CN117645433A - Preparation method of modified asphalt mixture - Google Patents
Preparation method of modified asphalt mixture Download PDFInfo
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- CN117645433A CN117645433A CN202311500062.4A CN202311500062A CN117645433A CN 117645433 A CN117645433 A CN 117645433A CN 202311500062 A CN202311500062 A CN 202311500062A CN 117645433 A CN117645433 A CN 117645433A
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- mixture
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- asphalt
- asphalt mixture
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- 239000010426 asphalt Substances 0.000 title claims abstract description 115
- 239000000203 mixture Substances 0.000 title claims abstract description 100
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000012615 aggregate Substances 0.000 claims description 46
- 238000002156 mixing Methods 0.000 claims description 42
- 239000003795 chemical substances by application Substances 0.000 claims description 37
- 239000003607 modifier Substances 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000002216 antistatic agent Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 16
- 239000000654 additive Substances 0.000 claims description 15
- 238000005336 cracking Methods 0.000 claims description 12
- 239000003112 inhibitor Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000010298 pulverizing process Methods 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 8
- 239000011707 mineral Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- 238000009736 wetting Methods 0.000 claims description 5
- 239000000080 wetting agent Substances 0.000 claims description 5
- 238000007373 indentation Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 11
- 230000003068 static effect Effects 0.000 abstract description 11
- 238000009825 accumulation Methods 0.000 abstract description 7
- 238000011049 filling Methods 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 240000000797 Hibiscus cannabinus Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012535 impurity Substances 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
- 229920000642 polymer Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a preparation method of a modified asphalt mixture, and in particular relates to the technical field of modified asphalt. The invention can help charge to disperse and release rapidly in the mixture, thereby reducing the accumulation of static electricity, effectively eliminating static electricity, reducing the risk of static electricity accumulation and discharge, and simultaneously filling non-aggregate parts of the mixture, which are formed by the asphalt mixture and aggregate, and improving the performance and characteristics of the mixture.
Description
Technical Field
The invention relates to the technical field of modified asphalt, in particular to a preparation method of a modified asphalt mixture.
Background
Asphalt mixtures are materials used for constructing asphalt pavement, which is various types of pavement paved by blending asphalt materials for road use into mineral materials. Asphalt pavement has the advantages of comfortable running, low energy consumption, easy maintenance and the like, the proportion of the asphalt pavement in road construction is higher and higher, and the modified asphalt is prepared by adding a modifier (such as rubber, resin, high-molecular polymer and the like) into asphalt to improve the performance of the asphalt, so that the asphalt has better performances of high-temperature stability, low-temperature crack resistance, aging resistance and the like.
The invention patent with the patent application number of CN201510740030.0 discloses a preparation method of a modified asphalt mixture, which comprises the following steps: firstly, uniformly mixing aggregate and a modifier, then uniformly mixing asphalt, finally uniformly mixing mineral powder, so as to obtain a modified asphalt mixture, firstly uniformly mixing the aggregate and the modifier, then uniformly mixing fibers, then uniformly mixing asphalt, and finally uniformly mixing mineral powder, so as to obtain a modified asphalt mixture;
the invention discloses a preparation method of a bamboo fiber modified asphalt mixture, which comprises the following steps: 1. soaking bamboo fibers in an alkali solution for alkali treatment for 0.5-1.5 hours, cleaning with clear water, drying, and shearing to a length of 1-10 mm; 2. adding the sheared bamboo fibers into the asphalt mixture, uniformly stirring at the temperature of 150-160 ℃ to obtain a bamboo fiber modified asphalt mixture, and uniformly mixing the bamboo fibers subjected to alkali treatment into the asphalt mixture to modify the asphalt mixture, so that the high-temperature stability, the low-temperature crack resistance and the water stability of the asphalt mixture can be effectively improved;
the invention patent of patent application number CN201811280293.8 discloses a modified asphalt mixture with good weather resistance and a preparation method thereof, and the modified asphalt mixture comprises the following components in parts by weight: 15-30 parts of SBS modified asphalt, 2-3 parts of mullite, 3-4 parts of kenaf, 3-6 parts of extracted oil and 100-150 parts of aggregate, and the structure enhances the heat resistance of the mixture; the grid structure formed by the kenaf and the mullite has large specific surface area and strong adsorption force on asphalt, so that the cohesiveness, deformation resistance and water damage resistance of the whole asphalt mixture can be improved; meanwhile, the grid structure can adsorb asphalt with volume expansion at high temperature, reduce oil-flooding disease of asphalt pavement and improve high-temperature stability of the mixture.
However, in the above technical solution, in some cases, static electricity may be generated due to friction or flow on the surface of the asphalt mixture, external dust impurities are easily adsorbed on the surface of the asphalt mixture, and meanwhile, the accumulation of static electricity may cause a risk of fire or explosion
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a preparation method of a modified asphalt mixture, which aims to solve the problems in the prior art.
