Capsule type monomer for repairing asphalt pavement and capsule type self-cutting diaphragm thereof

Abstract

The utility model relates to a capsule type monomer for repairing an asphalt pavement and a capsule type self-cutting diaphragm thereof. At present, cracks are different in form after the asphalt pavement is damaged, secondary cracking caused by large temperature difference and non-uniform water content exists after filling, and a standard treatment mode for correspondingly filling according to the crack trend does not exist. A supporting frame is arranged on a bottom piece, a containing cavity is formed between the inner wall of the supporting frame and the top face of the bottom piece, a plurality of long holes are machined in the supporting frame, each long hole is communicated with the containing cavity, a center containing bag is arranged in the containing cavity, and a gap is formed between the outer bag wall of the center containing bag and the inner wall of the supporting frame. The central containing capsule is filled with a capsule type asphalt mixture; the capsule type self-cutting diaphragm for repairing the asphalt pavement comprises a plurality of capsule type single bodies, two containing cavities of every two adjacent capsule type single bodies are communicated, and at least one cutting fracture dent is machined in a bottom piece of each capsule type single body.

Description

Technical Field

[0001] This utility model specifically relates to a capsule-type monomer for asphalt pavement repair and its capsule-type self-cutting membrane. Background Technology

[0002] Asphalt pavement repair is a complex and crucial task, involving the repair and reconstruction of damaged areas to ensure road safety and stability. During winter service, asphalt pavements are inevitably affected by low temperatures, leading to conditions such as low-temperature cracking. While asphalt, as a viscoelastic material, possesses a certain degree of self-healing ability, the process is complex and slow, and asphalt pavements do not have sufficient time to heal during normal service. Therefore, improving the self-healing ability of asphalt and shortening its self-healing time plays a vital role in enhancing the durability of asphalt pavements. Among these methods, self-healing microcapsule technology, with its durability and long-lasting effects, is considered one of the effective ways to improve the self-healing ability of asphalt materials.

[0003] In the current process of repairing asphalt pavements after rutting, deformation, and freezing cracks under high and low temperature conditions, the top structure of the asphalt pavement is one of the important areas to be reinforced and repaired. However, due to the different forms of cracks after asphalt pavement damage, the stability of the repaired asphalt pavement is not guaranteed due to uneven moisture content caused by large temperature differences after filling. Secondary cracking may also occur due to high and low temperature conditions or external impacts. Local repair methods are not standardized, repair costs are high, and there is no unified standard treatment method that can fill according to the specific direction of the crack. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a capsule-type monomer for asphalt pavement repair and its capsule-type self-cutting diaphragm are provided to solve the above problems.

[0005] A capsule-shaped unit for asphalt pavement repair includes a substrate, a support frame, and a central bladder. The substrate is horizontally positioned, and the support frame is positioned on the substrate. A cavity is formed between the inner wall of the support frame and the top surface of the substrate. The support frame is a polygonal frame with multiple elongated holes machined along its length. Each elongated hole is connected to the cavity. The central bladder is positioned inside the cavity, and its bottom is connected to the top surface of the substrate. A gap is formed between the outer wall of the central bladder and the inner wall of the support frame. The central bladder is filled with a capsule-shaped asphalt mixture.

[0006] As a preferred option: the support frame is hexagonal in shape, the shape of the substrate is matched with the shape of the support frame, and the thickness of the support frame is less than or equal to 5mm.

[0007] As a preferred option, the central sac is a hemispherical sac.

[0008] As a preferred option, the film is a flexible film.

[0009] As a preferred embodiment: the capsule-type asphalt mixture includes an asphalt binder and several double-layer composite capsules. The several double-layer composite capsules are located in the asphalt binder. Each double-layer composite capsule includes an outer shell, an inner shell, an outer core, and an inner core. Both the outer shell and the inner shell are capsule-shaped shells. The outer shell and the inner shell are coaxially arranged from the outside to the inside. The outer core is disposed between the inner wall of the outer shell and the outer wall of the inner shell. The inner core is disposed inside the inner shell. The inner core is a core made of energy storage phase change material.

