Luminous road construction with multiple functions

Abstract

The application relates to the road paving technical field and provides a night light road structure with a composite function, which comprises, from top to bottom, functional layer one, a bonding layer, functional layer two, a sealing layer, a water blocking layer, a crack prevention bonding layer and a base layer; the functional layer one is a night light open-graded drainage type asphalt wearing layer, the functional layer one comprises solid particles one, transparent binding material and night light material, the solid particles, the night light material and the transparent binding material are mixed to form mixture one, and the mixture one is spread to form the functional layer one with a porosity of 12-18%; the solid particles one are hard natural color broken stones; the bonding layer is hydrophobic high-viscosity SBS modified emulsified asphalt with water permeability, and the thickness is 0.5-1.2 mm; the functional layer two is an open-graded drainage type asphalt mixture layer, and the porosity of the functional layer two is 18-25%; and the porosity of the water blocking layer is 2-4%. The application has the advantages of night light, natural color and drainage road, and has good drainage performance and is not prone to blockage.

Description

Technical Field

[0001] This application relates to the field of road paving technology, and in particular to a luminous road structure with multiple functions. Background Technology

[0002] With the acceleration of global urbanization, urban roads, as a crucial component of urban infrastructure, face unprecedented challenges and opportunities in their construction and development. Traditional, single-function, standardized road designs are no longer sufficient to meet the complex and ever-changing needs of modern cities. Therefore, the diversified demands of urban road construction have emerged, aiming to build a safer, more efficient, greener, and more harmonious urban transportation environment through innovative design, multi-functional integration, and the application of intelligent technologies.

[0003] Drainage asphalt pavement features a skeletal porous structure where coarse aggregates are tightly interconnected, forming an interlocking skeleton with high porosity and depth. During rainfall, rainwater can be rapidly drained through these interconnected pores, reducing surface water accumulation. The high coarse aggregate content and macroscopic roughness effectively eliminate the water film formation common in traditional asphalt concrete pavements during rain, ensuring tire-to-road adhesion and significantly improving skid resistance. The rapid drainage of surface water also greatly reduces water mist and film formation, splashing, and glare, improving visibility, lowering the accident rate, and enhancing driving safety and comfort. However, this type of drainage asphalt pavement is typically single-layered. During paving and use, the porosity decreases due to traffic loads, dust accumulation, and changes in environmental conditions such as rainfall and vegetation, leading to porosity degradation, reduced drainage performance, and significantly diminished cooling and noise reduction capabilities.

[0004] Furthermore, with the development of my country's economic construction, a large number of functional pavement projects have emerged. As an important technology, luminous pavement has been rapidly researched and developed. Research and practice have shown that luminous pavement has significant advantages in terms of traffic indication, pedestrian flow guidance, and aesthetics, and has broad application prospects in the field of functional road paving.

[0005] However, current methods for creating luminous pavements mainly involve spreading or paving fluorescent stone layers or applying fluorescent coatings. Spreading or paving fluorescent stones has limitations in preventing scattering and results in poor water permeability and luminous performance. Using fluorescent coatings, on the other hand, can affect the original pavement structure, significantly reducing water permeability and making it prone to cracking. Utility Model Content

[0006] To address the aforementioned problems, this application provides a multi-functional luminous road structure that combines the advantages of luminescence, natural color, and drainage. Both functional layers one and two are drainage layers, with functional layer two having a higher porosity than functional layer one. This prevents drainage channels from becoming clogged, improving the permeability of the luminous road structure. Furthermore, the tack coat is a hydrophobic, high-viscosity SBS-modified emulsified asphalt with permeable properties. This not only improves the bond between functional layers one and two but also increases the rate of water penetration in the tack coat, allowing water droplets to quickly infiltrate and further ensuring the drainage performance of the double-layered drainage road. Additionally, the solid particles in functional layer one are natural colored crushed stone, making functional layer one a luminous natural-colored pavement. This pavement displays the natural color of the stone during the day and, by absorbing natural light, continues to glow for a period of time at night. The technical solution adopted in this application is as follows:

[0007] A multifunctional luminous road structure includes:

[0008] The functional layers are stacked sequentially from top to bottom: functional layer 1, adhesive layer, functional layer 2, sealing layer, watertight layer, crack-resistant adhesive layer, and base layer.

[0009] The first functional layer is a luminescent open-graded drainage asphalt wearing course, comprising solid particles, a transparent binder, and a luminescent material. The solid particles, the luminescent material, and the transparent binder are mixed to form a mixture, which is then spread to form a functional layer with a porosity of 12%–18%. The solid particles are hard, natural colored crushed stone. The tack coat is a permeable, hydrophobic, high-viscosity SBS-modified emulsified asphalt with a thickness of 0.5 mm–1.2 mm. The second functional layer is an open-graded drainage asphalt mixture layer with a porosity of 18%–25%. The watertight layer has a porosity of 2%–4%.

