Novel high-strength stress absorption patch

Abstract

The utility model discloses a novel high-strength stress absorbing paste, which relates to the technical field of road construction, and comprises a wearing layer, a water-resisting layer, a stress absorbing layer, an impermeable layer, an auxiliary sticking layer and an isolating membrane which are sequentially arranged from top to bottom, the wearing layer comprises a reinforcing layer and a lower wearing layer which are fixedly connected, and the bottom surface of the lower wearing layer is provided with a limiting slot. Limiting protrusions are arranged on the surface of the stress absorption layer. The reinforcing layer is matched with the lower wearing layer, so that the overall strength and durability of the stress absorption patch are effectively enhanced, the friction force between the stress absorption patch and a pavement base layer can be effectively improved in the use process, and the stress absorption patch is prevented from sliding or shifting; meanwhile, the filling density of the basalt particles in the reinforcing layer is larger than that of the basalt particles in the lower wearing layer, the wear resistance of the whole wearing layer in actual use is further improved, the service life of the whole wearing layer in actual use is further prolonged, and the effect of limiting and fixing the limiting protrusions is achieved through the limiting grooves.

Description

Technical Field

[0001] This utility model relates to the field of road construction, and in particular to a novel high-strength stress-absorbing patch. Background Technology

[0002] Cement concrete pavement, also known as white pavement, was once a common pavement structure for urban roads due to its high strength, long lifespan, simple construction, and low cost. However, with urban development and a surge in traffic volume, the drawbacks of cement concrete pavement, such as high noise levels, bumpy surfaces, poor driving comfort, and long maintenance periods, have become increasingly prominent. Therefore, in recent years, many cities have adopted the method of overlaying asphalt concrete pavement (commonly known as "white-to-black pavement") to renovate it. This avoids the waste of resources caused by digging up the old pavement and greatly improves the performance of the road surface, such as skid resistance, noise reduction, durability, and driving comfort. Currently, in the "white-to-black" renovation, most projects directly lay asphalt concrete pavement on top of the old cement concrete pavement. The process is simple, but the following two problems have gradually emerged during use:

[0003] First, the cracks and joints in the old cement concrete pavement were not specially treated, making the asphalt concrete overlay prone to reflective cracking. Second, cement concrete is a rigid base layer and does not have good load-bearing, stress-absorbing, and deformation-diffusion capabilities, making the asphalt concrete overlay prone to rutting. To prevent structural reflective cracks in asphalt road projects and thermal shrinkage cracks and load-bearing shear cracks between cement slabs in white-to-black road reconstruction projects from being reflected to the surface layer, a high-performance stress-absorbing layer is laid between the cement slabs, water-stabilized layer, or asphalt structural layer. This comprehensively prevents reflective cracks, base water damage, and other defects, while also serving as an overall sealing and waterproofing layer and an adhesive layer.

[0004] The existing high-strength stress-absorbing tape consists of an adhesive layer, modified asphalt material, and inorganic material laid on its surface. The layer structure is relatively simple and only has conventional stress absorption and dispersion functions. Its isolation, energy dissipation, buffering, and water-proofing effects need to be further improved.

[0005] Therefore, this utility model proposes a novel high-strength stress-absorbing patch. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a novel high-strength stress-absorbing patch that solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel high-strength stress-absorbing patch, comprising, from top to bottom, a wear layer, a water-proof layer, a stress-absorbing layer, a seepage-proof layer, an auxiliary adhesive layer, and a release membrane. The wear layer includes a reinforcing layer and a lower wear layer that are fixedly connected. A limiting groove is provided on the bottom surface of the lower wear layer, and a limiting protrusion is provided on the surface of the stress-absorbing layer.

[0008] As a further technical solution of this utility model, both the reinforcing layer and the lower wear layer are set as basalt particle layers, and the filling density of basalt particles in the reinforcing layer is greater than that in the lower wear layer.

[0009] As a further technical solution of this utility model, multiple sets of rectangular grooves are equally spaced on the bottom surface of the wear layer along the limiting groove.

[0010] As a further technical solution of this utility model, the waterproof layer is set as a rubber cement coating layer, and a rectangular opening is provided on its surface corresponding to the limiting protrusion.

