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CN111719384A - Road solid waste sorting and regenerating method - Google Patents

Road solid waste sorting and regenerating method Download PDF

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Publication number
CN111719384A
CN111719384A CN202010615115.7A CN202010615115A CN111719384A CN 111719384 A CN111719384 A CN 111719384A CN 202010615115 A CN202010615115 A CN 202010615115A CN 111719384 A CN111719384 A CN 111719384A
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CN
China
Prior art keywords
asphalt
sorting
stirring
waste
fine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010615115.7A
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Chinese (zh)
Inventor
范璐璐
刘忠
于芳
王志彬
陈学水
张鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Tianjian Asphalt Road Engineering Co ltd
Shenzhen Municipal Engineering Corp
Original Assignee
Shenzhen Tianjian Asphalt Road Engineering Co ltd
Shenzhen Municipal Engineering Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Tianjian Asphalt Road Engineering Co ltd, Shenzhen Municipal Engineering Corp filed Critical Shenzhen Tianjian Asphalt Road Engineering Co ltd
Priority to CN202010615115.7A priority Critical patent/CN111719384A/en
Publication of CN111719384A publication Critical patent/CN111719384A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02Machines, 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
    • E01C19/05Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Road Paving Machines (AREA)

Abstract

The invention relates to the technical field of asphalt regeneration, and discloses a method for sorting and regenerating road solid wastes, which comprises the following steps: 1) milling the asphalt pavement by using a cold milling machine, collecting milled asphalt waste materials, and transferring the asphalt waste materials into a sorting device after passing through a stripping structure; 2) the sorting device sorts the asphalt waste and moves the sorted fine-particle asphalt waste into the stirring device; through utilizing sorting unit, agitating unit, successively select separately the solid pitch waste material, obtain fine grain pitch waste material and coarse grain pitch waste material, then add the fine grain pitch waste material and the coarse grain pitch waste material of different ratios in the asphalt material, and agitating unit stirs the asphalt material simultaneously, the material of the asphalt material that has significantly reduced has strengthened the quality of the pitch stone that forms simultaneously, so the solid pitch waste material is selected separately through becoming more meticulous, adopts different processing method, reaches high-quality recycle.

