CN106644797B - Friction effect evaluation device for flowing mineral aggregate particle system - Google Patents
Friction effect evaluation device for flowing mineral aggregate particle system Download PDFInfo
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- CN106644797B CN106644797B CN201710057330.8A CN201710057330A CN106644797B CN 106644797 B CN106644797 B CN 106644797B CN 201710057330 A CN201710057330 A CN 201710057330A CN 106644797 B CN106644797 B CN 106644797B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/565—Investigating resistance to wear or abrasion of granular or particulate material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The invention discloses a device for evaluating the friction effect of a flowing mineral aggregate particle system, which comprises: the stirring device comprises a base, wherein a support and a stirring pot control box are respectively fixed at two ends of the base, and a stirring pot is connected between the support and the stirring pot control box through a transverse shaft; the upper part of the mixing pot control box is connected with a support column, the upper end of the support column is connected with a transverse plate, a vertical baffle plate is arranged on the transverse plate, and a motor, a speed reducer and a torque sensor are sequentially arranged on one side of the vertical baffle plate from top to bottom; the lower part of the torque sensor is connected with a connecting shaft, the connecting shaft penetrates through the transverse plate and extends into the mixing pot, and the lower end of the connecting shaft is connected with a stirring blade; the motor is connected with a frequency converter, and the torque sensor is connected with a data acquisition unit. The device for evaluating the friction effect of the flowing mineral aggregate particle system can acquire the stirring power and the stirring torque of the discrete asphalt mixture in real time and accurately reflect the friction effect of the mineral aggregate particle system.
Description
Technical Field
The invention relates to the field of road engineering asphalt mixture equipment tests, in particular to a device for evaluating a friction effect of a flowing dynamic mineral aggregate particle system.
Background
The mechanical and pavement performance of the asphalt mixture needs to be ensured by a good paving and compacting process, the mineral aggregate interface effect of the bulk asphalt mixture is a key factor influencing the paving uniformity and the compacting effect of the bulk asphalt mixture, however, for a long time, the field of road engineering focuses more on the research on the mechanical performance and the engineering application of pavement materials and structures, the construction quality control is mainly based on the engineering experience, in the processes of asphalt mixture blending, paving and the like, the asphalt mixture is in a loose flow state, the mineral aggregate particles continuously collide, roll, rotate and the like, the interface friction of the mineral aggregate particles is mainly the rolling friction, and meanwhile, the sliding friction exists.
The research on the microscopic mechanism of action and the dynamic characteristics of the mineral aggregate particle system in the engineering stages of paving, compacting and the like of the asphalt mixture is relatively less, so that the development of a friction effect evaluation device of the flowing mineral aggregate particle system based on friction torque is very urgent for the flowing state and the characteristics of the asphalt mixture.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a device for evaluating the friction effect of a flowing dynamic mineral aggregate particle system, which is used for acquiring the stirring power and the stirring torque of a discrete asphalt mixture in real time in the stirring process, accurately reflecting the friction effect of the mineral aggregate particle system and having great significance for controlling the uniformity of the asphalt mixture in the paving and compacting process and the segregation phenomenon of the asphalt mixture.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
A device for evaluating the friction effect of a flowing mineral aggregate particle system is characterized by comprising: the stirring device comprises a base, wherein a support and a stirring pot control box are respectively fixed at two ends of the base, and a stirring pot is connected between the support and the stirring pot control box through a transverse shaft; the upper part of the mixing pot control box is connected with a support column, the upper end of the support column is connected with a transverse plate, a vertical baffle plate is arranged on the transverse plate, and a motor, a speed reducer and a torque sensor are sequentially arranged on one side of the vertical baffle plate from top to bottom; the speed reducer is connected with the torque sensor through a first coupler, the lower part of the torque sensor is connected with a connecting shaft through a second coupler, the connecting shaft penetrates through the transverse plate and extends into the mixing pot, and the lower end of the connecting shaft is connected with a stirring blade; the motor is connected with a frequency converter; the torque sensor is connected with a data acquisition unit, and the signal output end of the torque sensor is connected with the signal input end of the data acquisition unit.
