Quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning

Abstract

The utility model relates to a quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning, and belongs to the technical field of building material detection. The garbage can comprises a cylindrical can body with a cover, wherein the side surface part of the can body is hollowed; a cross-shaped guide rail is arranged on the inner surface of an upper cover of the cylindrical can body with the cover, the straight-barrel-type electric telescopic rod is connected with a sliding block of the cross-shaped guide rail, and a hook is arranged at the bottom of the straight-barrel-type electric telescopic rod. A semi-ring-shaped guide rail is arranged on the inner wall of the cylindrical can body with the cover, the U-shaped clamp is connected with a sliding block of the semi-ring-shaped guide rail through a transverse connecting rod, and the non-contact three-dimensional laser scanner is clamped in the U-shaped clamp. The bottom of the cylindrical barrel body with the cover is provided with two constant-temperature electric heating furnaces which are distributed at an interval, and the two constant-temperature electric heating furnaces are respectively provided with a beaker. The asphalt-aggregate adhesion performance evaluation test device can simplify the steps of the asphalt-aggregate adhesion performance evaluation test, improves the defects in the original test evaluation method, and can better adapt to the engineering characteristic evaluation of the asphalt in the construction site environment.

Description

Technical Field

[0001] The utility model relates to a quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning, belonging to the technical field of building material detection. Background Art

[0002] Asphalt is a very important geotechnical material and is widely used in road engineering and building waterproofing projects. Asphalt pavement is the main form of road surface structure in highways. It is paved with asphalt mixture. Asphalt acts as a binder, and binds mineral aggregates of a certain graded composition into a whole to jointly bear the road load. Its adhesion performance is an important factor affecting the stability of asphalt pavement, so it is particularly important to detect the adhesion strength of the interface between asphalt and aggregate. At present, the water boiling method and water immersion method are commonly used to evaluate the adhesion performance of aggregates, but the steps are cumbersome and complicated, not concise enough, and can only qualitatively evaluate its adhesion. The utility model can quantitatively evaluate the adhesion of asphalt-aggregate mixtures with relatively simple test steps to solve the shortcomings of the current water boiling method and water immersion method tests. Summary of the Invention

[0003] The purpose of the utility model is to provide a quantitative analysis device for the adhesion performance of the asphalt-aggregate mixture interface based on three-dimensional scanning, so as to solve the defects of the current water boiling method and water immersion method, such as the test steps are not simple enough and the evaluation of the adhesion performance of the asphalt-aggregate mixture is relatively subjective, and to provide a more convenient and quick test device for the quality inspection of asphalt pavement materials and the evaluation of engineering properties in actual engineering.

[0004] The technical solution of the utility model is as follows:

[0005] A quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning, comprising a cylindrical barrel with a cover and a partially hollowed-out side;

[0006] A cross-shaped guide rail is provided on the inner surface of the upper cover of the cylindrical barrel with a cover, a straight-tube electric telescopic rod is connected to a slider of the cross-shaped guide rail, and a hook is provided at the bottom of the straight-tube electric telescopic rod;

[0007] A semi-annular guide rail is provided on the inner wall of the cylindrical barrel with a cover, and a U-shaped clamp is connected to a slider of the semi-annular guide rail via a transverse connecting rod, and the non-contact three-dimensional laser scanner is clamped in the U-shaped clamp;

[0008] The bottom of the cylindrical barrel with a cover is provided with two spaced-apart constant-temperature electric heating furnaces, and a beaker is respectively provided on the two constant-temperature electric heating furnaces.

[0009] Furthermore, the U-shaped clamp includes a back plate and two side plates, wherein one side plate is a pulling telescopic structure for clamping the non-contact three-dimensional laser scanner.

[0010] Furthermore, the connecting rod adopts a spherical universal connection structure, one end of which is connected to the back plate of the U-shaped clamp, and the other end is connected to the slider of the semi-annular guide rail.

[0011] Furthermore, the hollow portion of the cylindrical barrel with a lid faces the semi-annular guide rail, and the barrel portion is open.

[0012] Furthermore, the top of the straight-cylinder electric telescopic rod is connected to a slider on one of the cross-shaped guide rails through a flat bottom plate. This track is parallel to the line connecting the two ends of the semi-annular guide rail, and the line connecting the two constant temperature electric heating furnaces is also parallel to the line connecting the two ends of the semi-annular guide rail 7.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model adopts a non-contact three-dimensional laser scanner to collect three-dimensional data of aggregates, making the volume calculation results more accurate and rapid.

