Self-compacting concrete impermeability detection device

Abstract

The utility model relates to the field of concrete anti-permeability instruments, and discloses a self-compacting concrete anti-permeability detection device which comprises an anti-permeability instrument body. The plurality of test mold seats are mounted above the anti-permeability instrument body; the test mold comprises an outer tube and a plurality of arc-shaped plates detachably connected to the interior of the outer tube, the outer tube and the test mold base are detachably connected in a one-to-one correspondence mode, and the arc-shaped plates are spliced to form a tubular structure. By arranging the arc-shaped plate, the arc-shaped plate can be disassembled and assembled on the peripheral side of the concrete test piece, the effect of partition disassembly and assembly can be achieved, and compared with a traditional disassembly and assembly mode, friction force between the concrete test piece and the single arc-shaped plate is reduced, so that physical output of testers is reduced, and the assembly and disassembly efficiency of the concrete test piece is improved; and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete permeability testing instruments, and in particular to a device for testing the permeability of self-compacting concrete. Background Technology

[0002] With the continuous advancement of infrastructure construction, concrete, as a major building material, is increasingly widely used in various engineering projects. Self-compacting concrete, due to its excellent fluidity and filling capacity, is particularly suitable for construction in complex structures and densely reinforced applications. However, ensuring the impermeability of self-compacting concrete is crucial to guaranteeing its durability and service life. Therefore, developing an effective device for testing the impermeability of self-compacting concrete is of paramount importance.

[0003] Patent CN221707240U discloses a concrete impermeability tester. In use, this device utilizes a lifting mechanism and a fixing mechanism. A servo motor drives two worm gears via a drive rod, which in turn drive two lifting screws via two worm wheels. The lifting screws control the downward movement of the lifting plate, which in turn controls the downward movement of the fixing plate via a fixing ring. The fixing plate moves downward and inserts into the fixing port and fixing groove. Then, the downward movement of the pressure plate squeezes the mold mounting ring, quickly fixing the mold onto the mold base without the need for multiple connecting studs, making it more convenient.

[0004] However, the above-mentioned impermeability tester has the following defects: On the one hand, after the concrete is sealed with paraffin oil, it is then put into the mold. Because the concrete and the mold are tightly bonded, there is no change when it is taken out after the test, making it difficult to demold. On the other hand, the fixing ring provides force through the lifting plate, which results in uneven force on the fixing ring. This leads to uneven force between the mold and the mold base mounting ring, which may result in insufficient tightness between the mold and the mold base, affecting the experimental results. Utility Model Content

[0005] The present invention aims to provide a device for testing the impermeability of self-compacting concrete to overcome the shortcomings mentioned above.

[0006] To achieve the above objectives, the technical solution of this utility model is: a device for testing the impermeability of self-compacting concrete, comprising:

[0007] The body of the impermeability meter;

[0008] Several mold holders installed above the permeability tester body; and

[0009] The test mold includes an outer tube and multiple arc-shaped plates detachably connected inside the outer tube. The outer tube and the test mold base are detachably connected in a one-to-one correspondence. The multiple arc-shaped plates are spliced ​​together to form a tubular structure.

[0010] Furthermore, the bottom of the outer tube extends inward, and then its inner edge extends upward to form an annular bottom groove, which is detachably connected to the bottom of the arc-shaped plate.

[0011] The top inner wall of the outer tube is detachably connected to an "annular" end cap. The inner wall edge of the end cap extends downward and cooperates with the inner wall of the outer tube to form a top groove. The top groove is detachably connected to the top of the arc-shaped plate.

[0012] Furthermore, the inner sidewall of the top of the outer tube is detachably threaded to the end cap, and a screw hole is provided at the top of the end cap, into which a screwing tool is detachably connected.

[0013] Furthermore, the screwing tool includes:

[0014] Two spaced-apart grip plates;

[0015] Two screw rods are located at both ends of the grip plate. One end and the middle part of each screw rod are fixedly connected to the two grip plates, and the other end of each screw rod is detachably connected to the screw hole.

[0016] Furthermore, a plug is provided on one side wall edge of the arc-shaped plate, and a slot is provided on the other side wall edge of the arc-shaped plate, and the plug and the slot are detachably connected.

[0017] Furthermore, the bottom of the outer tube extends outward to form a flange, and the flange is provided with a plurality of flange holes. The test mold base is provided with detachable connecting rods corresponding one-to-one with the plurality of flange holes. The connecting rods are arranged in a vertical direction and selectively pass through the flange holes and are locked by a locking assembly.

