A water permeable simulation device for water permeable concrete

Abstract

The application discloses a water-permeable concrete water-permeable simulation device, and relates to the field of water-permeable concrete simulation tests.The device comprises a test table and an electric control assembly.The test table is connected with a receiving table.The receiving table is connected with a pressure-bearing table which is composed of a plurality of sampling boxes.The pressure-bearing table is connected with a water-spraying platform.The water-spraying platform is connected with a hydraulic cylinder one.The hydraulic cylinder one is connected with the test table.A cutting assembly is connected with the pressure-bearing table.The pressure-bearing table is connected with a stacking assembly which can stack the cut concrete samples in the vertical direction to test the water permeability of the multi-layer concrete samples.The device has the advantages that the whole water-permeable concrete can be divided and detected respectively, so that the detection efficiency and the accuracy of the water permeability detection are improved.The stacking assembly can simulate and estimate the concrete of different thicknesses, so that the approximate value of the water permeability is obtained, and the thickness selection is facilitated.

Description

Technical Field

[0001] This invention relates to the field of testing technology for permeable concrete, and more particularly to a permeability simulation device for permeable concrete. Background Technology

[0002] Permeable concrete, also known as porous concrete, is a type of porous lightweight concrete made by mixing aggregates, cement, and water. Because it does not contain fine aggregates, but rather coarse aggregates coated with a thin layer of cement paste and bonded together, it has a uniform honeycomb structure.

[0003] In the use of permeable concrete, its permeability coefficient needs to be tested. Existing technologies typically use repeated tests with samples of the same thickness. However, this method has drawbacks. After testing, the sample needs to be removed from the testing device, the seal between the sample and the device needs to be broken, and the device needs to be cleaned to prevent contamination and blockage by water and impurities from the sample, thus affecting subsequent testing. This requires multiple cleanings, which is cumbersome. Furthermore, existing technologies cannot individually test the permeability of each segmented sample of a large area of ​​permeable concrete, resulting in inaccurate results. They also cannot simulate and estimate the permeability of concrete of different thicknesses after testing the permeability of a unit thickness. In practical applications, only the permeability condition needs to be met; precise thickness is not required. Re-fabricating samples of different thicknesses for permeability testing is tedious, inefficient, and time-consuming. Therefore, efficiency can be improved by selecting the thickness of permeable concrete through the combination of estimated values ​​from different thicknesses and numerical fitting. Thus, this invention designs a permeability simulation device for permeable concrete. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a permeable concrete permeability simulation device.

[0005] A permeability simulation device for permeable concrete includes a test bench and an electrical control assembly. The test bench consists of a base plate, a back plate, and two side plates. A receiving platform is connected to the base plate of the test bench. A pressure-bearing platform composed of multiple sampling boxes is connected above the receiving platform. A water spraying platform is connected above the pressure-bearing platform. A hydraulic cylinder is connected to the water spraying platform and is mounted on the back plate of the test bench. A cutting assembly for cutting and sampling permeable concrete is connected to the pressure-bearing platform. A stacking assembly is connected to the pressure-bearing platform to stack the cut concrete samples vertically for multi-layer concrete sample permeability simulation testing.

[0006] In the permeable concrete permeability simulation device described above, the cutting assembly includes multiple sampling boxes arranged in a square array on a pressure platform. Each sampling box has two horizontal cutting blades and two vertical cutting blades connected to its four inner sides. Each horizontal and vertical cutting blade consists of two blades, and each sampling box has a blade on its sidewall. The blades on every two adjacent vertical cutting blades are fixedly connected to each other, thus fixing the multiple vertically arranged sampling boxes together. The blades on every two adjacent horizontal cutting blades are separable, allowing the multiple horizontally arranged sampling boxes to be separably connected. The cutting assembly also includes a support component for supporting the pressure platform. Each sampling box is connected to a sealing component, and each sampling box has a leakage port at its bottom.

