Testing device for peel strength of pre-paved waterproof coiled material and post-poured concrete

Abstract

The utility model relates to a device for testing the peel strength of pre-paved waterproof coiled materials and post-poured concrete. A plurality of coiled material samples are adhered to one side of a concrete test block side by side at intervals along the horizontal direction; the testing device comprises a connecting frame connected with a tensile machine, an adjusting frame freely arranged on the connecting frame in a sliding mode in the arrangement direction of the coiled material samples, and a fixing part, a leaning grid face is formed on the adjusting frame, and the fixing part drives the concrete test blocks to abut against the leaning grid face from the side away from the coiled material samples. And the to-be-clamped end of the coiled material sample and the tensile machine clamp are kept on the same vertical plane. On one hand, on the basis that concrete test blocks are accurately positioned on the adjusting frame, different coiled material samples can be rapidly switched for testing by moving the adjusting frame on the connecting frame, operation is easy and convenient, and the testing efficiency is greatly improved; on the other hand, automatic alignment adjustment of the axis between the coiled material sample and the tensile machine clamp can be achieved in the test process, and the accuracy of the test result is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of waterproof coiled materials, and in particular relates to a testing device for the peeling strength between pre-laid waterproof coiled materials and post-cast concrete. Background Art

[0002] Waterproofing membranes are commonly used in construction projects to prevent water from penetrating and damaging buildings. The quality of the bond between the membrane and the concrete directly impacts the reliability and durability of the entire structure. Effective surface treatment of the membrane can enhance its bond with concrete, thereby improving structural stability.

[0003] At present, there is a Chinese patent with publication number CN211905049U, which discloses a test device for the peeling strength of waterproof membrane and post-cast concrete, including a connecting device for connecting to a testing machine, the lower part of the connecting device is provided with a lateral opening slot for clamping the sample, and the upper part is provided with a cavity for installing a fixed clamping device; the fixed clamping device includes a fixed clamping column vertically installed in the cavity in a manner of up and down displacement, a lifting handle rod connected to the middle of the fixed clamping column in a manner perpendicular to the fixed clamping column, and a pop-up device installed above the lifting handle rod; the lower end of the fixed clamping column extends vertically downward through the connecting hole to the lateral opening slot; a connecting piece for connecting to the testing machine is provided at the top of the connecting device.

[0004] However, in actual testing, the existing technology has the following defects:

[0005] 1. Every time the specimen needs to be moved left or right, it is necessary to manually lift the handle to loosen the post-cast concrete specimen and then move it. This operation is cumbersome and inefficient.

[0006] 2. When moving the post-cast concrete test block, position deviation is likely to occur, resulting in the coiled material sample on the surface of the test block failing to coincide with the axis of the tensile testing machine, affecting the accuracy of the test data. Summary of the Invention

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a new test device for the peeling strength between pre-laid waterproofing membrane and post-cast concrete.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A test device for the peeling strength between pre-laid waterproofing membrane and post-poured concrete, wherein there are multiple membrane samples and they are bonded to one side of the concrete test block in a horizontal direction at intervals. The test device includes a connecting frame connected to a tensile testing machine, an adjusting frame freely slidingly arranged on the connecting frame along the arrangement direction of the membrane samples, and a fixing component, wherein a grid surface is formed on the adjusting frame, and the fixing component drives the concrete test block to press against the grid surface from the side away from the membrane sample, and keeps the clamped end of the membrane sample and the tensile testing machine fixture in the same vertical plane. As the tensile testing machine fixture applies tension in the up and down directions to the membrane sample, the component of the tension in the horizontal direction drives the adjusting frame to slide horizontally synchronously, and drives the longitudinal axis of the corresponding membrane sample to coincide with the axis of the tensile testing machine fixture.

[0010] According to a specific embodiment and preferred aspect of the present invention, the connecting frame is suspended from the upper end of the tensile testing machine, and the tensile testing machine clamp applies a tensioning force downward to the coiled material sample, thereby preventing the influence of the concrete test block's own gravity on the test data.

[0011] Preferably, a vertically extending connecting column connected to the tensile testing machine is provided at the upper end of the connecting frame. In the orthographic projection of the adjusting frame's movement, the centerline of the connecting column coincides with the centerline of the concrete test block. This effectively prevents the concrete test block from swaying back and forth during the test.

[0012] Preferably, the connecting frame is C-shaped, and a horizontally extending guide rail is fixedly provided at the bottom of the connecting frame, and the adjusting frame is slidably arranged on the guide rail.

