CN219512233U - Modified asphalt test device - Google Patents
Modified asphalt test device Download PDFInfo
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- CN219512233U CN219512233U CN202320268187.8U CN202320268187U CN219512233U CN 219512233 U CN219512233 U CN 219512233U CN 202320268187 U CN202320268187 U CN 202320268187U CN 219512233 U CN219512233 U CN 219512233U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The utility model discloses a modified asphalt test device, which belongs to the technical field of asphalt test equipment, and comprises a bottom plate and a bracket arranged on the bottom plate, wherein a heating barrel is arranged on the bottom plate, a sample containing inner barrel for containing a modified asphalt sample is arranged in the heating barrel, a stirring mechanism and a shearing mechanism are respectively connected to the bracket through cross clamps, the stirring mechanism and the shearing mechanism are respectively penetrated and reserved in corresponding slots on a barrel cover of the heating barrel to extend to the sample containing inner barrel, the shearing part of the shearing mechanism is positioned at the lower half part of the sample containing inner barrel and is lower than the stirring part of the stirring mechanism, and the movable ranges of the shearing part and the stirring part in the vertical direction are not overlapped and crossed. The modified asphalt test device can realize test of the modified asphalt sample, and has the advantages of good safety, clear device structure, simple operation and convenient maintenance.
Description
Technical Field
The utility model belongs to the technical field of asphalt testing equipment, and particularly relates to a modified asphalt testing device.
Background
The material is a dynamic force for the inexhaustible social progress, and is a foundation for the infrastructure construction of traffic, civil engineering, construction, hydraulic engineering and the like. Along with the application development of polymer modified asphalt technologies such as SBS and the like in China for nearly 40 years, various indexes reach bottlenecks, iteration problems of the modified asphalt technologies are put forward, and the progress of the modified asphalt technologies is not separated from the development and improvement of new material modification tests and test equipment in laboratories.
When the modified asphalt technology is developed, a laboratory preparation modified asphalt sample test is carried out in advance, and industrial pilot scale production is carried out after the performance test reaches the expectation. However, in the factory pilot test process, pilot test production results are often inconsistent with laboratory test results, so that pilot test failure and cost loss are caused.
At present, equipment capable of simulating modified asphalt pilot plant test in a laboratory is not common and customized, the operation is complex, the maintenance is complicated, asphalt residues in a cylinder body and a pipeline after the test are difficult to clean, and the cross contamination is serious. Therefore, the device which is convenient to operate, low in cost and free of residues and can simulate the pilot plant test of the modified asphalt is developed and has wide prospect.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a modified asphalt test device which can realize test of a modified asphalt sample, and has the advantages of good safety, clear device structure, simple operation and convenient maintenance.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides a modified asphalt test device, which comprises a bottom plate and a bracket arranged on the bottom plate, wherein a heating barrel is arranged on the bottom plate, a sample containing inner barrel for containing an asphalt sample is arranged in the heating barrel, a stirring mechanism and a shearing mechanism are respectively arranged on the bracket through cross clamps, the stirring mechanism and the shearing mechanism are respectively penetrated and reserved in corresponding slots on a barrel cover of the heating barrel to extend to the sample containing inner barrel, the shearing part of the shearing mechanism is positioned at the lower half part of the sample containing inner barrel and is lower than the stirring part of the stirring mechanism, and the movable ranges of the shearing part and the stirring part in the vertical direction are not overlapped and crossed.
Further, the barrel bottom of the heating barrel is an asbestos fiber heat insulating plate and is provided with an annular barrel seat which protrudes upwards to support the bottom of the sample holding inner barrel, an asbestos heating belt which is wound in an annular shape and is lower than the top surface of the barrel seat is arranged in the annular barrel seat, and the barrel wall of the heating barrel is sequentially configured into a stainless steel layer, an asbestos fiber heat insulating layer and an asbestos heating belt from outside to inside.
