Concrete crack self-healing performance water seepage rate detection device

Abstract

The utility model relates to a detection device, in particular to a concrete crack self-healing performance water seepage rate detection device which comprises a measuring cylinder, a sealing cover and a booster pump, a rubber sealing layer is arranged on the measuring cylinder, and the rubber sealing layer is connected with a concrete test block with a crack through a fixing assembly; the measuring cylinder is provided with a first water inlet, the booster pump is provided with a second water outlet, and the first water inlet is communicated with the second water outlet through a water inlet pipe. The fixing assembly comprises a control handle, a fixing rod and a clamping jaw. The fixing rod is arranged above the rubber sealing layer through the rotating piece, and the control handle is inserted into the upper end of the fixing rod; one end of the clamping jaw is connected with the fixed rod, and the other end abuts against the bottom of the concrete test block with the crack. A spiral hole is formed in one end of the clamping jaw, and an internal thread is arranged in the spiral hole; the fixing rod is provided with an external thread, and the clamping jaw is in threaded connection with the fixing rod; limiting strips are arranged at the bottoms of the clamping jaws, and fillets are chamfered at the ends of the fiber rods. Repairing materials with high cost performance can be selected according to different environmental pressures.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to a device for detecting the water seepage rate of self-healing performance of concrete cracks. Background Art

[0002] In concrete structural engineering, the formation of cracks is a common disease. Especially in complex service environments, cracks may lead to problems such as water intrusion and steel corrosion, seriously affecting the durability and safety of the structure. Therefore, the anti-seepage performance after crack repair has become a key indicator for evaluating the repair effect. Existing repair methods include traditional chemical grouting, surface coating repair, and self-healing repair materials developed in recent years. Self-healing materials can form a new sealing layer at the crack through their own reaction or chemical reaction after contact with water, thereby restoring the anti-seepage performance of concrete. This type of material is particularly suitable for automatically repairing small cracks in complex environments.

[0003] However, existing technologies mostly focus on surface repair effects or structural strength testing after crack repair, lack precise testing methods for anti-seepage performance, and cannot fully reflect the performance of repair materials under actual working conditions. Especially for self-healing materials, their long-term anti-seepage performance is difficult to scientifically evaluate through conventional testing methods.

[0004] To address this issue, a specialized device is urgently needed that can effectively test the impermeability of cracks after repair by simulating water seepage conditions. By accurately measuring the permeability of the repaired area and scientifically evaluating the actual performance of the repair material, we can optimize material selection and repair processes, ensure effective repairs, and enhance the durability and service life of the structure. Utility Model Content

[0005] The utility model aims to provide a device for detecting the water seepage rate of the self-healing performance of concrete cracks, which solves the problem of being unable to select suitable repair materials.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is:

[0007] A device for detecting the water seepage rate of the self-healing performance of concrete cracks comprises a measuring cylinder, a sealing cover and a booster pump. The measuring cylinder is provided with a rubber sealing layer, which is connected to a cracked concrete test block via a fixing assembly. The measuring cylinder is provided with a first water inlet, and the booster pump is provided with a second water outlet. The first water inlet is connected to the second water outlet via a water inlet pipe.

[0008] Furthermore, the fixing assembly includes a control handle, a fixing rod and a clamping claw; the fixing rod is arranged above the rubber sealing layer through a rotating member, and the control handle is inserted into the upper end of the fixing rod; one end of the clamping claw is connected to the fixing rod, and the other end abuts against the bottom of the cracked concrete specimen.

[0009] Further, one end of the clamping jaw is provided with a spiral hole, and an inner thread is arranged in the spiral hole; an outer thread is arranged on the fixing rod, and the clamping jaw is in threaded connection with the fixing rod; a limiting strip is arranged at the bottom of the clamping jaw, and a rounded corner is arranged at the end of the fiber strip.

[0010] Further, a water collecting tank is further included, a first water outlet is arranged on the water collecting tank, a second water inlet is arranged on the booster pump, and the first water outlet is in communication with the second water inlet through a water outlet pipe.

[0011] Further, the water collecting tank has a cavity, and a water inlet plate is arranged on the upper end of the water collecting tank; a plurality of water permeation holes are arranged on the water inlet plate.

[0012] Further, an electronic display screen and a water pressure adjusting knob are arranged on the booster pump, the electronic display screen is used for displaying water pressure data in real time, and the water pressure adjusting knob is used for adjusting water pressure entering the measuring cylinder.

[0013] Further, an inner thread is arranged on the sealing cover, an outer thread is arranged on the top of the measuring cylinder, and the sealing cover is in threaded connection with the measuring cylinder.

[0014] Further, the measuring cylinder is made of acrylic.

