Bituminous pavement interlayer anti-crack bonding structure

Abstract

The utility model discloses an interlayer anti-crack bonding structure of an asphalt pavement, which belongs to the technical field of interlayer anti-crack bonding structures of pavements and comprises an upper asphalt layer, a lower asphalt layer and a roadbed, the upper asphalt layer is arranged at the top of the lower asphalt layer, and the lower asphalt layer is arranged at the top of the roadbed. Anti-cracking and anti-sticking structural members are arranged between the upper asphalt layer and the lower asphalt layer and between the lower asphalt layer and the roadbed, mounting grooves are formed in the bottom end surface of the upper asphalt layer, the top end surface of the lower asphalt layer and the top end surface of the roadbed, and the two anti-cracking and anti-sticking structural members are arranged in the two mounting grooves respectively. According to the utility model, the rubble layer has a permeability coefficient, when the asphalt upper layer and the asphalt lower layer are paved, asphalt permeates into rubbles, so that the firmness between the asphalt upper layer and the asphalt lower layer and between the asphalt lower layer and the roadbed can be improved, and the anti-cracking base cloth, the anti-cracking waterproof adhesive film and the polymer modified anti-cracking paste all have interlayer anti-cracking and cohesiveness; and the cohesiveness and crack resistance between the asphalt upper layer and the asphalt lower layer and between the asphalt lower layer and the roadbed can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-cracking bonding structures between pavement layers, and belongs to an anti-cracking bonding structure between asphalt pavement layers. Background Art

[0002] Semi-rigid base asphalt pavement is one of the most commonly used pavement structures at present. It has the advantages of flatness, comfortable driving, and low noise. However, semi-rigid base materials often crack due to temperature shrinkage, dry shrinkage and driving load, and cause stress concentration in the asphalt concrete surface layer to form reflective cracks, causing early damage to the pavement structure. Reflective cracks will further expand under the influence of external factors such as driving load and rainwater immersion. At the same time, rainwater will seep along the cracks, causing more serious pavement structure damage and even affecting driving safety. Therefore, it is necessary to set an anti-cracking bonding structure between asphalt pavement layers to improve the bonding and crack resistance between asphalt pavement layers.

[0003] For example, the prior art publication number is CN210085968U, which is a composite pavement interlayer shear and crack resistant structure. The continuously reinforced concrete surface in the utility model can be milled to remove the floating slurry layer on the concrete surface, and an uneven contact surface is formed after being exposed, which has better adhesion with the spread hot asphalt, better embedding with the spread gravel, and embedding with the bottom of the asphalt concrete layer above it through the gravel layer.

[0004] However, the above-mentioned prior art still has the following problems when in use: when the above-mentioned pavement adopts asphalt film and crushed stone layer as anti-cracking bonding structure, its bonding and crack resistance are relatively low. Based on this, the utility model provides an asphalt pavement interlayer anti-cracking bonding structure with high bonding and crack resistance. Utility Model Content

[0005] To this end, the utility model provides an anti-cracking bonding structure between asphalt pavement layers to solve the problem of cracking between asphalt pavement layers caused by low bonding and crack resistance of the anti-cracking bonding structure in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An anti-cracking bonding structure between asphalt pavement layers comprises an asphalt upper layer, an asphalt lower layer and a roadbed, wherein the asphalt upper layer is arranged on the top of the asphalt lower layer, and the asphalt lower layer is arranged on the top of the roadbed, and anti-cracking bonding structural parts are arranged between the asphalt upper layer and the asphalt lower layer, and between the asphalt lower layer and the roadbed, and the bottom end surface of the asphalt upper layer, the top end surface of the asphalt lower layer and the top end surface of the roadbed are processed with mounting grooves, and two anti-cracking bonding structural parts are respectively arranged in the two mounting grooves, and the anti-cracking bonding structural parts comprise a crushed stone layer, an anti-cracking base cloth, an anti-cracking waterproof bonding film and a polymer-modified anti-cracking paste which are sequentially distributed from top to bottom, and are used to improve the crack resistance between the asphalt upper layer and the asphalt lower layer, and between the asphalt lower layer and the roadbed.

