020-12-04 | 西南交通大学 | Cement-water glass double-liquid grouting material with stable product for shield synchronous grouting |
| CN113250482A (en) * | 2021-05-12 | 2021-08-13 | 三峡大学 | Device and method for sealing floor slab cracks through magnetic slurry |
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