Asphalt concrete pavement capable of avoiding cracking

Abstract

The utility model provides an asphalt concrete pavement capable of avoiding cracking, which relates to the technical field of asphalt pavements and comprises an asphalt concrete layer and a roadbed layer, a rubble layer is paved on the roadbed layer, a cement base layer is paved on the rubble layer, a connecting layer is paved on the cement base layer, and the connecting layer is arranged on the connecting layer. The asphalt concrete layer is laid above the connecting layer; the asphalt concrete layer comprises fine-grain asphalt concrete and coarse-grain asphalt concrete; the gravel layer, the cement base layer and the connecting layer serve as supporting layers to be laid on the roadbed layer, the asphalt concrete layer is laid on the surface, the asphalt concrete layer is composed of the two sides of the fine-grain asphalt concrete and the two sides of the coarse-grain asphalt concrete, and the fiber nets are distributed in the fine-grain asphalt concrete, so that the toughness of the surface layer is improved; steel bars are distributed on the coarse-grained asphalt concrete, the strength of the bottom layer is improved, the fiber net and the steel bars are wound through fiber rings, the fiber net and the steel bars are integrally stressed, the stability of the surface layer and the bottom layer is synchronously enhanced, and cracking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement, in particular to an asphalt concrete pavement capable of avoiding cracking. Background Art

[0002] Asphalt concrete pavement refers to a pavement with asphalt concrete as the surface layer. It is a mixture of artificially selected mineral materials (crushed stone or crushed gravel, stone chips or sand, mineral powder, etc.) with a certain graded composition and a certain proportion of road asphalt materials, mixed under strictly controlled conditions, and is widely used for road paving;

[0003] During the long-term use of asphalt concrete pavement, due to the characteristics of asphalt concrete, excessive vehicle loads are prone to load-type cracks; when affected by temperature and temperature difference changes, thermal expansion and contraction are prone to occur, resulting in cracks in the asphalt concrete pavement. Such cracks affect the aesthetics of the pavement and also affect the normal driving of residents. The asphalt concrete pavement of the prior art is generally composed of several layers. In the treatment of cracks, the surface layer is generally reinforced, and the inner layer is not treated, which only treats the symptoms but not the root cause. The overall pavement is still not stable enough. Therefore, the utility model proposes an asphalt concrete pavement that can avoid cracking to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model proposes an asphalt concrete pavement that can avoid cracking. The asphalt concrete pavement that can avoid cracking has fiber mesh distributed in the granular asphalt concrete to increase the toughness of the surface layer, and steel bars distributed in the coarse-grained asphalt concrete to increase the strength of the bottom layer. Fiber rings are wound between the fiber mesh and the steel bars so that the two are subjected to force as a whole, thereby simultaneously enhancing the stability of the surface layer and the bottom layer to avoid cracking.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical scheme: an asphalt concrete pavement that can avoid cracking, comprising an asphalt concrete layer and a road base layer, a crushed stone layer is laid on the road base layer, a cement base layer is laid on the crushed stone layer, a connecting layer is laid on the cement base layer, and the asphalt concrete layer is laid on the connecting layer;

[0006] The asphalt concrete layer includes fine-grained asphalt concrete and coarse-grained asphalt concrete. The fine-grained asphalt concrete is laid on top of the coarse-grained asphalt concrete. A fiber mesh is distributed inside the fine-grained asphalt concrete, and fiber rings are connected to the intersections of the fiber meshes. The fiber rings extend to the inside of the coarse-grained asphalt concrete, and steel bars are provided on the inner side of the fiber rings. The steel bars are arranged inside the coarse-grained asphalt concrete.

[0007] A further improvement is that the thickness of the coarse-grained asphalt concrete is greater than the thickness of the fine-grained asphalt concrete, and the fiber mesh is provided with at least one layer.

[0008] A further improvement is that the fiber mesh includes main fiber units and connecting fiber bands, the main fiber units are provided with multiple groups, and the main fiber units are 8-shaped, the two adjacent groups of main fiber units in the longitudinal direction are staggered and interwoven, and the two adjacent groups of main fiber units in the transverse direction are connected by winding with connecting fiber bands.

[0009] A further improvement is that the fiber loops are interlaced and wound at the 8-shaped intersections of the main fiber units, and the main fiber units, connecting fiber bands and fiber loops are all one of polyester fibers or polypropylene fibers.

