Experimental device for detecting arching effect of asphalt mixture

Abstract

The utility model discloses an experimental device for detecting the arching effect of an asphalt mixture. The experimental device comprises a supporting seat, a material container, an opening adjusting mechanism, a first graduated scale and a weighing assembly, a groove is formed in the top of the supporting seat; the material container is erected above the supporting seat, the material container is made of a transparent material, the material container is provided with a feeding port and a discharging port, and the discharging port is arranged in the middle of the notch of the groove in a right opposite mode; the opening adjusting mechanism is used for being arranged below the discharging opening and used for adjusting the opening size of the discharging opening, and the opening adjusting mechanism comprises two partition plates and two pairs of sliding rails. The first graduated scale is horizontally fixed at the top of the supporting seat; and the weighing assembly is arranged at the bottom of the groove. According to the device, the arching effect is visualized, the arching effect of the asphalt mixture is visually displayed, the influence of grading and asphalt labeling on the arching effect of the asphalt mixture is conveniently and deeply researched, and meanwhile, the device has the advantages of being easy to operate and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of detecting the arching effect of asphalt mixtures, specifically an experimental device for detecting the arching effect of asphalt mixtures. Background Technology

[0002] Asphalt mixtures are composite materials, mainly composed of asphalt, fine aggregates, coarse aggregates, and mineral powder. When using coarser aggregates with more uniform particle sizes, the asphalt primarily serves to fill gaps and bind the aggregates together. Interlocking occurs between particles, creating internal friction. The structural strength of this material mainly depends on this internal friction, and its dependence on the binding effect of the asphalt is relatively small, which is quite different from continuous medium materials.

[0003] The gradation curve of asphalt mixtures reflects the degree of interlocking between particles of different sizes. The grade of asphalt is related to its viscosity and penetration; therefore, changes in aggregate gradation and asphalt grade significantly affect the degree of interlocking. Grading has a significant impact on the road performance of structural asphalt mixtures, so the degree of aggregate interlocking also has a certain influence on road performance. When the gradation contains more coarse aggregates, especially larger-sized aggregates, the degree of interlocking in the asphalt mixture is greater. This results in higher shear strength, lower creep rate, and higher low-temperature failure strain in the structural asphalt mixture, as well as better high-temperature stability and low-temperature crack resistance. Furthermore, the degree of interlocking is closely related to the arching effect.

[0004] Detecting the arching effect of particles in asphalt mixtures is an important issue in engineering construction. However, currently there is no detection device capable of visually detecting the arching effect of asphalt mixtures, and it is difficult to obtain the arching effect of mixtures with different gradations and asphalt grades. Therefore, a device for directly detecting the arching effect of asphalt mixtures with different gradations and asphalt grades is particularly necessary. Utility Model Content

[0005] The purpose of this invention is to provide an experimental device for detecting the arching effect of asphalt mixtures. This device can not only solve the problem of the difficulty in visually detecting the arching effect, but also obtain the arching effect of mixtures with different gradations and asphalt grades.

[0006] The technical solution of this utility model is:

[0007] An experimental apparatus for detecting the arching effect of asphalt mixtures includes a support base, a container, an opening adjustment mechanism, a first scale, and a weighing component. The top of the support base has a groove. The container, made of transparent material, is mounted above the support base and has a feeding port and a discharge port, with the discharge port directly opposite the center of the groove. The container is used to hold asphalt mixtures of different gradations and asphalt grades. The opening adjustment mechanism is located below the discharge port and is used to adjust the opening size of the discharge port. The opening adjustment mechanism includes... The device includes two partition plates and two pairs of slide rails. The two partition plates are horizontally and symmetrically arranged on the left and right sides below the discharge port. Each pair of slide rails is located on the front and rear sides of each partition plate. Both pairs of slide rails are fixed to the top of the support base. The front and rear side walls of each partition plate are slidably connected to each pair of slide rails. A first scale is horizontally fixed to the top of the support base and located on one side of the two partition plates. It is used to reference the opening width of the discharge port of the two partition plates. A weighing component is set at the bottom of the groove. The weighing component is used to weigh the asphalt mixture falling from the discharge port into the groove.

[0008] Preferably, as a further improvement of this utility model, each of the partition plates is provided with a gripping part at the top.

[0009] Preferably, as a further improvement of this utility model, the grip portion is a handle or a pull ring.

