A device for detecting water permeability of asphalt mixture

Abstract

The utility model discloses a kind of detection devices of asphalt mixture water permeability. Including by upper and lower sequentially upper and lower assembly arrangement first module, second module and third module;One cylindrical test piece vertical test water storage tank and one cuboid test piece horizontal test water storage tank are respectively opened in the vertical direction of first module, for water storage and for the water supply of second module;Second module is opened in the corresponding position of test piece vertical test water storage tank Cylindrical test piece vertical test placement groove, for vertically placing test piece;Second module is opened in the corresponding position of test piece horizontal test water storage tank Cuboid test piece horizontal test placement groove, for horizontally placing test piece;Water storage area is provided in third module, for storing water outflowing by second module.The utility model can be used to test the water permeability of asphalt mixture test piece vertical direction and horizontal direction.

Description

Technical Field

[0001] This utility model belongs to the field of road engineering technology, specifically relating to a device for testing the permeability of asphalt mixtures. Background Technology

[0002] The permeability of asphalt mixtures is a crucial performance characteristic, typically expressed as the amount of water passing through per unit time. The vertical and lateral void structures of asphalt mixtures differ, resulting in variations in their vertical and lateral permeability. Currently, permeability testing is primarily conducted in the field; it is difficult to simultaneously test both vertical and lateral permeability in a laboratory setting. Utility Model Content

[0003] To address the above technical problems, this utility model proposes a testing device for the permeability of asphalt mixtures, which consists of a first module, a second module, a third module, a water-blocking plate I, and a water-blocking plate II. It is easy to assemble and disassemble, the modules are simple, and the testing is quick. It can simultaneously test the vertical and lateral permeability of asphalt mixture specimens.

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

[0005] The present invention provides a device for testing the permeability of asphalt mixtures, comprising a first module, a second module, and a third module arranged vertically from top to bottom.

[0006] The first module has a cylindrical vertical test water storage tank and a rectangular horizontal test water storage tank for storing water and supplying water to the second module.

[0007] The second module has a cylindrical vertical test placement slot corresponding to the vertical test water tank for vertically placing the test specimen; and a cuboid horizontal test placement slot corresponding to the horizontal test water tank for horizontally placing the test specimen.

[0008] The third module has an internal water storage area for storing the water flowing out of the second module.

[0009] The vertical test water tank has a horizontal water baffle slot I at the bottom for inserting a water baffle I; the horizontal test water tank has a horizontal water baffle slot II at the bottom for inserting a water baffle II; the water flow in the vertical test water tank and the horizontal test water tank is cut off to the second module by inserting water baffle I and water baffle II respectively.

[0010] The first module has a raised groove I around its rectangular bottom surface; the second module has a recess I around its rectangular top surface that matches the raised groove I and has a corresponding size; the second module has a raised groove II around its rectangular bottom surface that matches the recess I and has a corresponding size; the third module has a recess II around its rectangular top surface that matches the raised groove II and has a corresponding size.

[0011] The water tank for vertical testing of specimens in the first module has the same inner diameter as the vertical testing tank for specimens in the second module and is connected vertically; the water tank for horizontal testing of specimens in the first module has the same inner diameter as the horizontal testing tank for specimens in the second module and is connected vertically.

[0012] Both the vertical and horizontal test tanks for the specimens have scale lines drawn on their surfaces.

[0013] The first, second, and third modules are all made of transparent material to facilitate observation of the scale lines.

[0014] A circular limiting flange I is provided at the bottom of the inner wall of the vertical test placement groove for the specimen. The inner diameter of the limiting flange I is smaller than the inner diameter of the vertical test placement groove for the specimen. A square limiting flange II is provided in the middle of the inner wall of the horizontal test placement groove for the specimen. A horizontal plate is provided at the bottom. Multiple second module drainage holes are provided through the horizontal plate.

[0015] The limiting flange I is used to hold the bottom of the vertically placed specimen to prevent it from falling; the limiting flange II is used to hold the horizontally placed (i.e., lying flat on its side) specimen from the middle; and the horizontal plate is used to hold the specimen from the bottom to prevent it from falling.

[0016] The water storage area of ​​the third module has multiple drainage holes that penetrate the side wall. Water that seeps out of the second module flows into the water storage area and is discharged through the drainage holes of the third module.

[0017] The beneficial effects of this utility model are:

[0018] Most existing devices can only test the vertical or lateral permeability of asphalt mixtures individually, and cannot test them simultaneously. This device is easy to assemble and disassemble, has simple modules, and allows for quick testing. It can simultaneously test the vertical and lateral permeability of asphalt mixture specimens. Attached Figure Description

[0019] Figure 1 This is a schematic diagram and perspective view of the entire detection device.