Further, at least one overflow hole is formed in the barrel bottom between the barrel wall and the barrel seat, one end of the overflow hole is communicated with the annular cavity between the sample holding inner barrel and the barrel wall, and the other end of the overflow hole is communicated with a corresponding through hole in the bottom plate;
the barrel cover of the heating barrel comprises a cover body and a backflow part, wherein the cover body is a hollow cylinder matched with the top surface of the heating barrel in size, the backflow part is a hollow inverted cone communicated with the central control inner cavity of the cover body, and the backflow part extends downwards into an opening in the upper part of the sample holding inner barrel.
Further, a temperature sensor and an external exhaust port communicated with the hollow cavity of the barrel cover are arranged in the barrel cover.
Further, the automatic temperature control device also comprises a speed regulation and temperature control box, wherein the speed regulation and temperature control box comprises a stirring controller, a shearing controller, a heating controller and a heat dissipation window, the built-in junction box is connected with an external power supply control cabinet, the speed regulation and temperature control box is respectively and electrically connected with the stirring mechanism, the shearing mechanism and the temperature sensor, and the speed regulation and temperature control box is respectively arranged on the stirring motor through the stirring controller in a digital display speed regulation manner, and is used for controlling the shearing strength of the shearing motor and independently heating and temperature-controlling and heat-preserving the heating belt at the bottom and the heating belt at the side surface of the heating barrel through the shearing controller.
Further, a helical ribbon type stirring paddle is adopted as a stirring part of the stirring mechanism, and a gear shearing machine is adopted as a shearing part of the shearing mechanism.
Further, a rubber wheel is respectively arranged on the four corner reinforcing sheets at the bottom of the bottom plate.
Furthermore, the bracket is vertically welded on the bottom plate through the reinforcing sheet, the stirring mechanism and the shearing mechanism are both provided with fixing rods, and the fixing rods are connected with the cross clamps and can be fixed on the bracket in an adjustable manner.
Compared with the prior art, the utility model has the beneficial effects that:
(1) Unlike available pilot-scale equipment for customized modified asphalt, the present utility model has complicated operation, high purchasing and maintaining cost, clear structure, simple operation and convenient maintenance.
(2) The lower half part of the barrel cover is in an inverted cone shape, and a slotted hole of the stirring mechanism is communicated with the hollow cavity of the barrel cover and extends to the sample holding inner barrel, so that the modifier is convenient to add; the exhaust port at the upper part of the barrel cover is also communicated with the hollow cavity and can be connected with a smoke exhaust pipe so as to remove volatile asphalt smoke, thereby protecting the working environment in a laboratory; the reverse conical outer surface can also enable the heated volatile components of the modified asphalt in the sample holding barrel to partially condense and flow back into the asphalt sample holding inner barrel, meanwhile, the bottom of the heating barrel is provided with an overflow hole, so that the accumulation of materials such as asphalt in a heating cavity is reduced, the problem of residual asphalt cross contamination in the device is avoided, an inner pipeline is not required to be cleaned, the workload is greatly saved, the reliability of the test result of the modified asphalt is also ensured, and compared with the conventional laboratory small test equipment, the risk of fire disaster caused by high temperature of the residual asphalt is greatly reduced.
(3) In the use process of the testing device, a 20-25L iron barrel can be used as a testing container, the sample preparation requirement of about 20L can be met at a time, and the defects of time consumption and performance fluctuation of repeated sample preparation can be avoided.
Drawings
FIG. 1 is a schematic view of the appearance of a modified asphalt test apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a bottom view of a modified asphalt testing apparatus according to an embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of a heating barrel of a modified asphalt testing apparatus according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a heating barrel cover of a modified asphalt testing apparatus according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of a heating barrel of a modified asphalt testing apparatus according to an embodiment of the present utility model.
