Asphalt mixture test piece environment simulation test box

Abstract

The utility model discloses an asphalt mixture test piece environment simulation test box, which relates to the technical field of asphalt test, and comprises a test box body, an outer box body and an inner box body, the inner box body is provided with a rollover box door, the rollover box door is provided with a double-layer heat insulation glass layer, and a hollow cavity for placing a test piece is arranged in the inner box body; the heating pipe is attached to the outer side of the inner box body; the liquid nozzle is located at the top of the inner box body and connected to the water tank through a water pipe, and the water pipe is connected with a water pump; the ultraviolet radiation lamp tube is positioned at the top of the inner box body; the multi-field coupling effect of high and low temperature, water spraying, tail gas spraying and ultraviolet radiation can be realized, and the environmental influence on the asphalt pavement in the actual use process can be simulated; and a support is provided for researching the performance decay rule of the asphalt pavement under the multi-field coupling effect.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt testing, in particular to an asphalt mixture specimen environment simulation test box. Background Art

[0002] Asphalt mixtures, used as road surfaces, are subject to a variety of complex environmental factors during use, including rain, UV radiation, vehicle exhaust, and high temperatures. Under vehicle loads, their performance rapidly degrades, resulting in cracking, deformation, and potholes. Damage to asphalt pavements not only impacts driving comfort but, in severe cases, safety. Aging, such as thermal aging and UV aging, is one of the most significant factors affecting the quality and lifespan of asphalt pavements. UV aging reduces asphalt viscosity and adhesion to aggregate, leading to cracking and, in more severe cases, asphalt detachment from the aggregate surface, resulting in potholes. If not promptly repaired, this can lead to further problems such as mud pumping, which can impact the pavement's service life. Western regions, particularly the high-altitude areas of Tibet, experience strong UV radiation, and asphalt pavements are constantly exposed to strong UV radiation. Pavement problems caused by asphalt aging are common. Therefore, performance testing is crucial during the development of asphalt mixtures, and the ability to fully simulate actual operating conditions is a crucial factor in determining the performance of asphalt mixtures. Most of the existing environmental test chambers used for asphalt mixture performance research are high and low temperature test chambers, which simulate heating, low temperature, freeze-thaw environments, etc. on asphalt mixture specimens, but cannot simulate the real environment. There is an urgent need for an environmental test chamber that can fully simulate the actual environment of asphalt mixture working conditions. Utility Model Content

[0003] Technical problems to be solved by utility models

[0004] In response to the technical problem that existing asphalt mixture environmental simulation test chambers are unable to simulate real environments, the utility model provides an asphalt mixture specimen environmental simulation test chamber, which can perform multi-field coupling of high and low temperatures, water spraying, exhaust gas injection and ultraviolet radiation to simulate the environmental impacts on asphalt pavements during actual use, and provide support for studying the performance decay laws of asphalt pavements under multi-field coupling.

[0005] Technical Solution

[0006] In order to solve the above problems, the technical solution provided by the present invention is as follows:

[0007] An asphalt mixture specimen environmental simulation test box includes a test box body, including an outer box and an inner box, the inner box is provided with a rollover door and the rollover door has a double-layer thermal insulation glass layer, and the inner box is provided with a hollow cavity for placing the specimen; a heating pipe is attached to the outside of the inner box; a liquid nozzle is located at the top of the inner box and is connected to a water tank through a water pipe, and the water pipe is connected to a water pump; an ultraviolet radiation lamp is located at the top of the inner box; a gas nozzle is connected to the inner box and is connected to an exhaust gas storage device through a gas pipe.

