An aging performance testing device for warm-mix recycled asphalt

Abstract

This utility model discloses a testing device for the aging performance of warm-mix recycled asphalt in the field of asphalt aging detection technology. It includes a pretreatment chamber, a transfer chamber, and a main aging chamber, which are connected sequentially. An internal robotic arm is installed, allowing for manual control of the asphalt sample handling and transfer. The device can also adjust different parameters through the pretreatment and main aging chambers, enabling it to detect asphalt aging data based on single parameter changes or to couple changes of multiple parameters to detect the asphalt aging effect. This device provides diverse detection data with higher simulation accuracy. Furthermore, the entire testing process does not require manual operation and prevents harmful substances from escaping from the equipment, effectively protecting the safety of testing personnel.

Description

Technical Field

[0001] This utility model relates to the field of asphalt aging detection technology, and in particular to an aging performance testing device for warm-mix recycled asphalt. Background Technology

[0002] The quality of asphalt needs to be tested, and various parameters need to be tested, among which aging test is very important.

[0003] Traditional asphalt aging test chambers, such as rotating film ovens, can only simulate a short-term 75-minute aging operation at 163℃ during the high-temperature construction phase. They cannot reproduce the complex aging process of warm-mix recycled asphalt in low-temperature (100-130℃) conditions during construction and long-term service. Warm-mix recycled asphalt also experiences a series of complex conditions such as ultraviolet radiation, ozone pollution, and humidity changes. Furthermore, it repeatedly undergoes temperature changes, ultraviolet radiation, and ozone processes, and the asphalt also undergoes a natural aging state due to the coupling of these various factors.

[0004] The current requirement is to conduct aging tests on these warm-mix recycled asphalts made from various materials to simulate their performance after aging, thereby determining the quality of the asphalt.

[0005] Based on this, this utility model designs an aging performance testing device for warm-mix recycled asphalt to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an aging performance testing device for warm-mix recycled asphalt. This device can adjust the changes of different parameters in the pretreatment chamber and the main aging chamber, enabling it to detect asphalt aging data by changing a single parameter or by coupling changes of multiple different parameters to detect the asphalt aging effect. The device provides diverse test data with higher simulation accuracy, and the entire testing process does not require manual operation by personnel. It also prevents harmful substances inside the testing equipment from escaping to the outside, effectively protecting the safety of testing personnel.

[0007] This invention is achieved as follows: an aging performance testing device for warm-mix recycled asphalt, comprising:

[0008] Pre-treatment compartment, transfer compartment, main aging compartment, controller and pallet;

[0009] The pretreatment chamber, transfer chamber, and main aging chamber are all hollow, enclosed compartments, and together they form a complete machine body.

[0010] The transfer chamber is equipped with a robotic arm. The pretreatment chamber, the transfer chamber and the main aging chamber are separated by a partition. Each of the transfer chamber, the pretreatment chamber and the main aging chamber has a connecting hole that is interconnected. The connecting holes are also covered with baffles that can be flipped open to block the connecting holes.

[0011] The tray is a downward-recessed storage tray, and multiple drainage holes are evenly distributed along the bottom edge of the tray. The tray is installed in both the pretreatment chamber and the main aging chamber.

[0012] The front of the pretreatment compartment is provided with a front door. The interior of the pretreatment compartment is provided with a heating tube, a temperature control sensor and a humidity sensor. The heating tube is a ring-shaped electric heating tube, which is arranged around the top of the tray.

[0013] The temperature sensor and humidity sensor are mounted on the outside of the tray without contact.

[0014] A heat exchange fan is also installed on the top of the pretreatment chamber, with one opening of the heat exchange fan located at the top of the pretreatment chamber cavity; the other opening of the heat exchange fan is connected to the cavity of the main aging chamber.

[0015] The main aging chamber has a main door on its front, and the interior of the main aging chamber is also equipped with multiple ultraviolet lamps and an ozone generator.

[0016] An ozone decomposer is also installed on the top of the main aging chamber, and the interior of the main aging chamber is connected to the external environment through the ozone decomposer.

[0017] Temperature sensors are installed at the top of the inner cavities of the pretreatment chamber and the main aging chamber, and the temperature sensors are located at the opening of the heat exchange fan.

[0018] The machine body is also equipped with a controller, and the heating tube, temperature sensor, humidity sensor, robotic arm, ozone generator, ultraviolet lamp, ozone decomposer, heat exchange fan and two air temperature sensors are all connected to the controller.

