An apparatus for simulating the aging of actual road asphalt mixtures

Abstract

The utility model discloses a kind of instruments simulating actual road asphalt mixture aging, including machine body and multiple support plates, the inside of machine body is provided with containing cavity, the top of containing cavity is through the top of machine body, the sidewall of machine body is provided with multiple horizontal slots, slot and support plate are mutually clamped, the top of machine body is provided with cover plate;Control module, simulated precipitation component, simulated temperature component and simulated illumination component are arranged in machine body, control module is electrically connected with simulated precipitation component, simulated temperature component and simulated illumination component respectively;The periphery of support plate is provided with mounting groove, the center of support plate is provided with limit hole, limit hole vertically through the top and bottom of support plate.The utility model's machine body integrates simulated precipitation component, simulated temperature component and simulated illumination component, can highly restore the natural aging condition experienced by asphalt mixture in actual road, solve the problem that traditional instrument can only simulate single element.

Description

Technical Field

[0001] This utility model relates to the technical field of instruments for aging asphalt mixtures, specifically an instrument for simulating the aging of actual road asphalt mixtures. Background Technology

[0002] In actual road environments, the aging of asphalt mixtures is the result of the combined effects of multiple factors, and the aging conditions experienced by mixtures at different depths vary significantly.

[0003] Some instruments focus solely on simulating the aging effects of light on asphalt, irradiating asphalt samples with light sources of specific wavelengths and intensities to study changes in asphalt properties under photo-oxidation. Other instruments simulate only temperature factors, placing asphalt samples in a constant or varying temperature field using heating devices to study the impact of thermo-oxidative aging on its properties.

[0004] Therefore, instruments for simulating asphalt aging can only simulate a single factor, which means that researchers can only understand the impact of a single factor on asphalt aging in a one-sided manner, and cannot build an aging model under the combined effect of multiple factors. Utility Model Content

[0005] To address the aforementioned shortcomings, this invention proposes an instrument for simulating the aging of asphalt mixtures on actual roads. The instrument integrates components for simulating precipitation, temperature, and light, and achieves coordinated control through a control module. It can highly replicate the natural aging conditions experienced by asphalt mixtures on actual roads, providing an experimental environment close to real-world conditions for studying the aging mechanism of asphalt mixtures. This effectively overcomes the shortcomings of traditional laboratory aging tests, which show significant differences from actual road aging, and solves the problem that traditional instruments can only simulate a single element.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An instrument for simulating the aging of asphalt mixtures on actual roads includes a body and multiple support plates. The body has an internal cavity with the top of the cavity extending through the top of the body. The side walls of the body have multiple horizontal slots that engage with the support plates and communicate with the cavity. The top of the body has a cover plate for sealing the top of the cavity.

[0008] The machine body is equipped with a control module, a simulated precipitation component, a simulated temperature component, and a simulated light component. The simulated precipitation component and the simulated light component are both located on the top of the receiving cavity, and the simulated temperature component is located on the support plate. The control module is electrically connected to the simulated precipitation component, the simulated temperature component, and the simulated light component respectively.

[0009] The support plate has mounting grooves on all four sides, with the openings of the mounting grooves facing upwards. The mounting grooves are used to hold bottled asphalt samples. A limiting hole is opened in the center of the support plate, which vertically penetrates the top and bottom of the support plate. Multiple limiting holes on the support plates are used to place the asphalt mixture and restrict its movement.

[0010] The simulated temperature component includes a heating element and a temperature sensor. The multiple support plates are each embedded with a heating element and a temperature sensor. The control module is electrically connected to the heating element and the temperature sensor, respectively.

[0011] The simulated lighting component includes an ultraviolet panel light, which is located at the bottom of the cover plate and is used to simulate outdoor ultraviolet radiation intensity.

[0012] The simulated precipitation component includes an inlet pipe, a spray connector, and a drain pipe. The inlet pipe is located at the top of the machine body, with its input end connected to an external water supply device and its output end connected to the spray connector, which is located inside the receiving cavity. The drain pipe is located at the bottom of the machine body, with its input end connected to the bottom of the receiving cavity and its output end connected to an external drainage device.

[0013] The input end of the spray connector is equipped with a precipitation control valve, which is electrically connected to the control module.

[0014] An air intake pipe is provided on the top of the machine body. The output end of the air intake pipe is connected to the top of the receiving cavity. An air intake control valve is provided on the input end of the air intake pipe. The air intake control valve is electrically connected to the control module.

[0015] An exhaust pipe is provided at the bottom of the machine body, and the exhaust pipe connects the receiving cavity to the external environment.