[0008] Furthermore, the gravel layer, anti-crack base cloth, anti-crack waterproof adhesive film and polymer modified anti-crack sticker are all arranged in a wavy shape to increase the contact area between the gravel layer, anti-crack base cloth, anti-crack waterproof adhesive film and polymer modified anti-crack sticker and the installation groove.

[0009] Furthermore, the cross-section of each installation groove is configured to be wavy, and the outer wall of the crushed stone layer and the polymer-modified anti-cracking sticker are respectively adhered to the inner wall of the installation groove, thereby improving the tightness between the anti-cracking adhesive structure and the installation groove.

[0010] Furthermore, the two gravel layers each include two glass fiber grids distributed up and down, the two glass fiber grids are fixedly bonded to each other, and the glass fiber grid is fixedly bonded to the installation groove and the anti-cracking base cloth. Specifically, the glass fiber is woven into a glass fiber grid using a warp knitting process. The glass fiber has the advantages of temperature resistance, waterproofness, corrosion resistance and crack resistance, thereby improving the strength of the anti-cracking adhesive structure.

[0011] Furthermore, a large amount of crushed stones are stored between the two glass fiber grids, and the asphalt upper layer and the asphalt lower layer penetrate into the crushed stones to improve the firmness between the glass fiber grid and the asphalt upper layer and the asphalt lower layer.

[0012] Furthermore, each installation groove has a plurality of first plug holes on its inner wall, and a plurality of first plug blocks matching the first plug holes are fixedly provided on the top outer walls of the two gravel layers and the bottom outer walls of the two polymer modified anti-cracking stickers. The plurality of first plug blocks are respectively inserted into the plurality of first plug holes to improve the firmness between the gravel layer, the polymer modified anti-cracking sticker and the installation groove.

[0013] Furthermore, second plug-in blocks are fixedly provided on the bottom outer walls of the two gravel layers and the top outer walls of the two polymer modified anti-cracking stickers, and a plurality of second plug-in holes compatible with the second plug-in blocks are provided on the two anti-cracking base cloths and the two anti-cracking waterproof adhesive films. The plurality of second plug-in blocks are respectively inserted into the plurality of second plug-in holes, so as to improve the firmness between the gravel layers, the polymer modified anti-cracking stickers, the anti-cracking base cloths and the anti-cracking waterproof adhesive films.

[0014] Furthermore, each first plug-in block and each second plug-in block are made of rubber, which is soft and has a buffering effect.

[0015] The utility model has the following advantages:

[0016] 1. The utility model forms an anti-cracking adhesive structure by means of a crushed stone layer, an anti-cracking base cloth, an anti-cracking waterproof adhesive film and a polymer modified anti-cracking sticker. The crushed stone layer has a permeability coefficient. When the asphalt upper layer and the asphalt lower layer are laid, the asphalt penetrates into the crushed stone, thereby improving the firmness between the asphalt upper layer and the asphalt lower layer, and between the asphalt lower layer and the roadbed. The anti-cracking base cloth, the anti-cracking waterproof adhesive film and the polymer modified anti-cracking sticker all have interlayer crack resistance and adhesion, which can further improve the adhesion and crack resistance between the asphalt upper layer and the asphalt lower layer, and between the asphalt lower layer and the roadbed.

[0017] 2. By cooperating with multiple first plug blocks and multiple first plug holes, the firmness between the gravel layer and the polymer modified anti-cracking sticker and the installation groove can be improved. By plugging multiple second plug blocks and multiple second slots, the firmness between the gravel layer, the polymer modified anti-cracking sticker, the anti-cracking base cloth and the anti-cracking waterproof adhesive film can be improved. The installation groove is arranged in a wavy shape, and the gravel layer, the anti-cracking base cloth, the anti-cracking waterproof adhesive film and the polymer modified anti-cracking sticker are arranged in a wavy shape, so as to improve the tightness between the anti-cracking adhesive structure and the installation groove, and then improve the firmness between the asphalt upper layer, the asphalt lower layer, the roadbed and the anti-cracking adhesive structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 The overall structural diagram provided by the utility model;

[0021] Figure 2 Structural diagram of asphalt upper layer, asphalt lower layer, roadbed and anti-cracking adhesive structural member provided by the utility model;

[0022] Figure 3 A sectional view of the overall structure provided by the utility model;

[0023] Figure 4 A cross-sectional view of a gravel layer provided by the utility model;

[0024] Figure 5 This is a schematic diagram of the polymer modified anti-cracking patch provided by the utility model.