The invention is realized in such a way that the invention provides the following technical scheme: the preparation method of the modified asphalt mixture comprises the following steps of;
firstly, preparing raw materials: preparing required materials including asphalt, aggregate, filler and additives, and stirring and mixing to obtain a modified asphalt mixture;
in preparation, the bitumen is heated to a suitable temperature to bring it into a fluid state, typically in the temperature range 120-160 degrees celsius, and the filler is pre-treated: pretreating aggregate and filler, including cleaning and screening to ensure that the quality and physical and chemical properties meet the requirements, mixing the pretreated aggregate with asphalt mixed with additives to ensure complete wetting of the aggregate, and controlling the quality of the mixture, including detection and adjustment of temperature, density, viscosity and oil content;
the filler comprises fly ash, mineral powder, an antistatic agent and a functional modifier, and the additive comprises a thickening agent and a wetting agent;
dry preparation, namely uniformly dispersing an antistatic agent and a functional modifier into the whole mixture by stirring after mixing aggregate and asphalt;
adding the solution, dissolving the antistatic agent and the functional modifier in a proper amount of solvent, adding the solution into the asphalt mixture, and stirring or mixing to uniformly disperse the asphalt mixture.
The antistatic agent includes graphite, metal powder and conductive fibers.
The metal powder is any one or more of copper powder and aluminum powder, and the conductive fiber is a common conductive material such as carbon fiber or metal fiber.
The functional modifier comprises a binder, a cracking inhibitor, a water loss resistant agent, an anti-pulverization agent and an anti-rutting agent;
the binder is used for improving the adhesiveness of components in the mixture and promoting the combination of aggregate and asphalt, the cracking inhibitor is used for reducing cracks and damages of the mixture at low temperature, the water loss resistant agent is used for reducing the water sensitivity of the mixture and preventing the influence of water on the performance of the mixture, the chalking resistant agent is used for preventing chalking phenomenon on the surface of asphalt and increasing the durability of a pavement, and the rut resistant agent is used for improving the bearing capacity and deformation resistance of the mixture and preventing the formation of ruts and indentations;
the time required for uniformly mixing the asphalt and the aggregate is 10-20 minutes, the time required for uniformly mixing the antistatic agent and the functional modifier in the dry preparation and the asphalt mixture is 10-20 minutes, and the time required for uniformly mixing the antistatic agent and the functional modifier in the solution addition and the asphalt mixture after dissolving is 2-5 minutes.
The invention has the technical effects and advantages that:
1. according to the invention, by arranging the antistatic agent, charges can be rapidly dispersed and released in the mixture, so that the accumulation of static electricity is reduced, the static electricity can be effectively discharged, and the risks of static electricity accumulation and discharge are reduced;
2. according to the invention, the functional modifier is added to improve the adhesiveness of components in the mixture, promote the combination of aggregate and asphalt, reduce the cracks and damages of the mixture at low temperature, prevent the influence of moisture on the performance of the mixture, reduce the pulverization phenomenon on the surface of the asphalt, and improve the carrying capacity and deformation resistance of the mixture;
3. according to the invention, graphite, metal powder and conductive fibers can be used for filling non-aggregate parts of the asphalt mixture, which are formed by the asphalt mixture and aggregate, so that the performance and the characteristics of the mixture are improved.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled 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.
Example 1
The preparation method of the modified asphalt mixture comprises the following steps of;
firstly, preparing raw materials: preparing required materials including asphalt, aggregate, filler and additives, and stirring and mixing to obtain a modified asphalt mixture;
in preparation, the bitumen is heated to a suitable temperature to bring it into a flowing state, typically 120 degrees celsius in the temperature range, and the filler is pre-treated: the method comprises the steps of preprocessing aggregate and filler, including cleaning and screening, so as to ensure that the quality and physical and chemical properties of the aggregate are in accordance with the requirements, mixing the preprocessed aggregate with asphalt mixed with additives, ensuring complete wetting of the aggregate, and controlling the quality of the mixture, including detection and adjustment of temperature, density, viscosity and oil content.
The filler comprises fly ash, mineral powder, an antistatic agent and a functional modifier, and the additive comprises a thickening agent and a wetting agent;
dry preparation, namely uniformly dispersing an antistatic agent and a functional modifier into the whole mixture by stirring after mixing aggregate and asphalt;
the time required for uniformly mixing the asphalt and the aggregate is 15 minutes, and the time required for uniformly mixing the antistatic agent, the functional modifier and the asphalt mixture is 15 minutes.