According to the device for evaluating the friction effect of the flowing state mineral aggregate particle system, the controller is arranged in the mixing pot control box and can control the mixing time of the mixing blades; the speed reducer is connected with the frequency converter through a lead, and the frequency converter can perform stepless speed change adjustment on the speed reducer so as to adjust the stirring speed of the bulk asphalt mixture and examine the quantitative influence of the stirring speed on the friction effect of the convective dynamic mineral aggregate particle system; the torque sensor is connected with the data acquisition unit through the wire, realizes the real-time output of the dynamic asphalt mixture of flowing mix in-process moment of torsion and through the mix power value of its program editor output mix in-process, and the experimental data that obtains carries out quick record through the data processor who is connected with the data acquisition unit and preserves, the analysis and processing of the experimental data of being convenient for, repeated maneuverability and data accuracy improve greatly, carry out the evaluation of dynamic mineral aggregate granule system friction effect from this.
Preferably, the support column is a liftable support column.
According to the device for evaluating the friction effect of the flowing dynamic mineral aggregate particle system, the support column is a lifting support column, and the stirring pot control box is internally provided with a controller for controlling the lifting of the support column, so that the lifting of the support column can be controlled, and the height of the stirring blade can be controlled.
Preferably, the mixing pot is a heatable mixing pot.
According to the device for evaluating the friction effect of the flowing mineral aggregate particle system, the mixing pot is a heatable mixing pot, and the stirring temperature of the asphalt mixture in the mixing pot can be controlled through the mixing pot control box.
Preferably, a mixing pot cover plate is further arranged on the connecting shaft, and the mixing pot cover plate is arranged at the upper end of the stirring blade and is less than or equal to the depth of the mixing pot from the bottom end of the stirring blade.
According to the device for evaluating the friction effect of the flowing mineral aggregate particle system, when the supporting column descends to enable the stirring blade to go deep into the mixing pot for stirring, the mixing pot cover plate at the upper end of the stirring blade can play a role in heat preservation on the asphalt mixture in the mixing pot.
Preferably, a temperature sensor is arranged on the mixing pot, a microprocessor and a temperature alarm are arranged in the mixing pot control box, the temperature signal output end of the temperature sensor is connected with the temperature signal input end of the microprocessor, and the temperature warning signal output end of the microprocessor is connected with the alarm signal input end of the temperature alarm.
According to the device for evaluating the friction effect of the flowing mineral aggregate particle system, the mixing pot is provided with the temperature sensor, the temperature sensor can measure the temperature in the mixing pot, the temperature of the mixing pot is set through the controller arranged in the mixing pot control box, the temperature sensor detects the temperature in the mixing pot and transmits a detected temperature signal to the microprocessor, when the temperature sensor detects that the temperature in the mixing pot exceeds the temperature in the mixing pot control box, the microprocessor outputs a temperature warning signal and transmits the temperature warning signal to the temperature alarm, and the temperature alarm outputs the temperature warning signal.
Preferably, the transverse shaft is a transverse shaft capable of movably rotating, and a rotating handle is arranged at the outer end of the transverse shaft connected with the support.
According to the device for evaluating the friction effect of the flowing mineral aggregate particle system, the mixing pot can be rotated and inclined by the aid of the movable and rotatable cross shaft, and when the asphalt mixture in the mixing pot needs to be poured out after being mixed, the movable and rotatable cross shaft is rotated by the aid of the rotating handle, so that the mixing pot is inclined, and the asphalt mixture in the mixing pot can be poured conveniently.
Preferably, a support plate is obliquely arranged between one side of the vertical baffle plate and the transverse plate.
Preferably, the inclination angle between the support plate and the vertical baffle is 45 degrees, and the inclination angle between the support plate and the transverse plate is 45 degrees.
According to the device for evaluating the friction effect of the flowing mineral aggregate particle system, the supporting plate is used for supporting and fixing the vertical baffle plate, and the inclination angles between the supporting plate and the vertical baffle plate and between the supporting plate and the horizontal plate are 45 degrees respectively, so that the device for evaluating the friction effect of the flowing mineral aggregate particle system is more stable.
