Grooving and grouting integrated repairing method for concrete water seepage cracks

Abstract

The invention provides a concrete water seepage crack grooving and grouting integrated repairing method, which comprises an electric saw type device, the electric saw type device is composed of a magnetic sheet, a saw chain and a motor, the electric saw type device can drive a saw blade to rotate after being electrified, so that the saw blade enters a wall crack, and the magnetic sheet embedded in the saw blade is left in a wall. The grouting pipes are arranged in the magnetic sheets, a grouting machine can conduct grouting into the wall through the grouting pipes, the magnetic sheets at equal intervals can attract the magnetic convergence water absorption expansion materials, and therefore the wall is filled with grout. The magnetic sheets have different specifications and are self-made according to wall body gaps with different sizes, a plurality of channels are formed in the magnetic sheets, slurry can be diffused around the magnetic sheets, materials can rapidly expand after meeting water, and therefore the effect of leaking stoppage of water seepage cracks is achieved, and water leakage accidents of underground engineering are avoided. The wall crack repairing device is simple and convenient to operate, rapid in repairing, small in damage to the wall, capable of effectively solving the problem of wall crack water seepage, low in use cost and capable of being recycled and reused.

Description

Technical Field

[0001] This invention belongs to the field of concrete construction, specifically relating to an integrated method for repairing concrete seepage cracks by grooving and injection. Background Technology

[0002] Due to temperature and humidity fluctuations, many concrete slabs develop cracks. Traditional grouting methods rely on the presence of seepage of slurry at the surface to determine sealing completion. However, the flow direction of the slurry within the cracks is unpredictable; seepage may indicate incomplete sealing, resulting in ineffective sealing. Furthermore, traditional slurry grouting requires drilling holes in the existing cracks and injecting slurry using a syringe, a complex process that carries the risk of creating new cracks. When cracks appear in concrete walls during later use, the soil within the concrete strata contains abundant groundwater, which can seep into underground structures, causing leaks. Therefore, repairing water-seeping cracks in concrete walls without compromising the overall structure is a challenging task, requiring complex and often ineffective methods. Thus, using magnetically focused, water-absorbing, and expanding materials to repair water-seeping cracks in concrete walls is of significant importance. This invention provides a feasible method for sealing water-seeping cracks in concrete. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated repair device and method for concrete seepage cracks by grooving. This method is mainly aimed at solving the problem of water seepage in wall cracks. The device used in this method is easy to operate, repairs quickly, effectively solves the problem of water seepage in wall cracks, and has low operating costs. The device can be recycled and reused.

[0004] To achieve the above-mentioned technical features, the objective of this invention is as follows: A method for integrated grooving and grouting repair of concrete seepage cracks, comprising the following steps: Step 1: Use an ultrasonic detector to conduct non-destructive testing on the target concrete wall, accurately identify and locate the water seepage cracks that need to be repaired, and record the key parameters of the cracks in detail. Step 2 involves mixing epoxy resin carrier liquid with neodymium iron boron magnetic powder, molding, curing, demolding, and magnetizing to produce a magnetic sheet with a certain magnetic field strength. Step 3: Embed the prepared magnetic sheet into the central cavity of the hollow saw blade of the electric saw-type device, and ensure that the magnetic sheet is firmly fixed. Step 4: Based on the determined key parameters of the crack, select a hollow saw blade of the appropriate size, start the electric saw device, and precisely cut out a receiving groove on the wall along the preset path of the crack. Step 5: After the grooving is completed, remove the electric saw-type device from the wall. During the removal process, the magnetic piece embedded in the hollow saw blade will remain in the groove, achieving equidistant embedded positioning of the magnetic piece inside the crack. Securely connect the outlet end of the grouting pipe to the grouting port on the left magnetic piece. Step 6: Prepare the magnetic convergence water-absorbing and expanding material according to the formula. Use a two-liquid grouting system and an electric powder sprayer to mix the materials instantly before injecting them into the crack through a three-way pipe. Start the equipment, and inject the grout into the crack through the grouting pipe and grouting port. The magnetic field generated by the equidistant magnetic sheets in the crack attracts the grout to spread and fill evenly until the grout overflows. Immediately stop the equipment and thoroughly clean the pipeline to prevent blockage. Under the action of the magnetic field, the grout quickly absorbs water, expands and solidifies to form a high-strength impermeable filler to complete the repair.