[0019] Furthermore, the front hatch is a closed, insulated door;

[0020] The main cabin door is a sealed door made of double-layered leaded glass.

[0021] Furthermore, the temperature sensor and humidity sensor are positioned at the same height as the tray.

[0022] Furthermore, the heat exchange fan is a bidirectional fan.

[0023] Furthermore, a rotating shaft is provided at the top of the baffle, and the two baffles are respectively installed inside the pretreatment chamber and the main aging chamber. The baffles are opened to the outside of both sides of the transfer chamber by rotating the shaft.

[0024] The baffle is a flexible silicone curtain.

[0025] Furthermore, a warning light is also installed on the ozone decomposer.

[0026] Furthermore, a water receiving tray is stably installed at the bottom of the inner cavity of both the pretreatment chamber and the main aging chamber.

[0027] The water receiving tray has an opening at the top, and a mesh plate is stably installed inside the opening, with the mesh plate flush with the top of the water receiving tray.

[0028] The tray is a circular storage tray, and four straight rod-shaped legs are evenly arranged on the bottom of the tray;

[0029] The tray is stably mounted on top of the mesh panel using legs.

[0030] The beneficial effects of this utility model are: 1. Dual-stage aging simulation: Through the series design of the pretreatment chamber and the main aging chamber, the full life cycle simulation of warm-mix recycled asphalt is realized, from construction thermo-oxidative aging to service ultraviolet and ozone aging. Furthermore, the asphalt sample is not exposed to the outside of the testing environment throughout the entire process, ensuring that the environment is basically within the set parameters, effectively improving the reliability of the test data.

[0031] 2. Precise control of multiple factors: This device can simultaneously control parameters such as temperature, ultraviolet irradiation, ozone concentration, and gas flow rate, and set these detections in the same detection equipment. Each parameter can be adjusted independently, enabling single-factor sensitivity analysis and orthogonal coupling experiments with multiple different parameters.

[0032] 3. Adaptability to warm mix process: The temperature control limit of the pretreatment chamber reaches 80℃, covering the entire construction temperature range of warm mix asphalt. Compared with traditional testing methods, the hot air circulation rate is greatly reduced, which is closer to the low-oxygen aging characteristics of the warm mix process, and the test data is more realistic and accurate.

[0033] 4. An ozone decomposer has been added, which increases the ozone decomposition efficiency, effectively improving environmental protection and safety. The ultraviolet leakage also meets the standards, eliminating the need for personnel evacuation protection during testing and meeting the laboratory's safe operation requirements.

[0034] 5. A water tray has also been added to collect water for humidifying the aging environment. This humidification method can be preset; simply add a fixed volume of water. It is easy to operate and requires no additional equipment. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0037] Figure 2 This is a top view of the overall internal structure of the body of this utility model;

[0038] Figure 3 This is a schematic diagram of the tray structure of this utility model;

[0039] Figure 4 This is a schematic diagram showing the relationship between the baffle and the connecting hole of this utility model;

[0040] Figure 5 This is a schematic diagram of the structure of the baffle of this utility model in the open state on the connecting hole.

[0041] The attached diagram lists the components represented by each number as follows:

[0042] 1-Pretreatment chamber, 11-Heating tube, 12-Temperature sensor, 13-Humidity sensor, 14-Front door, 2-Transfer chamber, 21-Robotic arm, 22-Baffle, 23-Connection hole, 24-Rotating shaft, 3-Main aging chamber, 31-Ozone generator, 32-Ultraviolet lamp, 33-Ozone decomposer, 34-Main door, 4-Controller, 41-Heat exchange fan, 42-Heat exchange duct, 43-Air temperature sensor, 5-Tray, 51-Wire mesh, 52-Water tray, 53-Drain hole, 54-Legs. Detailed Implementation

[0043] Please see Figures 1 to 5 As shown, this utility model provides an aging performance testing device for warm-mix recycled asphalt. To better understand the above technical solution, the following will provide a detailed description of the above technical solution in conjunction with the accompanying drawings and specific embodiments.

[0044] In a specific embodiment of the technical solution of this utility model:

[0045] Includes pretreatment compartment 1, transfer compartment 2, main aging compartment 3, controller 4, and pallet 5;

[0046] The pretreatment compartment 1, the transfer compartment 2, and the main aging compartment 3 are all hollow, enclosed compartments, and together they form a complete machine body.

