Antiskid concrete pavement structure
By laying a polymer cement layer and a gravel anti-slip layer on the cement concrete pavement, and asphalt concrete raised ribs, the problem of insufficient anti-slip ability of the cement concrete pavement is solved, and higher anti-slip performance and safer driving conditions are achieved.
Patent Information
- Application Number
- CN202422127581.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Because of its low anti-slip ability, cement concrete pavement limits its application in highways, and the existing anti-slip structures are prone to failure due to sediment accumulation and wear after long-term use.
An anti-slip concrete pavement structure is adopted, including cement concrete surface layer, polymer cement layer and gravel anti-slip layer, and asphalt concrete convex ribs are laid on the surface of the pavement. The anti-slip layer of gravel is bonded through polymer cement to increase the roughness of the road surface. At the same time, the asphalt concrete convex ribs are set to change the texture structure of the road surface, so that the pavement surface is slightly arched and friction is increased.
It improves the anti-slip performance of the road surface, enhances the friction coefficient, reduces the possibility of slippery road surface, ensures the safety of vehicle driving, and extends the life of the anti-slip structure.
Smart Images
Figure CN223033776U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of road surface anti-skid, in particular to an anti-skid concrete road surface structure. Background Technique
[0002] Due to its advantages such as high strength, good stability, long service life and low maintenance cost, cement concrete pavement is widely used in highway construction in China. However, compared with asphalt pavement, its surface anti-skid ability is low and the driving restlessness is large, which limits its application in expressways.
[0003] The larger the lateral force coefficient of the highway pavement, the better the anti-skid performance and the shorter the braking distance of the vehicle when braking. The existing highway pavements are mainly divided into two types: asphalt pavement and cement concrete pavement. The lateral force coefficient of asphalt pavement is relatively large, so it is widely used in expressway construction. If the cement concrete pavement is not treated, its anti-skid ability is significantly lower than that of asphalt pavement. To improve the anti-skid ability of cement concrete pavement, the usual method is to groove the cement concrete pavement.
[0004] After the anti-skid structure of the existing pavement is used for a long time, the anti-skid grooves will be filled with sediment, and at the same time, the edges of the anti-skid grooves will be worn and become smooth, greatly reducing the life and effect of the anti-skid grooves. Content of the Utility Model
[0005] The utility model provides an anti-skid concrete road surface structure to solve the problems in the background technique.
[0006] To achieve the above object, the utility model provides the following technical solution: an anti-skid concrete road surface structure, including a subgrade, a lime stabilized soil base is laid on the subgrade, a cement stabilized macadam base is laid on the lime stabilized soil base, a cement stabilized gravel base is laid on the cement stabilized macadam base, a cement concrete surface layer is laid on the cement stabilized gravel base, a polymer binder layer is laid on the cement concrete surface layer, a crushed stone anti-skid layer and asphalt concrete raised ribs are laid on the polymer binder layer, and the asphalt concrete raised ribs are evenly distributed on the polymer binder layer.
[0007] Further, longitudinal joints are opened on the cement concrete surface layer, the polymer binder layer and the crushed stone anti-skid layer, and the longitudinal joints among the three correspond to each other.
[0008] Further, transverse joints are opened on the cement concrete surface layer, the polymer binder layer and the crushed stone anti-skid layer, and the transverse joints among the three correspond to each other.
[0009] Further, the transverse joints are evenly distributed on the cement concrete surface layer, the polymer binder layer and the crushed stone anti-skid layer.
[0010] Further, the width of the asphalt concrete raised ribs is the same as that of the polymer binder layer, and the asphalt concrete raised ribs are embedded in the crushed stone anti-slip layer.
[0011] Further, the top surface of the asphalt concrete raised ribs protrudes from the top surface of the crushed stone anti-slip layer, and the protruding height ranges from 1 mm to 2.5 mm.
[0012] Compared with the prior art, the utility model provides an anti-slip concrete pavement structure, which has the following beneficial effects:
[0013] For this anti-slip concrete pavement structure, a layer of polymer binder is covered on the surface of the cement concrete surface layer, and a layer of crushed stone anti-slip layer is bonded through the polymer binder, which can increase the roughness of the road surface, thereby improving the friction coefficient and enhancing the anti-slip performance of the road surface. At the same time, the provided asphalt concrete raised ribs can change the texture structure of the road surface, make the road surface slightly arched, increase the friction of the road surface, reduce the possibility of the road surface being slippery, and ensure the safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural diagram of the utility model;
[0015] Figure 2 is a schematic cross-sectional diagram of the utility model;
[0016] Figure 3 is an exploded view of the utility model.
[0017] In the figure: 1, subgrade; 2, lime stabilized soil base; 3, water-stabilized crushed stone base; 4, water-stabilized gravel base; 5, cement concrete surface layer; 6, polymer binder layer; 7, crushed stone anti-slip layer; 8, asphalt concrete raised ribs; 9, longitudinal joint; 10, transverse joint. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.
[0019] Please refer to Figures 1-3, the utility model discloses an anti-slip concrete pavement structure, including a subgrade layer 1, on which a lime stabilized soil base layer 2 is laid, on which a water stable crushed stone base layer 3 is laid, on which a water stable sand gravel base layer 4 is laid, on which a cement concrete surface layer 5 is laid, on which a polymer binder layer 6 is laid, on which a crushed stone anti-slip layer 7 and asphalt concrete raised ribs 8 are laid, and the asphalt concrete raised ribs 8 are evenly distributed on the polymer binder layer 6. A layer of polymer binder is covered on the surface of the cement concrete surface layer 5, and a crushed stone anti-slip layer 7 is bonded through the polymer binder, which can increase the roughness of the road surface, thereby improving the friction coefficient and enhancing the anti-slip performance of the road surface. At the same time, the provided asphalt concrete raised ribs 8 can change the texture structure of the road surface, make the road surface slightly arched, increase the friction of the road surface, reduce the possibility of the road surface being slippery, and ensure the safety of vehicle driving.
