CN117105555B - Composite fiber for asphalt pavement and preparation method thereof - Google Patents
Composite fiber for asphalt pavement and preparation method thereof Download PDFInfo
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- CN117105555B CN117105555B CN202311097981.1A CN202311097981A CN117105555B CN 117105555 B CN117105555 B CN 117105555B CN 202311097981 A CN202311097981 A CN 202311097981A CN 117105555 B CN117105555 B CN 117105555B
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- silica glass
- fiber
- high silica
- glass fiber
- asphalt pavement
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- 239000010426 asphalt Substances 0.000 title claims abstract description 75
- 239000000835 fiber Substances 0.000 title claims abstract description 45
- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000003365 glass fiber Substances 0.000 claims abstract description 85
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 44
- 239000002025 wood fiber Substances 0.000 claims abstract description 44
- 239000007822 coupling agent Substances 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000203 mixture Substances 0.000 description 11
- 239000011159 matrix material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
- C03C25/16—Dipping
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/38—Organo-metal compounds
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of asphalt pavement construction, and provides a composite fiber for an asphalt pavement and a preparation method thereof, wherein the composite fiber comprises the following components in parts by weight: 20-40 parts of high silica glass fiber, 60-80 parts of wood fiber, 1-2 parts of alkaline compound, 1-2 parts of caprolactam and 2-3 parts of coupling agent. Through the technical scheme, the problem that the asphalt for the pavement in the prior art is poor in high temperature resistance and low temperature cracking resistance is solved.
Description
Technical Field
The invention relates to the technical field of asphalt pavement construction, in particular to a composite fiber for an asphalt pavement and a preparation method thereof.
Background
Over 95% of highways in the country are paved with asphalt concrete. The asphalt pavement has good stability, small noise, comfortable driving, quick maintenance and repair and recycling, and can be widely applied to highway construction. With the continuous development of technology, modern highways have a lot of changes, traffic flow and driving frequency are rapidly increased, the axle weight of freight vehicles is continuously increased, and one-way driving of lane division is generally carried out, so that the anti-mobility of the pavement, namely the anti-rutting capability at high temperature, is required to be further improved; the flexibility and the elasticity, namely the cracking resistance at low temperature, the wear resistance and the energy consumption are improved, and the service life is prolonged.
At present, a blending system with matrix asphalt has thermodynamic instability and is easy to isolate; meanwhile, the binding force of colloid, asphaltene, modified filler and the like in the asphalt component is weak, so that the stress transmission efficiency is low, the product performance is not ideal, the application in road construction is difficult to meet, and meanwhile, the pavement performance requirement with increasing traffic volume cannot be met by adding a single traditional filler into the asphalt mixture. In addition, the existing road asphalt has weak performance in high temperature resistance, and has low compactness and easy cracking and foaming in the use process.
Disclosure of Invention
The invention provides a composite fiber for an asphalt pavement and a preparation method thereof, which solve the problems of poor high temperature resistance and poor cracking resistance of asphalt for the pavement in the related technology.
The technical scheme of the invention is as follows:
the invention provides a composite fiber for an asphalt pavement, which comprises the following components in parts by weight: 20-40 parts of high silica glass fiber, 60-80 parts of wood fiber, 1-2 parts of alkaline compound, 1-2 parts of caprolactam and 2-3 parts of coupling agent.
As a further technical scheme, the high silica glass fiber comprises a first high silica glass fiber with the length of 1-2 mm and a second high silica glass fiber with the length of 5-6 mm; the mass ratio of the first high silica glass fiber to the second high silica glass fiber is 7:3-9:1; the length of the wood fiber is 1-3 mm.
As a further technical scheme, the alkaline compound is one of sodium hydroxide, potassium hydroxide and calcium hydroxide.
As a further technical scheme, the coupling agent is titanate coupling agent.
As a further technical scheme, the mass ratio of the high silica glass fiber to the wood fiber is 3:7.
