CN114634334A - High-performance concrete material based on nano material - Google Patents
High-performance concrete material based on nano material Download PDFInfo
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- CN114634334A CN114634334A CN202210354356.XA CN202210354356A CN114634334A CN 114634334 A CN114634334 A CN 114634334A CN 202210354356 A CN202210354356 A CN 202210354356A CN 114634334 A CN114634334 A CN 114634334A
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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
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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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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a high-performance concrete material based on a nano material, which comprises fine aggregate, coarse aggregate, cement, fly ash, superfine silica fume, nano alumina, a water reducing agent, water, superfine natural zeolite powder, gypsum, polymer emulsion, a dihydric alcohol compound, modified lignosulfonate and a lamellar silicate mineral material, wherein when the nano alumina is used as an active filler to be filled into cement concrete, the nano alumina can be used as a cement hydration template to effectively participate in the hydration process of the cement, so that the cement concrete structure is more compact, the harmful hardened concrete pore structure can be effectively reduced, and the mechanical property of the corresponding concrete is finally improved; the properties of the cement concrete are improved by the ultrafine silica fume, so that the size of calcium hydroxide crystals in the interface transition region of the hardened cement concrete is effectively reduced, the corresponding micro-morphology becomes compact, and the mechanical strength and the impermeability and durability are effectively improved.
Description
Technical Field
The invention discloses a high-performance concrete material based on a nano material, and belongs to the technical field of preparation of high-performance concrete materials.
Background
With the development factors of various aspects of engineering structures and the rapid expansion of the concrete material boundary, the requirements of people on concrete structure materials are continuously improved. The nano material with a plurality of unique effects is doped into concrete, so that the mechanical toughness, intelligent sensing, impermeability and durability of the concrete can be improved. The nanotechnology breaks the limitation of the traditional concrete and brings brand-new vitality to the concrete material.
The existing high-performance concrete is characterized in that the low water-cement ratio is adopted, high-quality raw materials are selected, and sufficient admixtures and efficient admixtures are added, and the admixtures can change the properties of the concrete, so that the durability, the working performance, the applicability, the strength, the volume stability and the economy of the concrete are improved, but the performance of the existing high-performance concrete still has defects.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the problems in the prior art and provide a high-performance concrete material based on a nano material, thereby solving the problems.
In order to achieve the purpose, the invention provides the following technical scheme: a high-performance concrete material based on a nano material comprises fine aggregate, coarse aggregate, cement, fly ash, superfine silica fume, nano alumina, a water reducing agent, water, superfine natural zeolite powder, gypsum, polymer emulsion, a dihydric alcohol compound, modified lignosulfonate and a lamellar silicate mineral material.
Preferably, the dosage of the superfine silica fume is 2%, and the dosage of the nano alumina is 3%.
Preferably, the diol compound is alkylene glycol and polyoxyalkylene glycol in a mass ratio of 1: 1, the modified lignosulfonate is alkali-free modified calcium lignosulfonate and modified magnesium lignosulfonate in a mass ratio of 1: 1, and the sheet phyllosilicate mineral material is a phyllosilicate-based thixotropic lubricant.
Preferably, the concrete comprises the following components in parts by weight: 80-90 parts of fine aggregate, 90-100 parts of coarse aggregate, 60-80 parts of cement, 10-30 parts of slag, 20-25 parts of fly ash, 15-20 parts of superfine silica fume, 8-12 parts of nano alumina, 0.8-2.3 parts of water reducing agent, 31-45 parts of water, 0.5-0.7 part of superfine natural zeolite powder, 0.8-1.6 parts of gypsum, 0.3-0.8 part of polymer emulsion, 0.6-1.2 parts of dihydric alcohol compound, 0.1-0.3 part of modified lignosulfonate and 1-2 parts of lamellar silicate mineral material.
Preferably, the particle size of the nano alumina is less than 30nm, and the particle size of the superfine silica fume is less than 50 nm.
The preparation method of the high-performance concrete material based on the nano material is characterized by comprising the following steps:
firstly, extracting component raw materials of a plurality of concrete materials in proportion;
weighing a certain amount of aluminum ammonium sulfate and ammonium bicarbonate, preparing water solution with a certain concentration by using deionized water respectively, then dropwise adding NH4Al (SO4)2 solution into a mixed solution of a certain amount of polyethylene glycol-containing ammonium bicarbonate, adding a certain amount of ammonia water to adjust the pH value, and calcining an aluminum ammonium carbonate precursor for 1-2 hours at different temperatures (800-1200 ℃) to obtain nano aluminum oxide powder with different crystal forms;
step three, collecting silicon steam discharged from a flue when smelting ferrosilicon and industrial silicon, after the silicon steam is oxidized, collecting amorphous powdery silicon dioxide powder by a specially designed dust collector, and extracting to produce superfine silicon ash;
step four, mixing the nano alumina powder and the superfine silica fume into the components of the concrete material;
and step five, obtaining the high-performance concrete material based on the nano material after fully mixing.
