CN111778812A - Production method of high-strength wear-resistant regenerated SMA asphalt mixture - Google Patents
Production method of high-strength wear-resistant regenerated SMA asphalt mixture Download PDFInfo
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- CN111778812A CN111778812A CN202010625454.3A CN202010625454A CN111778812A CN 111778812 A CN111778812 A CN 111778812A CN 202010625454 A CN202010625454 A CN 202010625454A CN 111778812 A CN111778812 A CN 111778812A
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- asphalt
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1004—Reconditioning or reprocessing bituminous mixtures, e.g. salvaged paving, fresh patching mixtures grown unserviceable; Recycling salvaged bituminous mixtures; Apparatus for the in-plant recycling thereof
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/08—Apparatus for transporting and heating or melting asphalt, bitumen, tar, or the like
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
- E01C19/104—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers
- E01C19/1045—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers the mixture being discharged continuously
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a production method of a high-strength wear-resistant regenerated SMA asphalt mixture, which comprises the following steps: preparing raw materials, performing regeneration treatment on old asphalt, performing pretreatment on regenerated broken aggregates, preparing asphalt mastic, preparing a regenerated SMA asphalt mixture and canning a finished product; the recycled SMA asphalt mixture is prepared by adopting recycled old asphalt and recycled aggregate as raw materials, so that the production cost is reduced, the recycled aggregate is crushed into coarse aggregate and fine aggregate, the raw materials in the SMA asphalt mixture are connected more tightly, the friction coefficient of the SMA asphalt mixture is increased to a certain extent by the roughness and the edges and corners of the surface, the produced SMA asphalt mixture has good toughness and good vibration damping effect by adding rubber powder and an anti-stripping agent in the production process, the reduction of hardness of the SMA asphalt mixture when the SMA asphalt mixture is paved into a road surface and is heated is inhibited by adding carbon black in the production process, and the fatigue resistance and the wear resistance of the SMA asphalt mixture are also increased.
Description
Technical Field
The invention relates to the technical field of asphalt mixture production and processing, in particular to a production method of a high-strength wear-resistant regenerated SMA asphalt mixture.
Background
The asphalt mixture is generally prepared by mixing mineral aggregates with different particle sizes, mineral powder and reclaimed materials under strictly controlled conditions according to the optimal grading principle, and is uniformly mixed with a proper asphalt material to form a mixture called as the asphalt mixture, wherein the SMA asphalt mixture refers to a compact asphalt mixture formed by filling asphalt mastic consisting of asphalt, mineral powder, a fiber stabilizer and fine aggregates into a framework gap of discontinuous-graded coarse aggregates, and is mainly used for paving an SMA (styrene-maleic anhydride) pavement, and the SMA asphalt mixture is widely applied to roads, bicycle lanes, sidewalks, bus lines, walking areas and squares at home and abroad due to excellent anti-rutting performance and anti-sliding performance at present;
the existing production method of the SMA asphalt mixture is complex in operation, complex in process and high in production cost, the produced SMA asphalt mixture is too high in hardness, does not have good toughness and good vibration reduction effect, so that the produced SMA asphalt mixture is easy to crack and deform after being used for a long time, and is low in service life.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a production method of a high-strength wear-resistant regenerated SMA asphalt mixture, which adds rubber powder and an anti-stripping agent in the mixing and stirring process, thereby not only increasing the toughness of the SMA asphalt mixture and enabling the SMA asphalt mixture to have soft texture and play a role in vibration reduction, but also increasing the caking property among raw materials so as to ensure that the SMA asphalt mixture is not easy to deform and crack after long-time use.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: a production method of a high-strength wear-resistant regenerated SMA asphalt mixture comprises the following steps:
the method comprises the following steps: preparing the raw materials
Preparing new asphalt with specified components according to production needs for later use, intensively crushing the dug waste old asphalt pavement to obtain old asphalt crushed aggregates, preparing regenerated aggregates with specified components according to production needs, cleaning the old asphalt crushed aggregates and the regenerated aggregates, air-drying the old asphalt crushed aggregates and the regenerated aggregates after cleaning, crushing the regenerated aggregates into particles with the particle size of less than 10mm, removing impurities and dust in the regenerated crushed aggregates after crushing, and finally obtaining purer regenerated crushed aggregates;
step two: regeneration treatment of old asphalt
