CN116063022B - Asphalt concrete externally doped anti-rutting agent with shell-core structure and preparation method thereof - Google Patents
Asphalt concrete externally doped anti-rutting agent with shell-core structure and preparation method thereof Download PDFInfo
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- CN116063022B CN116063022B CN202211738832.4A CN202211738832A CN116063022B CN 116063022 B CN116063022 B CN 116063022B CN 202211738832 A CN202211738832 A CN 202211738832A CN 116063022 B CN116063022 B CN 116063022B
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- 238000001035 drying Methods 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 25
- 238000005507 spraying Methods 0.000 claims description 25
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 24
- 239000002699 waste material Substances 0.000 claims description 22
- 230000007480 spreading Effects 0.000 claims description 19
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
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- 238000000034 method Methods 0.000 claims description 9
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- 239000002893 slag Substances 0.000 claims description 8
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- 239000000126 substance Substances 0.000 claims description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 239000002283 diesel fuel Substances 0.000 claims description 5
- 239000003502 gasoline Substances 0.000 claims description 5
- 239000003350 kerosene Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
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- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- OEKDNFRQVZLFBZ-UHFFFAOYSA-K scandium fluoride Chemical compound F[Sc](F)F OEKDNFRQVZLFBZ-UHFFFAOYSA-K 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 12
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- 229920013716 polyethylene resin Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 6
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- 230000007704 transition Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000009776 industrial production Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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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
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an anti-rutting agent for shell-core structure asphalt concrete and a preparation method thereof. The rut resistant agent structure comprises an inner core structure, a wrapping structure, an inner shell structure, a middle shell structure and an outer shell structure. The synergistic effect among the structural layers can lead the rut resistant agent to truly exert the beneficial effects of embedding, reinforcing, cementing and deformation recovery. In addition, the addition of the functional powder in the rut resistant agent is also beneficial to water evaporation in summer and ice melting in winter and reduces the occurrence of pavement thermal shrinkage cracks. Meanwhile, the rut resistant agent can also realize the effective utilization of different types of solid wastes, and has strong environmental protection benefit.
Description
Technical Field
The invention belongs to the technical field of road asphalt materials, and particularly relates to an asphalt concrete externally-doped anti-rutting agent with a shell-core structure and a preparation method thereof.
Background
At present, the application of the method for coping with rut diseases is to add anti-rut agents. The anti-rut agent is a modified additive which aims at preventing rut diseases of asphalt pavement and is usually added into asphalt mixture in a doping way. The ideal rut resistant agent can greatly reduce the occurrence of rut diseases through the synergistic effect of embedding, reinforcing, cementing and deformation recovery. The main component of the anti-rut agent products widely used at home and abroad at present is polyolefin resin, and the main component is waste polyolefin resin, and the uncertainty of the source of the waste resin leads to the difficulty in controlling the quality of the anti-rut agent, and in fact, most anti-rut agents are difficult to realize the beneficial effects. Therefore, the development of anti-rut agents truly combining the functions of embedding, reinforcement, cementing and deformation recovery is necessary.
At present, the control index of domestic anti-rutting agent products is mainly reflected on the melt index and ash content. Both national and industry standards place demands on the lower limit of melt index, thereby rendering resins with lower melt indices unusable for the production of anti-rutting agents. At present, the problem of white pollution caused by waste plastics is increasingly serious, and a plurality of waste plastics can be repeatedly reused, so that the melt index is very low, and how to consume the solid wastes in the traffic field and realize high-added-value utilization is very important.
Moreover, with the development of industrial production, the amount of industrial waste is increasing, and especially the industrial discharge of metallurgy, thermal power generation and the like is maximized. The industrial waste has huge quantity, various kinds, complex components and quite difficult treatment. Today only a limited number of industrial waste is utilized, other industrial waste still being mainly deposited negatively. The passive stockpiling of industrial wastes not only occupies a large amount of land and causes waste of manpower and material resources, but also causes pollution to water and soil. Generally, industrial waste can be used as industrial raw materials or energy sources after being treated by proper processes, and the industrial waste is easier to be recycled than waste water and waste gas. In practice, almost all industrial waste can be processed into building materials or energy and industrial materials can be recovered therefrom. How to realize the positive absorption of solid waste in the traffic field, the realization of the best use of things and the change of waste into valuable are important.
