High-toughness low-noise ultrathin asphalt wearing layer pavement structure

Abstract

The utility model discloses a high-toughness low-noise ultrathin asphalt wearing layer pavement structure, which belongs to the technical field of asphalt pavements, aims at solving the problem that the service life of the pavement and the surrounding living life are influenced by low pavement toughness and high noise, and comprises a base layer and a metal woven mesh, the metal woven mesh is paved on the top surface of the base layer, and a subbase layer is arranged right above the base layer; the top face of the metal woven mesh makes contact with the ground of the subbase layer, a waterproof adhesion layer is arranged on the top face of the subbase layer, and an asphalt concrete layer is laid over the waterproof adhesion layer. The asphalt pavement glass fiber grating has excellent heat insulation performance, can effectively reduce road traffic noise and air pollutant emission, also has a good isolation effect, can prevent external objects from entering a vehicle to cause safety problems, can effectively improve the road beauty, and has a good application prospect. And meanwhile, the materials have the advantages of high impact resistance and high wear resistance, so that the materials are very easy to repair or replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of asphalt pavement, and in particular relates to a high-toughness, low-noise, ultra-thin asphalt wearing layer pavement structure. Background Art

[0002] Cities have the characteristics of large population, small land area and frequent activities, which require crisscrossing road networks to facilitate people's travel. The dense road network (noise) is in conflict with the requirements of the living environment (quality, health). Data show that for every 1 decibel increase in traffic noise, the value of land decreases by about 0.08% to 1.26%. It can be seen that reducing road noise can increase the utilization value of land and play a positive role in the development of land along the line and the economic construction of the entire region.

[0003] The publication number of the comparative patent document is: "CN211972953U high-toughness, low-noise, ultra-thin asphalt wear layer pavement structure. The upper surface of the asphalt base pavement is inlaid and fixed with a crushed stone particle embedding layer, and a layer of reinforcing mesh membrane one is laid on the upper end of the crushed stone particle embedding layer; the upper end of the reinforcing mesh membrane one is provided with an SBS modified emulsified asphalt adhesive layer, and the upper end of the SBS modified emulsified asphalt adhesive layer is laid with a reinforcing mesh membrane two, and the upper end of the reinforcing mesh membrane two is provided with an ultra-thin wear layer. It adds a double-layer grid layer inside the SBS modified emulsified asphalt adhesive layer, increases the prestress of the horizontal translation of the SBS modified emulsified asphalt adhesive layer, and improves the pressure resistance of the asphalt pavement." The above patent document, but in actual use, there are still the following problems: The current existing asphalt pavement, due to the factors of low toughness and high noise of the asphalt pavement, affects the service life of the urban pavement, and is prone to cause noise generated by tires and pavement when driving in the city, which not only affects the utilization value of the land, but also affects the living environment of the surrounding people.

[0004] Therefore, a high-toughness, low-noise, ultra-thin asphalt wear layer pavement structure is needed to solve the problems in the prior art of low pavement toughness and high noise that affect the pavement life and the lives of surrounding residents. Utility Model Content

[0005] The utility model aims to provide a high-toughness, low-noise, ultra-thin asphalt wearing layer pavement structure to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a high-toughness, low-noise, ultra-thin asphalt wear layer pavement structure, including a base layer, and also including

[0007] A metal woven mesh is laid on the top surface of the base layer, a subbase layer is arranged directly above the base layer, the top surface of the metal woven mesh is in contact with the ground of the subbase layer, a waterproof adhesion layer is arranged on the top surface of the subbase layer, an asphalt concrete layer is laid directly above the waterproof adhesion layer, a glass fiber grille is arranged on the top surface of the asphalt concrete layer, and a top surface layer is arranged on the top surface of the glass fiber grille.

[0008] It should be further explained that the base material is composed of crushed stone, sand, concrete and cement, the thickness of the base is about 20-25 cm, and the thickness of the base is greater than the thickness of the subbase.

[0009] As a preferred implementation manner, the thickness of the waterproof adhesion layer and the glass fiber grille are consistent, and the thickness of the asphalt concrete layer is greater than the total thickness of the waterproof adhesion layer and the glass fiber grille.

[0010] As a preferred embodiment, an SBS modified emulsified asphalt adhesive layer is provided between the glass fiber grid and the top surface layer, the aggregate particle size in the asphalt concrete layer is about 0.5 to 1 cm, and an adhesive layer oil is provided between the asphalt concrete layer and the waterproof adhesive layer.

[0011] Compared with the prior art, the high-toughness, low-noise, ultra-thin asphalt wearing layer pavement structure provided by the utility model has at least the following beneficial effects:

[0012] (1) Glass fiber grating has excellent thermal insulation properties, which can effectively reduce road traffic noise and air pollutant emissions. In addition, it has a good isolation effect and can prevent external objects from entering the vehicle and causing safety problems. The use of asphalt pavement glass fiber grating can effectively improve the appearance of the road. At the same time, these materials have the advantages of strong impact resistance and high wear resistance, so they can be easily repaired or replaced.