[0007] In the permeable concrete simulation device described above, the stacking assembly includes multiple rotating shafts 1. Each sampling box has four rotating shafts 1 connected to its two sides. The four rotating shafts 1 together form a parallelogram structure, and the geometric center of the parallelogram structure coincides with the geometric center of the side of the sampling box. Each pair of adjacent sampling boxes has four rotating shafts 1 connected to a telescopic component 1 and a telescopic component 2. The telescopic component 1 and the telescopic component 2 are located on the upper and lower sides and are arranged in parallel. Each sampling box has a rotating shaft 2 connected to the geometric center of its outer wall. Multiple rotating shafts 2 are connected to a linkage plate. The linkage plate has a waist-shaped groove with a height matching the outer diameter of the rotating shaft 2. The bottom of the linkage plate is rotatably connected to a hydraulic cylinder. The bottom of the hydraulic cylinder is rotatably connected to the base plate of the test bench. The two side plates of the test bench are respectively provided with multiple arc-shaped grooves. The height of each arc-shaped groove matches the outer diameter of the rotating shaft 2. The centers of the multiple arc-shaped grooves are the same, and each arc-shaped groove is provided with a horizontal section, an arc-shaped section, and a vertical section. Each arc-shaped groove is provided with a magnetic field source.

[0008] In the above-mentioned permeable concrete permeable simulation device, the supporting component includes a sealing platform with openings at both the top and bottom. The upper and lower sides of the sealing platform abut against the pressure bearing platform and the receiving platform, respectively. A connecting plate is slidably connected in the sealing platform. Linear modules are symmetrically connected on both sides of the connecting plate. The linear modules are fixed to the side wall of the sealing platform.

[0009] In the permeable concrete simulation device described above, the sealing component includes an annular groove formed in each sampling box. The annular groove is formed in the four side walls of the sampling box and is filled with a sealing layer. The sealing layer wraps the permeable concrete sample located in the sampling box.

[0010] In the above-mentioned permeable concrete permeable simulation device, the size of the water spraying platform is matched with the internal size of the pressure platform, the top of the water spraying platform is connected to a water inlet pipe, the water spraying platform has the same number of liquid outlets as the sampling box, the receiving platform has a directional array of the same number of detection sensor plates as the sampling box, and multiple detection sensor plates are set in multiple detection spaces opened in the receiving platform.

[0011] Compared with existing technologies, the advantages of this invention are:

[0012] 1. The present invention first cuts the permeable concrete into multiple square samples by using a cutting component set on the pressure platform. Each sample is equipped with a water spray head facing it, and a detection sensor is set below it. This allows for simultaneous detection of different samples, improving detection efficiency. Compared with the prior art, which requires separate detection of multiple samples, the accuracy of the detection results is improved by detecting smaller samples.

[0013] 2: This invention, by setting up a stacking component, allows multiple sample platforms to overlap, and the number of overlapping sample platforms can be set, achieving the effect of thickening and testing multiple samples. The advantage of this is that after obtaining the permeability of a sample of unit thickness, the permeability can be estimated by stacking samples of different numbers of layers, making it more convenient and faster to select the required thickness of permeable concrete. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the mechanism in a permeable concrete permeability simulation device proposed in this invention.

[0015] Figure 2 This is a schematic diagram of the cutting component in a permeable concrete permeability simulation device proposed in this invention.

[0016] Figure 3 This is a schematic diagram of the supporting component in a permeable concrete permeability simulation device proposed in this invention.

[0017] Figure 4 This is a schematic diagram of the arc-shaped groove on the side plate of the test bench in a permeable concrete permeable simulation device proposed in this invention.

[0018] Figure 5 This is a schematic diagram of the water spraying platform in a permeable concrete permeable simulation device proposed in this invention.

[0019] Figure 6 This is a schematic diagram of the stacked components placed horizontally in a permeable concrete permeability simulation device proposed in this invention;

[0020] Figure 7This is a schematic diagram of the stacked components in a permeable concrete permeability simulation device proposed in this invention.