According to the first step, firstly, putting the air-dried old asphalt fragments into a melting pool to melt the old asphalt fragments into a liquid asphalt mixture, then pouring the melted liquid asphalt mixture into a stirrer to stir and mix uniformly, then adding a regenerant to continue mixing and stirring, and finally discharging the liquid asphalt mixture into a storage tank and preserving heat for later use to obtain regenerated old asphalt;
step three: recycled crushed aggregate pretreatment
According to the first step, firstly, secondary cleaning is carried out on the regenerated broken aggregates after impurity removal and dust removal, the cleaned regenerated broken aggregates are sent to a drying box for heating and drying, then the dried regenerated broken aggregates are screened into coarse aggregates and fine aggregates by a screening machine, and then the coarse aggregates and the fine aggregates with specified components are respectively sent to different storage boxes for later use;
step four: preparation of asphalt mastic
According to the first step, firstly, pouring the new asphalt with the specified components into a stirrer, then heating and stirring the new asphalt through the stirrer, stopping heating and preserving heat when the new asphalt is heated to the specified temperature, then adding the mineral powder and the fine aggregate with the specified components into the stirrer for mixing and stirring, then adding the fiber stabilizer for mixing and stirring, and finally obtaining the mastic asphalt;
step five: preparation of recycled SMA asphalt mixture
Pouring the regenerated old asphalt in a storage tank into a stirrer according to specified components for heating and stirring, pouring coarse aggregates with specified components into the stirrer and the regenerated old asphalt through a storage tank after stirring for 5 minutes, mixing and stirring the coarse aggregates with the regenerated old asphalt, adding the asphalt mastic with the specified components after mixing and stirring for 10 minutes, continuously mixing and stirring, uniformly adding the rubber powder with the specified components and the anti-stripping agent for mixing and stirring after continuously mixing and stirring for 10 minutes, adding the carbon black with the specified components after stirring for mixing and stirring again, and stirring for 1 hour to obtain a regenerated SMA asphalt mixture;
step six: finished product canning
And fifthly, performing sampling inspection on the regenerated SMA asphalt mixture after the stirring of the regenerated SMA asphalt mixture is finished, filling the regenerated SMA asphalt mixture into a finished product tank after the sampling inspection is qualified to obtain a finished product of the SMA asphalt mixture, and finally transporting the finished product of the SMA asphalt mixture to a road surface to be paved through a transport vehicle to pave the SMA road surface.
The further improvement lies in that: in the first step, the waste asphalt pavement is intensively crushed by a hammer crusher, the waste asphalt crushed aggregates and the recycled aggregate are cleaned by a high-pressure cleaning machine, the cleaned waste asphalt crushed aggregates and the cleaned recycled aggregate are air-dried by an air dryer, and the recycled aggregate is crushed by a construction waste crusher.
The further improvement lies in that: in the first step, impurities in the recycled crushed aggregates are screened out through a screening machine, meanwhile, crushed particles with the particle size larger than 10mm in the recycled crushed aggregates are screened out and are crushed again through a construction waste crusher until the particle size is smaller than 10mm, and dust in the recycled crushed aggregates is sucked through a dust suction pump.
The further improvement lies in that: in the second step, the stirring temperature of the stirrer is set to be 150 ℃, the stirring time of the stirrer after the liquid asphalt mixture is added is 10 minutes, the stirring time of the stirrer after the regenerant is added is 10 minutes, and the component ratio of the liquid asphalt mixture to the regenerant is 10: 1.
The further improvement lies in that: and in the third step, the regenerated broken aggregates after impurity removal and dust removal are cleaned by a water flow type cleaning machine, the heating temperature in the drying box is set to be 75 ℃, the drying time is 1 hour, the regenerated broken aggregates with the particle size larger than 5mm are used as coarse aggregates, and the regenerated broken aggregates with the particle size smaller than 5mm are used as fine aggregates.
The further improvement lies in that: in the fourth step, the heating temperature of the stirrer is set to be 150 ℃, the stirring time is 30 minutes after the new asphalt is added, the heating is stopped when the temperature is 125 ℃, the stirring time is 10 minutes after the mineral powder and the fine aggregate are added, and the stirring time is 15 minutes after the fiber stabilizer is added, wherein the component ratio of the new asphalt to the mineral powder to the fine aggregate to the fiber stabilizer is 10:2:4: 1.
The further improvement lies in that: in the fifth step, the heating temperature in the stirrer is set to 145 ℃, wherein the component ratio of the regenerated old asphalt, the coarse aggregate, the asphalt mastic, the rubber powder, the anti-stripping agent and the carbon black is 10:5:8:2:1: 2.