[0010] A capsule-type self-cutting diaphragm for asphalt pavement repair utilizes the aforementioned capsule-type unit for asphalt pavement repair, comprising multiple capsule-type units. Each capsule-type unit includes a base plate, a support frame, and a central bladder. The base plate is horizontally positioned, and the support frame is positioned on the base plate. A receiving cavity is formed between the inner wall of the support frame and the top surface of the base plate. The support frame is a polygonal frame with multiple elongated holes machined along its length, each elongated hole communicating with the receiving cavity. The central bladder is positioned within the receiving cavity, with its bottom connected to the top surface of the base plate. A gap is formed between the outer wall of the central bladder and the inner wall of the support frame. The central bladder is filled with a capsule-type asphalt mixture. The two receiving cavities of two adjacent capsule-type units are connected. At least one cutting and fracture indentation is machined on the base plate of each capsule-type unit.

[0011] As a preferred option: each central capsule is a hemispherical capsule, and when two cutting and breaking indentations are machined on the substrate of each capsule-type unit, the two cutting and breaking indentations are located on the same radial line of the central capsule.

[0012] As a preferred embodiment: each support frame is hexagonal in shape, each support frame includes six support plates, the first and last ends of the six support plates are connected in sequence to form a hexagonal frame, each bottom piece is connected to the bottom side of each support plate in its corresponding support frame, each support plate is machined with an elongated hole along its thickness direction, the length direction of each elongated hole is in the same direction as the length direction of the support plate, each elongated hole is located near the top side of the support plate, each support plate in a capsule-shaped unit is attached to one support plate in another adjacent capsule-shaped unit, and the receiving cavity in a capsule-shaped unit is connected to the receiving cavity of the adjacent capsule-shaped unit through the elongated hole.

[0013] As a preferred option, the thickness of the film is less than the thickness of the support frame, and the thickness of the support frame is less than or equal to 5mm.

[0014] As a preferred embodiment: the cutting fracture groove includes multiple elongated holes, and the top surface of the substrate is machined with elongated holes along its thickness direction. The multiple elongated holes are spaced apart. When the multiple elongated holes are connected after being sheared or torn by external force, the central bladder is in the state of releasing capsule-type asphalt mixture.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The capsule-shaped unit in this utility model can be laid and filled according to the local conditions of the asphalt pavement to complete the point repair process. The base plate and the support frame cooperate with each other to provide bottom and circumferential support for the central capsule, which is suitable for the laying of the central capsule and the release process of the capsule-shaped asphalt mixture. It provides a supporting paving structure for the release of the capsule-shaped asphalt mixture, which helps to improve the repair effect of uniform paving after the central capsule ruptures and releases the capsule-shaped asphalt mixture. It is more suitable for completing the point repair process on the asphalt pavement and facilitates the standardized treatment of point repair.

[0017] 2. The capsule-type self-cutting membrane in this utility model can achieve a large-area surface repair process by combining multiple capsule-type units. It uses capsule-type asphalt mixture to perform quantitative repair on local sheet-like areas of asphalt pavement. It can be cut to form sheet-like structures with corresponding areas according to the width of the cracks in the specific asphalt pavement to be repaired. It can be used as a single piece or multiple pieces stacked and laid. The repair process has the repair effect of capsule-type units, while being more suitable for completing the sheet-like area repair process on asphalt pavement, which is conducive to the standardized treatment of sheet-like area repair.

[0018] 3. In this utility model, both the capsule-type monomer and the capsule-type self-cutting membrane are used in the repair process of the top structure of asphalt pavement. Attached Figure Description

[0019] Figure 1 A top view schematic diagram of a capsule-shaped unit used for asphalt pavement repair;

[0020] Figure 2 A side view schematic diagram of a capsule-shaped unit used for asphalt pavement repair;

[0021] Figure 3 A top view of the structure of multiple capsule-shaped monomers;

[0022] Figure 4 A top view schematic diagram showing the connection relationship between the negative, support frame, central storage compartment, and cutting break indentation;

[0023] Figure 5 A top view schematic diagram showing the connection relationship between the film, support frame, central bladder, and capsule-shaped asphalt mixture;

[0024] Figure 6 A side view structural diagram showing the connection relationship between the film, support frame, central bladder, capsule-type asphalt mixture and asphalt pavement in use;

[0025] Figure 7 A schematic diagram of the three-dimensional structure of a double-layered composite capsule;

[0026] Figure 8 This is a schematic diagram of the cross-sectional structure of the double-layered composite capsule along its radial direction.