Description

Road solid waste sorting and regenerating method
Technical Field
The invention relates to the technical field of asphalt regeneration, in particular to a method for sorting and regenerating road solid wastes.
Background
Along with the continuous implementation of policy and interest, the traffic network is gradually improved, and the road traffic mileage in China is continuously increased. According to the relevant statistical data of the department of transportation, the total mileage of the highway in China reaches 477.35 kilometers by 2017, wherein the highway mileage is 13.65 kilometers. At present, serious cracks, ruts, pits, looseness and other diseases appear on a plurality of asphalt pavements paved in the early period, and expressways built in the last century also start to enter the periods of reconstruction, expansion and major and middle repair successively. In the process of renovating and reconstructing the original pavement, a large amount of waste asphalt mixture (RAP) is generated, and if the RAP is not recycled, a large amount of land is occupied, the surrounding ecological environment is polluted, and simultaneously, the RAP is a huge waste of non-renewable resources such as asphalt, stone and the like.
Under the background, the asphalt pavement recycling technology is more and more concerned and valued by people, and hot mix plant recycling is developed quickly and applied widely at present and is also the key point of the research on the asphalt mixture recycling technology in China at the present stage. The method is a technology for paving a pavement by conveying a recycled RAP material to a stirring station, mixing the RAP material with new aggregates, new asphalt, a regenerant (if necessary) and the like in a certain proportion through treatment processes such as crushing, screening and the like.
In the prior art, a convenient and quick method for sorting and regenerating road solid wastes is lacked, and the asphalt wastes of roads can be efficiently utilized.
Disclosure of Invention
The invention aims to provide a method for sorting and regenerating road solid wastes, and aims to provide a convenient and quick method for sorting and regenerating road solid wastes.
The invention is realized in this way, the road solid waste sorting and regeneration method, including stripping structure, sorting unit, stirring device and storage device, the sorting unit, the stirring device and the storage device are linked in turn, wherein there are the following steps:
1) milling the asphalt pavement with a cold milling machine to generate serious cracks, ruts, pits and loose asphalt pavement, collecting milled asphalt waste materials, and transferring the collected asphalt waste materials into the sorting device;
2) the sorting device sorts the asphalt waste and transfers the sorted fine-particle asphalt waste into the stirring device;
3) and the stirring device pours the coarse-particle asphalt waste or the fine-particle asphalt waste into the asphalt material, and the stirring is carried out to process the asphalt material to form asphalt paving material which is transmitted to the storage device.
Further, in the step (2), the asphalt waste is separated into 10-20 nm coarse-particle asphalt waste and 0-10 nm fine-particle asphalt waste by using an 11nm sieve.
Further, the fine asphalt waste in the step (3) is transferred to the stirring device, and the stirring device performs physical detection on the fine asphalt waste before the asphalt material is poured.
Further, after the asphalt paving material is prepared by the stirring device in the step (3), the asphalt paving material is subjected to physical detection.
Further, 20%, 30%, 40% and 50% of coarse grade asphalt and 20%, 30%, 40% and 50% of fine grade asphalt are respectively blended in the asphalt material in the step (3) and the formed asphalt pavement is physically detected in a grading manner.
Further, agitating unit includes heating cabinet and stirring piece, the heating cabinet is formed with the heating chamber, stirring piece is located in the heating chamber, be equipped with on the heating cabinet with the input port of heating chamber intercommunication, sorting unit passes through the pipeline intercommunication the input port.
Further, the stirring piece with the inner wall fixed connection in heating chamber, the heating cabinet receives the drive structure drive, drives the rotatory stirring of stirring piece the pitch material and coarse grain pitch waste material or fine grain pitch waste material.
Further, the stirring piece comprises two stirring plates which are arranged around the center of the heating cavity.
Further, the two stirring plates are spirally arranged from top to bottom.
Further, the stirring plate gradually extends towards the center of the heating cavity from top to bottom.
Compared with the prior art, the method for sorting and regenerating the road solid waste provided by the invention has the advantages that the solid asphalt waste is sorted in sequence by utilizing the sorting device and the stirring device to obtain the fine-particle asphalt waste and the coarse-particle asphalt waste, then the fine-particle asphalt waste and the coarse-particle asphalt waste with different proportions are added into the asphalt material, and the stirring device is used for stirring the asphalt material simultaneously, so that the material consumption of the asphalt material is greatly reduced, and the quality of the formed asphalt pavement is enhanced, therefore, the solid asphalt waste is finely sorted, and the high-quality recycling is realized by adopting different treatment methods.
Drawings
FIG. 1 is a schematic diagram of the steps of the road solid waste sorting and regeneration method provided by the present invention;
FIG. 2 is a schematic front view of the road solid waste sorting and recycling apparatus provided by the present invention;
FIG. 3 is a schematic partial cross-sectional view of a solid waste stripping structure for roads provided by the present invention;
FIG. 4 is a schematic view of a partial cross-section of a solid waste sorting structure for roads provided by the present invention;
fig. 5 is a partial cross-sectional schematic view of the stirring structure provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-5, preferred embodiments of the present invention are shown.
The method for sorting and regenerating the road solid wastes provided by the embodiment is used for recycling the asphalt wastes.
The road solid waste sorting and regenerating method comprises a stripping structure 11, a sorting structure 12, a stirring structure 13 and a storage structure 14, wherein the sorting structure 12, the stirring structure 13 and the storage structure 14 are sequentially linked, and the method comprises the following steps:
1) milling a loose asphalt pavement with severe cracks, ruts, pits and grooves by using a cold milling machine, collecting milled asphalt waste materials, and transferring the asphalt waste materials into a separation structure 12 after passing through a stripping structure 11;
2) the separation structure 12 separates the asphalt waste, and the separated fine particle asphalt waste is moved into the stirring structure 13;
