Device for asphalt aging detection

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a device for asphalt aging detection. Comprising an asphalt detection sampling barrel, heating equipment used for heating asphalt in the asphalt detection sampling barrel and stirring equipment used for stirring the asphalt in the asphalt detection sampling barrel in the heating process, the heating equipment comprises a base, and an encircling heating assembly is arranged on the base; a rotation driving assembly used for driving the surrounding heating assembly to rotate is arranged in the base, the surrounding heating assembly comprises a surrounding cylinder with an opening in the top and a through interior, the bottom of the surrounding cylinder abuts against the top of the base, and a bottom heating disc is connected to the bottom in the surrounding cylinder; according to the asphalt aging detection device, the heating efficiency and the heating uniformity of an asphalt sample are remarkably improved, the problems of precipitation and layering of the asphalt sample are solved, and the accuracy of asphalt aging detection is improved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a device for detecting asphalt aging. Background Technology

[0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a type of high-viscosity organic liquid that exists in a liquid or semi-solid state.

[0003] During long-term use, asphalt undergoes a series of physical and chemical changes due to environmental factors such as temperature, sunlight, and oxygen, leading to a gradual deterioration of its properties. Aging testing can simulate the impact of these environmental factors on asphalt, thereby assessing the durability of asphalt materials over long-term use. Asphalt aging is a gradual process, and its rate directly affects the service life of the pavement. Aging testing allows us to understand the performance changes of asphalt at different stages, thus predicting the service life of the pavement and providing a scientific basis for road planning and maintenance.

[0004] During the asphalt aging test, the asphalt sample needs to be heated by a heating device, then the heated asphalt sample is molded, left at room temperature for 1.5 hours, scraped off, and placed in a specified water temperature for 1.5 hours before a tensile test is conducted. The tensile test can be used to evaluate the changes in the strength, toughness, and other indicators of the asphalt material after aging.

[0005] In asphalt aging testing, heating involves first placing the asphalt in a heating cylinder and heating it to melt it through a bottom heating plate. The asphalt is then filtered through a sieve and placed in a rotating thin-film oven for aging testing. In the initial stage, heating is performed using a placement cylinder and a bottom heating plate, but the heating efficiency is poor. Furthermore, the lack of stirring during the heating process can easily lead to sedimentation and stratification, affecting subsequent filtration and aging in the rotating thin-film oven. Utility Model Content

[0006] The purpose of this invention is to provide a device for detecting asphalt aging, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device for asphalt aging detection, comprising an asphalt sampling cylinder, a heating device for heating the asphalt inside the asphalt sampling cylinder, and a stirring device for stirring the asphalt inside the asphalt sampling cylinder during the heating process. The heating device includes a base, an encircling heating component is disposed on the base, and a rotation driving component for rotating the encircling heating component is disposed inside the base.

[0008] As a preferred embodiment of this utility model, the mixing device includes a mixing drive assembly and a mixing assembly. The mixing assembly includes a mixing shaft, and mixing blades are connected and disposed on the outer circumferential wall below the mixing shaft. The mixing shaft is inclinedly disposed inside the asphalt testing and sampling cylinder, and a connecting crossbar connected to the mixing drive assembly is disposed on the top of the mixing shaft.

[0009] As a preferred embodiment of this utility model, the stirring drive assembly includes a stirring drive motor, the connecting crossbar is perpendicular to the stirring drive motor, and the bottom output end of the stirring drive motor is connected to the connecting crossbar.

[0010] As a preferred embodiment of this utility model, the circumferential heating assembly includes a circumferential cylinder with a top opening that extends through the interior. The bottom of the circumferential cylinder abuts against the top of the base. A bottom heating plate is connected to the bottom of the circumferential cylinder. Circumferential heating rings are uniformly arranged on the inner circumferential wall of the circumferential cylinder for circumferential heating of the outer circumference of the asphalt testing sampling cylinder. The bottom heating plate and the circumferential heating rings are connected to a power supply mechanism via wires.