[0021] Figure 8 This is a cross-sectional view of the sealing component in a permeable concrete permeability simulation device proposed in this invention.

[0022] Figure 9 This is a schematic diagram of the sampling box in a permeable concrete permeability simulation device proposed in this invention.

[0023] In the diagram: 1 Test bench, 2 Receiving platform, 3 Pressure bearing platform, 4 Water spraying platform, 5 Hydraulic cylinder I, 6 Cutting assembly, 61 Sampling box, 62 Horizontal cutter, 63 Vertical cutter, 64 Support component, 641 Sealing platform, 642 Connecting plate, 643 Linear module, 65 Sealing component, 651 Annular groove, 652 Sealing layer, 66 Leakage port, 7 Stacking assembly, 71 Rotating shaft I, 72 Telescopic component I, 73 Telescopic component II, 74 Rotating shaft II, 75 Linkage plate, 76 Waist-shaped groove, 77 Hydraulic cylinder II, 78 Arc groove, 781 Horizontal section, 782 Arc section, 783 Vertical section. Detailed Implementation

[0024] Reference Figure 1-9 A permeability simulation device for permeable concrete includes a test bench 1 and an electrical control assembly. The test bench 1 consists of a base plate, a back plate, and two side plates. The test bench 1 is connected to a receiving platform 2. Above the receiving platform 2 is a pressure platform 3 composed of multiple sampling boxes 61. Above the pressure platform 3 is a water spraying platform 4. The water spraying platform 4 is connected to a hydraulic cylinder 5, which is connected to the test bench 1. The pressure platform 3 is connected to a cutting assembly 6 for cutting and sampling permeable concrete. The pressure platform 3 is connected to a stacking assembly 7 that can stack the cut concrete samples vertically to conduct multi-layer concrete sample permeability simulation tests.

[0025] The cutting assembly 6 includes multiple sampling boxes 61 arranged in a square array on the pressure platform 3. Each sampling box 61 has two transverse cutting blades 62 and two vertical cutting blades 63 connected to its four inner sides. Each transverse cutting blade 62 and vertical cutting blade 63 consists of two blades, and each sampling box 61 has one blade on its sidewall. The blades on every two adjacent vertical cutting blades 63 are fixedly connected, thus fixing the multiple vertically arranged sampling boxes 61 together. The blades on every two adjacent transverse cutting blades 62 are separable, allowing the multiple vertical sampling boxes 61 to be separably connected. When assembled, they form transverse cutting blades 62 to cut the permeable concrete, and when separated, they form a sealing part on the side of the permeable concrete. This allows for the creation of different cutting spaces to divide the concrete sample into different and non-communicating samples. The samples are tested separately. The cutting assembly 6 also includes a support component 64 that supports the pressure platform 3. Each sampling box 61 is connected to a sealing component 65. The sealing component 65 mainly seals the four side walls of the permeable concrete inside the sampling box 61. This prevents water from seeping out from the sides when water is introduced above the sample, thus avoiding affecting the test results. Each sampling box 61 has a leakage port 66 at the bottom. The leakage port 66 is designed with a square structure. Its function is to serve as a drainage part after the permeability simulation test, and to prevent the cut part from falling directly after the cutting assembly 6 cuts the concrete. The water discharged from the leakage port 66 will enter the receiving platform 2 below and enter the corresponding detection space, where it will be detected by the detection sensor.