3) the stirring structure 13 pours the coarse asphalt waste or the fine asphalt waste into the asphalt material, and the stirring is processed to form asphalt paving material which is transmitted to the storage device.
By utilizing the sorting structure 12 and the stirring structure 13, the solid asphalt waste is sorted successively to obtain fine asphalt waste and coarse asphalt waste, then the fine asphalt waste and the coarse asphalt waste with different proportions are added into the asphalt material, and the stirring structure 13 is used for stirring the asphalt material simultaneously, so that the material consumption of the asphalt material is greatly reduced, the quality of formed asphalt pavement is enhanced, the solid asphalt waste is finely sorted, and different treatment methods are adopted to achieve high-quality recycling.
In the step (2), the asphalt waste is separated into 10-20 nm coarse-particle asphalt waste and 0-10 nm fine-particle asphalt waste by using an 11nm sieve, so that a better separation method is realized.
In addition, the fine asphalt waste in the step (3) is transferred to the stirring structure 13, and before the asphalt material is poured, the stirring structure 13 performs physical detection on the fine asphalt waste.
And (3) after the stirring structure 13 is made into asphalt pavement in the step (3), carrying out physical detection on the asphalt pavement.
Specifically, 20%, 30%, 40% and 50% coarse grade asphalt and 20%, 30%, 40% and 50% fine grade asphalt are respectively blended in the asphalt material in the step (3) and the formed asphalt pavement is subjected to physical detection in different times.
As shown in fig. 2, 3 and 4, the embodiment of the road solid waste sorting and recycling device includes a sorting structure 12, a stirring structure 13 and a storage structure 14, wherein the stirring structure 13 includes a heating box and a stirring piece, the heating box is hollow to form a heating cavity, and the stirring piece is located in the heating cavity; an input port communicated with the heating cavity is arranged on the heating box, and the sorting structure 12 is communicated with the input port through a pipeline.
Solid asphalt waste is sorted successively by utilizing the sorting structure 12 and the stirring structure 13 to obtain fine-particle asphalt waste and coarse-particle asphalt waste, and then the asphalt waste is added into the asphalt material in the stirring structure 13, so that the asphalt material is regenerated.
Wherein, stirring piece and the inner wall fixed connection who heats the chamber, the heating cabinet receives the drive structure drive, drives the rotatory stirring pitch material of stirring piece and coarse grain pitch waste material or fine grain pitch waste material.
The stirring piece comprises two stirring plates 23, and the stirring plates 23 are arranged around the center of the heating cavity; the two stirring plates 23 are spirally arranged from top to bottom; the stirring plate 23 gradually extends towards the center of the heating cavity from top to bottom; the stirring plate 23 becomes thinner gradually from top to bottom; an output port communicated with the outside is formed at the bottom of the heating cavity; the stirring plate 23 is fixedly connected with the inner wall of the heating cavity.
Furthermore, the outlet opening is connected to a storage structure 14 through an outlet duct, the storage structure 14 comprising a storage tank and a thermostatic element arranged around the inner wall of the storage tank, the thermostatic element maintaining the temperature inside the storage tank.
Still, stirring structure 13 includes agitator motor, and agitator motor connects the heating cabinet, and agitator motor orders about the heating cabinet rotatory.
Specifically, stirring structure 13 includes end the union piece, is formed with the shrinkage pool that link up end the union piece on the end the union piece, and the lower extreme of heating cabinet extends and is formed with outstanding piece, and the delivery outlet pierces through outstanding piece, outstanding piece and shrinkage pool roll connection, and output tube is connected to in the shrinkage pool.
As shown in fig. 3, the embodiment of the road solid waste stripping structure comprises a crushing structure and a screening structure, wherein the crushing structure comprises a crushing box, a feeding port is communicated with the crushing box, and the lower part of the crushing box is communicated with the screening structure through a pipeline; the screening structure is including screening the case, tremble material structure, heating structure and cooling structure, trembles material structure, heating structure and cooling structure and is located the screening case, and the pitch waste material is smashed the back and after trembleing the material structure, and the heating structure orders about the pitch waste material and drops from the gravel and sand in small, broken bits, and the pitch waste material that the cooling structure cooling dropped is transmitted into in the sorting structure.
Through setting up crushing structure and screening structure, the asphalt waste is smashed to crushing structure, and then the asphalt waste is sent to the screening structure from the pipeline, and the screening structure is including screening case and tremble the material structure, wherein tremble the material structure and be located the screening case, and tremble the material structure and be connected with heating structure, and like this, heating structure help tremble the material structure and separate asphalt waste and grit in small, broken bits, and is very convenient.
Specifically, the crushing chamber includes a crushing chamber and two rotating rollers 15 disposed in the crushing chamber, the rotating rollers 15 being disposed on both sides of the crushing chamber to rotate toward the center.
Specifically, the rotary roller 15 is provided with a plurality of projecting blocks 24, the plurality of projecting blocks 24 being formed on the surface of the rotary roller 15; a plurality of the protruding blocks 24 are arranged at intervals; a plurality of protruding blocks 24 are arranged around the center of the roller; a plurality of the tabs 24 are cooperatively disposed with one another.
In addition, the inner wall of the crushing box body is provided with a rotating motor, and at least two rotating motors drive the rotating roller 15 to rotate; one end of the rotary roller 15 is connected with the rotary motor, and the other end is connected with the inner wall of the crushing box body in a rolling way.
Also, the bottom of the crushing chamber is connected to the screening structure through a pipe, and the rotating roller 15 crushes the large asphalt waste and then transfers the crushed asphalt waste to the screening structure through a pipe.
In addition, the material shaking structure distinguishes asphalt waste materials and fine crushed sand stones through shaking; wherein tremble the material structure including trembleing flitch 21, heating structure heating trembles flitch 21, and pitch waste material receives to tremble flitch 21 heating and softens gradually, and the fine crushing gravel and sand is separated.