[0010] In some embodiments, the seal layer is one of a modified emulsified bitumen seal layer, a hot bitumen seal layer, or a slurry seal layer, with a thickness of 0.5 mm to 1.2 mm.

[0011] In some embodiments, the watertight layer is a dense-graded asphalt concrete mixture layer, and the asphalt in the watertight layer is high-modulus modified asphalt.

[0012] In some embodiments, the crack-resistant adhesive layer is formed from polyester fiberglass cloth impregnated with modified emulsified bitumen or hot bitumen.

[0013] In some embodiments, the base layer is a cement-stabilized crushed stone layer.

[0014] In some embodiments, the nominal maximum particle size of the first solid particle is 4.75 mm to 9.5 mm; the nominal maximum particle size of the mixture in the second functional layer is 9.5 mm to 13.2 mm; and the nominal maximum particle size of the mixture in the watertight layer is 19 mm to 26.5 mm.

[0015] In some embodiments, the thickness of the first functional layer is 15mm to 30mm; the thickness of the second functional layer is 30mm to 50mm; the thickness of the watertight layer is 50mm to 80mm; and the thickness of the base layer is 400mm to 600mm.

[0016] In some embodiments, the amount of modified emulsified asphalt or hot asphalt sprayed in the crack-resistant bonding layer is 1.2 kg / m³. 2 ~1.4kg / m 2 .

[0017] The luminous road structure with multiple functions provided in this application has the following beneficial effects:

[0018] 1. This application combines the advantages of luminous, natural-colored, and drainage road features. Both functional layers one and two are drainage layers, achieving high permeability for the entire luminous road structure. In addition to meeting the basic requirements for daily vehicle and pedestrian traffic, the overall luminous road structure features a surface layer (functional layer one) that combines the functions of a drainage pavement and a luminous natural-colored pavement. The middle layer (functional layer two) has the large-pore structure characteristic of a typical drainage pavement, allowing water to quickly collect and drain through storm and sewage pipes during heavy or moderate rain. The lower layer (watertight layer) has a watertight structure, effectively preventing rainwater infiltration into the base layer and subsequent water damage. The pores in functional layer one are smaller, while those in functional layer two are larger. Larger pollutants cannot pass through functional layer one into the pores of functional layer two and can be removed under routine maintenance. Some smaller pollutants can flow through the pores of functional layer one into the pores of functional layer two, resulting in excellent anti-scattering ability of this luminous road structure. Furthermore, under the action of rainwater, pollutants remaining in the pores of functional layer two will flow out smoothly with the rainwater. Due to the difference in pore size between functional layer one and functional layer two, the lower pores form a negative pressure under the action of rainwater flow, which has a cleaning effect on pollutants attached to the surface layer, thereby enabling this luminous road structure to maintain high water permeability for a long time. Even better, the clean road surface condition ensures that the luminous road structure of this invention has a long-lasting and durable luminous effect.

[0019] 2. The tack coat is a hydrophobic, high-viscosity SBS modified emulsified asphalt with permeability. While improving the adhesion between functional layer one and functional layer two, it also increases the penetration rate of water in the tack coat. Water droplets can quickly seep into the tack coat, which further ensures the drainage performance of the double-layer drainage road.

[0020] 3. The solid particles in functional layer one are natural colored crushed stone, making functional layer one a luminous natural-colored pavement. During the day, this pavement displays the natural color of the stone itself, and by absorbing natural light, it continues to glow for a period of time at night. Furthermore, functional layer one is a monolithic paving layer, solving the problems of existing luminous pavements and achieving high permeability, high resistance to scattering, excellent and long-lasting luminous effect, and resistance to cracking. Attached Figure Description

[0021] The preferred embodiments will be described below in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of a multi-functional luminous road structure:

[0022] Figure 1 This is a schematic diagram of the overall structure of the luminous road construction proposed in this application.

[0023] Explanation of icon numbers:

[0024] Functional layer 1, adhesive layer 2, functional layer 3, sealing layer 4, watertight layer 5, crack-resistant adhesive layer 6, base layer 7. Detailed Implementation

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0027] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] refer to Figure 1 This application provides a luminous road structure with composite functions, including a functional layer 1, an adhesive layer 2, a functional layer 3, a sealing layer 4, a watertight layer 5, a crack-resistant adhesive layer 6, and a base layer 7 stacked from top to bottom.