[0013] According to another specific implementation and preferred aspect of the present invention, the adjustment frame includes a slide seat slidably connected to the guide rail, and a positioning guard extending vertically upward from one side of the slide seat, wherein the side wall of the positioning guard forms a guard surface. When placing materials, the concrete test block rests on the slide seat and the positioning guard from the bottom and side respectively.

[0014] Preferably, the positioning fence comprises a plurality of fence rods spaced side by side along the length of the guide rail, and during positioning, the concrete test block is synchronously abutted against the plurality of fence rods from the side, thereby ensuring accurate positioning of the concrete test block.

[0015] According to another specific implementation and preferred aspect of the present invention, the fixing component includes a pressing module, a fixing seat fixedly connected to the adjustment frame, and an operating member disposed on the fixing seat and used to drive the pressing module to press or release the concrete test block.

[0016] Preferably, during compression, the compression module contacts the side wall of the concrete test block to which the coiled material sample is bonded, and the compression module is located above each coiled material sample. In this arrangement, the concrete test block is subjected to friction compression while avoiding interference with the test.

[0017] Specifically, the fixed seat includes a first seat body extending horizontally from the upper end of the adjustment frame toward the direction away from the grid surface, a second seat body extending vertically downward from the end of the first seat body and located on the side of the concrete test block away from the grid surface, the clamping module is located between the second seat body and the concrete test block, and the operating member passes through the second seat body and is connected to the clamping module.

[0018] Furthermore, the operating member includes a pull rod that extends horizontally through the second base and is fixedly connected to the clamping module, and an elastic member that is sleeved on the pull rod and abuts between the second base and the clamping module. The elastic member has an elastic tendency to drive the clamping module to maintain pressure against the concrete test block. This makes operation simple and convenient, facilitating automatic and rapid clamping of the concrete test block.

[0019] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] Each time the test device of the prior art needs to move the sample left or right, it is necessary to manually lift the lifting handle to loosen the post-cast concrete test block, and then move it, which is cumbersome and inefficient. In addition, when moving the post-cast concrete test block, position deviation is likely to occur, resulting in the coiled material sample on the surface of the test block failing to coincide with the axis of the tensile testing machine, affecting the accuracy of the test data. The present application comprehensively designs the structure of the test device for the peeling strength of pre-laid waterproofing coiled material and post-cast concrete, cleverly solving the shortcomings and defects of the prior art. After adopting the test device, the connecting frame is connected to the tensile machine, and the concrete test block with multiple coiled material samples bonded to it is fixed on the adjusting The frame is placed on the grid surface and pressed against the grid surface, so that the end of the coiled material sample to be clamped and the tensile machine fixture are on the same vertical plane. When it is necessary to switch to different coiled material samples, the adjustment frame is directly slid so that the corresponding coiled material sample is moved to the top of the tensile machine fixture. When conducting the test, the tensile machine fixture is clamped to the end of the coiled material sample to be clamped and a tensioning force is applied in the up and down directions. If there is no position deviation of the coiled material sample, the test can be carried out directly. If there is a position deviation of the coiled material sample, the horizontal component of the tensioning force drives the adjustment frame to slide horizontally synchronously, thereby driving the longitudinal axis of the corresponding coiled material sample to coincide with the axis of the tensile machine fixture, completing the automatic alignment adjustment. Therefore, compared with the prior art, the present invention is based on the precise positioning of the concrete test block on the adjustment frame. By moving the adjustment frame on the connecting frame, different coiled material samples can be quickly switched for testing. The operation is simple and convenient, which greatly improves the test efficiency. On the other hand, it can realize the automatic alignment adjustment between the axis of the coiled material sample and the tensile machine fixture during the test, effectively improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the test device for the peeling strength between the pre-laid waterproof membrane and the post-cast concrete of the utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of the left side;

[0024] Figure 3 for Figure 1 The main schematic diagram of

[0025] Among them: 1. Connecting frame; 10. Connecting column; 11. Guide rail;

[0026] 2. Adjustment frame; 20. Sliding seat; m. Grid surface; 21. Positioning grid; 210. Grid rod;

[0027] 3. Fixing component; 30. Compression module; 31. Fixing seat; 311. First seat body; 312. Second seat body; 32. Operating member; 321. Pull rod; 322. Elastic member;

[0028] K, concrete test block; Y, coiled material test specimen. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0033] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0034] like Figures 1 to 3 As shown, this embodiment involves a test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete, which includes a connecting frame 1 connected to a tensile testing machine, an adjustment frame 2, and a fixing component 3; the test samples involved in this embodiment include a concrete test block K and a membrane sample Y.

