Asphalt pavement fiber reinforced thin overlay
By adopting a multi-layer structure and a combination of specific materials in the fiber-reinforced thin-layer cover of asphalt pavement, the problems of fiber decay and safety hazards are solved, and the effect of improving tensile resistance and extending service life is achieved, ensuring driving safety.
Patent Information
- Application Number
- CN202420209446.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-29
AI Technical Summary
In the existing asphalt pavement fiber reinforced thin layer cover, waste brown wire and waste metal reinforced fibers are prone to decay and cause scratches on the tires during long-term use, which poses safety hazards and is difficult to ensure the lateral tensile performance of the thin layer cover and Prevent surface wrinkles.
The structure of coarse stone layer, first reinforced mesh, fine stone layer, multi-layer asphalt layer and asphalt linoleum layer is adopted. The tensile performance and hardness are improved through the mixed asphalt layer of rubber reinforced mesh, glass fiber reinforced mesh and fine stone, and the tensile resistance and hardness are improved in the fine Asphalt slurry and fine rubber particles are added to the stone and asphalt layers to enhance the curing and buffering effect.
It effectively extends the service life of the reinforcement fiber, improves the lateral tensile performance of the thin-layer cover, prevents surface damage and wrinkles, reduces the degree of road damage, and ensures driving safety.
Smart Images
Figure CN222275132U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of asphalt pavement, in particular to an asphalt pavement fiber-reinforced thin-layer overlay. Background Art
[0002] With the continuous development of economy and the continuous improvement of infrastructure, roads are a very important item among them, especially asphalt roads. The use of asphalt mixed with gravel and other auxiliary materials can effectively improve the service life of roads. The prior art discloses an asphalt pavement fiber-reinforced thin layer overlay with an authorization announcement number of CN216474316U, including a foundation, a waste stone layer is provided on the upper layer of the foundation, a leak-proof layer is laid on the upper end of the waste stone layer, a first buffer deformation layer is laid on the upper end of the leak-proof layer, a thermal expansion and contraction layer is laid on the upper layer of the first buffer deformation layer, a second buffer deformation layer is laid on the thermal expansion and contraction layer, a gravel layer is laid on the upper layer of the second buffer deformation layer, and a first asphalt layer is laid on the upper part of the gravel layer. This pavement structure is internally provided with a thermal expansion and contraction layer, which utilizes the thermal expansion and contraction capabilities of the material in the thermal expansion and contraction layer to control the drainage speed. In summer, when the temperature is high, if waste aluminum products are used, the aluminum products will expand and the gaps will shrink, which can reduce the penetration rate of moisture on the pavement, increase the time the pavement remains moist, and better maximize the watering effect, thereby expanding the protective effect on the pavement structure.
[0003] However, it was found during use that the above design uses waste palm fiber mats and waste metal as reinforcing fibers. The palm fiber is prone to decay during long-term use, making it difficult to ensure the lateral tensile performance of the thin layer of cover. At the same time, the waste metal is prone to scratching the tires after the thin layer of cover is damaged and exposed, posing a safety hazard. Utility Model Content
[0004] In view of the above problems, the purpose of the utility model is to provide a fiber-reinforced thin layer cover for asphalt pavement, which can effectively extend the service life of the reinforcing fibers, effectively ensure the lateral tensile performance of the thin layer cover, effectively avoid the problem of wrinkling on the surface of the thin layer cover, and at the same time prevent the reinforced fibers from being exposed and scratching the tires after the surface of the thin layer cover is damaged, which is conducive to ensuring driving safety and solving the problems raised in the above-mentioned background technology.
[0005] To achieve the above objectives, the utility model adopts the following technical solution: a fiber-reinforced thin layer overlay for an asphalt pavement, comprising a coarse stone layer, a first reinforcing mesh is provided on the top of the coarse stone layer, a fine stone layer is provided on the top of the first reinforcing mesh, some of the fine stones in the fine stone layer are within the grid of the first reinforcing mesh, a first asphalt layer is provided on the top of the fine stone layer, an asphalt felt layer is laid on the top of the first asphalt layer, and a second asphalt layer is laid on the top of the asphalt felt layer.
[0006] To prevent the thin overlay surface from being damaged and extending downward:
[0007] As a further improvement of the above technical solution: the second asphalt layer also includes a third asphalt layer, a second reinforcing mesh and a fourth asphalt layer, the third asphalt layer is laid on the top of the asphalt felt layer, the second reinforcing mesh is laid on the top of the third asphalt layer, and the fourth asphalt layer is laid on the top of the second reinforcing mesh.
