Rapid evaluation device and method for hidden disease minimally invasive grouting repair effect
By setting up a small road simulation device and ion selective sensor in the transparent test chamber to monitor the ion concentration in the grouting slurry, the problem that existing grouting effect evaluation technology may cause damage to the original road and is difficult to accurately evaluate is solved, and the rapid and accurate evaluation of grouting repair effect is achieved.
Patent Information
- Application Number
- CN202510336698.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-06-24
AI Technical Summary
Existing grouting effect evaluation techniques may damage the original road and it is difficult to accurately evaluate the grouting effect.
By setting up a small road simulation device and an ion selective sensor in the transparent test chamber, the grouting repair process is simulated, and the grouting effect is judged by monitoring the ion concentration in the grouting slurry.
The rapid and accurate evaluation of the grouting and repair effect is achieved, which avoids damage to the original road and improves the reliability of the evaluation.
Smart Images
Figure CN120195246A_ABST
Abstract
Description
Technical Field
[0001] This patent is a rapid evaluation device and method for the repair effect of minimally invasive grouting for hidden diseases, belonging to the fields of road engineering and material testing. Background Art
[0002] As a common infrastructure repair method, the grouting repair technology is widely used in civil engineering, bridges, tunnels, and the treatment of geological disasters, especially suitable for dealing with geological inhomogeneity, crack propagation, and structural diseases. The minimally invasive grouting repair technology, as an innovative branch in this field, has high precision and low interference. The minimally invasive grouting repair method reduces the impact of traditional grouting methods on the surrounding environment and structure by precisely controlling the grouting pressure and flow rate, while improving the repair efficiency and durability. In recent years, the research on grouting materials has also been continuously deepened. Especially the emergence of high-performance cement-based materials and functional composite materials has greatly expanded the scope of application and effect of grouting repair.
[0003] In terms of diagnostic technology, the minimally invasive grouting repair technology also benefits from the development of modern sensing technology. Non-destructive testing methods such as ground-penetrating radar and acoustic wave monitoring provide important support for the evaluation and diagnosis of the repair effect. The low interference of such methods minimizes the impact on the existing structure or the surrounding environment during the repair, especially suitable for densely populated areas or projects with high appearance requirements. Secondly, high-precision grouting can effectively control the distribution and penetration depth of the injected material, thereby achieving a more accurate repair effect, which is particularly important for dealing with complex diseases. The process of minimally invasive grouting is relatively simple, does not require large-scale excavation or demolition work, has a short construction period, and can significantly reduce the total cost of the project. The repair materials used are usually composite materials with high strength and high durability, which enables the structure after minimally invasive grouting repair to maintain good performance for a long time and reduces the need for later maintenance. Summary of the Invention
[0004] Aiming at the deficiencies of the existing technology, the purpose of this patent is to provide a rapid evaluation device and method for the repair effect of minimally invasive grouting for hidden diseases. By setting up a road simulation device in a transparent test box, setting up corresponding diseases in the road simulation device, using a grouting device to simulate the grouting repair of road diseases in engineering, monitoring the ion concentration of the grouting slurry through the established ion-selective sensor, and judging the quality of the grouting effect through the change of the ion concentration, it solves the deficiencies that the existing grouting effect evaluation technology may damage the original road and it is difficult to accurately evaluate the grouting effect.
[0005] To achieve the above object, this patent is realized through the following technical solutions: A rapid evaluation device and method for the repair effect of concealed diseases by minimally invasive grouting, the structure of which includes a transparent test box, a grouting device, a small-scale road simulation device, an ion-selective sensor, a temperature and humidity measuring instrument, and a liquid crystal display device.
[0006] Furthermore, the entire device is entirely set in the transparent test box. The outer shell of the test box is made of high-strength transparent materials such as plexiglass (PMMA) or polycarbonate (PC). The box body is designed with a double-layer structure, and heat-insulating materials (such as polyurethane foam or air layer) are filled between the two layers, which can effectively reduce temperature fluctuations and maintain the stability of the experimental environment. The size range of the length, width, and height of the box body is (80±10)×(60±10)×(60±10) cm. The top of the box body is open and provided with a ventilation device, and the bottom is provided with a drainage device, and the other four sides are all closed.