[0047] A robotic arm 21 is installed inside the transfer chamber 2. The pretreatment chamber 1, the transfer chamber 2 and the main aging chamber 3 are sealed and isolated by partitions. Each of the transfer chamber 2 and the pretreatment chamber 1 and the main aging chamber 3 has a connecting hole 23 that is interconnected. The connecting hole 23 is also covered with a baffle 22. The baffle 22 can be flipped open and blocks the connecting hole 23. A rotating shaft 24 is installed on the top of the baffle 22. The two baffles 22 are respectively installed inside the pretreatment chamber 1 and the main aging chamber 3. The baffles 22 are flipped open to the outside of the transfer chamber 2 on both sides through the rotating shaft 24.

[0048] The baffle 22 is made of flexible silicone fabric. When the robotic arm 21 extends, the baffle 22 is pushed outward and supported by the straight rod of the extension section of the robotic arm 21. After the robotic arm 21 retracts, the flexible fabric baffle 22 will rotate under the constraint of the pivot 24 due to gravity, closing the connection hole 23. Moreover, the flexible fabric will not affect the extension and retraction of the robotic arm 21 and will always remain naturally hanging down. At the same time, the baffle 22 is made of a rubber material, which gives it a certain degree of toughness and hardness, preventing it from being pulled into a ball and keeping it in an unfolded state. The thickness of the baffle 22 needs to be 2-5mm to ensure that it does not wrinkle.

[0049] A water receiving tray 52 is stably installed at the bottom of the inner cavity of both the pretreatment chamber 1 and the main aging chamber 3.

[0050] The water receiving tray 52 has an opening at the top, and a mesh plate 51 is stably fitted inside the opening. The mesh plate 51 is stably fitted to the opening at the top of the water receiving tray 52 by means of dimensional constraints. As long as it is stably fitted and will not move in the horizontal direction, it is acceptable. The structure is the same as that of the tea water filter tray. The mesh plate 51 is flush with the top of the water receiving tray 52.

[0051] The tray 5 is a round storage tray, and four straight rod-shaped legs 54 are evenly arranged on the bottom of the tray 5;

[0052] The tray 5 is stably mounted on top of the wire mesh 51 via the legs 54;

[0053] The legs 54 and the mesh plate 51 can be fixed by bolts or welding.

[0054] The tray 5 is a tray with a downward-facing top, used to hold the sample. Multiple drainage holes 53 are evenly opened on the bottom edge of the tray 5. The drainage holes 53 penetrate the bottom of the tray 5. The tray 5 is installed in both the pretreatment chamber 1 and the main aging chamber 3.

[0055] The front of the pretreatment compartment 1 is provided with a front door 14. The front door 14 is a closed insulated door, which can also be made of high-temperature resistant double-layer heat-insulating glass or other materials, but it must be made of high-temperature resistant materials and ensure that it is sealed.

[0056] The pretreatment chamber 1 is equipped with a heating tube 11, a temperature control sensor 12, and a humidity sensor 13. The heating tube 11 is a ring-shaped electric heating tube, which is arranged around the tray 5 directly above it. The temperature control sensor 12 and the humidity sensor 13 are set at the same height as the tray 5 to detect the temperature of the asphalt sample.

[0057] The temperature sensor 12 and humidity sensor 13 are positioned outside the tray 5 without contact.

[0058] A heat exchange fan 41 is also installed on the top of the pretreatment chamber 1. The heat exchange fan 41 is a bidirectional fan, which facilitates the replacement of the air inside the pretreatment chamber 1 and the main aging chamber 3 when needed. The main purpose is to evenly distribute ozone and high temperature, so that the main aging chamber 3 can also get high temperature, and the pretreatment chamber 1 can also get ozone.

[0059] Because the baffle 22 is normally closed, and the two baffles 22 open in opposite directions, both opening towards the outside of the transfer chamber 2, the two baffles 22 form a one-way valve principle, which has a certain isolation effect. This can prevent a large amount of air from flowing between the pretreatment chamber 1 and the main aging chamber 3. The test needs to be carried out for a long time, and a small leakage will not affect the overall test data. This makes the transfer chamber 2 form an isolated chamber. Therefore, sometimes in order to couple multiple different environmental factors, it is necessary to transport the air between the pretreatment chamber 1 and the main aging chamber 3 in both directions through the heat exchange fan 41.

