Method for detecting porosity of pervious concrete

Abstract

The invention provides a method for detecting the porosity of pervious concrete. A detection table, a metering barrel and a measuring cup are included, a supporting frame is installed at one end of the detection table, a sliding rail is arranged on one side of the supporting frame, a supporting plate is installed in the sliding rail, a threaded lifting rod is installed on the supporting plate, and the bottom of the threaded lifting rod is connected with a chassis; the other end of the detection table is provided with an embedding groove, and an electronic scale is installed in the embedding groove. Compared with the prior art, the porosity of the pervious concrete is detected through the automatic device, and the detection efficiency and the result accuracy are greatly improved. The complexity of manual operation and personal errors are reduced, and the reliability of a detection result is ensured. The detection repeatability is improved, a consistent result can be obtained in multiple times of detection, and the method is suitable for large-scale industrial application. The device and the method provided by the invention can realize rapid and accurate detection of the porosity of the pervious concrete, are simple and convenient to operate, are suitable for field application, and are beneficial to improving the detection stability of the pervious concrete.

Description

Technical Field

[0001] The invention relates to the technical field of porosity detection of permeable concrete, and in particular to a method for detecting porosity of permeable concrete. Background Art

[0002] Pervious concrete is a concrete material with high porosity, which is widely used in roads, squares, parking lots and other places. Its main advantage is that it can effectively promote rainwater infiltration, reduce urban waterlogging, and improve the urban heat island effect. However, the porosity of pervious concrete is a key factor affecting its water permeability. Therefore, accurate measurement of the porosity of pervious concrete is crucial to ensure its performance.

[0003] In the prior art, the methods for measuring the porosity of permeable concrete mainly include direct measurement and indirect measurement. The direct measurement method directly calculates the porosity by weighing, measuring volume, etc., which has the advantage of simple operation, but the measurement results are often not accurate enough due to reasons such as uneven pore distribution. The indirect measurement method usually uses penetration tests, CT scans, etc. to calculate the porosity using related physical or image processing methods. Although these methods can provide relatively accurate results, they are complex to operate, costly, and require high equipment, and are not suitable for rapid on-site detection.

[0004] Therefore, the existing methods for detecting the porosity of permeable concrete have the disadvantages of low measurement accuracy, complex operation, high cost and unsuitability for on-site detection. There is an urgent need for a fast and non-destructive detection device and method to meet practical application needs. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for detecting the porosity of permeable concrete, which can realize efficient and accurate detection of the porosity of permeable concrete, overcome many shortcomings in the prior art, and provide reliable technical support for the evaluation and quality control of permeable concrete performance.

[0006] The present invention provides a method for detecting the porosity of permeable concrete, comprising the following steps: Step 1: Weigh the initial state of the measuring cup using an electronic scale set on the testing table and record the initial weight; Step 2, measuring the volume of the permeable concrete sample to be tested; Step 3: Treat the permeable concrete sample to be tested to fully absorb water, then fill the permeable concrete sample into a measuring bucket and distribute it evenly; Step 4: Place the measuring bucket inside the measuring cup, place the measuring bucket on the filter plate, and adjust the position of the measuring bucket so that the filter hole at the bottom is aligned with the filter plate; Step 5. Place the measuring cup directly under the support plate; Step 6: Start the drive motor, and control the lifting and lowering of the threaded lifting rod by the drive motor, so that the bottom plate and the extension plate move vertically inside the metering barrel, squeeze the concrete sample in the metering barrel, and make the water inside the concrete sample overflow from inside and outside the metering barrel into the measuring cup; Step 7: Start the vibration component in the measuring cup to accelerate the drainage of the concrete sample through vibration; Step 8. After the concrete sample is fully filtered, weigh the measuring cup again, record the final weight, and calculate the porosity of the concrete sample based on the weight difference.

[0007] Compared with the prior art, the present invention has the following beneficial effects: The present invention detects the porosity of permeable concrete through an automated device, greatly improving the detection efficiency and the accuracy of the results. The complexity of manual operation and human errors are reduced, ensuring the reliability of the detection results. The repeatability of the detection is improved, and consistent results can be obtained in multiple tests, which is suitable for large-scale industrial applications. The device and method provided by the present invention can realize the rapid and accurate detection of the porosity of permeable concrete, are easy to operate, are suitable for on-site applications, and help improve the detection stability of permeable concrete.

[0008] Furthermore, a support frame is arranged at one end of the testing platform, a slide rail is arranged on the side of the support frame close to the testing platform, a support plate is installed in the slide rail, a threaded lifting rod is installed on the support plate, and the bottom of the threaded lifting rod is connected to the chassis; an embedding groove is arranged at the other end of the testing platform, and the electronic scale is installed in the embedding groove.