[0020] Figure 2 This is a schematic diagram and cross-sectional view of the first module in the device at various angles.

[0021] Figure 3This is a schematic diagram and cross-sectional view of the second module in the device at various angles.

[0022] Figure 4 This is a schematic diagram and cross-sectional view of the third module in the device at various angles.

[0023] Figure 5 This is a schematic diagram of baffle plate I and baffle plate II in the device.

[0024] Figure 6 This is a schematic diagram showing the specimens placed vertically and horizontally.

[0025] In the diagram: Module 1 (01), Module 2 (02), Module 3 (03), Water baffle slot I (0101), Water baffle slot II (0102), Water baffle I (04), Water baffle II (05), Vertical test water tank for specimen (0103), Horizontal test water tank for specimen (0104), Drainage hole of Module 2 (0205), Vertical test placement slot for specimen (0206), Horizontal test placement slot for specimen (0207), Water storage area (0303), Drainage hole of Module 3 (0302), Groove I (0105), Groove II (0202), Recess I (0201), Recess II (0301), Limiting flange I (0203), Limiting flange II (0204) Detailed Implementation

[0026] This utility model provides a device for testing the permeability of asphalt mixtures, such as... Figure 1 As shown, the device consists of a first module, a second module, a third module, a water baffle I, and a water baffle II.

[0027] The further defined technical solution of this utility model is:

[0028] like Figure 2 As shown, the first module is a cuboid made of transparent material. Vertically, it has a cylindrical vertical test water tank and a cuboid horizontal test water tank. The lower part of the first module has two water-blocking slots, I and II, both penetrating opposite sidewalls. Water-blocking slot I cuts through the vertical test water tank, and water-blocking slot II cuts through the horizontal test water tank. Bottom grooves are formed around the rectangular bottom surface of the first module. Vertical test groove scale lines are drawn on the surface of the transparent outer wall of the vertical test water tank, and horizontal test groove scale lines are drawn on the surface of the transparent outer wall of the horizontal test water tank.

[0029] like Figure 3As shown, the second module is a cuboid with a top rectangular plane having a top groove around its perimeter and a bottom rectangular plane having a bottom groove around its perimeter. The second module contains a cylindrical vertical test placement slot and a cuboid horizontal test placement slot. The former has the same inner diameter as the vertical test water storage tank, while the latter has the same top and bottom opening dimensions as the horizontal test water storage tank. The inner wall of the vertical test placement slot has an annular limiting flange I, the inner diameter of which is smaller than the inner diameter of the vertical test placement slot. The inner wall of the horizontal test placement slot has a square-shaped limiting flange II. Multiple cylindrical second module drainage holes are provided through the bottom of the horizontal test placement slot.

[0030] like Figure 4 As shown, the third module has a rectangular shape with a rectangular water storage area inside. Three equally spaced drainage holes, penetrating the bottom of one side wall of the third module, are located there. A top groove is formed around the perimeter of the rectangular top plane of the third module.

[0031] like Figure 5 As shown, the water baffle I and water baffle II described herein are cuboids in appearance. After they are inserted into water baffle slot I and water baffle slot II respectively, their dimensions should be the same.

[0032] The first module is located at the top of the device, the second module is in the middle, and the third module is at the bottom. Water baffle I and water baffle II are inserted into water baffle slot I. The bottom protrusion of the first module mates perfectly with the top groove of the second module, and the bottom protrusion of the second module mates perfectly with the top groove of the third module.

[0033] Example:

[0034] This embodiment describes the applicable method of this testing device. Using this device, the vertical permeability and lateral permeability of an asphalt mixture are tested simultaneously according to the following steps.

[0035] S1. Assemble the third test block and the second test block by connecting them top to bottom.

[0036] S2, such as Figure 6 As shown, a cylindrical asphalt mixture specimen of suitable size is placed vertically in the vertical test placement groove, with the bottom surface of the specimen coinciding with the top surface of the limiting flange I. The side surface of the specimen coincides with the inner wall of the vertical test placement groove, and the gap between the side surface of the specimen and the inner wall of the vertical test placement groove is sealed with a waterproof material to ensure that this area is impermeable during testing.

[0037] S3, such as Figure 6As shown, a cylindrical asphalt mixture specimen of suitable size is placed horizontally in the specimen horizontal test placement groove, with the side of the specimen coinciding with the inner wall of the limiting flange II, precisely holding the specimen in place. A waterproof material is used to seal the gap between the side of the specimen and the inner wall of the limiting flange II to ensure that this area is impermeable during testing.