[0060] One opening of the heat exchanger 41 is located at the top of the inner cavity of the pretreatment chamber 1; another opening of the heat exchanger 41 is connected to the inner cavity of the main aging chamber 3; and a third opening of the heat exchanger 41 is connected to the outside of the machine body. This third opening needs to be equipped with a one-way valve to prevent harmful ozone in the internal air from escaping into the external environment.

[0061] The main aging chamber 3 has a main door 34 on its front, which is a sealed door made of double-layered leaded glass.

[0062] The main aging chamber 3 is also equipped with multiple ultraviolet lamps 32 and an ozone generator 31.

[0063] An ozone decomposer 33 is also installed on the top of the main aging chamber 3, and the inner cavity of the main aging chamber 3 is connected to the external environment through the ozone decomposer 33; a warning light is also installed on the ozone decomposer 33.

[0064] Temperature sensors 43 are installed at the top of the inner cavity of both the pretreatment chamber 1 and the main aging chamber 3. They are used to accurately detect the outlet temperature of the heat exchange fan 41. The temperature sensors 43 are located at the opening of the heat exchange fan 41.

[0065] The machine body is also equipped with a controller 4, a heating tube 11, a temperature control sensor 12, a humidity sensor 13, a robotic arm 21, an ozone generator 31, a UV lamp 32, an ozone decomposer 33, a heat exchange fan 41, and two air temperature sensors 43, all of which are connected to the controller 4.

[0066] It should be noted that:

[0067] 1. This device can integrate and simulate multiple parameters, and then detect asphalt aging data, such as studying the rule that "the ozone aging rate decreases by 15-20% for every 10℃ decrease in temperature", making the detection method more flexible and realistic, and also quickly understanding the aging changes caused by changes in a single parameter under different environments.

[0068] 2. This device can also transfer asphalt samples between the pretreatment chamber 1 and the main aging chamber 3 at regular intervals or intermittently. The transfer is automated and controlled by the robotic arm 21, which is convenient to operate. When frequent sample transfer is required, the baffle 22 can be directly removed to facilitate sample transfer. The function of the baffle 22 is only to isolate ozone.

[0069] 3. The detection method of this device can be either installed with baffle 22 to achieve single parameter change detection, or with baffle 22 removed, hot air can be blown by heat exchange fan 41 to simultaneously carry out high temperature, variable temperature, ultraviolet and ozone multi-factor coupling in the main aging chamber 3, to achieve aging treatment under simulation and extreme working conditions. The operation is flexible and the detection is convenient.

[0070] When using this utility model, the entire equipment is closed, the front door 14 and the main door 34 are opened, the asphalt sample is placed on the tray 5 in the required compartment, and then all compartments are closed to keep the pretreatment compartment 1, transfer compartment 2 and main aging compartment 3 sealed.

[0071] Turn on the equipment and adjust the heating tube 11 to generate heat through the controller 4 so that the pretreatment chamber 1 reaches the set temperature. The temperature control sensor 12 and humidity sensor 13 detect the temperature and humidity. When the temperature is not suitable, control the heating tube 11 to adjust to the appropriate power to achieve the appropriate temperature.

[0072] When the humidity is not suitable, the fan can be turned on to draw the atomized water vapor from the outside into the pretreatment chamber 1. Alternatively, the front door 14 can be opened to pour an appropriate amount of water directly onto the tray 5. The water vapor will condense into water droplets during the high and low temperature changes, which will extend through the drain hole 53 and drip down, flowing into the water receiving tray 52 through the mesh plate 51, thus preventing the interior of the chamber from getting wet.

[0073] During the same main aging chamber 3 test, the controller 4 turns on the ultraviolet lamp 32 and the ozone generator 31 to start testing the asphalt samples on the tray 5 inside the main aging chamber 3. The samples are all granular.

[0074] The above methods are all single-factor variable detection. However, when multi-factor mixed detection is required, the heat exchange fan 41 is turned on to send the high-temperature and high-humidity air in the pretreatment chamber 1 into the main aging chamber 3. This allows the main aging chamber 3 to be simultaneously subjected to temperature, humidity, ultraviolet radiation, and ozone erosion, achieving a multi-factor coupled aging effect. This puts the asphalt under extreme testing, making the simulation more realistic.

[0075] Furthermore, during the asphalt testing process, after undergoing aging treatment in the pretreatment chamber 1, the asphalt sample in the pretreatment chamber 1 can be picked up and transferred to the main aging chamber 3 by the robotic arm 21. The robotic arm 21 can also reverse the transport of the asphalt sample, making the entire testing process more flexible and diverse, with more testing methods and parameter variables. That is, instead of performing aging treatment in the set order, the steps are reversed to achieve different aging effects, so as to verify whether the data are different, making the operation more realistic.