[0027] In the diagram: 1-backing film; 2-support frame; 2-1-support plate; 3-central capsule; 4-receiving cavity; 5-elongated hole; 6-capsule-type asphalt mixture; 6-1-double-layer composite capsule body; 6-1-1-outer capsule shell; 6-1-2-inner capsule shell; 6-1-3-outer capsule core; 6-1-4-inner capsule core; 10-capsule-type unit; 11-cutting fracture indentation; 12-asphalt pavement. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0029] Specific implementation method one: Combining Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 This embodiment describes a capsule-type monomer 10 comprising a substrate 1, a support frame 2, and a central bladder 3. The substrate 1 is horizontally positioned, and the support frame 2 is positioned on the substrate 1. A receiving cavity 4 is formed between the inner wall of the support frame 2 and the top surface of the substrate 1. The support frame 2 is a polygonal frame with multiple elongated holes 5 machined along its length. Each elongated hole 5 is connected to the receiving cavity 4, forming a connected structural system. The central bladder 3 is positioned within the receiving cavity 4, with its bottom connected to the top surface of the substrate 1. The outer wall of the central bladder 3 is spaced from the inner wall of the support frame 2. The central bladder 3 is filled with a capsule-type asphalt mixture 6. After the capsule-type asphalt mixture 6 is released, it flows out uniformly through the positional alignment and communication between the elongated holes 5 and the receiving cavity 4, thus improving the quality of uniform and consistent repair.

[0030] The method by which the central capsule 3 releases the capsule-shaped asphalt mixture 6 in this embodiment is specifically selected according to the specific design and construction requirements. The main method is as follows:

[0031] Method 1: Each capsule-type monomer 10 has at least one cutting and breaking notch 11 processed on its base plate 1. The cutting and breaking notch 11 is used to provide a location by cutting or tearing the base plate 1. When the base plate 1 is cut or torn by the cutting and breaking notch 11, the cutting and breaking notch 11 is cut or torn, which directly causes the central capsule 3 to break, thereby achieving the purpose of releasing the capsule-type asphalt mixture 6.

[0032] Method 2: The central capsule 3 can also be heated and melted to release the capsule-shaped asphalt mixture 6.

[0033] Method 3: The central capsule 3 is preheated and then cut or torn open through the cutting fracture indentation 11 to complete the process of releasing the capsule-shaped asphalt mixture 6.

[0034] In this embodiment, the capsule-shaped asphalt mixture 6 inside the central bladder 3 can repair cracks, depressions, or other forms of damage to the asphalt pavement 12. When the central bladder 3 ruptures, part of the capsule-shaped asphalt mixture 6 released from the central bladder 3 is inside the support frame 2, and part flows through the elongated hole 5 outside the capsule-shaped individual 10 and out of the crack. This helps to improve the uniform repair of cracks, depressions, or other forms of damage to the asphalt pavement by the capsule-shaped asphalt mixture 6. The repair effect is continuous and durable, and it can achieve standardized repair at a low cost in a localized area, which helps to improve the continuous and durable service life of the asphalt pavement 12.

[0035] In this embodiment, the capsule-type asphalt mixture 6 includes an asphalt binder and several double-layer composite capsules 6-1. The several double-layer composite capsules 6-1 are located in the asphalt binder. Each double-layer composite capsule 6-1 includes an outer shell 6-1-1, an inner shell 6-1-2, an outer core 6-1-3, and an inner core 6-1-4. The outer shell 6-1-1 and the inner shell 6-1-2 are both capsule-shaped shells. The outer shell 6-1-1 and the inner shell 6-1-2 are coaxially arranged from the outside to the inside. The outer core 6-1-3 is disposed between the inner wall of the outer shell 6-1-1 and the outer wall of the inner shell 6-1-2. The inner core 6-1-4 is disposed inside the inner shell 6-1-2. The inner core 6-1-4 is made of energy storage phase change material. The double-layer composite capsule 6-1 has a reasonable and simple structure. The phase change material used in the inner core 6-1-4 is an existing phase change material. Through the structural combination of the double-layer composite capsule 6-1, road defects such as rutting, deformation, and freezing cracks under high and low temperature conditions can be effectively improved, achieving a durable repair method and avoiding secondary cracking.