The invention also provides a preparation method of the composite fiber for the asphalt pavement, which comprises the following steps:
s1, dispersing wood fibers in an aqueous solution containing an alkaline compound and caprolactam, treating at 30-50 ℃ for 1-3 hours, filtering, washing to be neutral, and drying to obtain modified wood fibers;
s2, dispersing the high silica glass fiber in an ethanol solution, adding a coupling agent, stirring and mixing for 1-2 hours, filtering, and drying to obtain a modified high silica glass fiber;
and S3, carrying out ultrasonic mixing on the modified wood fiber and the modified high silica glass fiber to obtain the composite fiber for the asphalt pavement.
As a further technical scheme, the mass of the water in the S1 is 7-10 times of the total mass of the alkaline compound and the caprolactam.
As a further technical scheme, the mass of the ethanol solution in the S2 is 3-5 times of that of the high silica glass fiber.
As a further technical scheme, the ultrasonic mixing time in the step S3 is 20-40 min.
The composite fiber for the asphalt pavement or the composite fiber for the asphalt pavement prepared by the preparation method is applied to the asphalt pavement.
The working principle and the beneficial effects of the invention are as follows:
1. according to the invention, after the composite fiber of the high silica glass fiber and the wood fiber is added into the asphalt mixture, the prepared road asphalt has excellent high temperature resistance and low temperature cracking resistance.
2. According to the invention, the surface roughening treatment is carried out on the wood fibers by adopting the alkaline compound and caprolactam, so that the binding force between the wood fibers and the asphalt matrix is improved, the surface of the high silica glass fibers is coated by adopting the coupling agent, the dispersity among the high silica glass fibers and the compatibility with the asphalt matrix are improved, and the road asphalt is remarkably improved in excellent high-temperature stability and low-temperature cracking resistance.
3. According to the invention, the lengths of the first high silica glass fiber, the second high silica glass fiber and the wood fiber are optimized, so that the first high silica glass fiber, the second high silica glass fiber and the wood fiber are better intertwined and have better affinity with asphalt, and the prepared composite fiber is added into an asphalt mixture to form a three-dimensional and stable reticular structure, so that the strength and the high-temperature stability of the mixture are improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples and comparative examples, high silica glass fibers were purchased from Shenzhen fiber technologies Co., ltd; wood fiber, available from tay fiber limited; titanate coupling agent HY-101, purchased from Huaian and metachemical industry Co., ltd; titanate coupling agent TY-201, available from Lv Biing (Jining) chemical technology Co., ltd; titanate coupling agent QX-401, available from Chengtian fine chemical Co., ltd.
Example 1
The composite fiber for the asphalt pavement comprises the following components in parts by weight: 14 parts of first high silica glass fiber with the length of 1mm, 6 parts of second high silica glass fiber with the length of 5mm, 80 parts of wood fiber with the length of 1mm, 2 parts of sodium hydroxide, 2 parts of caprolactam and 2 parts of titanate coupling agent HY-101.
The preparation method of the composite fiber for the asphalt pavement comprises the following steps:
s1, dispersing wood fiber in an aqueous solution containing sodium hydroxide and caprolactam, treating for 3 hours at 30 ℃, filtering, washing to be neutral, and drying to obtain modified wood fiber, wherein the mass of water is 7 times of the total mass of sodium hydroxide and caprolactam;
s2, dispersing the first high silica glass fiber and the second high silica glass fiber in an ethanol solution, adding a titanate coupling agent HY-101, stirring and mixing for 1h, filtering, and drying to obtain the modified high silica glass fiber, wherein the mass of the ethanol solution is 3 times of the total mass of the first high silica glass fiber and the second high silica glass fiber;
s3, carrying out ultrasonic mixing on the modified wood fiber and the modified high silica glass fiber for 20min to obtain the composite fiber for the asphalt pavement.