Compared with the prior art, the invention has the following beneficial effects: when the nano alumina is used as an active filler and filled into cement concrete, the nano alumina can be used as a cement hydration template and effectively participate in the hydration process of cement, so that the cement concrete structure is more compact, the harmful hardened concrete pore structure can be effectively reduced, and the mechanical property of corresponding concrete is finally improved; the properties of the cement concrete are improved by the ultrafine silica fume, so that the size of calcium hydroxide crystals in the interface transition region of the hardened cement concrete is effectively reduced, the corresponding micro-morphology becomes compact, and the mechanical strength and the impermeability and durability are effectively improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A high-performance concrete material based on a nano material comprises fine aggregate, coarse aggregate, cement, fly ash, superfine silica fume, nano alumina, a water reducing agent, water, superfine natural zeolite powder, gypsum, polymer emulsion, a dihydric alcohol compound, modified lignosulfonate and a lamellar silicate mineral material.
The dosage of the superfine silica fume is 2 percent, and the dosage of the nano alumina is 3 percent.
The dihydric alcohol compound is alkylene glycol and polyoxyalkylene glycol with the mass ratio of 1: 1, the modified lignosulfonate is alkali-free modified calcium lignosulfonate and modified magnesium lignosulfonate with the mass ratio of 1: 1, and the sheet phyllosilicate mineral material is a thixotropic lubricant based on phyllosilicate.
The concrete comprises the following components in parts by weight: 80-90 parts of fine aggregate, 90-100 parts of coarse aggregate, 60-80 parts of cement, 10-30 parts of slag, 20-25 parts of fly ash, 15-20 parts of superfine silica fume, 8-12 parts of nano alumina, 0.8-2.3 parts of water reducing agent, 31-45 parts of water, 0.5-0.7 part of superfine natural zeolite powder, 0.8-1.6 parts of gypsum, 0.3-0.8 part of polymer emulsion, 0.6-1.2 parts of dihydric alcohol compound, 0.1-0.3 part of modified lignosulfonate and 1-2 parts of lamellar silicate mineral material.
The grain size of the nano alumina is less than 30nm, and the grain size of the superfine silica fume is less than 50 nm.
The preparation method of the high-performance concrete material based on the nano material is characterized by comprising the following steps:
firstly, extracting component raw materials of a plurality of concrete materials in proportion;
weighing a certain amount of aluminum ammonium sulfate and ammonium bicarbonate, preparing water solution with a certain concentration by using deionized water respectively, then dropwise adding NH4Al (SO4)2 solution into a mixed solution of a certain amount of polyethylene glycol-containing ammonium bicarbonate, adding a certain amount of ammonia water to adjust the pH value, and calcining an aluminum ammonium carbonate precursor for 1-2 hours at different temperatures (800-1200 ℃) to obtain nano aluminum oxide powder with different crystal forms;
step three, collecting silicon steam discharged from a flue when smelting ferrosilicon and industrial silicon, after the silicon steam is oxidized, collecting amorphous powdery silicon dioxide powder by a specially designed dust collector, and extracting to produce superfine silicon ash;
step four, mixing the nano alumina powder and the superfine silica fume into the components of the concrete material;
and step five, obtaining the high-performance concrete material based on the nano material after fully mixing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A high-performance concrete material based on a nano material is characterized by comprising fine aggregate, coarse aggregate, cement, fly ash, superfine silica fume, nano alumina, a water reducing agent, water, superfine natural zeolite powder, gypsum, polymer emulsion, a dihydric alcohol compound, modified lignosulfonate and a lamellar silicate mineral material.
2. The nanomaterial-based high-performance concrete material according to claim 1, characterized in that: the dosage of the superfine silica fume is 2 percent, and the dosage of the nano alumina is 3 percent.
3. The nanomaterial-based high-performance concrete material according to claim 1, characterized in that: the dihydric alcohol compound is alkylene glycol and polyoxyalkylene glycol with the mass ratio of 1: 1, the modified lignosulfonate is alkali-free modified calcium lignosulfonate and modified magnesium lignosulfonate with the mass ratio of 1: 1, and the sheet phyllosilicate mineral material is a thixotropic lubricant based on phyllosilicate.