[0008] The beneficial effect of this improvement is that by such an arrangement, the problem of the thin layer of overlay surface being damaged and extending downward can be effectively prevented, thereby effectively reducing the degree of road damage and facilitating later maintenance.
[0009] To improve the resistance to lateral pulling:
[0010] As a further improvement of the above technical solution: the material of the first reinforcement net is rubber, and nylon reinforcement ribs are arranged inside the first reinforcement net.
[0011] The beneficial effect of this improvement is that, by such an arrangement, the service life of the first reinforcing net is extended and the resistance to lateral pulling is improved.
[0012] To prevent the stones from being too loose:
[0013] As a further improvement of the above technical solution: an asphalt slurry solidified layer is sprayed on the fine stone layer.
[0014] The beneficial effect of this improvement is that by such an arrangement, it is easy to initially solidify the fine stone layer and prevent the stones from being too loose.
[0015] In order to effectively ensure the hardness of the asphalt layer:
[0016] As a further improvement of the above technical solution: fine gravel is mixed in the first asphalt layer, the second asphalt layer, the third asphalt layer and the fourth asphalt layer.
[0017] The beneficial effect of this improvement is that by such an arrangement, the hardness of the asphalt layer can be effectively guaranteed.
[0018] In order to extend the service life of the second reinforcement mesh:
[0019] As a further improvement of the above technical solution: the material of the second reinforcing mesh is glass fiber.
[0020] The beneficial effect of this improvement is that by such an arrangement, the service life of the second reinforcing net can be extended.
[0021] To improve the cushioning effect of the asphalt felt layer:
[0022] As a further improvement of the above technical solution: fine rubber particles are uniformly mixed in the first asphalt layer.
[0023] The beneficial effect of this improvement is that by providing fine rubber particles, the elasticity of the first asphalt layer can be effectively enhanced, thereby improving the buffering effect on the asphalt felt layer.
[0024] The beneficial effects of the utility model are: through a simple anti-lateral crushing and pulling structure, the service life of the reinforcing fiber can be effectively extended, and the lateral tensile performance of the thin layer cover can be effectively guaranteed, and the problem of wrinkling on the surface of the thin layer cover can be effectively avoided. At the same time, the problem of the reinforcing fiber being exposed and scratching the tire after the surface of the thin layer cover is damaged can be prevented, which is beneficial to ensuring driving safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0026] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;
[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the first reinforcing net in the utility model;
[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the second reinforcing net in the utility model.
[0029] In the figure: 1, coarse stone layer; 2, first reinforcing mesh; 3, fine stone layer; 4, first asphalt layer; 5, asphalt felt layer; 6, second asphalt layer; 7, third asphalt layer; 8, second reinforcing mesh; 9, fourth asphalt layer. DETAILED DESCRIPTION
[0030] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.
[0031] like Figure 1-4As shown, a fiber-reinforced thin layer overlay of an asphalt pavement comprises a coarse stone layer 1, a first reinforcing mesh 2 is arranged on the top of the coarse stone layer 1, a fine stone layer 3 is arranged on the top of the first reinforcing mesh 2, some of the fine stones in the fine stone layer 3 are in the grid of the first reinforcing mesh 2, a first asphalt layer 4 is arranged on the top of the fine stone layer 3, an asphalt felt layer 5 is laid on the top of the first asphalt layer 4, and a second asphalt layer 6 is laid on the top of the asphalt felt layer 5. Through a simple anti-lateral rolling and pulling structure, the service life of the reinforcing fiber can be effectively extended, and the lateral tensile performance of the thin layer overlay can be effectively guaranteed, the problem of wrinkling on the surface of the thin layer overlay can be effectively avoided, and the problem of reinforcing fibers being exposed and scratching tires after the surface of the thin layer overlay is damaged can be prevented, which is beneficial to ensuring driving safety. The second asphalt layer 6 also includes a third asphalt layer 7, a second reinforcing mesh 8 and a fourth asphalt layer 9, the third asphalt layer 7 is laid on the top of the asphalt felt layer 5, the second reinforcing mesh 8 is laid on the top of the third asphalt layer 7, and the fourth asphalt layer 9 is laid on the second The top of the reinforcing mesh 8 is arranged in this way, so as to effectively prevent the problem of the thin layer of the cover surface being damaged and extending downward, thereby effectively reducing the degree of road damage and facilitating later maintenance. The first reinforcing mesh 2 is made of rubber, and nylon reinforcing ribs are arranged inside the first reinforcing mesh 2. This arrangement can easily extend the service life of the first reinforcing mesh 2 and improve the resistance to lateral pulling. The fine stone layer 3 is sprayed with an asphalt slurry solidification layer. This arrangement can facilitate the preliminary solidification of the fine stone layer 3 to prevent the stones from being too loose. The first asphalt layer 4, the second asphalt layer 6, the third asphalt layer 7 and the fourth asphalt layer 9 are all mixed with fine stones. This arrangement can effectively ensure the hardness of the asphalt layer. The second reinforcing mesh 8 is made of glass fiber. This arrangement can easily extend the service life of the second reinforcing mesh 8. Fine rubber particles are evenly mixed in the first asphalt layer 4. By setting the fine rubber particles, the elasticity of the first asphalt layer 4 can be effectively enhanced and the buffering effect on the asphalt felt layer 5 can be improved.