[0007] Furthermore, there are LED lights on the top of the box body, and the brightness of the lighting can be adjusted. The lighting system has the function of anti-ultraviolet rays to avoid the harmful light effects generated during long-term use.
[0008] Furthermore, there is a grouting device on the top of the transparent test box. An electric pump or air pressure pump is set in the grouting device to provide external pressure to simulate the actual high-pressure grouting process. The pressure range of pressure grouting is 1 to 3 MPa, and the flow rate of the grout can be controlled by adjusting the flow valve. The flow control range is 10 to 300 mL / min.
[0009] Furthermore, a small-scale road simulation device is set inside the box body. The small-scale road model should have a certain structural complexity and physical characteristics similar to those of actual roads. The base should be made of cement-based materials or light soil. The size range of the length, width, and height of the road model is (40±10)×(15±10)×(40±10) cm.
[0010] Furthermore, a small-scale road simulation device is set inside the box body. Cracks in the simulated road model can be engraved inside the model using a micro blade or laser scribing.
[0011] Furthermore, ion-selective sensors are set in the road model. The sensors are divided into calcium ion sensors (Ca 2+ ) and chloride ion sensors (Cl - ). The sensors should be installed in the crack area in contact with the road model in the test box. The sensors should cover the ion concentration range that may occur during the grouting process, set between 0.01 mM and 100 mM, and the accuracy of the sensors is controlled between 1 and 5%. Sensors that support a wide pH range (3 to 11) are selected.
[0012] Furthermore, a drainage system is provided at the bottom of the transparent test chamber to prevent the accumulation of excess liquid during the grouting process. By setting up a drain outlet and a liquid collection system, it ensures that the seeping grouting liquid can flow out smoothly, and prevents the contamination of the chamber by liquid leakage and the impact on the experimental results.
[0013] Furthermore, a liquid crystal display device is provided on the front of the chamber, which can display various parameters of the test chamber in real time, such as temperature and humidity, grouting process, real-time sensor data, and the evaluation of the repair effect.
[0014] As described above, it is a rapid evaluation device for the minimally invasive grouting repair effect of hidden diseases.
[0015] The present invention also provides a method for evaluating the minimally invasive grouting repair effect of roads, including the following steps:
[0016] Construction of a small-scale road model and experimental device: Select appropriate base materials such as soil or concrete to make a small-scale road model, ensuring that it has certain cracks or voids to simulate the damage of actual roads. Use a blade or other tools to design different types of cracks (such as vertical cracks, horizontal cracks, and inclined cracks), and ensure that the width and depth of the cracks can simulate actual road damage. Set the crack width to 0.5 - 5 mm as needed, and the setting position is controlled at 5 - 20 cm according to the specific setting area.
[0017] Simulation of grouting repair: Confirm that the grouting device can work properly, and the grouting pressure, flow rate, and grouting volume should be adjusted according to the test requirements. The grouting pressure range is set at 1 - 3 MPa, and the flow rate is controlled between 10 - 50 ml / min according to the size and depth of the cracks.
[0018] Monitoring with ion-selective sensors: Use a standard solution (such as a solution of known concentration of Ca 2+ , Cl - ) to calibrate the ion-selective sensors to ensure their measurement accuracy. Calibration is completed by comparing the standard solution with the sensor readings, ensuring that the error is less than 5%. Insert the ion-selective sensors into the crack area in the experimental device to monitor the concentrations of calcium ions (Ca 2+ ) and chloride ions (Cl - ) respectively. Two sensors can be used to monitor the two ions as needed.