[0011] As a further technical solution of this utility model, the stress-absorbing layer is set as a modified asphalt macadam layer, the limiting protrusion is a rectangular protrusion and is integrally set with the stress-absorbing layer, and multiple sets are equidistantly arranged along the surface of the stress-absorbing layer.

[0012] As a further technical solution of this utility model, the seepage-proof layer is set as a chloroprene rubber layer.

[0013] As a further technical solution of this utility model, the auxiliary adhesive layer is set as a tackifying petroleum resin layer.

[0014] This utility model provides a novel high-strength stress-absorbing patch, which has the following advantages compared with the prior art:

[0015] 1. This design presents a novel high-strength stress-absorbing patch. By combining a reinforcing layer with a lower wear layer, the overall strength and durability of the stress-absorbing patch are effectively enhanced. During use, it can effectively increase the friction between the stress-absorbing patch and the road base layer, preventing slippage or displacement. At the same time, the basalt particle filling density in the reinforcing layer is greater than that in the lower wear layer, further enhancing the wear resistance and service life of the wear layer in actual use. The limiting groove achieves the effect of limiting and fixing the limiting protrusion.

[0016] 2. This design is a novel high-strength stress-absorbing patch that achieves the effect of preventing water seepage between the wear layer and the stress-absorbing layer through a water-proof layer.

[0017] 3. This design presents a novel high-strength stress-absorbing patch. The stress-absorbing layer enhances the overall stability and durability of the patch, while also exhibiting good elasticity and crack resistance during practical use. This further reduces the generation and propagation of external pavement cracks. Furthermore, the stress-absorbing layer, designed as a modified asphalt macadam layer, ensures the bonding stability between the waterproof layers. Limiting protrusions ensure the connection stability between the stress-absorbing layer and the wear layer. Simultaneously, the stress-absorbing patch as a whole can withstand a certain amount of tensile stress from external pavement cracks, alleviating stress intensity at crack locations and improving the tensile strength of the pavement structural layers.

[0018] 4. This design features a novel high-strength stress-absorbing tape. The impermeable layer at the bottom layer prevents water from seeping into the subgrade, thus protecting the strength of the base layer and preventing pavement damage caused by water erosion. Simultaneously, the neoprene rubber impermeable layer isolates the pavement base layer from the upper wear layer, reducing the tendency for pavement cracks to reflect through the surface layer. An auxiliary adhesive layer enhances the adhesiveness and self-adhesion of the stress-absorbing tape, facilitating installation and construction. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a novel high-strength stress-absorbing patch;

[0020] Figure 2 This is a new type of high-strength stress-absorbing patch. Figure 1 Enlarged view of the structure at point A in the middle;

[0021] Figure 3 This is a new type of high-strength stress-absorbing patch. Figure 1 Enlarged view of the structure at point B in the middle.

[0022] In the diagram: 1. Wear layer; 2. Waterproof layer; 3. Stress-absorbing layer; 4. Anti-seepage layer; 5. Auxiliary adhesive layer; 6. Lower wear layer; 7. Reinforcing layer; 8. Limiting groove; 9. Limiting protrusion; 10. Separating membrane. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3This utility model provides a novel high-strength stress-absorbing patch technical solution: it includes a wear layer 1, a water-proof layer 2, a stress-absorbing layer 3, an anti-seepage layer 4, an auxiliary adhesive layer 5, and a release membrane 10 arranged sequentially from top to bottom. The wear layer 1 includes a reinforcing layer 7 and a lower wear layer 6 that are fixedly connected. A limiting groove 8 is provided on the bottom surface of the lower wear layer 6, and a limiting protrusion 9 is provided on the surface of the stress-absorbing layer 3.

[0025] like Figure 1-2 As shown, both the reinforcing layer 7 and the lower wear layer 6 are basalt particle layers, and the basalt particle filling density in the reinforcing layer 7 is greater than that in the lower wear layer 6. Multiple sets of equidistant rectangular grooves 8 are formed along the bottom surface of the lower wear layer 6. The combination of the reinforcing layer 7 and the lower wear layer 6 effectively enhances the overall strength and durability of the stress-absorbing patch. During use, it effectively increases the friction between the stress-absorbing patch and the road base layer, preventing slippage or displacement. Furthermore, the greater basalt particle filling density in the reinforcing layer 7 compared to the lower wear layer 6 further enhances the wear resistance and service life of the wear layer 1 in actual use. The locating grooves 8 also achieve the effect of locating and fixing the locating protrusions 9.