[0010] A further improvement is that: the steel bars are provided in multiple groups, and connecting bars are provided between two adjacent groups of the steel bars.

[0011] A further improvement is that the connecting layer includes a modified asphalt filling layer and rubber particle balls, the rubber particle balls are provided in multiple groups, and the rubber particle balls are uniformly filled inside the modified asphalt filling layer.

[0012] A further improvement is that curbs are provided on both sides of the top of the road base layer, and the curbs on both sides are respectively attached to both sides of the asphalt concrete layer, gravel layer, cement base layer and connecting layer, and water permeable holes are provided on the curbs, and multiple groups of water permeable holes are equidistantly provided.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model is laid on the road base layer through a crushed stone layer, a cement base layer and a connecting layer as a supporting layer, and is laid on the surface through an asphalt concrete layer. The asphalt concrete layer is composed of fine-grained asphalt concrete and coarse-grained asphalt concrete on both sides. Fiber mesh is distributed in the fine-grained asphalt concrete to increase the toughness of the surface layer, and steel bars are distributed in the coarse-grained asphalt concrete to increase the strength of the bottom layer. Fiber rings are wound between the fiber mesh and the steel bars, so that the two are subjected to force in an integrated manner, and the stability of the surface layer and the bottom layer is simultaneously enhanced to avoid cracking.

[0015] 2. The fiber mesh of the utility model is composed of main fiber units and connecting fiber belts. The main fiber units are in an 8-shape and staggered and interwoven. The connecting fiber belts are wound and connected between the main fiber units. The fiber loops are interspersed and wound at the 8-shaped intersections of the main fiber units, making the connection tighter and not easy to break, thereby ensuring the toughness function.

[0016] 3. The connection layer of the utility model is composed of a modified asphalt filling layer filled with rubber granular balls, which increases the buffering performance of the support and has diversified functions.

[0017] 4. The utility model blocks the two sides with the curb, and can discharge water through the water-permeable holes to reduce water siltation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 This is a schematic diagram of the composition of the asphalt concrete layer of the utility model;

[0020] Figure 3 It is a schematic diagram of the fiber web of the utility model;

[0021] Figure 4 It is a schematic diagram of the connection layer composition of the utility model.

[0022] Among them: 1. Asphalt concrete layer; 2. Road base layer; 3. Gravel layer; 4. Cement base layer; 5. Connecting layer; 6. Fine-grained asphalt concrete; 7. Coarse-grained asphalt concrete; 8. Fiber ring; 9. Steel bar; 10. Main fiber unit; 11. Connecting fiber belt; 12. Modified asphalt filling layer; 13. Rubber particle ball; 14. Curb; 15. Water-permeable hole; 16. Connecting rib. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0024] Embodiment 1

[0025] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes an asphalt concrete pavement that can avoid cracking, comprising an asphalt concrete layer 1 and a road base layer 2, a crushed stone layer 3 is laid on the road base layer 2, a cement base layer 4 is laid on the crushed stone layer 3, a connecting layer 5 is laid on the cement base layer 4, and the asphalt concrete layer 1 is laid on the connecting layer 5;

[0026] The asphalt concrete layer 1 includes fine-grained asphalt concrete 6 and coarse-grained asphalt concrete 7. The fine-grained asphalt concrete 6 is laid on the top of the coarse-grained asphalt concrete 7. A fiber mesh is distributed inside the fine-grained asphalt concrete 6, and a fiber ring 8 is connected to the intersection of the fiber mesh. The fiber ring 8 extends to the inside of the coarse-grained asphalt concrete 7, and a steel bar 9 is provided inside the fiber ring 8. The steel bar 9 is provided inside the coarse-grained asphalt concrete 7. When in use, the crushed stone 3 layer, cement base layer 4 and connecting layer 5 are laid on the road base as a supporting layer, and the asphalt concrete layer 1 is laid on the surface. The asphalt concrete layer 1 is composed of fine-grained asphalt concrete 6 and coarse-grained asphalt concrete 7 on both sides. The fiber mesh is distributed in the fine-grained asphalt concrete 6 to increase the toughness of the surface layer, and the steel bar 9 is distributed in the coarse-grained asphalt concrete 7 to increase the strength of the bottom layer. The fiber mesh and the steel bar 9 are wound by the fiber ring 8, so that the two are subjected to force in an integrated manner, and the stability of the surface layer and the bottom layer is enhanced synchronously to avoid cracking.

