Mortar impermeability testing device

Abstract

The invention relates to a mortar impermeability test device, and belongs to the field of concrete performance detection, the mortar impermeability test device comprises a rack and tool cover cylinders, the rack is provided with a placing table, the placing table is provided with a plurality of mortar placing positions, and each mortar placing position is used for placing one tool cover cylinder and is detachably connected with the rack; a matching ring groove is formed in the position, located at the mortar containing position, of the containing table, the groove depth direction of the matching ring groove is perpendicular to the table top of the containing table, and a port of the water flow channel is located on the inner side of the matching ring groove. The cylindrical part is coaxially inserted into the matching ring groove, the side edge of the mortar sample is in contact with the inner wall of the conical cylinder part, and a locking piece used for stopping and limiting the tool cover cylinder is arranged on the rack. According to the invention, through the rapid installation of the tool cover cylinder on the rack, the operation efficiency of the experiment early-stage preparation work is improved.

Description

Technical Field

[0001] This application relates to the field of concrete performance testing, and in particular to a mortar impermeability testing device. Background Technology

[0002] Impermeable concrete is a widely used artificial stone material in construction. For certain buildings, such as hydraulic structures, underwater, submerged, underground, and other construction projects, a certain level of impermeability is required. Impermeability refers to the ability of materials used in a structure to resist the penetration of water and other liquids (light oil, heavy oil) under pressure. In related technologies, the device used to test the impermeability of concrete materials is a mortar impermeability tester.

[0003] The impermeability tester includes a frame with multiple mortar block placement positions. Each mortar placement position is equipped with a water passage and is connected to a tooling cover via a flange. The sides of the mortar sample are coated with waterproof paint. The mortar sample is placed in the placement position and sealed with the tooling cover. The port of the water passage is located below the mortar sample.

[0004] According to GJ / T70-2009 "Standard for Test Methods of Basic Performance of Building Mortar", a single impermeability test requires testing three groups of mortar samples, with six samples in each group. However, the flange structure of a single tooling cover of a common mortar impermeability tester includes at least six bolts, making the disassembly and assembly process of the tooling cover quite cumbersome. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a mortar impermeability testing device.

[0006] The mortar impermeability testing device provided in this application adopts the following technical solution: A mortar impermeability testing device includes a frame and a fixture cover. The frame is equipped with a placement platform with multiple mortar placement positions. Each mortar placement position is for placing one fixture cover and is detachably connected to the frame. The frame is provided with a water flow channel, the port of which is located at a mortar placement position. A mating annular groove is provided on the placement platform at the mortar placement position. The depth direction of the mating annular groove is perpendicular to the surface of the placement platform. The port of the water flow channel is located inside the mating annular groove. The fixture cover includes a cylindrical part and a conical part coaxially and fixedly connected to each other. The cylindrical part is located on the larger diameter side of the conical part. The mating annular groove allows the cylindrical part to be coaxially inserted. The side edge of the mortar sample contacts the inner wall of the conical part. The frame is provided with a locking device for preventing and limiting the backward movement of the fixture cover.

[0007] Preferably, the locking element is a locking pin, which is slidably connected to the frame and slides in the radial direction of the mating ring groove. A locking groove for inserting the locking pin is provided on the side wall of the tooling cover.

[0008] Preferably, a locking knob is rotatably provided on the placement platform, and the locking knob and the locking pin are coaxially threaded together. The end of the locking pin facing the tooling cover is formed with a locking wedge surface, and a force-bearing wedge surface is formed on the groove wall of the locking groove. The locking wedge surface and the force-bearing wedge surface abut against each other, and the abutting force of the locking wedge surface against the force-bearing wedge surface has a component toward the bottom of the mating ring groove.

[0009] Preferably, a sealing ring is coaxially fixedly connected to the inner side of the cylindrical portion, and the sealing ring and the groove wall of the mating ring groove are in contact and abut against each other.