[0036] In this embodiment, the substrate 1, the support frame 2, and the central storage 3 are all made of biodegradable materials. The support frame 2 is made of existing rigid biodegradable materials, while the substrate 1 and the central storage 3 are made of existing flexible biodegradable materials, specifically polylactic acid, polybutylene adipate terephthalate, polybutylene succinate, or other related materials, which are low in cost and easy to popularize and promote.

[0037] Furthermore, the substrate 1 and the central capsule 3 can also be made of biodegradable mulch film material, and the capsule-type asphalt mixture 6 is filled between the substrate 1 and the central capsule 3 by filling and pressing.

[0038] Specific Implementation Method Two: This implementation method is a further limitation of Specific Implementation Method One. The support frame 2 is hexagonal in shape, and the shape of the base plate 1 is matched with the shape of the support frame 2. The thickness of the support frame 2 is less than or equal to 5mm. The support frame 2 is small in size, which is convenient for filling or laying in cracks or depressions of different structural forms and sizes in the asphalt pavement 12.

[0039] The capsule-type unit 10 in this utility model can also be made into different specifications. The connection method and relative size ratio of the base plate 1, support frame 2 and central bladder 3 are the same in different specifications, thereby ensuring that the base plate 1 and support frame 2 cooperate with each other to provide a release paving structure with a corresponding area for the central bladder 3 with different volumes.

[0040] Specific Implementation Method 3: This implementation method is a further limitation of Specific Implementation Method 1 or 2, wherein the central sac 3 is a hemispherical sac. The shape of the hemispherical sac helps to improve the stability of the contact between the central sac 3 and the film 1, and avoids the central sac 3 shifting before release, which would affect the repair effect.

[0041] Specific Implementation Method Four: This implementation method further defines Specific Implementation Methods One, Two, or Three. The substrate 1 is a flexible sheet. The substrate 1 can be made of biodegradable plastic or other flexible materials used in road paving. This improves the adaptability and bonding performance during the paving process for cracks of different shapes or depths. In addition, the flexible sheet, while conforming to cracks or depressions in the asphalt pavement 12, also allows for easy cutting due to its flexibility.

[0042] Specific Implementation Method Five: Combining Figures 1 to 8This embodiment describes a capsule-type self-cutting membrane comprising multiple capsule-type units 10. Each capsule-type unit 10 includes a base plate 1, a support frame 2, and a central bladder 3. The base plate 1 is horizontally positioned, and the support frame 2 is positioned on the base plate 1. A receiving cavity 4 is formed between the inner wall of the support frame 2 and the top surface of the base plate 1. The support frame 2 is a polygonal frame, and multiple elongated holes 5 are machined along its length. Each elongated hole 5 is connected to the receiving cavity 4. The central bladder 3 is positioned inside the receiving cavity 4, and the bottom of the central bladder 3 is connected to the top surface of the base plate 1. The outer wall of the central bladder 3 is spaced from the inner wall of the support frame 2. The central bladder 3 is filled with a capsule-type asphalt mixture 6. The two receiving cavities 4 of two adjacent capsule-type units 10 are connected. At least one cutting and breaking indentation 11 is machined on the base plate 1 of each capsule-type unit 10.

[0043] Each capsule-shaped unit 10 in this embodiment includes a substrate 1, a support frame 2, and a central bladder 3. The substrate 1 is horizontally positioned, and the support frame 2 is positioned on the substrate 1. A receiving cavity 4 is formed between the inner wall of the support frame 2 and the top surface of the substrate 1. The support frame 2 is a polygonal frame, and multiple elongated holes 5 are machined along its length. Each elongated hole 5 is connected to the receiving cavity 4. The elongated holes 5 are configured to connect with the receiving cavity 4 to form a connected structural system. The central bladder 3 is positioned inside the receiving cavity 4. The bottom of the central bladder 3 is connected to the top surface of the substrate 1. The outer wall of the central bladder 3 is spaced from the inner wall of the support frame 2. The central bladder 3 is filled with a capsule-shaped asphalt mixture 6. After the capsule-shaped asphalt mixture 6 is released, it flows out uniformly through the positional fit and communication between the elongated holes 5 and the receiving cavity 4, which helps to improve the uniformity of the repair quality.