[0031] Functional layer 1 is a luminescent open-graded drainage asphalt wearing course, comprising solid particles 1, transparent binder, and luminescent material. The solid particles, luminescent material, and transparent binder are mixed to form mixture 1, which is then laid to form functional layer 1 with a porosity of 12%–18%. Solid particles 1 is hard, natural colored crushed stone. Tack coat 2 is a permeable, hydrophobic, high-viscosity SBS modified emulsified asphalt with a thickness of 0.5 mm–1.2 mm. Functional layer 3 is an open-graded drainage asphalt mixture layer with a porosity of 18%–25%. The watertight layer 5 has a porosity of 2%–4%.

[0032] Specifically, the transparent binder in this embodiment can be a transparent epoxy resin, and the high light transmittance of the transparent epoxy resin ensures the luminescence brightness of the present invention and guarantees the luminescence effect. Chinese Patent Application No. 201710961602 discloses a method for preparing a transparent binder, and this application can also use the transparent binder prepared by that patent. The hard natural colored gravel can be one or more of granite, basalt, diabase, etc., or other natural colored gravel with a certain degree of hardness.

[0033] It is worth noting that this application is a luminous double-layer drainage road, combining the advantages of luminescence, natural color, and drainage. Both functional layers one and two are drainage layers, achieving high permeability for the entire luminous road structure. In addition to meeting the basic requirements for daily vehicle and pedestrian traffic, the overall luminous road structure features a surface layer (functional layer one) that combines the functions of a drainage pavement and a luminous natural-colored pavement. The middle layer (functional layer two) has the large-pore structure characteristic of a typical drainage pavement, allowing water to quickly collect and drain through storm and sewage pipes during heavy or moderate rain. The lower layer (watertight layer) has a watertight structure, effectively preventing rainwater infiltration into the base layer and subsequent water damage. The pores in functional layer one are smaller, while those in functional layer two are larger. Larger pollutants cannot pass through functional layer one into the pores of functional layer two and can be removed under routine maintenance. Some smaller pollutants can flow through the pores of functional layer one into the pores of functional layer two, resulting in excellent anti-scattering ability of this luminous road structure. Furthermore, under the action of rainwater, pollutants remaining in the pores of functional layer two will flow out smoothly with the rainwater. Due to the difference in pore size between functional layer one and functional layer two, the lower pores form a negative pressure under the action of rainwater flow, which has a cleaning effect on pollutants attached to the surface layer, thereby enabling this luminous road structure to maintain high water permeability for a long time. Even better, the clean road surface condition ensures that the luminous road structure of this invention has a long-lasting and durable luminous effect.

[0034] Furthermore, the tack coat in this application is a hydrophobic, high-viscosity SBS modified emulsified asphalt with permeable properties. This not only improves the adhesion between functional layer one and functional layer two, but also provides good resistance to deformation and shear, significantly reducing pavement distress and extending pavement service life. In addition, it increases the penetration rate of water in the tack coat, allowing water droplets to quickly infiltrate, further ensuring the drainage performance of the double-layer drainage road. Specifically, the tack coat can be prepared according to the content disclosed in Chinese Patent Application No. 202210913291.

[0035] Furthermore, the solid particles in functional layer one are natural colored crushed stone, and the binder is transparent. This makes functional layer one a luminous natural-colored pavement. During the day, the luminous natural-colored pavement displays the natural color of the stone itself, decorating the road surface, beautifying the urban landscape, and enhancing its aesthetic appeal and overall beauty. The pavement absorbs natural light and provides luminescence at night. In addition, functional layer one is a monolithic paving, solving the problems of existing luminous pavements and achieving high permeability, high resistance to scattering, excellent and long-lasting luminous effect, and resistance to cracking.

[0036] In one embodiment, the seal layer is one of a modified emulsified bitumen seal layer, a hot bitumen seal layer, or a slurry seal layer, with a thickness of 0.5 mm to 1.2 mm. In other embodiments, the seal layer can be a modified emulsified bitumen chip seal layer, a hot bitumen chip seal layer, or a micro-surfacing layer.

[0037] In one embodiment, the watertight layer is a dense-graded asphalt concrete mixture layer, and the asphalt in the watertight layer is high-modulus modified asphalt. Specifically, the watertight layer can be a dense asphalt concrete mixture or a dense asphalt-stabilized crushed stone mixture. This application prefers a dense asphalt concrete mixture.