[0026] The stacking assembly 7 includes multiple pivots 71. Four pivots 71 are connected to each of the two sides of each row of sampling boxes 61. These four pivots 71 together form a parallelogram structure, and the geometric center of the parallelogram structure coincides with the geometric center of the side surface of the sampling box 61. Each pair of adjacent rows of sampling boxes 61 has four pivots 71 connected to telescopic components 72 and 73. The telescopic components 72 and 73 are located on the upper and lower sides and are arranged parallel to each other. The geometric center of the outer wall of each row of sampling boxes 61 is... A second rotating shaft 74 is connected, and multiple rotating shafts 74 are connected to a linkage plate 75. The linkage plate 75 has a waist-shaped groove 76 whose height matches the outer diameter of the second rotating shaft 74. A hydraulic cylinder 77 is rotatably connected to the bottom of the linkage plate 75, and the bottom of the hydraulic cylinder 77 is rotatably connected to the base plate of the test bench 1. The two side plates of the test bench 1 are each provided with multiple arc-shaped grooves 78. The height of each arc-shaped groove 78 matches the outer diameter of the second rotating shaft 74. The centers of the multiple arc-shaped grooves 78 are the same, and each arc-shaped groove 78 has a horizontal section 7. 81. The arc-shaped section 782 and the vertical section 783, together with the rotating shaft 74 and the arc-shaped groove 78, restrict the rotation trajectory of multiple sampling boxes 61. When multiple sampling boxes 61 rotate, each sampling box 61 remains in a horizontal state, thus achieving the effect of overlapping sampling boxes 61. The function of the telescopic component 72 and the telescopic component 73 is to avoid rotational obstruction by extending during rotation, and to keep two adjacent sampling boxes 61 in contact and sealed by retracting after rotating to a vertical state. The telescopic components 72 and 73 are designed for easy inspection. They are constructed using a cylinder structure. Under the control of the electronic control components, the cylinders can control the telescopic function. Each arc-shaped groove 78 is equipped with a magnetic field source. Since the rotating shaft 74 is made of magnetostrictive material, it has the function of freely changing its length under a magnetic field. Therefore, by applying an external magnetic field to different rotating shafts 74, the telescopic function can be controlled. This allows the rotating shaft 74 to be extended and simultaneously enter the waist-shaped groove 76 and the arc-shaped groove 78, where it is limited.

[0027] The support component 64 includes a sealing platform 641 with openings at both the top and bottom. The upper and lower sides of the sealing platform 641 abut against the pressure platform 3 and the receiving platform 2, respectively. A connecting plate 642 is slidably connected to the sealing platform 641. Linear modules 643 are symmetrically connected to both sides of the connecting plate 642. The linear modules 643 are fixed to the side walls of the sealing platform 641. The connecting plate 642 can be moved through the linear modules 643, thereby controlling the sealing of the receiving platform 2 below during simulated tests of different thicknesses after unit thickness concrete testing. The sealing component 65 includes an annular groove 651 formed in each sampling box 61. The annular groove 651 is formed in the four side walls of the sampling box 61. The annular groove 651 is filled with a sealing layer 652, which covers the permeable concrete in the sampling box 61. The sample, in which the sealing layer 652 can be an airbag structure, is connected to a heating resistance wire in the pressure platform 3. Heating causes the sealing layer 652 to expand. Since the airbag is made of rubber, which is soft and deformable, when the sealing layer 652 expands, it will fully abut against the sides of the sample, thus sealing all four sides of the sample entering the sampling box 61. This ensures that water cannot seep out from the sides during water permeability testing. Multiple sampling boxes 61 can be used to test different samples separately. Alternatively, a liquid sealing material that can be heated and melted can be used for sealing. Similarly, heating the pressure platform 3 or the sampling box 61 can melt the sealing layer, which can also fill the uneven areas on the four sides of the sample, thus achieving a good sealing effect and facilitating water permeability testing.

[0028] The size of the water spray platform 4 is matched with the internal size of the pressure platform 3. The top of the water spray platform 4 is connected to a water inlet pipe. The water spray platform 4 has the same number of liquid outlets as the sampling box 61. The receiving platform 2 has a directional array of the same number of detection sensor plates as the sampling box 61, and multiple detection sensor plates are set in multiple detection spaces opened in the receiving platform 2.