[0044] In this embodiment, during the actual manufacturing of the capsule-type self-cutting membrane, multiple membranes including the support frame 2 and the central sac 3 can share a single sheet structure as the main substrate. The main substrate is regarded as a whole composed of multiple substrates 1, which saves processing steps.

[0045] Furthermore, the capsule-shaped asphalt mixture 6 within the central bladder 3 can repair cracks, depressions, or other forms of asphalt pavement damage to the asphalt pavement 12. When the central bladder 3 ruptures, part of the capsule-shaped asphalt mixture 6 released from the central bladder 3 is within the support frame 2, and part flows through the elongated hole 5 outside the capsule-shaped individual 10 and out into the crack. This facilitates the uniform repair of cracks, depressions, or other forms of asphalt pavement damage by the capsule-shaped asphalt mixture 6, resulting in a durable and long-lasting repair effect. It enables standardized repairs at low cost in localized areas, thus extending the service life of the asphalt pavement 12.

[0046] In this embodiment, construction workers can cut or tear multiple capsule-shaped units 10 by cutting the fractured indentation 11 to form a corresponding size and shape to repair the corresponding part on the asphalt pavement 12. This is convenient to operate and reduces repair costs.

[0047] Specific Implementation Method Six: This implementation method is a further limitation of Specific Implementation Methods One, Two, Three, Four, or Five. Each central capsule 3 is a hemispherical capsule. When two cutting and breaking indentations 11 are processed on the base plate 1 of each capsule-type unit 10, the two cutting and breaking indentations 11 are located on the same radial line of the central capsule 3. This arrangement facilitates the tearing or cutting of the central capsule 3 when any or both of the two cutting and breaking indentations 11 are torn or cut, thereby achieving the purpose of releasing the capsule-type asphalt mixture 6 as needed. When the construction personnel divide the capsule-type unit 10 through the cutting and breaking indentation 11, the ruptured central capsule 3 releases the capsule-type asphalt mixture 6, which flows into and permeates the corresponding position of the asphalt pavement 12 to achieve local repair.

[0048] Specific Implementation Method Seven: This implementation method further defines Specific Implementation Method Six. Each support frame 2 is hexagonal in shape and includes six support plates 2-1. The first and last ends of the six support plates 2-1 are connected sequentially to form a hexagonal frame. Each bottom piece 1 is connected to the bottom side of each support plate 2-1 in its corresponding support frame 2. Each support plate 2-1 has a long hole 5 machined along its thickness direction. The length direction of each long hole 5 is the same as the length direction of the support plate 2-1. Each long hole 5 is located near the top side of the support plate 2-1. Each support plate 2-1 in a capsule-type monomer 10 is attached to one support plate 2-1 in another adjacent capsule-type monomer 10. The receiving cavity 4 in a capsule-type monomer 10 is connected to the receiving cavity 4 of its adjacent capsule-type monomer 10 through the long hole 5. The optimal form of the support frame 2 is hexagonal, which is stable and has multiple release directions. Each long hole 5 is a release direction, which is beneficial to improving the uniformity of paving after the capsule-type asphalt mixture 6 is released. In addition, the support frame 2 can also be made into a triangle, quadrilateral or octagon according to specific design needs and actual requirements.

[0049] Specific Implementation Method Eight: This implementation method is a further limitation of Specific Implementation Methods Five, Six, or Seven. The thickness of the substrate 1 is less than the thickness of the support frame 2, and the thickness of the support frame 2 is less than or equal to 5mm. 5mm is the optimal thickness of the support frame 2 when repairing localized areas. This facilitates control over the paving thickness of the capsule-type asphalt mixture 6 and also allows for control over the amount of capsule-type asphalt mixture 6 used. This controls costs while ensuring an effective and continuous repair effect after the capsule-type asphalt mixture 6 has solidified. The support frame 2 at this size is a small-sized form, and the capsule-type unit 10 can also be made into different specifications. The connection method and relative size ratio of the substrate 1, support frame 2, and central bladder 3 are consistent in different specifications, thereby ensuring that the substrate 1 and support frame 2 cooperate to provide a release paving structure with corresponding areas for the central bladder 3 of different volumes.