[0035] Specifically, the concrete test block K is in the shape of a cuboid; there are a plurality of coiled material samples Y which are glued to one side wall of the concrete test block K in parallel and at intervals along the horizontal direction.

[0036] In this example, the connecting frame 1 is C-shaped and is suspended from the upper end on the tensile testing machine, wherein the upper end of the connecting frame 1 is provided with a connecting column 10 extending vertically and connected to the tensile testing machine, and the bottom of the connecting frame 1 is fixed with a guide rail 11 extending horizontally along the arrangement direction of the coiled material sample.

[0037] In this example, the adjustment frame 2 is slidably arranged on the guide rail 11 and can be freely slid along the arrangement direction of the coiled material sample, wherein a grid surface m is formed on the adjustment frame 2, and the fixing component 3 drives the concrete test block K to abut against the grid surface m from the side away from the coiled material sample Y, and keeps the clamped end of the coiled material sample Y and the tensile machine fixture in the same vertical plane. As the tensile machine fixture applies tension in the up and down directions to the coiled material sample Y, the component of the tension in the horizontal direction drives the adjustment frame 2 to slide horizontally synchronously, and drives the corresponding longitudinal axis of the coiled material sample Y to coincide with the axis of the tensile machine fixture.

[0038] In some specific embodiments, the adjustment frame 2 includes a slide 20 that is slidably connected to the guide rail 11 from the bottom, and a positioning guard 21 that extends vertically upward from one side of the slide 20, wherein the side wall of the positioning guard 21 forms a guard surface m. When placing the material, the concrete test block K rests on the slide 20 and the positioning guard 21 from the bottom and the side respectively, and in the orthographic projection of the moving direction of the adjustment frame 2, the center line of the connecting column 10 coincides with the center line of the concrete test block K; the tensile machine clamp clamps the end to be clamped of the coiled material sample from bottom to top, and the tensioning force applied to the coiled material sample is directed downward.

[0039] For ease of implementation, the positioning guardrail 21 includes a plurality of guardrail rods 210 spaced side by side along the length of the guide rail 11 . During positioning, the concrete test block K is synchronously pressed against the plurality of guardrail rods 210 from the side.

[0040] In this example, the fixing component 3 includes a pressing module 30 , a fixing base 31 fixedly connected to the adjusting frame 2 , and an operating member 32 disposed on the fixing base 31 and used to drive the pressing module 30 to press or release the concrete test block K.

[0041] In some specific embodiments, the clamping module 30 is in the shape of a rectangular parallelepiped extending horizontally along the movement direction of the adjusting frame 2; the fixed seat 31 includes a first seat body 311 extending horizontally from the upper end of the adjusting frame 2 toward the direction away from the grid surface m, and a second seat body 312 extending vertically downward from the end of the first seat body 311 and located on the side of the concrete test block K away from the grid surface m. The clamping module 30 is located between the second seat body 312 and the concrete test block K, and the operating member 32 passes through the second seat body 312 and is connected to the clamping module 30. When clamping, the clamping module 30 contacts the side wall of the concrete test block K to which the coiled material sample Y is adhered, and the clamping module 30 is located above each coiled material sample Y.

[0042] Furthermore, the operating member 32 includes a pull rod 321 that passes horizontally through the second base 312 and is fixedly connected to the compression module 30, and an elastic member 322 that is sleeved on the pull rod 321 and abuts between the second base 312 and the compression module 30. The elastic member 322 is a spring and has an elastic tendency to drive the compression module 30 to maintain compression toward the concrete test block K. In other words, by pulling the pull rod 321 to pull the compression module 30 away from the concrete test block K, the concrete test block K can be released; when the pull rod 321 is released, the elastic member 322 returns to its original position and drives the compression module 30 to compress the concrete test block K.

