Concrete reinforcing and grouting densification method
By coordinating the design of the air guide channel group and the transmission component, the problems of uneven vibration and poor gas discharge in concrete grouting construction are solved, achieving efficient compaction of the concrete reinforcement layer and stability of construction quality, and reducing construction costs and construction period.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-09
- Publication Date
- 2026-03-13
AI Technical Summary
In existing technologies, uneven vibration and poor gas discharge during concrete grouting construction can lead to non-dense structures such as voids and honeycombing. Furthermore, traditional formwork lacks integrated construction methods, resulting in large fluctuations in construction quality and increased costs and time.
The design employs a combination of air guide channels and a transmission component. The air guide channel group includes first and second air guide channels, with pads forming an arc-shaped flow guide surface. The transmission component is fixed to the template via a transmission pipe, and a vibrator is inserted into the transmission pipe for vibration. Combined with micro-expansion grout and an exhaust pipe to monitor the exhaust situation, the design ensures efficient gas discharge and compaction of the grout.
It achieves efficient compaction of the concrete reinforcement layer, eliminates voids, improves the density and construction quality of the concrete, reduces subsequent repair work, and lowers construction costs and time.
Smart Images
Figure CN121654264A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of building engineering technology, and in particular relates to a method for grouting and compacting concrete reinforcement. Background Technology
[0002] Enlarging the concrete cross-section is a common design method in structural reinforcement projects. The main construction method involves first treating the interface of the part of the original structure where the cross-section is to be increased, then installing rebar, binding rebar, installing formwork, and finally grouting to increase the load-bearing capacity or seismic performance of the concrete component.
[0003] Firstly, regarding the compactness of grout, current methods largely rely on construction workers' experience to vibrate the grout by externally striking the formwork. This vibration method has low energy transfer efficiency and extremely uneven distribution, making it difficult to ensure that the grout, especially high-viscosity grout, can flow fully and fill densely in a confined space. The direct consequence is that voids, honeycombs, and other non-dense phenomena are easily generated inside the reinforced layer and at the interface between new and old concrete, seriously affecting the integrity and durability of the structure. This problem is essentially a defect in the concrete forming and compaction process.
[0004] Furthermore, from the perspective of integrated structure and function, traditional formwork only serves as a molding mold and lacks a design that integrates functions such as venting, airflow guidance, and vibration transmission with the formwork body. For special working conditions in reinforcement projects, such as narrow spaces and complex interfaces, there is a lack of dedicated and efficient integrated construction methods, which often leads to large fluctuations in construction quality. Later, it is necessary to rely on drilling and grouting for repairs, which increases additional costs and construction time.
[0005] Therefore, there is an urgent need to design a concrete reinforcement grouting compaction method to solve the problems mentioned above. Summary of the Invention
[0006] The purpose of this invention is to provide a concrete reinforcement grouting compaction method, which has the advantages of grouting compaction to reinforce concrete and solves the problems mentioned in the background art.
[0007] To achieve the above objectives, the specific technical solution of the concrete reinforcement grouting compaction method of the present invention is as follows: A method for grouting and compacting concrete reinforcement includes the following steps: S1. Roughen the surface to expose the coarse aggregate, use a blower to remove loose dust, and apply a cement slurry interface agent. S2. Air guide grooves are provided on the template. Install the template according to the design drawings. S3. Install pads inside the air guide channel assembly; S4. Install an exhaust pipe on the top of the air guide duct assembly; S5. Install the conduction component on the template. The conduction component passes through the template and extends to the original structural surface. Fix the conduction component. S6. First, use high-flowability grouting material to grout the lower layer at 1 / 2 of the template height. When the grouting height reaches 1 / 2, insert the vibrator into the transmission component for vibration. S7. Before the lower layer of grouting material initially sets, the upper layer of grouting is carried out. The grouting material is micro-expansion grouting material, until grouting material continuously flows out of the exhaust pipe. S8. Cover with a damp linen cloth for maintenance; S9. Remove the formwork after curing is completed.
[0008] Furthermore, in S2, the air guide groove group includes a first air guide groove and a second air guide groove. Both the first air guide groove and the second air guide groove are opened on the template. The first air guide groove is set along the length of the template, and the second air guide groove is set perpendicular to the first air guide groove.
[0009] Furthermore, in S3, the pad is located at the intersection of the first air guide groove and the second air guide groove. The pad forms an arc-shaped flow guide surface at the intersection of the first air guide groove and the second air guide groove. The aggregate is guided and diverted to the first air guide groove or the second air guide groove by the arc-shaped flow guide surface.
[0010] Furthermore, the diameter of the pad is greater than the width of the first and second air guide grooves, so that an arc-shaped air chamber is formed at the intersection of the pad with the first and second air guide grooves, and the gas is discharged along the first air guide groove through the arc-shaped air chamber.