[0010] Preferably, a detection ring groove is provided on the inner side wall of the tooling cover at the junction of the cylindrical and conical parts. The contact position between the platform of the placement table and the mortar sample is located at the opening of the detection ring groove. A detection component is provided on the tooling cover, and the detection component is used to test the airtightness of the detection ring groove.

[0011] Preferably, the detection assembly includes a detection tube and a detection piston. The detection tube is fixedly connected to the outer wall of the tooling cover and one end of the detection tube is connected to the detection ring groove. The detection piston is slidably disposed inside the detection tube. A force-applying component is disposed on the side of the detection piston away from the detection ring groove. The force-applying component is used to transmit thrust or pull force to the detection piston.

[0012] Preferably, the detection tube is a transparent tube with graduations on its wall. The force-applying component includes a force-applying operating block and a transmission spring. One end of the transmission spring is connected to the detection piston, and the other end is connected to the force-applying operating block. The detection tube is equipped with a control component for controlling the relative position of the force-applying operating block and the detection tube.

[0013] Preferably, the control component is a fixed rod, which is fixedly connected to the tooling cover. When the force application block is located inside the detection tube, the end of the fixed rod can abut against the side of the force application block away from the transmission spring.

[0014] Preferably, the length direction of the fixing rod is parallel to the length direction of the detection tube, and the edge of the force application block is provided with a guide groove for the fixing rod to pass through.

[0015] Preferably, the control component is a control screw, which is threadedly connected to the tooling cover. The axis of the control screw is parallel to the length direction of the detection tube, and one end of the control screw is rotatably connected to the force application block.

[0016] This application includes at least one of the following beneficial technical effects: 1. By setting up a tooling cover with a cylindrical part and a conical part and a locking part, the cylindrical part is inserted into the conical part to achieve cooperation with the tooling cover and the placement table. The locking part only needs to be responsible for preventing the tooling cover from moving backward. The structure is simple and the operation is easy. 2. By setting up the detection ring groove and detection components, the detection components test the airtightness of the detection ring groove before the test begins. If the airtightness of the detection ring groove is good, it means that the sealing between the cylindrical part and the mating ring groove, and between the conical part and the mortar sample is good. The negative impact factors of the water seepage test are reduced and the test accuracy is improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the mortar impermeability test device in Embodiment 1 of this application.

[0018] Figure 2 This is a cross-sectional schematic diagram illustrating the working principle of the locking pin in Embodiment 1 of this application.

[0019] Figure 3 This is a schematic diagram of the overall structure of the tooling cover in Embodiment 1 of this application.

[0020] Figure 4 This is a cross-sectional view of the structure used to illustrate the working principle of the detection component in Embodiment 1 of this application.

[0021] Figure 5 This is a top view diagram in Embodiment 1 of this application, illustrating when the force-applying operating block is located at the opening of the detection tube and when the bottom of the fixing rod is in contact with it.

[0022] Figure 6 This is a cross-sectional view of the structure used to illustrate the working principle of the detection component in Embodiment 2 of this application.

[0023] Explanation of reference numerals in the attached drawings: 1. Frame; 12. Placement platform; 13. Mating ring groove; 14. Water flow channel; 2. Tooling cover; 21. Cylindrical part; 22. Conical part; 23. Locking groove; 231. Force-bearing wedge surface; 24. Detection ring groove; 25. Sealing ring; 3. Locking pin; 31. Locking wedge surface; 32. Locking knob; 4. Detection assembly; 41. Detection tube; 42. Detection piston; 43. Force-applying component; 431. Force-applying operating block; 4311. Guide groove; 432. Transmission spring; 44. Control component; 441. Fixing rod; 442. Control screw; 5. Mortar sample. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail. Example 1

[0025] This application discloses a mortar impermeability testing device, such as... Figure 1 and 2 As shown, the system includes a frame 1 and a tooling cover 2. The frame 1 has three layers of placement platforms 12, each with six mortar placement positions. Each mortar placement position is for one tooling cover 2 and is detachably connected to the frame 1. Each mortar placement position is for placing a mortar sample 5, with each tooling cover 2 fitted onto one mortar sample 5. Each layer of placement platform 12 holds one set of mortar samples 5, meaning the frame 1 can simultaneously test three sets of mortar samples 5.