Specifically, screening chamber 22 is formed to screening case cavity, trembles material board 21 and arranges in screening chamber 22, and screening chamber 22 bottom is formed with trembles the groove that falls, and the groove that shakes falls deposits the fine broken sand and stone.
Specifically, the other end that the bottom of screening chamber 22 deviates from and shakes the groove is formed with pitch groove 20, and cooling structure arranges in pitch groove 20, and when heating structure no longer heats tremble flitch 21, tremble flitch 21 and tremble into pitch groove 20 with pitch waste material, cooling structure cooling pitch waste material.
Specifically, the bottom of the screening chamber 22 is formed with a drop hole, which is connected to the sorting structure.
As shown in fig. 4, an embodiment of a physical sorting structure for solid waste of a road includes a sorting member and an input pipe, the input pipe is connected with a screening structure and the sorting member, the screening structure drives the asphalt waste to move into the sorting member, the sorting member includes a screen 16, and the screen 16 screens the asphalt waste to obtain fine asphalt waste and coarse asphalt waste.
Through utilizing to select separately piece and input tube, input tube intercommunication screening structure and sorting piece, the pitch waste material that the screening structure was not screened is carried through the input tube, then utilizes the screening in the sorting piece to screen the pitch waste material, obtains fine grain pitch waste material and coarse grain pitch waste material, and whole process need not artificially control, and is very convenient.
Specifically, the mesh opening of the screen 16 is 11nm wide; the sorting part comprises a sorting box, a sorting cavity is formed in the sorting box, a transverse lug is arranged in the sorting cavity, the transverse lug extends to be connected with the inner walls of two sides of the sorting cavity, and the sorting cavity is divided into a first cavity 18 and a second cavity 19 by the transverse lug; a screen 16 is erected on the transverse projection, the asphalt waste falls onto the screen 16, and the screen 16 screens fine-grained asphalt waste of less than 11nm into the first chamber 18.
Specifically, the upper side of the transverse projection is connected with a rotating motor, the rotating motor is connected with the screen 16 through a transverse connection frame, the screen 16 is driven to rotate, and coarse-particle asphalt waste materials larger than 11nm fall into the second cavity 19.
Specifically, a concave groove is formed on the side of the screen 16 facing the transverse convex block, and the end part of the transverse connecting frame is embedded in the concave groove; the four sides of the screen 16 are respectively provided with a butt joint end, and the butt joint ends are sunken to form trapezoidal grooves; the inner wall of the separation cavity is provided with a cross bar, and the groove wall of the trapezoidal groove is abutted against the cross bar.
More specifically, the exterior of the sorting box is formed with a mounting port communicated to the sorting chamber, and the input pipe is mounted in the mounting port; the mounting opening faces the screen 16.
More specifically, the cross frame is provided with a vibration member 17, the vibration member 17 vibrates the cross frame, and the cross frame drives the screen 16 to vibrate.
More specifically, the bottom of the first chamber 18 and the bottom of the second chamber 19 are formed with a first opening and a second opening, which respectively penetrate the outer wall of the sorting box, and the fine particle pipe and the coarse particle pipe communicate with the first opening and the second opening.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The method for sorting and regenerating the road solid wastes is characterized by comprising a stripping structure, a sorting device, a stirring device and a storage device, wherein the sorting device, the stirring device and the storage device are sequentially linked, and the method comprises the following steps:
1) milling the asphalt pavement with a cold milling machine to generate serious cracks, ruts, pits and loose asphalt pavement, collecting milled asphalt waste materials, stripping the structure, and transferring the asphalt waste materials into the sorting device;
2) the sorting device sorts the asphalt waste and transfers the sorted fine-particle asphalt waste into the stirring device;
3) and the stirring device pours the coarse-particle asphalt waste or the fine-particle asphalt waste into the asphalt material, and the stirring is carried out to process the asphalt material to form asphalt paving material which is transmitted to the storage device.
2. The method for sorting and recycling the road solid wastes according to claim 1, wherein in the step (2), the asphalt wastes are sorted into coarse-particle asphalt wastes with the particle size of 10-20 nm and fine-particle asphalt wastes with the particle size of 0-10 nm by using an 11nm sieve.
3. The method for sorting and recycling road solid wastes according to claim 1, wherein the fine asphalt waste materials in the step (3) are transferred to the stirring device, and the stirring device physically detects the fine asphalt waste materials before pouring the asphalt materials.
4. The method for sorting and recycling road solid wastes according to claim 1, wherein physical inspection is performed on the asphalt pavement after the asphalt pavement is made by the stirring device in the step (3).
5. The method for sorting and recycling solid wastes of roads as claimed in claim 1, wherein 20%, 30%, 40% and 50% of coarse grade asphalt and 20%, 30%, 40% and 50% of fine grade asphalt are respectively blended in the asphalt material in the step (3) and the formed asphalt pavement is physically inspected in several times.
6. The method for sorting and recycling road solid wastes according to claim 5, wherein the stirring device comprises a heating box and a stirring piece, the heating box is formed with a heating cavity, the stirring piece is positioned in the heating cavity, the heating box is provided with an input port communicated with the heating cavity, and the sorting device is communicated with the input port through a pipeline.
7. The method for sorting and recycling road solid wastes according to claim 6, wherein said stirring member is fixedly connected with the inner wall of said heating chamber, and said heating chamber is driven by a driving structure to drive said stirring member to rotate and stir said asphalt material and said coarse asphalt waste material or said fine asphalt waste material.
8. The method for sorting and recycling road solid wastes according to claim 7, wherein said stirring member comprises two stirring plates, said stirring plates being arranged around the center of said heating chamber.
9. The method for sorting and recycling road solid wastes according to claim 8, wherein two said agitating plates are spirally arranged from top to bottom.
10. The method for sorting and recycling road solid wastes according to claim 9, wherein said agitating plates are gradually extended toward the center of said heating cavity from top to bottom.
CN202010615115.7A 2020-06-30 2020-06-30 Road solid waste sorting and regenerating method Pending CN111719384A (en)