[0010] Preferably, as a further improvement of this utility model, a friction layer is provided on the surface of the slide rail that contacts the partition plate, and the friction layer is used to slow down the sliding speed of the partition plate.

[0011] Preferably, as a further improvement of this utility model, a vertically arranged second scale is fixed on the outer wall of the material container, and the second scale is used to reference the height of the asphalt mixture contained in the material container.

[0012] Preferably, as a further improvement of this utility model, the weighing component includes an electronic weighing instrument, which is installed in the weighing trough.

[0013] Preferably, as a further improvement of this utility model, the electronic weighing instrument is provided with a material holding plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model can select different opening widths according to the quantity and size of coarse aggregates in the gradation by coordinating the first scale with the opening adjustment mechanism, thereby controlling the discharge time and speed, controlling the volume of falling asphalt mixture, and ensuring the accuracy of the experiment. The transparent material of the holding container and the weighing trough can intuitively display the arching effect of the asphalt mixture, which is convenient for in-depth research on the influence of gradation and asphalt grade on the arching effect of asphalt mixture. By observing and testing the falling weight, it is of great significance for studying the arching effect of granular mixtures, and provides a convenient experimental device for gradation optimization.

[0016] 2. This utility model has the advantages of simple operation and convenient maintenance, and can be applied to most occasions, making it worthy of promotion. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1 The specific embodiments of this utility model will be described in detail below. In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of a utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] Example 1

[0021] like Figure 1As shown, this utility model embodiment provides an experimental device for detecting the arching effect of asphalt mixtures, including a support base 9, a material container 1, an opening adjustment mechanism, a first scale 7, and a weighing component; the top of the support base 9 has a groove; the material container 1 is mounted above the support base 9, and the material container 1 is made of transparent material. The material container 1 has a feeding port and a discharge port, and the discharge port is directly opposite the center of the groove opening. The material container 1 is used to hold asphalt mixtures of different gradations and asphalt grades; the opening adjustment mechanism is located below the discharge port and is used to adjust the opening size of the discharge port. It includes two partition plates 3 and two pairs of slide rails 6. The two partition plates 3 are horizontally and symmetrically arranged on the left and right sides below the discharge port. Each pair of slide rails 6 is located on the front and rear sides of each partition plate 3. Both pairs of slide rails 6 are fixed to the top of the support base 9. The front and rear side walls of each partition plate 3 are slidably connected to each pair of slide rails 6. A first scale 7 is horizontally fixed to the top of the support base 9 and located on one side of the two partition plates 3. It is used to reference the opening width of the discharge port of the two partition plates 3. A weighing component is set at the bottom of the groove. The weighing component is used to weigh the asphalt mixture falling from the discharge port into the groove.

[0022] In this embodiment, the opening adjustment mechanism consists of two partition plates 3 and two pairs of slide rails 6. By sliding the two partition plates 3 in a split manner, they can be moved away from or closer to each other, thereby controlling the opening size of the discharge port according to experimental requirements. Combined with the size reference of the first scale 7, the opening width of the discharge port can be controlled more precisely, thereby controlling the discharge time and speed, controlling the volume of falling asphalt mixture, and ensuring the accuracy of the experiment. The transparent material container 1 can intuitively display the arching effect of the asphalt mixture, which is convenient for in-depth research on the influence of gradation and asphalt grade on the arching effect of asphalt mixture. By observing the weight of the falling material, it is of great significance for studying the arching effect of granular mixtures, and provides a convenient experimental device for gradation optimization.

[0023] The slide rail can be a double-wheel slide rail.

[0024] Furthermore, in order to facilitate the movement of the partition 3 by pushing and pulling, a grip 4 is provided on the top of each partition 3. In practical applications, the grip 4 can be a handle or a pull ring, which is welded and fixed to the top of the partition 3.

[0025] Furthermore, to prevent the partition plate 3 from being pushed and pulled too fast, which could lead to an excessively large opening and errors, a friction layer is provided on the surface where the slide rail 6 contacts the partition plate 3. The friction layer is used to slow down the sliding speed of the partition plate 3, thereby achieving a more precise control process.

[0026] Furthermore, in order to facilitate observation of the volume of the asphalt mixture in the container 1, a vertically set second scale 2 is fixed on the outer wall of the container 1. The second scale 2 is used as a reference for the height of the asphalt mixture in the container 1.

