CN216350242U - Asphalt ultraviolet aging test device with control group - Google Patents
Asphalt ultraviolet aging test device with control group Download PDFInfo
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- CN216350242U CN216350242U CN202122955185.XU CN202122955185U CN216350242U CN 216350242 U CN216350242 U CN 216350242U CN 202122955185 U CN202122955185 U CN 202122955185U CN 216350242 U CN216350242 U CN 216350242U
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Abstract
The utility model provides an asphalt ultraviolet aging test device with a control group, which comprises a test box body, wherein the interior of the test box body is divided into an asphalt ultraviolet aging test area and an asphalt aging control test area through a partition plate, and bearing assemblies are arranged in the asphalt ultraviolet aging test area and the asphalt aging control test area; the test box body is internally provided with a high-pressure mercury lamp which is positioned above the two groups of bearing components, the asphalt aging contrast test area is respectively provided with filter glass and a spraying component, and the spraying component is connected with a circulating water supply device; and an ultraviolet light intensity sensor, a temperature and humidity control assembly and a control unit are also arranged in the test box body, and the high-pressure mercury lamp, the ultraviolet light intensity sensor, the circulating water supply device and the temperature and humidity control assembly are all connected with the control unit. The utility model can simulate the aging condition of the asphalt under the irradiation of natural temperature, humidity, rainfall and ultraviolet rays, and provides rapid and reliable comparison data for the asphalt aging test by setting the comparison group.
Description
Technical Field
The utility model relates to the field of asphalt aging technical simulation, in particular to an asphalt ultraviolet aging test device with a control group.
Background
With the wide application of asphalt pavements in China and the damage of the ozone layer caused by environmental pollution, the aging problem of asphalt pavements is increasingly highlighted. The ageing of asphalt occurs in the processes of storage, transportation, preparation and later pavement use of asphalt, the ageing of asphalt is affected most by heat, oxygen, light and water, and particularly, the asphalt becomes brittle and the adhesiveness is reduced under the action of strong ultraviolet rays, so that the low-temperature performance and the water stability of the asphalt mixture are reduced rapidly, and the ultraviolet ray ageing resistance of the asphalt mixture must be simulated before the asphalt is applied to the pavement.
The light aging of the asphalt comprises thermal oxidation aging and ultraviolet aging, in order to reduce the influence of the thermal oxidation aging on the simulation result of the ultraviolet aging of the asphalt and research the influence of a single ultraviolet factor on the aging of the asphalt, the current ultraviolet aging simulation equipment and method are only limited to temperature control or oxygen isolation. The equipment needs external heating, cooling and vacuum equipment, and the structure is often comparatively complicated.
Current pitch ultraviolet aging device evenly receives ultraviolet irradiation for guaranteeing the pitch sample, and ultraviolet lamp is located directly over the pitch sample, for preventing that the shower head shelters from ultraviolet light, and the shower head generally is located the ultraviolet lamp side, perhaps pitch test piece side, and the pitch sample can't receive moisture uniformly and erode, influences the authenticity of experimental data result.
Most of the object stages of the existing asphalt ultraviolet aging device are directly fixed at the lower part of the inner side of an asphalt ultraviolet aging box, and the distance between an ultraviolet lamp and an asphalt sample cannot be adjusted. In some devices, the objective table or the ultraviolet lamp is driven by the motor to move up and down, but equipment failure is easily caused due to the influence of temperature and humidity in the box, and the test is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the background art, the utility model provides an asphalt ultraviolet aging test device with a control group, which is used for simulating the aging condition of asphalt under natural temperature and humidity, rainfall and ultraviolet irradiation, and providing rapid and reliable comparison data for an asphalt aging test by setting the control group.
In order to solve the technical problems, the utility model adopts the following technical scheme: the asphalt ultraviolet aging test device with the control group comprises a test box body, wherein the interior of the test box body is divided into an asphalt ultraviolet aging test area and an asphalt aging control test area through a partition plate, and a group of bearing assemblies used for placing asphalt test pieces are arranged in the asphalt ultraviolet aging test area and the asphalt aging control test area; the test box body is internally provided with a high-pressure mercury lamp which is positioned above the two groups of bearing components.
And the asphalt aging contrast test area is internally provided with filter glass and a spraying assembly respectively, and the spraying assembly is connected with a circulating water supply device.
The ultraviolet light intensity sensor, the temperature and humidity control assembly and the control unit are arranged in the test box body respectively, and the high-pressure mercury lamp, the ultraviolet light intensity sensor, the circulating water supply device and the temperature and humidity control assembly are all connected with the control unit.