[0011] Furthermore, in S4, an exhaust pipe is connected to the top of the first air guide groove, the gas in the first air guide groove is discharged through the exhaust pipe, and the exhaust situation is monitored through the exhaust pipe.
[0012] Furthermore, in S5, the template has openings, through which the conductive components are inserted and extend to the original structural surface.
[0013] Furthermore, in S5, the conduction component includes a conduction tube that passes through the template and extends to the original structural surface. The conduction tube is sealed and fixed to the template. The conduction tube has a hollow cavity, and a vibrator is inserted into the hollow cavity for vibration.
[0014] Furthermore, ventilation holes are provided on the transmission pipe to promote gas discharge and grout flow.
[0015] Furthermore, the transmission tube includes a threaded section and a transmission section. The threaded section is fixedly connected to the transmission section. The threaded section is exposed at the end of the template away from the original structural surface, and the vent hole is opened on the transmission section.
[0016] Furthermore, a washer is fitted onto the threaded section, and a nut is screwed onto the threaded section. By tightening the nut on the threaded section, the transmission tube is fixed to the template, and the washer is located between the nut and the template.
[0017] The present invention has the following advantages: through the synergy of the air guide channel group and the transmission component, the gas is efficiently discharged, the void phenomenon is eliminated, the concrete density is significantly improved, and the problem of insufficient grouting at the interface between new and old concrete is completely solved. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the grouting construction structure of the present invention; Figure 2 This is a schematic diagram of the air guide groove assembly, opening, and conduction component of the present invention; Figure 3 This is a schematic diagram of the air guide groove assembly, pad block, and conduction section of the present invention; Figure 4 This is a schematic diagram of the structure of the nut, washer, and threaded section of the present invention; Figure 5 This is a schematic diagram of the original structural surface of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention where a template is installed on the original structural surface; Figure 7 This is a schematic diagram of the conductive component installed on the template according to the present invention; The markings in the diagram are as follows: 1. Template; 11. Air guide groove group; 111. Second air guide groove; 112. First air guide groove; 12. Opening; 13. Pad; 2. Conducting assembly; 21. Conducting pipe; 211. Conducting section; 212. Threaded section; 22. Vent hole; 23. Nut; 24. Washer; 3. Exhaust pipe. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.
[0021] The following is a reference to the appendix. Figure 1 To be continued Figure 7 This invention describes a method for grouting and compacting concrete reinforcement.
[0022] Due to the relatively small increase in concrete cross-sectional dimensions, traditional grouting techniques suffer from the following problems: (1) Workers rely on experience to tap and vibrate, which can easily cause holes; (2) When the grouting material has insufficient fluidity, the gas inside the template cannot be effectively discharged; (3) Conventional wooden formwork has no auxiliary venting structure and relies on later drilling and glue injection for repair.
[0023] Therefore, this concrete reinforcement grouting compaction method uses a grouting compaction device, which includes a template 1. A grouting space is formed between the template 1 and the original structural surface for the grout to be formed. An air guide groove group 11 is provided on the template 1. The top of the air guide groove group 11 passes through the template 1 and communicates with the outside, so as to guide the gas generated during the grouting process to be discharged from the air guide groove group 11 to the top. A transmission component 2 is provided on the template 1. The transmission component 2 passes through the template 1 and extends to the original structural surface. The transmission component 2 can accommodate the vibrator, so as to transmit the mechanical vibration of the vibrator to the surrounding grout through the transmission component 2.
[0024] Specifically, template 1 is made of 5mm thick steel plate, which is easy to clean and reuse multiple times. It is more durable than traditional wooden template 1, and template 1 is easy to dismantle.
[0025] Furthermore, the air guide groove group 11 includes a first air guide groove 112 and a second air guide groove 111. Both the first air guide groove 112 and the second air guide groove 111 are formed on the template 1. The first air guide groove 112 is set along the length of the template 1, and the top of the first air guide groove 112 penetrates through the template 1 and communicates with the outside. The second air guide groove 111 is set perpendicular to the first air guide groove 112. Specifically, the first air guide groove 112 is set longitudinally, and the second air guide groove 111 is set laterally. The first air guide groove 112 and the second air guide groove 111 form a grid-like exhaust network, covering the entire area of the template 1 and eliminating dead corners where gas stagnation occurs.
[0026] Preferably, both the first air guide groove 112 and the second air guide groove 111 are V-shaped air guide grooves. The V-shaped design optimizes the gas flow path, reduces gas stagnation, and avoids the formation of holes. Both the first air guide groove 112 and the second air guide groove 111 are 8mm wide, 4mm deep, and 60° at an angle. In other embodiments of the present invention, the first air guide groove 112 and the second air guide groove 111 may also be other shapes and other sizes.