[0008] The inner chamber houses the components required for testing and features a rollover door for easy access. The rollover door is equipped with double-layered insulated glass, maintaining a stable internal temperature while allowing direct observation of the specimens. A hollow chamber, located within the inner chamber, houses the asphalt mixture specimens. Heating pipes, mounted on the outside, regulate and maintain the chamber's temperature, simulating varying temperature conditions. A liquid spray nozzle, located at the top of the inner chamber, pumps water from an external tank to treat the specimens. Ultraviolet radiation lamps, also located at the top of the inner chamber, simulate ultraviolet radiation from sunlight to investigate its effects on asphalt degradation. A gas spray nozzle, connected to an exhaust gas storage device, releases specific gases (such as vehicle exhaust) into the chamber, simulating a realistic polluted environment. Multi-environmental factor simulation: This test chamber can simulate multiple environmental factors simultaneously or sequentially, including high and low temperature fluctuations, rain erosion, exhaust emissions, and UV radiation, more closely resembling the conditions faced by real-world asphalt pavement. Precise Control: The external control system (including the control panel) allows precise adjustment of various environmental parameters to ensure the consistency and accuracy of experimental conditions. Comprehensive Evaluation of Material Performance: The equipment can be used to obtain first-hand information on the changes in the physical and chemical properties of asphalt mixtures under complex environmental conditions, which helps to deeply understand the aging mechanism of materials and their ability to withstand harsh environments.

[0009] Optionally, the heating tubes are evenly distributed on the outside of the inner box in a bow shape.

[0010] The bow-shaped distribution allows heat to be more evenly distributed throughout the inner chamber, preventing localized overheating or overcooling. This is crucial for simulating real-world conditions, as temperature fluctuations in nature are typically smooth and uniform. Compared to linear or other simpler distribution patterns, the bow-shaped design allows heat to more effectively cover the entire inner chamber surface, improving heating efficiency and shortening the time it takes to reach the set temperature.

[0011] Optionally, the heating pipes are provided on both sides of the inner box.

[0012] Heating tubes located on both sides of the inner chamber ensure even heat transfer to the specimen from multiple directions, reducing temperature gradients and ensuring more consistent temperature conditions across the specimen. Heating from both sides of the chamber increases the chamber temperature more quickly, shortening the time required to reach the set temperature and improving experimental efficiency.

[0013] Optionally, the bottom of the inner box body is connected to a water tank through a water collection port, and a drainage hole is provided at the bottom of the water tank.

[0014] The water collection port at the bottom of the inner box can collect the water generated during the test and guide the water into the water tank through the water pipe. This can realize the recycling of water resources and reduce waste.

[0015] Optionally, a cover is provided on the top of the water tank, and the cover is provided with a cover handle.

[0016] The lid handle allows the experimenter to easily open the lid and add the test spray solution to the water tank. This is very convenient during experimental preparation, as there is no need to disassemble other components. The lid ensures that the water tank remains sealed during use, preventing dust and impurities from entering the water tank and affecting the accuracy of experimental results. The sealed lid also reduces evaporation of water within the water tank, maintaining a stable water level and avoiding experimental errors caused by evaporation. The lid prevents accidental splashing of water during the experiment, preventing damage to other components within the test chamber.

[0017] Optionally, there are multiple ultraviolet radiation lamps evenly distributed on the top of the inner box.

[0018] Multiple UV lamps provide wider light coverage, ensuring uniform UV exposure across all locations on the specimen surface. Uniform Distribution: The lamps are evenly distributed across the top of the inner chamber, eliminating uneven illumination and ensuring the specimen receives the same UV intensity from all directions. Uniform UV exposure reduces experimental errors caused by uneven illumination and improves the consistency and reliability of experimental results. Simulating a real-world environment: In actual use, asphalt pavement is exposed to UV radiation from various directions, and multiple, evenly distributed lamps more realistically simulate these conditions.

[0019] Optionally, the liquid spray heads are provided in plurality and are evenly distributed on the top of the inner box.

[0020] Multiple liquid nozzles provide a wider spray coverage area, ensuring that all locations on the specimen surface receive uniform moisture. The nozzles are evenly distributed on the top of the inner box to avoid uneven spraying and ensure that the specimen receives the same amount of water in all directions.

[0021] Optionally, the outer box body is provided with a heat dissipation vent.

[0022] The heat dissipation vents can help the heat inside the test chamber dissipate in time to avoid excessive internal temperature caused by long-term operation.

