Waterproof performance testing device
By designing a waterproof performance testing device and using a water pressure loading system to evaluate the comprehensive performance of waterproof materials, the problem of inconvenient operation and poor results of existing testing methods has been solved, and a rapid and accurate waterproof performance evaluation has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CIVIL ENG CONSTR CORP
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-21
AI Technical Summary
Existing waterproof testing methods are inconvenient to operate and have poor testing results, and cannot effectively assess the joint seepage, water seepage and water pressure peeling ability of waterproof materials.
A waterproof performance testing device was designed, including a waterproof structure, a concrete slab, and a water pressure loading component. The water pressure loading system, consisting of a water tank, an air compressor, a buffer tank, a one-way valve, and a pressure gauge, can simulate the water pressure under actual working conditions and test the comprehensive performance of the waterproof material.
It enables rapid and accurate evaluation of the waterproof performance of waterproof materials, including joint seepage, water seepage, and resistance to water pressure peeling, providing reliable testing data and solving the problems of limited functionality and application range of traditional equipment.
Smart Images
Figure CN224151908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building waterproofing testing technology, and more specifically, to a waterproofing performance testing device. Background Technology
[0002] One of the key technical challenges in the construction of underground structures is waterproofing. To prevent structural leakage, it is usually necessary to overlap the joints of the waterproofing membrane and use adhesive to enhance the waterproofing effect of the joints. In addition, to prevent water from seeping through the interface between the waterproofing membrane and the concrete, double-sided self-adhesive waterproofing membranes or a combination of waterproofing membrane and adhesive are also used. The overall performance of the waterproofing materials, joint seepage, and interface water seepage directly affect the waterproofing effect of the underground structure.
[0003] However, existing detection methods are inconvenient to operate and have poor detection results. Utility Model Content
[0004] The purpose of this invention includes, for example, providing a waterproof performance testing device that can efficiently and quickly perform waterproof testing.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] In a first aspect, this utility model provides a waterproof performance testing device, comprising:
[0007] Waterproof structure, concrete slab, water pressure loading components;
[0008] Along the thickness direction of the concrete slab, through-holes for water injection are provided on the concrete slab, with the water injection holes forming a first opening and a second opening on the surface of the concrete slab respectively; a waterproof structure is provided on the side of the concrete slab and covers and fits the second opening of the water injection hole.
[0009] The water pressure loading assembly includes a water tank, an air compressor, a buffer tank, a first check valve, a second check valve, and a first pressure gauge; the outlet of the water tank is connected to the buffer tank in sequence through a first pipe and the first check valve; the outlet of the buffer tank is connected to the first opening of the water injection hole in sequence through a second check valve and a second pipe; the outlet of the air compressor is connected to the buffer tank through a third pipe; and the first pressure gauge is installed on the second pipe.
[0010] In an optional embodiment, the waterproof structure includes a substrate layer, which may include a waterproof membrane or a sprayed waterproof film.
[0011] In an optional embodiment, the waterproof structure further includes an adhesive layer disposed on the side of the substrate layer near the second opening.
[0012] In an optional embodiment, the thickness of the adhesive layer is 2-4 mm.
[0013] In an alternative embodiment, the substrate layer is bonded or sprayed onto the surface of the concrete slab to cover and conform to the second opening.
[0014] In an optional embodiment, the dimensions of the waterproof structure are the same as the projected dimensions of the concrete slab along its thickness direction.
[0015] In an alternative implementation, the water injection hole is located at the center of the concrete slab.
[0016] In an optional embodiment, a water pump is also included, which is disposed on the first pipeline; and the water pump is located between the water tank and the first check valve.
[0017] In an optional embodiment, a second pressure gauge is also included, which is disposed on the buffer tank.
[0018] In an optional embodiment, an adapter is also included, which is disposed at the outlet of the second pipe, and the second pipe is detachably disposed at the first opening of the water injection hole via the adapter.
