Waterproof testing device for concrete pavement
By designing a concrete pavement waterproofing testing device, a rapid and convenient waterproofing performance test of concrete pavement was achieved using a hydraulic cylinder and a water pump system. This solves the problem of requiring sampling tests in existing technologies and improves the convenience of testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-20
AI Technical Summary
Existing concrete permeability testing devices require sampling concrete pavement for testing, making it difficult to conduct quick on-site testing of concrete pavement, resulting in poor testing convenience.
A concrete pavement waterproofing test device was designed. A hydraulic cylinder drives the test frame to move down, so that the rubber base pad fits tightly against the pavement. Water is injected into the test frame by a water pump, and the water level change is observed by a liquid level gauge. After standing, the remaining water level is measured. Multiple tests are conducted to obtain the seepage data of the entire pavement.
It enables rapid and convenient testing of the waterproof performance of concrete pavements, allowing for multiple tests to be conducted directly on the pavement to obtain water seepage data for the entire pavement and evaluate its waterproof performance.
Smart Images

Figure CN224019589U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of concrete pavement testing devices, specifically a concrete pavement waterproofing testing device. Background Technology
[0002] Concrete pavement refers to pavement with cement concrete slabs as the surface layer. Due to the influence of traffic vehicles and natural environmental factors, the pavement may deform and collapse, which seriously affects road traffic safety and driving comfort. Measuring concrete pavement can help detect pavement problems in a timely manner and address and maintain them, effectively extending the service life of the pavement.
[0003] For example, the announcement number CN119413690A (titled "A Test Device for the Permeability Performance of Permeable Concrete Pavement") includes: an upper sample fixing seat, which is located at the top of the sample; a lower sample fixing seat, which is located at the bottom of the sample and connected to the upper sample fixing seat by a screw; a closed cover, whose two ends are respectively tightly fitted to the upper and lower sample fixing seats and located on the outside of the sample; a water collection cover, which is located at the top center of the upper sample fixing seat, forming a cavity between the water collection cover and the top of the sample; a water storage pipe, which is located at the top center of the water collection cover and communicates with the cavity above the sample; a water supply pipe, which is located above the water storage pipe; and a fixed pipe, which is located at the bottom of the water supply pipe, with a sliding groove inside, and its outer wall center connected by a strip structure. The flow channel is connected to the water supply pipe; the movable pipe is located inside the chute; multiple connecting channels are provided and are arranged around the middle of the movable pipe, and the connecting channels are connected to the flow channel; multiple flow guide holes are provided and are located at the bottom of the inner wall of the movable pipe; the float is located inside the water storage pipe and is connected to the bottom of the movable pipe through a connecting rod; the flow meter is located above the water supply pipe and is connected to the water supply pipe through a telescopic pipe. By setting multiple sets of fixed seats and sample lower fixed seats, the performance of multiple samples can be measured simultaneously, thereby improving the testing efficiency; the setting of the closed cover can ensure that the water flows into the permeable concrete sample from the upper surface and out of the lower surface during the test to the greatest extent, and does not flow out from the side surface, thereby improving the accuracy of the test.
[0004] The aforementioned concrete permeability testing device requires sampling concrete pavement for testing, which makes it difficult to conduct quick on-site testing of concrete pavement, resulting in poor convenience of concrete pavement testing. Therefore, we provide a concrete pavement waterproofing testing device. Utility Model Content
[0005] The purpose of this invention is to provide a concrete pavement waterproofing testing device to solve the problem mentioned in the background art that existing concrete permeability testing devices require sampling concrete pavement for testing, which makes it impossible to conduct quick on-site testing of concrete pavement, resulting in poor convenience of concrete pavement testing.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a concrete pavement waterproofing test device, comprising a support platform, an integrally formed water storage tank at the upper end of the support platform, an integrally formed top cover plate at the top of the water storage tank, and a water inlet connected to the upper end of the top cover plate.
[0007] Also includes:
[0008] A water pump is located at the front end of the water storage tank, and a water spray pipe is provided at the outlet end of the water pump.
[0009] The test frame is positioned below the water spray pipe, and a liquid level gauge is integrally formed on the inner wall of the test frame.
[0010] A hydraulic cylinder is located on one side of the water pump, and a hanging link is provided at the top of the piston rod of the hydraulic cylinder. The two ends of the hanging link are welded to the piston rod of the hydraulic cylinder and the test frame, respectively.
[0011] Preferably, a lifting through hole is provided on one side of the water inlet, the lifting through hole and the top cover plate are integral structures, and a vertical connecting rod is movably connected inside the lifting through hole.