[0029] In use, the present invention first places the permeable concrete sample on the pressure platform 3, and then activates the hydraulic cylinder 5 to lower the water spraying platform 4. In this step, the water spraying platform pressurizes the permeable concrete so that it is cut by the cutting component 6. The permeable concrete is then divided into multiple independent parts and falls into different sampling boxes 61, and is sealed by the sealing component 65 in each sampling box 61. At this time, the water spraying platform 4, which is against the upper surface of the permeable concrete sample, outputs water flow to each sampling box 61 below through multiple nozzles. At this time, the connecting plate 642 in the support component 64 moves to the outside of the sealing platform 641 under the action of the linear module 643, thereby connecting the leakage port 66 at the bottom of the multiple sampling boxes 61 with the receiving platform 2 below. In this way, multiple detection sensors located in the receiving platform 2 can simultaneously detect the permeability of multiple divided permeable concrete samples.

[0030] This application also allows for the stacking of any number of sampling boxes 61 using the stacking assembly 7 to conduct simulation tests on concrete of different thicknesses. The sampling box 61 closest to the back plate of the test bench 1 is fixed to the back plate, while adjacent sampling boxes 61 can be stacked to achieve mutual fixation and positioning of multiple sampling boxes 61. Specifically, the operation involves... Figure 6 For example, counting from right to left, the sampling boxes are 61a, 61b, 61c, and 61d. When testing a double-layer permeable concrete sample, the two cylinders of sampling box 61a are activated, separating sampling boxes 61a and 61b. Simultaneously, a magnetic field is input to the rotating shaft 74 on sampling box 61b. At this time, the rotating shaft 74 of the magnetostrictive material will extend and enter the waist-shaped groove in the linkage plate 75. The extension of the hydraulic cylinder 77 causes the linkage plate 75 to rotate, thereby driving sampling box 61b to rotate clockwise, so that sampling boxes 61a and 61b are in an overlapping state. At the same time, the position of the connecting plate 642 and the length of the cylinder are adjusted so that only the bottom space of sampling box 61a is retained and the two vertically positioned sampling boxes 61a and 61b overlap. Thus, the two overlapping The sampling box 61 signifies that the thickness of the permeable concrete in the simulation test is twice the original thickness. This allows for the estimation of the permeability rate of the doubled permeable concrete thickness. After testing, the retracting hydraulic cylinder 77 causes the linkage plate 75 to rotate counterclockwise, thus rotating the sampling box 61b counterclockwise back to its initial state. Similarly, when a three-layer thickness is selected, the cylinders of sampling boxes 61a and 61b are activated, causing sampling boxes 61a, 61b, and 61c to separate from each other. At the same time, a magnetic field is applied to the rotating shafts 74 in the three sampling boxes 61, causing the three rotating shafts 74 to simultaneously enter the waist-shaped grooves 76 in the linkage plate 75. Continuing to rotate the linkage plate 75 clockwise as described above, sampling boxes 61a, 61b, and 61c are all in an overlapping state. This process can be repeated to simultaneously achieve the effect of multiple layers of stacked sampling boxes 61, forming... Figure 7 The shape can be estimated in this state, and the permeability of multi-layer concrete can be estimated. The required thickness can be selected through the test results of permeability simulation. The extension and retraction of the cylinder during stacking is to avoid rotation obstruction when it extends, and to keep the two sampling boxes 61 sealed to each other when it contracts, so as to better achieve the effect of permeability simulation.