[0032] The working principle of the utility model is as follows: during paving, a coarse stone layer 1 is first laid on the roadbed, and then a first reinforcing mesh 2 is laid to enhance the resistance to lateral rolling pressure and prevent wrinkles on the surface of the thin overlay. Then a fine stone layer 3 is laid on the first reinforcing mesh 2 and an asphalt slurry reinforcement layer is sprayed, and the fine stone layer 3 is initially cured. Then a first asphalt layer 4 is laid on the fine stone layer 3 to play a buffering role and prevent the asphalt felt layer 5 from being scratched by stones. Then the asphalt felt layer 5 is laid on the first asphalt layer 4, and then a third asphalt felt layer is laid on the top of the asphalt felt layer 5. The asphalt layer 7 is then laid, and the second reinforcing mesh 8 is then laid on the top of the third asphalt layer 7, and finally the fourth asphalt layer 9 is laid on the second reinforcing mesh 8. The second reinforcing mesh 8 is used to strengthen the second asphalt layer 6 to prevent surface damage from extending downward. Through such an arrangement, the service life of the reinforcing fiber can be effectively extended, and the lateral tensile performance of the thin layer cover can be effectively guaranteed, and the problem of wrinkling on the surface of the thin layer cover can be effectively avoided. At the same time, the problem of reinforcing fibers being exposed and scratching tires after the surface of the thin layer cover is damaged can be prevented, which is beneficial to ensuring driving safety.
[0033] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.
[0034] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.
Claims
1. A fiber-reinforced thin layer overlay for an asphalt pavement, comprising a coarse stone layer (1), characterized in that: A first reinforcing mesh (2) is provided on the top of the coarse stone layer (1), a fine stone layer (3) is provided on the top of the first reinforcing mesh (2), a portion of the fine stones in the fine stone layer (3) is located within the mesh of the first reinforcing mesh (2), a first asphalt layer (4) is provided on the top of the fine stone layer (3), an asphalt felt layer (5) is laid on the top of the first asphalt layer (4), and a second asphalt layer (6) is laid on the top of the asphalt felt layer (5).
2. The fiber-reinforced thin layer overlay of asphalt pavement according to claim 1, characterized in that: The second asphalt layer (6) further comprises a third asphalt layer (7), a second reinforcing mesh (8) and a fourth asphalt layer (9), wherein the third asphalt layer (7) is laid on top of the asphalt felt layer (5), the second reinforcing mesh (8) is laid on top of the third asphalt layer (7), and the fourth asphalt layer (9) is laid on top of the second reinforcing mesh (8).
3. The fiber-reinforced thin layer overlay of asphalt pavement according to claim 1, characterized in that: The material of the first reinforcement net (2) is rubber, and nylon reinforcement ribs are arranged inside the first reinforcement net (2).
4. The fiber-reinforced thin layer overlay of asphalt pavement according to claim 1, characterized in that: A solidified asphalt slurry layer is sprayed on the fine stone layer (3).
5. The fiber-reinforced thin layer overlay of asphalt pavement according to claim 2, characterized in that: Fine stones are mixed in the first asphalt layer (4), the second asphalt layer (6), the third asphalt layer (7) and the fourth asphalt layer (9).
6. The fiber-reinforced thin layer overlay of asphalt pavement according to claim 2, characterized in that: The material of the second reinforcing mesh (8) is glass fiber.
7. The fiber-reinforced thin layer overlay of asphalt pavement according to claim 2, characterized in that: The first asphalt layer (4) is uniformly mixed with fine rubber particles.