[0009] Furthermore, the driving motor is mounted on the supporting plate, and the output end of the driving motor is connected to the threaded lifting rod.

[0010] Furthermore, the expansion plate is sleeved on the bottom of the chassis, and a hole is opened on the expansion plate.

[0011] Furthermore, the dimensions of the base plate and the extension plate are adapted to the inner diameter of the metering barrel.

[0012] Furthermore, filter holes are provided at the bottom and lower part of the metering barrel, and scale lines are provided on the inner wall of the metering barrel for measuring the material content in the metering barrel and observing data changes.

[0013] Furthermore, a support block is arranged at the inner bottom of the measuring cup, a filter plate is arranged on the support block, and a vibration component is installed at the bottom of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of a device for detecting porosity of permeable concrete according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a measuring barrel and a measuring cup according to an embodiment of the present invention; Figure 3 A top view of a measuring barrel and a measuring cup according to an embodiment of the present invention; The markings in the figure are: 1. Testing table; 2. Support frame; 3. Slide rail; 4. Support plate; 5. Driving motor; 6. Threaded lifting rod; 7. Chassis; 8. Extension plate; 9. Measuring barrel; 901. Filter hole; 10. Measuring cup; 1001. Support block; 1002. Filter plate; 1003. Vibration assembly; 11. Embedded slot; 12. Electronic scale. DETAILED DESCRIPTION

[0015] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific implementation methods, but the present invention is not limited thereto.

[0016] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" or "laid on" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0017] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0019] See also Figures 1 to 3The present invention provides a device for detecting the porosity of permeable concrete, including a detection platform 1, a measuring bucket 9 and a measuring cup 10. A support frame 2 is fixedly installed at one end of the detection platform 1, and a slide rail 3 is arranged on the side of the support frame 2 close to the detection platform 1. A support plate 4 is installed in the slide rail 3, and the support plate 4 can move up and down along the slide rail 3. A threaded lifting rod 6 is installed on the support plate 4, and a driving motor 5 is arranged at the top of the threaded lifting rod 6. The output end of the driving motor 5 is connected to the threaded lifting rod 6, and the driving motor 5 is installed on the support plate 4. A chassis 7 is connected to the bottom of the threaded lifting rod 6, and an expansion plate 8 is sleeved on the bottom of the chassis 7, and a hole is opened on the expansion plate 8. The size of the chassis 7 and the expansion plate 8 is adapted to the inner diameter of the measuring bucket 9, and the chassis 7 and the expansion plate 8 move vertically inside the measuring bucket 9.

[0020] The metering barrel 9 is arranged below the support plate 4. The interior of the metering barrel 9 is used to fill the concrete sample to be tested. The bottom and lower part of the metering barrel 9 are provided with filter holes 901. The inner wall of the metering barrel 9 is provided with scale lines for measuring the material content in the metering barrel 9 and observing the data changes. The metering barrel 9 is placed inside the measuring cup 10. A support block 1001 is arranged at the inner bottom of the measuring cup 10. A filter plate 1002 is arranged on the support block 1001. A vibration assembly 1003 is installed at the bottom of the filter plate 1002. The vibration assembly 1003 is used to drive the metering barrel 9 to vibrate on the filter plate 1002. An embedding groove 11 is arranged at the other end of the testing platform 1. An electronic scale 12 is installed in the embedding groove 11. The size of the electronic scale 12 is adapted to the bottom size of the measuring cup 10. The electronic scale 12 is used to weigh the measuring cup 10.

[0021] In some embodiments, a rack track is provided in the slide rail 3, a gear is provided at one end of the support plate 4, the gear of the support plate 4 is meshed with the rack in the slide rail 3, and a servo motor is also provided on the support frame 2 to drive the support plate 4 to move up and down.

[0022] The method for using the device for detecting porosity of permeable concrete of the present invention comprises the following steps: Step 1: weigh the measuring cup 10 in its initial state using the electronic scale 12 and record the initial weight; Step 2, measuring the volume of the permeable concrete sample to be tested; In some embodiments, the concrete sample is a solid sample with a regular geometric shape, and the sample volume can be measured directly according to the size of the geometric shape.

[0023] In some embodiments, the concrete sample is a small particle sample, and the sample volume is measured by a measuring cylinder, a measuring cup, or the like.

[0024] In some embodiments, the concrete sample is an irregularly shaped sample, and the sample volume is indirectly calculated by measuring the sample mass and density.

[0025] Step 3: Treat the permeable concrete sample to be tested to fully absorb water, then fill the permeable concrete sample into the measuring bucket 9 and distribute it evenly; In some embodiments, the concrete sample to be tested is dried to remove moisture on the surface and inside of the sample, the dried concrete sample is completely immersed in water to fully absorb water, and then the concrete sample is filled into the measuring bucket 9.

