CN219637603U - Asphalt pavement repairing structure - Google Patents
Asphalt pavement repairing structure Download PDFInfo
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- CN219637603U CN219637603U CN202321241088.7U CN202321241088U CN219637603U CN 219637603 U CN219637603 U CN 219637603U CN 202321241088 U CN202321241088 U CN 202321241088U CN 219637603 U CN219637603 U CN 219637603U
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- recycled
- base layer
- asphalt
- self
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- 239000010426 asphalt Substances 0.000 title claims abstract description 35
- 239000010410 layer Substances 0.000 claims abstract description 68
- 239000002344 surface layer Substances 0.000 claims abstract description 38
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 36
- 239000004567 concrete Substances 0.000 claims abstract description 35
- 239000002699 waste material Substances 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 20
- 230000008439 repair process Effects 0.000 claims description 18
- 239000004575 stone Substances 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000005056 compaction Methods 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000012790 adhesive layer Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000012492 regenerant Substances 0.000 description 2
- 239000011376 self-consolidating concrete Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920000715 Mucilage Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses an asphalt pavement repairing structure, which comprises a groove formed in an original road structure, wherein the original road structure is sequentially provided with an original road surface layer, an original road surface base layer and an original road bed from top to bottom, the groove comprises a first groove section positioned in the original road bed, a second groove section positioned in the original road surface layer and a third groove section positioned in the original road surface base layer, a pipeline is paved in the first groove section, a self-compacting recycled concrete base layer is arranged in the second groove section, a middle-grain type recycled asphalt concrete surface layer and a fine-grain type recycled asphalt concrete surface layer are arranged in the third groove section from bottom to top, a grille is arranged between the self-compacting recycled concrete base layer and the middle-grain type recycled asphalt concrete surface layer, the periphery of the grille is fixedly connected with the original road surface base layer, and the asphalt pavement repairing structure is used for repairing the smooth and coordinated boundary, is easy to roll and compact, the pavement is difficult to sink after the traffic is opened, the repaired pavement is difficult to break at the joint position, the structure is stable, and the service life and the travelling comfort of the road are improved.
Description
Technical Field
The utility model is used in the technical field of pavement repair, and particularly relates to an asphalt pavement repair structure.
Background
At present, urban black and odorous water body, waterlogging and other problems seriously damage living environment and urban image, the root cause is mainly that a combined pipe network severely restricts urban drainage waterlogging prevention capability, an urban drainage pipe network is imperfect, wherein, implementation of rain and sewage diversion modification is an important means for perfecting an urban drainage system, but at present, urban roads mainly take asphalt pavements as main materials, an original pavement structure needs to be broken during pipeline laying, pavement restoration needs to be carried out in time after pipeline laying is completed, and pavement repair materials are difficult to roll and compact due to boundary limitation of a pipeline groove operation surface, repaired pavement is easy to sink after traffic is opened, and a joint of a repaired pavement and the existing pavement is easy to break under the action of external vehicle load, so that the service life of the pavement and the travelling comfort are seriously influenced.
Disclosure of Invention
The utility model aims to at least solve one of the technical problems in the prior art and provide an asphalt pavement repairing structure which can ensure the stability of a repaired pavement structure.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides an asphalt pavement repair structure, includes the slot of seting up on former road structure, former road structure is equipped with former road surface course, former road surface basic unit and former road bed from top to bottom in proper order, the slot is including being located the first slot segment in the former road bed, being located the second slot segment in former road surface course and being located the third slot segment in the former road surface basic unit, laid the pipeline in the first slot segment, be equipped with the self-compaction recycled concrete basic unit of pouring formation in the second slot segment, be equipped with well grain formula recycled asphalt concrete surface course and fine grain formula recycled asphalt concrete surface course from bottom to top in the third slot segment in proper order, from the compaction recycled concrete basic unit with be equipped with the grid between well grain formula recycled asphalt concrete surface course, the periphery and the former road surface basic unit fixed connection of grid.