[0023] Beneficial effects

[0024] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0025] In the technical solution provided by the present invention, the test box body includes an outer box body and an inner box body, the inner box body is provided with a rollover door and the rollover door has a double-layer thermal insulation glass layer, and the inner box body is provided with a hollow cavity for placing a test piece; a heating pipe is attached to the outside of the inner box body; a liquid nozzle is located at the top of the inner box body, which is connected to a water tank through a water pipe, and the water pipe is connected to a water pump; an ultraviolet radiation lamp is located at the top of the inner box body; a gas nozzle is connected to the inner box body and is connected to an exhaust gas storage device through an air pipe, and can perform multi-field coupling of high and low temperature, water spraying, exhaust gas injection and ultraviolet radiation, simulate the environmental impact of asphalt pavement during actual use, and provide support for studying the performance decay law of asphalt pavement under multi-field coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the door closing structure of an asphalt mixture specimen environment simulation test box proposed in an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of the door opening structure of an asphalt mixture specimen environment simulation test box proposed in an embodiment of the present utility model;

[0028] Figure 3 A schematic diagram of the back structure of an asphalt mixture specimen environmental simulation test box proposed in an embodiment of the present utility model, from perspective 1;

[0029] Figure 4 A schematic diagram of the back structure of an asphalt mixture specimen environmental simulation test box proposed in an embodiment of the present utility model, from a second perspective;

[0030] Figure 5 This is a schematic diagram of the interior of an asphalt mixture specimen environment simulation test box proposed in an embodiment of the present utility model;

[0031] 1. Test chamber body; 2. Control panel; 201. CNC display screen; 202. Water flow control knob; 203. Main switch; 3. Side-tip door; 4. Double-layer thermal insulation glass layer; 5. Door handle; 6. Bottom inspection door; 7. Drain hole; 8. Hollow cavity; 9. Heat dissipation vent; 10. Water collection port; 11. Water tank; 12. Cover handle; 13. Lid; 14. Water pipe; 15. Liquid nozzle; 16. Heating tube; 17. Ultraviolet radiation lamp; 18. Compressor; 19. Gas nozzle; 20. Exhaust box. DETAILED DESCRIPTION

[0032] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0033] Example

[0034] Combined with attachment Figure 1-5 A test chamber for simulating the environment of asphalt mixture specimens includes a test chamber body 1, a heating tube 16, a liquid nozzle 15, an ultraviolet radiation lamp 17, and a gas nozzle 19. The test chamber is a rectangular parallelepiped as a whole, which can perform multi-field coupling of high and low temperature, water spraying, exhaust gas injection, and ultraviolet radiation on asphalt mixture specimens. It can not only help scientists better understand the impact of different environmental factors on asphalt materials, but also promote the research and development of new materials. The ultimate goal is to improve the durability and safety of roads and reduce maintenance costs.

[0035] The test chamber body 1 comprises an outer body and an inner body. The inner body is provided with a rollover door 3 with a double-layer of insulating glass 4. The inner body is provided with a hollow cavity 8 for placing test specimens. The bottom of the inner body is connected to a water tank 11 via a water collection port 10. The bottom of the water tank 11 is provided with a drain hole 7. The water tank 11 and the exhaust gas tank 20 are located at the bottom of the inner body. A lid 13 is provided on the top of the water tank 11, which is provided with a lid handle 12. The rollover door 3 is provided with a door handle 5. The outer body is provided with a bottom inspection door 6, which faces the water tank 11 and the exhaust gas tank 20 for easy maintenance. The water collection port 10 is connected to the water tank 11 via a pipe. The top of the water tank 11 is provided with a lid 13, a water pipe 14 is provided on the rear side, a drain hole 7 is provided on the front side, and a handle is provided on the lid 13. The other end of the water pipe 14 is connected to the nozzle. The nozzle is positioned within the hollow chamber 8, with the nozzle facing the inner bottom surface of the hollow chamber 8. Water from the water tank 11 flows through the water pipe 14 and the nozzle onto the test piece within the hollow chamber 8, then flows into the water collection port 10 and back into the water tank 11. After the test is complete, the drain hole 7 is opened to allow the water in the water tank 11 to flow out, and the spray solution for the next test is added through the lid 13.