The functional modifier comprises a binder, a cracking inhibitor, a water loss resistant agent, an anti-pulverization agent and an anti-rutting agent;
the adhesive is used for improving the adhesiveness of components in the mixture, promoting the combination of aggregate and asphalt, the cracking inhibitor is used for reducing cracks and damages of the mixture at low temperature, the water loss resisting agent is used for reducing the water sensitivity of the mixture, the influence of moisture on the performance of the mixture, the chalking preventing agent is used for preventing chalking phenomenon on the surface of asphalt, the durability of a pavement is improved, and the rutting resisting agent is used for improving the bearing capacity and deformation resistance of the mixture and preventing rutting and indentation from forming;
the mixing rate of the asphalt and the aggregate is 400r/min, and the mixing temperature is 130 ℃;
4 parts of graphite, 7 parts of metal powder and 4 parts of conductive fibers, and 3 parts of binder, 7 parts of cracking inhibitor, 5 parts of water loss resistant agent, 5 parts of anti-pulverization agent and 3 parts of anti-rutting agent.
Example 2
The preparation method of the modified asphalt mixture comprises the following steps of;
firstly, preparing raw materials: preparing required materials including asphalt, aggregate, filler and additives, and stirring and mixing to obtain a modified asphalt mixture;
in preparation, the bitumen is heated to a suitable temperature to bring it into a flowing state, typically 140 degrees celsius in the temperature range, and the filler is pre-treated: the method comprises the steps of preprocessing aggregate and filler, including cleaning and screening, so as to ensure that the quality and physical and chemical properties of the aggregate are in accordance with the requirements, mixing the preprocessed aggregate with asphalt mixed with additives, ensuring complete wetting of the aggregate, and controlling the quality of the mixture, including detection and adjustment of temperature, density, viscosity and oil content.
The filler comprises fly ash, mineral powder, an antistatic agent and a functional modifier, and the additive comprises a thickening agent and a wetting agent;
adding the solution, dissolving the antistatic agent and the functional modifier in a proper amount of solvent, adding the solution into the asphalt mixture, and stirring or mixing to uniformly disperse the asphalt mixture;
the time required for uniformly mixing the asphalt and the aggregate is 15 minutes, and the time required for uniformly mixing the antistatic agent, the functional modifier and the asphalt mixture is 3 minutes;
the functional modifier comprises a binder, a cracking inhibitor, a water loss resistant agent, an anti-pulverization agent and an anti-rutting agent;
the adhesive is used for improving the adhesiveness of components in the mixture, promoting the combination of aggregate and asphalt, the cracking inhibitor is used for reducing cracks and damages of the mixture at low temperature, the water loss resisting agent is used for reducing the water sensitivity of the mixture, the influence of moisture on the performance of the mixture, the chalking preventing agent is used for preventing chalking phenomenon on the surface of asphalt, the durability of a pavement is improved, and the rutting resisting agent is used for improving the bearing capacity and deformation resistance of the mixture and preventing rutting and indentation from forming;
the mixing rate of the asphalt and the aggregate is 500r/min, and the mixing temperature is 140 ℃;
the anti-rutting agent comprises, by weight, 5 parts of graphite, 10 parts of metal powder, 6 parts of conductive fibers, 4 parts of a binder, 10 parts of a cracking inhibitor, 7 parts of a water loss resistance agent, 6 parts of an anti-pulverization agent and 5 parts of an anti-rutting agent.
Example 3
The preparation method of the modified asphalt mixture comprises the following steps of;
firstly, preparing raw materials: preparing required materials including asphalt, aggregate, filler and additives, and stirring and mixing to obtain a modified asphalt mixture;
in preparation, the bitumen is heated to a suitable temperature to bring it to a fluid state, typically 150 degrees celsius in the temperature range, and the filler is pre-treated: the method comprises the steps of preprocessing aggregate and filler, including cleaning and screening, so as to ensure that the quality and physical and chemical properties of the aggregate are in accordance with the requirements, mixing the preprocessed aggregate with asphalt mixed with additives, ensuring complete wetting of the aggregate, and controlling the quality of the mixture, including detection and adjustment of temperature, density, viscosity and oil content.
The filler comprises fly ash, mineral powder and the additive comprises a thickener and a wetting agent;
the time required for uniformly mixing the asphalt and the aggregate is 15 minutes;
the mixing rate of the asphalt and the aggregate is 600r/min, and the mixing temperature is 160 ℃;
6 parts of graphite, 15 parts of metal powder and 8 parts of conductive fibers, and 5 parts of binder, 15 parts of cracking inhibitor, 9 parts of water loss resistant agent, 8 parts of anti-pulverization agent and 6 parts of anti-rutting agent.