[0005] Preferably, the key parameters of the crack in step 1 include the crack location, orientation, depth, and width. The specific manufacturing process of the magnetic sheet in step 2 is as follows: the epoxy resin carrier liquid and neodymium iron boron magnetic powder are thoroughly and evenly mixed in a certain ratio; the evenly mixed carrier liquid is poured into an elliptical silicone mold; after it has cured and formed, it is demolded, and then the demolded magnet is magnetized using a magnetizing machine; In step 4, the sawing depth is controlled during the sawing process so that the end of the hollow saw blade is flush with the wall surface; and equidistant sawing grooves are made along the direction of the crack. Preferably, by adjusting the mass ratio of neodymium iron boron magnetic powder in epoxy resin and the geometric dimensions of the magnet, magnetic sheets with different magnetic field strengths are generated; combined with the crack inclination angle and depth parameters, differentiated magnetic sheets are implanted along the crack direction to establish a three-dimensional magnetic field network in the crack, and the grout is guided by magnetic force to achieve three-dimensional uniform filling, adapting to any crack shape.

[0006] Preferably, the hollow saw blade is equipped with an elastic buckle to lock the magnetic sheet. The open and closed locking state and the retracted release state of the elastic buckle are controlled by the axial movement of the magnetic sheet protective sleeve. When the saw blade is withdrawn, the protective sleeve touches the bottom of the groove to generate a reverse thrust. The magnetic sheet is released and left in the groove, exposing the grouting port, thus realizing a single-step process of grooving and magnetic sheet implantation.

[0007] Preferably, the magnetic sheet is coated with alumina by plasma spraying to block the penetration of alkaline media inside the concrete. At the same time, the difference in the thermal expansion coefficients between the magnetic sheet and the concrete is designed so that the temperature change generates radial pressure to strengthen the interface, ensuring the long-term service of the magnetic sheet and the magnetic control function throughout the entire life cycle of the repair system.

[0008] Preferably, a three-way pipe is used to achieve transient mixing and injection of magnetically converging grout and water-swellable material, and the components are prevented from reacting prematurely through dual-liquid storage; the electric powder sprayer precisely controls the amount of expanding agent to ensure the fluidity of the grout; the three-way pipe generates high-speed turbulent mixing at the front end of the grouting port, and the magnetic field is used to directionally adsorb the grout to fill along the magnetic lines of force. The instantaneous mixing triggers the synergistic effect of water absorption expansion and magnetic guidance. After the grout diffuses evenly in the crack, it expands rapidly to form a highly impermeable sealing plug.

[0009] Preferably, the electric saw device consists of a saw blade, a saw chain, magnetic plates, and a motor. After being powered on, the electric saw device saws into the wall and leaves the magnetic plates inside the wall. The magnetic plates contain grouting pipes, and the grouting machine injects grout into the wall through the grouting pipes. The equidistant magnetic plates attract and absorb water to expand the grout, thereby filling the wall with grout. The motor is used to generate driving torque to rotate the saw chain and provide power for the entire device.

[0010] Preferably, the magnetically aggregated water-absorbing and expanding material is formulated from the following components in weight percentage: acrylate group A 10.0% ~ 18.0%; acrylate group B 1.5% ~ 4.5%; water-absorbing and expanding resin 0.4% ~ 1.5%; magnetic powder 15.0% ~ 25.0%; water balance, and the sum of the percentages of each component is 100%.

[0011] Preferably, the grouting uses a dual-liquid grouting system in conjunction with an electric powder sprayer. The two suction pipes of the grouting machine are respectively placed into the acrylate A and B component material tanks, while the water-absorbing resin is loaded into the powder sprayer. The grouting gun head and the powder sprayer are connected through a three-way pipe so that the acrylate and water-absorbing resin are mixed before being injected into the crack. After the grouting is completed, the two suction ports of the grouting pump must be removed from the material tanks immediately, and the residual grout in the pipeline must be drained to prevent the grout from solidifying and clogging the pipeline.

[0012] Preferably, the saw blade is a detachable device that can be separated from the magnetic plate after sawing into the wall, so that the saw blade can be recycled for reuse.