[0011] As a preferred embodiment of this utility model, the rotary drive assembly includes a drive motor, and the top output end of the drive motor is connected to the bottom of the circumferential cylinder directly below it.

[0012] As a preferred embodiment of this utility model, a support rod is connected to the top of the base outside the circumferential cylinder to support the lower part of the outer circumferential wall of the top of the asphalt testing sampling cylinder.

[0013] As a preferred embodiment of this utility model, when the asphalt testing sampling tube is placed inside the circumferential tube, the top of the support rod is connected to the bottom of the asphalt testing sampling tube, and the outer wall of the asphalt testing sampling tube abuts against the bottom heating plate and the circumferential heating ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In view of the problems mentioned in the background art, the design of this utility model significantly improves the heating efficiency and the heating uniformity of the asphalt sample. At the same time, the stirring function solves the problems of sedimentation and stratification that may occur in the asphalt sample during the heating process. These improvements help to improve the accuracy and reliability of asphalt aging detection.

[0016] 2. The bottom heating plate and the circumferential heating ring at the bottom of the inner wall of the circumferential cylinder provide circumferential heating to the asphalt testing sampling cylinder, and rotate while heating. This ensures that all parts of the asphalt sample receive uniform heat, avoiding local overheating or insufficient heating. This is crucial for ensuring the accuracy of asphalt aging testing, as uniform heating can more accurately simulate the aging of asphalt during actual use.

[0017] 3. Rotary heating can distribute heat more effectively and is generally more efficient than stationary heating. In the same amount of time, rotary heating can heat the asphalt sample to the required state more quickly.

[0018] 4. The mixing process further enhances the heating and melting effect of asphalt, more accurately simulating the aging process of asphalt in actual use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the overall structure of this utility model.

[0020] Figure 2 This is a side view of the mixing device of this utility model.

[0021] Figure 3 This is a schematic diagram of the mixing equipment of this utility model.

[0022] Figure 4 This is a schematic diagram of the internal structure of the circumferential tube of this utility model.

[0023] In the diagram: 1. Asphalt testing sampling cylinder; 2. Heating equipment; 21. Base; 22. Circumferential heating assembly; 221. Circumferential cylinder; 222. Bottom heating plate; 223. Circumferential wall heating ring; 224. Support rod; 23. Rotary drive assembly; 3. Mixing equipment; 31. Mixing drive assembly; 311. Mixing drive motor; 32. Mixing assembly; 321. Mixing shaft; 322. Mixing blades; 323. Connecting crossbar. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive. Example

[0025] The heating equipment in this application is controlled by a controller. The controller circuit can be easily programmed by those skilled in the art and is common knowledge in the field, so it will not be explained in detail here.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a device for asphalt aging detection, including an asphalt sampling cylinder 1, a heating device 2 for heating the asphalt inside the asphalt sampling cylinder 1, and a stirring device 3 for stirring the asphalt inside the asphalt sampling cylinder 1 during the heating process. The heating device 2 includes a base 21, a ring heating component 22 is provided on the base 21, and a rotary drive component 23 for rotating the ring heating component 22 is provided inside the base 21. The stirring device 3 includes a stirring drive component 31 and a stirring component 32. The stirring component 32 includes a stirring shaft 321, stirring blades 322 are connected to the outer circumferential wall below the stirring shaft 321, the stirring shaft 321 is inclined inside the asphalt sampling cylinder 1, and a connecting crossbar 323 connected to the stirring drive component 31 is provided at the top of the stirring shaft 321. The stirring drive component 31 includes a stirring drive motor 311, the connecting crossbar 323 is perpendicular to the stirring drive motor 311, and the bottom output end of the stirring drive motor 311 is connected to the connecting crossbar 323.

[0027] It should be noted that in this embodiment, the device includes an asphalt testing sampling cylinder 1, a heating device 2, and a stirring device 3. The circumferential heating component 22 in the heating device 2 heats the asphalt sample in a circumferential manner, while the rotation drive component 23 makes the circumferential heating component 22 rotate to ensure that the asphalt sample is heated evenly. The stirring device 3 stirs the asphalt during the heating process to prevent it from settling and separating.