[0036] A control panel 2 is provided outside the outer box, which is connected to the heating tube 16, the water pump, the air pump and the ultraviolet radiation lamp 17. The control panel 2 is provided with a digital control display 201, a water flow control knob 202 and a main switch 203.

[0037] Combined with attachment Figure 3 , the heating tube 16 is attached to the outside of the inner box. The heating tube 16 is evenly distributed on the outside of the inner box in a bow shape. Heating tubes 16 are provided on both sides of the inner box. The heating tube 16 is connected to the compressor 18. The compressor 18 can quickly provide the required heat, quickly increase the temperature in the test chamber through the heating tube 16, and shorten the time to reach the set temperature. The combination of the compressor 18 and the heating tube 16 can achieve more precise temperature control. By adjusting the working state of the compressor 18, the output power of the heating tube 16 can be accurately controlled to keep the temperature in the test chamber constant.

[0038] The liquid spray head 15 is located at the top of the inner box body and is connected to the water tank 11 through a water pipe 14 , which is connected to a water pump.

[0039] The ultraviolet radiation lamp 17 is located at the top of the inner box.

[0040] The gas nozzle 19 is connected to the inner box and is connected to the tail gas storage device through the air pipe 21. The tail gas storage device is the tail gas box 20. The gas nozzle 19 is located on the side wall of the hollow cavity 8, and the air pipe 21 is provided with an air pump.

[0041] There are multiple ultraviolet radiation lamps 17 evenly distributed on the top of the inner box. In this embodiment, there are three ultraviolet radiation lamps 17 and they are arranged in parallel. The ultraviolet radiation lamps 17 are connected to batteries for power supply.

[0042] Multiple liquid spray heads 15 are evenly distributed across the top of the inner box. In this embodiment, two liquid spray heads 15 are located between the UV radiation lamps 17. The nozzles of the liquid spray heads 15 feature a dense, multi-porous structure. This dense, multi-porous structure produces multiple, fine spray points, ensuring that the spray water is evenly distributed across the entire surface of the specimen. The multi-porous nozzles cover a larger area, reducing blind spots and ensuring that all parts of the specimen receive even water.

[0043] The outer box body is provided with a heat dissipation port 9. A fence structure is provided inside the heat dissipation port 9, which can effectively prevent dust, debris and other foreign matter from entering the interior of the test box, thereby preventing these foreign matter from damaging the internal electronic components and mechanical parts.

[0044] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An asphalt mixture specimen environmental simulation test box, characterized in that: include The test box body includes an outer box body and an inner box body, the inner box body is provided with a rollover door with a double-layer thermal insulation glass layer, and the inner box body is provided with a hollow cavity for placing the test piece; A heating pipe is attached to the outer side of the inner box; a liquid spray head, located at the top of the inner box body, connected to the water tank via a water pipe, wherein the water pipe is connected to a water pump; an ultraviolet radiation lamp tube, located on the top of the inner box; The gas nozzle is connected to the inner box and is connected to the tail gas storage device through an air pipe.

2. The asphalt mixture specimen environmental simulation test box according to claim 1, characterized in that: The heating tubes are evenly distributed on the outside of the inner box in a bow shape.

3. The asphalt mixture specimen environmental simulation test box according to claim 2, characterized in that: The heating pipes are provided on both sides of the inner box.

4. The asphalt mixture specimen environmental simulation test box according to claim 1, characterized in that: The bottom of the inner box body is connected to a water tank through a water collecting port, and a drainage hole is provided at the bottom of the water tank.

5. The asphalt mixture specimen environmental simulation test box according to claim 4, characterized in that: A cover is provided on the top of the water tank, and the cover is provided with a cover handle.

6. The asphalt mixture specimen environmental simulation test box according to claim 1, characterized in that: There are multiple ultraviolet radiation lamps evenly distributed on the top of the inner box.

7. The asphalt mixture specimen environmental simulation test box according to claim 1, characterized in that: The liquid spray heads are provided in plurality and are evenly distributed on the top of the inner box.

8. The asphalt mixture specimen environmental simulation test box according to claim 1, characterized in that: The outer box body is provided with a heat dissipation opening.

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