[0026] Step 4: Place the measuring barrel 9 inside the measuring cup 10, and place the measuring barrel 9 on the filter plate 1002, and adjust the position of the measuring barrel 9 so that the filter hole 901 at the bottom is aligned with the filter plate 1002; Step 5: Place the measuring cup 10 directly below the support plate 4; Step 6: Start the driving motor 5, and control the lifting and lowering of the threaded lifting rod 6 by the driving motor 5, so that the bottom plate 7 and the expansion plate 8 move vertically inside the measuring barrel 9, squeeze the concrete sample in the measuring barrel 9, and make the water inside the concrete sample overflow from inside and outside the measuring barrel 9 into the measuring cup 10; Step 7: Start the vibration component 1003 in the measuring cup 10 to accelerate the drainage of the concrete sample through vibration; Step 8: After the concrete sample is fully filtered, weigh the measuring cup 10 again, record the final weight, and calculate the porosity of the concrete sample based on the weight difference.

[0027] The calculation formula of porosity is: Porosity = (final weight of measuring cup - initial weight of measuring cup) / (density of water * sample volume) * 100%.

[0028] Compared with the prior art, the present invention has the following beneficial effects: The present invention detects the porosity of permeable concrete through an automated device, greatly improving the detection efficiency and the accuracy of the results. The complexity of manual operation and human errors are reduced, ensuring the reliability of the detection results. The repeatability of the detection is improved, and consistent results can be obtained in multiple tests, which is suitable for large-scale industrial applications. The device and method provided by the present invention can realize the rapid and accurate detection of the porosity of permeable concrete, are easy to operate, are suitable for on-site applications, and help improve the detection stability of permeable concrete.

[0029] Finally, it should be noted that the above-listed embodiments are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. A method for detecting porosity of permeable concrete, characterized in that: The steps include: Step 1: weigh the measuring cup (10) in its initial state by using an electronic scale (12) set on the testing platform (1), and record the initial weight; Step 2, measuring the volume of the permeable concrete sample to be tested; Step 3: Treat the permeable concrete sample to be tested to fully absorb water, then fill the permeable concrete sample into the measuring bucket (9) and distribute it evenly; Step 4: Place the measuring barrel (9) inside the measuring cup (10), place the measuring barrel (9) on the filter plate (1002), and adjust the position of the measuring barrel (9) so that the filter hole (901) at the bottom is aligned with the filter plate (1002); Step 5: Place the measuring cup (10) directly below the support plate (4); Step 6: Start the drive motor (5), and control the lifting and lowering of the threaded lifting rod (6) by the drive motor (5), so that the bottom plate (7) and the extension plate (8) move vertically inside the measuring barrel (9), squeeze the concrete sample in the measuring barrel (9), and make the water inside the concrete sample overflow from inside and outside the measuring barrel (9) into the measuring cup (10); Step 7, start the vibration component (1003) in the measuring cup (10) to accelerate the drainage of the concrete sample through vibration; Step 8: After the concrete sample is fully filtered, weigh the measuring cup (10) again, record the final weight, and calculate the porosity of the concrete sample based on the weight difference.

2. The method for detecting porosity of permeable concrete according to claim 1, characterized in that: A support frame (2) is arranged at one end of the testing platform (1); a slide rail (3) is arranged on a side of the support frame (2) close to the testing platform (1); a support plate (4) is installed in the slide rail (3); a threaded lifting rod (6) is installed on the support plate (4); and the bottom of the threaded lifting rod (6) is connected to a chassis (7); an embedding groove (11) is arranged at the other end of the testing platform (1); and an electronic scale (12) is installed in the embedding groove (11).

3. The method for detecting porosity of permeable concrete according to claim 1, characterized in that: The driving motor (5) is mounted on the supporting plate (4), and the output end of the driving motor (5) is connected to the threaded lifting rod (6).

4. The method for detecting porosity of permeable concrete according to claim 1, characterized in that: The expansion plate (8) is sleeved on the bottom of the base plate (7), and a hole is formed on the expansion plate (8).

5. The method for detecting porosity of permeable concrete according to claim 1, characterized in that: The dimensions of the base plate (7) and the expansion plate (8) are adapted to the inner diameter of the metering barrel (9).

6. The method for detecting porosity of permeable concrete according to claim 1, characterized in that: The bottom and lower part of the metering barrel (9) are both provided with filtering holes (901), and the inner wall of the metering barrel (9) is provided with scale lines.

7. The method for detecting porosity of permeable concrete according to claim 1, characterized in that: A support block (1001) is arranged at the inner bottom of the measuring cup (10), a filter plate (1002) is arranged on the support block (1001), and a vibration component (1003) is installed at the bottom of the filter plate (1002).

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