[0013] The present invention has the following beneficial effects: 1. This invention precisely controls the magnetic field strength by adjusting the magnetic powder ratio and magnetic sheet size, and differentially implants magnetic sheets based on crack inclination angle and depth parameters to construct a three-dimensional magnetic field network inside the crack. This overcomes the limitations of traditional grouting methods, which suffer from uneven filling and left voids due to complex crack morphologies. It achieves magnetically guided grout to uniformly diffuse and fill the crack in three dimensions, significantly improving density, preventing leakage and recurrence, and adapting to any crack morphology.

[0014] 2. This invention features an innovative design of a linkage mechanism between an elastic buckle and a protective sleeve. When the saw is withdrawn, pressing against the bottom of the groove automatically triggers the magnetic sheet to disengage and remain in place. This overcomes the problems of low efficiency and poor positioning accuracy caused by the traditional process of step-by-step grooving and manual implantation of the magnetic sheet. It achieves a single-step synchronous completion of grooving and precise magnetic sheet implantation, significantly shortening the construction period and ensuring implantation positioning accuracy, while avoiding secondary operations that could cause cracks.

[0015] 3. This invention employs a plasma-sprayed alumina layer to block alkaline media corrosion and precisely designs the difference in thermal expansion coefficients between the magnetic sheet and concrete. This effectively solves the problems of concrete environment corrosion of the magnetic sheet and interface delamination failure caused by temperature changes, significantly extending the service life of the magnetic sheet, improving interface bonding strength, and ensuring stable and reliable magnetic control function throughout the entire lifespan of the repair system.

[0016] 4. This invention utilizes a three-way pipe to achieve transient turbulent mixing and injection of magnetically converged slurry and water-swellable material, with dual-liquid storage to isolate the pre-reaction process. It overcomes the limitations of traditional premixed slurry, such as early coagulation and pipe blockage, and shrinkage due to water loss in dry environments, ensuring high fluidity of the slurry before injection. The synergistic effect of magnetic field-directed adsorption and instantaneous mixing triggering water absorption and expansion allows the slurry to rapidly expand and solidify after uniform diffusion, significantly improving impermeability and greatly shortening curing time, forming a highly sealed plug.

[0017] 5. This invention employs an integrated electric saw-type device that combines grooving, magnetic plate implantation / positioning, and grouting pipe functions. The saw blade is detachable and recyclable. This solves the pain points of cumbersome operation and high repair costs associated with switching between multiple devices, allowing a single machine to efficiently complete the core repair process. The reusable saw blade significantly reduces consumable costs, and the combination of magnetic field guidance enables high-precision grout filling.

[0018] 6. This invention optimizes the compounding of acrylate and water-absorbing and swelling resin, leveraging the complementary and synergistic effects of the materials. It overcomes the defects of low strength or cracking of restorations caused by water loss and shrinkage of single materials. The acrylate compensates for the insufficient strength and adhesion of the water-absorbing resin, while the water-absorbing resin solves the problem of acrylate drying and shrinkage failure. Ultimately, it forms a high-strength impermeable body with high bonding strength and stable expansion rate, significantly improving the long-term durability of the restoration in dry and wet environments. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of a magnetically implanted electric saw device.

[0021] Figure 2 A schematic diagram showing the details of the anti-corrosion grouting process for the integrated magnetic sheet structure.

[0022] Figure 3 This is a schematic diagram of the instantaneous mixing and magnetic sheet linkage grouting repair of the three-way pipe.

[0023] In the diagram: 1. Wall; 2. Crack; 3. Magnetic sheet; 4. Hollow saw blade; 5. Saw chain; 6. Motor; 7. Electric saw-type device; 8. Grouting pipe; 9. Grouting port; 10. T-pipe; 11. Elastic buckle; 12. Protective sleeve; 13. Alumina film. Detailed Implementation

[0024] The present invention will be further described in detail below through specific embodiments. These embodiments are intended to enable those skilled in the art to gain a more comprehensive understanding of the present invention, but do not limit the invention in any way.