How to develop an anti-rut agent which can fully exert the effects of embedding, reinforcement, cementing and deformation recovery, is beneficial to water evaporation in summer and ice melting in winter and reduces the occurrence of thermal shrinkage cracks of the pavement, and simultaneously can absorb different types of solid wastes as much as possible is a technical problem to be solved.
Disclosure of Invention
In order to solve the technical problems, the invention provides an asphalt concrete externally-doped anti-rutting agent with a shell-core structure and a preparation method thereof. The anti-rutting agent is prepared from different structural layers, and the synergistic effect of the structural layers is beneficial to truly playing the beneficial effects of embedding, reinforcing, cementing and deformation recovery of the anti-rutting agent, so that the prepared asphalt concrete has excellent comprehensive performance and is not easy to generate the technical problems of segregation and poor stability. Moreover, the rut resistant agent also has the functions of self-heating and reverse thermal expansion when meeting water, thereby being beneficial to the technical characteristics of water evaporation in summer, ice melting and snow melting in winter and reducing the occurrence of thermal shrinkage cracks. In addition, the anti-rut agent can realize the absorption of different types of solid wastes, and has extremely strong environmental protection benefit.
The invention relates to a shell-core structure asphalt concrete externally doped anti-rutting agent, which comprises the following components: the inner core structure, the parcel structure, the inner shell structure, well shell structure and shell structure.
The inner core structure is waste resin or industrial solid waste. The melt index of the waste resin at 190 ℃ is less than 2g/10min, and the particle size is 1-5mm. The industrial solid waste is one or more of gangue, blast furnace slag, steel slag, nonferrous metal slag and carbide slag, the grain size is 1-5mm, and the compressive strength is more than 500kPa.
The wrapping structure is made of emulsified asphalt or liquid asphalt. The inner shell structure is made of low grade hard asphalt. The middle shell structure is made of petroleum resin. The shell structure is made of one or more of EVA resin, modified acrylic resin and chloroprene rubber. The melt index of the shell structure material is more than 1.5g/10min at 160 ℃.
The preparation method of the shell-core structure asphalt concrete externally doped anti-rutting agent comprises the following steps:
a. drying and dehydrating the inner core structure, spreading the inner core structure on a vibrating bed, coating emulsified asphalt or liquid asphalt on the surface of the inner core structure, coating the inner core structure under vibration operation, and intermittently spreading fine iron powder on the surface of the inner core structure to obtain a structure 1 after drying and hardening;
b. heating low-grade hard asphalt into a flowing state, dispersing the flowing state in one or more solvents selected from trichloroethylene, toluene, xylene, gasoline, kerosene and diesel oil to form a liquid solution of the hard asphalt, coating the liquid solution on the surface of the structure 1 by using a spraying device under vibration operation, intermittently spreading negative thermal expansion substances on the surface of particles, and drying and hardening to obtain the structure 2;
c. heating one or more solvents selected from toluene, xylene, gasoline, kerosene and diesel oil to dissolve petroleum resin or rosin resin into liquid state, spraying the liquid state on the surface of the structure 2 by using a spraying device under vibration operation, then intermittently spreading iron powder on the surface, and drying and hardening to obtain the structure 3;
d. one or more solvents selected from toluene, xylene and chloroform are used for heating and dissolving one or more of EVA resin, modified acrylic resin and chloroprene rubber to be liquid, the liquid is coated on the structure 3 by a spraying device, and the asphalt concrete externally doped anti-rutting agent with a shell-core structure is obtained after drying and hardening treatment.
The thickness of the inner shell structure, the thickness of the outer shell structure and the thickness of the outer shell structure need to be more than 70% of the thickness of the wrapping structure, the thickness of the inner shell structure, the thickness of the middle shell structure and the thickness of the outer shell structure. When the inner core structure is waste resin, the thickness of the wrapping structure, the inner shell structure, the middle shell structure and the outer shell structure accounts for 30-50% of the particle size of the whole anti-rutting agent. When the inner core structure is industrial solid waste, the thickness of the wrapping structure, the inner shell structure, the middle shell structure and the outer shell structure accounts for 50-80% of the particle size of the whole anti-rutting agent.
In the step a, when the core structure is industrial solid waste, firstly spraying an epoxy resin coating which can be solidified in air on the surface of the core structure after drying and dehydration, and continuously vibrating the core structure on a vibrating bed which takes polytetrafluoroethylene as a working surface and has a micropore structure, so that redundant epoxy resin solution flows away and bonding among particles is avoided, and after solidification, the core structure can be subjected to subsequent treatment.