[0027] Specifically, the weighing component includes an electronic weighing instrument 10, which is installed in the weighing trough and has a push-button switch 11 for easy operation.

[0028] Furthermore, in order to improve testing efficiency, a material holding plate 8 is placed on the electronic weighing instrument 10. The material holding plate 8 is replaceable, and multiple experiments can be conducted in a short time by using the material holding plate 8, saving steps such as cleaning and drying, and greatly improving the efficiency of the experiment.

[0029] In order to ensure that the two partition plates 3 can be tightly joined together when closed to prevent leakage of the asphalt mixture above and thus reduce the test accuracy, a self-contained pin-type slot 5 is provided between the two partition plates 3. Before the experiment, the two partition plates 3 are locked together by the self-contained pin-type slot 5 to prevent the two partition plates 3 from separating and causing leakage when the asphalt mixture is put into the container 1. When the experiment is conducted, the self-contained pin-type slot 5 is released from the locking function of the two partition plates 3, so that the two partition plates 3 can slide open and close.

[0030] The overall experimental operation steps of this utility model are as follows: First, arrange the device as follows... Figure 1 After assembling the entire assembly, ensure that the self-contained pin-type slot 5 can secure the two partition plates 3. Press the button switch 11 to turn on the electronic weighing instrument 10. Pour the asphalt mixture into the container 1 and let it stand for 10 minutes. Then, release the locking process of the self-contained pin-type slot 5. Grasp the handle 4 and pull the two partition plates 3 at both ends at a uniform speed. Observe the first scale 7 and gradually open the opening to 10cm. The asphalt mixture falls from the middle of the partition plates 3 into the material receiving plate 8. Close the two partition plates 3 again within 30 minutes. Observe the display of the electronic weighing instrument 10 and record the measurement data. Then, repeat the above experimental steps with asphalt mixtures of different gradations and asphalt grades to obtain the arching effect of asphalt mixtures with different gradations and asphalt grades.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An experimental apparatus for detecting the arching effect of asphalt mixtures, comprising a support base (9), wherein a groove is provided on the top of the support base (9), characterized in that, Also includes: The material container (1) is mounted above the support base (9). The material container (1) is made of transparent material. The material container (1) has a feeding port and a discharge port, and the discharge port is located in the middle of the groove. The material container (1) is used to hold asphalt mixtures of different gradations and asphalt grades. An opening adjustment mechanism is used to be set below the discharge port to adjust the opening size of the discharge port. The opening adjustment mechanism includes two partition plates (3) and two pairs of slide rails (6). The two partition plates (3) are horizontally symmetrically arranged on the left and right sides below the discharge port. Each pair of slide rails (6) is located on the front and rear sides of each partition plate (3). Both pairs of slide rails (6) are fixed on the top of the support base (9). The front and rear side walls of each partition plate (3) are slidably connected to each pair of slide rails (6). The first scale (7) is horizontally fixed on the top of the support base (9) and located on one side of the two partition plates (3) for reference of the opening width of the discharge port of the two partition plates (3); A weighing component is disposed at the bottom of the groove, and the weighing component is used to weigh the asphalt mixture falling from the discharge port into the groove.

2. The experimental apparatus for detecting the arching effect of asphalt mixtures according to claim 1, characterized in that, Each of the partition plates (3) is provided with a grip (4) at the top.

3. The experimental apparatus for detecting the arching effect of asphalt mixtures according to claim 2, characterized in that, The grip (4) is a handle or a pull ring.

4. The experimental apparatus for detecting the arching effect of asphalt mixtures according to claim 1, characterized in that, The slide rail (6) has a friction layer on the surface that contacts the partition plate (3), and the friction layer is used to slow down the sliding speed of the partition plate (3).

5. The experimental apparatus for detecting the arching effect of asphalt mixtures according to claim 1, characterized in that, A vertically set second scale (2) is fixed on the outer wall of the material container (1). The second scale (2) is used to reference the height of the asphalt mixture placed in the material container (1).

6. The experimental apparatus for detecting the arching effect of asphalt mixtures according to claim 1, characterized in that, The weighing assembly includes an electronic weighing instrument (10), which is installed in the weighing trough.

7. The experimental apparatus for detecting the arching effect of asphalt mixtures according to claim 6, characterized in that, The electronic weighing instrument (10) has a material holding plate (8) placed on it.

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