Geopolymer stable pavement recycled aggregate sorting device and base layer construction process thereof

Abstract

The invention discloses a geopolymer stabilized pavement recycled aggregate sorting device and a base layer construction process thereof. Comprising a shell, a sorting space arranged in the shell, a supporting rod fixedly connected with the inner wall of the sorting space, a plurality of sorting plates rotationally connected with the supporting rod, and an adjusting cylinder arranged on the inner wall of the sorting space and used for controlling the inclination angle change of the sorting plates. The alignment plates and the sliding plates are arranged at the two ends of the sorting plates correspondingly and are in sliding connection with the inner wall of the sorting space; in the aggregate treatment process, aggregate is sorted according to the particle size through swinging of the sorting plate, then the aggregate with different particle sizes is laid in a layered mode, during vibration, due to the fact that the aggregate is regularly discharged, the aggregate with the large particle size difference cannot be close to one another, contact between the aggregate and the aggregate is reduced, collision and abrasion are reduced, new disintegrating slag is not generated, and the service life of the aggregate is prolonged. The effective utilization rate of the aggregate can be improved while old mortar on the surface of the aggregate can be removed.

Description

Technical Field

[0001] The invention belongs to the technical field of recycled aggregates, and in particular relates to a geopolymer stabilized pavement recycled aggregate sorting device and a base construction process thereof. Background Art

[0002] Since the recycled aggregates made by crushing cement concrete panels on site have the characteristics of high water absorption and low strength, if the recycled aggregates are directly used to prepare the base mixture, the workability and road performance of the mixture will fluctuate greatly, and the quality is difficult to control. The main reason is that there are old mortar or asphalt impurities adhering to the surface of the recycled aggregate. These media adhering to the aggregates greatly reduce the bonding surface between cement and aggregates. Before using the aggregates, the old mortar and other impurities are removed by vibration or stirring, but the particle size of the aggregates will change. During the vibration process, the aggregates will be uneven in particle size, resulting in small aggregate particles being sandwiched in the gaps between large aggregate particles. The large and small aggregate particles collide and rub against each other, resulting in the appearance of a large amount of debris, reducing the recycling rate of the aggregates.

[0003] Therefore, it is considered to sort the aggregates and then vibrate to remove the old mortar on the surface of the aggregates. There are two main ways to sort aggregates in the prior art. One is to screen out aggregates with uniform particle size according to the required particle size. Since it is difficult to control the fragmentation of aggregates during crushing, most of the aggregates are removed, and the utilization rate of aggregates is very low. During the construction process, the particle size of recycled aggregates that can meet the use requirements has a large span. Aggregates of different particle sizes are usually mixed in proportion and used. Therefore, another grading screening method is often used. Multiple screens are used to classify aggregates by particle size through vibration or rolling, remove mortar, and then mix them in proportion. This method will also cause excessive collision and friction between aggregates of different particle sizes during the sorting and mixing process, resulting in the appearance of a large amount of debris, reducing the recycling rate of aggregates. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention aims to provide a geopolymer stabilized pavement recycled aggregate sorting device and a base construction process thereof.

[0005] The technical solution adopted by the present invention is: A geopolymer stabilized pavement recycled aggregate sorting device, comprising a shell, a sorting space arranged inside the shell, a support rod fixedly connected to the inner wall of the sorting space, a plurality of sorting plates rotatably connected to the support rod, an adjusting cylinder arranged on the inner wall of the sorting space and used to control the change of the inclination angle of the plurality of sorting plates, and a positioning plate and a sliding plate respectively arranged at both ends of the plurality of sorting plates and slidably connected to the inner wall of the sorting space; The cylinder barrel of the adjusting cylinder is fixedly connected to the inner wall of the sorting space, a sliding rod is fixedly provided on the piston rod of the adjusting cylinder, the sliding rod is slidably connected to the inner wall of the sorting space, a plurality of limit pins are fixedly provided on the sliding rod, the plurality of limit pins correspond one-to-one to the plurality of sorting plates, and the plurality of sorting plates are parallel to each other.