Preferably, a filler is arranged in the first groove section, the filler is filled at the periphery of the pipeline, and the filler comprises crushed stone chips or medium coarse sand.
Preferably, a crushed stone cushion layer positioned at the top of the filler is arranged in the second groove section, the self-compacting recycled concrete base layer is positioned at the top of the crushed stone cushion layer, the thickness of the crushed stone cushion layer is 15-20 cm, and the thickness of the self-compacting recycled concrete base layer is 25-35 cm.
Preferably, the width of the third groove section is greater than the width of the second groove section, a fixing device is arranged between the grille and the original road surface base layer, the fixing device is located at the periphery of the grille, and the width of one side of the third groove section is greater than the width of one side of the second groove section by at least 200mm.
Preferably, the top surface of the fine-grained recycled asphalt concrete surface layer is flush with the top surface of the original pavement surface layer, the fixing device comprises a U-shaped nail, the closed end of the U-shaped nail is positioned at the top of the original pavement base layer, the open end of the U-shaped nail penetrates through the grille and stretches into the original pavement base layer, and the grille comprises a glass fiber grille.
Preferably, the top of the self-compacting recycled concrete base layer is provided with penetrating oil, the top surface of the self-compacting recycled concrete base layer is flush with the top surface of the original pavement base layer, and the periphery of the penetrating oil extends to the upper side of the original pavement base layer.
Preferably, a slurry seal layer is arranged at the top of the transparent oil, and the grid is arranged at the top of the slurry seal layer.
Preferably, a viscous layer oil is arranged between the medium-grain type recycled asphalt concrete surface layer and the fine-grain type recycled asphalt concrete surface layer.
Preferably, the self-compacting recycled concrete base layer includes old base layer waste generated by crushing an original roadbed.
Preferably, the medium-sized recycled asphalt concrete surface layer and the fine-sized recycled asphalt concrete surface layer each comprise old asphalt pavement waste generated by crushing an original pavement surface layer, the thickness of the medium-sized recycled asphalt concrete surface layer is 6cm, and the thickness of the fine-sized recycled asphalt concrete surface layer is 4cm.
One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the asphalt pavement repairing structure, the grids are paved at the lap joint positions of the repaired pavement and the original pavement, so that the periphery of the grids is fixedly connected with the original pavement base layer, the problems that the modulus difference of base materials is large, the repairing boundary is uncoordinated, the boundary condition of a construction site is limited and is not easy to compact are solved, urban congestion is reduced, the service life of the pavement and the travelling comfort are guaranteed, the asphalt pavement repairing structure is used, the repairing boundary is smooth and coordinated, the pavement is easy to roll and compact, the lap joint position of the repaired pavement and the existing pavement is difficult to damage after traffic is opened, the structure is stable, and the service life and the travelling comfort of the pavement are improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.
In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
In which fig. 1 shows a reference direction coordinate system of an embodiment of the present utility model, and the embodiment of the present utility model is described below with reference to the directions shown in fig. 1.
The embodiment of the utility model provides an asphalt pavement repairing structure, referring to fig. 1, comprising a groove 300 formed on an original pavement structure 200, wherein the original pavement structure 200 is sequentially provided with an original pavement surface layer 210, an original pavement base layer 220 and an original roadbed 230 from top to bottom, the groove 300 comprises a first groove section 310 positioned in the original pavement surface layer 210, a second groove section 320 positioned in the original pavement base layer 220 and a third groove section 330 positioned in the original roadbed 230, a pipeline 100 is paved in the first groove section 310, a self-compacting recycled concrete base layer 400 formed by pouring is arranged in the second groove section 320, a medium-grain recycled asphalt concrete surface layer 500 and a fine-grain recycled asphalt concrete surface layer 600 are sequentially arranged in the third groove section 330 from bottom to top, the grid 430 is arranged between the self-compacting recycled concrete base 400 and the medium-grain recycled asphalt concrete surface layer 500, the periphery of the grid 430 is fixedly connected with the original pavement base 220, the grid 430 is paved at the joint of the repaired pavement and the original pavement, so that the periphery of the grid 430 is fixedly connected with the original pavement base 220, the problems of large modulus difference of base materials, uncoordinated repairing boundaries, limited and poorly compacted construction site boundary conditions and the like are solved, urban congestion is reduced, the service life and the driving comfort of the pavement are ensured, the repairing boundaries are smooth and coordinated, rolling compaction is easy, the pavement is not easy to sink after traffic is opened, the joint of the repaired pavement and the existing pavement is not easy to break, the structure is firm, and the service life and the driving comfort of the pavement are improved.