Preferably, a plurality of reinforcing steel bars are radially arranged on the inner wall of the mixing pot and are uniformly distributed on the inner wall of the mixing pot.
According to the device for evaluating the friction effect of the flowing mineral aggregate particle system, the inner wall of the mixing pot is provided with the plurality of steel bars, so that the frictional resistance between the asphalt concrete and the inner wall of the mixing pot in the stirring process can be increased.
Preferably, the stirring blade comprises a plurality of groups of spiral stirring paddles, and each group of spiral stirring paddles is formed by welding two S-shaped blades in a spiral shape.
According to the device for evaluating the friction effect of the flowing mineral aggregate particle system, two S-shaped blades are welded together in a spiral shape to form the spiral stirring paddle, the stirring blades comprise at least two groups of spiral stirring paddles, and the spiral stirring paddles can be used for fully stirring and mixing asphalt concrete.
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The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic structural diagram of a device for evaluating the friction effect of a flowing mineral aggregate particle system according to the present invention;
FIG. 2 is a schematic diagram of a distribution structure of reinforcing steel bars on the inner wall of a mixing pot in the device for evaluating the friction effect of the flowing mineral aggregate particle system;
FIG. 3 is a schematic structural diagram of a stirring blade in the apparatus for evaluating the friction effect of a flowing mineral aggregate particle system according to the present invention;
in the figure: 1. a base; 2. a support; 3. a mixing pan control box; 4. a horizontal axis; 5. a mixing pot; 6. a support pillar; 7. a transverse plate; 8. a vertical baffle; 9. a motor; 10. a speed reducer; 11. a torque sensor; 12. a first coupling; 13. a second coupling; 14. a connecting shaft; 15. a stirring blade; 16. a frequency converter; 17. a data acquisition unit; 18. a data processor; 19. a mixing pot cover plate; 20. a temperature sensor; 21. rotating the handle; 22. a support plate; 23. reinforcing steel bars; 24. a spiral stirring paddle.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
Referring to fig. 1, the invention provides a friction effect evaluation device for a flowing mineral aggregate particle system, comprising: the stirring device comprises a base 1, wherein a support 2 and a stirring pot control box 3 are respectively fixed at two ends of the base 1, and a stirring pot 5 is connected between the support 2 and the stirring pot control box 3 through a cross shaft 4; the upper part of the mixing pot control box 3 is connected with a support column 6, the upper end of the support column 6 is connected with a transverse plate 7, a vertical baffle plate 8 is arranged on the transverse plate 7, and a motor 9, a speed reducer 10 and a torque sensor 11 are sequentially arranged on one side of the vertical baffle plate 8 from top to bottom; the speed reducer 10 is connected with the torque sensor 11 through a first coupler 12, the lower part of the torque sensor 11 is connected with a connecting shaft 14 through a second coupler 13, the connecting shaft 14 penetrates through the transverse plate 7 and extends into the mixing pot 5, and the lower end of the connecting shaft 14 is connected with a stirring blade 15; the motor 9 is connected with a frequency converter 16; the torque sensor 11 is connected with a data acquisition unit 17, and the signal output end of the torque sensor 11 is connected with the signal input end of the data acquisition unit 17.
In the above embodiment, the controller is arranged in the mixing pan control box 3, and can control the mixing time of the mixing blades 15; the motor 9 is connected with the speed reducer 10, the motor 9 is a three-phase asynchronous motor, the speed reducer 10 is connected with the frequency converter 16 through a lead, the frequency converter 16 is connected with the motor 9 and can carry out stepless speed change adjustment on the speed reducer 10, so that the stirring speed of the bulk asphalt mixture in the mixing pot 5 can be conveniently adjusted, and a researcher can conveniently investigate the quantitative influence of the stirring speed on the friction effect of the convective dynamic mineral aggregate particle system; torque sensor 11 passes through the wire and is connected with data collection station 17, realizes the real-time output of the dynamic asphalt mixture of flowing mix in-process moment of torsion and through the mix power value of its program editor output mix in-process, the experimental data that obtains carries out quick record through the data processor 18 of being connected with data collection station 17 and preserves, the analysis of the experimental data of being convenient for is handled, repeated maneuverability and data accuracy improve greatly, the evaluation of dynamic mineral aggregate granule system friction effect carries out from this.