[0038] In one embodiment, the crack-resistant bonding layer is formed of polyester fiberglass cloth impregnated with modified emulsified asphalt or hot asphalt. Specifically, the amount of modified emulsified asphalt or hot asphalt applied to the crack-resistant bonding layer is 1.2 kg / m³. 2 ~1.4kg / m 2 This crack-resistant bonding layer solves the bonding and waterproofing problems between pavement layers. Simultaneously, due to the very low elongation and high instantaneous tensile strength of the polyester fiberglass cloth, it effectively eliminates stress concentration at pavement joints or cracks, reduces crack propagation and upward reflection within the pavement, thereby delaying the formation of reflective cracks, extending road service life, and significantly reducing road repair and maintenance costs. Polyester fiberglass cloth is woven from polyester and glass fibers, possessing both high strength and flexibility. Its instantaneous tensile strength is higher than ordinary materials, but its elongation is extremely low. This characteristic makes it less prone to deformation under load, effectively locking crack propagation and extending road service life.

[0039] In one embodiment, the base layer is a cement-stabilized crushed stone layer.

[0040] In one embodiment, the nominal maximum particle size of the first solid particle is 4.75 mm to 9.5 mm; the nominal maximum particle size of the mixture in the second functional layer is 9.5 mm to 13.2 mm; and the nominal maximum particle size of the mixture in the watertight layer is 19 mm to 26.5 mm.

[0041] In one embodiment, the thickness of functional layer one is 15mm to 30mm; the thickness of functional layer two is 30mm to 50mm; the thickness of the watertight layer is 50mm to 80mm; and the thickness of the base layer is 400mm to 600mm.

[0042] In this application, the dynamic stability of functional layer one at 60℃ is greater than 5000 times / mm, and the scattering loss rate is less than 15%, which effectively improves the anti-skid performance of the road surface, greatly enhances the safety in rainy weather, and reduces the accident rate. At the same time, the road surface structure displays the natural color of the stone during the day and emits light for more than 4 hours at night, providing certain safety assistance for pedestrians on the road at night.

[0043] In this application, the larger porosity of the second functional layer ensures that rainwater can quickly collect in this layer during heavy and moderate rain and eventually be discharged through the rainwater and sewage pipes, with a scattering loss rate of less than 15% and a viscosity of more than 50,000 Pa·s at 60°C, thus ensuring the durability, anti-aging and water damage resistance of the asphalt mixture.

[0044] In this application, the low porosity of the watertight layer makes the structure watertight, effectively ensuring that rainwater is collected and discharged from the functional layer 2. The dynamic stability at 60℃ is above 8000 times / mm, which gives the mixture good rutting resistance and makes the entire road structure have strong load-bearing capacity.

[0045] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A luminous road structure with multiple functions, characterized in that, include: The functional layers are stacked sequentially from top to bottom: functional layer 1, adhesive layer, functional layer 2, sealing layer, watertight layer, crack-resistant adhesive layer, and base layer. The first functional layer is a luminescent open-graded drainage asphalt wearing course, comprising solid particles, a transparent binder, and a luminescent material. The solid particles, the luminescent material, and the transparent binder are mixed to form a mixture, which is then spread to form a functional layer with a porosity of 12%–18%. The solid particles are hard, natural colored crushed stone. The tack coat is a permeable, hydrophobic, high-viscosity SBS-modified emulsified asphalt with a thickness of 0.5 mm–1.2 mm. The second functional layer is an open-graded drainage asphalt mixture layer with a porosity of 18%–25%. The watertight layer has a porosity of 2%–4%.

2. The luminous road structure with composite functions according to claim 1, characterized in that, The seal layer is one of modified emulsified bitumen seal layer, hot bitumen seal layer, or slurry seal layer, with a thickness of 0.5 mm to 1.2 mm.

3. A luminous road structure with composite functions according to claim 2, characterized in that, The watertight layer is a dense-graded asphalt concrete mixture layer, and the asphalt in the watertight layer is high-modulus modified asphalt.

4. A luminous road structure with composite functions according to claim 3, characterized in that, The crack-resistant adhesive layer is formed from polyester fiberglass cloth impregnated with modified emulsified asphalt or hot asphalt.

5. A luminous road structure with composite functions according to claim 4, characterized in that, The base layer is a cement-stabilized crushed stone layer.

6. A luminous road structure with composite functions according to claim 5, characterized in that, The nominal maximum particle size of the first solid particle is 4.75 mm to 9.5 mm; the nominal maximum particle size of the mixture in the second functional layer is 9.5 mm to 13.2 mm; and the nominal maximum particle size of the mixture in the watertight layer is 19 mm to 26.5 mm.

7. A luminous road structure with composite functions according to claim 6, characterized in that, The thickness of the first functional layer is 15mm to 30mm; the thickness of the second functional layer is 30mm to 50mm; the thickness of the watertight layer is 50mm to 80mm; and the thickness of the base layer is 400mm to 600mm.

8. A luminous road structure with composite functions according to claim 7, characterized in that, The modified emulsified asphalt or hot asphalt in the crack-resistant bonding layer is applied at a rate of 1.2 kg / m³. 2 ~1.4kg / m 2 .

Images