[0019] Furthermore, if the calcium ion concentration stabilizes between 200 - 500 ppm and persists for a long time (more than 1 month), it indicates that the grouting material has successfully filled the cracks and undergone an effective chemical reaction with the environment, resulting in good repair effects. If the calcium ion concentration only rises to 50 - 100 ppm and then quickly drops, it shows that the grouting material has not fully reacted or failed to effectively fill the cracks, resulting in poor repair effects. The peak value of the calcium ion concentration usually appears within 24 - 72 hours after grouting and should then stabilize at a lower level unless there is continued entry of external water sources.
[0020] Furthermore, the chloride ion concentration should be maintained between 5 - 20 ppm within 1 - 3 months after grouting without a significant increase. A lower chloride ion concentration indicates that the grouting material effectively isolates external corrosive ions. If the chloride ion concentration continues to rise after grouting and exceeds 50 ppm, it means that the grouting material cannot effectively prevent the penetration of chloride ions. At this time, the crack repair effect is poor, and there may be problems with the permeability of the grouting material or the failure to effectively seal the cracks after repair.
[0021] Such as a rapid evaluation device and method for the repair effect of minimally invasive grouting for hidden diseases as described above.
[0022] In summary, the advantages and positive effects of the present invention are as follows: The present invention combines minimally invasive repair technology with the use of ion - selective sensors to provide an efficient and accurate method for evaluating the repair effect of road cracks. Through the minimally invasive grouting repair technology, local repair of road cracks is carried out, thus avoiding large - scale excavation and material waste that may be caused by traditional repair methods. At the same time, the present invention uses ion - selective sensors to monitor the repair effect in real - time. This innovative approach makes the evaluation of the repair effect more accurate. Traditional repair effect evaluation methods mostly rely on visual observation or mechanical property testing, while the present invention can reflect the reaction process between the grouting material and the crack environment in real - time by monitoring the changes in the concentrations of key ions such as calcium ions and chloride ions, and dynamically evaluate the repair effect. This method not only improves the reliability of the evaluation but also provides data support for different types of grouting materials and different repair schemes, further optimizing the repair strategy. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification without limiting the present invention. In the drawings:
[0024] Figure 1 It is a schematic diagram of the overall device structure of a rapid evaluation device for the repair effect of minimally invasive grouting for hidden diseases of the present invention;
[0025] Figure 2 It is a schematic diagram of the ion - selective sensor required for an evaluation device and method for the blockage degree of a vegetative porous concrete pavement of the present invention. Detailed implementation manners
[0026] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with embodiments. Unless otherwise specified, the equipment and reagents used in each embodiment and test example can be obtained from commercial channels.
[0027] The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0028] Embodiment 1
[0029] The present invention first discloses a rapid evaluation device for the repair effect of concealed diseases by minimally invasive grouting.
[0030] Preparation of a small road model: A small road model is established in a transparent test box. The length, width and height dimensions of the road model range from (40±10)×(15±10)×(40±10) cm. Select cement mortar as the base material of the small road model, and the mixing ratio is cement:sand:water = 1:3:0.5. Use a blade and a spatula to design 2 vertical cracks with a length of 50 cm and a width of 1.5 mm, and a depth of 20 mm. The setting position is the surface layer of the model road. Place the road model in the transparent test box to ensure that the model is firmly fixed and the opening of the transparent test box faces upward.
[0031] Grouting repair simulation: Connect the grouting pipe to the grouting port at the top of the transparent test box, and start the grouting device to start grouting. During the grouting process, observe the liquid crystal display device at all times to ensure that the grouting pressure and flow rate remain stable. Set the grouting pressure to 2 MPa and the flow rate to 20 ml / min. Select cement slurry as the grouting material and prepare it according to the ratio of cement:water = 2:1. Record the grouting volume as 300 ml and the grouting time as 20 minutes to ensure that the filling volume of each crack is uniform.
[0032] Monitoring and data collection: Use an ion selective sensor to monitor the concentrations of calcium ions (Ca 2+ ) and chloride ions (Cl - ). The sensor should be measured before grouting, 1 hour, 24 hours, and 72 hours after grouting. Calibrate the sensor before use with a standard solution to ensure the accuracy of the measurement. The calibration solutions are Ca 2+ 100 ppm and Cl - 100 ppm. Monitor using an ion selective sensor before grouting and at each time period after grouting. The results are shown in Table 1.