[0026] like Figure 1 and 2 As shown, a mating annular groove 13 is provided on the placement platform 12 at the mortar placement position. The groove depth direction of the mating annular groove 13 is perpendicular to the platform surface of the placement platform 12, and its projection along the groove depth direction is circular. The shape of the mating annular groove 13 is a ring. A water flow channel 14 is provided on the frame 1, which is connected to a water supply source (not shown in the figure). The port of the water flow channel 14 is located at the center of the inner side of the mating annular groove 13. The mortar sample 5 is frustum-shaped, that is, the radial dimensions at its two ends are inconsistent. The tooling cover 2 includes a cylindrical part 21 and a conical part 22 that are coaxially integrally formed. The cylindrical part 21 is located on the large-diameter side of the conical part 22. The mating annular groove 13 allows the cylindrical part 21 to be coaxially inserted. The side edge of the mortar sample 5 placed at the mortar placement position will be in close contact with the inner wall of the conical part 22. The generatrix inclination angle of the conical part 22 is 10°.

[0027] like Figure 2 and 3 As shown, the frame 1 is equipped with a locking element for preventing and limiting the backward movement of the tooling cover 2. The locking element is a locking pin 3, which is slidably connected to the frame 1. The sliding direction is radial to the mating ring groove 13. Each mortar placement position corresponds to two locking pins 3, which are located on opposite sides of the mating ring groove 13. Two locking grooves 23 for the locking pins 3 to be inserted are provided on the side wall of the cylindrical part 21 of the tooling cover 2. A locking knob 32 is rotatably mounted on the placement platform 12. The locking knob 32 and the locking pin 3 are coaxially threadedly connected. By rotating the locking knob 32, the movement of the locking pin 3 towards or away from the cylindrical part 21 can be controlled. The locking pin 3 has a locking wedge surface 31 formed at one end facing the tooling cover 2. The locking wedge surface 31 is inclined downward. The locking groove 23 has a force-bearing wedge surface 231 formed on the groove wall. The force-bearing wedge surface 231 is inclined upward. The abutment force of the locking wedge surface 31 against the force-bearing wedge surface 231 has a component towards the bottom of the mating ring groove 13, so that the tooling cover 2 cannot be removed from the mortar placement position.

[0028] like Figure 2 , 3As shown in Figure 4, before placing the mortar sample 5 in the mortar placement position, its sidewalls need to be coated with an anti-seepage coating. When the mortar sample 5 is located inside the conical section 22, the anti-seepage coating on its surface will directly contact the inner wall of the conical section 22. A sealing ring 25 is coaxially fixedly connected to the inner side of the cylindrical section 21. After the cylindrical section 21 is inserted into the mating ring groove 13, the sealing ring 25 and the groove wall of the mating ring groove 13 come into contact and abut, thereby improving the sealing performance under the table surface of the placement platform 12 inside the tooling cover 2. A test ring groove 24 is provided on the inner side wall of the tooling cover 2 at the junction of the cylindrical section 21 and the conical section 22. The contact position between the table surface of the placement platform 12 and the mortar sample 5 is located at the opening of the test ring groove 24. The airtightness of the test ring groove 24 is an important prerequisite for the accuracy of the anti-seepage test results. A test component 4 is provided on the tooling cover 2, which is used to test the airtightness of the test ring groove 24.