4. The nanomaterial-based high-performance concrete material according to claim 1, characterized in that: the concrete comprises the following components in parts by weight: 80-90 parts of fine aggregate, 90-100 parts of coarse aggregate, 60-80 parts of cement, 10-30 parts of slag, 20-25 parts of fly ash, 15-20 parts of superfine silica fume, 8-12 parts of nano alumina, 0.8-2.3 parts of water reducing agent, 31-45 parts of water, 0.5-0.7 part of superfine natural zeolite powder, 0.8-1.6 parts of gypsum, 0.3-0.8 part of polymer emulsion, 0.6-1.2 parts of dihydric alcohol compound, 0.1-0.3 part of modified lignosulfonate and 1-2 parts of lamellar silicate mineral material.
5. The nanomaterial-based high-performance concrete material according to claim 4, characterized in that: the particle size of the nano alumina is less than 30nm, and the particle size of the superfine silica fume is less than 50 nm.
6. A method for preparing a high-performance concrete material based on nanomaterials according to any of claims 1 to 5, characterized by comprising the following steps:
firstly, extracting component raw materials of a plurality of concrete materials in proportion;
weighing a certain amount of aluminum ammonium sulfate and ammonium bicarbonate, preparing the weighed aluminum ammonium sulfate and ammonium bicarbonate into aqueous solution with a certain concentration by using deionized water respectively, then dropwise adding NH4Al (SO4)2 solution into a mixed solution of a certain amount of polyethylene glycol-containing ammonium bicarbonate, adding a certain amount of ammonia water to adjust the pH value, and calcining an aluminum ammonium carbonate precursor at different temperatures (800-1200 ℃) for 1-2 hours to obtain nano aluminum oxide powder with different crystal forms;
step three, collecting silicon steam discharged from a flue when smelting ferrosilicon and industrial silicon, after the silicon steam is oxidized, collecting amorphous powdery silicon dioxide powder by a specially designed dust collector, and extracting to produce superfine silicon ash;
step four, mixing the nano alumina powder and the superfine silica fume into the components of the concrete material;
and step five, obtaining the high-performance concrete material based on the nano material after fully mixing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210354356.XA CN114634334A (en) | 2022-04-06 | 2022-04-06 | High-performance concrete material based on nano material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114890742A (en) * | 2022-05-12 | 2022-08-12 | 湖州职业技术学院(湖州广播电视大学)(湖州社区大学) | Nano-material composite ultra-high performance concrete |
| CN115557753A (en) * | 2022-10-26 | 2023-01-03 | 陕西智诚旭隆智造有限公司 | High-strength corrosion-resistant concrete precast tubular pile and preparation method thereof |
| CN116217178A (en) * | 2023-03-17 | 2023-06-06 | 浙江数智交院科技股份有限公司 | Ultra-high performance concrete and preparation method and application thereof |
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| WO2009016230A2 (en) * | 2007-08-02 | 2009-02-05 | Construction Research & Technology Gmbh | Cement-based grout composition |
| CN104291749A (en) * | 2014-09-22 | 2015-01-21 | 华北水利水电大学 | Concrete material and preparation method thereof |
| CN111470823A (en) * | 2020-04-29 | 2020-07-31 | 上海城建市政工程（集团）有限公司 | Composite cementing material system of ultra-high performance concrete and application method thereof |
| CN111848055A (en) * | 2020-08-07 | 2020-10-30 | 江苏省水利工程科技咨询股份有限公司 | Hydraulic high-performance concrete and preparation method thereof |
| CN112592120A (en) * | 2021-02-08 | 2021-04-02 | 梁水明 | Feldspar waste concrete and preparation method thereof |
| CN113683355A (en) * | 2021-07-13 | 2021-11-23 | 华北水利水电大学 | Composite modified rubber roller compacted concrete and preparation method thereof |
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2022
- 2022-04-06 CN CN202210354356.XA patent/CN114634334A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009016230A2 (en) * | 2007-08-02 | 2009-02-05 | Construction Research & Technology Gmbh | Cement-based grout composition |
| CN104291749A (en) * | 2014-09-22 | 2015-01-21 | 华北水利水电大学 | Concrete material and preparation method thereof |
| CN111470823A (en) * | 2020-04-29 | 2020-07-31 | 上海城建市政工程（集团）有限公司 | Composite cementing material system of ultra-high performance concrete and application method thereof |
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| CN113683355A (en) * | 2021-07-13 | 2021-11-23 | 华北水利水电大学 | Composite modified rubber roller compacted concrete and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114890742A (en) * | 2022-05-12 | 2022-08-12 | 湖州职业技术学院(湖州广播电视大学)(湖州社区大学) | Nano-material composite ultra-high performance concrete |
| CN115557753A (en) * | 2022-10-26 | 2023-01-03 | 陕西智诚旭隆智造有限公司 | High-strength corrosion-resistant concrete precast tubular pile and preparation method thereof |
| CN116217178A (en) * | 2023-03-17 | 2023-06-06 | 浙江数智交院科技股份有限公司 | Ultra-high performance concrete and preparation method and application thereof |
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