CN220468534U - Road is pieced together wide section and is prevented flashing bituminous pavement structure - Google Patents
Road is pieced together wide section and is prevented flashing bituminous pavement structure Download PDFInfo
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- CN220468534U CN220468534U CN202321406303.4U CN202321406303U CN220468534U CN 220468534 U CN220468534 U CN 220468534U CN 202321406303 U CN202321406303 U CN 202321406303U CN 220468534 U CN220468534 U CN 220468534U
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- 239000002344 surface layer Substances 0.000 claims abstract description 74
- 239000010410 layer Substances 0.000 claims abstract description 60
- 239000010426 asphalt Substances 0.000 claims abstract description 46
- 239000011800 void material Substances 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model provides a road width-splicing section anti-oil-flooding asphalt pavement structure, which belongs to the technical field of highway engineering and comprises an original pavement and a width-splicing pavement, wherein the top of a wear surface layer of the width-splicing pavement is flush with the upper surface layer of the original pavement, the middle surface layer of the width-splicing pavement is flush with the bottom of the middle surface layer of the original pavement, the lower surface layer of the width-splicing pavement is spliced with the lower surface layer of the original pavement, a base layer of the width-splicing pavement is spliced with the base layer of the original pavement, and the thickness of the wear surface layer of the width-splicing pavement is 1.8-2.5 cm and the void ratio is 8-12%. The wide pavement abrasion surface layer is thin in thickness, the asphalt amount per unit area is low, the possibility of oil-bleeding is fundamentally reduced, and the large-gap structure provides a larger storage space for free asphalt, so that the free asphalt is prevented from being moved upwards to the surface to generate oil-bleeding.
Description
Technical Field
The utility model belongs to the technical field of highway engineering, and particularly relates to a road widening section anti-flooding asphalt pavement structure.
Background
Along with the gradual increase of traffic volume, more and more roads face the requirement of widening transformation and are limited by various conditions, at the present stage, most roads are widened and transformed in a two-side widening mode, widening sections are positioned on the outer sides of the roads and are mainly used for heavy-duty vehicles such as large trucks, buses and the like to drive, on the other hand, continuous weather frequently occurs, particularly under the continuous high-temperature, high-temperature and heavy-duty actions, free asphalt in asphalt mixture upwards migrates to road surfaces to form an oil-flooding phenomenon, and road surface oil-flooding also becomes one of main diseases.
In general, asphalt pavement is mainly caused by oil-bleeding in high-temperature seasons, asphalt is heated and swelled, the compactness of the mixture is insufficient, asphalt cement is extruded to the road surface by secondary compaction of load, meanwhile, asphalt films on the aggregate surface are peeled off to become free asphalt under the repeated action of driving load and dynamic pressure water flushing, and the free asphalt is forced to migrate to the upper part under the action of water, so that the upper part of the surface layer is flooded and the bottom is loose. Asphalt pavement oil-flooding greatly reduces road surface skid resistance, the asphalt content of an upper layer is increased by the pavement oil-flooding, the asphalt content of a middle layer and a lower layer is reduced, the low-temperature crack resistance, fatigue resistance and water stability of the middle layer and the lower layer are reduced, and pavement pits, looseness and the like are damaged, so that the service life of the pavement and the driving safety are seriously influenced. Therefore, the characteristics of environment, climate and traffic load of the wide road are combined, and the road structure with the wide road splicing section resistant to oil-bleeding is provided, so that free asphalt of the high-temperature heavy-load left-right lower asphalt road surface is effectively restrained from being generated and moved upwards, oil-bleeding diseases are avoided, and driving safety and comfortableness are guaranteed, and durability of the road surface is guaranteed.
Disclosure of Invention
Aiming at the problem of road surface oil-bleeding of a wide-section road under the action of high temperature and heavy load, the utility model splices the wide-section road surface with the wide-section road surface by steps, wherein the surface layer of the wide-section road surface is an ultrathin large-gap wearing layer, the thickness is thin, the asphalt amount per unit area is small, the gap is large and more space is freely provided, the middle surface layer is made of grouting asphalt mixture, asphalt is wrapped by cement paste and is in a stable state, and meanwhile, the compactness is high, and the upper asphalt layer and the lower asphalt layer are prevented from being transferred, so that the anti-oil-bleeding asphalt road surface structure is formed. The technical problems to be solved by the utility model are realized by adopting the following technical scheme:
a road-widening-section anti-flooding asphalt pavement structure, comprising:
the original road surface comprises an original road surface upper layer, an original road surface middle layer, an original road surface lower layer, an original road surface base layer and an original road surface subbase layer from top to bottom in sequence;
the spliced wide pavement is spliced with the original pavement, and comprises a spliced wide pavement wearing surface layer, a spliced wide pavement middle surface layer, a spliced wide pavement transition layer, a spliced wide pavement lower surface layer, a spliced wide pavement base layer and a spliced wide pavement base layer from top to bottom in sequence;
the top of the wearing surface layer of the spliced wide pavement is flush with the upper surface layer of the original pavement, the middle surface layer of the spliced wide pavement is flush with the bottom of the middle surface layer of the original pavement, the lower surface layer of the spliced wide pavement is spliced with the lower surface layer of the original pavement, and the base layer of the spliced wide pavement is spliced with the base layer of the original pavement.