[0006] As a preferred embodiment of the present invention, a telescopic sleeve 1 is provided on the side of the alignment plate away from the sorting plate, a spring is provided in the telescopic sleeve 1, and the two ends of the telescopic sleeve 1 are respectively used to connect the alignment plate and the inner wall of the sorting space; a telescopic sleeve 2 is provided on the side of the sliding plate away from the sorting plate, a spring is provided in the telescopic sleeve 2, and the two ends of the telescopic sleeve 2 are respectively used to connect the sliding plate and the inner wall of the sorting space.

[0007] As a preferred embodiment of the present invention, the sliding plate is a hollow structure, a baffle is slidably provided on one side of the sliding plate, a control cylinder is provided on one side of the baffle, the cylinder barrel of the control cylinder is fixedly connected to the sliding plate, the piston rod of the control cylinder is fixedly connected to the baffle, a control box is fixedly provided on one side of the shell, and the baffle is located in the control box.

[0008] As a preferred embodiment of the present invention, a connecting sleeve is fixedly provided at the hollow position of the sliding plate, the connecting sleeve is located at the end of the sliding plate away from the sorting plate, a fixing sleeve is slidably provided at the end of the connecting sleeve away from the sorting plate, the end of the fixing sleeve away from the sorting plate is fixedly connected to the inner wall of the sorting space, the fixing sleeve passes through the shell, and the position where the fixing sleeve passes through the shell is provided with a discharge port fixedly connected to the outer wall of the shell, and the opening of the discharge port faces downward.

[0009] As a preferred embodiment of the present invention, a control bucket is provided on one side of the discharge port, a screening plate is fixedly provided on one side of the control bucket, and the screening plate is in an inclined state; a collecting trough is provided on the side of the control bucket close to the screening plate, and the control bucket and the collecting trough are detachably connected by a latch.

[0010] As a preferred embodiment of the present invention, a fixing frame is provided on the side of the collecting trough away from the control bucket, and vibration springs are provided at both ends of the fixing frame respectively, and the vibration springs are used to connect the outer wall of the shell and the fixing frame, and a vibration motor is fixedly provided on the end of the fixing frame away from the collecting trough, an eccentric block is fixedly provided on the output shaft of the vibration motor, a fixing frame is fixedly provided on one side of the fixing frame, and the collecting trough is fixedly connected to the fixing frame.

[0011] As a preferred embodiment of the present invention, a double-shaft motor is fixedly provided on one side of the shell, and a screw rod is fixedly provided on the output shafts at both ends of the double-shaft motor respectively, each of the screw rods is threadedly connected to a threaded sleeve, and a shielding plate is fixedly provided on one side of each threaded sleeve, and the two shielding plates are respectively slidably connected to the shell.

[0012] As a preferred embodiment of the present invention, the sorting effects of the multiple sorting plates are different, the top sorting plate sorts out the aggregate with the largest particles, and the bottom sorting plate sorts out the aggregate with the smallest particles in descending order, and a collecting plate is provided on one side of the sorting plate away from the shielding plate, and the collecting plate is used to collect debris and dust in the aggregate.

[0013] The construction process of geopolymer stabilized pavement recycled aggregate base includes the following steps: S1. Preparation before construction; including material preparation, equipment preparation and site preparation; the material preparation includes collecting aggregate and main inland polymer gel material; S2, aggregate processing; crushing the collected aggregates, using the geopolymer stabilized pavement regeneration aggregate sorting device, grouping the aggregates and processing them in batches, each group of materials is first sorted according to its particle size, then mixed in layers according to its particle size, and finally vibrated to remove impurities; S3, geopolymer preparation: add the silicon-aluminum raw material and the alkaline activator into the stirring device, first dry-mix evenly, and then add clean water for wet mixing; S4, mixing the mixture; adding the processed aggregate into the mixing equipment, and then adding the prepared geopolymer gelling material, and mixing them thoroughly; S5, paving and compaction: The mixed geopolymer stabilized pavement recycled aggregate mixture is transported to the construction site and paved by a paver. After paving, it is immediately compacted by a roller. First, a light roller is used for initial compaction, then a heavy roller is used for secondary compaction, and finally a light roller is used for final compaction; S6. Maintenance and quality inspection: After compaction is completed, the base layer is maintained by covering it with plastic film. After the maintenance period, the compaction, flatness, deflection value and unconfined compressive strength of the base layer are tested.