[0018] Furthermore, the locking assembly includes a locking ring rotatably connected to the upper surface of the flange, the upper surface of the locking ring being recessed downward to form a plurality of first inclined surfaces;

[0019] The connecting rod has a recessed side wall near the locking ring to form a second inclined surface. The rotation of the locking ring enables a selective one-to-one sliding connection between a number of the second inclined surfaces and a number of the first inclined surfaces.

[0020] Furthermore, a limiting ring is fixedly sleeved on the outer side wall of the outer tube, and the lower surface of the limiting ring is slidably connected to the upper surface of the locking ring;

[0021] The locking ring has several notches on its sidewall, and these notches are connected to several first inclined surfaces. The connecting rod selectively passes through these notches.

[0022] Furthermore, the locking component also includes:

[0023] A first connecting block is fixedly connected to the locking ring, and the first connecting block is provided with a first connecting hole;

[0024] A second connecting block is fixedly connected to the flange, and the second connecting block is provided with a second connecting hole;

[0025] Fasteners that can be detachably connected to the first connection hole and the second connection hole.

[0026] Furthermore, both the top and bottom of the test mold base are provided with annular sealing grooves, and a sealing ring is provided inside the sealing grooves.

[0027] Compared with the prior art, this utility model has at least the following advantages:

[0028] (1) By setting up an arc plate, the arc plate can be installed and removed around the concrete specimen, which can achieve the effect of partitioned installation and removal. Compared with the traditional installation and removal method, the friction between the concrete specimen and a single arc plate is reduced, thereby reducing the physical exertion of the test personnel, improving the installation and removal efficiency of the concrete specimen, and improving work efficiency.

[0029] (2) By using a locking ring, this utility model can drive the flange and the test mold base to be evenly stressed, thereby improving the sealing between the outer tube and the test mold base. Compared with the traditional flange connection, it reduces the number of fasteners used and improves the installation efficiency of the test mold and test mold base while meeting the sealing requirements of the test mold and test mold base. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the self-compacting concrete impermeability testing device of this utility model;

[0032] Figure 2 This is a cross-sectional view of the self-compacting concrete impermeability testing device of this utility model;

[0033] Figure 3This is an exploded view of the self-compacting concrete impermeability testing device of this utility model.

[0034] Reference numerals in the attached drawings: 1. Permeability tester body; 2. Test mold base; 3. Connecting rod; 4. Second inclined surface; 5. Outer tube; 6. Bottom groove; 7. Top groove; 8. Flange; 9. Flange hole; 10. Locking ring; 11. First inclined surface; 12. End cap; 13. Tightening hole; 14. Arc plate; 15. Plug; 16. Slot; 17. Holding plate; 18. Tightening rod; 19. Limiting ring; 20. Notch; 21. First connecting block; 22. Second connecting block; 23. Fastener; 24. Sealing ring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figure 1 This utility model provides a device for testing the impermeability of self-compacting concrete, including an impermeability meter body 1, a mold base 2, and a mold. Several mold bases 2 are provided and installed above the impermeability meter body 1. Concrete samples are placed in the molds for testing. Specifically, the mold includes an outer tube 5 and arc-shaped plates 14. The outer tube 5 is detachably connected to the mold base 2 in a one-to-one correspondence. Multiple arc-shaped plates 14 are provided and spliced ​​together to form a tubular structure. The multiple arc-shaped plates 14 are detachably connected inside the outer tube 5.

[0038] Combined with reference Figure 2-3 Preferably, the bottom of the outer tube 5 extends inward, and then its inner edge extends upward to form an annular bottom groove 6. This bottom groove 6 can be detachably connected to the bottom of the arc-shaped plate 14. At the same time, the top inner wall of the outer tube 5 is detachably connected to the "annular" end cap 12. The inner edge of the end cap 12 extends downward and cooperates with the inner wall of the outer tube 5 to form a top groove 7. This top groove 7 can be detachably connected to the top of the arc-shaped plate 14.

[0039] Preferably, the inner top wall of the outer tube 5 is connected to the end cap 12 by a detachable threaded connection. A screw hole 13 is provided at the top of the end cap 12, and a screwing tool is detachably connected to the screw hole 13.

[0040] Specifically, the screwing tool includes two spaced-apart grip plates 17 and two screwing rods 18. The two screwing rods 18 are located at both ends of the grip plates 17, with one end and the middle part of the screwing rod 18 fixedly connected to the two grip plates 17 respectively, and the other end of the screwing rod 18 being detachably connected to the screwing hole 13.

[0041] Preferably, a plug 15 is provided on one side wall edge of the arc plate 14, and a slot 16 is provided on the other side wall edge of the arc plate 14, with the plug 15 and the slot 16 being detachably connected.