[0050] Specific Implementation Method Nine: This implementation method is a further limitation of Specific Implementation Methods Five, Six, Seven or Eight. The cutting fracture indentation 11 includes multiple elongated holes. Elongated holes are processed on the top surface of the substrate 1 along its thickness direction. The multiple elongated holes are spaced apart. When the multiple elongated holes are connected after being sheared or torn by external force, the central bladder 3 is in the state of releasing the capsule-type asphalt mixture 6.

[0051] Furthermore, when construction workers use external force to squeeze or directly cut or tear along the cut fracture groove 11, the capsule-type asphalt mixture 6 can be released through the central bladder 3, which facilitates the repair of cracks in the asphalt pavement 12.

[0052] Specific Implementation Method 10: This implementation method is a further limitation of Specific Implementation Methods 5, 6, 7, 8 or 9. The capsule-type asphalt mixture 6 includes an asphalt binder and several double-layer composite capsules 6-1. The several double-layer composite capsules 6-1 are in the asphalt binder. The mixing ratio of the two is determined according to the specific preparation requirements and preparation method. The operation method is the existing preparation method for the combination of asphalt binder and capsules. Each double-layer composite capsule 6-1 includes an outer shell 6-1-1, an inner shell 6-1-2, an outer core 6-1-3, and an inner core 6-1-4. Both the outer shell 6-1-1 and the inner shell 6-1-2 are capsule-shaped shells. The outer shell 6-1-1 and the inner shell 6-1-2 are coaxially arranged from the outside to the inside. The outer core 6-1-3 is disposed between the inner wall of the outer shell 6-1-1 and the outer wall of the inner shell 6-1-2. The inner core 6-1-4 is disposed inside the inner shell 6-1-2. The inner core 6-1-4 is a core made of a latent heat storage phase change material. Phase change materials are latent heat storage materials with great potential in road engineering applications, and can effectively improve road defects such as rutting, deformation, and frost cracking under high and low temperature conditions.

[0053] In this embodiment, the several double-layer composite capsules 6-1 in the capsule-type asphalt mixture 6 are stable in asphalt. When the several double-layer composite capsules 6-1 are combined with the asphalt binder, they can improve the repair effect of cracks in the asphalt pavement 12.

[0054] In this embodiment, the inner core 6-1-4 is an inner phase change microcapsule core structure, specifically composed of octanoic acid and tetradecane. It changes from liquid to solid at low temperatures, releasing heat, slowing down the asphalt cooling rate of the asphalt pavement 12, regulating the low-temperature environment of road engineering, and improving the low-temperature crack resistance of asphalt binder.

[0055] The inner shell 6-1-2 is an inner phase change microcapsule shell structure, specifically composed of a mixture of polyvinyl alcohol and methyl methacrylated melamine resin to form a dual polymer. Carbon nanotubes are entangled with the dual polymer and deposited within the inner shell wall. The dual polymer, as the inner shell material, improves the strength and chemical stability of the phase change microcapsule; the carbon nanotubes, as a photothermal material, convert light energy into heat energy, enhancing the energy storage effect of the phase change material. Simultaneously, the carbon nanotubes generate heat energy under the influence of an external electric or magnetic field, further improving the energy storage capacity of the phase change material.

[0056] The outer core 6-1-3 is a ring-shaped structure, also serving as an outer microcapsule core structure, sandwiched between the outer shell 6-1-1 and the inner shell 6-1-2. The outer core 6-1-3 is an external self-healing microcapsule core structure, specifically composed of a core material made up of bio-oil and carbon nanotubes. The carbon nanotubes enhance the filling effect of the bio-oil on cracks and pores in the asphalt pavement 12, improve the permeability and repairability of the bio-oil, and enhance the self-healing properties of the asphalt material.

[0057] The outer shell 6-1-1 is the outer self-healing microcapsule shell structure, specifically formed by mixing polyvinyl alcohol and methyl hydroxymethyl melamine resin to form a dual polymer. Carbon nanotubes are entangled with the dual polymer and deposited in the outer shell wall. The dual polymer, as the shell material, improves the self-healing microcapsule's responsiveness to the external environment; polyvinyl alcohol, as a vulnerable component of the shell material, is more susceptible to damage and accelerates the release of the core material; methyl hydroxymethyl melamine resin, due to its high cross-linking density and low formaldehyde content, possesses advantages of high stability and harmlessness; carbon nanotubes endow the self-healing microcapsule with both thermal induction and self-healing mechanisms, enhancing the shell material's resistance to damage and the core material's release effect. Simultaneously, its thermal induction also improves the self-healing ability of the asphalt material.