[0019] The beneficial effects of this utility model embodiment include, for example:
[0020] The waterproof performance testing device of this solution includes a waterproof structure, a concrete slab, and a water pressure loading component. The water pressure loading component includes a water tank, an air compressor, a buffer tank, a first one-way valve, a second one-way valve, and a first pressure gauge. The air compressor pressurizes the water in the pipeline, thereby achieving step-by-step pressurization to a set value through the water pressure loading system, simulating the water pressure action of the waterproof slab under actual working conditions. The first and second one-way valves ensure that the water is sufficiently pressurized in the buffer tank, providing a continuous and stable water pressure to the injection holes. The first pressure gauge allows for timely monitoring of the water pressure in the injection holes. In summary, this solution provides a compact, multi-scenario water pressure testing device for comprehensive waterproof material performance, solving the problems of limited functionality and applicability of traditional testing equipment. This includes testing the joint seepage and water leakage phenomena of waterproof materials, as well as their resistance to water pressure peeling, thereby verifying the applicability and reliability of the waterproof materials. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the waterproof performance testing device according to an embodiment of the present invention;
[0023] Figure 2 This is a structural schematic diagram of the waterproof performance testing device from another perspective, representing an embodiment of the present invention.
[0024] Icons: 11-Waterproof structure; 12-Water injection hole; 12a-First opening; 12b-Second opening; 13-Concrete slab; 14-Hydraulic loading assembly; 15-Water tank; 16-Air compressor; 17-Buffer tank; 18-Water pump; 19-Adapter; 110-First check valve; 120-Second check valve; 210-First pressure gauge; 220-Second pressure gauge; 310-First pipe; 320-Second pipe; 330-Third pipe. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.
[0029] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0030] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0031] Please refer to Figure 1 This embodiment provides a waterproof performance testing device, including a waterproof structure 11, a concrete slab 13, and a water pressure loading component 14;
[0032] Along the thickness direction of the concrete slab 13, a through water injection hole 12 is provided on the concrete slab 13. The water injection hole 12 forms a first opening 12a and a second opening 12b on the surface of the concrete slab 13 respectively. The waterproof structure 11 is provided on the side of the concrete slab 13 and covers and fits the second opening 12b of the water injection hole 12.
[0033] The water pressure loading assembly 14 includes a water tank 15, an air compressor 16, a buffer tank 17, a first check valve 110, a second check valve 120, and a first pressure gauge 210. The outlet of the water tank 15 is connected to the buffer tank 17 in sequence through a first pipe 310 and the first check valve 110. The outlet of the buffer tank 17 is connected to the first opening 12a of the water injection hole 12 in sequence through a second check valve 120 and a second pipe 320. The outlet of the air compressor 16 is connected to the buffer tank 17 through a third pipe 330. The first pressure gauge 210 is installed on the second pipe 320.
[0034] The air compressor 16 of this waterproof performance testing device can pressurize the water in the pipeline, thereby achieving step-by-step pressurization to a set value through a water pressure loading system, simulating the water pressure action of the waterproof membrane under actual working conditions. The first one-way valve 110 and the second one-way valve 120 ensure that the water is sufficiently pressurized in the buffer tank 17, thus providing a continuous and stable water pressure for the water injection hole 12. The first pressure gauge 210 can observe the water pressure in the water injection hole 12 in a timely manner. This provides a compact, multi-scenario water pressure simulation device for comprehensive waterproof material performance testing, solving the problems of limited functionality and applicability of traditional testing equipment. This includes testing the joint seepage and water leakage phenomena of waterproof materials, as well as their resistance to water pressure peeling, thereby verifying the applicability and reliability of the waterproof material.
[0035] Please continue reading. Figure 1 and Figure 2 To learn more about the structural details of the waterproof performance testing device.
[0036] In an optional embodiment, the waterproof structure 11 includes a substrate layer, which may include a waterproof membrane or a sprayed waterproof film. That is, the waterproof structure 11 may be a separate waterproof membrane, waterproof film, etc.
[0037] In an alternative embodiment, the substrate layer is bonded or sprayed onto the surface of the concrete slab 13 to cover and conform to the second opening 12b.
[0038] In an optional embodiment, the waterproof structure 11 further includes an adhesive layer disposed on the side of the substrate layer near the second opening 12b. In summary, the waterproof structure 11 can be a double-sided self-adhesive waterproof membrane, or a waterproof membrane + adhesive (i.e., a non-adhesive waterproof membrane bonded to a concrete slab with glue), or a combination of sprayed waterproof membrane (i.e., a liquid sprayed onto the concrete surface, possessing adhesive properties, which cures after a period of time to form a waterproof membrane layer).