In the figure:
101. a bottom plate; 102. heating the barrel; 103. a speed-regulating temperature-controlling control box; 104. a stirring motor; 105. a shearing motor; 106. a bracket; 107. a cross clip; 108. a rubber wheel; 109. a reinforcing sheet; 201. a heat insulating plate; 202. an inner barrel for holding samples; 203. an exhaust port; 204. a barrel cover; 205. a temperature sensor; 206. a stirring section; 207. a shearing part; 208. an overflow aperture; 209. a barrel seat; 210. a side heating belt; 211. a bottom heating belt; 212. a cover body; 213. a reflow section; 301. a heating controller; 302. a stirring controller; 303. a shear controller; 304. and a heat dissipation window.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1 to 3, in an embodiment of the present utility model, there is provided a modified asphalt testing apparatus comprising a base plate 101 and a bracket 106 provided on the base plate 101. Specifically, a rubber wheel 108 is respectively arranged on the four corner reinforcing plates 109 at the bottom of the bottom plate 101, so that the position can be freely moved, and the laboratory test operation and cleaning and placement are facilitated. The bracket 106 is vertically welded to the base plate 101 through a reinforcing plate 109 for positioning the stirring mechanism and the shearing mechanism.
The bottom plate 101 is provided with a heating barrel 102, and a sample holding inner barrel 202 for holding a modified asphalt sample is arranged in the heating barrel 102, and the sample holding inner barrel 202 is heated by heating belts on the side wall and the bottom of the heating barrel 102.
In this embodiment, as shown in fig. 5, the bottom of the heating barrel 102 is an asbestos fiber heat insulation plate 201, and an annular barrel seat 209 protruding upwards to support the bottom of the sample holding inner barrel 202 is provided, an asbestos heating belt which is wound in an annular shape and is lower than the top surface of the barrel seat 209 is provided in the annular barrel seat 209, and the barrel wall of the heating barrel 102 is sequentially configured into a stainless steel layer, an asbestos fiber heat insulation layer and an asbestos heating belt from outside to inside.
A stirring mechanism and a shearing mechanism are respectively connected to the bracket 106 through cross clips 107. Specifically, the stirring mechanism and the shearing mechanism are both provided with fixing rods, and the fixing rods are connected with the cross clips 107 and can be fixed on the support 106 in an adjustable manner so as to realize the change of the high, low, front and rear positions of the stirring and shearing motor 105.
The stirring mechanism and the shearing mechanism are respectively penetrated and arranged on the barrel cover 204 of the heating barrel 102, corresponding slotted holes are reserved on the barrel cover 204 and extend to the sample containing inner barrel 202, and the shearing part 207 of the shearing mechanism is positioned at the lower half part of the sample containing inner barrel 202 and is lower than the stirring part 206 of the stirring mechanism. Specifically, the shearing part 207 of the shearing mechanism is positioned at the lower half part of the sample holding inner barrel 202, the stirring part 206 of the stirring mechanism is positioned at the upper half part of the sample holding inner barrel 202, and the movable ranges of the shearing part 207 and the stirring part 206 in the vertical direction are not overlapped and crossed.
In this embodiment, the stirring portion 206 of the stirring mechanism adopts a ribbon type stirring paddle, so that an ideal stirring effect can be achieved for the substantially high-viscosity modified asphalt sample at a low speed; the shearing portion 207 of the shearing mechanism adopts a gear shearing machine.
As shown in fig. 5, at least one overflow hole 208 is formed in the bottom between the barrel wall and the barrel seat 209, one end of the overflow hole 208 is connected to the annular cavity between the sample holding inner barrel 202 and the barrel wall, and the other end is connected to the corresponding through hole on the bottom plate 101, so that asphalt dripped on the side wall of the sample holding inner barrel 202 can be discharged into the heating barrel 102 under the heating condition.