As a preferred embodiment of the present utility model, referring to fig. 1, a filler 311 is provided in the first groove section 310, the filler 311 being filled in the outer circumference of the pipe 100, the filler 311 including crushed stone or medium coarse sand to secure the overall structural stability of the asphalt pavement repair structure.
Referring to fig. 1, a crushed stone cushion layer 321 positioned at the top of the filler 311 is arranged in the second groove section 320, the self-compacting recycled concrete base layer 400 is positioned at the top of the crushed stone cushion layer 321, the thickness of the crushed stone cushion layer 321 is 15-20 cm, and the thickness of the self-compacting recycled concrete base layer 400 is 25-35 cm.
As a preferred embodiment of the present utility model, referring to fig. 1, the third groove section 330 has a width greater than that of the second groove section 320, a fixing device 440 is provided between the grid 430 and the original pavement base 220, the fixing device 440 is located at the outer circumference of the grid 430, and one side of the third groove section 330 has a width greater than that of the second groove section 320 by at least 200mm, so as to ensure the overall stability of the asphalt pavement repair structure.
As a preferred embodiment of the present utility model, referring to fig. 1, the top surface of the fine-grained recycled asphalt concrete pavement layer 600 is flush with the top surface of the original pavement surface layer 210, and in some embodiments, the fixing means 440 comprises staples, the closed ends of which are positioned at the top of the original pavement base layer 220, the open ends of which extend into the original pavement base layer 220 through the grids 430, the grids 430 comprise fiberglass grids, the width of the grids 430 being greater than the width of the self-compacting recycled concrete base layer 400, the width of the fiberglass grids 430 being 200mm greater than each side of the width of the self-compacting recycled concrete base layer 400, the lateral spacing between adjacent staples 440 being 20m, and the longitudinal spacing being 100cm.
Preferably, referring to fig. 1, the top of the self-compacting recycled concrete base 400 is provided with a penetrating oil 410, the top of the self-compacting recycled concrete base 400 is flush with the top of the original pavement base 220, and the outer circumference of the penetrating oil 410 extends above the original pavement base 220.
Referring to fig. 1, a slurry seal 420 is provided on top of the strike-through oil 410, and a grid 430 is provided on top of the slurry seal 420.
In certain embodiments, referring to fig. 1, a mucilage layer of oil 510 is disposed between the medium grain recycled asphalt concrete facing 500 and the fine grain recycled asphalt concrete facing.
As a preferred embodiment of the present utility model, referring to fig. 1, the self-compacting recycled concrete base 400 includes old base waste generated by crushing an original roadbed, recycling of waste materials is achieved, the problems of occupied land and environmental pollution caused by waste of old materials are effectively solved, the self-compacting recycled concrete base 400 is recycled by using the old base waste, the self-compacting recycled concrete base layer formed by mixing has high fluidity, rapid early strength development and vibration-free self-compaction, the problems of poor limit conditions of a construction site and long base curing time are effectively solved, the labor required in a pouring process and a vibration process of the construction site are greatly reduced, quick pavement repair after pipeline laying is achieved, the base curing time is short, the consumption of asphalt, stone and the like is reduced, the occupied land and environmental pollution caused by waste of the excavated materials is avoided, traffic is timely opened, urban congestion is reduced, and the service life and travelling comfort of the pavement are ensured.