Example 2
The composite fiber for the asphalt pavement comprises the following components in parts by weight: 21 parts of first high silica glass fiber with the length of 2mm, 9 parts of second high silica glass fiber with the length of 6mm, 70 parts of wood fiber with the length of 2mm, 1.5 parts of potassium hydroxide, 1.5 parts of caprolactam and 2.5 parts of titanate coupling agent TY-201.
The preparation method of the composite fiber for the asphalt pavement comprises the following steps:
s1, dispersing wood fiber in an aqueous solution containing potassium hydroxide and caprolactam, treating for 2 hours at 40 ℃, filtering, washing to be neutral, and drying to obtain modified wood fiber, wherein the mass of water is 8.5 times of the total mass of potassium hydroxide and caprolactam;
s2, dispersing the first high silica glass fiber and the second high silica glass fiber in an ethanol solution, adding a titanate coupling agent TY-201, stirring and mixing for 1.5 hours, filtering, and drying to obtain the modified high silica glass fiber, wherein the mass of the ethanol solution is 4 times of the total mass of the first high silica glass fiber and the second high silica glass fiber;
s3, carrying out ultrasonic mixing on the modified wood fiber and the modified high silica glass fiber for 30min to obtain the composite fiber for the asphalt pavement.
Example 3
The composite fiber for the asphalt pavement comprises the following components in parts by weight: 28 parts of first high silica glass fiber with the length of 2mm, 12 parts of second high silica glass fiber with the length of 5mm, 60 parts of wood fiber with the length of 3mm, 1 part of calcium hydroxide, 1 part of caprolactam and 3 parts of titanate coupling agent QX-401.
The preparation method of the composite fiber for the asphalt pavement comprises the following steps:
s1, dispersing wood fiber in an aqueous solution containing potassium hydroxide and caprolactam, treating for 1h at 50 ℃, filtering, washing to be neutral, and drying to obtain modified wood fiber, wherein the mass of water is 10 times of the total mass of potassium hydroxide and caprolactam;
s2, dispersing the first high silica glass fiber and the second high silica glass fiber in an ethanol solution, adding a titanate coupling agent QX-401, stirring and mixing for 2 hours, filtering, and drying to obtain the modified high silica glass fiber, wherein the mass of the ethanol solution is 5 times of the total mass of the first high silica glass fiber and the second high silica glass fiber;
s3, carrying out ultrasonic mixing on the modified wood fiber and the modified high silica glass fiber for 40min to obtain the composite fiber for the asphalt pavement.
Example 4
This example differs from example 2 only in that 24 parts of the first high silica glass fiber and 6 parts of the second high silica glass fiber are added.
Example 5
This example differs from example 2 only in that 27 parts of the first high silica glass fiber and 3 parts of the second high silica glass fiber are added.
Example 6
This example differs from example 2 only in that 18 parts of the first high silica glass fiber and 12 parts of the second high silica glass fiber are added.
Example 7
This example differs from example 2 only in that 28.5 parts of the first high silica glass fiber was added and 1.5 parts of the second high silica glass fiber was added.
Example 8
This example differs from example 2 only in that 21 parts of the first high silica glass fiber, 9 parts of the second high silica glass fiber, 60 parts of wood fiber were added.
Example 9
This example differs from example 2 only in that the first high silica glass fiber was not added and only 30 parts of the second high silica glass fiber was added.
Example 10
This example differs from example 2 only in that no second high silica glass fiber was added and only 30 parts of the first high silica glass fiber was added.
Comparative example 1
The comparative example differs from example 2 only in that the composite fiber for asphalt pavement includes only the modified silica glass fiber, and the preparation method thereof includes the steps of:
dispersing 2mm of first high silica glass fiber and 6mm of second high silica glass fiber in an ethanol solution, adding titanate coupling agent TY-201, stirring and mixing for 1.5h, filtering and drying to obtain modified high silica glass fiber, wherein the mass of the ethanol solution is 4 times of the total mass of the 2mm of first high silica glass fiber and the 7mm of second high silica glass fiber.