The utility model further discloses the following technology:
preferably, the splicing steps between the spliced wide pavement and the original pavement are divided, the width of the step spliced by the middle surface layer of the spliced wide pavement and the bottom of the middle surface layer of the original pavement is 10-15cm, the width of the step spliced by the lower surface layer of the spliced wide pavement and the lower surface layer of the original pavement is 10-15cm, and the width of the step spliced by the basic layer of the spliced wide pavement and the basic layer of the original pavement is 20-30cm.
Preferably, the thickness of the abrasion surface layer of the spliced wide pavement is 1.8-2.5 cm, and the void ratio is 8-12%.
Preferably, the middle surface layer of the spliced wide pavement is 6-10 cm of grouting asphalt mixture, the grouting slurry is high-fluidity cement slurry, and the grouting slurry plumpness is more than 85%.
Preferably, the sum of the thicknesses of the wear surface layer of the spliced wide pavement and the middle surface layer of the spliced wide pavement is equal to the sum of the thicknesses of the middle surface layer and the upper surface layer of the original pavement.
Preferably, the spliced wide pavement transition layer comprises a modified emulsified asphalt layer at the bottom and a polyvinyl alcohol fiber layer at the upper part.
The beneficial effects of the utility model are as follows:
the road wide-section anti-oil-bleeding asphalt pavement structure has the advantages that the thickness of the worn surface layer of the wide-section pavement is thin, the asphalt amount per unit area is low, the oil-bleeding possibility is fundamentally reduced, and the large-gap structure provides a larger storage space for free asphalt, so that the free asphalt is prevented from moving upwards to the surface to generate oil bleeding.
According to the road width-spliced section anti-flooding asphalt pavement structure, the middle surface layer of the width-spliced pavement adopts the grouting asphalt mixture, cement slurry is filled to wrap asphalt, so that the asphalt in the mixture is in a stable state, the whole asphalt mixture is high in strength and good in compactness, the upper asphalt layer and the lower asphalt layer are isolated from exchanging and transferring, and the flooding is effectively avoided.
According to the road widening section anti-oil-flooding asphalt pavement structure, the large-gap surface layer structure is adopted to improve the skid resistance of the pavement surface layer, the high-strength middle surface layer is adopted to improve the high-temperature resistance, and the step arrangement between the widening pavement and the original pavement is adopted to improve the integrity of the pavement structure, so that the service function and the service life of the pavement are improved at an angle.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of the present utility model;
in the figure: 11. widening the wearing surface layer of the pavement; 12. widening the middle surface layer of the pavement; 13. a road surface transition layer is spliced and widened; 14. widening the pavement lower surface layer; 15. widening the pavement base layer; 16. widening the pavement subbase layer; 21. an upper layer of the original road surface; 22. an original pavement middle surface layer; 23. an original pavement lower layer; 24. an original road surface base layer; 25. and an original pavement subbase layer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1: the embodiment provides a road makeup section anti-oil-bleeding bituminous pavement structure, includes:
the original road surface comprises a 4cm original road surface layer 21, an original 6cm road surface middle surface layer 22, an 8cm original road surface lower surface layer 23, a 36cm original road surface base layer 24 and an 18cm original road surface subbase layer 25 from top to bottom in sequence;
the spliced wide pavement is spliced with the original pavement, and comprises a 2cm spliced wide pavement abrasion surface layer 11, an 8cm spliced wide pavement middle surface layer 12, a spliced wide pavement transition layer 13, an 8cm spliced wide pavement lower surface layer 14, a 36cm spliced wide pavement base layer 15 and an 18cm spliced wide pavement base layer 16 from top to bottom in sequence;
the top of the spliced wide pavement abrasion surface layer 11 is flush with the original pavement upper surface layer 21, the spliced wide pavement middle surface layer 12 is flush with the bottom of the original pavement middle surface layer 22, the spliced wide pavement lower surface layer 14 is spliced with the original pavement lower surface layer 23, and the spliced wide pavement base layer 15 is spliced with the original pavement base layer 24.