As a preferred embodiment of the present utility model, referring to fig. 1, both the medium-sized recycled asphalt concrete surface layer 500 and the fine-sized recycled asphalt concrete surface layer 600 include old asphalt pavement waste generated by crushing the original pavement surface layer 210, the thickness of the medium-sized recycled asphalt concrete surface layer 500 is 6cm, and the thickness of the fine-sized recycled asphalt concrete surface layer 600 is 4cm, thereby realizing recycling of waste materials and effectively solving the problems of land occupation and environmental pollution caused by waste of the old materials.
The construction method for repairing the pavement structure comprises the following steps:
s1: according to the designed position of the pipeline 100, the original road structure 200 is milled and crushed in layers, old asphalt pavement waste is generated through the crushed original pavement surface layer 210, old base layer waste is generated through the crushed original pavement base layer 220, it is understood that the original road structure 200 sequentially comprises the original pavement surface layer 210, the original pavement base layer 220 and the original roadbed 230 from top to bottom, and the original pavement comprises the original pavement surface layer 210 and the original pavement base layer 220;
s2: the method comprises the steps of downwards excavating a groove 300 for laying a pipeline 100 on the top surface of an original roadbed 230, laying the pipeline 100, filling the groove 300 to the top surface of the original roadbed 230 through a filler 311, wherein the filler 311 is positioned on the periphery of the pipeline 100, in other words, filling the filler 311 around the pipeline 100, paving a macadam cushion 321 on the top of the filler 311, positioning a self-compacting recycled concrete base layer 400 on the top of the macadam cushion 321, wherein the thickness of the macadam cushion 321 is 15-20 cm, the filler 311 comprises crushed stone scraps or medium coarse sand, the compactness of the filler 311 after filling is not less than 95%, the macadam cushion 321 is a graded crushed stone layer, in other words, the macadam cushion 321 is positioned between the filler 311 and the self-compacting recycled concrete base layer 400;
s3: crushing the old base layer waste material generated in the step S1 by a water washing and crushing machine, sieving, mixing into recycled aggregate, and then mixing with water, sand, cement and a water reducing agent at normal temperature to prepare self-compacting concrete;
s4: forming a self-compacting recycled concrete base layer 400 above the filler 311 by pouring self-compacting concrete, wherein the thickness of the self-compacting recycled concrete base layer 400 is 25-35 cm, after the self-compacting recycled concrete base layer 400 is cured for 5 hours, penetrating oil 410, a slurry seal 420 and a laying grid 430 are sequentially sprayed on the top of the self-compacting recycled concrete base layer 400 from bottom to top, in other words, penetrating oil 410 is sprayed on the upper part of the self-compacting recycled concrete base layer 400, a slurry seal 420 is sprayed on the upper part of the penetrating oil 410, a grid 430 is laid on the upper part of the slurry seal 420, the thickness of the slurry seal 420 is 6-10 mm, and the length of the longitudinal and transverse lap joint between the webs of the grid 430 is greater than 20cm;
s5: crushing and screening the old asphalt pavement waste generated in the step S1 into a first waste with small particle size and a second waste with large particle size, wherein the first waste with the particle size of more than or equal to 5mm and the second waste with the particle size of less than or equal to 5mm are specified;
s6: heating the first waste, adding a first aggregate, adding asphalt and a regenerant, mixing to form a medium-sized regenerated asphalt mixture, and paving the medium-sized regenerated asphalt mixture on the top of the self-compacting regenerated concrete base layer 400 to form a medium-sized regenerated asphalt concrete surface layer 500;
s7: and heating the second waste material, adding a second aggregate, adding asphalt and a regenerant, mixing to form a fine-grained reclaimed asphalt mixture, paving the fine-grained reclaimed asphalt mixture on the top of the medium-grained reclaimed asphalt concrete surface layer 500 to form a fine-grained reclaimed asphalt concrete surface layer 600, and finishing pavement repair.