Comparative example 2
The comparative example differs from example 2 only in that only modified wood fibers are included in the composite fibers for asphalt pavement, and the preparation method thereof includes the steps of:
dispersing wood fiber of 2mm in aqueous solution containing potassium hydroxide and caprolactam, treating at 40 ℃ for 2 hours, filtering, washing to neutrality, and drying to obtain modified wood fiber, wherein the mass of water is 8.5 times of the total mass of potassium hydroxide and caprolactam.
Comparative example 3
This comparative example differs from example 9 only in that caprolactam is replaced by N, N-dimethylacetamide.
5 parts of the composite fiber for the asphalt pavement, which is obtained in the examples 1-10 and the comparative examples 1-3, are added into 100 parts of asphalt mixture, and the mixture is mixed to obtain asphalt for the pavement; the asphalt mixture specifically comprises the following components in parts by weight: 10 parts of asphalt, 65 parts of crushed stone coarse aggregate and 25 parts of machine-made sand fine aggregate.
The road asphalt to which the composite fibers for asphalt road surfaces of examples 1 to 10 and comparative examples 1 to 3 were added was tested for marshall stability and high temperature rutting resistance at a test temperature of 60 ℃ and low temperature cracking resistance at a test temperature of-10 ℃ according to the test method in JTG E20-2011, test procedure for road engineering asphalt and asphalt mixture, and the test results are shown in table 1.
When no composite fiber for asphalt pavement is added, the Marshall stability of the asphalt mixture is 4.20kN, the rutting stability is 3809 times/min, and the splitting tensile strength is 1.24MPa.
Table 1 asphalt performance test results for pavement
The data of comparative examples 2, 9-10 and 1-2 show that the asphalt for road surface prepared by adding the composite fiber of the first high silica glass fiber, the second high silica glass fiber and the wood fiber to the asphalt mixture in the example 2 has the Marshall stability and rutting stability at high temperature and the splitting tensile strength at low temperature higher than those of the asphalt for road surface prepared by adding the composite fiber of the high silica glass fiber and the wood fiber of examples 9-10 and 1-2, and the asphalt for road surface prepared by adding the composite fiber of the high silica glass fiber and the wood fiber of different stages to the asphalt mixture has excellent high-temperature stability and low-temperature cracking resistance.
The data of comparative examples 2 and examples 4 to 8 show that the high-temperature stability and the low-temperature cracking resistance of the asphalt for pavement can be improved by adjusting the ratio of the wood fiber to the high silica glass fiber and the ratio of the first high silica glass fiber to the second high silica glass fiber.
From the data of comparative examples 9 and 3, it was found that when the modified wood fibers surface-treated with the alkali compound and caprolactam in example 9 were applied to a road asphalt, the high temperature stability and low temperature cracking resistance of the road asphalt were higher than those of the road asphalt using N, N-dimethylacetamide in comparative example 3, indicating that the modified wood fibers surface-treated with the alkali compound and caprolactam were stronger in binding force with the asphalt and better in dispersion, and the high temperature stability and low temperature cracking resistance of the road asphalt could be improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The composite fiber for the asphalt pavement is characterized by comprising the following components in parts by weight: 20-40 parts of high silica glass fiber, 60-80 parts of wood fiber, 1-2 parts of alkaline compound, 1-2 parts of caprolactam and 2-3 parts of coupling agent;
the high silica glass fiber comprises a first high silica glass fiber with the length of 1-2 mm and a second high silica glass fiber with the length of 5-6 mm; the mass ratio of the first high silica glass fiber to the second high silica glass fiber is 7:3-9:1; the length of the wood fiber is 1-3 mm;
the preparation method of the composite fiber for the asphalt pavement comprises the following steps:
s1, dispersing wood fibers in an aqueous solution containing an alkaline compound and caprolactam, treating at 30-50 ℃ for 1-3 hours, filtering, washing to be neutral, and drying to obtain modified wood fibers;
s2, dispersing the high silica glass fiber in an ethanol solution, adding a coupling agent, stirring and mixing for 1-2 hours, filtering, and drying to obtain a modified high silica glass fiber;
and S3, carrying out ultrasonic mixing on the modified wood fiber and the modified high silica glass fiber to obtain the composite fiber for the asphalt pavement.
