Ultra-thin asphalt pavement repair structure

Abstract

The present application discloses an ultra-thin asphalt pavement repair structure, which belongs to the technical field of pavement maintenance, and comprises an asphalt pavement layer with a crack groove, wherein a repair groove is provided on the surface of the asphalt pavement layer, and a first step, a second step and a third step are provided around the repair groove in sequence from bottom to top, a first reinforcement net is laid on the surface of the first step, a second reinforcement net is laid on the surface of the second step, and a third reinforcement net is laid on the surface of the third step, and the interior of the repair groove is filled with an asphalt repair block. An improved ultra-thin asphalt pavement repair structure is provided with a repair groove on the surface of the asphalt pavement layer, and then the first reinforcement net, the second reinforcement net and the third reinforcement net are assembled in the repair groove one by one through an assembly groove, and finally asphalt repair blocks made of modified asphalt material are poured in the repair groove in sequence from bottom to top, so as to strengthen the structural strength of the asphalt repair block, prevent water seepage, and prevent the problem of cracks being formed again or falling off.

Description

Technical Field

[0001] The present application relates to the technical field of pavement maintenance, and in particular to an ultra-thin asphalt pavement repair structure. Background Art

[0002] The ultra-thin wear layer preventive maintenance technology is a technology that has been focused on in recent years. This technology first spreads a layer of modified emulsified asphalt as a bonding layer, and then spreads a thin layer of hot asphalt mixture. The paving thickness is generally 1.5-2.5cm. This technology is mainly used for preventive maintenance of high-grade asphalt or cement pavements and corrective maintenance of minor diseases. It can also be used as a surface wear layer for newly built roads. It is an ultra-durable surface layer with excellent properties of anti-skid, anti-rutting and anti-wear.

[0003] The patent document with the published announcement number CN204224946U discloses a composite hot-mixed hot-laid ultra-thin overlay paving structure, which includes a crushed stone seal layer and an ultra-thin wear layer from bottom to top of the road surface, and the crushed stone seal layer includes a modified asphalt layer and a crushed stone layer from bottom to top, and the ultra-thin wear layer is a thin layer of hot asphalt mixture. The utility model combines the advantages of both the crushed stone seal layer and the ultra-thin wear layer, has excellent driving comfort, safety, durability, low noise and the ability to prevent reflective cracks, can be used to repair ruts through multi-layer paving of crushed stone seal layers, and is particularly suitable for new or old cement pavements and old asphalt pavement paving projects with severe rutting, which is conducive to the large-scale promotion of this maintenance technology.

[0004] The structure in the above application document is not suitable for ultra-thin asphalt pavement repair, which contains a gravel seal layer and the thickness is difficult to control. Generally speaking, the thickness of asphalt in ultra-thin asphalt is only 1-3cm; the traditional repair method is to use modified asphalt to fill and repair. However, this repair method takes a long time to construct, the construction process is complicated, and there is a lack of reinforcement measures for the repair structure. With the action of traffic load, cracks will quickly re-form or the sealant will fall off, resulting in rapid water seepage and causing road damage. Utility Model Content

[0005] The present application proposes an ultra-thin asphalt pavement repair structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] An ultra-thin asphalt pavement repair structure comprises an asphalt pavement layer with a crack groove, wherein a repair groove is provided on the surface of the asphalt pavement layer, and a first step, a second step and a third step are sequentially provided around the repair groove from bottom to top, a first reinforcement net is laid on the surface of the first step, a second reinforcement net is laid on the surface of the second step, and a third reinforcement net is laid on the surface of the third step, and the interior of the repair groove is filled with an asphalt repair block.

[0008] By adopting the above technical scheme, a repair groove is first opened on the surface of the asphalt pavement layer, and then the first reinforcement mesh, the second reinforcement mesh and the third reinforcement mesh are assembled on the first step, the second step and the third step one by one through the assembly groove. Finally, the asphalt repair block made of modified asphalt material is poured in the repair groove from bottom to top in sequence, which can enhance the structural strength of the asphalt repair block, prevent water seepage, and prevent the formation of cracks or falling off again.