The negative thermal expansion substance is one or more of antimony, bismuth, gallium, copper and scandium fluoride.
By means of the technical scheme, the invention has the following beneficial effects:
the conventional anti-rut agent is generally formed of a polyolefin resin by screw extrusion equipment, and has the following disadvantages: the anti-rut agent is difficult to uniformly and stably prepare, resin materials with lower melting fingers cannot be absorbed, the performance is improved singly, and the comprehensive improvement of embedding, reinforcement, cementing and deformation recovery effects cannot be realized. Most of the traditional anti-rutting agents are difficult to generate 'wiredrawing' in the process of mixing with aggregate, and can not realize reinforcement and adhesion with the aggregate, so that the anti-rutting agents are extremely easy to segregate and deposit at the bottom of the mixture, and only play a role of caulking.
The anti-rut agent breaks through the defect of single improvement effect of the traditional anti-rut agent, and can cooperatively exert the effects of embedding, reinforcement, cementing and deformation recovery, thereby realizing the maximum improvement and stable performance of asphalt concrete. The inner core structure layer has higher strength and is a contribution layer for playing the role of embedding and extrusion; the wrapping structure is used as a transition layer between the inner core structure and the inner shell structure, and wrapping of the inner core structure can be realized, so that harmful substances in the inner core structure layer are prevented from escaping; the inner shell structure can play a role in tackifying, and is a contribution layer for playing a role in cementing; the middle shell structure is used as a transition layer between the inner shell and the outer shell structure and contributes to cementing and deformation recovery effects; the excellent viscoelastic properties of the shell structure are the primary generating layer for the stiffening action and also contribute to the cementing and deformation recovery action. The anti-rut agent has definite function of each functional layer, and the structure ensures that the beneficial effects of each structural layer can be exerted layer by layer.
The prepared rut resistant agent with the shell-core structure can cooperatively generate the effects of embedding, reinforcement, cementing and deformation recovery in use, so that the comprehensive performance of asphalt concrete is improved to the greatest extent, and the technical problem that the conventional rut resistant agent is easy to separate and deposit at the bottom to cause the pavement to be easy to separate and push is solved. In addition, in order to avoid the problem of particle adhesion in the wrapping process of each structural layer, the invention solves the problem by adding powder through vibration and spreading in the preparation process, and different powder has functional characteristics besides the anti-adhesion effect. The iron powder can form a primary cell when meeting water in the air to generate exothermic reaction, so that the iron powder is beneficial to water evaporation in summer and ice and snow melting in winter; the addition of the anti-thermal expansion substance helps to resist the change of thermal expansion and contraction of other substances, thereby being beneficial to reducing the occurrence of thermal contraction cracks. The functional powder is added in a form of taking the anti-rut agent as a carrier, so that the technical difficulties of easy agglomeration and difficult dispersion of the powder in concentrated addition can be avoided. In addition, the anti-rut agent can exert various improving effects, especially the reinforcing and the adhesion with stone, and can greatly reduce the data dispersion problem caused by uneven dispersion of the anti-rut agent in the asphalt mixture testing and paving process.
Moreover, the anti-rutting agent disclosed by the invention can be used for dissolving resin and industrial solid waste which cannot be used by the traditional anti-rutting agent, and the solid waste can have a performance improving effect in asphalt concrete, so that the beneficial effect of changing waste into valuable is truly realized, and the anti-rutting agent prepared by the invention has very strong environmental protection benefit.
The following describes the invention in further detail with reference to examples, which are provided to illustrate the invention and are not intended to limit the scope of the invention. Various changes and modifications to the present invention will become apparent to those skilled in the art and the generic principles herein may be applied to other embodiments without the use of inventive faculty, and the equivalents thereof fall within the scope of the invention as defined in the claims appended hereto.
Drawings
FIG. 1 is a schematic structural diagram of an exterior doped rut resistant agent for asphalt concrete with a core-shell structure according to the present invention.