[0014] As a preferred embodiment of the present invention, in step S2, the aggregate after impurity removal is washed and dried in batches according to the original grouping, and then stacked according to the original grouping; in step S4, the aggregate is added to the mixing equipment in batches according to the grouping in step S2.

[0015] The beneficial effects of the present invention are as follows: as a geopolymer stabilized pavement regeneration aggregate sorting device and its base construction process, during the aggregate processing process, the swing of the sorting plate is used to sort the aggregate according to its particle size, and then the aggregates of different particle sizes are laid in layers, the aggregate with the smallest particle size is located on the lower side, and the aggregate with a larger particle size is located on the upper side. During the sorting process, the aggregates enter the sorting device in batches, and the swing of the sorting plate is used to make the aggregates roll along the sorting plate, thereby reducing the friction between the aggregates. The sorting plate is relatively smooth, thereby reducing the fragmentation of the aggregates during the sorting process. Moreover, after the aggregates are sorted, the present invention first mixes and then removes the old mortar remaining on the surface of the aggregates by vibration. During the vibration, due to the regular discharge of the aggregates, the aggregates with large particle size differences will not be close to each other, thereby reducing the contact between the aggregates, reducing collisions and wear, and not generating new debris. While being able to remove the old mortar on the surface of the aggregates, the effective utilization rate of the aggregates is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 The present invention Figure 1 A schematic cross-sectional structure diagram of; Figure 3 The present invention Figure 1 A schematic diagram of the structure after the shell is hidden; Figure 4 The present invention Figure 3 Schematic diagram of the structure after the sorting plate is hidden; Figure 5 The present invention Figure 4 Schematic diagram of the sliding plate structure; Figure 6 The present invention Figure 4 Schematic diagram of the collection tank structure. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0020] Combine the following Figure 1-6 The specific embodiment of the present invention is described. The geopolymer stabilized pavement recycled aggregate sorting device includes a shell 11, a sorting space arranged inside the shell 11, a support rod 25 fixedly connected to the inner wall of the sorting space, a plurality of sorting plates 32 rotatably connected to the support rod 25, an adjusting cylinder 24 arranged on the inner wall of the sorting space and used to control the change of the inclination angle of the plurality of sorting plates 32, and a positioning plate 23 and a sliding plate 28 respectively arranged at both ends of the plurality of sorting plates 32 and slidably connected to the inner wall of the sorting space; the aggregates are sorted according to their particle sizes by swinging the sorting plates 32, and the aggregates with particle sizes meeting the recycling requirements are screened out, and the aggregates with different particle sizes are laid in layers, with the aggregates with the smallest particle size located at the lower side and the aggregates with larger particle sizes located at the upper side. During vibration, due to the regular discharge of aggregates, aggregates with large particle size differences will not be close to each other, thereby reducing the contact between aggregates, reducing collision and wear.

[0021] When the aggregate is finally used, it is necessary to mix aggregates of different particle sizes together. Originally, the aggregate after the old mortar is removed by vibration is relatively brittle. Considering that the aggregates of different particle sizes are mixed by stirring, a large amount of aggregates will be broken. Therefore, the present invention processes the aggregates in batches, and each group of aggregates is sorted and laid in layers. Finally, the old mortar is removed by vibration. Each group of clean aggregates obtained has large and small particle sizes and can be used directly.