[0027] The thickness of the coarse-grained asphalt concrete 7 is greater than that of the fine-grained asphalt concrete 6, and the fiber net is provided with two layers. The fiber nets on both sides have stronger toughness and are not easy to break.

[0028] The fiber mesh includes a main fiber unit 10 and a connecting fiber band 11. The main fiber unit 10 is provided with multiple groups, and the main fiber unit 10 is in an 8-shaped shape. Two adjacent groups of the main fiber units 10 in the longitudinal direction are staggered and interlaced, and two adjacent groups of the main fiber units 10 in the transverse direction are wound and connected by the connecting fiber band 11. The fiber loops 8 are interspersed and wound at the 8-shaped intersections of the main fiber units 10. The main fiber units 10, the connecting fiber bands 11 and the fiber loops 8 are all polypropylene fibers. The fiber mesh is composed of the main fiber units 10 and the connecting fiber bands 11. The main fiber units 10 are in an 8-shaped shape and staggered and interlaced. The connecting fiber bands 11 are wound and connected between the main fiber units 10. The fiber loops 8 are interspersed and wound at the 8-shaped intersections of the main fiber units 10, so that the connection is tighter and not easy to break, ensuring the toughness function.

[0029] The steel bars 9 are provided in multiple groups, and connecting bars 16 are connected between two adjacent groups of the steel bars 9. The connecting bars 16 are connected between the steel bars 9 to ensure the spacing between the two adjacent groups of steel bars 9, and simultaneously enhance the connection strength between the two adjacent groups of steel bars 9, thereby improving the strength of the asphalt concrete layer 1.

[0030] Embodiment 2

[0031] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes an asphalt concrete pavement that can avoid cracking, comprising an asphalt concrete layer 1 and a road base layer 2, a crushed stone layer 3 is laid on the road base layer 2, a cement base layer 4 is laid on the crushed stone layer 3, a connecting layer 5 is laid on the cement base layer 4, and the asphalt concrete layer 1 is laid on the connecting layer 5;

[0032] The asphalt concrete layer 1 includes fine-grained asphalt concrete 6 and coarse-grained asphalt concrete 7. The fine-grained asphalt concrete 6 is laid on the top of the coarse-grained asphalt concrete 7. A fiber mesh is distributed inside the fine-grained asphalt concrete 6, and a fiber ring 8 is connected to the intersection of the fiber mesh. The fiber ring 8 extends to the inside of the coarse-grained asphalt concrete 7, and a steel bar 9 is provided inside the fiber ring 8. The steel bar 9 is provided inside the coarse-grained asphalt concrete 7. When in use, the crushed stone 3 layer, cement base layer 4 and connecting layer 5 are laid on the road base as a supporting layer, and the asphalt concrete layer 1 is laid on the surface. The asphalt concrete layer 1 is composed of fine-grained asphalt concrete 6 and coarse-grained asphalt concrete 7 on both sides. The fiber mesh is distributed in the fine-grained asphalt concrete 6 to increase the toughness of the surface layer, and the steel bar 9 is distributed in the coarse-grained asphalt concrete 7 to increase the strength of the bottom layer. The fiber mesh and the steel bar 9 are wound by the fiber ring 8, so that the two are subjected to force in an integrated manner, and the stability of the surface layer and the bottom layer is enhanced synchronously to avoid cracking.

[0033] The thickness of the coarse-grained asphalt concrete 7 is greater than that of the fine-grained asphalt concrete 6, and the fiber net is provided with two layers. The fiber nets on both sides have stronger toughness and are not easy to break.

[0034] The connecting layer 5 includes a modified asphalt filling layer 12 and rubber granule balls 13. The rubber granule balls 13 are provided in multiple groups, and the rubber granule balls 13 are uniformly filled in the modified asphalt filling layer 12. The connecting layer 5 is supported in the middle, and is composed of the modified asphalt filling layer 12 filled with rubber granule balls 13, which increases the buffering performance of the support and has diversified functions.

[0035] Both sides of the top of the road base 2 are provided with curbs 14, and the curbs 14 on both sides are respectively attached to both sides of the asphalt concrete layer 1, the crushed stone layer 3, the cement base 4, and the connecting layer 5. The curbs 14 are provided with water-permeable holes 15, and multiple groups of water-permeable holes 15 are equidistantly arranged. The curbs 14 are blocked on both sides, and water can be discharged through the water-permeable holes 15 to reduce water siltation.

