CN219455825U - Asphalt friction performance testing device - Google Patents
Asphalt friction performance testing device Download PDFInfo
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- CN219455825U CN219455825U CN202320594016.4U CN202320594016U CN219455825U CN 219455825 U CN219455825 U CN 219455825U CN 202320594016 U CN202320594016 U CN 202320594016U CN 219455825 U CN219455825 U CN 219455825U
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- asphalt
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- piece
- performance testing
- platform
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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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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an asphalt friction performance testing device, belongs to the technical field of asphalt performance testing, and solves the problem that the existing testing device cannot test the influence of aggregate on asphalt; the device comprises a loading piece and a base bracket which are respectively fixed on a dynamic shear rheometer, wherein a swinging block platform is arranged between the loading piece and the base bracket, a swinging piece is arranged in a second groove on the base bracket, and the swinging block platform is arranged on the swinging piece and swings on the base bracket through the swinging piece; asphalt is fixed at the bottom of the material collecting tray of the loading part, and the dynamic shear rheometer drives the material collecting tray to move and match with the swinging block platform to squeeze the asphalt. The utility model can be connected with a common dynamic shear rheometer, and the dynamic shear rheometer is used for providing load to enable the swinging block platform to be in contact with asphalt on the aggregate tray so as to simulate the process of extruding asphalt by aggregate, thereby being convenient for testing the influence of the aggregate on the asphalt.
Description
Technical Field
The utility model relates to the technical field of asphalt performance testing, in particular to an asphalt friction performance testing device.
Background
At present, in order to realize the environmental friendliness and sustainability of asphalt pavement, a warm mix asphalt technology with the functions of energy conservation and emission reduction is widely applied. The addition of warm mix makes the compaction process of the asphalt mixture more efficient, so that the asphalt pavement can be compacted at a lower temperature than typical, which greatly reduces the energy consumption during construction. Tribology has been used to understand and quantify compaction of asphalt mixtures and to evaluate the cooling effect of warm mix agents.
During compaction of the asphalt mix, some warm mix asphalt is able to form a boundary lubrication film that protects the aggregate particles from direct solid-solid contact, thereby reducing friction between the particles. At present, asphalt tribology testing devices commonly used in China, such as a TA dynamic shear rheometer, wherein the TA dynamic shear rheometer is used for a friction clamp of the dynamic shear rheometer, and only the friction performance of asphalt on a metal mold can be tested, but the influence of aggregate on the asphalt cannot be tested.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides an asphalt friction performance testing device, which solves the problem that the existing testing device cannot test the influence of aggregate on asphalt.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the asphalt friction performance testing device comprises a loading piece and a base bracket which are respectively fixed on a dynamic shear rheometer, wherein a swinging block platform is arranged between the loading piece and the base bracket, a swinging piece is arranged in a second groove on the base bracket, and the swinging block platform is arranged on the swinging piece and swings on the base bracket through the swinging piece; asphalt is fixed at the bottom of the material collecting tray of the loading part, and the dynamic shear rheometer drives the material collecting tray to move and match with the swinging block platform to squeeze the asphalt.
In this scheme, place the pitch on the dish that gathers materials, utilize dynamic shear rheometer to provide the load and make the swing piece platform and gather materials the pitch contact on the dish to simulate the extrusion pitch process that gathers materials, and adopt the swing piece to make the swing piece platform swing on the base support, with the swing that gathers materials of simulation pitch compaction in-process, be convenient for test aggregate to the influence of pitch.
Further, the loading piece comprises a loading rod, the loading rod is a round rod, one end of the round rod is fixed on the connecting end of the dynamic shear rheometer, the other end of the round rod is fixedly connected with the center of the disc, and the collecting disc is adhered to the bottom surface of the disc; the collecting tray can be made of different aggregate types so as to analyze the influence of various aggregate types on asphalt.