The invention has the beneficial effects that: the invention adopts recycled old asphalt and recycled aggregate as raw materials to prepare the recycled SMA asphalt mixture, reduces the consumption of new asphalt and the cost of mining natural aggregate, thereby greatly reducing the production cost, the recycled aggregate is crushed into coarse aggregate and fine aggregate, and the recycled aggregate is coated with a certain amount of cement mortar, so that the surface of the recycled aggregate has weak negative charges and is rough and has edges and corners, so that the recycled aggregate is easier to reduce the surplus surface energy by adsorbing asphaltic acid and asphalt anhydride in the asphalt when contacting with the asphalt, and shows better adhesiveness, thereby leading the connection of the raw materials in the SMA asphalt mixture to be more compact, further increasing the strength, simultaneously increasing the friction coefficient of the SMA asphalt to a certain degree through the roughness and the edges and corners of the surface, thereby avoiding the SMA from slipping, and leading the produced SMA asphalt mixture to have good toughness and good vibration damping effect by adding rubber powder and anti-stripping agent in the production process The production method has the advantages that the problem that the SMA asphalt mixture is easy to crack and deform after being used for a long time is avoided, the service life of the SMA asphalt mixture is prolonged to a certain extent, the reduction of hardness of the SMA asphalt mixture paved into a pavement is inhibited by adding carbon black in the production process, the fatigue resistance and the wear resistance of the SMA asphalt mixture are improved, in addition, the production method is simple to operate, the process is scientific, precise and clear, and the method is worthy of wide popularization.
Drawings
FIG. 1 is a production flow diagram of the present invention.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
According to the figure 1, the embodiment provides a production method of a high-strength wear-resistant recycled SMA asphalt mixture, which comprises the following steps:
the method comprises the following steps: preparing the raw materials
Preparing new asphalt with specified components according to production needs for later use, intensively crushing the dug waste old asphalt pavement by a hammer crusher to obtain old asphalt crushed aggregates, preparing regenerated aggregates with specified components according to production needs, cleaning the old asphalt crushed aggregates and the regenerated aggregates by a high-pressure cleaning machine, drying the old asphalt crushed aggregates and the regenerated aggregates by an air dryer after cleaning, crushing the regenerated aggregates into particles with the particle diameter of less than 10mm by a construction waste crusher, removing impurities and dust in the regenerated crushed aggregates by a screening machine and a dust suction pump after crushing, and finally obtaining purer regenerated crushed aggregates;
step two: regeneration treatment of old asphalt
According to the first step, firstly, putting the air-dried old asphalt fragments into a melting pool to melt the old asphalt fragments into a liquid asphalt mixture, then pouring the melted liquid asphalt mixture into a stirrer to stir and mix uniformly, setting the stirring temperature at 150 ℃, adding a regenerant to stir for 10 minutes, continuously mixing and stirring, discharging the liquid asphalt mixture into a storage tank after stirring for 10 minutes again, and preserving heat for later use to obtain regenerated old asphalt, wherein the component ratio of the liquid asphalt mixture to the regenerant is 10: 1;
step three: recycled crushed aggregate pretreatment
According to the first step, firstly, secondarily cleaning the regenerated broken aggregates after impurity removal and dust removal through a water flow type cleaning machine, sending the cleaned regenerated broken aggregates into a drying box for heating and drying for 1 hour, setting the heating temperature to be 75 ℃, then screening the dried regenerated broken aggregates into coarse aggregates and fine aggregates through a screening machine, wherein the coarse aggregates with the particle size larger than 5mm are used as the coarse aggregates, and the fine aggregates with the particle size smaller than 5mm are used as the fine aggregates, and then respectively sending the coarse aggregates and the fine aggregates with specified components into different storage boxes for later use;
step four: preparation of asphalt mastic
According to the first step, firstly, pouring new asphalt with specified components into a stirrer, then heating and stirring the new asphalt for 30 minutes by the stirrer, setting the heating temperature to be 150 ℃, stopping heating and preserving heat when the new asphalt is heated to 125 ℃, then adding mineral powder and fine aggregate with specified components into the stirrer for mixing and stirring, continuing stirring for 10 minutes, then adding a fiber stabilizer for mixing and stirring, and then stirring for 15 minutes to obtain asphalt mastic, wherein the component ratio of the new asphalt, the mineral powder, the fine aggregate and the fiber stabilizer is 10:2:4: 1;
step five: preparation of recycled SMA asphalt mixture
Pouring the regenerated old asphalt in a storage tank into a stirrer according to specified components for heating and stirring, setting the heating temperature to 145 ℃, pouring the coarse aggregate of the specified components into the stirrer and the regenerated old asphalt for mixing and stirring after stirring for 5 minutes, adding the asphalt mastic of the specified components for continuously mixing and stirring after mixing and stirring for 10 minutes, uniformly adding the rubber powder of the specified components and the anti-stripping agent for mixing and stirring after continuously mixing and stirring for 10 minutes, adding the carbon black of the specified components for mixing and stirring after stirring for 10 minutes again, and stirring for 1 hour to obtain a regenerated SMA asphalt mixture, wherein the component ratio of the regenerated old asphalt, the coarse aggregate, the asphalt mastic, the rubber powder, the anti-stripping agent and the carbon black is 10:5:8:2:1: 2;
step six: finished product canning
And fifthly, performing sampling inspection on the regenerated SMA asphalt mixture after the stirring of the regenerated SMA asphalt mixture is finished, filling the regenerated SMA asphalt mixture into a finished product tank after the sampling inspection is qualified to obtain a finished product of the SMA asphalt mixture, and finally transporting the finished product of the SMA asphalt mixture to a road surface to be paved through a transport vehicle to pave the SMA road surface.