[0020] Specifically, longitudinal joints 9 are opened on the cement concrete surface layer 5, the polymer binder layer 6 and the crushed stone anti-slip layer 7, and the longitudinal joints 9 among the three correspond to each other.
[0021] In this implementation scheme, during the construction of the concrete pavement, since the cement will expand and contract during the setting process or use process, in order to avoid the damage caused by this physical change, it is necessary to cut joints at certain intervals on the road surface. This can induce and control the position and direction of the shrinkage cracks of the concrete pavement, thereby preventing cracks from appearing on the cement ground and ensuring the service life of the cement ground.
[0022] Specifically, transverse joints 10 are opened on the cement concrete surface layer 5, the polymer binder layer 6 and the crushed stone anti-slip layer 7, and the transverse joints 10 among the three correspond to each other.
[0023] In this implementation scheme, the transverse joints 10, like the longitudinal joints 9, can adapt to the thermal deformation of the concrete and avoid the cracking of the road surface caused by temperature changes.
[0024] Specifically, the transverse joints 10 are evenly distributed on the cement concrete surface layer 5, the polymer binder layer 6 and the crushed stone anti-slip layer 7.
[0025] In this implementation scheme, the above longitudinal joints 9 and transverse joints 10 are both provided to prevent the expansion of road surface cracks and ensure the service life of the cement concrete ground.
[0026] Specifically, the width of the asphalt concrete raised ribs 8 is the same as that of the polymer binder layer 6, and the asphalt concrete raised ribs 8 are buried in the crushed stone anti-slip layer 7.
[0027] In this implementation scheme, the polymer binder is a new type of cement material, which is a mixture composed of polymer resin, filler, hardener, additives, etc. It is widely used in fields such as repair, reinforcement, and waterproofing. It is characterized by high bonding strength, elastic modulus, and wear resistance, which can improve the durability and performance of repair materials. At the same time, it also has good chemical stability and weather resistance, and can be applied to projects under various environmental conditions.
[0028] Specifically, the top surface of the asphalt concrete raised rib 8 protrudes above the top surface of the crushed stone anti-slip layer 7, and the protruding height range is between 1 mm and 2.5 mm.
[0029] In this implementation scheme, the set asphalt concrete raised rib 8 can change the texture structure of the road surface, make the road surface slightly arched, increase the friction of the road surface, and reduce the possibility of the road surface being slippery.
[0030] During use, a layer of polymer binder is covered on the surface of the cement concrete surface layer 5, and a layer of crushed stone anti-slip layer 7 is bonded through the polymer binder, which can increase the roughness of the road surface, thereby increasing the friction coefficient and enhancing the anti-slip performance of the road surface. At the same time, the set asphalt concrete raised rib 8 can change the texture structure of the road surface, make the road surface slightly arched, increase the friction of the road surface, and reduce the possibility of the road surface being slippery, ensuring the safety of vehicle driving.
[0031] In summary, for this anti-slip concrete road surface structure, a layer of polymer binder is covered on the surface of the cement concrete surface layer 5, and a layer of crushed stone anti-slip layer 7 is bonded through the polymer binder, which can increase the roughness of the road surface, thereby increasing the friction coefficient and enhancing the anti-slip performance of the road surface. At the same time, the set asphalt concrete raised rib 8 can change the texture structure of the road surface, make the road surface slightly arched, increase the friction of the road surface, and reduce the possibility of the road surface being slippery, ensuring the safety of vehicle driving.
[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-skid concrete pavement structure, comprising a base layer (1), characterized in that: A lime-stabilized soil base layer (2) is laid on the base layer (1), a water-stabilized crushed stone base layer (3) is laid on the lime-stabilized soil base layer (2), a water-stabilized gravel base layer (4) is laid on the water-stabilized crushed stone base layer (3), a cement concrete surface layer (5) is laid on the water-stabilized gravel base layer (4), a polymer binder layer (6) is laid on the cement concrete surface layer (5), a crushed stone anti-slip layer (7) and asphalt concrete raised ribs (8) are laid on the polymer binder layer (6), and the asphalt concrete raised ribs (8) are evenly distributed on the polymer binder layer (6).
2. The anti-slip concrete pavement structure according to claim 1, characterized in that: The cement concrete surface layer (5), the polymer binder layer (6) and the crushed stone anti-slip layer (7) are all provided with longitudinal seams (9), and the longitudinal seams (9) between the three correspond to each other.
3. The anti-slip concrete pavement structure according to claim 1, characterized in that: The cement concrete surface layer (5), the polymer binder layer (6) and the crushed stone anti-slip layer (7) are all provided with transverse joints (10), and the transverse joints (10) between the three correspond to each other.
4. The anti-slip concrete pavement structure according to claim 3, characterized in that: The transverse joints (10) are evenly distributed on the cement concrete surface layer (5), the polymer binder layer (6) and the crushed stone anti-slip layer (7).
5. The anti-slip concrete pavement structure according to claim 1, characterized in that: The asphalt concrete raised ribs (8) are consistent in width with the polymer binder layer (6), and the asphalt concrete raised ribs (8) are buried in the crushed stone anti-skid layer (7).
6. The anti-slip concrete pavement structure according to claim 1, characterized in that: The top surface of the asphalt concrete raised rib (8) protrudes from the top surface of the crushed stone anti-slip layer (7), and the protruding height ranges from 1 mm to 2.5 mm.