As shown in fig. 4, the barrel cover 204 of the heating barrel 102 comprises a cover 212 and a backflow part 213, the cover 212 is a hollow cylinder matched with the top surface of the heating barrel 102 in size, the backflow part 213 is a hollow reverse cone communicated with the central cavity of the cover 212, the backflow part 213 extends downwards into the upper opening of the sample holding inner barrel 202, the barrel cover 204 is provided with a slot hole for penetrating the stirring mechanism and the shearing mechanism, the modifier, the stabilizer and the like are conveniently added into the sample holding inner barrel 202 through the slot hole, and the heated volatile components of the modified asphalt in the sample holding inner barrel 202 can be partially condensed and reflowed into the asphalt sample holding inner barrel 202 along the reverse cone surface.
In this embodiment, as shown in fig. 4, a temperature sensor 205 and an external exhaust port 203 which is communicated with the hollow cavity of the barrel cover 204 are further provided in the barrel cover 204, so that the temperature of the asphalt sample in the barrel can be conveniently observed and measured, volatile asphalt smoke can be removed, and the working environment in a laboratory can be protected.
The testing device further comprises a speed-regulating temperature-controlling control box 103, the speed-regulating temperature-controlling control box 103 comprises a stirring controller 302, a shearing controller 303, a heating controller 301 and a heat dissipation window 304, the built-in junction box is connected with an external power supply control cabinet, the speed-regulating temperature-controlling control box 103 is respectively electrically connected with the stirring mechanism, the shearing mechanism and the temperature sensor 205, the stirring motor 104 is respectively subjected to digital display speed regulation through the stirring controller 302, the shearing strength of the shearing motor 105 is controlled by the shearing controller 303, and the heating controller 301 is used for independently heating and controlling the temperature and preserving heat of the heating belt 211 and the side heating belt 210 at the bottom of the heating barrel 102.
The following description is made of the test method of the modified asphalt test apparatus provided by the present utility model in connection with specific examples.
Example 1:
test purpose: the YYC-3 modified asphalt is subjected to a stable pilot scale up test, and the test using operation is specifically as follows:
step 1) the formulation of the amplification contrast test is determined according to 93.85% of certain raw material matrix asphalt, 4% of SBS-791h, 2% of WKD-1 type extender and 0.15% of YYC-3 type stabilizer.
Step 2) selecting raw asphalt to be taken, heating the raw asphalt in an oven until the raw asphalt can flow uniformly, taking one iron barrel of 20L, and weighing 15Kg of raw asphalt.
Step 3) putting the iron sheet barrel filled with raw asphalt into the heating barrel 102 of the device, and assembling the stirring device, the shearing device, the barrel cover 204 and the temperature sensor 205 according to FIG. 3, and connecting a smoke exhaust pipe.
Step 4), the power supply is switched on, the heating belt 211 at the bottom of the heating barrel 102 and the heating belt 210 at the side face are started, the heating temperature is set to 180 ℃, the stirring is started at a low speed to uniformly heat the raw material asphalt to 180 ℃, and the inside of the heating barrel is in a heat preservation state.
In the heating and stirring process, the inverted cone-shaped reflux part 213 can enable the heated volatile components of the modified asphalt in the sample holding inner barrel 202 to be partially condensed and flow back into the sample holding inner barrel 202 along the surface of the inverted cone-shaped reflux part 213; the overflow hole 208 is arranged on the barrel bottom between the barrel wall and the barrel seat 209, so that the asphalt dropped from the side wall of the sample holding inner barrel 202 can be discharged out of the heating barrel 102 under the heating condition through the overflow hole 208, and the phenomenon that the asphalt is scattered and accumulated to pollute the heating plate is avoided.
And 5) regulating down the air speed of the air exhaust interface 203, adding 0.64Kg of SBS modifier and 0.32Kg of extender from the opening of the stirring device of the barrel cover 204, simultaneously starting the shearing device to 4000 revolutions per minute, keeping the stirring device to operate, and operating the shearing device for 1 hour.