According to an embodiment of the present invention, the supporting column 6 is a liftable supporting column.
In the above embodiment, the supporting column 6 is a lifting supporting column, the mixing pot control box 3 is internally provided with a controller for controlling the lifting of the supporting column 6, the lifting of the supporting column 6 can be controlled, the lifting of the supporting column 6 drives the transverse plate 7 and the vertical baffle plate 8 arranged on the transverse plate 7 to lift, and then the height of the stirring blade 15 arranged at the lower end of the connecting shaft 14, that is, the depth of the stirring blade extending into the mixing pot, can be controlled.
According to one embodiment of the invention, the mixing kettle 5 is a heatable mixing kettle.
In the above embodiment, the mixing pot 5 is a heatable mixing pot, and the mixing temperature of the asphalt mixture in the mixing pot 5 can be controlled by the mixing pot control box 3.
According to an embodiment of the invention, a mixing pan cover plate 19 is further arranged on the connecting shaft 14, and the mixing pan cover plate 19 is arranged at the upper end of the stirring blade 15, and the distance from the bottom end of the stirring blade 15 is less than or equal to the depth of the mixing pan 5.
In the above embodiment, when the supporting column 6 descends to enable the stirring blade 15 to go deep into the mixing pan 5 for stirring, the mixing pan cover plate 19 at the upper end of the stirring blade 15 can play a role in preserving heat of the asphalt mixture in the mixing pan 5.
According to an embodiment of the invention, the mixing pot 5 is provided with a temperature sensor 20, the mixing pot control box 3 is internally provided with a microprocessor and a temperature alarm, a temperature signal output end of the temperature sensor 20 is connected with a temperature signal input end of the microprocessor, and a temperature warning signal output end of the microprocessor is connected with an alarm signal input end of the temperature alarm.
In above embodiment, set up temperature sensor 20 on the mix pot 5, temperature sensor 20 can survey the temperature in the mix pot 5, the temperature of mix pot 5 is set up through the temperature controller who mixes pot control box 3 and is equipped with, temperature sensor 20 detects the temperature in the mix pot 5, and give microprocessor with the temperature signal transmission who detects, when temperature sensor 20 detects the temperature in the mix pot 5 and surpasses the temperature that mixes the pot control box and set up, microprocessor will output temperature warning signal and transmit for the temperature alarm, the temperature alarm will output temperature warning signal, the change of suggestion researcher mix pot internal temperature.
According to an embodiment of the present invention, the horizontal shaft 4 is a movably rotatable horizontal shaft, and the outer end of the horizontal shaft 4 connected with the support 2 is provided with a turning handle 21.
In above embodiment, the cross axle 4 of mobile rotation makes mixing pot 5 can the rotation and slope, when the bituminous mixture mix in mixing pot 5 finishes the back and need pour out, uses the cross axle 4 of the mobile rotation of rotation handle 21 rotation to realize mixing pot 5's slope, make things convenient for pouring of bituminous mixture in mixing pot 5.
According to an embodiment of the present invention, a support plate 22 is obliquely disposed between one side of the vertical baffle plate 8 and the horizontal plate 7.
According to an embodiment of the present invention, the inclination angle of the supporting plate 22 and the vertical baffle 8 is 45 °, and the inclination angle of the supporting plate 22 and the horizontal plate 7 is 45 °.
In the above embodiment, the supporting plate 22 is used for supporting and fixing the vertical baffle plate 8, and the inclination angles between the vertical baffle plate 8 and the transverse plate 7 are 45 °, respectively, so that the device for evaluating the friction effect of the flowing mineral aggregate particle system of the invention is more stable.
Referring to fig. 2, according to an embodiment of the present invention, a plurality of reinforcing bars 23 are radially disposed on an inner wall of the mixing pot 5, and the plurality of reinforcing bars 23 are uniformly distributed on the inner wall of the mixing pot 5.
In above embodiment, set up many reinforcing bars 23 on the inner wall of mix pot 5 and can increase the frictional resistance of asphalt concrete and mix pot 5 inner wall in the stirring process, prevent the drift phenomenon.