[0058] The preparation process and parameters of the double-layer composite capsule 6-1 in this embodiment are as follows:

[0059] The bilayer composite capsule 6-1 was prepared by in-situ polymerization. Specifically, the inner high-energy-storage phase change microcapsule was prepared first; then the outer microcapsule core structure and outer microcapsule shell structure were prepared; finally, the high-energy-storage phase change microcapsule and the outer microcapsule core structure were mixed, and the outer microcapsule shell structure was slowly added to form the bilayer composite capsule 6-1.

[0060] The working principle of the capsule-type monomer 10 in this utility model is as follows:

[0061] The capsule-shaped monomers 10 are released to fill and repair corresponding locations on the asphalt pavement 12. The base plate 1 and the support frame 2 work together to provide bottom and circumferential support for the central capsule, which is suitable for the laying of the central capsule 3 and the release process of the capsule-shaped asphalt mixture. The repair effect of the capsule-shaped asphalt mixture being evenly spread after the central capsule 3 is ruptured and released is more suitable for completing the point repair process on the asphalt pavement 12, which is conducive to the standardized treatment of point repair.

[0062] The working principle of the capsule-type self-cutting membrane in this utility model:

[0063] According to the local location of the asphalt pavement 12, capsule-type self-cutting membranes are laid to achieve local area filling and repair. This can be achieved by cooperating with multiple capsule-type units 10. According to the width of the crack in the asphalt pavement 12 to be repaired, the membranes are cut to form a sheet structure with a suitable area. Single or multiple sheets are stacked and laid to fill the crack in the asphalt pavement 12. After cutting, external force puncturing or filling, the central capsule 3 is self-decomposed to rupture the central capsule 3 and release the capsule-type asphalt mixture, thus completing the paving and repair process.

[0064] Combination Figure 4 As shown, when the shape of the local part of the asphalt pavement 12 that needs to be repaired is irregular, capsule-shaped self-cutting membranes are cut to fit the shape of the corresponding repair location and laid accordingly. Each capsule-shaped unit 10 in the capsule-shaped self-cutting membrane is complete. After the capsule-shaped self-cutting membrane is released by heating or tearing according to specific requirements, the released capsule-shaped asphalt mixture 6, together with the limiting support of the base plate 1 and the support frame 2, realizes the process of filling and repairing at the local predetermined location.

[0065] Combination Figure 5As shown, when the edge shape of the local location of the asphalt pavement 12 that needs to be repaired is regular, a capsule-type self-cutting membrane is cut into a suitable shape according to the shape of the corresponding repair location and laid accordingly. The capsule-type individual 10 at the edge of the capsule-type self-cutting membrane can be cut into a flat shape through the cutting fracture indentation 11, which makes it easier to release the capsule-type asphalt mixture 6. The other capsule-type individual 10s not at the edge are intact. After the capsule-type self-cutting membrane is released by heating or tearing according to specific requirements, the released capsule-type asphalt mixture 6, together with the limiting support of the base plate 1 and the support frame 2, realizes the process of filling and repairing the local predetermined location.

Claims

1. A capsule-shaped monomer for asphalt pavement repair, characterized in that: The device includes a substrate (1), a support frame (2), and a central bladder (3). The substrate (1) is horizontally positioned, and the support frame (2) is positioned on the substrate (1). A cavity (4) is formed between the inner wall of the support frame (2) and the top surface of the substrate (1). The support frame (2) is a polygonal frame with multiple elongated holes (5) machined along its length. Each elongated hole (5) is connected to the cavity (4). The central bladder (3) is positioned inside the cavity (4). The bottom of the central bladder (3) is connected to the top surface of the substrate (1). The outer wall of the central bladder (3) is separated from the inner wall of the support frame (2). The central bladder (3) is filled with a capsule-shaped asphalt mixture (6).