[0042] Preferably, the bottom of the outer tube 5 extends outward to form a flange 8, and the flange 8 is provided with a plurality of flange holes 9. The mold base 2 is provided with connecting rods 3 that correspond one-to-one with these flange holes 9 and are detachably connected. The connecting rods 3 are arranged in a vertical direction and can selectively pass through the flange holes 9, and are then locked by a locking assembly.

[0043] The locking assembly includes a locking ring 10 rotatably connected to the upper surface of the flange 8. The upper surface of the locking ring 10 is recessed downward to form several first inclined surfaces 11. The connecting rod 3 is recessed near the side wall of the locking ring 10 to form a second inclined surface 4. The rotation of the locking ring 10 enables the several second inclined surfaces 4 to be selectively and one-to-one slidably connected to the several first inclined surfaces 11.

[0044] In addition, a limiting ring 19 is fixedly sleeved on the outer side wall of the outer tube 5, and the lower surface of the limiting ring 19 is slidably connected to the upper surface of the locking ring 10. The side wall of the locking ring 10 has a number of notches 20, which are connected to a number of first inclined surfaces 11, and the connecting rod 3 can selectively pass through these notches 20.

[0045] The locking assembly also includes a first connecting block 21, a second connecting block 22, and a fastener 23. The first connecting block 21 is fixedly connected to the locking ring 10 and has a first connecting hole. The second connecting block 22 is fixedly connected to the flange 8 and has a second connecting hole. The fastener 23 is detachably connected to the first connecting hole and the second connecting hole. The fastener 23 is preferably a bolt or nut.

[0046] During the relative sliding process of the first inclined surface 11 and the second inclined surface 4, the flange 8 and the mold base 2 can fit more tightly. At this time, the position of the locking ring 10 and the flange 8 is limited by the fastener 23, which can effectively ensure that the outer tube 5 and the mold base 2 achieve effective sealing.

[0047] Preferably, the top of the mold base 2 and the bottom of the outer tube 5 are provided with annular sealing grooves, and a sealing ring 24 is provided inside the sealing grooves, thereby improving the sealing performance of the mold base 2 and the outer tube 5.

[0048] The working principle of this utility model:

[0049] First, the two screw rods 18 of the screwing tool are inserted into the two screwing holes 13. The tester holds the holding plate 17 and rotates it to remove the end cap 12 from the outer tube 5. Then, the arc plate 14 is taken out from the outer tube 5. A standard concrete specimen is prepared, usually a cylindrical specimen with a diameter of 10 cm and a height of 20 cm. A layer of waterproofing agent is applied to the surface of the specimen to prevent moisture from seeping through. Then, the arc plate 14 is installed around the periphery of the specimen. The plugs 15 of two adjacent arc plates 14 are inserted into the slots 16 to ensure that the periphery of the specimen is tightly fitted with the inner wall of the arc plate 14. Then, the whole specimen is installed in the outer tube 5, the end cap 12 is put on, and the screwing tool is used to install it in the outer tube 5. The position of the specimen in the outer tube 5 is adjusted so that it is embedded in the outer tube 5 and does not protrude from the outer tube 5.

[0050] Then, the locking ring 10 above the flange 8 is rotated so that the notch 20 aligns with the flange hole 9. The connecting post is then passed through the flange hole 9. By rotating the locking ring 10, the first inclined surface 11 and the second inclined surface 4 are slidably connected. Fasteners 23 are passed through the first and second connecting holes, causing the first inclined surface 11 and the second inclined surface 4 to slide further. At this point, the flange 8 is tightened towards the mold base 2, thus achieving a seal between the mold base 2 and the outer tube 5. Several test pieces are then installed on the mold base 2 in this manner.

[0051] Next, using the pressure control system of the permeability tester body 1, varying water pressure is gradually applied according to a set program. Typically, 0.5 times the expected water pressure the specimen is expected to withstand is applied first, and after stabilizing for a period, the pressure is gradually increased to 1.5 times. During the application of water pressure, the internal water pressure of the specimen is measured using a built-in pressure sensor. Simultaneously, the test personnel closely observe the surface of the specimen, immediately recording the time and location of any water leakage. Based on the measurement results and relevant calculation formulas, the permeability coefficient of the concrete is calculated.

[0052] Finally, after the test, the connection between the flange 8 and the locking ring 10 is released by disassembling the fastener 23. At this time, the outer tube 5 can be removed from the test mold base 2. Then, the end cap 12 is removed from the outer tube 5 again by using a screwdriver. The arc plate 14 and the test piece are taken out, and the arc plate 14 is removed from the circumferential direction of the test piece.