[0022] The cylinder barrel of the adjusting cylinder 24 is fixedly connected to the inner wall of the sorting space, a sliding rod 37 is fixedly provided on the piston rod of the adjusting cylinder 24, the sliding rod 37 is slidably connected to the inner wall of the sorting space, a plurality of stop pins 36 are fixedly provided on the sliding rod 37, the plurality of stop pins 36 correspond to the plurality of sorting plates 32 one by one, and the plurality of sorting plates 32 are parallel to each other. There are two adjusting cylinders 24, which are respectively located on both sides of the sorting space, one controls the left side of the sorting plate 32 to move downward, and the other controls the right side of the sorting plate 32 to move downward.

[0023] Advantageously, the alignment plate 23 is provided with a telescopic sleeve 1 22 on the side away from the sorting plate 32, a spring is provided in the telescopic sleeve 1 22, and the two ends of the telescopic sleeve 1 22 are respectively used to connect the alignment plate 23 and the inner wall of the sorting space; the sliding plate 28 is provided with a telescopic sleeve 27 on the side away from the sorting plate 32, a spring is provided in the telescopic sleeve 27, and the two ends of the telescopic sleeve 27 are respectively used to connect the sliding plate 28 and the inner wall of the sorting space. During the process of the angle change of the sorting plate 32, the sliding plates 28 and the alignment plate 23 on both sides always keep in contact with the sorting plate 32, and the aggregate will not fall from the two ends of the sorting plate 32.

[0024] Advantageously, the sliding plate 28 is a hollow structure, a baffle 26 is slidably provided on one side of the sliding plate 28, a control cylinder 33 is provided on one side of the baffle 26, a cylinder barrel of the control cylinder 33 is fixedly connected to the sliding plate 28, a piston rod of the control cylinder 33 is fixedly connected to the baffle 26, a control box 16 is fixedly provided on one side of the housing 11, and the baffle 26 is located in the control box 16. When the sorting plate 32 tilts to one side, the baffle 26 at the sliding plate 28 opens, and the aggregate can slide down under the action of its gravity.

[0025] Advantageously, a connecting sleeve 34 is fixedly provided at the hollow position of the sliding plate 28, and the connecting sleeve 34 is located at one end of the sliding plate 28 away from the sorting plate 32, and a fixing sleeve 35 is slidably provided at the end of the connecting sleeve 34 away from the sorting plate 32, and the end of the fixing sleeve 35 away from the sorting plate 32 is fixedly connected to the inner wall of the sorting space, and the fixing sleeve 35 passes through the shell 11, and a discharge port 17 fixedly connected to the outer wall of the shell 11 is provided at the position where the fixing sleeve 35 passes through the shell 11, and the opening of the discharge port 17 faces downward. During the swinging process of the sorting plate 32, the connecting sleeve 34 will move with the sliding plate 28, and the connecting sleeve 34 and the fixing sleeve 35 will slide, and the aggregate will have a certain acceleration during the sliding process, so that the aggregate can pass through the connecting sleeve 34 and the fixing sleeve 35.

[0026] Advantageously, a control bucket 18 is provided on one side of the discharge port 17, a screening plate 38 is fixedly provided on one side of the control bucket 18, and the screening plate 38 is in an inclined state; a collecting trough 19 is provided on one side of the control bucket 18 close to the screening plate 38, and the control bucket 18 and the collecting trough 19 are detachably connected by a latch.

[0027] Advantageously, a fixing frame 31 is provided on the side of the collecting tank 19 away from the control bucket 18, and vibration springs 29 are provided at both ends of the fixing frame 31, and the vibration springs 29 are used to connect the outer wall of the housing 11 and the fixing frame 31, and a vibration motor 30 is fixedly provided on the end of the fixing frame 31 away from the collecting tank 19, and an eccentric block is fixedly provided on the output shaft of the vibration motor 30, and a fixing frame 20 is fixedly provided on one side of the fixing frame 31, and the collecting tank 19 is fixedly connected to the fixing frame 20. The vibration motor 30 drives the fan-shaped eccentric block on its output shaft to rotate, and under the action of the fan-shaped eccentric block, the vibration motor 30 is forced to vibrate, and the vibration amplitude is amplified by the vibration spring 29.

