Seal pavement structure

Abstract

The utility model discloses a seal coat pavement structure which comprises a viscous micro-surfacing layer, a nanoscale rubber particle modified asphalt layer is filled below the viscous micro-surfacing layer, and an emulsified asphalt permeable layer, a cement stabilized macadam base layer and a compacted roadbed layer are arranged below the nanoscale rubber particle modified asphalt layer from top to bottom. A gravel sealing layer is arranged in the nanoscale rubber particle modified asphalt layer in a mixed mode, gravel in the gravel sealing layer is different in specification and shape, gaps between the adjacent gravel in the gravel sealing layer are filled with the nanoscale rubber particle modified asphalt layer in a slurry shape, and triangular interval type grooves are formed in the top side of the emulsified asphalt permeable layer. And the top side of the cement stabilized macadam base layer is provided with corresponding trapezoidal interval grooves. According to the modified asphalt slurry seal pavement structure, through the arrangement of each group of filling roadbed layers on the bottom side of the viscous micro-surfacing layer, the problem that the compactness of layered and separated filling of each group of existing roadbed layers is limited is solved, and the seamless filling effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface seal coats, in particular to a seal coat road surface structure. Background Art

[0002] In a road surface seal coat, the seal coat is a thin layer of asphalt mixture paved to close surface voids and prevent moisture from infiltrating into the surface layer. The one paved on the surface of the surface layer is called the upper seal coat, and the one paved under the surface layer is called the lower seal coat.

[0003] In the existing utility model patent with the publication number of CN206706487U, a nano-rubber particle high-elasticity road surface seal coat structure is disclosed, which includes a viscous microsurfacing layer, a first nano-rubber particle modified asphalt layer, a chip seal layer, a second nano-rubber particle modified asphalt layer, an emulsified asphalt penetration layer, a cement stabilized macadam base layer, and a compacted road base layer laid in sequence from top to bottom; the above application document makes it have corresponding durability, etc. by filling different types of filling roadbeds in each layer of the road surface, but still adopts the traditional layered filling, and the modified asphalt in a slurry state is also filled in a separated manner, with limited effects.

[0004] Meanwhile, after the road is rolled by vehicles, it is very easy to have diseases such as transverse cracks and local turtle net cracks, reducing the service life of the road. Content of the Utility Model

[0005] To overcome the deficiencies in the above-mentioned prior art, the utility model provides a seal coat road surface structure, which solves the problem of limited compactness of the separated filling of each layer of the road base, enables the road surface structure to have better bonding performance, and extends the service life of the road surface.

[0006] To achieve the above purposes, the technical solution adopted by the utility model is as follows:

[0007] A seal coat road surface structure includes a viscous microsurfacing layer, a nano-rubber particle modified asphalt layer is filled below the viscous microsurfacing layer, and an emulsified asphalt penetration layer, a cement stabilized macadam base layer, and a compacted road base layer are arranged from top to bottom below the nano-rubber particle modified asphalt layer;

[0008] A chip seal layer is mixed in the nano-rubber particle modified asphalt layer, the chips in the chip seal layer are chips with different specifications and shapes, and the gaps between adjacent chips in the chip seal layer are filled with a nano-rubber particle modified asphalt layer in a slurry state;

[0009] Triangular spaced grooves are arranged on the top side of the emulsified asphalt penetration layer, and corresponding trapezoidal spaced grooves are arranged on the top side of the cement stabilized macadam base layer.

[0010] A fiber layer is provided in the emulsified asphalt prime coat, and the fiber layer is arranged at the middle position of the emulsified asphalt prime coat.

[0011] The fiber layer is made of polyester oil-impregnated reinforcing cloth.

[0012] An epoxy resin layer is provided between the emulsified asphalt prime coat and the cement stabilized macadam base course.

[0013] The viscous microsurfacing layer is made of high-viscosity emulsified asphalt, and the solid content of the high-viscosity emulsified asphalt is greater than %.

[0014] The nano-sized rubber particle modified asphalt layer refers to asphalt modified with nano-sized rubber particles, and the particle size of the rubber particles is -nm.

[0015] The channels on the top side of the emulsified asphalt prime coat are formed by intermittent pressing with triangular pressing blocks.

[0016] The channels on the top side of the cement stabilized macadam base course are formed by intermittent pressing with inverted trapezoidal pressing blocks.