[0027] Preferably, the first air guide groove 112 is arranged longitudinally along the template 1, with a spacing of 200mm between every two adjacent first air guide grooves 112, and the second air guide groove 111 is arranged laterally, with a spacing of 500mm between every two adjacent second air guide grooves 111. In other embodiments of the present invention, other spacings may also be used.
[0028] Currently, during the flow of grout, coarse aggregate (with a particle size of up to 10 mm) forms a mechanical interlock at the intersection of the first air guide groove 112 and the second air guide groove 111, and high-viscosity grout is prone to forming air pockets in the narrow space at the intersection of the first air guide groove 112 and the second air guide groove 111.
[0029] Therefore, a pad 13 is provided at the intersection of the first air guide groove 112 and the second air guide groove 111. The pad 13 forms an arc-shaped flow guide surface at the intersection of the first air guide groove 112 and the second air guide groove 111. When the grouting material front contacts the arc-shaped flow guide surface, a fluid stripping effect is generated. The aggregate is guided and diverted by the arc-shaped flow guide surface to the first air guide groove 112 or the second air guide groove 111, preventing the front surface of the grouting material from blocking the air guide groove group 11 during the pouring.
[0030] Preferably, the pad 13 can be fitted into the intersection of the first air guide groove 112 and the second air guide groove 111. The pad 13 can also be clamped to the intersection of the first air guide groove 112 and the second air guide groove 111 by interference fit. The pad 13 can also be glued to the intersection of the first air guide groove 112 and the second air guide groove 111 by adhesive. Other installation methods can also be selected for the intersection of the pad 13 and the first air guide groove 112 and the second air guide groove 111, as long as it can ensure that the pad 13 forms an arc-shaped flow guide surface and an arc-shaped air chamber at the intersection of the first air guide groove 112 and the second air guide groove 111.
[0031] The diameter of the pad 13 is larger than the width of the first air guide groove 112 and the second air guide groove 111, so that the intersection of the pad 13 with the first air guide groove 112 and the second air guide groove 111 forms an arc-shaped air chamber. The gas is discharged through the arc-shaped air chamber along the first air guide groove 112, thereby allowing the gas to pass smoothly at the intersection and ensuring that the exhaust system is unobstructed. Specifically, the pad 13 is a circular PVC pad with a radius of 12mm.
[0032] The top of the first air guide groove 112 is connected to an exhaust pipe 3. The gas in the first air guide groove 112 is discharged through the exhaust pipe 3, and the exhaust status is monitored through the exhaust pipe 3. When the gas has been completely discharged, the grouting material flows out continuously through the exhaust pipe 3. When the gas has not been completely discharged, the gas is continuously discharged through the exhaust pipe 3. The exhaust pipe 3 helps workers control the grouting progress and avoid waste and hole risks. Specifically, the exhaust pipe 3 is a transparent flexible tube made of rubber to facilitate observation of the exhaust status for visual monitoring.
[0033] The template 1 has an opening 12, and the conductive component 2 is inserted through the opening 12 and extends to the original structural surface. Specifically, the diameter of the opening 12 is 24mm.
[0034] The conduction component 2 includes a conduction pipe 21, which passes through the template 1 and extends to the original structural surface. The conduction pipe 21 is sealed and fixed to the template 1. The conduction pipe 21 has a hollow cavity, through which the vibrator is accommodated. Specifically, the conduction pipe 21 is inserted into the opening 12 and extends to the original structural surface. The diameter of the conduction pipe 21 is 22mm, and the conduction pipe 21 is a steel pipe.
[0035] By creating a hollow cavity in the conduction tube 21, a dual function is achieved: (1) As an insertion guide for the vibrating rod, it transmits mechanical vibration; (2) The venting is assisted by the vent 22, and the grouting density is optimized in conjunction with the air guide groove group 11.
[0036] Furthermore, the diameter of the hollow cavity is larger than the diameter of the vibrating rod, so that when the vibrating rod is inserted into the hollow cavity, there is a gap of about 1-2mm between the vibrating rod and the hollow cavity. This gap allows the vibrating rod to move freely, while ensuring that the gas in the vent 22 can be discharged, avoiding "jamming" or blockage.
[0037] Ventilation holes 22 are provided on the conduction pipe 21 to promote gas discharge and grout flow, and to avoid excessive local pressure during vibration. Ventilation holes 22 assist in venting when the vibrator is inserted to ensure uniform vibration distribution. Specifically, the ventilation holes 22 are arranged in a straight line, and the distance between every two adjacent ventilation holes 22 is 50mm.