[0016] The machine body is provided with a lifting component at the bottom of the receiving cavity. The movable end of the lifting component passes through the limiting hole of the support plate. The lifting component is used to vertically lift the asphalt mixture so that the top of the asphalt mixture passes through the receiving cavity.

[0017] Both the inner wall of the body and the outer wall of the support plate are provided with a heat insulation layer.

[0018] The technical solution of this utility model can include the following beneficial effects:

[0019] 1. The machine integrates simulated precipitation, simulated temperature and simulated light components, and achieves coordinated control through the control module. It can highly reproduce the natural aging conditions experienced by asphalt mixtures in actual roads, providing an experimental environment close to real working conditions for studying the aging mechanism of asphalt mixtures. It effectively makes up for the shortcomings of traditional laboratory aging tests and actual road aging, and solves the problem that traditional instruments can only simulate a single element.

[0020] 2. In actual road structures, asphalt mixtures of different surface thicknesses experience significant temperature differences, which directly affect the aging rate and degree of each layer of the mixture. By independently adjusting the heating components of different support plates, the temperature parameters corresponding to each support plate can be precisely set, ensuring that the asphalt samples and asphalt mixtures on each support plate are in a temperature environment that matches the different thicknesses of the actual road. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of an instrument for simulating the aging of actual road asphalt mixtures, according to one embodiment of this utility model.

[0022] Figure 2 This is a schematic diagram of a support plate according to one embodiment of the present invention;

[0023] The components include: 1. Body; 11. Cover plate; 2. Support plate; 21. Mounting groove; 22. Limiting hole; 3. Simulated precipitation component; 31. Water inlet pipe; 32. Spraying connector; 33. Drain pipe; 34. Air inlet pipe; 35. Exhaust pipe; 4. Simulated temperature component; 41. Heating component; 42. Temperature sensor; 5. Simulated lighting component; 6. Lifting component. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The following is combined with Figures 1 to 2 This invention describes an instrument for simulating the aging of actual road asphalt mixtures according to an embodiment of the present invention.

[0029] An instrument for simulating the aging of asphalt mixtures on actual roads includes a body 1 and multiple support plates 2. The body 1 has an internal cavity, the top of which extends through the top of the body 1. The side walls of the body 1 have multiple horizontal slots that engage with the support plates 2 and communicate with the cavity. The top of the body 1 has a cover plate 11 for sealing the top of the cavity.

[0030] The body 1 is equipped with a control module, a simulated precipitation component 3, a simulated temperature component 4, and a simulated light component 5. The simulated precipitation component 3 and the simulated light component 5 are both located on the top of the receiving cavity. The simulated temperature component 4 is located on the support plate 2. The control module is electrically connected to the simulated precipitation component 3, the simulated temperature component 4, and the simulated light component 5 respectively.

[0031] The support plate 2 has mounting grooves 21 on all four sides, with the openings of the mounting grooves 21 facing upwards. The mounting grooves 21 are used for bottled asphalt samples. The support plate 2 has a limiting hole 22 in the center, which vertically penetrates the top and bottom of the support plate 2. Multiple limiting holes 22 on the support plate 2 are used to place the asphalt mixture and restrict its movement.

[0032] The support plate 2 is horizontally inserted into the machine body 1. Since the top of the support plate 2 has an installation groove 21, the operator can place the bottled asphalt sample into the receiving groove. Preferably, the top of the bottled asphalt sample is flush with the top of the support plate 2, which can ensure that when the support plate 2 is pulled outward, the bottled asphalt sample will not be too high and cause the support plate 2 to be stuck.

[0033] Each of the multiple support plates 2 has a limiting hole 22 at its center. When the multiple support plates 2 are inserted into the machine body 1, the multiple limiting holes 22 can form a space to restrict the movement of the asphalt mixture.

[0034] The machine body 1 integrates a simulated precipitation component 3, a simulated temperature component 4, and a simulated light component 5, and achieves coordinated regulation through a control module. It can highly reproduce the natural aging conditions experienced by asphalt mixtures in actual roads, providing an experimental environment close to real working conditions for studying the aging mechanism of asphalt mixtures. It effectively makes up for the shortcomings of traditional laboratory aging tests and actual road aging, and solves the problem that traditional asphalt environment simulation instruments can only simulate a single element.

[0035] In addition, bottled asphalt samples and asphalt mixtures were placed inside the machine body 1 at the same time, so that the experimenters could simultaneously obtain aging data of bottled asphalt samples and asphalt mixtures under the same aging conditions, which would facilitate the analysis of the correlation between the two during the aging process.