In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present utility model is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and these equivalent modifications or substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. An asphalt pavement repair structure, which is characterized in that: including seting up the slot on former road structure, former road structure is equipped with former road surface course, former road surface basic unit and former road bed from top to bottom in proper order, the slot is including being located the first slot segment of former road surface course, being located the second slot segment in the former road surface basic unit and being located the third slot segment in the former road surface basic unit, laid the pipeline in the first slot segment, be equipped with the self-compaction recycled concrete basic unit of pouring formation in the second slot segment, be equipped with well grain formula recycled asphalt concrete surface course and fine grain formula recycled asphalt concrete surface course from bottom to top in proper order in the third slot segment, self-compaction recycled concrete basic unit with be equipped with the grid between the well grain formula recycled asphalt concrete surface course, the periphery and the former road surface basic unit fixed connection of grid.
2. The asphalt pavement repair structure according to claim 1, wherein: and a filler is arranged in the first groove section, the filler is filled at the periphery of the pipeline, and the filler comprises crushed stone scraps or medium coarse sand.
3. The asphalt pavement repair structure according to claim 2, wherein: the second groove section is internally provided with a broken stone cushion layer positioned at the top of the filler, the self-compacting recycled concrete base layer is positioned at the top of the broken stone cushion layer, the thickness of the broken stone cushion layer is 15-20 cm, and the thickness of the self-compacting recycled concrete base layer is 25-35 cm.
4. The asphalt pavement repair structure according to claim 1, wherein: the width of the third groove section is larger than that of the second groove section, a fixing device is arranged between the grille and the original road surface base layer, the fixing device is located on the periphery of the grille, and the width of one side of the third groove section is larger than that of one side of the second groove section by at least 200mm.
5. The asphalt pavement repair structure according to claim 4, wherein: the top surface of fine grained recycled asphalt concrete surface course with the top surface of former road surface course looks parallel and level, fixing device includes the staple, the blind end of staple is located the top of former road surface basic unit, the open end of staple passes the grid stretches into in the former road surface basic unit, the grid includes fine grid of glass.
6. The asphalt pavement repair structure according to claim 5, wherein: the top of the self-compaction recycled concrete base layer is provided with penetrating oil, the top surface of the self-compaction recycled concrete base layer is flush with the top surface of the original pavement base layer, and the periphery of the penetrating oil extends to the upper side of the original pavement base layer.
7. The asphalt pavement repair structure according to claim 6, wherein: the top of the penetrating layer oil is provided with a slurry seal layer, and the grid is arranged at the top of the slurry seal layer.
8. The asphalt pavement repair structure according to claim 1, wherein: and adhesive layer oil is arranged between the middle-grain type recycled asphalt concrete surface layer and the fine-grain type recycled asphalt concrete surface layer.
9. The asphalt pavement repair structure according to claim 1, wherein: the self-compacting recycled concrete base layer includes old base layer waste generated by crushing the original roadbed.
10. The asphalt pavement repair structure according to claim 1, wherein: the middle-grain type recycled asphalt concrete surface layer and the fine-grain type recycled asphalt concrete surface layer both comprise old asphalt pavement waste generated by crushing the original pavement surface layer, the thickness of the middle-grain type recycled asphalt concrete surface layer is 6cm, and the thickness of the fine-grain type recycled asphalt concrete surface layer is 4cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321241088.7U CN219637603U (en) | 2023-05-22 | 2023-05-22 | Asphalt pavement repairing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321241088.7U CN219637603U (en) | 2023-05-22 | 2023-05-22 | Asphalt pavement repairing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219637603U true CN219637603U (en) | 2023-09-05 |
Family
ID=87810649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321241088.7U Active CN219637603U (en) | 2023-05-22 | 2023-05-22 | Asphalt pavement repairing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219637603U (en) |
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2023
- 2023-05-22 CN CN202321241088.7U patent/CN219637603U/en active Active
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