Pavement regeneration structure

Abstract

The utility model discloses a pavement recycling structure which comprises a recycled aggregate pervious concrete layer, a gravel component layer is laid on the upper surface of the recycled aggregate pervious concrete layer, a recycled asphalt sealing layer is laid on the upper surface of the gravel component layer, and an asphalt surface layer is laid on the upper surface of the recycled asphalt sealing layer. An anti-dark ice coating layer is laid on the upper surface of the asphalt surface layer; the gravel assembly layer is composed of an upper gravel layer, a bamboo rib layer and a lower gravel layer, and the bamboo rib layer is located between the upper gravel layer and the lower gravel layer. According to the utility model, the recycled aggregate pervious concrete layer is arranged at the bottom, so that the strength of the pavement is improved, the collapse of the pavement is prevented to a certain extent, and the fracture and cracking of the pavement are prevented to a great extent through the arrangement of the steel mesh and the bamboo rib layer; the gravel layer can quickly drain water in the pavement structure, so that the pavement is prevented from being damaged by the water, and the pavement structure is prevented from cracking.

Description

Technical Field

[0001] The utility model relates to the technical field of pavement structures, in particular to a pavement regeneration structure. Background Art

[0002] With the rapid development of my country's economy and society, the traffic volume is increasing. The highways built in the early days have gradually entered the period of major repair, medium repair, reconstruction or expansion. A large amount of asphalt pavement materials that were dug and milled during construction were discarded, which caused environmental pollution on the one hand and was a waste of resources on the other hand. If these waste asphalt pavement materials can be recycled and reused, it will save at least hundreds of millions of yuan in material expenses every year, which is conducive to the promotion of green construction. Therefore, the application of emulsified asphalt cold recycling construction technology was born.

[0003] The existing publication number CN112301826B discloses an emulsified asphalt cold regenerated pavement structure and a rapid curing method for the pavement, comprising a compacted structure and a newly paved structure, wherein a joint is provided between the compacted structure and the newly paved structure, and the compacted structure and the newly paved structure both comprise an asphalt upper layer, an asphalt middle layer, an asphalt lower layer, a sealing layer and a road base layer from top to bottom; the asphalt upper layer is SMA-13 ​​asphalt, with a thickness of 4 cm; the asphalt middle layer is AC-20 asphalt, with a thickness of 6 cm; the asphalt lower layer is AC-25 asphalt, with a thickness of 8 cm; the sealing layer is SBS modified asphalt; the road base layer comprises an emulsified asphalt cold regenerated base layer, a cement stabilized gravel base layer and a cement stabilized gravel subbase layer; the emulsified asphalt cold regenerated base layer is an emulsified asphalt cold regenerated mixture.

[0004] The existing regenerated pavement is prone to sinking and loosening, and is prone to cracking and damage. In order to solve the above technical problems, we propose a pavement regeneration structure. Utility Model Content

[0005] The utility model aims to provide a road surface regeneration structure to solve the problem that the regenerated road surface in the prior art is prone to sinking, loosening, cracking and damage.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pavement regeneration structure, including a recycled aggregate permeable concrete layer, a recycled aggregate permeable concrete layer is arranged at the bottom, the strength of the pavement is improved, and the collapse of the pavement is prevented to a certain extent, the upper surface of the recycled aggregate permeable concrete layer is paved with a crushed stone component layer, the crushed stone component layer can quickly discharge the water inside the pavement structure, prevent the water from damaging the pavement, and thus prevent the pavement structure from cracking, the upper surface of the crushed stone component layer is paved with a recycled asphalt seal layer, the upper surface of the recycled asphalt seal layer is paved with an asphalt surface layer, and the upper surface of the asphalt surface layer is paved with an anti-dark ice coating layer; the crushed stone component layer is composed of an upper crushed stone layer, a bamboo reinforcement layer and a lower crushed stone layer, and the bamboo reinforcement layer is located between the upper crushed stone layer and the lower crushed stone layer.

[0007] Preferably, the asphalt surface layer consists of an upper layer, a middle layer and a lower layer, which are arranged in sequence from top to bottom. Tack coat oil is sprayed between the upper layer and the middle layer, and tack coat oil is sprayed between the middle layer and the lower layer to improve the strength of the connection between the layers.

[0008] Preferably, the thicknesses of the upper layer, the middle layer and the lower layer increase sequentially from top to bottom.

[0009] Preferably, it also includes a steel mesh, which is laid flat in the middle of the lower gravel layer. The thickness of the lower gravel layer is greater than that of the upper gravel layer. The arrangement of the steel mesh and the bamboo reinforcement layer can prevent the road surface from breaking and cracking to a great extent.

[0010] Preferably, the thickness of the recycled aggregate permeable concrete layer is 15-20 cm; the thickness of the crushed stone component layer is 20-25 cm; the thickness of the recycled asphalt seal layer is 15-20 cm; the thickness of the upper layer is 5-8 cm, the thickness of the middle layer is 8-11 cm, and the thickness of the lower layer is 11-14 cm.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. Setting a recycled aggregate permeable concrete layer at the bottom improves the strength of the road surface and prevents road collapse to a certain extent.

[0013] 2. The gravel component layer consists of an upper gravel layer, a bamboo reinforcement layer and a lower gravel layer. The steel mesh is laid flat in the middle of the lower gravel layer. The setting of the steel mesh and the bamboo reinforcement layer can prevent the breakage and cracking of the road surface to a great extent. The gravel layer can quickly drain the water inside the pavement structure to prevent water from damaging the road surface and thus prevent the pavement structure from cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the crushed stone component layer of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the asphalt surface layer of the utility model.