[0028] During the heating process, when the stirring device 3 needs to be stirred, the stirring shaft 321 of the stirring device 3 located on one side of the heating device 2 is placed inside the asphalt testing sampling cylinder 1 at the top of the heating device 2. At this time, the controller starts the stirring drive motor 311 to work. The stirring drive motor 311 drives the stirring shaft 321 to rotate, and the stirring blades 322 rotate accordingly to stir the asphalt sample. The design of the stirring blades 322 enables them to effectively mix the asphalt sample during rotation, preventing it from settling and separating. After heating is completed, the heating device 2 and the stirring device 3 are stopped, and the asphalt sample is taken out for subsequent filtration and rotary film oven aging tests.

[0029] Furthermore, the mixing device 3 stirs the asphalt during the heating process, effectively solving the problems of sedimentation and stratification that may occur in the asphalt sample, improving the accuracy and reliability of aging detection. The device has a simple structure, is easy to operate, has low cost, is compact and convenient, and can be disassembled and carried. It is suitable for indoor or outdoor measurements, ensuring that the test results are not affected by the weather environment, and the test results have high repeatability and good stability.

[0030] Please see Figure 1 and4 The circumferential heating assembly 22 includes a circumferential cylinder 221 with a top opening that extends through the interior. The bottom of the circumferential cylinder 221 abuts against the top of the base 21. A bottom heating plate 222 is connected to the bottom of the circumferential cylinder 221. Circumferential heating rings 223 are evenly arranged on the inner circumferential wall of the circumferential cylinder 221 for circumferential heating of the outer circumference of the asphalt testing sampling cylinder 1. The bottom heating plate 222 and the circumferential heating rings 223 are connected to a power supply mechanism via wires. The rotary drive assembly 23 includes a drive... The motor drives the output end of the motor to be connected to the bottom of the circumferential cylinder 221. A support rod 224 is connected to the top of the base 21 outside the circumferential cylinder 221 to support the bottom of the outer circumferential wall of the asphalt testing sampling cylinder 1. When the asphalt testing sampling cylinder 1 is placed inside the circumferential cylinder 221, the top of the support rod 224 is connected to the bottom of the asphalt testing sampling cylinder 1, and the outer wall of the asphalt testing sampling cylinder 1 abuts against the bottom heating plate 222 and the circumferential heating ring 223.

[0031] It should be noted that, in this embodiment, the circumferential heating assembly 22 includes a circumferential cylinder 221 with a top opening that extends through the interior, the bottom of which abuts against the top of the base 21. A bottom heating plate 222 is connected to the bottom of the circumferential cylinder 221, and circumferential heating rings 223 are evenly arranged on the circumferential wall for circumferential heating of the outer circumference of the asphalt testing sampling cylinder 1. These heating elements are connected to the power supply mechanism through wires to ensure the stability and uniformity of the heating process. The rotation drive assembly 23 is located inside the base 21 and includes a drive motor, the top output end of which is connected to the circumferential cylinder. The bottom is directly connected to provide rotational power for the circumferential cylinder 221. Outside the circumferential cylinder 221, the top of the base 21 is also connected to a support rod 224, which is used to support the bottom of the outer circumferential wall of the top of the asphalt testing sampling cylinder 1. When the asphalt testing sampling cylinder 1 is placed inside the circumferential cylinder 221, the top of the support rod 224 is connected to the bottom of the top of the asphalt testing sampling cylinder 1, ensuring the stability of the asphalt testing sampling cylinder. At the same time, the outer wall of the asphalt testing sampling cylinder 1 abuts against the bottom heating plate 222 and the circumferential wall heating ring 223, making the heating more uniform and efficient.

[0032] The asphalt sample is placed inside the asphalt testing sampling cylinder 1, which is then positioned within the circumferential cylinder 221. Support rod 224 provides support below the outer circumferential wall at the top of the asphalt testing sampling cylinder 1. The heating and drive motors are then activated to heat and rotate the asphalt, thus stirring it. After heating is complete, the asphalt sample is removed for subsequent testing.