Further, the collecting tray is adhered to the disc through heat-resistant epoxy resin; the heat-resistant epoxy resin has good mechanical property, heat resistance, high adhesion coefficient and is beneficial to improving the adhesion strength of the material collecting disc and the disc, and the performance of the heat-resistant epoxy resin is prevented from being influenced by hot asphalt.
Further, the swinging block platform comprises a swinging platform, a boss is arranged in the middle of the upper surface of the swinging platform, two material collecting blocks are oppositely arranged on the boss, and the two material collecting blocks are adhered to the boss through heat-resistant epoxy resin; the middle part of the lower surface of the swing platform is provided with a first groove in a penetrating way, and the swing piece is arranged between the first groove and the second groove; the two aggregate blocks are oppositely arranged on the boss, so that asymmetric bending moment is eliminated.
Further, the aggregate block is cubic.
Further, the swinging piece is cylindrical, and the swinging piece is cylindrical, so that the swinging piece can roll, and the swinging platform can swing on the base support.
Further, the base support is a solid cuboid, the second groove penetrates through the middle of the upper surface of the cuboid, and the swing platform is placed in the second groove; the middle part of the lower surface of the cuboid is fixed with one end of a bolt, and the other end of the bolt is fixedly connected with the dynamic shear rheometer; the plug pin is convenient to be fixedly connected with the dynamic shear rheometer.
Further, the depth of the second groove is larger than the height of the swing platform, so that the swing piece is accommodated in the second groove, and the swing platform is prevented from being separated from the base support due to overlarge swing amplitude.
Further, the base support and the swinging piece are made of aluminum alloy, and the aluminum alloy is convenient to process and manufacture.
The utility model discloses an asphalt friction performance testing device, which has the beneficial effects that:
1. the utility model can be connected with a common dynamic shear rheometer, and the dynamic shear rheometer is used for providing load to enable the swinging block platform to be in contact with asphalt on the aggregate tray so as to simulate the process of extruding asphalt by aggregate, thereby being convenient for testing the influence of the aggregate on the asphalt.
2. The aggregate tray and the aggregate blocks can be formed by different aggregates, so that the influence of various aggregates on asphalt can be analyzed conveniently.
Drawings
FIG. 1 is an exploded left side view of an asphalt friction performance testing apparatus;
FIG. 2 is an exploded elevation view of an asphalt friction performance testing apparatus;
FIG. 3 is a front view of the loader;
FIG. 4 is a top view of the loader;
FIG. 5 is a front view of a wobble block platform;
FIG. 6 is a left side view of the swing block platform;
FIG. 7 is a front view of the oscillating member;
FIG. 8 is a front view of the base bracket;
FIG. 9 is a left side view of the base bracket;
wherein: 10. a loading member; 11. a loading rod; 12. a collecting tray; 20. a swinging block platform; 21. a swinging platform; 22. a collecting block; 23. a boss; 24. a first groove; 25. a heat resistant epoxy resin; 30. a swinging member; 40. a base bracket; 41. a second groove; 42. a bolt.
Detailed Description
The following description of the embodiments of the present utility model is provided to facilitate understanding of the present utility model by those skilled in the art, but it should be understood that the present utility model is not limited to the scope of the embodiments, and all the utility models which make use of the inventive concept are protected by the spirit and scope of the present utility model as defined and defined in the appended claims to those skilled in the art.
Example 1
The embodiment provides an asphalt friction performance testing device, and aims to solve the problem that the existing testing device cannot test the influence of aggregate on asphalt.
Referring to fig. 1 to 2, an asphalt friction performance testing apparatus of the present embodiment includes a loader 10, a swing block platform 20, a swing member 30, and a base bracket 40.
The loading piece 10 is fixed at the connecting end of the dynamic shear rheometer, so that the dynamic shear rheometer can conveniently drive loading movement and provide load for the loading piece 10, and the loading piece 10 and the swinging block platform 20 are matched to squeeze asphalt to simulate the process of compacting asphalt by aggregate.