[0076] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An aging performance testing device for warm-mix recycled asphalt, characterized in that, include: The pretreatment compartment (1), the transfer compartment (2), the main aging compartment (3), the controller (4), and the pallet (5) are all included. The pretreatment chamber (1), the transfer chamber (2) and the main aging chamber (3) are all hollow, enclosed chambers, and the pretreatment chamber (1), the transfer chamber (2) and the main aging chamber (3) together form a complete machine body; The transfer chamber (2) is equipped with a robotic arm (21). The pretreatment chamber (1), the transfer chamber (2) and the main aging chamber (3) are separated by a partition. The transfer chamber (2) is connected to the pretreatment chamber (1) and the main aging chamber (3) by a connecting hole (23). The connecting hole (23) is also covered with a baffle (22). The baffle (22) can be flipped open to block the connecting hole (23). The tray (5) is a tray with a downward-facing top. Multiple drainage holes (53) are evenly opened on the bottom edge of the tray (5). The tray (5) is installed in both the pretreatment chamber (1) and the main aging chamber (3). The front door (14) is provided on the front of the pretreatment chamber (1). The heating tube (11), temperature sensor (12) and humidity sensor (13) are provided inside the pretreatment chamber (1). The heating tube (11) is an annular electric heating tube and is arranged around the tray (5) directly above it. The temperature sensor (12) and humidity sensor (13) are disposed outside the tray (5) without contact; A heat exchange fan (41) is also provided on the top of the pretreatment chamber (1). One opening of the heat exchange fan (41) is located on the top of the inner cavity of the pretreatment chamber (1); the other opening of the heat exchange fan (41) is connected to the inner cavity of the main aging chamber (3). The main aging chamber (3) has a main door (34) on its front. The main aging chamber (3) is also equipped with multiple ultraviolet lamps (32) and an ozone generator (31). An ozone decomposer (33) is also installed on the top of the main aging chamber (3), and the inner cavity of the main aging chamber (3) is connected to the external environment through the ozone decomposer (33). A wind temperature sensor (43) is installed at the top of the inner cavity of both the pretreatment chamber (1) and the main aging chamber (3), and the wind temperature sensor (43) is installed at the opening of the heat exchange fan (41). The machine body is also equipped with a controller (4), and the heating tube (11), temperature sensor (12), humidity sensor (13), robotic arm (21), ozone generator (31), ultraviolet lamp (32), ozone decomposer (33), heat exchange fan (41) and two wind temperature sensors (43) are all connected to the controller (4).

2. The aging performance testing device for warm-mix recycled asphalt according to claim 1, characterized in that: The front cabin door (14) is a closed, insulated door; The main cabin door (34) is a sealed door made of double-layered leaded glass.

3. The aging performance testing device for warm-mix recycled asphalt according to claim 1, characterized in that: The temperature sensor (12) and humidity sensor (13) are positioned at the same height as the tray (5).

4. The aging performance testing device for warm-mix recycled asphalt according to claim 1, characterized in that: The heat exchange fan (41) is a bidirectional fan.

5. The aging performance testing device for warm-mix recycled asphalt according to claim 1, characterized in that: The top of the baffle (22) is provided with a rotating shaft (24). The two baffles (22) are respectively located inside the pretreatment chamber (1) and the main aging chamber (3). The baffles (22) are opened to the outside of the transfer chamber (2) on both sides through the rotating shaft (24). The baffle (22) is a flexible silicone curtain.

6. The aging performance testing device for warm-mix recycled asphalt according to claim 1, characterized in that: The ozone decomposer (33) is also equipped with a warning light.

7. The aging performance testing device for warm-mix recycled asphalt according to claim 1, characterized in that: A water receiving tray (52) is stably installed at the bottom of the inner cavity of both the pretreatment chamber (1) and the main aging chamber (3); The water receiving tray (52) has an opening at the top, and a mesh plate (51) is stably installed inside the opening at the top of the water receiving tray (52). The mesh plate (51) is flush with the top of the water receiving tray (52). The tray (5) is a circular tray, and four straight rod-shaped legs (54) are evenly arranged on the bottom of the tray (5); The tray (5) is stably mounted on top of the mesh plate (51) by means of a foot bracket (54).

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