[0025] In the figure: 1, asphalt upper layer; 2, asphalt lower layer; 3, roadbed; 4, anti-crack adhesive structure; 5, installation groove; 6, first plug hole; 7, first plug block; 8, second plug block; 9, second plug hole;

[0026] 401, gravel layer; 402, anti-cracking base fabric; 403, anti-cracking waterproof adhesive film; 404, polymer modified anti-cracking sticker;

[0027] 4011, fiberglass mesh; 4012, gravel. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Refer to the instruction manual Figure 1-5 The utility model provides an anti-cracking bonding structure between asphalt pavement layers, including an asphalt upper layer 1, an asphalt lower layer 2 and a roadbed 3, wherein the asphalt upper layer 1 is arranged on the top of the asphalt lower layer 2, and the asphalt lower layer 2 is arranged on the top of the roadbed 3, and an anti-cracking bonding structure 4 is arranged between the asphalt upper layer 1 and the asphalt lower layer 2, and between the asphalt lower layer 2 and the roadbed 3, and the bottom surface of the asphalt upper layer 1, the top surface of the asphalt lower layer 2 and the top surface of the roadbed 3 are all processed with mounting grooves 5;

[0030] Two anti-cracking adhesive structures 4 are respectively arranged inside the two installation grooves 5, and the anti-cracking adhesive structure 4 includes a crushed stone layer 401, an anti-cracking base cloth 402, an anti-cracking waterproof adhesive film 403 and a polymer modified anti-cracking sticker 404 which are sequentially distributed from top to bottom, and are used to improve the crack resistance between the asphalt upper layer 1 and the asphalt lower layer 2, and between the asphalt lower layer 2 and the roadbed 3;

[0031] Moreover, the gravel layer 401, the anti-crack base fabric 402, the anti-crack waterproof adhesive film 403 and the polymer modified anti-crack sticker 404 are all arranged in a wavy shape, so as to increase the contact area between the gravel layer 401, the anti-crack base fabric 402, the anti-crack waterproof adhesive film 403 and the polymer modified anti-crack sticker 404 and the installation groove, and the cross section of each installation groove 5 is arranged in a wavy shape, and the outer wall of the gravel layer 401 and the polymer modified anti-crack sticker 404 are respectively attached to the inner wall of the installation groove 5, so as to improve the tightness between the anti-crack adhesive structure 4 and the installation groove 5;

[0032] Specifically, the two gravel layers 401 each include two glass fiber grids 4011 distributed up and down, the two glass fiber grids 4011 are fixedly bonded to each other, and the glass fiber grid 4011 is fixedly bonded to the installation groove 5 and the anti-cracking base cloth 402. Specifically, the glass fiber is woven into the glass fiber grid 4011 using a warp knitting process. The glass fiber has the advantages of heat resistance, waterproofness, corrosion resistance and crack resistance. Therefore, as the glass fiber grid 4011, it has the advantages of heat resistance, waterproofness, corrosion resistance and crack resistance, thereby improving the strength of the anti-cracking adhesive structure 4.

[0033] Moreover, a large amount of crushed stones 4012 is stored between the two glass fiber grids 4011 , and the asphalt upper layer 1 and the asphalt lower layer 2 penetrate into the crushed stones 4012 to improve the firmness between the glass fiber grid 4011 and the asphalt upper layer 1 and the asphalt lower layer 2 .