Detailed Description
The invention is further described below with reference to examples:
example 1
Taking waste polyethylene resin with the particle size of 3mm and the melting index value of 190 ℃ of 1.2g/10min as a material, taking the waste polyethylene resin as an inner core structure, then drying and dehydrating, spreading the waste polyethylene resin on a vibrating bed with a microporous structure and with polytetrafluoroethylene as a working interface after drying, coating liquid asphalt on the surface of the waste polyethylene resin by using spraying equipment, spreading iron powder on the surface while coating the waste polyethylene resin, and then drying and hardening. Heating 30# hard asphalt into a flowing state, adding gasoline to prepare a liquid solution of the hard asphalt, coating the liquid solution on the surface of a dried liquid asphalt structure by using a spraying device, intermittently spreading bismuth powder, and continuously performing drying and hardening treatment. And (3) dissolving petroleum resin in xylene in a heating state, dispersing the petroleum resin into a liquid state, spraying the petroleum resin on the surface of the dried hard asphalt by using a spraying device, and intermittently spreading iron powder on the surface. Finally, dissolving EVA resin in toluene under a heating state, dispersing into liquid state, coating the EVA resin on the surface of the petroleum resin layer by using a spraying device, and drying and hardening the EVA resin to make the EVA resin be wrapped on the outer layer, thereby preparing the asphalt concrete externally doped anti-rutting agent 1 with a shell-core structure.
Example 2
Taking waste polyolefin resin with the particle size of 4mm and the melting index value of 0.5g/10min at 190 ℃ as a material, taking the waste polyolefin resin as an inner core structure, drying and dehydrating, spreading the waste polyolefin resin on a vibrating bed with a microporous structure and with polytetrafluoroethylene as a working interface after drying, coating liquid asphalt on the surface of the waste polyethylene resin by using spraying equipment, coating the waste polyethylene resin while spreading iron powder on the surface, and drying and hardening. Heating 10# hard asphalt into a flowing state, adding kerosene to prepare a liquid solution of the hard asphalt, coating the liquid solution on the surface of a dried liquid asphalt structure by using a spraying device, intermittently spreading antimony powder, and continuing drying and hardening treatment. And (3) dissolving petroleum resin in toluene in a heating state, dispersing the petroleum resin into a liquid state, spraying the petroleum resin on the dried hard asphalt surface by using a spraying device, and intermittently spreading iron powder on the surface. Finally, the EVA resin is dissolved and dispersed into liquid state by chloroform under the heating state, the EVA resin is coated on the surface of the petroleum resin layer by a spraying device, and the EVA resin is coated on the outer layer by drying and hardening treatment, so that the asphalt concrete externally doped anti-rutting agent 2 with a shell-core structure is prepared.
Example 3
Firstly, crushing coal gangue into particles with the particle size of 3mm, drying and dehydrating the particles, then placing the particles on a vibrating bed which has a micropore structure and takes polytetrafluoroethylene as a working interface, and spraying aqueous epoxy resin solution on the surfaces of the particles in a vibrating state to form the package of the coal gangue. After the epoxy resin is solidified, the liquid asphalt is coated on the surface of the structure of the epoxy resin-coated gangue by using spraying equipment in a vibration state, the surface is coated with iron powder while the epoxy resin-coated gangue is coated, and then drying and hardening treatment is carried out. Heating 20# hard asphalt into a flowing state, adding diesel oil to prepare a liquid solution of the hard asphalt, coating the liquid solution on the surface of a dried liquid asphalt structure by using a spraying device, intermittently spreading copper powder, and continuing drying and hardening treatment. And (3) dissolving petroleum resin in xylene in a heating state, dispersing the petroleum resin into a liquid state, spraying the liquid state on the dried hard asphalt surface by using a spraying device, and intermittently spreading iron powder on the surface. Finally, the EVA resin is dissolved and dispersed into liquid state by adopting dimethylbenzene under the heating state, the EVA resin is coated on the surface of the petroleum resin layer by utilizing a spraying device, and the EVA resin is coated on the outer layer by drying and hardening treatment, so that the asphalt concrete externally doped anti-rutting agent 3 with a shell-core structure is prepared.
The three anti-rutting agents are respectively added into asphalt concrete with 70# asphalt as matrix asphalt, limestone as aggregate, grading type of AC-20 and oil-stone ratio of 4.4% in an externally doped form, the doping amount is 5 per mill of the mass of the mixture, and the dynamic stability is as shown in the following table.