[0039] In an optional embodiment, the thickness of the adhesive layer is 2-4 mm.
[0040] In an optional embodiment, the dimensions of the waterproof structure 11 are the same as the projected dimensions of the concrete slab 13 along the thickness direction of the concrete slab 13.
[0041] In an optional embodiment, the water injection hole 12 is located at the center of the concrete slab 13.
[0042] Optional, concrete slab 13: dimensions 300mm × 800mm, thickness 100mm. A 10mm diameter circular hole is drilled at the center of concrete slab 13, at a distance of 150mm × 400mm, serving as a water inlet. The height of the hole is 100mm. Waterproofing membrane and adhesive: A waterproofing membrane, with dimensions 200mm × 300mm or the same as the concrete slab 13, is adhered to concrete slab 13. Adhesive is used for bonding, with an overlap width of 50mm and an adhesive thickness of 3mm.
[0043] In an optional embodiment, the waterproof performance testing device further includes a water pump 18, which is disposed on the first pipeline 310 and located between the water tank 15 and the first one-way valve 110. This improves the water transport capacity in the pipeline.
[0044] In an optional embodiment, the waterproof performance testing device further includes a second pressure gauge 220, which is mounted on the buffer tank 17. This helps to ensure the stability of the water pressure in the buffer tank 17.
[0045] In an optional embodiment, the waterproof performance testing device further includes an adapter 19, which is disposed at the outlet of the second pipe 320, and the second pipe 320 is detachably disposed at the first opening 12a of the water injection hole 12 via the adapter 19. This facilitates installation and removal from the water injection hole 12. Specific Implementation
[0047] Example 1: Impermeability Test
[0048] Cleaning and preparation: First, clean the surface of the concrete slab 13 to ensure that there are no impurities, dust or other substances that may affect the adhesion of the waterproofing slab.
[0049] Waterproofing membrane bonding: The waterproofing material (self-adhesive waterproofing membrane and waterproofing coating) is bonded / sprayed onto the surface of the concrete slab 13. The size of the waterproofing material is the same as that of the concrete slab 13 (300mm×800mm).
[0050] Standard curing: Curing for 7 days under standard conditions to ensure that the strength of the adhesive / waterproof coating meets design requirements.
[0051] Pressurization and Pressure Holding: After the waterproof membrane is bonded, water is injected into the water injection holes 12 on the concrete slab 13 through the water pipe and pressurized. The water pressure is gradually increased by the air compressor 16 until the set test pressure is reached (0.6MPa is specified in "Test Methods for Waterproof Coatings for Buildings" (GB / T16777-2008)). Then the pipeline valve is closed to maintain the pressure.
[0052] Observation and Recording: During the pressure holding process, observe whether there is water penetration on the surface of the waterproof material. If water seepage is found, record the location and amount of leakage, record the time of the first leakage (e.g., 100 days), and evaluate the sealing performance of the waterproof material.
[0053] Example 2: Joint Waterproofing Test
[0054] Cleaning and preparation: Clean the surface of the concrete slab 13 to ensure that the surface is smooth and free of impurities, so as to facilitate the bonding of the waterproof board.
[0055] Waterproofing membrane bonding: Bond the second and third waterproofing membranes according to the above structure, ensuring an overlap width of 50mm between each membrane and an adhesive thickness of 3mm. Each waterproofing membrane should be the same size as the first one.
[0056] Bonding: After bonding, apply appropriate pressure to ensure that the waterproof membrane is tightly bonded to the surface of the concrete slab 13, and to ensure the sealing of the joint.
[0057] Standard curing: Curing for 7 days under standard conditions to ensure the adhesive strength meets design requirements.
[0058] Water pressure loading test: After the waterproof membrane is bonded, water is injected into the water injection hole 12 on the concrete slab 13 through the water pipe and pressurized. The water pressure is gradually increased by the air compressor 16 until the set test pressure is reached. Then, the pipeline valve is closed to maintain the pressure.
[0059] Observation and recording: During the water pressure loading process, observe whether there are any problems such as water leakage, bulging or swelling at the joint of the waterproof membrane, record relevant data and evaluate the waterproof performance of the joint of the waterproof membrane.
