A device for testing water immersion volume stability of a building material

Abstract

The utility model discloses a building material water immersion volume stability testing arrangement belongs to building material water immersion volume stability testing technical field, including test bucket, squeeze water tray, contact piece, support and test piece, through setting up squeeze water tray in test bucket, and being equipped with contact piece on squeeze water tray, the displacement amount of contact piece in vertical direction is detected with micrometer, when building material expands under the water immersion condition, will directly push squeeze water tray and move upwards, thereby driving contact piece and lifting micrometer, can indirectly, accurately reflect the volume stability of building material, avoids depending on manual visual measurement, and the test is more objective and reliable.

Description

Technical Field

[0001] This utility model relates to the field of water immersion volume stability testing technology for building materials, and specifically to a water immersion volume stability testing device for building materials. Background Technology

[0002] In construction engineering, cylindrical ring-shaped materials are widely used in tunnel linings, underground utility tunnels, foundation support, and structural connections. These materials are typically exposed to humid or even completely submerged environments for extended periods, and their volumetric stability directly affects the structure's sealing, load-bearing capacity, and durability. If the material undergoes significant expansion or contraction under water immersion conditions, it can easily lead to misalignment at joints and cracking at connection gaps, resulting in leakage, water damage, or even structural damage.

[0003] Current research on the water stability of materials largely focuses on mechanical properties or water absorption rates, lacking systematic testing methods for volumetric stability. This is especially true for ring-shaped structural materials, whose unique geometry makes it difficult for traditional testing methods for flat building materials to accurately reflect their dimensional changes under actual service conditions. Utility Model Content

[0004] The purpose of this invention is to provide a water immersion volume stability testing device for building materials, which solves the problem in the prior art that it is difficult to simulate the real volume change of ring-shaped or complex structural materials under long-term water immersion conditions.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A device for testing the volumetric stability of building materials under water immersion includes: A test barrel, with an opening at the top; A dewatering tray is coaxially disposed inside the test barrel; the dewatering tray is used to place building materials; and the dewatering tray has several dewatering holes. At least one contact element is vertically disposed on the dewatering tray; A support bracket is disposed at the upper end of the test barrel; The test piece is detachably mounted on the bracket, and the measuring end of the test piece abuts against the contact member to detect the displacement of the contact member in the vertical direction. When the building material expands under water immersion conditions, it can push the water-squeezing disc upward, and through the contact element, it can drive the test piece to generate displacement, thereby realizing the test of the water immersion volume stability of the building material.

[0006] A further technical solution is that the dewatering disc is provided with at least one pair of spliced ​​arc-shaped rings.

[0007] A further technical solution is that the upper end of the test barrel is provided with a coaxial limiting ring; the bracket includes an arc-shaped bottom strip and a top frame; the arc-shaped bottom strip has an arc-shaped bottom groove coaxial with the limiting ring; the arc-shaped bottom strip is snapped onto the limiting ring through the arc-shaped bottom groove; the top frame is fixed to the arc-shaped bottom strip; the arc-shaped bottom strip is provided with a fixing member for fixing the test piece.

[0008] A further technical solution is that the fixing component is a screw; the top frame has a fixing hole located directly above the contact component; the top frame has a fastening hole that is horizontally connected to the fixing hole; the test end of the test piece passes through the fixing hole and contacts the contact component below; one end of the screw is threaded into the fastening hole and abuts against the test piece.

[0009] A further technical solution includes a base; the base is provided with at least two vertically arranged limiting rods; the test barrel is provided with a limiting plate on its periphery; a limiting groove is opened on one side of the limiting plate; the limiting plate is engaged with the limiting rod through the limiting groove; a wing nut is threaded on the limiting rod to press down the limiting plate.

[0010] A further technical solution is that the contact element includes a contact post; the upper end of the contact post has a contact groove; a contact rod is threaded into the contact groove; and the upper end of the contact rod contacts the test end of the test piece.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By installing a water-squeezing disc inside the test tank, and placing a contact element on the disc, a dial indicator is used to detect the vertical displacement of the contact element. When the building material expands under water immersion conditions, it directly pushes the water-squeezing disc upwards, thereby causing the contact element to lift the dial indicator. This indirectly and accurately reflects the volumetric stability of the building material, avoiding reliance on manual visual measurement, making the test more objective and reliable. Compared with existing methods that rely on simple immersion observation or manual measurement, this device can more intuitively, dynamically, and accurately simulate the real volume changes of cylindrical rings or complex structural building materials under long-term water immersion conditions, effectively overcoming the problem that existing technologies cannot accurately reflect the volumetric stability of materials. Attached Figure Description

[0012] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration: Figure 1 This is a three-dimensional drawing of the present invention.

