Steel slag asphalt pavement structure

Abstract

The utility model discloses a steel slag asphalt pavement structure, which relates to the technical field of road engineering and comprises a surface layer and a sealing layer. The utility model provides a steel slag asphalt pavement structure which sequentially comprises a surface layer made of an asphalt mixture material, a sealing layer made of a steel slag aggregate material, a base layer made of a cement stabilized macadam material and a cushion layer made of a graded macadam material from top to bottom, and a waterproof layer made of an asphalt waterproof roll material is arranged between the surface layer and the sealing layer. The waterproof layer and the sealing layer have dual effects, water of the surface layer is prevented from entering the base layer, roadbed damage is avoided, and the service life of a road is shortened, the bonding layer made of modified emulsified asphalt is arranged between the base layer and the cushion layer, and the stability of the pavement structure is further improved; the pavement structure has the advantage of high friction and impact resistance, the problem of shortage of urgently needed materials in roads is solved, and land occupation and pollution caused by the steel slag can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of road engineering, in particular to a steel slag asphalt pavement structure. Background Art

[0002] Highways are important infrastructure for national economic and social development. More than 90% of my country's high-grade highway asphalt pavements are pavement structures with semi-rigid base layers. However, the construction of infrastructure such as highways is gradually facing the problem of insufficient production of high-quality stone materials. Steel slag is the largest solid waste produced in the steel industry, with an output of about 15% of crude steel production. Steel slag aggregate has the advantages of high strength, strong wear resistance, and good adsorption with asphalt. After processing, it has good road performance and is a good road construction material to replace sand and gravel aggregates.

[0003] The current idea of ​​using extensive steel slag to replace coarse aggregate from ore has led to the embarrassing situation that many high-quality steel slags are used at low value and some low-quality steel slags cannot be used because they cannot meet the technical requirements, which seriously hinders the resource utilization of industrial solid waste steel slag.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a steel slag asphalt pavement structure is proposed. Utility Model Content

[0005] The utility model aims to provide a steel slag asphalt pavement structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel slag asphalt pavement structure, comprising a surface layer and a sealing layer, a sealing layer is paved at the bottom of the surface layer, and the surface layer is made of asphalt mixture, and the sealing layer is made of steel slag aggregate, a base layer is paved at the bottom of the sealing layer, and the base layer is made of cement-stabilized gravel, a cushion layer is paved at the bottom of the base layer, and the cushion layer is made of graded gravel.

[0007] Furthermore, a waterproof layer is provided between the surface layer and the sealing layer, and the waterproof layer is made of asphalt waterproofing membrane.

[0008] Furthermore, an adhesive layer is provided between the base layer and the cushion layer, and the adhesive layer is made of modified emulsified asphalt.

[0009] Furthermore, anti-scour components are obliquely laid on both sides of the surface layer, and the anti-scour components include curbstones. The curbstones are cast on both sides of the surface layer, and the curbstones are higher than the plane of the surface layer.

[0010] Furthermore, the anti-scour component also includes a slope and a ditch. The side slope is cast on the outside of the curbstone, and the side ditch is opened at the end of the slope.

[0011] Furthermore, the anti-scour component also includes a water inlet and a grille mesh. The water inlet is opened on the inner side of the curb along the extension direction of the road surface, and the entrance of the water inlet is covered with a grille mesh.

[0012] Furthermore, the anti-scour component also includes a drainage groove, the inner side of the water inlet is connected to the drainage groove, and the end of the drainage groove is connected to the side ditch.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. When the utility model is in use, the pavement structure of the present application is, from top to bottom, a surface layer of asphalt mixture material, a sealing layer of steel slag aggregate material, a base layer of cement stabilized crushed stone material and a cushion layer of graded crushed stone material, wherein a waterproof layer of asphalt waterproofing membrane material is arranged between the surface layer and the sealing layer, and the dual functions of the waterproof layer and the sealing layer prevent water in the surface layer from entering the base layer, causing roadbed damage and reducing the service life of the highway, wherein a bonding layer of modified emulsified asphalt material is arranged between the base layer and the cushion layer, further improving the stability of the pavement structure, and through the setting of the sealing layer of steel slag aggregate material, the pavement structure of the present application has the advantages of strong compressive bearing capacity and strong resistance to friction and impact, etc., which not only solves the problem of material shortage urgently needed in roads, but also helps to reduce the occupation and pollution of land by steel slag.