[0036] It is worth noting that the horizontal slot on the side wall of the machine body 1 is connected to the support plate 2 by a snap-fit ​​mechanism, which not only facilitates the quick installation and removal of the support plate 2 to replace samples, but also ensures the stability of the support plate 2 during the simulation process. A support and positioning structure is installed inside the machine body 1 to guarantee the stability of the support plate 2 during the experiment and prevent factors such as vibration from affecting the experimental results.

[0037] The simulated temperature component 4 includes a heating element 41 and a temperature sensor 42. The multiple support plates 2 are each inlaid with a heating element 41 and a temperature sensor 42. The control module is electrically connected to the heating element 41 and the temperature sensor 42 respectively.

[0038] In actual road structures, asphalt mixtures of different surface thicknesses (such as top, middle, and bottom layers) experience significant temperature differences, which directly affect the aging rate and degree of each layer. By independently adjusting the heating components 41 of different support plates 2, the temperature parameters corresponding to each support plate 2 can be precisely set, ensuring that the asphalt samples and asphalt mixtures on each support plate 2 are placed in temperature environments that match the different thicknesses of the actual road. This layered simulation method overcomes the limitations of traditional instruments that only control the overall ambient temperature, and can more realistically reproduce the temperature gradient caused by thickness differences within the road structure, providing more realistic experimental conditions for studying the aging characteristics of asphalt mixtures of different thicknesses.

[0039] The simulated lighting component 5 includes an ultraviolet panel light, which is located at the bottom of the cover plate 11. The ultraviolet panel light is used to simulate outdoor ultraviolet intensity.

[0040] It is worth noting that in this embodiment, the ultraviolet panel light is preferably a waterproof ultraviolet panel light covering the entire wavelength range. The ultraviolet panel light works synergistically with other functional components of the instrument. When the ultraviolet panel light and the simulated temperature component 4 work together, they can simulate the coupled aging effect of ultraviolet radiation and temperature on asphalt mixtures; when the simulated precipitation component 3, the ultraviolet panel light, and the simulated temperature component 4 work together, they can reproduce the complex aging scenario under the combined effects of rainwater erosion, ultraviolet radiation, and temperature changes. This ability to simulate multiple factors synergistically allows researchers to more accurately grasp the aging patterns of asphalt mixtures in actual roads, avoiding experimental result deviations caused by single-factor simulations, and providing a more reliable basis for related research.

[0041] The simulated precipitation component 3 includes an inlet pipe 31, a spray connector 32, and a drain pipe 33. The inlet pipe 31 is located at the top of the body 1, and its input end is connected to an external water supply device. The output end of the inlet pipe 31 is connected to the spray connector 32, which is located inside the receiving cavity. The drain pipe 33 is located at the bottom of the body 1, and its input end is connected to the bottom of the receiving cavity. The output end of the drain pipe 33 is connected to an external drainage device.

[0042] The input end of the spray connector 32 is equipped with a precipitation control valve, which is electrically connected to the control module.

[0043] The inlet pipe 31 is connected to an external water supply device, providing a stable water source, while the spray connector 32 sprays water into the containment cavity, realistically simulating the increased air humidity after natural rainfall. The precipitation control valve is electrically connected to the control module, allowing researchers to precisely adjust the spray volume, frequency, and duration, thereby accurately controlling humidity changes within the containment cavity.

[0044] Staff can choose whether to add a waterproof cover to the top of the bottled asphalt samples, depending on the testing needs. When testing the effects of different water qualities on asphalt, the waterproof cover can be removed and the water source supplied by an external water supply device can be replaced. For example, simulating rainwater containing a certain amount of salt (coastal areas) or rainwater containing acidic substances (acid rain areas) can help study the special effects of different water qualities on the aging of asphalt mixtures, providing more comprehensive experimental support for the development of anti-aging asphalt mixtures tailored to the characteristics of different regional environments.

[0045] An air inlet pipe 34 is provided on the top of the body 1. The output end of the air inlet pipe 34 is connected to the top of the receiving cavity. An air inlet control valve is provided on the input end of the air inlet pipe 34. The air inlet control valve is electrically connected to the control module.

[0046] The bottom of the body 1 is provided with an exhaust pipe 35, which connects the receiving cavity to the external environment.

[0047] The exhaust pipe 35 simulates the flow and exchange of gases in the natural environment. By adjusting the opening and closing status of the exhaust control valve through the control module, the exhaust rate and volume of gas discharged from the containment chamber can be precisely controlled, reproducing the aging scenarios of asphalt mixtures under different ventilation conditions. For example, it can simulate the flow of gases around the road surface when the wind force is different, making the experimental environment closer to the gas exchange state of actual roads, and providing reliable experimental conditions for studying the feedback effect of volatile gases on the aging of asphalt mixtures.