[0013] (2) By setting the porosity of the top surface layer, the voids are fully permeable. The high-speed airflow squeezed in the first process of the pumping effect will not be released into the atmosphere, but will be pressed into the fully permeable pores of the road surface and diffuse rapidly, thereby reducing the noise generated by the road surface during driving and reducing the intensity of the sound source. When the sound wave is incident on the porous noise reduction road surface, the acoustic impedance of the road surface structure is changed due to the presence of a large porosity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 3It is a schematic diagram of the side section structure of the utility model.

[0017] In the figure: 1. base layer; 2. metal woven mesh; 3. subbase layer; 4. waterproof bonding layer; 5. asphalt concrete layer; 6. glass fiber grid; 7. top surface layer; 8. SBS modified emulsified asphalt bonding layer; 9. bonding layer oil. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with embodiments.

[0019] See also Figure 1-3 The utility model provides a high-toughness, low-noise, ultra-thin asphalt wear layer pavement structure, including a base layer 1 and a metal woven mesh 2. The metal woven mesh 2 is laid on the top surface of the base layer 1. The metal woven mesh 2 is used to reinforce the base layer 1 and the subbase layer 3 to form a more complete pavement structure. The wire mesh can increase the stability and durability of the subbase layer 3, thereby extending the service life of the pavement. The subbase layer 3 is arranged directly above the base layer 1. The top surface of the metal woven mesh 2 is in contact with the ground of the subbase layer 3. The top surface of the subbase layer 3 is provided with a waterproof adhesion layer 4. An asphalt concrete layer 5 is laid directly above the waterproof adhesion layer 4. A glass fiber grille 6 is arranged on the top surface of the asphalt concrete layer 5, and a top surface layer 7 is arranged on the top surface of the glass fiber grille 6.

[0020] Further Figure 1 , Figure 2 and Figure 3 As shown, it is worth mentioning that the thickness of the glass fiber grille 6 is consistent with the thickness of the waterproof adhesion layer 4, and the thickness of the glass fiber grille 6 is about 0.3-1.2 mm. The glass fiber grille 6 has excellent thermal insulation performance, which can effectively reduce road traffic noise and air pollutant emissions. In addition, it has a good isolation effect and can prevent external objects from entering the interior of the vehicle and causing safety problems. The use of asphalt pavement glass fiber grille 6 can effectively improve the appearance of the road. At the same time, these materials have the advantages of strong impact resistance and high wear resistance, so they are easy to repair or replace.

[0021] Further Figure 1 , Figure 2 and Figure 3 As shown, it is worth specifying that the material of the top surface layer 7 is composed of asphalt, aggregate, aging agent, modifier and rubber powder. The porosity of the top surface layer 7 after compaction is about 20%-25%. Through the porosity setting of the top surface layer 7, the voids are full-pass voids. The high-speed airflow squeezed in the first process of the pumping effect will not be released into the atmosphere, but will be pressed into the full-pass pores of the road surface and diffuse rapidly, thereby reducing the noise generated by the road surface during driving and reducing the sound source intensity. When the sound wave is incident on the porous noise reduction road surface, the acoustic impedance of the road surface structure is changed due to the presence of a large porosity.

[0022] According to the above working process, it can be known that the glass fiber grid 6 has excellent thermal insulation performance, which can effectively reduce road traffic noise and air pollutant emissions. In addition, it also has a good isolation effect, which can prevent external objects from entering the interior of the vehicle to cause safety problems. The use of asphalt pavement glass fiber grid 6 can effectively improve the appearance of the road. At the same time, these materials have the advantages of strong impact resistance and high wear resistance, so they are easy to repair or replace. By setting the porosity of the top surface layer 7, the voids are full-pass voids. The high-speed airflow squeezed in the first process of the pumping effect will not be released into the atmosphere, but will be pressed into the full-pass pores of the pavement and diffuse rapidly, thereby reducing the noise generated by the pavement during driving and reducing the sound source intensity. When the sound wave is incident on the porous noise reduction pavement, the acoustic impedance of the pavement structure is changed due to the presence of a large porosity.

[0023] Further Figure 1 As shown, it is worth specifying that the material of the base layer 1 is composed of crushed stone, sand, concrete and cement. The thickness of the base layer 1 is about 20-25cm. The thickness of the base layer 1 is greater than the thickness of the subbase layer 3. Through the setting of the base layer 1, its function is to bear the load stress of the top surface layer 7 and above, to ensure that the road surface does not crack due to the lower settlement, and at the same time evenly disperse the load, improve the bearing capacity and durability of the road surface, and at the same time, the base layer 1 is also responsible for dispersing the wheel load and transmitting it to the soil layer below, and at the same time it can stabilize the road surface shape and make the road surface more stable.