[0028] Advantageously, a double-output shaft motor 13 is fixedly provided on one side of the housing 11, and a screw rod 14 is fixedly provided on the output shafts at both ends of the double-output shaft motor 13, and a threaded sleeve 12 is threadedly connected to each screw rod 14, and a shielding plate 15 is fixedly provided on one side of each threaded sleeve 12, and the two shielding plates 15 are respectively slidably connected to the housing 11. An output shaft is provided at both ends of the double-output shaft motor 13, and the screw rods 14 on both sides have opposite threads, so that the two shielding plates 15 can be opened and closed at the same time.

[0029] Advantageously, the sorting effects of the plurality of sorting plates 32 are different. The top sorting plate 32 sorts the largest aggregate, and the bottom sorting plate 32 sorts the smallest aggregate. The sorting plate 32 is provided with a collecting tray 21 on the side away from the shielding plate 15. The collecting tray 21 is used to collect the debris and dust in the aggregate. During the swinging of the sorting plate 32, there is basically no slippage between the aggregates, so no new debris or dust is generated. The debris and dust falling into the collecting tray 21 are only generated during the crushing of the aggregates. These debris are not suitable for use as recycled aggregates due to their small particle size.

[0030] The construction process of geopolymer stabilized pavement recycled aggregate base includes the following steps: S1. Preparation before construction; including material preparation, equipment preparation and site preparation; the material preparation includes collecting aggregate and main inland polymer gel material; S2, aggregate processing; crushing the collected aggregates, using the geopolymer stabilized pavement regeneration aggregate sorting device, grouping the aggregates and processing them in batches, each group of materials is first sorted according to its particle size, then mixed in layers according to its particle size, and finally vibrated to remove impurities; S3, geopolymer preparation: add the silicon-aluminum raw material and the alkaline activator into the stirring device, first dry-mix evenly, and then add clean water for wet mixing; S4, mixing the mixture; adding the processed aggregate into the mixing equipment, and then adding the prepared geopolymer gelling material, and mixing them thoroughly; S5, paving and compaction: The mixed geopolymer stabilized pavement recycled aggregate mixture is transported to the construction site and paved by a paver. After paving, it is immediately compacted by a roller. First, a light roller is used for initial compaction, then a heavy roller is used for secondary compaction, and finally a light roller is used for final compaction; S6. Maintenance and quality inspection: After compaction is completed, the base layer is maintained by covering it with plastic film. After the maintenance period, the compaction, flatness, deflection value and unconfined compressive strength of the base layer are tested.

[0031] Advantageously, in step S2, the aggregates after impurities removal are washed and dried in batches according to the original groups, and then stacked according to the original groups; in step S4, the aggregates are added to the mixing equipment in batches according to the groups in step S2.

[0032] The working principle of the polymer stabilized pavement recycled aggregate sorting device of the present invention is as follows: In the initial state, the baffle plate 26 overlaps with the hollowed-out position of the sliding plate 28 , blocking the connecting sleeve 34 .

[0033] The double-output shaft motor 13 is controlled to start, and the double-output shaft motor 13 is started to control the double-output shaft motors 13 on both sides to rotate, driving the threaded sleeves 12 and the shielding plate 15 on both sides to move, and opening the feeding position on the upper side of the shell 11.

[0034] Put the grouped aggregates into the sorting space, and the aggregates will fall on the uppermost sorting plate 32. The control adjusting cylinder 24 is started, and the piston rod of the adjusting cylinder 24 drives the sliding rod 37 to move. The limit pin 36 moves with the sliding rod 37, and the limit pin 36 drives all the ends of the alignment plates 23 to move up and down. In this process, the limit pin 36 and the surface of the sorting plate 32 slide, the alignment plate 23 and the sliding plate 28 slide with the inner wall of the sorting space, the telescopic sleeve 1 22 and the telescopic sleeve 2 27 are telescoped, and the connecting sleeve 34 and the fixed sleeve 35 slide.