[0033] Table 1. Monitoring of grouting effect
[0034]
[0035] Evaluation of grouting effect: The chloride ion concentration decreased significantly over time, indicating that the grouting material successfully isolated the penetration of external corrosive substances. The calcium ion concentration gradually increased, indicating that the grouting material filled the cracks and improved the corrosion resistance of the repaired area by reacting with the concrete.
[0036] Example 2
[0037] Preparation of small - scale road model: A small - scale road model was established in a transparent test box. The length, width and height dimensions of the road model were in the range of (40 ± 10)×(15 ± 10)×(40 ± 10) cm. Low - strength concrete was used as the road model, and the mix ratio was: cement:sand:stone = 1:3:4. Larger stones were selected to simulate different roughnesses of the concrete. Three cracks with different lengths were set. The first crack was 40 cm long, 1.2 mm wide and 18 mm deep. The second crack was 50 cm long, 1.8 mm wide and 22 mm deep. The third crack was 60 cm long, 2.0 mm wide and 30 mm deep. The setting position was on the surface layer of the model road. The road model was placed in the transparent test box to ensure that the model was firmly fixed and the opening of the transparent test box faced upward.
[0038] Simulation of grouting repair: Connect the grouting pipe to the grouting port at the top of the transparent test box and start the grouting device to start grouting. During the grouting process, the liquid crystal display device should be observed at all times to ensure that the grouting pressure and flow rate remain stable. The grouting pressure was set at 1.5 MPa and the flow rate was set at 40 ml / min. Cement slurry was prepared with a cement:water ratio of 3:1. The grouting volume was 350 ml, and the grouting time was controlled at about 30 minutes.
[0039] Monitoring and data collection: Ion - selective sensors were used to monitor the calcium ion (Ca 2+ ) and chloride ion (Cl - ) concentrations. The sensors should be measured before grouting, 1 hour, 24 hours and 72 hours after grouting. The sensors were calibrated before use with standard solutions to ensure the accuracy of the measurement. The calibration solutions were Ca 2+ 100 ppm and Cl - 100 ppm. The ion - selective sensors were used to monitor before grouting and at each time period after grouting, and the results are shown in Table 2.
[0040] Table 2. Monitoring of grouting effect
[0041]
[0042] Evaluation of grouting effect: Although the chloride ion concentration decreased to some extent after grouting, the amplitude was small, indicating that the grouting material failed to completely isolate the external corrosive substances in the cracks, and the repair effect was not as expected. The calcium ion concentration gradually increased after grouting, but the increase amplitude was small and the expected anti-corrosion effect was not achieved. Analysis shows that the consistency of the grouting liquid is relatively high and it failed to fully penetrate deep into the cracks, so the repair effect of the crack area was not effectively strengthened.
Claims
1. A device and method for quickly evaluating the effect of minimally invasive grouting repair of hidden diseases, the structure of which comprises a transparent test box (1), a grouting device (2) and a small road simulation device (3) arranged in the transparent test box (1) for simulating the generation and repair of hidden road diseases, the transparent test box (1) being provided with an LED lighting lamp (7) for avoiding harmful light effects during long-term use, and a drainage device (8) being arranged at the bottom of the transparent test box (1); an ion selective sensor (4) is placed in the small road simulation device (3) to detect the concentrations of calcium ions and chloride ions in the small road simulation device (3) after grouting, the concentration of calcium ions can reflect the release of grouting materials and the repair effect, and the concentration of chloride ions can reflect whether the grouting materials can effectively isolate external corrosive substances, and the final detection result is intuitively displayed by a liquid crystal display device (6) as a research reference.
2. According to claim 1, a device and method for quickly evaluating the effect of minimally invasive grouting repair of hidden diseases, characterized in that: The entire device is placed in a transparent test box (1). The shell of the test box is made of high-strength transparent materials, such as organic glass (PMMA) or polycarbonate (PC). The box adopts a double-layer structure design, and the two layers are filled with insulation materials (such as polyurethane foam or air layer) to reduce temperature fluctuations and maintain the stability of the experimental environment. The length, width and height of the box are (80±10)×(60±10)×(60±10)cm. The top of the box is open for ventilation, and a drainage device (8) is set at the bottom. The other four sides are closed.