[0015] (2) The degree of asphalt film peeling on the aggregate surface obtained by the water boiling method or the water immersion method in the present invention is calculated by reverse engineering software, thereby eliminating the interference of human factors in the adhesion grade assessment.

[0016] (3) The utility model can quantitatively evaluate the adhesion of asphalt-aggregate mixtures with simple test steps, and is suitable for quality inspection and engineering property evaluation of various types of asphalt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is an enlarged view of the local structure of the upper half of the barrel body of the utility model;

[0019] Figure 3 It is an enlarged view of the local structure of the utility model;

[0020] Figure 4 This is an enlarged view of the U-shaped clamp of the present utility model;

[0021] The numbers in the figure are: 1-cylindrical barrel with cover, 2-cross guide rail, 3-straight electric telescopic rod, 4-non-contact 3D laser scanner, 5-U-clamp, 6-connecting rod, 7-semi-ring guide rail, 8-hook, 9-beaker, 10-constant temperature electric heating furnace. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the scope of the drawings.

[0023] Example 1: Figures 1 to 3As shown, a quantitative analysis device for the interfacial adhesion performance of asphalt mixture based on three-dimensional scanning comprises a cylindrical barrel 1 with a cover and a partially hollowed side surface;

[0024] The inner surface of the upper cover of the cylindrical barrel body 1 is provided with a cross-shaped guide rail 2, a straight-tube electric telescopic rod 3 is connected to the slider of the cross-shaped guide rail 2, and a hook 8 is provided at the bottom of the straight-tube electric telescopic rod 3;

[0025] A semi-annular guide rail 7 is provided on the inner wall of the cylindrical barrel body 1 with a lid. A U-shaped clamp 5 is connected to a slider of the semi-annular guide rail 7 via a transverse connecting rod 6. The non-contact three-dimensional laser scanner 4 is clamped in the U-shaped clamp 5.

[0026] The bottom of the cylindrical barrel body 1 with a cover is provided with two spaced-apart constant-temperature electric heating furnaces 10 , and a beaker 9 is respectively provided on the two constant-temperature electric heating furnaces 10 .

[0027] like Figure 4 As shown, the U-shaped clamp 5 includes a back plate and two side plates, one of which is a pulling telescopic structure for clamping. When clamping, the side plate is pulled out, and then the non-contact three-dimensional laser scanner 4 is placed between the two side plates, and the pulled-out side plate is pushed back until the non-contact three-dimensional laser scanner 4 is clamped firmly.

[0028] Specifically, the connecting rod 6 adopts a spherical universal connection structure, one end of which is connected to the back plate of the U-shaped clamp 5, and the other end of which is connected to the slider of the semi-annular guide rail 7.

[0029] Specifically, such as Figure 1 As shown, the diameter of the line connecting the two ends of the semi-annular guide rail 7 is consistent with that of the cylindrical covered barrel body 1. The hollowed-out portion of the cylindrical covered barrel body 1 faces the semi-annular guide rail 7, and the barrel body portion thereof is open, that is, half of the barrel body of the cylindrical covered barrel body 1 is open and the other half is closed, which facilitates operation. The cylindrical covered barrel body 1 can be made of steel. The semi-annular guide rail 7 and the cross-shaped guide rail 2 are both made of aluminum alloy. The top of the straight-cylinder electric telescopic rod 3 is connected to a slider on one of the tracks of the cross-shaped guide rail 2 via a flat bottom plate. This track is parallel to the line connecting the two ends of the semi-annular guide rail 7. The sum of the telescopic travel of the straight-cylinder electric telescopic rod 3 and the main body length is no less than 1 / 3 of the height of the cylindrical covered barrel body 1.

[0030] The line connecting the two constant-temperature electric furnaces 10 is also parallel to the line connecting the two ends of the semi-annular guide rail 7. The bottoms of the constant-temperature electric furnaces 10 are bonded to both sides of the lower base and upper surface of the cylindrical covered barrel 1 using Ergo 9900 structural adhesive. The diameter of the constant-temperature electric furnaces 10 is no greater than 1 / 2 the diameter of the cylindrical covered barrel 1, and the height is no greater than 1 / 5 the height of the cylindrical covered barrel 1. The distance between them is no less than 100 mm. The beaker 9 placed on the constant-temperature electric furnaces 10 has a capacity of 1000 mL.