[0029] like Figure 3 and 4 As shown, the detection assembly 4 includes a detection tube 41 and a detection piston 42. The detection tube 41 is fixedly connected to the outer wall of the tooling cover 2, and one end of the detection tube 41 communicates with the detection ring groove 24. The detection piston 42 is slidably disposed inside the detection tube 41, and its side wall is in close contact with the inner wall of the detection tube 41. A force-applying component 43 is provided on the side of the detection piston 42 away from the detection ring groove 24. The force-applying component 43 is used to transmit a pushing or pulling force to the detection piston 42 to make it move. The detection tube 41 is a transparent tube with graduations on its wall. In this embodiment, the material of the detection tube 41 is quartz glass. The force-applying component 43 includes a force-applying operating block 431 and a transmission spring 432. One end of the transmission spring 432 is fixedly connected to the detection piston 42, and the other end is fixedly connected to the force-applying operating block 431. A control component 44 is provided on the detection tube 41 to control the relative position of the force-applying operating block 431 and the detection tube 41.

[0030] like Figure 4 and 5As shown, in this embodiment, the control component 44 is a fixed rod 441, which is fixedly connected to the tooling cover 2. The length direction of the fixed rod 441 is parallel to the length direction of the detection tube 41. The edge of the force application block 431 is provided with a guide groove 4311, through which the fixed rod 441 passes. The lower end of the fixed rod 441 is located at the opening of the detection tube 41. After the tooling cover 2 is fixed on the placement table 12, the airtightness of the detection ring groove 24 is tested: first, the detection piston 42 is inserted into the detection tube 41, and at the same time, the force application block 431 slides from the end of the fixed rod 441 away from the detection tube 41 through the guide groove 4311. During the downward sliding process of the force application block 431, it continuously applies a pushing force to the detection piston 42 through the transmission spring 432, so that the detection piston 42 moves against the air pressure in the detection tube 41, and the transmission spring 432 is also continuously compressed. When the force-applying block 431 reaches the bottom of the fixed rod 441, it also enters the opening of the detection tube 41. At this time, the guide groove 4311 and the fixed rod 441 disengage from each other. Then, the force-applying block 431 is rotated, causing the guide groove 4311 and the fixed rod 441 to deviate from each other. The end of the fixed rod 441 can then abut against the side of the force-applying block 431 away from the transmission spring 432. Under the action of the elastic force of the transmission spring 432 and the abutting force of the fixed rod 441, the force-applying block 431 remains stable, and the detection piston 42 also becomes stable. Afterward, the condition for the detection piston 42 to remain stable is that the air pressure inside the detection tube 41 and the elastic force of the transmission spring 432 remain in balance. If there is a problem with the airtightness of the detection ring groove 24, the air pressure inside the detection tube 41 will gradually decrease, which will manifest as the detection piston 42 slowly moving away from the force-applying block 431, thus achieving airtightness detection. When an airtightness problem is detected in the test ring groove 24, the tooling cover 2 needs to be removed to further determine the specific location of the leak. Example 2

[0031] like Figure 6 As shown, the difference from Embodiment 1 is that in this embodiment, the control component 44 is a control screw 442, which is threadedly connected to the tooling cover 2. The axis of the control screw 442 is parallel to the length direction of the detection tube 41. The force-applying operating block 431 is always located inside the detection tube 41. One end of the control screw 442 is rotatably connected to the force-applying operating block 431. The cross-sections of the force-applying operating block 431, the detection tube 41, and the detection piston 42 are all non-circular; in this embodiment, they are elliptical. The rotation of the control screw 442 enables it to move axially, thereby pushing and pulling the force-applying operating block 431. Compared with Embodiment 1, the advantage of this embodiment is that it allows the force-applying operating block 431 to enter a deeper position inside the detection tube 41, while the disadvantage is that the operating efficiency is low and the force-applying operating block 431 moves slowly.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mortar impermeability testing device, comprising a frame (1) and a tooling cover (2), wherein the frame (1) is provided with a placement platform (12), the placement platform (12) has multiple mortar placement positions, each mortar placement position is for placing a tooling cover (2) and is detachably connected to the frame (1), the frame (1) is provided with a water flow channel (14), the port of the water flow channel (14) is located at the mortar placement position; Its features are: The placement platform (12) is provided with a mating annular groove (13) located at the mortar placement position. The groove depth direction of the mating annular groove (13) is perpendicular to the platform surface of the placement platform (12). The port of the water flow channel (14) is located inside the mating annular groove (13). The tooling cover (2) includes a cylindrical part (21) and a conical part (22) that are coaxially fixedly connected to each other. The cylindrical part (21) is located on the large diameter side of the conical part (22). The mating annular groove (13) is for the cylindrical part (21) to be coaxially inserted. The side edge of the mortar sample (5) is in contact with the inner wall of the conical part (22). The frame (1) is provided with a locking element for preventing and limiting the tooling cover (2).