Step 6) the shearing apparatus was closed and 24 grams of YYC-3 type stabilizer was added over 30 minutes. The stirring device is kept to operate so as to uniformly stir the modified asphalt sample, and the stirring and the heat preservation are carried out for 2 hours.
And 7) when the device is stopped, stirring, heating and power-off are stopped, the stirring device, the shearing device, the temperature sensor 205 and the smoke exhaust pipe are disassembled, the barrel cover 204 is lifted to take out the stirring device, and finally the sample containing barrel is lifted to finish the asphalt modification test.
The pilot scale modified asphalt sample is taken to detect main performance indexes such as softening point, penetration, ductility and rotational viscosity, and meanwhile, small sample indexes of the same material formula are compared, and if the main indexes have no obvious fluctuation, the material and the formula can be subjected to the next factory level pilot scale test. If the main index has obvious non-human factor fluctuation indication, the material still needs to be subjected to multiple laboratory scale-up tests with different formulas to master the scale-up characteristics of the stabilizer for the next factory level pilot-scale test.
Example 2:
test purpose: a20 Kg sample of a certain type of rubber powder modified asphalt is prepared, and the test and use operations are as follows:
step 1) the preparation formula of the sample is determined according to 73.85% of asphalt which is a certain raw material matrix, 4% of SBS-791h, 4% of WKD-1 type extender, 18% of 80-mesh rubber powder and 0.15% of YYC-3 type stabilizer.
Step 2) selecting raw asphalt to be taken, heating the raw asphalt in an oven until the raw asphalt can flow uniformly, taking one 25L iron barrel, and weighing 14.77Kg of raw asphalt.
Step 3) putting the iron sheet barrel filled with raw asphalt into the heating barrel 102 of the device, and assembling the stirring device, the shearing device, the barrel cover 204 and the temperature sensor 205 according to FIG. 3, and connecting a smoke exhaust pipe.
Step 4), the power supply is switched on, the heating belt 211 at the bottom of the heating barrel 102 and the heating belt 210 at the side face are started, the heating temperature is set to 190 ℃, the stirring is started at a low speed to uniformly heat the raw material asphalt to 190 ℃, and the inside of the heating barrel is in a heat preservation state.
In the heating and stirring process, the inverted cone-shaped reflux part 213 can enable the heated volatile components of the modified asphalt in the sample holding inner barrel 202 to be partially condensed and flow back into the sample holding inner barrel 202 along the surface of the inverted cone-shaped reflux part 213; the overflow hole 208 is arranged on the barrel bottom between the barrel wall and the barrel seat 209, so that the asphalt dropped from the side wall of the sample holding inner barrel 202 can be discharged out of the heating barrel 102 under the heating condition through the overflow hole 208, and the phenomenon that the asphalt is scattered and accumulated to pollute the heating plate is avoided.
And 5) regulating down the air speed of the air exhaust interface 203, adding 0.8Kg of SBS modifier, 0.8Kg of extender and 3.6Kg of rubber powder from the opening of the stirring device of the barrel cover 204, simultaneously starting the shearing device to 4000 revolutions per minute, keeping the stirring device to operate, and operating the shearing device for 1 hour.
Step 6) the shear device was adjusted to 2000 rpm and 30 grams of YYC-3 stabilizer was added over 30 minutes. The stirring device is kept to operate so as to uniformly stir the modified asphalt sample, and the stirring and the heat preservation are carried out for 2 hours.