[0035] With the cooperation of the two adjusting cylinders 24, the two ends of the sorting plate 32 swing up and down. In this process, the aggregate with the smallest particle size will fall down through the upper sorting plate 32. After a certain period of time, the aggregate is layered from large to small according to its particle size, and the powdered aggregate with no regeneration meaning and some impurities fall into the collecting tray 21 and are collected. After a certain amount is collected, it is processed.

[0036] The control adjustment cylinder 24 is started to tilt the plurality of sorting plates 32 toward one end, and maintain the Figure 2In the state shown, the control cylinder 33 is started, and the piston rod of the control cylinder 33 is extended to drive the baffle 26 to move. During the withdrawal of the baffle 26, the lowermost connecting sleeve 34 is no longer blocked. Under the action of the gravity of the aggregate itself, the aggregate with the smallest particle size slides along the surface of the inclined sorting plate 32, passes through the discharge port 17 and falls into the control bucket 18. As the baffle 26 is gradually withdrawn, the aggregate with larger particle size and the aggregate with the largest particle size fall into the control bucket 18 through the connecting sleeve 34, the fixing sleeve 35 and the discharge port 17 in turn.

[0037] Finally, the vibration motor 30 is started, and the fixed frame 31, the fixed frame 20, the collecting tank 19 and the control bucket 18 are forced to vibrate together. The impurities such as the old mortar on the surface of the aggregate are separated from the aggregate and enter the collecting tank 19 through the screening plate 38. In this process, the small aggregate is on the lower side and the large aggregate is on the upper side. The density of the lower side is higher. During the vibration process, the relative displacement between aggregates of different particle sizes is reduced, the wear and collision between aggregates are reduced, and no new debris is generated.

[0038] After a certain period of time, the equipment stops working, the control bucket 18 is disassembled, the aggregate inside is poured out, and it is distinguished from other aggregates. Subsequently, it is soaked in clean water and naturally dried according to the original grouping. During the cleaning and drying process, the aggregate is not stirred drastically to avoid the generation of new aggregate debris and improve the utilization rate of the aggregate.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. Geopolymer stabilized pavement recycled aggregate sorting device, characterized by: It comprises a shell, a sorting space arranged inside the shell, a support rod fixedly connected to the inner wall of the sorting space, a plurality of sorting plates respectively rotatably connected to the support rod, an adjustment cylinder arranged on the inner wall of the sorting space and used to control the change of the inclination angle of the plurality of sorting plates, and an alignment plate and a sliding plate respectively arranged at both ends of the plurality of sorting plates and slidably connected to the inner wall of the sorting space; The cylinder barrel of the adjusting cylinder is fixedly connected to the inner wall of the sorting space, a sliding rod is fixedly provided on the piston rod of the adjusting cylinder, the sliding rod is slidably connected to the inner wall of the sorting space, a plurality of limit pins are fixedly provided on the sliding rod, the plurality of limit pins correspond one-to-one to the plurality of sorting plates, and the plurality of sorting plates are parallel to each other.

2. The geopolymer stabilized pavement regeneration aggregate sorting device according to claim 1, characterized in that: A telescopic sleeve 1 is provided on the side of the alignment plate away from the sorting plate, a spring is provided in the telescopic sleeve 1, and the two ends of the telescopic sleeve 1 are respectively used to connect the alignment plate and the inner wall of the sorting space; a telescopic sleeve 2 is provided on the side of the sliding plate away from the sorting plate, a spring is provided in the telescopic sleeve 2, and the two ends of the telescopic sleeve 2 are respectively used to connect the sliding plate and the inner wall of the sorting space.

3. The geopolymer stabilized pavement regenerated aggregate sorting device according to claim 2, characterized in that: The sliding plate is a hollow structure, a baffle is slidably provided on one side of the sliding plate, a control cylinder is provided on one side of the baffle, the cylinder barrel of the control cylinder is fixedly connected to the sliding plate, the piston rod of the control cylinder is fixedly connected to the baffle, a control box is fixedly provided on one side of the shell, and the baffle is located in the control box.