[0013] Figure 2 A three-dimensional diagram of the internal structure of the test barrel of this utility model. Figure 3 This is a three-dimensional view of the contact element of this utility model.

[0014] Icons: 1. Test bucket, 2. Squeezing tray, 3. Contact element, 4. Bracket, 5. Test element, 6. Building material, 7. Arc ring, 8. Limiting ring, 9. Arc bottom strip, 10. Top frame, 11. Screw, 12. Base, 13. Limiting rod, 14. Limiting plate, 15. Limiting groove, 16. Wing nut, 17. Contact post, 18. Contact rod. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Example: like Figures 1-2 As shown, this utility model provides a water immersion volume stability testing device for building material 6, including a test bucket 1, a squeezing pan 2, a contact element 3, a support 4, and a test piece 5; the test bucket 1 has an opening at the top, a diameter of 100mm, and a height of 200mm; the squeezing pan 2 is coaxially arranged inside the test bucket 1; the squeezing pan 2 is used to place the building material 6; the squeezing pan 2 has several squeezing holes; the contact element 3 is vertically fixed on the squeezing pan 2; the support 4 is located at the upper end of the test bucket 1; the test piece 5 is detachably mounted on the support 4, and the measuring end of the test piece 5 abuts against the contact element 3. The test piece 5 is used to detect the vertical displacement of the contact 3. Specifically, it is a digital display dial indicator, which is electrically connected to a computer terminal and can directly display data on the computer. When the building material 6 expands under water immersion conditions, it can push the water-squeezing disc 2 upward, and drive the test piece 5 to generate displacement through the contact 3, thereby realizing the test of the water immersion volume stability of the building material 6. In this embodiment, there are three contact pieces 3 and three test pieces 5. By setting three contact pieces 3, test results can be collected from different areas of the building material 6, reducing the possible error of a single contact piece 3.

[0017] The principles and beneficial effects of the above technical solution: Place the building material 6 inside the test bucket 1, and place the water-squeezing plate 2 on the building material 6. Several water-squeezing holes on the water-squeezing plate 2 can smoothly drain excess water generated during the soaking process, preventing water from stagnating between the water-squeezing plate 2 and the building material 6, and preventing the water-squeezing plate 2 from floating due to buoyancy interference.

[0018] By setting a squeezing pan 2 inside the test tank 1, and installing a contact element 3 on the squeezing pan 2, a dial indicator is used to detect the vertical displacement of the contact element 3. When the building material 6 expands under water immersion conditions, it directly pushes the squeezing pan 2 upward, thereby causing the contact element 3 to lift the dial indicator. This indirectly and accurately reflects the volume stability of the building material 6, avoiding reliance on manual visual measurement, making the test more objective and reliable. Compared with existing methods that rely on simple immersion observation or manual measurement, this device can more intuitively, dynamically, and accurately simulate the real volume change of cylindrical rings or complex structure building materials 6 under long-term water immersion conditions, effectively overcoming the problem that existing technologies cannot accurately reflect the volume stability of materials.

[0019] The water-squeezing hole allows excess water generated by the building material 6 during immersion to be discharged smoothly, preventing water from accumulating between the water-squeezing plate 2 and the building material 6, ensuring that the building material 6 is subjected to uniform force, and reducing buoyancy interference, making the test data more stable.

[0020] In this embodiment, the dewatering tray 2 is provided with at least one pair of spliced ​​arc-shaped rings 7, and the building material 6 is placed on the arc-shaped rings 7. In this embodiment, two pairs of arc-shaped rings 7 are selected.

[0021] The principles and beneficial effects of the above technical solution: The building material 6 is placed on the arc-shaped ring 7 to provide weight and prevent the water-squeezing plate 3 from tilting or slipping during the soaking process, thus ensuring the accuracy of the displacement test.

[0022] In this embodiment, the upper end of the test barrel 1 is provided with a coaxial limiting ring 8; the bracket 4 includes an arc-shaped bottom strip 9 and a top frame 10; the arc-shaped bottom strip 9 has an arc-shaped bottom groove coaxial with the limiting ring 8; the arc-shaped bottom strip 9 is snapped onto the limiting ring 8 through the arc-shaped bottom groove; the top frame 10 is fixed to the arc-shaped bottom strip 9; the arc-shaped bottom strip 9 is provided with a fixing member for fixing the test piece 5.

[0023] The principles and beneficial effects of the above technical solution: The snap-fit ​​structure between the limiting ring 8 and the arc-shaped bottom strip 9 allows the bracket 4 to be easily installed on the test barrel 1, while ensuring that the bracket 4 and the test barrel 1 are coaxial, thereby ensuring that the dial indicator and the contact part 3 are accurately aligned.