[0018] In the figure: 1, roadbed; 2, recycled aggregate permeable concrete layer; 3, crushed stone component layer; 4, recycled asphalt seal layer; 5, asphalt surface layer; 6, anti-dark ice coating layer; 31, upper crushed stone layer; 32, bamboo reinforcement layer; 33, lower crushed stone layer; 51, upper layer; 52, middle layer; 53, lower layer. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0020] See also Figure 1-3 In an embodiment of the utility model, a pavement regeneration structure includes a recycled aggregate permeable concrete layer 2, the thickness of the recycled aggregate permeable concrete layer 2 is 15-20 cm, which improves the strength of the pavement and prevents the collapse of the pavement to a certain extent; a crushed stone component layer 3 is paved on the upper surface of the recycled aggregate permeable concrete layer 2, the thickness of the crushed stone component layer 3 is 20-25 cm; a recycled asphalt seal layer 4 is paved on the upper surface of the crushed stone component layer 3, the thickness of the recycled asphalt seal layer 4 is 15-20 cm; an asphalt surface layer 5 is paved on the upper surface of the recycled asphalt seal layer 4, and an anti-dark ice coating layer 6 is paved on the upper surface of the asphalt surface layer 5, so as to improve the anti-freeze cracking performance of the pavement.

[0021] The gravel assembly layer 3 is composed of an upper gravel layer 31, a bamboo reinforcement layer 32 and a lower gravel layer 33, wherein the bamboo reinforcement layer 32 is located between the upper gravel layer 31 and the lower gravel layer 33; the steel mesh is laid flat in the middle of the lower gravel layer 33, and the thickness of the lower gravel layer 33 is greater than that of the upper gravel layer 31. The arrangement of the steel mesh and the bamboo reinforcement layer 32 can prevent the breakage and cracking of the road surface to a great extent; the gravel layer can quickly drain the water inside the road surface structure, prevent the water from damaging the road surface, and further prevent the road surface structure from cracking.

[0022] The asphalt surface layer 5 is composed of an upper layer 51, a middle layer 52 and a lower layer 53, which are arranged in sequence from top to bottom. Tack coat oil is sprayed between the upper layer 51 and the middle layer 52, and tack coat oil is sprayed between the middle layer 52 and the lower layer 53 to improve the connection strength of each layer; the thickness of the upper layer 51, the middle layer 52 and the lower layer 53 increases in sequence from top to bottom; the thickness of the upper layer 51 is 5-8cm, the thickness of the middle layer 52 is 8-11cm, and the thickness of the lower layer 53 is 11-14cm. The particle sizes of the upper layer 51, the middle layer 52 and the lower layer 53 increase in sequence, and the service life of the road surface is improved through the joint action of the upper layer 51, the middle layer 52 and the lower layer 53.

[0023] The working principle of the utility model is: a recycled aggregate permeable concrete layer 2, a crushed stone component layer 3, a recycled asphalt seal layer 4, an asphalt surface layer 5, and an anti-dark ice coating layer 6 are laid in sequence on a roadbed 1; a bamboo reinforcement layer 32 is located between an upper crushed stone layer 31 and a lower crushed stone layer 33; a steel mesh is laid flat in the middle of the lower crushed stone layer 33, and the thickness of the lower crushed stone layer 33 is greater than that of the upper crushed stone layer 31. By arranging the steel mesh and the bamboo reinforcement layer 32, the rupture and cracking of the road surface are prevented to a great extent; the crushed stone layer can quickly discharge the water inside the road surface structure to prevent the water from damaging the road surface, thereby preventing the road surface structure from cracking.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pavement regeneration structure, comprising a recycled aggregate permeable concrete layer (2), characterized in that: A crushed stone component layer (3) is laid on the upper surface of the recycled aggregate permeable concrete layer (2), a recycled asphalt seal layer (4) is laid on the upper surface of the crushed stone component layer (3), an asphalt surface layer (5) is laid on the upper surface of the recycled asphalt seal layer (4), and an anti-dark ice coating layer (6) is laid on the upper surface of the asphalt surface layer (5); the crushed stone component layer (3) consists of an upper crushed stone layer (31), a bamboo reinforcement layer (32) and a lower crushed stone layer (33), and the bamboo reinforcement layer (32) is located between the upper crushed stone layer (31) and the lower crushed stone layer (33).

2. A pavement regeneration structure according to claim 1, characterized in that: The asphalt surface layer (5) is composed of an upper layer (51), a middle layer (52) and a lower layer (53), and the upper layer (51), the middle layer (52) and the lower layer (53) are arranged in sequence from top to bottom. A tack coat oil is sprayed between the upper layer (51) and the middle layer (52), and a tack coat oil is sprayed between the middle layer (52) and the lower layer (53).

3. A pavement regeneration structure according to claim 2, characterized in that: The thicknesses of the upper layer (51), the middle layer (52) and the lower layer (53) increase sequentially from top to bottom.

4. A pavement regeneration structure according to claim 1, characterized in that: It also comprises a steel mesh, which is laid flat in the middle of the lower crushed stone layer (33), and the thickness of the lower crushed stone layer (33) is greater than the thickness of the upper crushed stone layer (31).

5. A pavement regeneration structure according to claim 2, characterized in that: The thickness of the recycled aggregate permeable concrete layer (2) is 15-20 cm; the thickness of the crushed stone component layer (3) is 20-25 cm; the thickness of the recycled asphalt seal layer (4) is 15-20 cm; the thickness of the upper layer (51) is 5-8 cm, the thickness of the middle layer (52) is 8-11 cm, and the thickness of the lower layer (53) is 11-14 cm.

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