[0015] 2. When the utility model is in use, water inlets are opened at equal intervals on both sides of the road surface along the extension direction. The grille net covering the water inlet prevents garbage from blocking the inlet. The water inlet is connected to a drainage trough, which is connected to the side ditch. After rainwater falls on the road surface, it is concentrated near the water inlet along the curb and then flows to the side ditch through the drainage trough. By designing the above-mentioned centralized road surface drainage method, it is effectively prevented that rainwater scours the slope and improves the road surface drainage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall internal structure of the utility model.

[0019] In the figure: 1, surface layer; 2, sealing layer; 3, waterproof layer; 4, base layer; 5, cushion layer; 6, bonding layer; 7, anti-scour component; 701, curbstone; 702, slope; 703, ditch; 704, water inlet; 705, grille; 706, drainage trough. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figures 1 to 3 As shown, a steel slag asphalt pavement structure comprises a surface layer 1 and a sealing layer 2, the sealing layer 2 is paved at the bottom of the surface layer 1, and the surface layer 1 is made of asphalt mixture, and the sealing layer 2 is made of steel slag aggregate, a waterproof layer 3 is arranged between the surface layer 1 and the sealing layer 2, and the waterproof layer 3 is made of asphalt waterproofing membrane, a base layer 4 is paved at the bottom of the sealing layer 2, and the base layer 4 is made of cement stabilized gravel, a cushion layer 5 is paved at the bottom of the base layer 4, and the cushion layer 5 is made of graded gravel, an adhesive layer 6 is arranged between the base layer 4 and the cushion layer 5, and the adhesive layer 6 is made of modified emulsified asphalt, The pavement structure of the present application is composed of a surface layer 1 made of asphalt mixture, a sealing layer 2 made of steel slag aggregate, a base layer 4 made of cement stabilized crushed stone, and a cushion layer 5 made of graded crushed stone from top to bottom. A waterproof layer 3 made of asphalt waterproofing membrane is provided between the surface layer 1 and the sealing layer 2. The waterproof layer 3 and the sealing layer 2 have dual functions, preventing water from the surface layer 1 from entering the base layer 4, causing damage to the roadbed and reducing the service life of the highway. A bonding layer 6 made of modified emulsified asphalt is provided between the base layer 4 and the cushion layer 5, further improving the stability of the pavement structure.

[0022] like Figure 1 to Figure 2 As shown, the surface layer 1 is paved with anti-scouring components 7 on both sides, the anti-scouring components 7 include curbstones 701, the curbstones 701 are cast on both sides of the surface layer 1, and the curbstones 701 are higher than the plane of the surface layer 1, the anti-scouring components 7 also include slopes 702 and side ditches 703, the slopes 702 are cast on the outer side of the curbstones 701, and the side ditches 703 are opened at the end of the slope 702, the anti-scouring components 7 also include water inlets 704 and grille nets 705, the water inlets 704 are opened on the inner side of the curbstones 701 along the extension direction of the road surface, and the entrance of the water inlet 704 is covered with a grille net 705, and the road surface on both sides along the extension direction Water inlets 704 are arranged at equal intervals, and a grille net 705 covering the water inlets 704 prevents garbage from blocking the inlet. The water inlet 704 is connected to a drainage trough 706, and the drainage trough 706 is connected to the side ditch 703. After rainwater falls on the road surface, it is concentrated near the water inlet 704 along the curb 701, and then flows to the side ditch 703 through the drainage trough 706. By designing the above-mentioned centralized road surface drainage method, the scouring of the slope 702 by rainwater is effectively prevented, and the road surface drainage efficiency is improved. The anti-scouring component 7 also includes a drainage trough 706, and the inner side of the water inlet 704 is connected to the drainage trough 706, and the end of the drainage trough 706 is connected to the side ditch 703.