[0060] Example 3: Water pressure peel test
[0061] Cleaning and preparation: Clean the surface of the concrete slab 13 to ensure that the bonding area between the waterproofing board and the concrete slab 13 is clean and flat.
[0062] Waterproofing membrane bonding: Bond a single piece of waterproofing membrane, the same size as the concrete slab 13. Use an appropriate adhesive to ensure a firm bond.
[0063] Apply appropriate pressure: After bonding, apply appropriate pressure to ensure that the waterproof membrane is tightly bonded to the surface of the concrete slab 13.
[0064] Standard curing: After bonding, cure for 7 days under standard conditions to ensure that the adhesive reaches the expected strength.
[0065] Water pressure loading test: After the curing period, apply water pressure in stages using air compressor 16, and observe whether there is any bulging or swelling on one side of the waterproof membrane, and check whether there is any separation or water seepage between the waterproof membrane and the concrete slab 13. If no separation occurs, apply water pressure to the next level using air compressor 16.
[0066] Observation and Recording: During the water pressure loading process, carefully observe whether the waterproof membrane peels off or leaks, and record the changes during the test to evaluate its ability to resist water pressure peeling.
[0067] In summary, this utility model provides a waterproof performance testing device, which has at least the following advantages:
[0068] The waterproof performance testing device and method of this invention can effectively and comprehensively test the waterproof performance of waterproof membranes and their joints. Through impermeability tests, joint waterproofing tests, and water pressure peel tests, the device can simulate the actual usage conditions of the waterproof membrane, providing a reliable testing basis for the application of waterproof materials.
[0069] Furthermore, the testing device of this invention has a simple structure and is easy to operate. It can quickly and accurately evaluate the waterproofing effect of waterproofing materials at joints and interfaces in underground structures, and has broad application prospects.
[0070] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A waterproof performance testing device, characterized by, include: Waterproof structure (11), concrete slab (13), water pressure loading assembly (14); Along the thickness direction of the concrete slab (13), a through water injection hole (12) is provided on the concrete slab (13). The water injection hole (12) forms a first opening (12a) and a second opening (12b) on the surface of the concrete slab (13); the waterproof structure (11) is provided on the side of the concrete slab (13) and covers and fits the second opening (12b) of the water injection hole (12). The water pressure loading assembly (14) includes a water tank (15), an air compressor (16), a buffer tank (17), a first check valve (110), a second check valve (120), and a first pressure gauge (210). The outlet of the water tank (15) is connected to the buffer tank (17) in sequence through a first pipe (310) and the first check valve (110). The outlet of the buffer tank (17) is connected to the first opening (12a) of the water injection hole (12) in sequence through the second check valve (120) and the second pipe (320). The outlet of the air compressor (16) is connected to the buffer tank (17) through a third pipe (330). The first pressure gauge (210) is installed on the second pipe (320).
2. The waterproof performance testing device according to claim 1, characterized in that: The waterproof structure (11) includes a substrate layer, which includes a waterproof board or a sprayed waterproof membrane.
3. The waterproof performance testing device according to claim 2, characterized in that: The waterproof structure (11) further includes an adhesive layer disposed on the side of the substrate layer near the second opening (12b).
4. The waterproof performance testing device according to claim 3, characterized in that: The thickness of the adhesive layer is 2-4 mm.
5. The waterproof performance testing device according to claim 2, characterized in that: The substrate layer is applied to the surface of the concrete slab (13) by bonding or spraying to cover and fit the second opening (12b).
6. The waterproof performance testing device according to claim 1, characterized in that: Along the thickness direction of the concrete slab (13), the dimensions of the waterproof structure (11) are the same as the projected dimensions of the concrete slab (13).
7. The waterproof performance testing device according to claim 1, characterized in that: The water injection hole (12) is located at the center of the concrete slab (13).
8. The waterproof performance testing device according to claim 1, characterized in that: It also includes a water pump (18), which is installed on the first pipe (310); and the water pump (18) is located between the water tank (15) and the first one-way valve (110).
9. The waterproof performance testing device according to claim 1, characterized in that: It also includes a second pressure gauge (220) which is disposed on the buffer tank (17).
10. The waterproof performance testing device according to claim 1, characterized in that: Also included is an adapter (19) provided at the outlet of the second conduit (320), the second conduit (320) being removably provided to the first opening (12a) of the water injection hole (12) through the adapter (19).