[0017] The cement stabilized macadam base course and the compacted road base course at its bottom side are filled in layers.

[0018] The bottom side of the viscous microsurfacing layer is equipped with side seal layers on both sides of the nano-sized rubber particle modified asphalt layer, chip seal layer, emulsified asphalt prime coat, cement stabilized macadam base course and compacted road base course, and the side seal layers are fine soil base courses.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] In this modified asphalt slurry seal pavement structure, through the setting of each filling road base course at the bottom side of the viscous microsurfacing layer and the design of embedding the chip seal layer in the nano-sized rubber particle modified asphalt layer, through the integrated setting of the two, it ensures that the layered filling roadbed has a tight filling effect and ensures a seamless filling effect. The characteristics of the fiber layer itself with high tensile strength and high elastic modulus effectively improve the tensile, shear, compressive and impact resistance strengths of the seal layer. The channel-type fitting filling of the bottom-side emulsified asphalt prime coat and the cement stabilized macadam base course can further ensure the tightness of its filling type, and solves the problem of limited tightness of the existing layered and separated filling of each road base course. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the present utility model.

[0022] In the figure: 1, viscous microsurfacing layer; 2, nano-sized rubber particle modified asphalt layer; 3, chip seal layer; 4, emulsified asphalt prime coat; 5, cement stabilized macadam base course; 6, compacted road base course; 7, side seal layer; 8, fiber layer; 9, epoxy resin layer. Detailed implementation manners

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0024] As Figure 1 shown, a seal coat pavement structure includes a viscous microsurfacing layer 1. A nano-rubber particle modified asphalt layer 2 is filled below the viscous microsurfacing layer 1. An emulsified asphalt penetrating layer 4, a cement stabilized macadam base layer 5 and a compacted road base layer 6 are arranged from top to bottom below the nano-rubber particle modified asphalt layer 2;

[0025] A chip seal layer 3 is mixed in the nano-rubber particle modified asphalt layer 2. The chips in the chip seal layer 3 are chips with various specifications and different shapes, and the gaps between adjacent chips in the chip seal layer 3 are filled with the nano-rubber particle modified asphalt layer 2 in a slurry state;

[0026] The top side of the emulsified asphalt penetrating layer 4 is provided with triangular spaced grooves, and the top side of the cement stabilized macadam base layer 5 is provided with corresponding trapezoidal spaced grooves.

[0027] Preferably, a fiber layer 8 is arranged in the emulsified asphalt penetrating layer 4, and the fiber layer 8 is arranged at the middle position of the emulsified asphalt penetrating layer 4. Due to the characteristics of the high tensile strength and high elastic modulus value of the fiber itself, the tensile, shear, compressive and impact strengths of the seal coat are effectively improved.

[0028] Preferably, the fiber layer 8 adopts a polyester oil-impregnated reinforcing cloth.

[0029] Preferably, an epoxy resin layer 9 is arranged between the emulsified asphalt penetrating layer 4 and the cement stabilized macadam base layer 5. The thickness of the epoxy resin layer 9 is 4 mm, and the epoxy resin layer 9 improves the bonding strength between the emulsified asphalt penetrating layer 4 and the cement stabilized macadam base layer 5.

[0030] Preferably, the viscous microsurfacing layer 1 is made of high-viscosity emulsified asphalt, and the solid content of the high-viscosity emulsified asphalt is greater than 70%. The particle size of the viscous microsurfacing layer 1 is 8 mm.

[0031] Preferably, the nano-rubber particle modified asphalt layer 2 refers to nano-rubber particle modified asphalt, and the particle size of the rubber particles is 10-100 nm.

[0032] Preferably, the groove on the top side of the emulsified asphalt penetrating layer 4 is formed by intermittently pressing triangular pressing blocks.

[0033] Preferably, the groove on the top side of the cement stabilized macadam base layer 5 is formed by intermittently pressing inverted trapezoidal pressing blocks.

[0034] Preferably, the cement stabilized macadam base course 5 and the compacted road base course 6 at its bottom side are filled in a layered manner.

[0035] Preferably, a side seal layer 7 is assembled at the bottom side of the viscous microsurfacing layer 1. The side seal layer 7 is provided on both sides of the nano-rubber particle modified asphalt layer 2, the chip seal layer 3, the emulsified asphalt prime coat 4, the cement stabilized macadam base course 5 and the compacted road base course 6, and the side seal layer 7 is a fine soil base course.