The bearing assembly comprises a carrying disc, the carrying disc is connected with a threaded straight rod through a nut, and the threaded straight rod is vertically fixed on the bottom wall of the test box body; and a plurality of sample trays matched with the asphalt test piece are arranged on the loading disc.
The spraying assembly comprises a spraying head matched with the asphalt test piece, the spraying head is arranged on the movable rod and is positioned between the sample tray and the filter glass, and the spraying head is communicated with the circulating water supply device; the movable rod is installed on the side wall of the test box body through the installation piece.
The circulating water supply device comprises a water supply pump, and the water supply pump is connected with the control unit; the water inlet of the water supply pump is communicated with the water tank, and the water outlet of the water supply pump is communicated with the spray header through a water outlet pipeline; one end of the water outlet pipeline is arranged on the inner side of the movable rod, and the other end of the water outlet pipeline is provided with a water flowmeter.
The water tank is communicated with a water collecting funnel through a return pipeline, the water collecting funnel is arranged below a bottom plate of the test box body, a drain hole is formed in the bottom plate of the test box body, and the drain hole corresponds to the water collecting funnel.
The number of the movable rods is two, and the two movable rods are connected through a connecting block; the connecting block is of a hollow structure and comprises an upper part and a lower part which are rotationally connected through a rotating shaft; the water outlet pipeline is respectively connected with the upper part and the lower part of the connecting block.
The temperature and humidity control assembly comprises a temperature and humidity sensor, the temperature and humidity sensor is arranged on the partition plate, an exhaust fan is further arranged on the partition plate, the exhaust fan is connected with a power assembly, the power assembly is mounted on the outer side of the top wall of the test box body, and the temperature and humidity sensor and the power assembly are both connected with the control unit; two ventilation openings are formed in the top wall of the test box body, and correspond to the asphalt ultraviolet aging test area and the asphalt aging contrast test area respectively.
During specific operation, the influence of rain wash and ultraviolet rays on asphalt aging can be simulated, the spraying assembly can be closed, the filter glass is installed, the temperature and the humidity in the whole test box body are kept the same, and then the influence degree of thermal oxidation and ultraviolet rays on asphalt aging is researched in a contrast manner; the influence of different ultraviolet heights on the aging of the asphalt can be simulated by adjusting the height of the carrying disc; the utility model provides detailed, sufficient and accurate comparison data for the asphalt ultraviolet aging test, and the residual penetration ratio, the ductility retention rate and the viscosity aging index are used as evaluation indexes to more comprehensively and reliably evaluate the ultraviolet aging resistance of the asphalt.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a load bearing assembly of the present invention;
FIG. 3 is a schematic structural view of the movable bar of the present invention;
fig. 4 is a schematic top view of fig. 3 at a.
In the figure: the device comprises a power assembly 1, a vent 2, a high-pressure mercury lamp 3, a partition plate 4, a sample tray 5, a loading disc 6, a threaded straight rod 7, a test box 8, an exhaust fan 9, filter glass 10, a spray head 11, a movable rod 12, a water flowmeter 13, a water supply pump 14, a temperature and humidity sensor 15, a support rod 16, a drain hole 17, a water collecting funnel 18, a control unit 19, a water tank 20, a nut 21, a water outlet pipeline 22, an installation part 23, an upper part 24-1, a lower part 24-2 and a rotating shaft 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Embodiment 1, as shown in fig. 1, the utility model provides an asphalt ultraviolet aging test device with a control group, which includes a test box 8, the interior of the test box 8 is divided into an asphalt ultraviolet aging test area and an asphalt aging control test area by a vertically arranged partition plate 4, the asphalt ultraviolet aging test area and the asphalt aging control test area are arranged side by side on the left and right sides of the test box 8, in this embodiment, the asphalt ultraviolet aging test area is arranged on the left side of the test box 8, and the asphalt aging control test area is arranged on the right side of the test box 8. And a group of bearing components for placing asphalt test pieces are arranged in the asphalt ultraviolet aging test area and the asphalt aging comparison test area, and the asphalt test pieces are respectively placed on the two bearing components during the aging test.
Further, as shown in fig. 2, the bearing assembly includes a carrying disc 6, the carrying disc 6 is connected with a threaded straight rod 7 through a nut 21 at the center of the carrying disc, the threaded straight rod 7 is vertically fixed on the bottom wall of the test box 8, and the distance between the carrying disc 6 and the high-pressure mercury lamp 3 is adjusted by rotating the nut 21 below the carrying disc 6 by applying the working principle of a lead screw guide rail. The loading disc 6 is provided with a plurality of sample trays 5 matched with the asphalt test pieces, and during testing, the asphalt test pieces are placed on the sample trays 5.