[0036] The asphalt concrete pavement which can avoid cracking is paved on the road base with 3 layers of crushed stone, 4 layers of cement base and 5 layers of connection as supporting layers, and is paved on the surface with an asphalt concrete layer 1, which is composed of two sides of fine-grained asphalt concrete 6 and coarse-grained asphalt concrete 7, and fiber mesh is distributed in the fine-grained asphalt concrete 6 to increase the toughness of the surface layer, and steel bars 9 are distributed in the coarse-grained asphalt concrete 7 to increase the strength of the bottom layer, and fiber rings 8 are wound between the fiber mesh and the steel bars 9, so that the two are subjected to force in an integrated manner, and the stability of the surface layer and the bottom layer is enhanced synchronously to avoid cracking, and the fiber mesh of this product is composed of a main fiber unit 10 and a connecting fiber belt 11, the main fiber unit 10 is 8-shaped and staggered and interwoven, the connecting fiber belt 11 is wound and connected between the main fiber units 10, and the fiber ring 8 is interlaced and wound at the 8-shaped intersection of the main fiber unit 10, so that the connection is tighter and not easy to break, and the toughness function is guaranteed. At the same time, the connecting layer 5 of this product is composed of a modified asphalt filling layer 12 filled with rubber granular balls 13, which increases the buffering performance of the support and has diversified functions. In addition, the product is blocked on both sides by the curb 14, and water can be discharged through the water-permeable holes 15 to reduce water siltation.

[0037] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An asphalt concrete pavement capable of avoiding cracking, comprising an asphalt concrete layer (1) and a road base layer (2), characterized in that: A crushed stone layer (3) is laid on the road base layer (2), a cement base layer (4) is laid on the crushed stone layer (3), a connecting layer (5) is laid on the cement base layer (4), and the asphalt concrete layer (1) is laid on the connecting layer (5); The asphalt concrete layer (1) comprises fine-grained asphalt concrete (6) and coarse-grained asphalt concrete (7), wherein the fine-grained asphalt concrete (6) is laid on top of the coarse-grained asphalt concrete (7), a fiber mesh is distributed inside the fine-grained asphalt concrete (6), and a fiber ring (8) is connected to the intersection of the fiber mesh, the fiber ring (8) extends to the inside of the coarse-grained asphalt concrete (7), and a steel bar (9) is provided on the inner side of the fiber ring (8), and the steel bar (9) is arranged inside the coarse-grained asphalt concrete (7).

2. The asphalt concrete pavement capable of avoiding cracking according to claim 1, characterized in that: The thickness of the coarse-grained asphalt concrete (7) is greater than the thickness of the fine-grained asphalt concrete (6), and the fiber mesh is provided with at least one layer.

3. The asphalt concrete pavement capable of avoiding cracking according to claim 2, characterized in that: The fiber web comprises main fiber units (10) and connecting fiber bands (11); the main fiber units (10) are provided in a plurality of groups, and the main fiber units (10) are in an 8-shape; two longitudinally adjacent groups of the main fiber units (10) are staggered and interwoven, and two transversely adjacent groups of the main fiber units (10) are wound and connected by connecting fiber bands (11).

4. The asphalt concrete pavement capable of avoiding cracking according to claim 3, characterized in that: The fiber loops (8) are interlaced and wound around the 8-shaped intersection of the main fiber unit (10); the main fiber unit (10), the connecting fiber band (11) and the fiber loops (8) are all made of polyester fiber or polypropylene fiber.

5. The asphalt concrete pavement capable of avoiding cracking according to claim 4, characterized in that: The steel bars (9) are provided in a plurality of groups, and connecting bars (16) are provided between two adjacent groups of the steel bars (9).

6. The asphalt concrete pavement capable of avoiding cracking according to claim 1, characterized in that: The connecting layer (5) comprises a modified asphalt filling layer (12) and rubber particle balls (13), wherein the rubber particle balls (13) are provided in a plurality of groups, and the rubber particle balls (13) are uniformly filled inside the modified asphalt filling layer (12).

7. The asphalt concrete pavement capable of avoiding cracking according to claim 1, characterized in that: Curbs (14) are provided on both sides of the top of the road base (2), and the curbs (14) on both sides are respectively attached to both sides of the asphalt concrete layer (1), the crushed stone layer (3), the cement base (4), and the connecting layer (5). Water permeable holes (15) are provided on the curbs (14), and a plurality of groups of water permeable holes (15) are equidistantly arranged.

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