A specimen holding device for asphalt and coarse aggregate adhesion test

Abstract

The utility model relates to a sample clamping device of asphalt and coarse aggregate adhesion test, suitable for fixture device technical field. The utility model adopts the technical scheme: a sample clamping device of asphalt and coarse aggregate adhesion test has: the pole, the top of pole is provided with the hook, the bottom of pole is provided with at least two linkages along the circumferential direction of pole and is arranged along the radial direction of pole, the sample basket is installed in the end of linkage, and the sample basket can make the sample to be placed in suspension. In this way, the device can be hung on other components through the hook; by setting multiple linkages on the bottom of the pole and setting the sample basket on the linkages, multiple samples can be placed simultaneously, and by placing the pole in asphalt or boiling water, the multiple samples are in the same environment, the influence of different environments on the test results is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a sample clamping device for testing the adhesion between asphalt and coarse aggregate. It falls under the technical field of clamping devices. Background Technology

[0002] Asphalt concrete pavement boasts core advantages such as comfortable driving, convenient construction, high durability, easy maintenance, and economic and environmental benefits, and is widely used in highways and urban roads. The boiling water method is used to test the adhesion between asphalt and coarse aggregate surfaces and to evaluate the coarse aggregate's resistance to water-free stripping. Five aggregate particles should be tested in parallel for the same sample. During the test, the aggregate is cleaned and placed in an oven at 105℃±5℃ for 2 hours. Each aggregate particle is then tied securely in the middle with a thin thread and placed in an oven at +5℃ for at least 1 hour. The heated aggregate particles are then removed one by one, lifted with a thread, and immersed in preheated asphalt for 45 seconds before being gently removed. The asphalt-coated aggregate particles are suspended on a test frame to allow excess asphalt to drain off, and then cooled at room temperature for at least 2 hours. One by one, lift the line and immerse it in the center of a large beaker containing boiling water. Adjust the heating furnace to keep the water in the beaker at a gentle boil. After immersion for 3 minutes, remove the aggregate from the water, cool it appropriately, and then place it in a container such as a paper cup containing room temperature water. Observe the degree of peeling of the asphalt film on the aggregate particles in the water and determine its adhesion level.

[0003] Currently, the adhesion test between asphalt and coarse aggregate is generally carried out by manually tying ropes one by one. This method is not only time-consuming and inefficient, but also the ropes occupy the aggregate area, affecting the test quality, and there is a safety risk of being burned by asphalt. Utility Model Content

[0004] The technical problem to be solved by this utility model is: In order to solve the above-mentioned technical problem, this utility model provides a sample clamping device for the adhesion test between asphalt and coarse aggregate.

[0005] The technical solution adopted in this utility model is: a sample clamping device for testing the adhesion between asphalt and coarse aggregate, comprising: The lifting rod has a lifting hook at the top and at least two connecting rods arranged radially along the bottom of the lifting rod along the circumferential direction. The sample basket, installed at the end of the connecting rod, can hold the sample in mid-air.

[0006] The sample basket has a base plate mounted on a connecting rod, and at least three side plates are installed on the base plate. The sample is placed in the area enclosed by the base plate and the side plates. A bottom support structure is provided on the base plate, and a side support structure is provided on the side wall of the side plate facing the sample. The bottom support structure and the side support structure cooperate to suspend and clamp the sample.

[0007] The bottom support structure has a first pin mounted on the base plate.

[0008] The side support structure has a second pin mounted on the side plate.

[0009] The lifting rod, lifting hook, base plate, and side plates are all made of stainless steel.

[0010] The beneficial effects of this utility model are: by setting multiple sample baskets at the bottom of the lifting rod, it is convenient to place multiple samples, so that multiple samples can be subjected to operations such as asphalt immersion and boiling in water at the same time, so that the samples are under the same conditions and the test time is saved. This invention provides multiple side plates on a base plate, a first ejector pin on the base plate, and a second ejector pin on the side plates. This allows the sample to be suspended in the air by the cooperation of the first and second ejector pins when the sample is placed in the area enclosed by the base plate and the side plates. Furthermore, because the contact area between the ejector pin and the sample is small, the impact on the sample quality is minimal. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the clamping component in this utility model.