[0031] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative and not exhaustive. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A permeability simulation device for permeable concrete, comprising a test bench (1) and an electrical control assembly, characterized in that: The test bench (1) is composed of a base plate, a back plate and two side plates. The base plate of the test bench (1) is connected to a receiving platform (2). Above the receiving platform (2) is a pressure platform (3) composed of multiple sampling boxes (61). Above the pressure platform (3) is a water spraying platform (4). The water spraying platform (4) is connected to a hydraulic cylinder (5). The hydraulic cylinder (5) is connected to the back plate of the test bench (1). The pressure platform (3) is connected to a cutting component (6) for cutting and sampling permeable concrete. The pressure platform (3) is connected to a stacking component (7) that can stack the cut concrete samples vertically to conduct multi-layer concrete sample permeability simulation tests. The cutting assembly (6) includes a plurality of sampling boxes (61) arranged in a square array on the pressure platform (3). Each sampling box (61) has two horizontal cutting blades (62) and two vertical cutting blades (63) connected to its four inner sides. Each horizontal cutting blade (62) and vertical cutting blade (63) consists of two blades, and each sampling box (61) has a blade on its side wall. The blades on each pair of adjacent vertical cutting blades (63) are fixedly connected so that the plurality of vertically arranged sampling boxes (61) are fixed to each other. The blades in each pair of adjacent horizontal cutting blades (62) are detachable so that the plurality of horizontally arranged sampling boxes (61) can be detachably connected. The cutting assembly (6) also includes a support component (64) for supporting the pressure platform (3). Each sampling box (61) is connected to a sealing component (65), and each sampling box (61) has a leakage port (66) at its bottom. The size of the water spraying platform (4) is matched with the internal size of the pressure platform (3). The top of the water spraying platform (4) is connected to a water inlet pipe. The water spraying platform (4) has the same number of liquid outlets as the sampling box (61). The receiving platform (2) is arranged in a square array with the same number of detection sensor plates as the sampling box (61), and multiple detection sensor plates are arranged in multiple detection spaces in the receiving platform (2).

2. The permeability simulation device for permeable concrete according to claim 1, characterized in that: The stacking assembly (7) includes multiple pivots (71). Four pivots (71) are connected to two sides of each row of sampling boxes (61). The four pivots (71) together form a parallelogram structure, and the geometric center of the parallelogram structure coincides with the geometric center of the side of the sampling box (61). The four pivots (71) of each pair of adjacent rows of sampling boxes (61) are connected to a telescopic component (72) and a telescopic component (73). The telescopic component (72) and the telescopic component (73) are located on the upper and lower sides and are arranged in parallel. A pivot (74) is connected to the geometric center of the outer wall of each row of sampling boxes (61). The pivot (74) is made of magnetostrictive material. The second rotating shaft (74) is connected to a linkage plate (75). The linkage plate (75) has a waist-shaped groove (76) with a height matching the outer diameter of the second rotating shaft (74). The bottom of the linkage plate (75) is rotatably connected to a hydraulic cylinder (77). The bottom of the hydraulic cylinder (77) is rotatably connected to the base plate of the test bench (1). The two side plates of the test bench (1) are respectively provided with multiple arc-shaped grooves (78). The height of each arc-shaped groove (78) matches the outer diameter of the second rotating shaft (74). The centers of the multiple arc-shaped grooves (78) are the same, and each arc-shaped groove (78) is provided with a horizontal section (781), an arc section (782), and a vertical section (783). Each arc-shaped groove (78) is provided with a magnetic field source.

3. The permeability simulation device for permeable concrete according to claim 1, characterized in that: The supporting component (64) includes a sealing platform (641) with openings at both the top and bottom. The upper and lower sides of the sealing platform (641) abut against the pressure bearing platform (3) and the receiving platform (2) respectively. A connecting plate (642) is slidably connected in the sealing platform (641). Linear modules (643) are symmetrically connected on both sides of the connecting plate (642). The linear modules (643) are fixed on the side wall of the sealing platform (641).

4. The permeability simulation device for permeable concrete according to claim 1, characterized in that: The sealing component (65) includes an annular groove (651) formed in each sampling box (61), the annular groove (651) being formed in the four side walls of the sampling box (61), the annular groove (651) being filled with a sealing layer (652), the sealing layer (652) enclosing the permeable concrete sample located in the sampling box (61).

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