4. The geopolymer stabilized pavement regeneration aggregate sorting device according to claim 3 is characterized by: A connecting sleeve is fixedly provided at the hollow position of the sliding plate, and the connecting sleeve is located at the end of the sliding plate away from the sorting plate. A fixing sleeve is slidably provided at the end of the connecting sleeve away from the sorting plate, and the end of the fixing sleeve away from the sorting plate is fixedly connected to the inner wall of the sorting space, and the fixing sleeve passes through the shell. A discharge port fixedly connected to the outer wall of the shell is provided at the position where the fixing sleeve passes through the shell, and the opening of the discharge port faces downward.

5. The geopolymer stabilized pavement regenerated aggregate sorting device according to claim 4, characterized in that: A control bucket is provided on one side of the discharge port, a screening plate is fixedly provided on one side of the control bucket, and the screening plate is in an inclined state; a collecting trough is provided on the side of the control bucket close to the screening plate, and the control bucket and the collecting trough are detachably connected by a latch.

6. The geopolymer stabilized pavement regeneration aggregate sorting device according to claim 5, characterized in that: A fixing frame is provided on the side of the collecting trough away from the control bucket, and vibration springs are respectively provided at both ends of the fixing frame, and the vibration springs are used to connect the outer wall of the shell and the fixing frame. A vibration motor is fixedly provided on the end of the fixing frame away from the collecting trough, and an eccentric block is fixedly provided on the output shaft of the vibration motor. A fixing frame is fixedly provided on one side of the fixing frame, and the collecting trough is fixedly connected to the fixing frame.

7. The geopolymer stabilized pavement regenerated aggregate sorting device according to claim 1, characterized in that: A double-output shaft motor is fixedly provided on one side of the shell, and a screw rod is fixedly provided on the output shafts at both ends of the double-output shaft motor respectively, a threaded sleeve is threadedly connected to each screw rod, and a shielding plate is fixedly provided on one side of each threaded sleeve, and the two shielding plates are respectively slidably connected to the shell.

8. The geopolymer stabilized pavement regenerated aggregate sorting device according to claim 7, characterized in that: The sorting effects of the multiple sorting plates are different. The top sorting plate sorts out the aggregate with the largest particles, and the bottom sorting plate sorts out the aggregate with the smallest particles in descending order. A collecting plate is provided on the side of the sorting plate away from the shielding plate, and the collecting plate is used to collect debris and dust in the aggregate.

9. A construction process for a geopolymer stabilized pavement recycled aggregate base, using a geopolymer stabilized pavement recycled aggregate sorting device as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Preparation before construction; including material preparation, equipment preparation and site preparation; the material preparation includes collecting aggregate and main inland polymer gel material; S2. Aggregate processing; The collected aggregates are crushed, and the aggregates are grouped and processed in batches using the geopolymer stabilized pavement recycled aggregate sorting device. Each group of materials is first sorted according to its particle size, then mixed in layers according to its particle size, and finally vibrated to remove impurities; S3, geopolymer preparation: add the silicon-aluminum raw material and the alkaline activator into the stirring device, first dry-mix evenly, and then add clean water for wet mixing; S4, mixing the mixture; adding the processed aggregate into the mixing equipment, and then adding the prepared geopolymer gelling material, and mixing them thoroughly; S5, paving and compaction: The mixed geopolymer stabilized pavement recycled aggregate mixture is transported to the construction site and paved by a paver. After paving, it is immediately compacted by a roller. First, a light roller is used for initial compaction, then a heavy roller is used for secondary compaction, and finally a light roller is used for final compaction; S6. Maintenance and quality inspection: After compaction is completed, the base layer is maintained by covering it with plastic film. After the maintenance period, the compaction, flatness, deflection value and unconfined compressive strength of the base layer are tested.

10. The construction process of geopolymer stabilized pavement recycled aggregate base according to claim 9, characterized in that: In step S2, the aggregates after impurity removal are washed and dried in batches according to the original groups, and then stacked according to the original groups; In step S4, the aggregates are added to the mixing equipment in batches according to the grouping in step S2.

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