[0024] In this embodiment, the fixing element is a screw 11; the top frame 10 has a fixing hole located directly above the contact 3; there are three fixing holes; the top frame 10 has three fastening holes that are horizontally connected to the corresponding fixing holes; the test end of the test piece 5 passes through the fixing hole and contacts the contact 3 below; it enters the corresponding fastening hole through the threaded connection of one end of the corresponding screw 11 and abuts against the corresponding test piece 5.

[0025] The principles and beneficial effects of the above technical solution: Through the cooperation of the fixing hole and the fastening hole, the screw 11 can reliably fix the test piece 5 on the top frame 10, preventing the test piece 5 from shifting or loosening during the test, ensuring that the dial indicator measuring end and the contact piece 3 maintain continuous and stable contact, thereby improving the accuracy and repeatability of the test results.

[0026] In this embodiment, a base 12 is also included; at least two vertically arranged limiting rods 13 are provided on the base 12; a limiting plate 14 is provided on the periphery of the test barrel 1; a limiting groove 15 is opened on one side of the limiting plate 14; the limiting plate 14 is locked onto the limiting rod 13 through the limiting groove 15; a wing nut 16 that presses down on the limiting plate 14 is threaded on the limiting rod 13.

[0027] The principles and beneficial effects of the above technical solution: The base 12 and the limiting rod 13 form a lower stable frame. The limiting plate 14 is tunably connected to the limiting rod 13 through the limiting groove 15. After the wing nut 16 is tightened, it can press the limiting plate 14, thereby encircling and limiting the test barrel 1, preventing the test barrel 1 from shaking during water immersion or under force, and improving the stability of the entire testing device.

[0028] In this embodiment, the contact element 3 includes a contact post 17; the upper end of the contact post 17 has a contact groove; a contact rod 18 is threaded into the contact groove; the upper end of the contact rod 18 contacts the test end of the test piece 5.

[0029] The principles and beneficial effects of the above technical solution: The contact post 17 is fixedly connected to the dewatering tray 2, and the contact rod 18 is threadedly connected in the contact groove. The extension length of the contact rod 18 can be adjusted as needed to ensure reliable contact with the measuring end of the dial indicator.

[0030] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A device for testing the volumetric stability of building materials under water immersion, characterized in that: include: A test barrel, with an opening at the top; A dewatering tray is coaxially disposed inside the test bucket; the dewatering tray is used to place building materials. The dewatering disc has several dewatering holes; At least one contact element is vertically disposed on the dewatering tray; A support bracket is disposed at the upper end of the test barrel; The test piece is detachably mounted on the bracket, and the measuring end of the test piece abuts against the contact member to detect the displacement of the contact member in the vertical direction. When the building material expands under water immersion conditions, it can push the water-squeezing disc upward, and through the contact element, it can drive the test piece to generate displacement, thereby realizing the test of the water immersion volume stability of the building material.

2. The water immersion volume stability testing device for building materials according to claim 1, characterized in that: The dewatering disc is provided with at least one pair of spliced ​​arc-shaped rings.

3. The water immersion volume stability testing device for building materials according to claim 1, characterized in that: The upper end of the test barrel is provided with a coaxial limiting ring; the bracket includes an arc-shaped bottom strip and a top frame; the arc-shaped bottom strip has an arc-shaped bottom groove coaxial with the limiting ring; the arc-shaped bottom strip is snapped onto the limiting ring through the arc-shaped bottom groove; the top frame is fixed to the arc-shaped bottom strip; the arc-shaped bottom strip is provided with a fixing member for fixing the test piece.

4. The water immersion volume stability testing device for building materials according to claim 3, characterized in that: The fixing component is a screw; the top frame has a fixing hole located directly above the contact; the top frame has a fastening hole that is horizontally connected to the fixing hole; the test end of the test piece passes through the fixing hole and contacts the contact below; one end of the screw is threaded into the fastening hole and abuts against the test piece.

5. The water immersion volume stability testing device for building materials according to claim 1, characterized in that: It also includes a base; the base is provided with at least two vertically arranged limiting rods; the test barrel is provided with a limiting plate on its periphery; a limiting groove is opened on one side of the limiting plate; the limiting plate is engaged with the limiting rod through the limiting groove; a wing nut is threaded on the limiting rod to press down the limiting plate.

6. The water immersion volume stability testing device for building materials according to claim 1, characterized in that: The contact element includes a contact post; the upper end of the contact post has a contact groove; a contact rod is threaded into the contact groove; the upper end of the contact rod contacts the test end of the test piece.

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