[0015] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0016] The utility model uses the booster pump to make water pass through the measuring cylinder and the concrete test block with cracks to which the repairing material is attached, the measuring cylinder is made of acrylic, and the water flow process in the measuring cylinder can be observed in detail. Different repairing materials are attached to the concrete test block with cracks, and the booster pump is used for controlling different water pressures, and the repairing performance of the repairing material under different water pressures is observed.

[0017] The utility model can select the repairing material with high cost performance according to the difference of environmental pressure. DRAWINGS

[0018] Figure 1 It is a kind of concrete crack self-healing performance water permeation rate detection device schematic view.

[0019] Figure 2 It is fixed assembly schematic view.

[0020] Figure 3 It is booster pump schematic view.

[0021] Figure 4 It is concrete test block with crack schematic view. CONCRETE EMBODIMENT

[0022] As Figures 1 to 4As shown, a device for testing the water seepage rate of the self-healing performance of concrete cracks includes a measuring cylinder 1, a sealing cap 2, a booster pump 3, and a water collection tank 4. The measuring cylinder 1 is provided with a rubber sealing layer 6, which is connected to a cracked concrete test block 7 via a fixing assembly. The measuring cylinder 1 is provided with a first water inlet 8, and the booster pump 3 is provided with a second water outlet 9. The first water inlet 8 is connected to the second water outlet 9 via an inlet pipe 5. First, the repair material to be tested is applied to the cracked concrete test block 7, and the cracked concrete test block 7 is fixed below the measuring cylinder 1 using a fixing assembly, with the crack located directly below the measuring cylinder 1. The booster pump 3 delivers water to the measuring cylinder 1 through the inlet pipe 5. The measuring cylinder 1 is made of acrylic, and the height of the water level in the measuring cylinder 1 can be directly observed. The initial water level in the measuring cylinder 1 is recorded, and the water level is re-recorded after a period of time to determine the repair performance of the repair material. The water collection tank 4 has a cavity and is covered with a water inlet plate at its upper end. This inlet plate is provided with multiple seepage holes. If the repair material's repair performance is poor, water can enter the water collection tank 4 through the seepage holes. The water collection tank 4 is provided with a first water outlet 10, and the booster pump 3 is provided with a second water inlet 11. The first water outlet 10 is connected to the second water inlet 11 via an outlet pipe 25. The water then returns to the booster pump 3 through the outlet pipe 25.

[0023] The booster pump 3 is provided with an electronic display 12 and a water pressure adjustment knob 13. The electronic display 12 is used to display the water pressure in real time, and the water pressure adjustment knob 13 is used to adjust the water pressure entering the graduated cylinder 1. The water pressure adjustment knob 13 can be used to adjust the water pressure reaching the crack, thereby testing the repair performance of the repair material under different water pressures. In this way, the appropriate repair material can be selected under different environmental pressures, reducing repair costs and improving repair results.

[0024] The fixing assembly includes a control handle 21, a fixing rod 22 and a clamping jaw 23; the fixing rod 22 is arranged above the rubber sealing layer 6 through a rotating member, and the control handle 21 is inserted into the upper end of the fixing rod 22; one end of the clamping jaw 23 is connected to the fixing rod 22, and the other end abuts against the bottom of the cracked concrete test block 7. One end of the clamping jaw 23 is provided with a spiral hole, and the spiral hole is provided with an internal thread; the fixing rod 22 is provided with an external thread, and the clamping jaw 23 is threadedly connected to the fixing rod 22; a limiting strip is provided at the bottom of the clamping jaw 23, and the end of the fiber strip has a rounded corner. The cracked concrete test block 7 is placed on the clamping jaw 23, and then the cracked concrete test block 7 is fixed to the rubber sealing layer 6 by rotating the control handle 21, and the crack is aligned with the measuring cylinder 1 to prevent affecting the reliability and authenticity of the test results.

[0025] The sealing cap 2 is provided with an internal thread, and the top of the measuring cylinder 1 is provided with an external thread. The sealing cap 2 is threadedly connected to the measuring cylinder 1. The sealing cap 2 is provided with a sealing ring to prevent the pressure provided by the booster pump 3 from being affected. After testing the repair performance of the repair material, the sealing cap 2 is removed from the measuring cylinder 1, the water is poured out, and the measuring cylinder 1 is cleaned for the next use.

[0026] Specific test steps:

[0027] Step 1: Prepare the concrete test block

[0028] Clean the concrete test block to be tested and ensure that there are no impurities, dust or other contaminants in the cracks. Select a suitable repair material (such as epoxy resin, polyurethane, etc.), fill it into the crack according to the material instructions, and ensure that the repair material is completely cured.