[0025] Example 1: See Figure 1-3 A method for integrated grooving and grouting repair of concrete seepage cracks includes the following steps: Step 1: Use an ultrasonic detector to conduct non-destructive testing on the target concrete wall 1, accurately identify and locate the water seepage crack 2 that needs to be repaired, and record in detail its direction, width, length and depth and other key parameters. Step 2: Thoroughly and uniformly mix the epoxy resin carrier liquid and neodymium iron boron magnetic powder according to the optimal mass ratio. Pour the uniformly mixed carrier liquid into an elliptical silicone mold of a specific size. After it has cured and solidified, demold it, and then use a magnetizer to magnetize the demolded magnet to produce a magnetic sheet 3 with a specific magnetic field strength; Step 3: Embed the prepared magnetic sheet 3 into the central cavity of the specially designed hollow saw blade 4, ensuring that the magnetic sheet 3 is securely fixed. This hollow saw blade 4, together with the saw chain 5 and the drive motor 6, constitutes the electric saw-type device 7. The motor 6 provides power for the rotation of the saw chain 5, driving the entire device to cut the wall 1. Step 4: Based on the determined location, direction, depth, and width of the crack, select a hollow saw blade 4 of the appropriate size. Start the electric saw device and precisely cut a groove into the wall 1 along the preset path of the crack 2. Control the sawing depth so that the end of the saw blade 4 is flush with the wall surface. Operate the device to cut grooves at equal intervals along the direction of the crack 2; Step 5: After completing the grooving, remove the electric saw-type device 7 from the wall 1. During the removal process, the magnetic piece 3 embedded in the hollow saw blade will remain in the excavated groove due to its design structure, achieving equidistant embedded positioning of the magnetic piece 3 inside the crack. Subsequently, firmly connect the outlet end of the grouting pipe 8 to the grouting port 9 on the retained magnetic piece; Step 6: Prepare the magnetically convergent water-absorbing and expanding material according to the specified ratio. Using a two-liquid grouting system and an electric powder sprayer, mix the materials instantly before injecting them into crack 2 through a three-way pipe 10. Start the equipment, and inject the grout into the crack through the grouting pipe 8 and the magnetic grouting port 9. The magnetic field generated by the equidistant magnetic plates 3 within the crack attracts the grout to diffuse and fill evenly until the grout overflows. Immediately stop the equipment and thoroughly clean the pipeline to prevent blockage. Under the action of the magnetic field, the grout rapidly absorbs water, expands, and solidifies, forming a high-strength impermeable filler to complete the repair.

[0026] Furthermore, the mass ratio of the neodymium iron boron magnetic powder in the epoxy resin and the geometric dimensions of the magnet are used to generate magnetic sheets 3 with different magnetic field strengths. Combined with the inclination angle and depth parameters of the crack 2, the differentiated magnetic sheets 3 are implanted along the crack direction to establish a three-dimensional magnetic field network in the crack 2. The slurry is guided by magnetic force to achieve three-dimensional uniform filling, which can adapt to any crack shape.

[0027] Furthermore, the hollow saw blade 4 is provided with an elastic buckle 11 to lock the magnetic sheet 3. The open and closed locking state and the contracted release state of the elastic buckle 11 are controlled by the axial movement of the magnetic sheet protective sleeve 12. When the saw blade is withdrawn, the protective sleeve 12 touches the bottom of the groove to generate a reverse thrust, the magnetic sheet is released and left in the groove and the grouting port 9 is exposed, realizing the single-process grooving-magnetic sheet implantation.

[0028] Furthermore, the magnetic sheet 3 is blocked from the penetration of alkaline media inside the concrete by plasma spraying alumina 13. At the same time, the difference in thermal expansion coefficient between the magnetic sheet 3 and the concrete is designed so that the temperature change generates radial pressure to strengthen the interface, ensuring the long-term service of the magnetic sheet 3 and the magnetic control function throughout the entire life cycle of the repair system.

[0029] Furthermore, the three-way pipe 10 enables the transient mixing and injection of magnetically converged grout and water-swellable material, and the dual-liquid storage design avoids premature reaction of components. The electric powder injector precisely controls the dosage of the expanding agent to ensure the fluidity of the grout. The three-way pipe 10 generates high-speed turbulent mixing at the front end of the grouting port 9, and uses magnetic field to directionally adsorb and fill the grout along the magnetic lines of force. The instantaneous mixing triggers the synergistic effect of water absorption and expansion and magnetic guidance. After the grout diffuses uniformly in the crack 2, it expands rapidly to form a highly impermeable and sealed plug, overcoming the early setting limitation of traditional premixed grout.