The splicing steps between the spliced wide pavement and the original pavement are divided, the width of the step spliced by the bottom of the spliced wide pavement middle surface layer 12 and the bottom of the original pavement middle surface layer 22 is 10cm, the width of the step spliced by the spliced wide pavement lower surface 14 and the original pavement lower surface layer 23 is 15cm, and the width of the step spliced by the spliced wide pavement base layer 15 and the original pavement base layer 24 is 25cm.
The maximum grain diameter of the wearing surface layer 11 of the spliced wide pavement is 4.75mm, and the void ratio is 10%.
The middle surface layer 12 of the spliced wide pavement is a grouting asphalt mixture, the void ratio of the matrix asphalt mixture is 18%, the fluidity of grouting cement mortar is 14s, and the grouting fullness of cement mortar is 93%.
The wide road surface transition layer 13 comprises modified emulsified asphalt and polyvinyl alcohol fiber, and is spread with 0.5L/m 2 After the emulsified asphalt is modified, a layer of spreading amount of 0.15kg/m is uniformly covered 2 Polyvinyl alcohol fibers.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present utility model, features are not necessarily independently present unless explicitly stated or defined. The foregoing description and description contain the basic principles, main features and advantages of the present utility model. It should be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, which are only preferred embodiments of the present utility model, and not intended to limit the present utility model as the only options. The utility model may be further modified and optimized within the spirit and scope of the utility model as defined by the appended claims, along with the full scope of equivalents to which such modifications and optimization are to be entitled.
Claims (5)
1. The utility model provides a wide section anti-oil-bleeding bituminous pavement structure is pieced together to road which characterized in that includes:
the original road surface comprises an original road surface upper layer, an original road surface middle layer, an original road surface lower layer, an original road surface base layer and an original road surface subbase layer from top to bottom in sequence;
the spliced wide pavement is spliced with the original pavement, and comprises a spliced wide pavement wearing surface layer, a spliced wide pavement middle surface layer, a spliced wide pavement transition layer, a spliced wide pavement lower surface layer, a spliced wide pavement base layer and a spliced wide pavement base layer from top to bottom in sequence;
the top of the wearing surface layer of the spliced wide pavement is flush with the upper surface layer of the original pavement, the middle surface layer of the spliced wide pavement is flush with the bottom of the middle surface layer of the original pavement, the lower surface layer of the spliced wide pavement is spliced with the lower surface layer of the original pavement, and the base layer of the spliced wide pavement is spliced with the base layer of the original pavement.
2. The structure of claim 1, wherein the step width of the step formed by the middle surface layer of the spliced wide pavement and the bottom of the middle surface layer of the original pavement is 10-15cm, the step width of the step formed by the lower surface layer of the spliced wide pavement and the lower surface layer of the original pavement is 10-15cm, and the step width of the step formed by the base layer of the spliced wide pavement and the base layer of the original pavement is 20-30cm.
3. The road widening section anti-flooding asphalt pavement structure according to claim 1, wherein the thickness of the wearing surface layer of the widening pavement is 1.8-2.5 cm, and the void ratio is 8-12%.
4. The structure of claim 1, wherein the sum of the thicknesses of the wear surface layer and the middle surface layer of the spliced wide pavement is equal to the sum of the thicknesses of the middle surface layer and the upper surface layer of the original pavement.
5. The wide-road-segment anti-flooding asphalt pavement structure of claim 1, wherein the wide-road-segment transition layer comprises a bottom modified emulsified asphalt layer and an upper polyvinyl alcohol fiber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406303.4U CN220468534U (en) | 2023-06-05 | 2023-06-05 | Road is pieced together wide section and is prevented flashing bituminous pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321406303.4U CN220468534U (en) | 2023-06-05 | 2023-06-05 | Road is pieced together wide section and is prevented flashing bituminous pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220468534U true CN220468534U (en) | 2024-02-09 |
Family
ID=89775542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321406303.4U Active CN220468534U (en) | 2023-06-05 | 2023-06-05 | Road is pieced together wide section and is prevented flashing bituminous pavement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220468534U (en) |
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2023
- 2023-06-05 CN CN202321406303.4U patent/CN220468534U/en active Active
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