The production method of the high-strength wear-resistant recycled SMA asphalt mixture adopts recycled old asphalt and recycled aggregate as raw materials to prepare the recycled SMA asphalt mixture, reduces the consumption of new asphalt and the cost for exploiting natural aggregate, thereby greatly reducing the production cost, the recycled aggregate is crushed into coarse aggregate and fine aggregate, and the surface of the recycled aggregate is wrapped with a certain amount of cement mortar, so that the surface of the recycled aggregate has weak negative charges and is rough and angular, the recycled aggregate is easier to adsorb asphaltic acid and asphaltic anhydride in the asphalt when contacting the asphalt, the surplus surface energy of the recycled aggregate is reduced, better adhesion is shown, thereby leading the connection of the raw materials in the SMA asphalt mixture to be more compact, further increasing the strength of the SMA asphalt mixture, simultaneously increasing the friction coefficient of the SMA asphalt mixture to a certain degree through the roughness and the angular of the surface, thereby avoiding the SMA from slipping, the rubber powder and the anti-stripping agent are added in the production process, so that the produced SMA asphalt mixture has good toughness and good vibration reduction effect, the phenomenon that the SMA asphalt mixture is easy to crack and deform after being used for a long time is avoided, the service life of the SMA asphalt mixture is prolonged to a certain extent, the reduction of hardness of the SMA asphalt mixture after being paved into a road surface during temperature rise is inhibited by adding the carbon black in the production process, and the fatigue resistance and the wear resistance of the SMA asphalt mixture are also improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A production method of a high-strength wear-resistant regenerated SMA asphalt mixture is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparing the raw materials
Preparing new asphalt with specified components according to production needs for later use, intensively crushing the dug waste old asphalt pavement to obtain old asphalt crushed aggregates, preparing regenerated aggregates with specified components according to production needs, cleaning the old asphalt crushed aggregates and the regenerated aggregates, air-drying the old asphalt crushed aggregates and the regenerated aggregates after cleaning, crushing the regenerated aggregates into particles with the particle size of less than 10mm, removing impurities and dust in the regenerated crushed aggregates after crushing, and finally obtaining purer regenerated crushed aggregates;
step two: regeneration treatment of old asphalt
According to the first step, firstly, putting the air-dried old asphalt fragments into a melting pool to melt the old asphalt fragments into a liquid asphalt mixture, then pouring the melted liquid asphalt mixture into a stirrer to stir and mix uniformly, then adding a regenerant to continue mixing and stirring, and finally discharging the liquid asphalt mixture into a storage tank and preserving heat for later use to obtain regenerated old asphalt;
step three: recycled crushed aggregate pretreatment
According to the first step, firstly, secondary cleaning is carried out on the regenerated broken aggregates after impurity removal and dust removal, the cleaned regenerated broken aggregates are sent to a drying box for heating and drying, then the dried regenerated broken aggregates are screened into coarse aggregates and fine aggregates by a screening machine, and then the coarse aggregates and the fine aggregates with specified components are respectively sent to different storage boxes for later use;
step four: preparation of asphalt mastic
According to the first step, firstly, pouring the new asphalt with the specified components into a stirrer, then heating and stirring the new asphalt through the stirrer, stopping heating and preserving heat when the new asphalt is heated to the specified temperature, then adding the mineral powder and the fine aggregate with the specified components into the stirrer for mixing and stirring, then adding the fiber stabilizer for mixing and stirring, and finally obtaining the mastic asphalt;
step five: preparation of recycled SMA asphalt mixture
Pouring the regenerated old asphalt in a storage tank into a stirrer according to specified components for heating and stirring, pouring coarse aggregates with specified components into the stirrer and the regenerated old asphalt through a storage tank after stirring for 5 minutes, mixing and stirring the coarse aggregates with the regenerated old asphalt, adding the asphalt mastic with the specified components after mixing and stirring for 10 minutes, continuously mixing and stirring, uniformly adding the rubber powder with the specified components and the anti-stripping agent for mixing and stirring after continuously mixing and stirring for 10 minutes, adding the carbon black with the specified components after stirring for mixing and stirring again, and stirring for 1 hour to obtain a regenerated SMA asphalt mixture;
step six: finished product canning
And fifthly, performing sampling inspection on the regenerated SMA asphalt mixture after the stirring of the regenerated SMA asphalt mixture is finished, filling the regenerated SMA asphalt mixture into a finished product tank after the sampling inspection is qualified to obtain a finished product of the SMA asphalt mixture, and finally transporting the finished product of the SMA asphalt mixture to a road surface to be paved through a transport vehicle to pave the SMA road surface.