Referring to fig. 3, according to an embodiment of the present invention, the stirring blade 15 includes a plurality of sets of helical stirring blades 24, and each set of helical stirring blades 24 is formed by spirally welding two S-shaped blades.
In the above embodiment, the stirring blade 15 includes a plurality of sets of helical stirring paddles 24 formed by spirally welding two S-shaped blades, the stirring blade 15 includes at least two sets of helical stirring paddles 24, the helical stirring paddles 24 can sufficiently stir and mix asphalt concrete, the center distance between the two sets of helical stirring paddles 24 is 10cm, and the materials are stainless steel.
The main working process of the device for evaluating the friction effect of the flowing mineral aggregate particle system comprises the following steps:
firstly, starting a friction effect evaluation device of a flowing dynamic mineral aggregate particle system, setting a certain test temperature through a mixing pot control box, and preserving heat for a period of time until the temperature condition reaches the set requirement; then pouring the mineral aggregate with a certain gradation and a certain amount of asphalt into a mixing pot, and adjusting the height of a supporting column through a mixing pot control box to ensure that a cover plate of the mixing pot is just above the mixing pot so as to ensure that the temperature in the mixing pot does not dissipate too fast; the rotating speed required by the test is set for the frequency converter of the external connecting device, so that the stirring blades are driven to perform rotary mixing of the asphalt mixture under the combined action of the three-phase asynchronous motor and the speed reducer; the torque sensor and the data collector collect the trial test within a certain mixing time, the measured data can be recorded and stored in the data processor according to the plate, torque and mixing power values at the stirring blade, which are generated between the flowing state bulk asphalt mixtures due to the embedding and extrusion of the mineral aggregate and the bonding and lubricating action of the asphalt; after the test is finished, the asphalt mixture in the mixing pot is uniformly stirred, and the mixing pot control console automatically enables the friction effect evaluation device of the flowing mineral aggregate particle system to be in a standby state.
The working principle of the device for evaluating the friction effect of the flowing mineral aggregate particle system is as follows: the bulk asphalt mixture is in a low-speed semi-flowing state in the mixing process, the asphalt mixture is an uneven solid-liquid mixed granular substance, mineral aggregate particles in the asphalt mixture continuously collide, roll, rotate and the like under a certain rotating speed condition, and because of the embedding and squeezing action formed among particle systems in the mixture and the viscous action of asphalt on the mineral aggregate particles, the interface contact of the mineral aggregate particles is mainly rolling friction, the asphalt mixture can generate certain friction resistance on stirring blades in the mixing process; simultaneously under the influence of the inside self material nature of not considering bituminous mixture to frictional force, external environment is like the mix temperature, the mix speed, mix time and stirring vane's type all has very big influence to the friction of the inside mineral aggregate particle system of bituminous mixture, make the change of various factors all can arouse the change of the frictional resistance of stirring vane department, thereby lead to stirring vane mix power and mix moment of torsion to produce the change, so the dynamic mineral aggregate particle system frictional effect evaluation device of flow is through setting up the motor, speed reducer and converter, torque sensor, the mixing power and the mix moment of torsion that device test production when the dynamic bituminous mixture mixes in the mix pot such as data collection station come the frictional effect of representation bituminous mixture and mix moment of torsion and the interior mineral aggregate particle system of bituminous mixture.