2. The mortar impermeability testing device according to claim 1, characterized in that: The locking component is a locking pin (3), which is slidably connected to the frame (1). The sliding direction is radial to the mating ring groove (13). The side wall of the tooling cover (2) is provided with a locking groove (23) for the locking pin (3) to be inserted.

3. The mortar impermeability testing device according to claim 2, characterized in that: A locking knob (32) is rotatably provided on the placement platform (12). The locking knob (32) and the locking pin (3) are coaxially threaded together. The locking pin (3) has a locking wedge surface (31) formed at one end facing the tooling cover (2). A force-bearing wedge surface (231) is formed on the groove wall of the locking groove (23). The locking wedge surface (31) and the force-bearing wedge surface (231) abut against each other. The abutting force of the locking wedge surface (31) against the force-bearing wedge surface (231) has a component toward the bottom of the mating ring groove (13).

4. A mortar impermeability testing device according to any one of claims 1-3, characterized in that: A sealing ring (25) is coaxially fixedly connected to the inner side of the cylindrical part (21), and the sealing ring (25) and the groove wall of the mating ring groove (13) are in contact and abut against each other.

5. The mortar impermeability testing device according to claim 4, characterized in that: The tooling cover (2) has a test ring groove (24) on its inner side wall and at the junction of the cylindrical part (21) and the conical part (22). The contact position between the table surface of the placement platform (12) and the mortar sample (5) is located at the opening of the test ring groove (24). The tooling cover (2) is provided with a test component (4), which is used to test the airtightness of the test ring groove (24).

6. The mortar impermeability testing device according to claim 5, characterized in that: The detection assembly (4) includes a detection tube (41) and a detection piston (42). The detection tube (41) is fixedly connected to the outer wall of the tooling cover (2) and one end of the detection tube (41) is connected to the detection ring groove (24). The detection piston (42) is slidably disposed in the detection tube (41). A force-applying component (43) is provided on the side of the detection piston (42) away from the detection ring groove (24). The force-applying component (43) is used to transmit thrust or pull force to the detection piston (42).

7. The mortar impermeability testing device according to claim 6, characterized in that: The detection tube (41) is a transparent tube with graduations on its wall. The force application component (43) includes a force application operation block (431) and a transmission spring (432). One end of the transmission spring (432) is connected to the detection piston (42), and the other end is connected to the force application operation block (431). The detection tube (41) is provided with a control component (44) for controlling the relative position of the force application operation block (431) and the detection tube (41).

8. The mortar impermeability testing device according to claim 7, characterized in that: The control component (44) is a fixed rod (441). The fixed rod (441) is fixedly connected to the tooling cover (2). When the force application block (431) is located inside the detection tube (41), the end of the fixed rod (441) can abut against the side of the force application block (431) away from the transmission spring (432).

9. The mortar impermeability testing device according to claim 8, characterized in that: The length direction of the fixed rod (441) is parallel to the length direction of the detection tube (41), and the edge of the force application block (431) is provided with a guide groove (4311) for the fixed rod (441) to pass through.

10. The mortar impermeability testing device according to claim 7, characterized in that: The control component (44) is a control screw (442), which is threadedly connected to the tooling cover (2). The axis of the control screw (442) is parallel to the length direction of the detection tube (41), and one end of the control screw (442) is rotatably connected to the force application block (431).

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