[0031] The working process of the device of this embodiment is as follows: First, the cleaned raw aggregate is tied firmly in the middle with a thin wire, tied to the end of the wire, and the other end is fastened to a hook 8, which can be a C-shaped hook. The straight-cylinder electric telescopic rod 3 is controlled to place the aggregate in the air above the beaker. The non-contact 3D laser scanner 4 performs the first 3D scan to obtain high-density point cloud data. The point cloud processing software Geomagic Control is used to process the data to obtain a surface model. The model editing software Materialise Magics edits and calculates the surface area, volume and other data; puts an appropriate amount of asphalt with a preheating temperature not exceeding 150°C into the 1000mL beaker 9 on the left, turns on the constant temperature electric furnace 10 on the left, controls the furnace temperature to maintain the asphalt temperature in the cup at around 150°C, controls the straight electric telescopic rod 3 to move to the top of the beaker by controlling the slider of the cross guide 2, controls the straight electric telescopic rod 3 to place the aggregate in the asphalt, and after it is placed for a period of time and the aggregate is completely covered by the asphalt film, turns off the constant temperature electric furnace 10, controls the straight electric telescopic rod 3 to place the asphalt-aggregate just above the beaker, waits for the asphalt to drip clean and hangs for a certain period of time, and then performs a second 3D scan with the non-contact 3D laser scanner 4 to obtain high-density point cloud data. The data is processed using the point cloud processing software Geomagic Control to obtain a surface model, and then the model editing software Materialise is used to process the data. Magics edits and calculates the surface area, volume and other data; puts an appropriate amount of pure water in the 1000mL beaker 9 on the right, turns on the constant temperature electric heating furnace 10 on the right, controls the furnace temperature so that the pure water in the cup is maintained at a temperature close to a slightly boiling state without boiling bubbles, and then controls the slider of the cross-shaped guide rail 2 to move the straight-cylinder electric telescopic rod 3 to the top of the beaker, controls the straight-cylinder electric telescopic rod 3 to place the asphalt-aggregate in the water, and after a period of time, turns off the constant temperature electric heating furnace 10, controls the straight-cylinder electric telescopic rod 3 to place the asphalt-aggregate directly above the beaker, waits for the surface moisture to dry and hangs for a certain period of time, and then performs a third 3D scan with the non-contact 3D laser scanner 4 to obtain high-density point cloud data. The data is processed using the point cloud processing software Geomagic Control to obtain a surface model, and then the model editing software Materialise is used to process the data. Magics edits and calculates the surface area, volume and other data; finally, the obtained surface area, volume and other data are compared and analyzed with reference to the water boiling test details in the "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering". The asphalt peeling degree is obtained based on different surface area ratios and volume ratios to quantitatively evaluate the asphalt-aggregate adhesion performance and obtain the asphalt adhesion grade.

Claims

1. A quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning, characterized in that: It comprises a cylindrical barrel body (1) with a cover and a hollowed-out side portion; The inner surface of the upper cover of the cylindrical barrel body (1) with a cover is provided with a cross-shaped guide rail (2), a straight-tube electric telescopic rod (3) is connected to a slider of the cross-shaped guide rail (2), and a hook (8) is provided at the bottom of the straight-tube electric telescopic rod (3); A semi-annular guide rail (7) is provided on the inner wall of the cylindrical barrel body (1) with a cover, a U-shaped clamp (5) is connected to a slider of the semi-annular guide rail (7) via a transverse connecting rod (6), and a non-contact three-dimensional laser scanner (4) is clamped in the U-shaped clamp (5); The bottom of the cylindrical barrel body (1) with a cover is provided with two spaced-apart constant-temperature electric heating furnaces (10), and a beaker (9) is respectively provided on the two constant-temperature electric heating furnaces (10).

2. The quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning according to claim 1 is characterized in that: The U-shaped clamp (5) comprises a back plate and two side plates, wherein the one side plate is a pulling and telescopic structure for clamping the non-contact three-dimensional laser scanner (4).

3. The quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning according to claim 1 is characterized in that: The connecting rod (6) adopts a spherical universal connection structure, one end of which is connected to the back plate of the U-shaped clamp (5), and the other end of which is connected to the slider of the semi-annular guide rail (7).

4. The quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning according to claim 1 is characterized in that: The hollowed-out portion of the cylindrical barrel body (1) with a cover faces the semi-annular guide rail (7), and the barrel body portion is open.

5. The quantitative analysis device for asphalt mixture interface adhesion performance based on three-dimensional scanning according to claim 1 is characterized in that: The top of the straight-tube electric telescopic rod (3) is connected to a slider on a track of the cross-shaped guide rail (2) through a flat bottom plate. This track is parallel to the line connecting the two ends of the semi-circular guide rail (7). The line connecting the two constant-temperature electric heating furnaces (10) is also parallel to the line connecting the two ends of the semi-circular guide rail (7).

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