2. The production method of the high-strength wear-resistant recycled SMA asphalt mixture according to claim 1, which is characterized in that: in the first step, the waste asphalt pavement is intensively crushed by a hammer crusher, the waste asphalt crushed aggregates and the recycled aggregate are cleaned by a high-pressure cleaning machine, the cleaned waste asphalt crushed aggregates and the cleaned recycled aggregate are air-dried by an air dryer, and the recycled aggregate is crushed by a construction waste crusher.
3. The production method of the high-strength wear-resistant recycled SMA asphalt mixture according to claim 2, characterized by comprising the following steps: in the first step, impurities in the recycled crushed aggregates are screened out through a screening machine, meanwhile, crushed particles with the particle size larger than 10mm in the recycled crushed aggregates are screened out and are crushed again through a construction waste crusher until the particle size is smaller than 10mm, and dust in the recycled crushed aggregates is sucked through a dust suction pump.
4. The production method of the high-strength wear-resistant recycled SMA asphalt mixture according to claim 1, which is characterized in that: in the second step, the stirring temperature of the stirrer is set to be 150 ℃, the stirring time of the stirrer after the liquid asphalt mixture is added is 10 minutes, the stirring time of the stirrer after the regenerant is added is 10 minutes, and the component ratio of the liquid asphalt mixture to the regenerant is 10: 1.
5. The production method of the high-strength wear-resistant recycled SMA asphalt mixture according to claim 1, which is characterized in that: and in the third step, the regenerated broken aggregates after impurity removal and dust removal are cleaned by a water flow type cleaning machine, the heating temperature in the drying box is set to be 75 ℃, the drying time is 1 hour, the regenerated broken aggregates with the particle size larger than 5mm are used as coarse aggregates, and the regenerated broken aggregates with the particle size smaller than 5mm are used as fine aggregates.
6. The production method of the high-strength wear-resistant recycled SMA asphalt mixture according to claim 1, which is characterized in that: in the fourth step, the heating temperature of the stirrer is set to be 150 ℃, the stirring time is 30 minutes after the new asphalt is added, the heating is stopped when the temperature is 125 ℃, the stirring time is 10 minutes after the mineral powder and the fine aggregate are added, and the stirring time is 15 minutes after the fiber stabilizer is added, wherein the component ratio of the new asphalt to the mineral powder to the fine aggregate to the fiber stabilizer is 10:2:4: 1.
7. The production method of the high-strength wear-resistant recycled SMA asphalt mixture according to claim 1, which is characterized in that: in the fifth step, the heating temperature in the stirrer is set to 145 ℃, wherein the component ratio of the regenerated old asphalt, the coarse aggregate, the asphalt mastic, the rubber powder, the anti-stripping agent and the carbon black is 10:5:8:2:1: 2.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666668A (en) * | 2021-09-18 | 2021-11-19 | 乐清市建瓴沥青混凝土有限公司 | Recycled asphalt concrete and preparation method thereof |
| CN114525707A (en) * | 2021-12-31 | 2022-05-24 | 同路达(上海)生态科技有限公司 | Composite pavement structure based on high-performance ecological macroporous concrete material |
-
2020
- 2020-07-02 CN CN202010625454.3A patent/CN111778812A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666668A (en) * | 2021-09-18 | 2021-11-19 | 乐清市建瓴沥青混凝土有限公司 | Recycled asphalt concrete and preparation method thereof |
| CN114525707A (en) * | 2021-12-31 | 2022-05-24 | 同路达(上海)生态科技有限公司 | Composite pavement structure based on high-performance ecological macroporous concrete material |
| CN114525707B (en) * | 2021-12-31 | 2024-02-02 | 同路达(上海)生态科技有限公司 | Composite pavement structure based on high-performance ecological macroporous concrete material |
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