[0009] As a preferred embodiment, the inner walls of the first step, the second step and the third step are respectively provided with assembly grooves adapted to the first reinforcement net, the second reinforcement net and the third reinforcement net.

[0010] By adopting the above technical solution, the strength of the asphalt repair block is greatly improved by installing the first reinforcement net, the second reinforcement net and the third reinforcement net in the assembly groove.

[0011] As a preferred embodiment, the inner walls of the first step, the second step and the third step are all provided with an asphalt adhesive layer.

[0012] By adopting the above technical solution, the asphalt bonding layer helps to improve the firmness between the asphalt repair block and the repair groove to prevent the asphalt repair block from falling off.

[0013] As a preferred embodiment, a waterproof reinforcement belt is provided on the top edge of the repair groove along the circumferential direction. The waterproof reinforcement belt is woven by warp and weft of SEBS strips, and the waterproof reinforcement belt is in a "U"-shaped structure.

[0014] By adopting the above technical solution, water can be better prevented from penetrating into the inner side of the repair groove, and at the same time, the periphery of the repair groove is reinforced to extend the service life of the repaired part.

[0015] As a preferred embodiment, the asphalt repair block is made of modified asphalt material, and the top is arc-shaped and higher than the surface of the asphalt pavement layer.

[0016] By adopting the above technical solution, under the repeated rolling of motor vehicles, the asphalt repair block will gradually flatten and merge with the asphalt pavement layer.

[0017] As a preferred embodiment, the bottom of the repair groove is rectangular or trapezoidal.

[0018] By adopting the above technical solution, it is more convenient to cut the damaged asphalt pavement into a rectangle or a trapezoid, which can improve work efficiency.

[0019] Beneficial effects of this application:

[0020] The ultra-thin asphalt pavement repair structure is formed by opening a repair groove on the surface of the asphalt pavement layer, and then assembling the first reinforcement net, the second reinforcement net and the third reinforcement net one by one on the first step, the second step and the third step through the assembly groove, and finally pouring the asphalt repair block made of modified asphalt material into the repair groove from bottom to top in sequence, which can strengthen the structural strength of the asphalt repair block and prevent water seepage, and prevent the problem of cracks forming again or falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 A schematic diagram of the internal structure of the repair groove of the present application;

[0023] Figure 3 A cross-sectional view of a repair groove of the present application;

[0024] Figure 4 This is a cross-sectional view of the asphalt patch of the present application.

[0025] Numbers in the figure: 1. Asphalt pavement layer; 2. Repair groove; 3. First step; 4. Second step; 5. Third step; 6. Second reinforcement mesh; 7. Third reinforcement mesh; 8. Asphalt repair block; 9. Assembly groove; 10. Waterproof reinforcement belt; 11. Asphalt bonding layer; 12. First reinforcement mesh. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0027] Reference Figure 1-4, an ultra-thin asphalt pavement repair structure, including an asphalt pavement layer 1 with a crack groove, a repair groove 2 is opened on the surface of the asphalt pavement layer 1, and a first step 3, a second step 4 and a third step 5 are sequentially arranged around the repair groove 2 from bottom to top, a first reinforcing mesh 12 is laid on the surface of the first step 3, a second reinforcing mesh 6 is laid on the surface of the second step 4, and a third reinforcing mesh 7 is laid on the surface of the third step 5. The interior of the repair groove 2 is filled with an asphalt repair block 8. First, a repair groove 2 is opened on the surface of the asphalt pavement layer 1, and then the first reinforcing mesh 12, the second reinforcing mesh 6 and the third reinforcing mesh 7 are assembled on the first step 3, the second step 4 and the third step 5 one by one through the assembly groove, and finally, the asphalt repair block 8 made of modified asphalt material is poured in the repair groove 2 from bottom to top, which can strengthen the structural strength of the asphalt repair block 8 and prevent water seepage, and prevent the formation of cracks or falling off again.

[0028] Reference Figure 1 The inner walls of the first step 3, the second step 4 and the third step 5 are respectively provided with assembly grooves 9 adapted to the first reinforcement net 12, the second reinforcement net 6 and the third reinforcement net 7. By installing the first reinforcement net 12, the second reinforcement net 6 and the third reinforcement net 7 in the assembly grooves 9, the strength of the asphalt repair block 8 is greatly improved.