[0038] S4. Further assemble the first test block onto the top of the second test block, insert the water baffle I into the water baffle slot I, insert the water baffle II into the water baffle slot II, and fill the vertical test water tank and the horizontal test water tank of the test specimen with water.

[0039] S5. After the test begins, completely remove baffle plate I and baffle plate II, allowing water to flow from the vertical test water tank into the vertical test placement tank and from the horizontal test water tank into the horizontal test placement tank. Once both tanks are full, calculate the amount of water lost over a certain time based on the liquid level drop indicated by the scale lines in the vertical and horizontal test tanks, combined with the horizontal cross-sectional dimensions of the tanks. This yields the amount of water flowing vertically and laterally through the asphalt mixture specimen per unit time, representing the vertical and lateral permeability of the tested asphalt mixture specimen.

Claims

1. A device for testing the permeability of asphalt mixtures, characterized in that: It includes the first module (01), the second module (02) and the third module (03) arranged vertically from top to bottom. The first module (01) has a cylindrical vertical test water storage tank (0103) and a rectangular horizontal test water storage tank (0104) for storing water and supplying water to the second module (02). The second module (02) has a cylindrical vertical test placement slot (0206) corresponding to the vertical test water tank (0103) for vertically placing the test specimen; and a cuboid horizontal test placement slot (0207) corresponding to the horizontal test water tank (0104) for horizontally placing the test specimen. The third module (03) has a water storage area (0303) inside, which is used to store the water flowing out of the second module (02).

2. The device for testing the permeability of asphalt mixtures according to claim 1, characterized in that, The test specimen has a vertical test water tank (0103) with a horizontal water baffle slot I (0101) at the bottom for inserting water baffle I (04); The lower part of the test specimen horizontal test water tank (0104) has a water baffle slot II (0102) for horizontally inserting water baffle II (05); The water flow in the vertical test water tank (0103) and the horizontal test water tank (0104) of the specimen is cut off to the second module by inserting water baffle I (04) and water baffle II (05) respectively.

3. The device for testing the permeability of asphalt mixtures according to claim 1, characterized in that, The bottom rectangular base of the first module (01) is provided with a groove I (0105) around its perimeter. The second module (02) has a rectangular top surface with grooves (0201) around its perimeter that fit the upper and lower parts of the protrusion I (0105) and are of the same size. The bottom rectangular bottom surface of the second module (02) is provided with protrusions II (0202) that fit with groove I (0201) and are of the same size. The top rectangular surface of the third module (03) is provided with grooves II (0301) around its perimeter that fit with the protrusions II (0202) and are of the same size.

4. The device for testing the permeability of asphalt mixtures according to claim 1, characterized in that, The specimen vertical test water storage tank (0103) of the first module (01) and the specimen vertical test placement tank (0206) of the second module (02) have the same inner diameter and are connected vertically; The specimen horizontal test water tank (0104) of the first module (01) and the specimen horizontal test placement tank (0207) of the second module (02) have the same inner diameter and are connected vertically.

5. The device for testing the permeability of asphalt mixtures according to claim 1, characterized in that, The surfaces of both the vertical test water tank (0103) and the horizontal test water tank (0104) of the specimen are marked with scale lines.

6. The device for testing the permeability of asphalt mixtures according to claim 1, characterized in that, The first module (01), the second module (02) and the third module (03) are all made of transparent material.

7. The device for testing the permeability of asphalt mixtures according to claim 1, characterized in that, A circular limiting flange I (0203) is provided at the bottom of the inner wall of the vertical test placement groove (0206) for the specimen. The inner diameter of the limiting flange I (0203) is smaller than the inner diameter of the vertical test placement groove (0206) for the specimen. The inner wall of the specimen horizontal test placement groove (0207) is provided with a square frame-shaped limiting flange II (0204), and a horizontal plate is provided at the bottom. Multiple second module drainage holes (0205) are opened through the horizontal plate.

8. The device for testing the permeability of asphalt mixtures according to claim 7, characterized in that, The limiting flange I (0203) is used to hold the bottom of the vertically placed specimen to prevent the specimen from falling. The limiting flange II (0204) is used to hold the horizontally placed specimen in place from the middle, and the horizontal plate is used to hold the specimen from the bottom to prevent the specimen from falling.

9. The device for testing the permeability of asphalt mixtures according to claim 1, characterized in that, The water storage area (0303) of the third module (03) is provided with multiple third module drainage holes (0302) that penetrate the side wall. Water that seeps out of the second module (02) flows into the water storage area (0303) and is discharged through the third module drainage holes (0302).

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