[0024] Further Figure 2 and Figure 3 As shown, it is worth mentioning that the thickness values ​​of the waterproof adhesion layer 4 and the glass fiber grille 6 are consistent, and the thickness value of the asphalt concrete layer 5 is greater than the total thickness value of the waterproof adhesion layer 4 and the glass fiber grille 6. The thickness setting of the waterproof adhesion layer 4 and the glass fiber grille 6 can mainly enhance the moisture-proof and waterproof effect of the road surface. It can effectively improve the crack resistance and bearing capacity of the road surface, and at the same time prevent the road surface structure from softening, swelling, cracking and other problems in a wet environment, thereby extending the service life of the road surface. The glass fiber grille 6 has high tensile strength and durability, and is often used to reinforce the soil and increase the bearing capacity of the soil, improve the stability of the soil, and has multiple performance properties. It can be used for structural reinforcement, protection and prolonging the service life, effectively improving the heat insulation, noise reduction and sound insulation materials of the road surface, and can effectively reduce the noise generated by vehicles when driving on the road surface.

[0025] Further Figure 2 and Figure 3As shown, it is worth specifically explaining that an SBS modified emulsified asphalt tack coat 8 is arranged between the glass fiber grid 6 and the top surface layer 7, the aggregate particle size in the asphalt concrete layer 5 is about 0.5 to 1 cm, and an tack coat oil 9 is arranged between the asphalt concrete layer 5 and the waterproof adhesion layer 4. The setting of the tack coat oil 9 can increase the pavement bonding strength, so that the tack coat oil 9 can increase the adhesion between the pavements and improve the pavement bonding strength, thereby making the pavement more firm and durable, and in combination with the setting in the SBS modified emulsified asphalt tack coat 8, the weather resistance and load resistance of the pavement can be greatly improved.

[0026] In summary: through the setting of the base layer 1, its role is to bear the load stress of the top layer 7 and above, to ensure that the road surface does not crack due to the lower settlement, and at the same time evenly disperse the load, improve the bearing capacity and durability of the road surface, at the same time, the base layer 1 is also responsible for dispersing the wheel load and transmitting it to the underlying soil layer, while also being able to stabilize the road surface shape and make the road surface more stable, and through the thickness setting of the waterproof adhesion layer 4 and the glass fiber grid 6, the main role is to enhance the moisture-proof and waterproof effect of the road surface, it can effectively improve the crack resistance and bearing capacity of the road surface, and at the same time prevent the road surface structure from softening, swelling, cracking and other problems in a wet environment, thereby extending the service life of the road surface, and through The glass fiber grid 6 has high tensile strength and durability, and is often used to reinforce soil and increase the bearing capacity of soil, improve the stability of soil, and has multiple functions and performances. It can be used for structural reinforcement, protection and prolonging service life, effectively improving the heat insulation, noise reduction and sound insulation materials of the road surface, and can effectively reduce the noise generated by vehicles when driving on the road surface. The setting of the tack coat oil 9 can increase the bonding strength of the road surface, so that the tack coat oil 9 can increase the adhesion between the road surfaces and improve the bonding strength of the road surface, thereby making the road surface more firm and durable, and in conjunction with the setting of the SBS modified emulsified asphalt tack coat 8, it can greatly improve the weather resistance and load resistance of the road surface.

Claims

1. A high-toughness, low-noise, ultra-thin asphalt wearing layer pavement structure, comprising a base layer (1), characterized in that: Also includes A metal woven mesh (2) is laid on the top surface of the base layer (1), a subbase layer (3) is arranged directly above the base layer (1), the top surface of the metal woven mesh (2) is in contact with the ground of the subbase layer (3), a waterproof adhesive layer (4) is arranged on the top surface of the subbase layer (3), an asphalt concrete layer (5) is laid directly above the waterproof adhesive layer (4), a glass fiber grille (6) is arranged on the top surface of the asphalt concrete layer (5), and a top surface layer (7) is arranged on the top surface of the glass fiber grille (6).

2. The high-toughness, low-noise, ultra-thin asphalt wearing layer pavement structure according to claim 1 is characterized by: The thickness of the glass fiber grid (6) is consistent with the thickness of the waterproof adhesive layer (4), and the thickness of the glass fiber grid (6) is approximately 0.3-1.2 mm.

3. The high-toughness, low-noise, ultra-thin asphalt wearing layer pavement structure according to claim 2 is characterized by: The thickness of the waterproof adhesion layer (4) and the glass fiber grid (6) are consistent, and the thickness of the asphalt concrete layer (5) is greater than the total thickness of the waterproof adhesion layer (4) and the glass fiber grid (6).

4. The high-toughness, low-noise, ultra-thin asphalt wearing layer pavement structure according to claim 3 is characterized by: An SBS modified emulsified asphalt adhesive layer (8) is provided between the glass fiber grid (6) and the top surface layer (7), the aggregate particle size in the asphalt concrete layer (5) is about 0.5 to 1 cm, and an adhesive layer oil (9) is provided between the asphalt concrete layer (5) and the waterproof adhesive layer (4).

Images