[0033] Furthermore, the heating efficiency and heat uniformity are improved. The combination of the circumferential heating component 22 and the rotary drive component 23 ensures that all parts of the asphalt sample receive uniform heat, avoiding local overheating or insufficient heating. This is crucial for accurately simulating the aging of asphalt in actual use and solves the problems of sedimentation and stratification. The stirring device 3 stirs the asphalt during the heating process, effectively solving the sedimentation and stratification problems that may occur in the asphalt sample, further improving the accuracy and reliability of aging detection.

[0034] The device has a simple structure, is easy to operate, has a low cost, is compact and convenient, and can be disassembled and carried. It is suitable for indoor or outdoor measurements, ensuring that the test results are not affected by weather conditions, and the test results have high repeatability and good stability.

[0035] The working process of this utility model:

[0036] In use, the asphalt sample is placed inside the asphalt testing sampling cylinder 1 and placed inside the circumferential cylinder 221. The support rod 224 is used to support the lower part of the outer circumferential wall at the top of the asphalt testing sampling cylinder 1. Then, the heating and drive motor are started to heat and rotate the asphalt and stir it. After heating is completed, the asphalt sample is taken out for subsequent testing.

[0037] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An apparatus for asphalt aging detection, comprising an asphalt sampling cylinder (1), a heating device (2) for heating the asphalt inside the asphalt sampling cylinder (1), and a stirring device (3) for stirring the asphalt inside the asphalt sampling cylinder (1) during the heating process, characterized in that: The heating device (2) includes a base (21), on which a ring heating component (22) is provided, and a rotation drive component (23) for rotating the ring heating component (22) is provided inside the base (21).

2. The device for detecting asphalt aging according to claim 1, characterized in that: The mixing device (3) includes a mixing drive assembly (31) and a mixing assembly (32). The mixing assembly (32) includes a mixing shaft (321). A mixing blade (322) is connected to the outer circumferential wall below the mixing shaft (321). The mixing shaft (321) is inclined and located inside the asphalt testing sampling cylinder (1). A connecting crossbar (323) connected to the mixing drive assembly (31) is provided at the top of the mixing shaft (321).

3. The device for detecting asphalt aging according to claim 2, characterized in that: The stirring drive assembly (31) includes a stirring drive motor (311), the connecting crossbar (323) is perpendicular to the stirring drive motor (311), and the bottom output end of the stirring drive motor (311) is connected to the connecting crossbar (323).

4. The device for detecting asphalt aging according to claim 1, characterized in that: The circumferential heating assembly (22) includes a circumferential cylinder (221) with a top opening that extends through the inside. The bottom of the circumferential cylinder (221) abuts against the top of the base (21). A bottom heating plate (222) is connected to the bottom of the circumferential cylinder (221). A circumferential heating ring (223) is uniformly arranged on the inner circumferential wall of the circumferential cylinder (221) for circumferential heating of the outer circumference of the asphalt testing sampling cylinder (1). The bottom heating plate (222) and the circumferential heating ring (223) are connected to the power supply mechanism through wires.

5. The device for detecting asphalt aging according to claim 1, characterized in that: The rotary drive assembly (23) includes a drive motor, the top output end of which is connected to the bottom of the circumferential cylinder (221).

6. The device for detecting asphalt aging according to claim 4, characterized in that: A support rod (224) is connected to the top of the base (21) outside the circumferential tube (221) to support the bottom of the outer circumferential wall of the top of the asphalt testing sampling tube (1).

7. The device for detecting asphalt aging according to claim 6, characterized in that: When the asphalt testing sampling tube (1) is placed inside the circumferential tube (221), the top of the support rod (224) is connected to the bottom of the asphalt testing sampling tube (1), and the outer wall of the asphalt testing sampling tube (1) abuts against the bottom heating plate (222) and the circumferential wall heating ring (223).

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