TABLE 1 dynamic stability results
| Type(s) | Anti-rut agent 1 | Anti-rut agent 2 | Anti-rut agent 3 |
| Dynamic stability (times/mm) | 5487 | 5879 | 6245 |
Claims (7)
1. The preparation method of the asphalt concrete externally doped anti-rutting agent with the shell-core structure is characterized by comprising the following steps of: an inner core structure, a wrapping structure, an inner shell structure, a middle shell structure and an outer shell structure; the wrapping structure is made of emulsified asphalt or liquid asphalt; the inner shell structure is made of low-grade hard asphalt; the middle shell structure is made of petroleum resin; the shell structure is made of one or more of EVA resin, modified acrylic resin and chloroprene rubber;
the preparation method comprises the following specific steps:
a. drying and dehydrating the inner core structure, spreading the inner core structure on a vibrating bed, coating emulsified asphalt or liquid asphalt on the surface of the inner core structure, coating the inner core structure under vibration operation, and intermittently spreading fine iron powder on the surface of the inner core structure to obtain a structure 1 after drying and hardening;
b. heating low-grade hard asphalt into a flowing state, dispersing the flowing state in one or more solvents selected from trichloroethylene, toluene, xylene, gasoline, kerosene and diesel oil to form a liquid solution of the hard asphalt, coating the liquid solution on the surface of the structure 1 by using a spraying device under vibration operation, intermittently spreading negative thermal expansion substances on the surface of particles, and drying and hardening to obtain the structure 2;
c. heating and dissolving petroleum resin into liquid state by using one or more solvents selected from toluene, xylene, gasoline, kerosene and diesel oil, spraying the liquid state on the surface of the structure 2 by using a spraying device under the vibration operation, then intermittently spreading iron powder on the surface, and drying and hardening to obtain the structure 3;
d. one or more solvents selected from toluene, xylene and chloroform are used for heating and dissolving one or more of EVA resin, modified acrylic resin and chloroprene rubber to be liquid, the liquid is coated on the structure 3 by a spraying device, and the asphalt concrete externally doped anti-rutting agent with a shell-core structure is obtained after drying and hardening treatment.
2. The preparation method according to claim 1, wherein the core structure is waste resin or industrial solid waste, and the particle size is 1-5mm; the industrial solid waste is one or more of gangue, blast furnace slag, steel slag, nonferrous metal slag and carbide slag.
3. The preparation method according to claim 1, wherein in the step a, when the core structure is industrial solid waste, the surface of the core structure is sprayed with an epoxy resin coating which can be solidified in air after drying and dehydration, and the core structure is continuously vibrated on a vibrating bed which takes polytetrafluoroethylene as a working surface and has a micropore structure, so that the excessive epoxy resin solution flows away and the adhesion among particles is avoided, and the core structure can be subjected to subsequent treatment after solidification.
4. The method according to claim 1, wherein the negative thermal expansion substance is one or more of antimony, bismuth, gallium, copper, scandium fluoride.
5. The method of claim 1, wherein the thickness of the inner shell structure and the outer shell structure is greater than 70% of the thickness of the outer shell structure and the inner shell structure.
6. The method of claim 1, wherein when the core structure is waste resin, the thickness of the wrapping structure, the inner shell structure, the middle shell structure and the outer shell structure is 30-50% of the whole rut resistant particle size.
7. The method of claim 1, wherein when the core structure is industrial solid waste, the thickness of the wrapping structure + the inner shell structure + the middle shell structure + the outer shell structure is 50-80% of the whole rut resistant particle size.
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|---|---|---|---|---|
| CN101210086A (en) * | 2007-12-25 | 2008-07-02 | 武汉理工大学 | Asphalt concrete tracking-resisting modifier |
| CN107686579A (en) * | 2017-08-16 | 2018-02-13 | 江苏诺路桥工程检测有限公司 | A kind of anti-rut agent and preparation method thereof |
| CN109776917A (en) * | 2019-01-14 | 2019-05-21 | 山东大学 | A kind of Industrial Solid Waste powder is the enhanced high-strength asphalt anti-rut agent of multilayer of center core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210086A (en) * | 2007-12-25 | 2008-07-02 | 武汉理工大学 | Asphalt concrete tracking-resisting modifier |
| CN107686579A (en) * | 2017-08-16 | 2018-02-13 | 江苏诺路桥工程检测有限公司 | A kind of anti-rut agent and preparation method thereof |
| CN109776917A (en) * | 2019-01-14 | 2019-05-21 | 山东大学 | A kind of Industrial Solid Waste powder is the enhanced high-strength asphalt anti-rut agent of multilayer of center core |
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| 浅谈抗车辙剂作用机理研究进展;樊长昕;《山西交通科技》;20201031(第5期);第35-37页 * |
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