The inside top level of experimental box 8 is provided with high-pressure mercury lamp 3, and high-pressure mercury lamp 3 is located two sets of carrier assembly's top, and two spinal branch vaulting poles 16 of the internal left and right sides of experimental box are fixed at high-pressure mercury lamp 3's both ends, and the both ends of preferably high-pressure mercury lamp 3 are installed on the bracing piece 16 that corresponds through bolt or other mountings respectively, realize that high-pressure mercury lamp 3 can dismantle to in the change banks. The high-pressure mercury lamp 3 provides an ultraviolet irradiation environment for the test.
The test box body 8 is internally provided with an ultraviolet light intensity sensor and a control unit 19 respectively, the model of the ultraviolet light intensity sensor is HA-340, and the ultraviolet light intensity sensor is specifically arranged on the partition plate 4 and used for detecting the ultraviolet irradiation intensity of the high-pressure mercury lamp 3. The ultraviolet light intensity sensor is connected to the control unit 19 to transmit a detection signal to the control unit 19.
Still be provided with the spraying assembly in the pitch ageing contrast test district, the spraying assembly is located between carrier assembly and filter glass 10, and the spraying assembly is connected with the circulation water supply installation, and the setting of circulation water supply installation is on experimental box 8's outside right side, and the circulation water supply installation supplies water for the spraying assembly in order to simulate rainfall environment. The spray assembly comprises a spray head 11, the spray head 11 is arranged on a movable rod 12 and is positioned between the sample tray 5 and the filter glass 10, and the spray head 11 is communicated with the circulating water supply device. The circulating water supply device is used for supplying water to the spray head 11, and the water is sprayed out of the spray head 11 and falls on the asphalt test piece placed on the test piece tray 5. The circulating water supply device comprises a water supply pump 14, and the water supply pump 14 is connected with a control unit 19; and the water inlet of the water supply pump 14 is communicated with the water tank 20, the water outlet of the water supply pump 14 is communicated with the spray head 11 through the water outlet pipeline 22, one end of the water outlet pipeline 22 extending into the test box body 8 is arranged on the inner side of the movable rod 12, the other end of the water outlet pipeline 22 positioned outside the test box body 8 is provided with the water flow meter 13, and the water flow meter 13 is used for detecting the size of water flow in the water outlet pipeline 22. The water tank 20 is communicated with a water collecting funnel 18 through a return pipeline, the water collecting funnel 18 is arranged below the bottom plate of the test box body 8, a drain hole 17 is formed in the bottom plate of the test box body 8, and the drain hole 17 corresponds to the water collecting funnel 18. The specific implementation process of the structure provides power for the water supply pump 14 to pump water in the water tank 20, the water flows to the spray header 11 through the water outlet pipeline 22, and is finally sprayed out through the spray header 11, the water sprayed out by the spray header 11 falls on the asphalt test piece placed on the right-side loading disc 6, and the effect of simulating rainfall is achieved; the water falling into the test box body flows into the water collecting funnel 18 through the water discharging hole 17, and the water in the water collecting funnel 18 flows back into the water tank 20 through the return pipeline under the action of the water supply pump 14. A valve may also be provided on the return line to control the on/off of the return line to prevent the water in the tank 20 from flowing back.
In the present embodiment, as shown in fig. 3 and 4, the movable rods 12 are mounted on the side wall of the test chamber 8 by the mounting member 23, the number of the movable rods 12 is two, and the two movable rods 12 are connected by the connecting block. The connecting block comprises an upper part 24-1 and a lower part 24-2, and the upper part 24-1 and the lower part 24-2 are rotatably connected through a rotating shaft 25; the outlet pipe 22 is connected to the upper and lower portions 24-1 and 24-2 of the connecting block, respectively, which is a hollow structure for allowing the water in the outlet pipe 22 to pass through.
Still be provided with the temperature and humidity control subassembly in experimental box 8, this temperature and humidity control subassembly includes that the model is HMT 120's temperature and humidity sensor 15, and temperature and humidity sensor 15 sets up on baffle 4, and the rear side of baffle 4 still is provided with exhaust fan 9, and exhaust fan 9 is connected with power component 1, and power component 1 installs in the roof outside of experimental box 8, and power component 1 can adopt current fan driving motor assembly structure for provide power for exhaust fan 9. The temperature and humidity sensor 15 and the power assembly 1 are both connected with the control unit 19. Two ventilation openings 2 are formed in the top wall of the test box body 8, and the two ventilation openings 2 correspond to the asphalt ultraviolet aging test area and the asphalt aging contrast test area respectively. Temperature and humidity sensor 15 is used for detecting the humiture in pitch ultraviolet ageing test district and pitch ageing control test district and transmits for the control unit 19, and the control unit 19 controls exhaust fan 9 work through drive power component 1 to adjust the humiture environment in the whole test box.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an asphalt ultraviolet aging test device that has contrast group, includes experimental box (8), its characterized in that: the interior of the test box body (8) is divided into an asphalt ultraviolet aging test area and an asphalt aging comparison test area through a partition plate (4), and a group of bearing assemblies for placing asphalt test pieces are arranged in the asphalt ultraviolet aging test area and the asphalt aging comparison test area; a high-pressure mercury lamp (3) is arranged in the test box body (8), and the high-pressure mercury lamp (3) is positioned above the two groups of bearing components;
the asphalt aging contrast test area is internally provided with filter glass (10) and a spraying assembly respectively, and the spraying assembly is connected with a circulating water supply device;
the ultraviolet light intensity sensor, the temperature and humidity control assembly and the control unit (19) are arranged in the test box body (8) respectively, and the high-pressure mercury lamp (3), the ultraviolet light intensity sensor, the circulating water supply device and the temperature and humidity control assembly are all connected with the control unit (19).