[0023] Working principle: When using this kind of steel slag asphalt pavement structure, the pavement structure of the present application is composed of a surface layer 1 of asphalt mixture material, a sealing layer 2 of steel slag aggregate material, a base layer 4 of cement stabilized crushed stone material and a cushion layer 5 of graded crushed stone material from top to bottom, wherein a waterproof layer 3 of asphalt waterproof membrane material is arranged between the surface layer 1 and the sealing layer 2, and the waterproof layer 3 and the sealing layer 2 have a dual function to prevent the water of the surface layer 1 from entering the base layer 4, causing the roadbed to be destroyed and reducing the service life of the highway, wherein a bonding layer 6 of modified emulsified asphalt material is arranged between the base layer 4 and the cushion layer 5, which further improves the stability of the pavement structure, and the sealing layer 2 of steel slag aggregate material is arranged, so that the pavement structure of the present application has It has the advantages of strong compressive bearing capacity and strong resistance to friction and impact, which not only solves the problem of material shortage urgently needed in roads, but also helps to reduce the occupation and pollution of land by steel slag. When in use, water inlets 704 are opened at equal intervals on both sides of the road surface along the extension direction. The grille net 705 covered by the water inlet 704 prevents garbage from blocking the entrance. The water inlet 704 is connected to the drainage ditch 706, and the drainage ditch 706 is connected to the side ditch 703. After rainwater falls on the road surface, it is concentrated near the water inlet 704 along the curb 701, and then flows to the side ditch 703 through the drainage ditch 706. By designing the above-mentioned centralized road drainage method, it is effectively prevented from scouring the slope 702 and improving the road drainage efficiency.

[0024] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A steel slag asphalt pavement structure, characterized in that: The invention comprises a surface layer (1) and a sealing layer (2), wherein the sealing layer (2) is paved at the bottom of the surface layer (1), and the surface layer (1) is made of asphalt mixture, and the sealing layer (2) is made of steel slag aggregate, a base layer (4) is paved at the bottom of the sealing layer (2), and the base layer (4) is made of cement-stabilized crushed stone, and a cushion layer (5) is paved at the bottom of the base layer (4), and the cushion layer (5) is made of graded crushed stone.

2. The steel slag asphalt pavement structure according to claim 1, characterized in that: A waterproof layer (3) is provided between the surface layer (1) and the sealing layer (2), and the waterproof layer (3) is made of asphalt waterproof coiled material.

3. The steel slag asphalt pavement structure according to claim 1, characterized in that: An adhesive layer (6) is provided between the base layer (4) and the cushion layer (5), and the adhesive layer (6) is made of modified emulsified asphalt.

4. The steel slag asphalt pavement structure according to claim 1, characterized in that: Anti-scour components (7) are paved obliquely on both sides of the surface layer (1), and the anti-scour components (7) include curbstones (701). The curbstones (701) are cast on both sides of the surface layer (1), and the curbstones (701) are higher than the plane of the surface layer (1).

5. The steel slag asphalt pavement structure according to claim 4, characterized in that: The anti-scour component (7) further comprises a side slope (702) and a side ditch (703); the side slope (702) is cast outside the curb (701), and the side ditch (703) is opened at the end of the inclined surface of the side slope (702).

6. The steel slag asphalt pavement structure according to claim 4, characterized in that: The anti-scour component (7) further comprises a water inlet (704) and a grille mesh (705); the water inlet (704) is provided on the inner side of the curb (701) along the extension direction of the road surface, and the entrance of the water inlet (704) is covered with the grille mesh (705).

7. The steel slag asphalt pavement structure according to claim 6, characterized in that: The anti-scour component (7) further comprises a drainage groove (706), the inner side of the water inlet (704) is connected to the drainage groove (706), and the end of the drainage groove (706) is connected to the side ditch (703).

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