[0029] Step 2: Install the concrete test block

[0030] Remove the sealing cap from the graduated cylinder and place the repaired concrete block in the device's grips. Adjust the control handle to ensure the crack in the concrete block is aligned directly below the graduated cylinder. Ensure the block is securely attached to the rubber seal through the mounting assembly to prevent leakage or displacement during the experiment.

[0031] Step 3: Sealing the Unit

[0032] After securing the concrete test block, reinstall the sealing cap onto the graduated cylinder and tighten the internal threads to ensure the entire system is sealed properly to prevent water and pressure leaks. Check all connections to ensure they are installed correctly.

[0033] Step 4: Connect the Booster Pump and Water Collection System

[0034] Use the water inlet pipe to connect the second water outlet of the booster pump to the first water inlet of the measuring cylinder. At the same time, ensure that the water collection tank is connected to the second water inlet of the booster pump through the water outlet pipe to form a water circulation loop.

[0035] Step 5: Setting the Water Pressure

[0036] Start the booster pump and set the desired initial water pressure using the water pressure adjustment knob. Use the electronic display to monitor the water pressure in the system in real time. Adjust the water pressure according to the experimental requirements to simulate the actual anti-seepage performance of the crack under different water pressure conditions.

[0037] Step 6: Start experimenting

[0038] A booster pump injects water into a graduated cylinder through an inlet pipe. Water is gradually applied to the surface of the repaired concrete specimen. The initial water level in the graduated cylinder at the start of the test is recorded to ensure consistent starting conditions.

[0039] Step 7: Water seepage monitoring

[0040] As water pressure is applied, the water level in the graduated cylinder is regularly recorded. By observing the rate at which the water level in the graduated cylinder drops, it is possible to monitor whether water is leaking through the cracks into the water collection tank. If leakage occurs, water will enter the water collection tank through the cracks. The amount of water seeping through and the duration of the seepage are recorded.

[0041] Step 8: End the experiment

[0042] When the predetermined test time or water pressure condition is reached, turn off the booster pump, remove the sealing cover, drain the water in the measuring cylinder, and clean all device components, especially the contact surface between the measuring cylinder and the test block, in preparation for the next test.

[0043] Step 9: Data Recording and Analysis

[0044] Record the water level drop, water seepage volume, and seepage time during each test. Compare this data with the performance of different repair materials to evaluate their effectiveness at resisting seepage under varying pressures. By comparing permeability and seepage time, determine the optimal repair material and process.

[0045] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A device for detecting the water seepage rate of concrete crack self-healing performance, characterized in that: The device comprises a measuring cylinder, a sealing cover and a booster pump. The measuring cylinder is provided with a rubber sealing layer, which is connected to a cracked concrete test block through a fixing assembly. The measuring cylinder is provided with a first water inlet, and the booster pump is provided with a second water outlet. The first water inlet is connected to the second water outlet through a water inlet pipe.

2. A concrete crack self-healing performance water seepage rate detection device according to claim 1, characterized in that: The fixing assembly includes a control handle, a fixing rod and a clamping claw; the fixing rod is arranged above the rubber sealing layer through a rotating member, and the control handle is inserted into the upper end of the fixing rod; one end of the clamping claw is connected to the fixing rod, and the other end abuts against the bottom of the concrete test block with a crack.

3. A concrete crack self-healing performance water seepage rate detection device according to claim 2, characterized in that: One end of the clamp is provided with a spiral hole, and an internal thread is provided in the spiral hole; the fixing rod is provided with an external thread, and the clamp is threadedly connected to the fixing rod; a limiting strip is provided at the bottom of the clamp, and the end of the fiber strip has a rounded corner.

4. A device for detecting water seepage rate of concrete crack self-healing performance according to claim 1, characterized in that: It also includes a water collecting tank, which is provided with a first water outlet, and the booster pump is provided with a second water inlet, and the first water outlet is connected to the second water inlet through a water outlet pipe.

5. A device for detecting water seepage rate of concrete crack self-healing performance according to claim 4, characterized in that: The water collecting box has a cavity, and the upper end of the water collecting box is covered with a water inlet plate; the water inlet plate is provided with a plurality of water seepage holes.

6. A device for detecting water seepage rate of concrete crack self-healing performance according to claim 1, characterized in that: The booster pump is provided with an electronic display screen and a water pressure regulating knob. The electronic display screen is used to display the water pressure indication in real time, and the water pressure regulating knob is used to regulate the water pressure entering the graduated cylinder.

7. The device for detecting water seepage rate of concrete crack self-healing performance according to claim 1, characterized in that: The sealing cover is provided with an internal thread, the top of the measuring cylinder is provided with an external thread, and the sealing cover is threadedly connected to the measuring cylinder.

8. The device for detecting water seepage rate of concrete crack self-healing performance according to claim 1, characterized in that: The measuring cylinder is made of acrylic.

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