2. The composite fiber for asphalt pavement according to claim 1, wherein the alkaline compound is one of sodium hydroxide, potassium hydroxide and calcium hydroxide.
3. The composite fiber for asphalt pavement according to claim 1, wherein the coupling agent is titanate coupling agent.
4. The composite fiber for asphalt pavement according to claim 1, wherein the mass ratio of the high silica glass fiber to the wood fiber is 3:7.
5. The method for preparing the composite fiber for asphalt pavement according to any one of claims 1 to 4, characterized by comprising the steps of:
s1, dispersing wood fibers in an aqueous solution containing an alkaline compound and caprolactam, treating at 30-50 ℃ for 1-3 hours, filtering, washing to be neutral, and drying to obtain modified wood fibers;
s2, dispersing the high silica glass fiber in an ethanol solution, adding a coupling agent, stirring and mixing for 1-2 hours, filtering, and drying to obtain a modified high silica glass fiber;
and S3, carrying out ultrasonic mixing on the modified wood fiber and the modified high silica glass fiber to obtain the composite fiber for the asphalt pavement.
6. The method for producing a composite fiber for asphalt pavement according to claim 5, wherein the mass of water in S1 is 7 to 10 times the total mass of the alkali compound and caprolactam.
7. The method for preparing composite fibers for asphalt pavement according to claim 5, wherein the mass of the ethanol solution in S2 is 3-5 times of the mass of the high silica glass fibers.
8. The method for preparing the composite fiber for the asphalt pavement according to claim 5, wherein the ultrasonic mixing time in the step S3 is 20-40 min.
9. Use of the composite fiber for asphalt pavement according to any one of claims 1 to 4 or the composite fiber for asphalt pavement prepared by the preparation method according to any one of claims 5 to 8 in asphalt pavement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311097981.1A CN117105555B (en) | 2023-08-29 | 2023-08-29 | Composite fiber for asphalt pavement and preparation method thereof |
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| CN202311097981.1A CN117105555B (en) | 2023-08-29 | 2023-08-29 | Composite fiber for asphalt pavement and preparation method thereof |
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| CN117105555B true CN117105555B (en) | 2024-03-22 |
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| JP2007008758A (en) * | 2005-06-30 | 2007-01-18 | Jtekt Corp | Composite material |
| CN1908256A (en) * | 2006-08-17 | 2007-02-07 | 付庆福 | Composite fiber and preparation method thereof |
| CN1923904A (en) * | 2006-08-17 | 2007-03-07 | 付庆福 | Composite modified fiber and preparation method thereof |
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|---|---|---|---|---|
| JP2007008758A (en) * | 2005-06-30 | 2007-01-18 | Jtekt Corp | Composite material |
| CN1908256A (en) * | 2006-08-17 | 2007-02-07 | 付庆福 | Composite fiber and preparation method thereof |
| CN1923904A (en) * | 2006-08-17 | 2007-03-07 | 付庆福 | Composite modified fiber and preparation method thereof |
| CN107162493A (en) * | 2016-03-07 | 2017-09-15 | 中房创通建设集团有限公司 | A kind of modified asphalt concrete and preparation method thereof, construction method |
| CN115974457A (en) * | 2022-12-27 | 2023-04-18 | 重庆鑫科新型建筑材料有限责任公司 | High-strength asphalt concrete and preparation method thereof |
Non-Patent Citations (1)
| Title |
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