[0012] Preferably, the two ends of the vertical connecting rod are respectively integrally formed with a built-in float and a reference plate, which are located inside and outside the water storage tank, respectively.
[0013] Preferably, an end seat is provided at the rear end of the water storage tank, the end seat and the support platform are an integral structure, and a push-pull handle is integrally formed on the outer wall of the end seat.
[0014] Preferably, the bottom of the test frame is provided with a rubber pad, which is fixedly connected to the test frame by a nail-free adhesive.
[0015] Preferably, a guide pipe is provided at the water inlet of the water pump, and the water pump is connected to the interior of the water storage tank through the guide pipe.
[0016] Preferably, the bottom of the support platform is provided with four roller seats, which are movably connected to the support platform through a rotating shaft and bearings.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] This invention uses a hydraulic cylinder to lower a test frame, ensuring the rubber base fits tightly against the concrete pavement. A water pump then extracts water from a storage tank and injects it into the test frame via a spray pipe. The water level inside the frame is observed using a level gauge. After a period of settling, the remaining water level is measured to determine the permeability of the concrete pavement. Each test involves marking a section of the concrete pavement with the test frame, and multiple tests can be performed. The amount of water injected into the test frame remains constant each time. The combined test results provide data on the permeability of the entire concrete pavement. Higher permeability indicates poorer waterproofing performance, while lower permeability indicates better waterproofing. This invention achieves the goal of testing the waterproofing performance of concrete pavements, overcoming the limitations of existing concrete permeability testing devices that require sample preparation of the concrete pavement for testing, making on-site testing difficult and inconvenient. Attached Figure Description
[0019] Figure 1 This is a front view of the concrete pavement waterproofing testing device of this utility model.
[0020] Figure 2 This is a top view of the concrete pavement waterproofing testing device of this utility model.
[0021] Figure 3 This is a side view of the structure of the concrete pavement waterproofing testing device of this utility model;
[0022] Figure 4 This is a cross-sectional view of the internal structure of the concrete pavement waterproofing testing device of this utility model.
[0023] In the diagram: 1. Supporting platform; 2. Roller seat; 3. Water tank; 4. Top cover plate; 5. End seat; 6. Push-pull handle; 7. Reference plate; 8. Water inlet; 9. Test frame; 10. Rubber base pad; 11. Water spray pipe; 12. Water pump; 13. Guide pipe; 14. Hydraulic cylinder; 15. Hanging linkage; 16. Liquid level gauge; 17. Lifting perforation; 18. Built-in float; 19. Vertical linkage. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] Please see Figure 1-4An embodiment of this utility model is provided: a concrete pavement waterproofing test device, including a support platform 1, a water storage tank 3 integrally formed on the upper end of the support platform 1, a top cover plate 4 integrally formed on the top of the water storage tank 3, and a water injection port 8 connected to the upper end of the top cover plate 4.
[0026] Also includes:
[0027] A water pump 12 is installed at the front end of the water storage tank 3, and a water spray pipe 11 is installed at the water outlet end of the water pump 12.
[0028] The test frame 9 is located below the water spray pipe 11, and a liquid level gauge 16 is integrally formed on the inner wall of the test frame 9.
[0029] The hydraulic cylinder 14 is located on one side of the water pump 12, and a hanging link 15 is provided at the top of the piston rod of the hydraulic cylinder 14. The two ends of the hanging link 15 are welded to the piston rod of the hydraulic cylinder 14 and the test frame 9, respectively.
[0030] During use, the required water is injected into the water tank 3 through the water inlet 8. Then, the push-pull handle 6 is used to move the support platform 1 to the location of the concrete pavement. After that, the hydraulic cylinder 14 drives the test frame 9 to move down, so that the rubber base pad 10 fits tightly against the concrete pavement. Then, the water in the water tank 3 is pumped out by the water pump 12 and injected into the test frame 9 through the spray pipe 11. The water level inside the test frame 9 is then observed through the liquid level gauge 16. After standing for a period of time, the remaining water level is measured to test the water seepage of the concrete pavement. Each test is conducted by marking a section of the concrete pavement with the test frame 9. Multiple tests can be conducted, ensuring that the amount of water injected into the test frame 9 is constant each time. The combined test results are used to obtain the water seepage test data of the entire concrete pavement. The greater the water seepage, the worse the waterproof performance of the concrete pavement, and vice versa. This achieves the purpose of testing the waterproof performance of the concrete pavement. When the reference plate 7 falls to the lowest height, it means that the water in the water tank 3 is almost used up and needs to be replenished through the water inlet 8.