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Application Number Priority Date Filing Date Title
CN202010615115.7A CN111719384A (en) 2020-06-30 2020-06-30 Road solid waste sorting and regenerating method

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Application Number Priority Date Filing Date Title
CN202010615115.7A CN111719384A (en) 2020-06-30 2020-06-30 Road solid waste sorting and regenerating method

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CN111719384A true CN111719384A (en) 2020-09-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117144751A (en) * 2023-09-13 2023-12-01 深圳市市政工程总公司 Road solid waste sorting and recycling methods

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1408865A (en) * 1971-09-07 1975-10-08 Haberl P Process for the production of a mixture containing bitumen
US5511899A (en) * 1995-02-03 1996-04-30 Greater Lebanon Refuse Authority Light duty roadway surface from recycled waste asphalt roofing shingle materials
CN103145376A (en) * 2013-03-18 2013-06-12 江苏省交通规划设计院股份有限公司 Crumb rubber powder composited regenerated all-weather road cold-patch material and production method thereof
CN105271861A (en) * 2015-11-05 2016-01-27 东莞市超逸建材有限公司 A kind of asphalt waste recycling process
CN106186837A (en) * 2016-07-17 2016-12-07 云南省公路科学技术研究院 A kind of high RAP volume high-performance warm-mixed recycled asphalt mixture and preparation method thereof
CN110331637A (en) * 2019-07-09 2019-10-15 深圳市市政工程总公司 The fine sorting reuse method of road milling asphalt waste

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1408865A (en) * 1971-09-07 1975-10-08 Haberl P Process for the production of a mixture containing bitumen
US5511899A (en) * 1995-02-03 1996-04-30 Greater Lebanon Refuse Authority Light duty roadway surface from recycled waste asphalt roofing shingle materials
CN103145376A (en) * 2013-03-18 2013-06-12 江苏省交通规划设计院股份有限公司 Crumb rubber powder composited regenerated all-weather road cold-patch material and production method thereof
CN105271861A (en) * 2015-11-05 2016-01-27 东莞市超逸建材有限公司 A kind of asphalt waste recycling process
CN106186837A (en) * 2016-07-17 2016-12-07 云南省公路科学技术研究院 A kind of high RAP volume high-performance warm-mixed recycled asphalt mixture and preparation method thereof
CN110331637A (en) * 2019-07-09 2019-10-15 深圳市市政工程总公司 The fine sorting reuse method of road milling asphalt waste

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117144751A (en) * 2023-09-13 2023-12-01 深圳市市政工程总公司 Road solid waste sorting and recycling methods
CN117144751B (en) * 2023-09-13 2025-10-24 深圳市政集团有限公司 Road solid waste sorting and recycling methods

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