[0029] Reference Figure 4 The inner walls of the first step 3, the second step 4 and the third step 5 are all provided with an asphalt bonding layer 11, and the asphalt bonding layer 11 helps to improve the firmness between the asphalt repair block 8 and the repair groove 2 to prevent the asphalt repair block 8 from falling off.

[0030] Reference Figure 3 A waterproof reinforcement belt 10 is provided along the circumferential direction of the top edge of the repair groove 2. The waterproof reinforcement belt 10 is woven by SEBS strips in warp and weft. The waterproof reinforcement belt 10 is in a "U"-shaped structure, which can better prevent water from penetrating into the inside of the repair groove 2. At the same time, the periphery of the repair groove 2 is reinforced to extend the service life of the repaired part.

[0031] Reference Figure 1 and Figure 4 The asphalt repair block 8 is made of modified asphalt material, and the top is arc-shaped and higher than the surface of the asphalt pavement layer 1. Under the repeated rolling of motor vehicles, the asphalt repair block 8 will gradually flatten and merge with the asphalt pavement layer 1.

[0032] Reference Figure 2 The bottom of the repair groove 2 is rectangular or trapezoidal, and it is convenient to cut the damaged asphalt pavement position into a rectangle or trapezoid, which can improve work efficiency.

[0033] Working principle: First, a repair groove 2 is opened on the surface of the asphalt pavement layer 1. It is more convenient to cut the damaged asphalt pavement into a rectangle or trapezoid, which can improve work efficiency. A waterproof reinforcement belt 10 with a "U"-shaped structure is installed along the circumferential direction on the top edge of the repair groove 2. The waterproof reinforcement belt 10 is woven by SEBS strips in warp and weft. The waterproof reinforcement belt 10 has a "U"-shaped structure, which can better prevent water from penetrating into the inside of the repair groove 2. At the same time, the periphery of the repair groove 2 is reinforced to extend the service life of the repaired part. Then, the first reinforcement net 12, the second reinforcement net 6 and the third reinforcement net 7 are assembled one by one on the first step 3, the second step 4 and the third step 5 through the assembly groove. Finally, the asphalt repair block 8 made of modified asphalt material is poured in the repair groove 2 from bottom to top, which can enhance the structural strength of the asphalt repair block 8 and prevent water seepage, and prevent cracks from forming again or falling off.

[0034] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. An ultra-thin asphalt pavement repair structure, comprising an asphalt pavement layer (1) with crack grooves, characterized in that: The surface of the asphalt pavement layer (1) is provided with a repair groove (2), and the repair groove (2) is provided with a first step (3), a second step (4) and a third step (5) in sequence from bottom to top. The surface of the first step (3) is paved with a first reinforcement net (12), the surface of the second step (4) is paved with a second reinforcement net (6), and the surface of the third step (5) is paved with a third reinforcement net (7). The interior of the repair groove (2) is filled with an asphalt repair block (8).

2. The ultra-thin asphalt pavement repair structure according to claim 1, characterized in that: The inner walls of the first step (3), the second step (4) and the third step (5) are respectively provided with assembly grooves adapted to the first reinforcement net (12), the second reinforcement net (6) and the third reinforcement net (7).

3. The ultra-thin asphalt pavement repair structure according to claim 1, characterized in that: The inner walls of the first step (3), the second step (4) and the third step (5) are all provided with an asphalt bonding layer (11).

4. The ultra-thin asphalt pavement repair structure according to claim 1, characterized in that: A waterproof reinforcement belt (10) is provided along the circumferential direction at the top edge of the repair groove (2); the waterproof reinforcement belt (10) is formed by weaving SEBS strips in warp and weft; the waterproof reinforcement belt (10) is in a "U"-shaped structure.

5. The ultra-thin asphalt pavement repair structure according to claim 1, characterized in that: The asphalt repair block (8) is made of modified asphalt material, and has an arc-shaped top that is higher than the surface of the asphalt pavement layer (1).

6. The ultra-thin asphalt pavement repair structure according to claim 1, characterized in that: The bottom of the repair groove (2) is rectangular or trapezoidal.

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