[0013] In the diagram: 1. Lifting hook; 2. Lifting rod; 3. Connecting rod; 4. Clamping component; 5. Side plate; 6. Base plate; 7. Second ejector pin; 8. First ejector pin. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0015] Example 1 is a sample clamping device for an adhesion test between asphalt and coarse aggregate. In this example, it has: The lifting rod 2 has a lifting hook 1 at its top and at least two connecting rods 3 arranged radially along the bottom of the lifting rod 2 along its circumferential direction. In this embodiment, there are five connecting rods 3. The sample basket 4 is installed at the end of the connecting rod 3, allowing the sample to be suspended in the air. This facilitates hanging the sample clamping device onto other components via the lifting hook 1. By setting multiple connecting rods 3 at the bottom of the lifting rod 2 and mounting the sample basket 4 on the connecting rods 3, it is convenient to place multiple samples simultaneously. Furthermore, by immersing the lifting rod 2 in asphalt or boiling water, multiple samples are kept in the same environment, reducing the influence of different environments on the test results and significantly shortening the test time. In this embodiment, five connecting rods 3 are installed on the lifting rod 2.

[0016] In this embodiment, the sample basket 4 has a base plate 6 mounted on a connecting rod 3, and at least three side plates 5 are mounted on the base plate 6. The sample is placed in the area enclosed by the base plate 6 and the side plates 5. A bottom support structure is provided on the base plate 6, and a side support structure is provided on the side wall of the side plate 5 facing the sample. The bottom support structure and the side support structure cooperate to suspend the sample. Thus, when the sample is placed in the area enclosed by the base plate 6 and the side plates 5, the bottom support structure and the side support structure cooperate to suspend the sample.

[0017] In this embodiment, the bottom support structure has a first ejector pin 8 mounted on the bottom plate 6. The side support structure has a second ejector pin 7 mounted on the side plate 5. Thus, because the contact area between the first ejector pin 8, the second ejector pin 7 and the sample is small, their impact on the test is minimal.

[0018] In this embodiment, the lifting rod 2, the lifting hook 1, the base plate 6, and the side plate 5 are all made of stainless steel.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sample clamping device for a test of the adhesion between asphalt and coarse aggregate, characterized in that: have: Lifting rod (2), with a lifting hook (1) at the top and at least two connecting rods (3) arranged in the radial direction of the lifting rod (2) at the bottom of the lifting rod (2) along the circumferential direction of the lifting rod (2). The sample basket (4) is installed at the end of the connecting rod (3) and can hold the sample in the air.

2. The sample clamping device for the adhesion test between asphalt and coarse aggregate according to claim 1, characterized in that: The sample basket (4) has a base plate (6) mounted on a connecting rod (3), and at least three side plates (5) are mounted on the base plate (6). The sample is placed in the area enclosed by the base plate (6) and the side plates (5). A bottom support structure is provided on the base plate (6), and a side support structure is provided on the side wall of the side plate (5) facing the sample. The bottom support structure and the side support structure cooperate to suspend and clamp the sample.

3. The sample clamping device for the adhesion test between asphalt and coarse aggregate according to claim 2, characterized in that: The bottom support structure has a first pin (8) mounted on the bottom plate (6).

4. The sample clamping device for the adhesion test between asphalt and coarse aggregate according to claim 3, characterized in that: The side support structure has a second ejector pin (7) mounted on the side plate (5).

5. The sample clamping device for the adhesion test between asphalt and coarse aggregate according to claim 2, characterized in that: The lifting rod (2), lifting hook (1), bottom plate (6) and side plate (5) are all made of stainless steel.

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