[0026] The waterproof layer 2 is a rubber cement coating layer, and its surface has rectangular openings corresponding to the limiting protrusions 9. The waterproof layer 2 achieves the effect of preventing water seepage between the wear layer 1 and the stress absorption layer 3.

[0027] The stress-absorbing layer 3 is a modified asphalt macadam layer. The limiting protrusions 9 are rectangular protrusions and are integrally set with the stress-absorbing layer 3. At the same time, multiple sets are set at equal intervals along the surface of the stress-absorbing layer 3. The stress-absorbing layer 3 improves the stability and durability of the entire stress-absorbing patch. In actual use, it has good elasticity and crack resistance, which can further reduce the generation and expansion of external pavement cracks. The stress-absorbing layer 3, which is a modified asphalt macadam layer, can ensure the bonding stability between the waterproof layer 2. The limiting protrusions 9 can ensure the connection stability between the stress-absorbing layer 3 and the wear layer 1. At the same time, the stress-absorbing patch as a whole can withstand a certain amount of tensile stress from external pavement cracks, relieve the stress intensity at the cracks, and improve the tensile strength of the pavement structural layer.

[0028] like Figure 3As shown, the impermeable layer 4 is a neoprene rubber layer, and the auxiliary adhesive layer 5 is a tackifying petroleum resin layer. The impermeable layer 4, located at the bottom layer, prevents water from seeping into the subgrade, thereby protecting the strength of the base layer and preventing road damage caused by water erosion. At the same time, the neoprene rubber impermeable layer 4 can isolate the road base layer from the upper wear layer 1, thereby reducing the tendency of road cracks to reflect through the surface layer. The auxiliary adhesive layer 5 improves the adhesion and self-adhesion of the stress-absorbing tape, thereby facilitating installation and construction.

[0029] The working principle of this utility model is as follows: In the actual laying and use process, this device ensures the absorption and dispersion of basic stress, while having good isolation, energy dissipation and buffering and water-proof and seepage-proof effects. When using it, tear off the bottom isolation film 10 and attach the stress-absorbing tape directly to the road surface. After the stress-absorbing tape is laid, use an external rubber wheel machine or pressure roller to flatten the stress-absorbing tape.

[0030] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A novel high-strength stress-absorbing patch, characterized in that: It includes, from top to bottom, a wear layer (1), a waterproof layer (2), a stress-absorbing layer (3), a seepage-proof layer (4), an auxiliary adhesive layer (5), and a release membrane (10); The wear layer (1) includes a reinforcing layer (7) and a lower wear layer (6) that are fixedly connected. The bottom surface of the lower wear layer (6) has a limiting groove (8), and the surface of the stress absorbing layer (3) is provided with a limiting protrusion (9).

2. The novel high-strength stress-absorbing patch according to claim 1, characterized in that: Both the reinforcing layer (7) and the lower wear layer (6) are set as basalt particle layers, and the basalt particle filling density in the reinforcing layer (7) is greater than that in the lower wear layer (6).

3. The novel high-strength stress-absorbing patch according to claim 1, characterized in that: The limiting slot (8) is formed in multiple rectangular equidistant groups along the bottom surface of the lower wear layer (6).

4. The novel high-strength stress-absorbing patch according to claim 1, characterized in that: The waterproof layer (2) is configured as a rubber cement coating layer, and its surface has a rectangular opening corresponding to the limiting protrusion (9).

5. A novel high-strength stress-absorbing patch according to claim 1, characterized in that: The stress-absorbing layer (3) is a modified asphalt macadam layer, and the limiting protrusion (9) is a rectangular protrusion, which is integrally set with the stress-absorbing layer (3). At the same time, multiple sets are set at equal intervals along the surface of the stress-absorbing layer (3).

6. The novel high-strength stress-absorbing patch according to claim 1, characterized in that: The impermeable layer (4) is a chloroprene rubber layer.

7. A novel high-strength stress-absorbing patch according to claim 1, characterized in that: The auxiliary adhesive layer (5) is configured as a tackifying petroleum resin layer.

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