The swinging block platform 20 is used for placing asphalt in cooperation with the loader 10, and the swinging member 30 is used for providing a certain swinging range so that the swinging block platform 20 can swing to simulate the swinging of aggregate in the asphalt compaction process.
The base support 40 is fixed at the connection end of the dynamic shear rheometer, and the base support 40 is used for bearing the swinging member 30 and the swinging block platform 20.
The dynamic shear rheometer of the embodiment adopts a conventional arrangement in the art, for example, a TA dynamic shear rheometer, a DSR dynamic shear rheometer, and preferably a TA dynamic shear rheometer, and the working connection and connection relationship thereof will not be described in detail because the dynamic shear rheometer is the prior art.
Referring to fig. 3 to 4, as a further aspect of the present embodiment, the loader 10 includes a loading lever 11 and a tray 12; the loading rod 11 is a round rod, one end of the round rod is fixed on the connecting end of the dynamic shear rheometer, the other end of the round rod is fixedly connected with the center of the disc, and the collecting disc 12 is adhered to the bottom surface of the disc through heat-resistant epoxy resin 25; the heat-resistant epoxy resin 25 has good mechanical property, heat resistance, high adhesion coefficient and is beneficial to improving the adhesion strength of the collecting tray 12 and the disc, and the performance of the heat-resistant epoxy resin is prevented from being influenced by hot asphalt.
The collecting tray 12 is cylindrical, and the collecting tray 12 can be formed by adopting different kinds of aggregates so as to analyze the influence of various aggregates on asphalt.
The tray 12 of this embodiment is made by electric drilling with a diamond bit.
The aggregate tray 12 of the present embodiment can be formed by different aggregates, such as limestone, basalt, granite, etc., so as to simulate the contact between aggregates of different materials and asphalt membrane, and facilitate the analysis of the influence of various aggregates on asphalt.
Referring to fig. 7, as a further aspect of the present embodiment, the swing member 30 is cylindrical and made of aluminum alloy, and the swing member 30 is cylindrical to facilitate the rolling of the swing member 30, so as to swing on the base frame 40 by using the swing platform 21.
Referring to fig. 8-9, in a further aspect of the present embodiment, the base support 40 is a cuboid made of an aluminum alloy, the second groove 41 is formed in a middle portion of an upper surface of the cuboid in a penetrating manner, and the swinging platform 21 is placed in the second groove 41; the depth of the second groove 41 is greater than the height of the swinging platform 21, so that the swinging member 30 is accommodated in the second groove 41, and the swinging platform 21 is prevented from being separated from the base bracket 40 due to overlarge swinging amplitude.
The middle part of the lower surface of the cuboid is fixed with one end of a bolt 42, and the other end of the bolt 42 is fixedly connected with a dynamic shear rheometer; the use of the pin 42 facilitates a secure connection with the dynamic shear rheometer.
Example 2
This example provides one embodiment of the swing block platform 20 for the purpose of simulating aggregate swing compaction of asphalt.
Referring to fig. 5 to 6, the swing block platform 20 includes a swing platform 21 and two aggregate blocks 22, a boss 23 is provided in the middle of the upper surface of the swing platform 21, two aggregate blocks 22 are oppositely provided on the boss 23, the two aggregate blocks 22 are cubes, and the two aggregate blocks 22 are adhered to the boss 23 through a heat-resistant epoxy resin 25; the two aggregate blocks 22 are oppositely arranged on the boss 23, so that asymmetric bending moment is eliminated. When the dynamic shear rheometer is loaded, the aggregate pins contact asphalt on the aggregate tray 12 to simulate compaction.
The aggregate block 22 of the present embodiment can be formed by different aggregates, such as limestone, basalt, granite, etc., so as to simulate the contact between aggregates of different materials and asphalt membrane, and facilitate the analysis of the influence of various aggregates on asphalt.