[0034] By setting an anti-cracking adhesive structure 4 between the asphalt upper layer 1 and the asphalt lower layer 2, and between the asphalt lower layer 2 and the roadbed 3, the anti-cracking adhesive structure 4 is composed of a crushed stone layer 401, an anti-cracking base cloth 402, an anti-cracking waterproof adhesive film 403 and a polymer modified anti-cracking sticker 404, and the crushed stone layer 401 is formed by bonding two glass fiber grids 4011, and a large amount of crushed stone 4012 is placed between the two glass fiber grids 4011, and the crushed stone 4012 is used as a transition layer, so that the stability of the entire asphalt pavement can be improved. At the same time, the crushed stone 4012 has a permeability coefficient. When the asphalt upper layer 1 and the asphalt lower layer 2 are laid, the asphalt penetrates into the crushed stone 4012, so that the asphalt upper layer 1 and the asphalt lower layer 2 can be improved. The firmness between layer 1 and asphalt lower layer 2, asphalt lower layer 2 and roadbed 3, the anti-cracking base cloth 402 has isolation and anti-seepage, stress dispersion and adhesion, so as to improve the adhesion of the anti-cracking adhesive structure 4, the anti-cracking waterproof adhesive film 403 has interlayer adhesion, composite anti-cracking and waterproof properties, so it can improve the adhesion, crack resistance and waterproof properties of the anti-cracking adhesive structure 4, and then improve the adhesion, crack resistance and waterproof properties between the asphalt upper layer 1 and the asphalt lower layer 2, asphalt lower layer 2 and roadbed 3, the polymer modified anti-cracking sticker 404 also has interlayer crack resistance and waterproof properties, so it can further improve the adhesion, crack resistance and waterproof properties between the asphalt upper layer 1 and the asphalt lower layer 2, asphalt lower layer 2 and roadbed 3.

[0035] Refer to the instruction manual Figure 1-5 , a plurality of first plug holes 6 are provided on the inner wall of each installation groove 5, a plurality of first plug blocks 7 adapted to the first plug holes 6 are fixedly provided on the top outer walls of the two gravel layers 401 and the bottom outer walls of the two polymer modified anti-cracking stickers 404, and the plurality of first plug blocks 7 are respectively inserted into the plurality of first plug holes 6, so as to improve the firmness between the gravel layer 401, the polymer modified anti-cracking sticker 404 and the installation groove 5;

[0036] The bottom outer walls of the two gravel layers 401 and the top outer walls of the two polymer modified anti-cracking stickers 404 are fixed with second plug-in blocks 8, and the two anti-cracking base fabrics 402 and the two anti-cracking waterproof adhesive films 403 are provided with a plurality of second plug-in holes 9 adapted to the second plug-in blocks 8. The plurality of second plug-in blocks 8 are respectively inserted into the plurality of second plug-in holes 9 to improve the firmness between the gravel layers 401, the polymer modified anti-cracking stickers 404, the anti-cracking base fabrics 402 and the anti-cracking waterproof adhesive films 403;

[0037] Furthermore, each first plug-in block 7 and each second plug-in block 8 are made of rubber, which is soft and has a buffering effect;

[0038] By arranging a plurality of first plug blocks 7 and a plurality of second plug blocks 8 on both the gravel layer 401 and the polymer modified anti-cracking sticker 404, and utilizing the first plug blocks 7 to cooperate with the first plug holes 6, the firmness between the gravel layer 401 and the polymer modified anti-cracking sticker 404 and the installation groove 5 can be improved, and the plurality of second plug blocks 8 are respectively inserted into the plurality of second slots, so as to improve the firmness between the gravel layer 401, the polymer modified anti-cracking sticker 404, the anti-cracking base cloth 402 and the anti-cracking waterproof adhesive film 403, and the installation groove 5 is arranged in a wavy shape, and the gravel layer 401, the anti-cracking base cloth 402, the anti-cracking waterproof adhesive film 403 and the polymer modified anti-cracking sticker 404 are arranged in a wavy shape, so as to improve the tightness between the anti-cracking adhesive structure 4 and the installation groove 5, and then improve the firmness between the asphalt upper layer 1, the asphalt lower layer 2, the roadbed 3 and the anti-cracking adhesive structure 4.