2. The capsule-type monomer for asphalt pavement repair according to claim 1, characterized in that: The support frame (2) is hexagonal in shape, and the shape of the base plate (1) is set to match the shape of the support frame (2). The thickness of the support frame (2) is less than or equal to 5mm.

3. The capsule-shaped monomer for asphalt pavement repair according to claim 2, characterized in that: The central sac (3) is a hemispherical sac.

4. The capsule-shaped monomer for asphalt pavement repair according to claim 1, characterized in that: The film (1) is a flexible film.

5. The capsule-shaped monomer for asphalt pavement repair according to claim 1, characterized in that: The encapsulated asphalt mixture (6) comprises an asphalt binder and several double-layered composite capsules (6-1), the several double-layered composite capsules (6-1) being contained within the asphalt binder. Each double-layered composite capsule (6-1) comprises an outer shell (6-1-1), an inner shell (6-1-2), an outer core (6-1-3), and an inner core (6-1-4). -2) Both are capsule-shaped shells. The outer shell (6-1-1) and the inner shell (6-1-2) are arranged coaxially from the outside to the inside. An outer core (6-1-3) is arranged between the inner wall of the outer shell (6-1-1) and the outer wall of the inner shell (6-1-2). An inner core (6-1-4) is arranged inside the inner shell (6-1-2). The inner core (6-1-4) is a core made of energy storage phase change material.

6. A capsule-type self-cutting diaphragm for asphalt pavement repair, comprising the capsule-type monomer for asphalt pavement repair as described in any one of claims 1 to 5, characterized in that: The device includes multiple capsule-shaped units (10), each capsule-shaped unit (10) including a base plate (1), a support frame (2) and a central bladder (3). The base plate (1) is horizontally arranged, and the support frame (2) is arranged on the base plate (1). A receiving cavity (4) is formed between the inner wall of the support frame (2) and the top surface of the base plate (1). The support frame (2) is a polygonal frame. Multiple elongated holes (5) are processed along the length of the support frame (2). Each elongated hole (5) is connected to the receiving cavity (4). The central bladder (3) is arranged inside the receiving cavity (4). The bottom of the central bladder (3) is connected to the top surface of the base plate (1). The outer wall of the central bladder (3) is separated from the inner wall of the support frame (2). The central bladder (3) is filled with capsule-shaped asphalt mixture (6). The two receiving cavities (4) of two adjacent capsule-shaped units (10) are connected. At least one cutting and breaking indentation (11) is processed on the base plate (1) of each capsule-shaped unit (10).

7. The capsule-type self-cutting membrane according to claim 6, characterized in that: Each central capsule (3) is a hemispherical capsule. When two cutting breaks (11) are processed on the substrate (1) of each capsule monomer (10), the two cutting breaks (11) are located on the same radial line of the central capsule (3).

8. The capsule-type self-cutting membrane according to claim 6 or 7, characterized in that: Each support frame (2) is hexagonal in shape. Each support frame (2) includes six support plates (2-1). The first and last ends of the six support plates (2-1) are connected in sequence to form a hexagonal frame. Each bottom piece (1) is connected to the bottom side of each support plate (2-1) in its corresponding support frame (2). Each support plate (2-1) has a long hole (5) processed along its thickness direction. The length direction of each long hole (5) is in the same direction as the length direction of the support plate (2-1). Each long hole (5) is set close to the top side of the support plate (2-1). Each support plate (2-1) in a capsule-type unit (10) is attached to a support plate (2-1) in another adjacent capsule-type unit (10). The receiving cavity (4) in a capsule-type unit (10) is connected to the receiving cavity (4) of the adjacent capsule-type unit (10) through the long hole (5).

9. The capsule-type self-cutting membrane according to claim 6, characterized in that: The thickness of the film (1) is less than the thickness of the support frame (2), and the thickness of the support frame (2) is less than or equal to 5 mm.

10. The capsule-type self-cutting membrane according to claim 6, characterized in that: The cutting fracture indentation (11) includes multiple elongated holes. The top surface of the substrate (1) is processed with elongated holes along its thickness direction. Multiple elongated holes are spaced apart. When multiple elongated holes are sheared or torn by external force and connected, the central bladder (3) is in the state of releasing the capsule-type asphalt mixture (6).

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