[0053] By setting up the arc-shaped plate 14, this utility model allows for the assembly and disassembly of the arc-shaped plate 14 around the concrete specimen, achieving the effect of sectional assembly and disassembly. Compared with the traditional assembly and disassembly method, the friction between the concrete specimen and a single arc-shaped plate 14 is reduced, thereby reducing the physical exertion of the test personnel, improving the efficiency of concrete specimen assembly and disassembly, and improving work efficiency.

[0054] This utility model uses a locking ring 10 to drive the flange 8 and the test mold base to be evenly stressed, thereby improving the sealing between the outer tube 5 and the test mold base. Compared with the traditional flange connection, it reduces the number of fasteners 23 used, and improves the installation efficiency of the test mold and test mold base 2 while meeting the sealing requirements of the test mold and test mold base.

[0055] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for testing the impermeability of self-compacting concrete, characterized in that, include: Impermeability meter body (1); Several test mold bases (2) are installed above the body (1) of the permeability tester; as well as The test mold includes an outer tube (5) and multiple arc-shaped plates (14) detachably connected inside the outer tube (5). The outer tube (5) and the test mold base (2) are detachably connected in a one-to-one correspondence. The multiple arc-shaped plates (14) are spliced ​​together to form a tubular structure.

2. The self-compacting concrete impermeability testing device according to claim 1, characterized in that, The bottom of the outer tube (5) extends inward, and then its inner edge extends upward to form an annular bottom groove (6), which is detachably connected to the bottom of the arc plate (14). The top inner wall of the outer tube (5) is detachably connected to an "annular" end cap (12). The inner wall edge of the end cap (12) extends downward and cooperates with the inner wall of the outer tube (5) to form a top groove (7). The top groove (7) is detachably connected to the top of the arc plate (14).

3. The self-compacting concrete impermeability testing device according to claim 2, characterized in that, The top inner wall of the outer tube (5) is detachably threaded to the end cap (12). The top of the end cap (12) is provided with a screw hole (13), and a screwing tool is detachably connected in the screw hole (13).

4. The self-compacting concrete impermeability testing device according to claim 3, characterized in that, The screwing tool includes: Two spaced grip plates (17); Two screw rods (18) are located at both ends of the grip plate (17). One end and the middle part of the screw rod (18) are fixedly connected to the two grip plates (17) respectively, and the other end of the screw rod (18) is detachably connected to the screw hole (13).

5. The self-compacting concrete impermeability testing device according to claim 2, characterized in that, A plug (15) is provided on one side wall edge of the arc plate (14), and a slot (16) is provided on the other side wall edge of the arc plate (14). The plug (15) and the slot (16) are detachably connected.

6. The self-compacting concrete impermeability testing device according to claim 2, characterized in that, The bottom of the outer tube (5) extends outward to form a flange (8). The flange (8) is provided with a plurality of flange holes (9). The mold base (2) is provided with a detachable connecting rod (3) corresponding to the plurality of flange holes (9). The connecting rod (3) is arranged in a vertical direction. The connecting rod (3) selectively passes through the flange hole (9) and is locked by a locking component.

7. The self-compacting concrete impermeability testing device according to claim 6, characterized in that, The locking assembly includes a locking ring (10) rotatably connected to the upper surface of the flange (8), and the upper surface of the locking ring (10) is recessed downward to form a plurality of first inclined surfaces (11); The connecting rod (3) is recessed near the side wall of the locking ring (10) to form a second inclined surface (4). The locking ring (10) can rotate to achieve selective one-to-one sliding connection between a number of second inclined surfaces (4) and a number of first inclined surfaces (11).

8. The self-compacting concrete impermeability testing device according to claim 7, characterized in that, A limiting ring (19) is fixedly sleeved on the outer wall of the outer tube (5), and the lower surface of the limiting ring (19) is slidably connected to the upper surface of the locking ring (10). The side wall of the locking ring (10) is provided with a number of notches (20), and the number of notches (20) are connected to a number of first inclined surfaces (11). The connecting rod (3) selectively passes through the notches (20).

9. The self-compacting concrete impermeability testing device according to claim 8, characterized in that, The locking component also includes: A first connecting block (21) is fixedly connected to the locking ring (10), and a first connecting hole is provided on the first connecting block (21); A second connecting block (22) is fixedly connected to the flange (8), and the second connecting block (22) is provided with a second connecting hole; Fasteners (23) that are detachably connected to the first connection hole and the second connection hole.

10. The device for testing the impermeability of self-compacting concrete according to any one of claims 1 to 9, characterized in that, The top of the mold base (2) and the bottom of the mold are both provided with annular sealing grooves, and a sealing ring (24) is provided inside the sealing groove.

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