The swing platform 21 has a first groove 24 penetrating through the middle of the lower surface thereof, and the swing member 30 is placed between the first groove 24 and the second groove 41.
The working principle of the scheme is as follows:
inverting the material collecting tray 12, dripping hot asphalt with fixed quality on the material collecting tray 12, fixing the loading piece 10 at the connecting end of the dynamic shear rheometer after the asphalt is cooled, starting the dynamic shear rheometer, driving the material collecting tray 12 to move and match with the material collecting block 22 on the swinging platform 21, and extruding the asphalt.
The swinging platform 21 is extruded by the material collecting tray 12, and the swinging piece 30 is forced to roll so that the swinging platform 21 swings on the base bracket 40 to simulate the swinging of the material collecting in the asphalt compacting process, thereby facilitating the testing of the influence of the material collecting on the asphalt.
Although specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (9)
1. An asphalt friction performance testing device is characterized in that: the dynamic shear rheometer comprises a loading piece (10) and a base bracket (40) which are respectively fixed on the dynamic shear rheometer, wherein a swinging block platform (20) is arranged between the loading piece (10) and the base bracket (40), a swinging piece (30) is arranged in a second groove (41) on the base bracket (40), and the swinging block platform (20) is arranged on the swinging piece (30) and swings on the base bracket (40) through the swinging piece (30);
asphalt is fixed at the bottom of a collecting tray (12) of the loading part (10), and the dynamic shear rheometer drives the collecting tray (12) to move and match with the swinging block platform (20) to extrude the asphalt.
2. The asphalt friction performance testing apparatus according to claim 1, wherein: the loading piece (10) comprises a loading rod (11), the loading rod (11) is a round rod, one end of the round rod is fixed on the connecting end of the dynamic shear rheometer, the other end of the round rod is fixedly connected with the center of the disc, and the collecting disc (12) is adhered to the bottom surface of the disc.
3. The asphalt friction performance testing apparatus according to claim 2, wherein: the collecting tray (12) is adhered to the disc through heat-resistant epoxy resin (25).
4. The asphalt friction performance testing apparatus according to claim 1, wherein: the swinging block platform (20) comprises a swinging platform (21), a boss (23) is arranged in the middle of the upper surface of the swinging platform (21), two aggregate blocks (22) are oppositely arranged on the boss (23), and the two aggregate blocks (22) are adhered to the boss (23) through heat-resistant epoxy resin (25); the middle part of the lower surface of the swing platform (21) is provided with a first groove (24) in a penetrating mode, and the swing piece (30) is placed between the first groove (24) and the second groove (41).
5. The asphalt friction performance testing apparatus according to claim 4, wherein: the aggregate block (22) is a cube.
6. The asphalt friction performance testing apparatus according to claim 4, wherein: the swinging piece (30) is cylindrical.
7. The asphalt friction performance testing apparatus according to claim 4, wherein: the base support (40) is a solid cuboid, the second groove (41) penetrates through the middle of the upper surface of the cuboid, and the swing platform (21) is placed in the second groove (41); the middle part of the lower surface of the cuboid is fixed with one end of a bolt (42), and the other end of the bolt (42) is fixedly connected with the dynamic shear rheometer.
8. The asphalt friction performance testing apparatus according to claim 7, wherein: the depth of the second groove (41) is larger than the height of the swing platform (21).
9. The asphalt friction performance testing apparatus according to claim 1, wherein: the base support (40) and the swinging piece (30) are made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594016.4U CN219455825U (en) | 2023-03-23 | 2023-03-23 | Asphalt friction performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594016.4U CN219455825U (en) | 2023-03-23 | 2023-03-23 | Asphalt friction performance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219455825U true CN219455825U (en) | 2023-08-01 |
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ID=87422227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320594016.4U Active CN219455825U (en) | 2023-03-23 | 2023-03-23 | Asphalt friction performance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219455825U (en) |
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2023
- 2023-03-23 CN CN202320594016.4U patent/CN219455825U/en active Active
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