[0031] Please see Figure 4 A lifting through-hole 17 is provided on one side of the water inlet 8. The lifting through-hole 17 is an integral structure with the top cover plate 4. A vertical connecting rod 19 is movably installed inside the lifting through-hole 17. The lifting through-hole 17 on one side of the water inlet 8 facilitates the vertical lifting and lowering of the vertical connecting rod 19. Please refer to [link / reference]. Figure 4The vertical connecting rod 19 has an integrally formed built-in float 18 and a reference plate 7 at both ends. The built-in float 18 and the reference plate 7 are located inside and outside the water storage tank 3, respectively. The built-in float 18 and the reference plate 7 at both ends of the vertical connecting rod 19 function to sense the water level and determine the water level height. Please refer to [link / reference]. Figure 1 An end seat 5 is provided at the rear end of the water tank 3. The end seat 5 is an integral structure with the support platform 1. A push-pull handle 6 is integrally formed on the outer wall of the end seat 5. The end seat 5 at the rear end of the water tank 3 serves to support the push-pull handle 6 to facilitate the pushing of the support platform 1. Please refer to [link / reference]. Figure 1 The bottom of the test frame 9 is equipped with a rubber pad 10, which is fixedly connected to the test frame 9 with nail-free adhesive. The rubber pad 10 at the bottom of the test frame 9 enhances the adhesion between the test frame 9 and the concrete pavement. Please refer to [link / reference]. Figure 1 A guide pipe 13 is provided at the water inlet of the water pump 12. The water pump 12 is connected to the interior of the water storage tank 3 through the guide pipe 13. The guide pipe 13 at the water inlet of the water pump 12 facilitates the water pump 12 to pump water out of the water storage tank 3. Please refer to [link / reference]. Figure 1 The bottom of the support platform 1 is provided with four roller seats 2. The four roller seats 2 are movably connected to the support platform 1 through a rotating shaft and bearings. The four roller seats 2 at the bottom of the support platform 1 play the role of movably supporting the support platform 1.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A concrete pavement waterproofing test device, comprising a support platform (1), a water storage tank (3) integrally formed on the upper end of the support platform (1), a top cover plate (4) integrally formed on the top of the water storage tank (3), and a water inlet (8) connected to the upper end of the top cover plate (4). Its features are: Also includes: A water pump (12) is installed at the front end of the water storage tank (3), and a water spray pipe (11) is installed at the water outlet end of the water pump (12). The test frame (9) is located below the water spray pipe (11), and a liquid level gauge (16) is integrally formed on the inner wall of the test frame (9). A hydraulic cylinder (14) is located on one side of the water pump (12), and a hanging link (15) is provided at the top of the piston rod of the hydraulic cylinder (14). The two ends of the hanging link (15) are welded to the piston rod of the hydraulic cylinder (14) and the test frame (9) respectively.
2. The concrete pavement waterproofing testing device according to claim 1, characterized in that: A lifting through hole (17) is provided on one side of the water inlet (8). The lifting through hole (17) and the top cover plate (4) are an integral structure. A vertical connecting rod (19) is movably connected inside the lifting through hole (17).
3. The concrete pavement waterproofing testing device according to claim 2, characterized in that: The vertical connecting rod (19) has an integrally formed built-in float (18) and reference plate (7) at both ends, which are located inside and outside the water storage tank (3), respectively.
4. The concrete pavement waterproofing testing device according to claim 1, characterized in that: The water storage tank (3) is provided with an end seat (5) at the rear end. The end seat (5) and the support platform (1) are an integral structure. A push-pull handle (6) is integrally formed on the outer wall of the end seat (5).
5. The concrete pavement waterproofing testing device according to claim 1, characterized in that: The bottom of the test frame (9) is provided with a rubber pad (10), which is fixedly connected to the test frame (9) by a nail-free adhesive.
6. The concrete pavement waterproofing testing device according to claim 1, characterized in that: The water pump (12) is provided with a guide pipe (13) at the water inlet end, and the water pump (12) is connected to the interior of the water storage tank (3) through the guide pipe (13).
7. The concrete pavement waterproofing testing device according to claim 1, characterized in that: The bottom of the support platform (1) is provided with four roller seats (2), which are movably connected to the support platform (1) through a rotating shaft and bearings.
Citation Information
Patent Citations
Permeability testing device for pervious concrete pavement
CN119413690A