[0030] Furthermore, the electric saw-type device 7 consists of a saw blade 4, a saw chain 5, magnetic plates 3, and a motor 6. When powered on, the electric saw-type device 7 can saw into the wall 1, leaving the magnetic plates 3 inside. The magnetic plates 3 contain grouting pipes, allowing a grouting machine to inject grout into the wall 1 through the grouting pipes 8. The equidistant magnetic plates 3 can attract and absorb water, expanding the grout, thus filling the wall 1. The motor 6's main function is to generate driving torque, causing the saw chain 5 to rotate and providing power to the entire device.

[0031] Furthermore, the magnetically convergent water-absorbing and expanding material is composed of 13.8% acrylate group A, 2.8% acrylate group B, 0.8% water-absorbing and expanding resin, 62.6% water, and 20% magnetic powder. The advantages of the cured product formed by the acrylate, such as high bonding strength and strong adhesion, compensate for the problems of low strength and poor bonding performance of the cured product of the water-absorbing resin. The advantages of the water-absorbing resin, such as strong water retention, resistance to water loss and shrinkage, and fast gelation speed, compensate for the problem that the acrylate material is prone to water loss and shrinkage in dry environments, which leads to the failure of the leak-sealing effect.

[0032] Furthermore, the dual-liquid grouting system, in conjunction with an electric powder sprayer, places the two suction pipes of the grouting machine into the acrylate A and B component tanks respectively, while the water-absorbing resin is loaded into the powder sprayer. A three-way pipe connects the grouting gun head to the powder sprayer, allowing the acrylate and water-absorbing resin to mix before being injected into the cracks. After grouting is completed, the two suction ports of the grouting pump must be immediately removed from the tanks, and any residual grout in pipe 8 must be drained to prevent the grout from solidifying and clogging the pipes.

[0033] Furthermore, the saw blade 4 is a detachable device that can be separated from the magnetic plate 3 after sawing into the wall 1. The saw blade 4 can be recycled and reused, thereby reducing costs.

[0034] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many specific modifications under the guidance of the present invention without departing from the spirit of the invention and the scope of protection of the claims, and these modifications all fall within the scope of protection of the present invention.

Claims

1. A method for integrated repair of concrete seepage cracks by grooving and injection, characterized in that, Includes the following steps: Step 1: Use an ultrasonic detector to conduct non-destructive testing on the target concrete wall (1), accurately identify and locate the water seepage cracks (2) that need to be repaired, and record the key parameters of the cracks in detail; Step 2: After mixing epoxy resin carrier liquid with neodymium iron boron magnetic powder, molding, curing, demolding, and magnetizing, a magnetic sheet with a certain magnetic field strength is made (3). Step 3: The prepared magnetic sheet (3) is embedded in the central cavity of the hollow saw blade (4) of the electric saw type device (7), and the magnetic sheet (3) is securely fixed. Step 4: Based on the determined key parameters of the crack, select a hollow saw blade (4) of the appropriate size, start the electric saw device, and precisely cut out a receiving groove on the wall (1) along the preset path of the crack (2); Step 5: After the grooving is completed, the electric saw device (7) is removed from the wall (1). During the removal process, the magnetic piece (3) embedded in the hollow saw blade will be left in the groove, so that the magnetic piece (3) is equidistantly embedded in the crack. The outlet end of the grouting pipe (8) is firmly connected to the grouting port (9) on the left magnetic piece. Step 6: Prepare magnetic convergence water-absorbing and expanding material according to the ratio. Use a two-liquid grouting system and an electric powder sprayer to mix the material instantly before injecting it into the crack (2) through a three-way pipe (10). Start the equipment and inject the grout into the crack through the grouting pipe (8) and grouting port (9). The magnetic field generated by the equidistant magnetic sheets (3) in the crack attracts the grout to spread evenly and fill until the grout overflows. Immediately stop the equipment and thoroughly clean the pipeline to prevent blockage. Under the action of the magnetic field, the grout quickly absorbs water, expands and solidifies to form a high-strength impermeable filler to complete the repair.

2. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that, The key parameters of the crack in step 1 include the crack location, orientation, depth, and width. In step 2, the specific manufacturing process of the magnetic sheet (3) is as follows: the epoxy resin carrier liquid and neodymium iron boron magnetic powder are thoroughly and evenly mixed in a certain ratio; the evenly mixed carrier liquid is poured into an elliptical silicone mold; after it is cured and formed, it is demolded, and then the magnetizer is used to magnetize the demolded magnet. In step 4, the sawing depth is controlled during the sawing process so that the end of the hollow saw blade (4) is flush with the wall surface; and equidistant sawing and grooving are carried out along the direction of the crack (2).

3. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that, By adjusting the mass ratio of neodymium iron boron magnetic powder in epoxy resin and the geometric dimensions of the magnet, magnetic sheets (3) with different magnetic field strengths are generated; combined with the inclination angle and depth parameters of the crack (2), the differentiated magnetic sheets (3) are implanted along the crack direction to establish a three-dimensional magnetic field network in the crack (2), and the grout is guided by magnetic force to achieve three-dimensional uniform filling, which can adapt to any crack shape.

4. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that: The hollow saw blade (4) has an elastic buckle (11) in its inner cavity to lock the magnetic piece (3). The open and locked state and the contracted and released state of the elastic buckle (11) are controlled by the axial movement of the magnetic piece protective sleeve (12). When the saw blade is withdrawn, the protective sleeve (12) touches the bottom of the groove to generate a reverse thrust. The magnetic piece (3) is released and left in the groove and the grouting port (9) is exposed, realizing the single-process grooving-magnetic piece implantation.

5. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that: The magnetic sheet (3) is blocked from the penetration of alkaline media inside the concrete by plasma spraying aluminum oxide (13). At the same time, the difference in thermal expansion coefficient between the magnetic sheet (3) and the concrete is designed so that the temperature change generates radial pressure to strengthen the interface, ensuring the long-term service of the magnetic sheet (3) and the magnetic control function throughout the entire life cycle of the repair system.

6. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that: The three-way pipe (10) is used to realize the instantaneous mixing and injection of magnetic convergence grout and water-swellable material. The components are prevented from reacting prematurely by the dual liquid storage. The electric powder sprayer accurately controls the amount of expansion agent to ensure the fluidity of the grout. The three-way pipe (10) generates high-speed turbulent mixing at the front end of the grouting port (9). The magnetic field is used to directionally adsorb the grout to fill along the magnetic lines of force. The instantaneous mixing triggers the synergistic effect of water absorption expansion and magnetic guidance. After the grout spreads evenly in the crack (2), it expands rapidly to form a highly impermeable sealing plug.

7. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that: The electric saw device (7) consists of a saw blade (4), a saw chain (5), a magnetic piece (3) and a motor (6). After the electric saw device (7) is powered on, it saws into the wall (1) and leaves the magnetic piece (3) inside the wall. There is a grouting pipe inside the magnetic piece (3). The grouting machine injects grout into the wall (1) through the grouting pipe (8). The equidistant magnetic pieces (3) attract the magnetic water-absorbing grout, thereby filling the wall (1) with grout. The motor (6) is used to generate driving torque to make the saw chain (5) rotate and provide power for the entire device.

8. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that: The magnetically convergent water-absorbing and expanding material is composed of the following components in weight percentage: acrylate group A 10.0% ~ 18.0%; acrylate group B 1.5% ~ 4.5%; water-absorbing and expanding resin 0.4% ~ 1.5%; magnetic powder 15.0% ~ 25.0%; water balance, and the sum of the percentages of each component is 100%.

9. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 8, characterized in that: The grouting uses a dual-liquid grouting system with an electric powder sprayer. The two suction pipes of the grouting machine are placed into the acrylate A and B component material buckets respectively, while the water-absorbing resin is loaded into the powder sprayer. The grouting gun head and the powder sprayer are connected through a three-way pipe so that the acrylate and water-absorbing resin are mixed before being injected into the crack. After the grouting is completed, the two suction ports of the grouting pump should be removed from the material buckets immediately, and the residual grout in the pipe (8) should be drained to avoid the grout solidifying and clogging the pipe.

10. The method for integrated grooving and grouting repair of concrete seepage cracks according to claim 1, characterized in that: The saw blade (4) is a detachable device that can be separated from the magnetic plate (3) after sawing into the wall (1). The saw blade (4) can be recycled for reuse.

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