[0048] The machine body 1 is provided with a lifting component 6 at the bottom of the receiving cavity. The movable end of the lifting component 6 passes through the limiting hole 22 of the support plate 2. The lifting component 6 is used to vertically lift the asphalt mixture so that the top of the asphalt mixture passes through the receiving cavity.

[0049] It should be noted that the lifting component 6 in this embodiment is preferably a commercially available lifting device with a waterproof structure. After the experiment, the control module activates the lifting component 6 to lift the asphalt mixture upwards, so that its top protrudes from the receiving cavity. At this time, more of the asphalt mixture is exposed to the external space, and the staff can easily grab or lift the sample without having to go deep into the receiving cavity, which significantly reduces the difficulty of picking up and placing the sample.

[0050] Both the inner wall of the body 1 and the outer wall of the support plate 2 are provided with a heat insulation layer.

[0051] The insulation layer effectively reduces heat exchange between the cavity and the external environment, maintaining a stable internal temperature. In actual experiments, the heating element 41 raises the internal temperature, while the external temperature may fluctuate. Without the insulation layer, heat would easily escape through the wall of the machine body 1, leading to unstable internal temperature and affecting the precise control of the aging temperature conditions of asphalt mixtures. Furthermore, the insulation layer significantly reduces heat loss, allowing the control module to more easily maintain the internal temperature within the preset range, ensuring temperature parameter stability and providing a constant temperature environment for asphalt mixture aging simulation.

[0052] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. An instrument for simulating the aging of actual road asphalt mixtures, characterized in that, The device includes a body and multiple support plates. The body has an internal cavity with the top of the cavity extending through the top of the body. The side walls of the body have multiple horizontal slots that engage with the support plates and communicate with the cavity. The top of the body has a cover plate for sealing the top of the cavity. The machine body is equipped with a control module, a simulated precipitation component, a simulated temperature component, and a simulated light component. The simulated precipitation component and the simulated light component are both located on the top of the receiving cavity, and the simulated temperature component is located on the support plate. The control module is electrically connected to the simulated precipitation component, the simulated temperature component, and the simulated light component respectively. The support plate has mounting grooves on all four sides, with the openings of the mounting grooves facing upwards. The mounting grooves are used to hold bottled asphalt samples. A limiting hole is opened in the center of the support plate, which vertically penetrates the top and bottom of the support plate. Multiple limiting holes on the support plates are used to place the asphalt mixture and restrict its movement.

2. The instrument for simulating the aging of actual road asphalt mixtures according to claim 1, characterized in that, The simulated temperature component includes a heating element and a temperature sensor. The multiple support plates are each embedded with a heating element and a temperature sensor. The control module is electrically connected to the heating element and the temperature sensor, respectively.

3. The instrument for simulating the aging of actual road asphalt mixtures according to claim 2, characterized in that, The simulated lighting component includes an ultraviolet panel light, which is located at the bottom of the cover plate and is used to simulate outdoor ultraviolet radiation intensity.

4. The instrument for simulating the aging of actual road asphalt mixtures according to claim 3, characterized in that, The simulated precipitation component includes an inlet pipe, a spray connector, and a drain pipe. The inlet pipe is located at the top of the machine body, with its input end connected to an external water supply device and its output end connected to the spray connector, which is located inside the receiving cavity. The drain pipe is located at the bottom of the machine body, with its input end connected to the bottom of the receiving cavity and its output end connected to an external drainage device. The input end of the spray connector is equipped with a precipitation control valve, which is electrically connected to the control module.

5. The instrument for simulating the aging of actual road asphalt mixtures according to claim 4, characterized in that, An air intake pipe is provided on the top of the machine body. The output end of the air intake pipe is connected to the top of the receiving cavity. An air intake control valve is provided on the input end of the air intake pipe. The air intake control valve is electrically connected to the control module. An exhaust pipe is provided at the bottom of the machine body, and the exhaust pipe connects the receiving cavity to the external environment.

6. The instrument for simulating the aging of actual road asphalt mixtures according to claim 5, characterized in that, The machine body is provided with a lifting component at the bottom of the receiving cavity. The movable end of the lifting component passes through the limiting hole of the support plate. The lifting component is used to vertically lift the asphalt mixture so that the top of the asphalt mixture passes through the receiving cavity.

7. The instrument for simulating the aging of actual road asphalt mixtures according to claim 6, characterized in that, Both the inner wall of the body and the outer wall of the support plate are provided with a heat insulation layer.

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