2. The asphalt ultraviolet aging test device with the control group according to claim 1, characterized in that: the bearing assembly comprises a carrying disc (6), the carrying disc (6) is connected with a threaded straight rod (7) through a nut (21), and the threaded straight rod (7) is vertically fixed on the bottom wall of the test box body (8); and a plurality of sample trays (5) matched with the asphalt test piece are arranged on the loading disc (6).
3. The asphalt ultraviolet aging test device with the control group according to claim 2, characterized in that: the spraying assembly comprises a spraying head (11) matched with the asphalt test piece, the spraying head (11) is arranged on the movable rod (12) and is positioned between the sample tray (5) and the filter glass (10), and the spraying head (11) is communicated with the circulating water supply device; the movable rod (12) is installed on the side wall of the test box body (8) through an installation part (23).
4. The asphalt ultraviolet aging test device with the control group according to claim 3, characterized in that: the circulating water supply device comprises a water supply pump (14), and the water supply pump (14) is connected with a control unit (19); a water inlet of the water supply pump (14) is communicated with the water tank (20), and a water outlet of the water supply pump (14) is communicated with the spray header (11) through a water outlet pipeline (22); one end of the water outlet pipeline (22) is arranged on the inner side of the movable rod (12), and the other end of the water outlet pipeline (22) is provided with a water flow meter (13).
5. The asphalt ultraviolet aging test device with the control group according to claim 4, characterized in that: the water tank (20) is communicated with a water collecting funnel (18) through a return pipeline, the water collecting funnel (18) is arranged below a bottom plate of the test box body (8), a drain hole (17) is formed in the bottom plate of the test box body (8), and the drain hole (17) corresponds to the water collecting funnel (18).
6. The asphalt UV aging test apparatus with control group according to any one of claims 3 to 5, wherein: the number of the movable rods (12) is two, and the two movable rods (12) are connected through a connecting block; the connecting block is of a hollow structure and comprises an upper part (24-1) and a lower part (24-2), and the upper part (24-1) and the lower part (24-2) are rotatably connected through a rotating shaft (25); the water outlet pipeline (22) is respectively connected with the upper part (24-1) and the lower part (24-2) of the connecting block.
7. The asphalt ultraviolet aging test device with the control group according to claim 6, wherein the temperature and humidity control assembly comprises a temperature and humidity sensor (15), the temperature and humidity sensor (15) is arranged on the partition plate (4), an exhaust fan (9) is further arranged on the partition plate (4), the exhaust fan (9) is connected with the power assembly (1), the power assembly (1) is installed on the outer side of the top wall of the test box body (8), and the temperature and humidity sensor (15) and the power assembly (1) are both connected with the control unit (19); two ventilation openings (2) are formed in the top wall of the test box body (8), and the two ventilation openings (2) correspond to the asphalt ultraviolet aging test area and the asphalt aging contrast test area respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122955185.XU CN216350242U (en) | 2021-11-29 | 2021-11-29 | Asphalt ultraviolet aging test device with control group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122955185.XU CN216350242U (en) | 2021-11-29 | 2021-11-29 | Asphalt ultraviolet aging test device with control group |
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| CN216350242U true CN216350242U (en) | 2022-04-19 |
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| CN202122955185.XU Active CN216350242U (en) | 2021-11-29 | 2021-11-29 | Asphalt ultraviolet aging test device with control group |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223349A (en) * | 2022-12-07 | 2023-06-06 | 北京科技大学 | Aging box for monochromatic light irradiation test |
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2021
- 2021-11-29 CN CN202122955185.XU patent/CN216350242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223349A (en) * | 2022-12-07 | 2023-06-06 | 北京科技大学 | Aging box for monochromatic light irradiation test |
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