[0039] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An anti-cracking bonding structure between asphalt pavement layers, characterized by: It comprises an asphalt upper layer (1), an asphalt lower layer (2) and a roadbed (3), wherein the asphalt upper layer (1) is arranged on the top of the asphalt lower layer (2), and the asphalt lower layer (2) is arranged on the top of the roadbed (3); An anti-cracking adhesive structure (4) is provided between the asphalt upper layer (1) and the asphalt lower layer (2), and between the asphalt lower layer (2) and the roadbed (3); the bottom surface of the asphalt upper layer (1), the top surface of the asphalt lower layer (2) and the top surface of the roadbed (3) are processed with mounting grooves (5); and two anti-cracking adhesive structures (4) are respectively provided inside the two mounting grooves (5); The anti-cracking adhesive structure (4) comprises a crushed stone layer (401), an anti-cracking base fabric (402), an anti-cracking waterproof adhesive film (403) and a polymer-modified anti-cracking sticker (404) which are sequentially distributed from top to bottom, and are used to improve the crack resistance between the asphalt upper layer (1) and the asphalt lower layer (2), and between the asphalt lower layer (2) and the roadbed (3).

2. The asphalt pavement interlayer crack-resistant bonding structure according to claim 1 is characterized by: The gravel layer (401), the anti-cracking base fabric (402), the anti-cracking and waterproof adhesive film (403) and the polymer-modified anti-cracking sticker (404) are all arranged in a wavy shape.

3. The asphalt pavement interlayer crack-resistant bonding structure according to claim 1 is characterized by: The cross section of each installation groove (5) is configured to be wavy, and the outer wall of the crushed stone layer (401) and the polymer-modified anti-cracking sticker (404) are respectively fitted to the inner wall of the installation groove (5).

4. The asphalt pavement interlayer crack-resistant bonding structure according to claim 1, characterized in that: The two gravel layers (401) each include two glass fiber grids (4011) distributed up and down, the two glass fiber grids (4011) are fixedly bonded to each other, and the glass fiber grids (4011) are fixedly bonded to the installation groove (5) and the anti-cracking base cloth (402).

5. The asphalt pavement interlayer crack-resistant bonding structure according to claim 4 is characterized by: Gravel (4012) is stored between the two glass fiber grids (4011), and the upper asphalt layer (1) and the lower asphalt layer (2) penetrate into the gravel (4012) to improve the firmness between the glass fiber grid (4011) and the upper asphalt layer (1) and the lower asphalt layer (2).

6. The asphalt pavement interlayer crack-resistant bonding structure according to claim 3 is characterized by: A plurality of first plug holes (6) are provided on the inner wall of each installation groove (5); a plurality of first plug blocks (7) adapted to the first plug holes (6) are fixedly provided on the top outer walls of the two crushed stone layers (401) and the bottom outer walls of the two polymer modified anti-cracking stickers (404); the plurality of first plug blocks (7) are respectively inserted into the plurality of first plug holes (6) to improve the firmness between the crushed stone layers (401), the polymer modified anti-cracking stickers (404) and the installation groove (5).

7. The asphalt pavement interlayer crack-resistant bonding structure according to claim 6 is characterized by: Second plug-in blocks (8) are fixedly provided on the bottom outer walls of the two crushed stone layers (401) and the top outer walls of the two polymer modified anti-cracking stickers (404); a plurality of second plug-in holes (9) adapted to the second plug-in blocks (8) are provided on the two anti-cracking base fabrics (402) and the two anti-cracking waterproof adhesive films (403); the plurality of second plug-in blocks (8) are respectively inserted into the plurality of second plug-in holes (9) to improve the firmness between the crushed stone layers (401), the polymer modified anti-cracking stickers (404), the anti-cracking base fabrics (402) and the anti-cracking waterproof adhesive films (403).

8. The asphalt pavement interlayer crack-resistant bonding structure according to claim 1, characterized in that: Each first plug-in block (7) and each second plug-in block (8) are made of rubber.

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