3. According to claim 1, a device and method for quickly evaluating the effect of minimally invasive grouting repair of hidden diseases, characterized in that: The test box is a transparent box, and an LED lighting lamp (7) is arranged on the top of the box, and the brightness of the lighting can be adjusted. The lighting system is UV-resistant to avoid harmful light effects during long-term use.
4. A rapid evaluation device and method for minimally invasive grouting repair effects of hidden diseases according to claims 1 and 3, characterized in that: There is a grouting device (2) on the top of the transparent test box. An electric pump or a pneumatic pump is provided in the grouting device (2) to provide external pressure to simulate the actual high-pressure grouting process. The pressure range of the pressure grouting is 1 to 3 MPa, ensuring that the grouting liquid can quickly penetrate into the cracks in the road. The grouting device needs to have a liquid flow control system, which can control the flow rate of the slurry by adjusting the flow valve. The flow control range is 10 to 300 mL / min.
5. A device and method for quickly evaluating the effect of minimally invasive grouting repair of hidden diseases according to claims 1 and 4, characterized in that: A small road simulation device (3) is arranged inside the box. The small road simulation device (3) has a complete road structure in actual application and physical properties similar to those of an actual road. The cracks in the simulated road model can be carved inside the model using a micro blade or laser. The width, depth and shape of the cracks should be adjusted according to experimental requirements. The base should be a cement-based material or light soil. The length, width and height of the road model range from (40±10)×(15±10)×(40±10)cm to simulate common road structures.
6. A device and method for quickly evaluating the effect of minimally invasive grouting repair of hidden diseases according to claims 1 and 3, characterized in that: An ion selective sensor (4) is provided in the road model. The ion selective sensor (4) is divided into a calcium ion sensor (Ca 2+ ) and chloride ion sensor (Cl - ), the ion selective sensor (4) should be installed in the crack area in contact with the small road simulation device (3) in the transparent test box (1) to ensure that the change in ion concentration after the grouting liquid enters the crack can be accurately monitored. The ion selective sensor (4) should cover the range of ion concentrations that may occur during the grouting process and be set between 0.01mM and 100mM. The accuracy of the sensor is controlled between 1% and 5%. The sensor that supports the pH range (3 to 11) is selected, and the specific range is determined according to the characteristics of the grouting liquid used in the experiment.
7. A device and method for quickly evaluating the effect of minimally invasive grouting repair of hidden diseases according to claims 1 and 3, characterized in that: A drainage device (8) is arranged at the bottom of the transparent test box to prevent excess liquid from accumulating during the grouting process. By arranging a drainage port and a liquid collection system, it is ensured that the seeping grouting liquid can flow out smoothly, and liquid leakage is prevented from polluting the box body and affecting the test results.
8. The device and method for rapidly evaluating the effect of minimally invasive grouting repair of hidden diseases according to claim 1, characterized in that: A liquid crystal display device (6) is provided on the front of the box, which can display various parameters of the test box in real time, such as temperature and humidity, grouting progress, real-time sensor data and evaluation of repair effects.
9. The device and method for rapidly evaluating the effect of minimally invasive grouting repair of hidden diseases according to claim 1, characterized in that: The ion selective sensor (4) evaluates the grouting effect by the changes in the concentration of calcium ions and chloride ions. The concentration of calcium ions can reflect the release of the grouting material and the repair effect. If the calcium ion concentration is stable between 200-500ppm and persists for a long time (more than one month), it means that the grouting material has successfully filled the cracks. The chloride ion concentration can reflect whether the grouting material can effectively isolate external corrosive substances. The chloride ion concentration should be maintained between 5-20ppm within 1-3 months without a significant increase, indicating that the anti-corrosion effect is excellent.