[0043] In summary, after adopting the test device, the connecting frame is connected to the tensile testing machine, and the concrete test block with multiple coiled material samples bonded to it is fixed on the adjusting frame and pressed against the grid surface, so that the clamping end of the coiled material sample and the tensile testing machine fixture are on the same vertical plane. When it is necessary to switch different coiled material samples, the adjusting frame is directly slid so that the corresponding coiled material sample is moved directly above the tensile testing machine fixture; when conducting the test, the tensile testing machine fixture is clamped to the clamping end of the corresponding coiled material sample and a tensioning force is applied in the up and down directions. If there is no positional deviation of the coiled material sample, the test can be carried out directly; if there is a positional deviation of the coiled material sample, the horizontal component of the tensioning force drives the adjusting frame to slide horizontally synchronously, thereby driving the longitudinal axis of the corresponding coiled material sample to coincide with the axis of the tensile testing machine fixture, completing the automatic alignment adjustment. Therefore, compared with the prior art, the present invention, on the one hand, is based on the precise positioning of the concrete test block on the adjustment frame. By moving the adjustment frame on the connecting frame, different coiled material samples can be quickly switched for testing, which is simple and convenient to operate and greatly improves the test efficiency; on the other hand, it can realize automatic alignment adjustment of the axis between the coiled material sample and the tensile machine fixture during the test, effectively improving the accuracy of the test results; thirdly, it can avoid the influence of the concrete test block's own gravity on the test data; fourthly, it can effectively prevent the concrete test block from swinging back and forth during the test; fifthly, under the layout of the clamping module, the concrete test block is subjected to resistance compression while avoiding interference with the test; sixthly, it is simple and convenient to operate, and is easy to realize automatic and rapid fixation of the concrete test block.

[0044] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A test device for the peel strength between pre-laid waterproofing membrane and post-cast concrete, wherein a plurality of membrane samples are bonded to one side of a concrete test block in parallel and at intervals along the horizontal direction, and characterized by: The test device includes a connecting frame connected to the tensile testing machine, an adjusting frame freely slidingly arranged on the connecting frame along the arrangement direction of the coiled material sample, and a fixing component, wherein the adjusting frame is formed with a grid surface, and the fixing component drives the concrete test block to press against the grid surface from the side away from the coiled material sample, and keeps the clamped end of the coiled material sample and the tensile testing machine fixture on the same vertical plane. As the tensile testing machine fixture applies tension in the up and down directions to the coiled material sample, the component of the tension in the horizontal direction drives the adjusting frame to slide horizontally synchronously, and drives the longitudinal axis of the corresponding coiled material sample to coincide with the axis of the tensile testing machine fixture.

2. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 1, characterized in that: The connecting frame is suspended on the tensile testing machine from the upper end portion, and the tensile force applied by the tensile testing machine clamp to the coiled material sample is in a downward direction.

3. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 2, characterized in that: The upper end of the connecting frame is provided with a connecting column extending vertically and connected to the tensile machine. In the orthographic projection of the moving direction of the adjusting frame, the center line of the connecting column coincides with the center line of the concrete test block.

4. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 1, 2 or 3, characterized in that: The connecting frame is C-shaped, and a horizontally extending guide rail is fixedly provided at the bottom of the connecting frame, and the adjusting frame is slidably arranged on the guide rail.

5. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 4, characterized in that: The adjustment frame includes a slide seat slidably connected to the guide rail, and a positioning fence extending vertically upward from one side of the slide seat, wherein the side wall of the positioning fence forms the fence surface. When placing materials, the concrete test block rests on the slide seat and the positioning fence from the bottom and side surfaces respectively.

6. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 5, characterized in that: The positioning guardrail comprises a plurality of guardrail rods spaced side by side along the length direction of the guide rail. During positioning, the concrete test block is synchronously pressed against the plurality of guardrail rods from the side.

7. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 1, characterized in that: The fixing component includes a pressing module, a fixing seat fixedly connected to the adjusting frame, and an operating member arranged on the fixing seat and used to drive the pressing module to press or separate from the concrete test block.

8. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 7, characterized in that: During compaction, the compaction module contacts the side wall of the concrete test block to which the coiled material sample is adhered, and the compaction module is located above each coiled material sample.

9. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 7, characterized in that: The fixing seat includes a first seat body extending horizontally from the upper end of the adjustment frame toward the direction away from the grid surface, and a second seat body extending vertically downward from the end of the first seat body and located on the side of the concrete test block away from the grid surface. The clamping module is located between the second seat body and the concrete test block, and the operating member passes through the second seat body and is connected to the clamping module.

10. The test device for the peeling strength between pre-laid waterproof membrane and post-cast concrete according to claim 9, characterized in that: The operating member includes a pull rod that passes through the second seat body in a horizontal direction and is fixedly connected to the clamping module, and an elastic member that is sleeved on the pull rod and abuts between the second seat body and the clamping module, wherein the elastic member has an elastic tendency to drive the clamping module to maintain compression toward the concrete test block.

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