[0036] When constructing this pavement structure, first fill the compacted road base course 6, the cement stabilized macadam base course 5 and the side seal layers 7 on both sides thereof in a layered filling manner. Then, use a ladder-shaped pressing block to press rectangular grooves on the top surface of the cement stabilized macadam base course 5, and then fill the emulsified asphalt prime coat 4. Before setting the emulsified asphalt prime coat 4, first apply an epoxy resin layer 9 on the cement stabilized macadam base. When the emulsified asphalt prime coat 4 is laid to half of its thickness, lay a fiber layer 8 on it. Then, complete the laying of the other half of the thickness of the emulsified asphalt prime coat 4. Then, use a triangular pressing block to press triangular grooves on the top surface of the emulsified asphalt prime coat 4, and then fill a layer of nano-rubber particle modified asphalt layer 2. Then, fill the chip seal layer 3 in a layered and scattered manner, and then fill a slurry-type nano-rubber particle modified asphalt layer 2 to make it fill into the gravel gaps inside the chip seal layer 3, so that the filling between the nano-rubber particle modified asphalt layer 2 and the chip seal layer 3 is a fusion filling. Finally, fill the topmost viscous microsurfacing layer 1 to complete the pavement sealing.

[0037] Only the preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention, and all such changes should be included within the protection scope of the present invention.

Claims

1. A sealing pavement structure, characterized in that: It comprises a viscous micro-surfacing layer (1), a nano-scale rubber particle modified asphalt layer (2) is filled below the viscous micro-surfacing layer (1), and an emulsified asphalt permeable layer (4), a cement-stabilized crushed stone base layer (5) and a compacted road base layer (6) are arranged below the nano-scale rubber particle modified asphalt layer (2) from top to bottom; The nano-scale rubber particle modified asphalt layer (2) is mixed with a chip seal layer (3), the chip seal layer (3) contains chipped stones of various specifications and shapes, and the gaps between adjacent chipped stones in the chip seal layer (3) are filled with the nano-scale rubber particle modified asphalt layer (2) in a slurry state; The top side of the emulsified asphalt permeable layer (4) is provided with a triangular-shaped interval groove, and the top side of the cement-stabilized crushed stone base layer (5) is provided with a corresponding trapezoidal interval groove.

2. A sealing pavement structure according to claim 1, characterized in that: A fiber layer (8) is provided in the emulsified asphalt permeable layer (4), and the fiber layer (8) is provided in the middle of the emulsified asphalt permeable layer (4).

3. A sealing pavement structure according to claim 2, characterized in that: The fiber layer (8) is made of polyester oil-impregnated reinforced cloth.

4. A sealing pavement structure according to claim 1, characterized in that: An epoxy resin layer (9) is provided between the emulsified asphalt permeable layer (4) and the cement-stabilized crushed stone base layer (5).

5. The sealing pavement structure according to claim 1, characterized in that: The viscous micro-surfacing layer (1) is made of high-viscosity emulsified asphalt, and the solid content of the high-viscosity emulsified asphalt is greater than 70%.

6. A sealing pavement structure according to claim 1, characterized in that: The nano-scale rubber particle modified asphalt layer (2) refers to asphalt modified with nano-scale rubber particles, and the particle size of the rubber particles is 10-100 nm.

7. A sealing pavement structure according to claim 1, characterized in that: The grooves on the top side of the emulsified asphalt permeable layer (4) are formed by intermittent pressing of triangular pressing blocks.

8. The sealing pavement structure according to claim 1, characterized in that: The grooves on the top side of the cement-stabilized crushed stone base layer (5) are formed by intermittent pressing of inverted ladder-shaped pressing blocks.

9. A sealing pavement structure according to claim 1, characterized in that: The cement-stabilized crushed stone base layer (5) and the compacted road base layer (6) at its bottom are filled in layers.

10. The sealing pavement structure according to claim 1, characterized in that: The bottom side of the viscous micro-surfacing layer (1) is equipped with a nano-scale rubber particle modified asphalt layer (2), a crushed stone seal layer (3), an emulsified asphalt permeable layer (4), a cement stabilized crushed stone base layer (5) and a compacted road base layer (6), and the two sides are encapsulated with side sealing layers (7), and the side sealing layers (7) are fine soil base layers.

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