Performance testing, namely respectively preparing a matrix asphalt mixture sample and modified asphalt mixture samples of examples 1-3 according to the requirements of highway engineering asphalt and asphalt mixture test procedure (JTG E-20-2011), and testing different road performances;
as can be seen from the table above: the modified asphalt mixtures prepared in the examples 1 to 3 of the invention all meet the related requirements on the road performance of the asphalt mixture in JTG F40-2004 of the technical Specification for construction of Highway asphalt pavement. Compared with the unmodified matrix asphalt mixture, the modified asphalt mixture prepared by the embodiments of the invention has the advantages of excellent conductivity, functional stability and conventional performance, and can help charges to be rapidly dispersed and discharged in the mixture, so that the accumulation of static electricity is reduced, the static electricity can be effectively discharged, and the risks of static electricity accumulation and discharge are reduced.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The preparation method of the modified asphalt mixture is characterized by comprising the following steps:
firstly, preparing raw materials, namely preparing required materials including asphalt, aggregate, filler and additives, and stirring and mixing the materials to obtain a modified asphalt mixture;
in preparation, the bitumen is heated to a suitable temperature to bring it into a fluid state, typically in the temperature range 120-160 ℃;
pretreating the filler, namely pretreating the aggregate and the filler, namely cleaning and screening to ensure that the quality and the physicochemical properties of the aggregate meet the requirements, mixing the pretreated aggregate with asphalt mixed with the additive to ensure complete wetting of the aggregate, and controlling the quality of the mixture, wherein the quality comprises detection and adjustment of temperature, density, viscosity and oil content;
the filler comprises fly ash, mineral powder, an antistatic agent and a functional modifier, and the additive comprises a thickening agent and a wetting agent;
dry preparation, namely uniformly dispersing an antistatic agent and a functional modifier into the whole mixture by stirring after mixing aggregate and asphalt;
adding the solution, dissolving the antistatic agent and the functional modifier in a proper amount of solvent, adding the solution into the asphalt mixture, and stirring or mixing to uniformly disperse the asphalt mixture.
2. The method for preparing the modified asphalt mixture according to claim 1, wherein the method comprises the following steps: the antistatic agent includes graphite, metal powder and conductive fibers.
3. The method for preparing a modified asphalt mixture according to claim 2, wherein: the metal powder is any one or more of copper powder and aluminum powder, and the conductive fiber is a common conductive material such as carbon fiber or metal fiber.
4. The method for preparing the modified asphalt mixture according to claim 1, wherein the method comprises the following steps: the functional modifier comprises a binder, a cracking inhibitor, a water loss resistant agent, an anti-pulverization agent and an anti-rutting agent, wherein the binder is used for improving the adhesiveness of components in the mixture and promoting the combination of aggregate and asphalt, the cracking inhibitor is used for reducing cracks and damages generated by the mixture at low temperature, the water loss resistant agent is used for reducing the water sensitivity of the mixture and preventing the influence of moisture on the performance of the mixture, the anti-pulverization agent is used for preventing the pulverization phenomenon on the surface of asphalt and increasing the durability of a pavement, and the anti-rutting agent is used for improving the bearing capacity and the anti-deformation performance of the mixture and preventing the formation of ruts and indentations.
5. The method for preparing the modified asphalt mixture according to claim 1, wherein the method comprises the following steps: the time required for uniformly mixing the asphalt and the aggregate is 10-20 minutes.
6. The method for preparing the modified asphalt mixture according to claim 1, wherein the method comprises the following steps: the antistatic agent, the functional modifier and the asphalt mixture are uniformly mixed in the dry preparation for 10-20 minutes.
7. The method for preparing the modified asphalt mixture according to claim 1, wherein the method comprises the following steps: the antistatic agent and the functional modifier are added into the solution, dissolved and then uniformly mixed with the asphalt mixture for 2-5 minutes.
8. The method for preparing the modified asphalt mixture according to claim 1, wherein the method comprises the following steps: the mixing rate of the asphalt and the aggregate is 400-600r/min, and the mixing temperature is 130-160 ℃.
9. The method for preparing the modified asphalt mixture according to claim 1, wherein the method comprises the following steps: 4-6 parts of graphite, 5-15 parts of metal powder and 3-8 parts of conductive fibers, 3-5 parts of binder, 5-15 parts of cracking inhibitor, 4-9 parts of water loss resistant agent, 5-8 parts of anti-pulverization agent and 3-6 parts of anti-rutting agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311500062.4A CN117645433A (en) | 2023-11-13 | 2023-11-13 | Preparation method of modified asphalt mixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311500062.4A CN117645433A (en) | 2023-11-13 | 2023-11-13 | Preparation method of modified asphalt mixture |
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| Publication Number | Publication Date |
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| CN117645433A true CN117645433A (en) | 2024-03-05 |
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| CN202311500062.4A Pending CN117645433A (en) | 2023-11-13 | 2023-11-13 | Preparation method of modified asphalt mixture |
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| Country | Link |
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| CN (1) | CN117645433A (en) |
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- 2023-11-13 CN CN202311500062.4A patent/CN117645433A/en active Pending
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