Although the present invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A device for evaluating the friction effect of a flowing mineral aggregate particle system is characterized by comprising: the stirring device comprises a base, wherein a support and a stirring pot control box are respectively fixed at two ends of the base, and a stirring pot is connected between the support and the stirring pot control box through a transverse shaft; the upper part of the mixing pot control box is connected with a support column, the upper end of the support column is connected with a transverse plate, a vertical baffle plate is arranged on the transverse plate, a motor, a speed reducer and a torque sensor are sequentially arranged on one side of the vertical baffle plate from top to bottom, and a support plate is obliquely arranged between the other side of the vertical baffle plate and the transverse plate;
the speed reducer is connected with the torque sensor through a first coupler, the lower part of the torque sensor is connected with a connecting shaft through a second coupler, the connecting shaft penetrates through the transverse plate and extends into the mixing pot, and the lower end of the connecting shaft is connected with a stirring blade; the motor is connected with a frequency converter; the torque sensor is connected with a data acquisition unit and outputs a mixing power value in the mixing process through a program editor of the torque sensor; the signal output end of the torque sensor is connected with the signal input end of the data acquisition unit;
a plurality of reinforcing steel bars are radially arranged on the inner wall of the mixing pot and are uniformly distributed on the inner wall of the mixing pot; the mixing pot is a heatable mixing pot;
stirring vane contains multiunit spiral stirring rake, every group the spiral stirring rake is the heliciform welding by the blade of two S types and forms.
2. The apparatus for evaluating friction effect of flowing mineral aggregate particle system according to claim 1, wherein said supporting column is a liftable supporting column.
3. The apparatus for evaluating friction effect of flowing mineral aggregate particle system according to claim 1, wherein a cover plate of a mixing pot is further disposed on the connecting shaft, the cover plate of the mixing pot is disposed on the upper end of the stirring blade, and the distance from the bottom end of the stirring blade is less than or equal to the depth of the mixing pot.
4. The apparatus according to claim 3, wherein a temperature sensor is arranged on the mixing pan, a microprocessor and a temperature alarm are arranged in the mixing pan control box, a temperature signal output end of the temperature sensor is connected with a temperature signal input end of the microprocessor, and a temperature alarm signal output end of the microprocessor is connected with an alarm signal input end of the temperature alarm.
5. The apparatus for evaluating the friction effect of flowing dynamic mineral aggregate particle system according to claim 1, wherein the horizontal shaft is a movably rotatable horizontal shaft, and a rotating handle is arranged at the outer end of the horizontal shaft connected with the support.
6. The apparatus for evaluating the friction effect of flowing mineral aggregate particle system according to claim 1, wherein the inclination angle of the supporting plate to the vertical baffle is 45 ° and the inclination angle of the supporting plate to the horizontal plate is 45 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710057330.8A CN106644797B (en) | 2017-01-26 | 2017-01-26 | Friction effect evaluation device for flowing mineral aggregate particle system |
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| CN201710057330.8A CN106644797B (en) | 2017-01-26 | 2017-01-26 | Friction effect evaluation device for flowing mineral aggregate particle system |
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| CN106644797B true CN106644797B (en) | 2020-12-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203053821U (en) * | 2013-01-15 | 2013-07-10 | 西安科技大学 | Bituminous mixture workability test instrument |
| CN104090093A (en) * | 2014-07-21 | 2014-10-08 | 陕西高速机械化工程有限公司 | Novel emulsified asphalt mixing time tester |
| CN104833704A (en) * | 2015-05-28 | 2015-08-12 | 长安大学 | Bituminous mixture variable-speed stirrer, power testing device and power testing method |
| CN105548527A (en) * | 2016-01-31 | 2016-05-04 | 河海大学 | Device and method for testing de-emulsification speed of emulsified asphalt based on torque |
| CN205719865U (en) * | 2016-04-26 | 2016-11-23 | 山西省交通科学研究院 | A kind of test device for hot mixing asphalt mixture operational property |
-
2017
- 2017-01-26 CN CN201710057330.8A patent/CN106644797B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203053821U (en) * | 2013-01-15 | 2013-07-10 | 西安科技大学 | Bituminous mixture workability test instrument |
| CN104090093A (en) * | 2014-07-21 | 2014-10-08 | 陕西高速机械化工程有限公司 | Novel emulsified asphalt mixing time tester |
| CN104833704A (en) * | 2015-05-28 | 2015-08-12 | 长安大学 | Bituminous mixture variable-speed stirrer, power testing device and power testing method |
| CN105548527A (en) * | 2016-01-31 | 2016-05-04 | 河海大学 | Device and method for testing de-emulsification speed of emulsified asphalt based on torque |
| CN205719865U (en) * | 2016-04-26 | 2016-11-23 | 山西省交通科学研究院 | A kind of test device for hot mixing asphalt mixture operational property |
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