And 7) when the device is stopped, stirring, heating and power-off are stopped, the stirring device, the shearing device, the temperature sensor 205 and the smoke exhaust pipe are disassembled, the barrel cover 204 is lifted up to take out the stirring device, finally, the sample containing barrel is lifted up, sampling detection, cooling and packaging are carried out, and the modified asphalt preparation test of the rubber powder modified asphalt is completed.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (8)
1. The utility model provides a modified asphalt test device, includes the bottom plate and sets up the support on the bottom plate, a serial communication port, be provided with a heating barrel on the bottom plate, be provided with a flourishing appearance inner barrel that is used for holding modified asphalt sample in the heating barrel, be connected with a rabbling mechanism and a shearing mechanism through the cross clamp configuration on the support respectively, rabbling mechanism with shearing mechanism wear to establish respectively reserve in corresponding slotted hole on the heating barrel bung stretches to flourishing appearance inner barrel, shearing mechanism's shearing portion is located flourishing appearance inner barrel lower half and is less than stirring mechanism's stirring portion, and shearing portion and stirring portion are non-overlapping and crossing in vertical direction's range of motion.
2. The modified asphalt test apparatus of claim 1, wherein the bottom of the heating barrel is an asbestos fiber heat insulation plate, an annular barrel seat is arranged to upwards bulge and support the bottom of the sample holding inner barrel, an asbestos heating belt which is wound in an annular shape and is lower than the top surface of the barrel seat is arranged in the annular barrel seat, and the barrel wall of the heating barrel is sequentially provided with a stainless steel layer, an asbestos fiber heat insulation layer and an asbestos heating belt from outside to inside.
3. The modified asphalt test apparatus according to claim 2, wherein at least one overflow hole is formed in a barrel bottom between the barrel wall and the barrel seat, one end of the overflow hole is communicated with an annular cavity between the sample holding inner barrel and the barrel wall, and the other end of the overflow hole is communicated with a corresponding through hole in the bottom plate;
the barrel cover of the heating barrel comprises a cover body and a backflow part, wherein the cover body is a hollow cylinder matched with the top surface of the heating barrel in size, the backflow part is a hollow inverted cone communicated with the central control inner cavity of the cover body, and the backflow part extends downwards into an opening in the upper part of the sample holding inner barrel.
4. The modified asphalt testing apparatus of claim 3, wherein said barrel cover is internally provided with a temperature sensor and an external air exhaust interface communicated with the hollow cavity of the barrel cover.
5. The modified asphalt test apparatus of claim 4, further comprising a speed-regulating temperature-controlling control box, wherein the speed-regulating temperature-controlling control box comprises a stirring controller, a shearing controller, a heating controller and a heat dissipation window, the built-in junction box is connected with an external power supply control cabinet, the speed-regulating temperature-controlling control box is respectively and electrically connected with the stirring mechanism, the shearing mechanism and the temperature sensor, and the speed-regulating temperature-controlling control box is respectively arranged on a stirring motor in a digital display manner through the stirring controller, the shearing controller controls the shearing strength of the shearing motor, and the heating controller independently heats and controls the temperature and keeps the temperature of the heating belt at the bottom of the heating barrel and the heating belt at the side surface.
6. The modified asphalt test apparatus of claim 1, wherein said stirring means comprises a ribbon stirring paddle and said shearing means comprises a gear shearing machine.
7. The modified asphalt testing apparatus of claim 1, wherein each of said four corner reinforcing plates at the bottom of said base plate is provided with a rubber wheel.
8. The modified asphalt testing apparatus of claim 1, wherein said bracket is welded to the base plate vertically by means of a reinforcing plate, and said stirring mechanism and said shearing mechanism are each provided with a fixing rod, and are connected to said cross clip by means of a fixing rod and are fastened to said bracket in a manner of being elastically adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320268187.8U CN219512233U (en) | 2023-02-21 | 2023-02-21 | Modified asphalt test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320268187.8U CN219512233U (en) | 2023-02-21 | 2023-02-21 | Modified asphalt test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219512233U true CN219512233U (en) | 2023-08-11 |
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ID=87523182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320268187.8U Active CN219512233U (en) | 2023-02-21 | 2023-02-21 | Modified asphalt test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219512233U (en) |
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2023
- 2023-02-21 CN CN202320268187.8U patent/CN219512233U/en active Active
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