[0038] The conduction tube 21 includes a threaded section 212 and a conduction section 211. The threaded section 212 is fixedly connected to the conduction section 211. The threaded section 212 is exposed at the end of the template 1 away from the original structural surface. The vent hole 22 is opened on the conduction section 211. The threaded section 212 is 50mm long, which is equivalent to 50mm of the conduction tube 21 being exposed.
[0039] A gasket 24 is fitted onto the threaded section 212, and a nut 23 is screwed onto the threaded section 212. By tightening the nut 23 on the threaded section 212, the transmission tube 21 is fixed to the template 1. The gasket 24 is located between the nut 23 and the template 1 to provide a seal and prevent grout leakage. Specifically, the gasket 24 is made of rubber.
[0040] When the nut 23 is tightened, it compresses the washer 24, causing it to expand radially and fill the 2mm gap. After being compressed, the washer 24 forms a continuous and sealed interface with the outer wall of the conduction pipe 21 and the hole wall of the template 1, blocking the slurry penetration path.
[0041] A method for grouting and compacting concrete reinforcement includes the following steps: S1. Roughen the surface to expose the coarse aggregate, use a blower to remove loose dust, and apply a cement slurry interface agent. S2. An air guide groove group 11 is provided on the template 1, and the template 1 is installed according to the design drawings; S3. Install pad 13 inside the air guide channel assembly 11; Specifically, a pad 13 is installed at the intersection of the first air guide groove 112 and the second air guide groove 111.
[0042] S4. Install the exhaust pipe 3 on the top of the air guide duct assembly 11; Specifically, an exhaust pipe 3 is installed on the top of the first air guide groove 112; S5. Install the conduction component 2 on the template 1. The conduction component 2 passes through the template 1 and extends to the original structural surface. Fix the conduction component 2. S6. First, use high-flowability grouting material to grout the lower layer at 1 / 2 of the height of template 1. When the grouting height reaches 1 / 2, insert the vibrator into the transmission component 2 for vibration. S7. Before the lower layer of grouting material initially sets, the upper layer of grouting is carried out. The grouting material is micro-expansion grouting material, until grouting material continuously flows out of the exhaust pipe 3. S8. Cover with a damp linen cloth for maintenance; S9. After the curing is completed, remove the formwork 1.
[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A method for grouting and compacting concrete reinforcement, characterized in that, Includes the following steps: S1. Roughen the surface to expose the coarse aggregate, use a blower to remove loose dust, and apply a cement slurry interface agent. S2. Air guide grooves are provided on the template. Install the template according to the design drawings. S3. Install pads inside the air guide channel assembly; S4. Install an exhaust pipe on the top of the air guide duct assembly; S5. Install the conduction component on the template. The conduction component passes through the template and extends to the original structural surface. Fix the conduction component. S6. First, use high-flowability grouting material to grout the lower layer at 1 / 2 of the template height. When the grouting height reaches 1 / 2, insert the vibrator into the transmission component for vibration. S7. Before the lower layer of grouting material initially sets, the upper layer of grouting is carried out. The grouting material is micro-expansion grouting material, until grouting material continuously flows out of the exhaust pipe. S8. Cover with a damp linen cloth for maintenance; S9. Remove the formwork after curing is completed.
2. The concrete reinforcement grouting compaction method according to claim 1, characterized in that, In S2, the air guide groove group includes a first air guide groove and a second air guide groove. Both the first air guide groove and the second air guide groove are opened on the template. The first air guide groove is set along the length of the template, and the second air guide groove is set perpendicular to the first air guide groove.
3. The concrete reinforcement grouting compaction method according to claim 2, characterized in that, In S3, the pad is located at the intersection of the first air guide groove and the second air guide groove. The pad forms an arc-shaped flow guide surface at the intersection of the first air guide groove and the second air guide groove. The aggregate is guided and diverted to the first air guide groove or the second air guide groove by the arc-shaped flow guide surface.
4. The concrete reinforcement grouting compaction method according to claim 3, characterized in that, The diameter of the pad is greater than the width of the first and second air guide grooves, so that an arc-shaped air chamber is formed at the intersection of the pad with the first and second air guide grooves, and the gas is discharged through the arc-shaped air chamber along the first air guide groove.
5. The concrete reinforcement grouting compaction method according to claim 2, characterized in that, In S4, an exhaust pipe is connected to the top of the first air guide groove. The gas in the first air guide groove is discharged through the exhaust pipe, and the exhaust situation is monitored through the exhaust pipe.
6. The concrete reinforcement grouting compaction method according to claim 1, characterized in that, In S5, the template has openings, and the conductive components are inserted through the openings and extend to the original structural surface.
7. The concrete reinforcement grouting compaction method according to claim 1 or 6, characterized in that, In S5, the conduction assembly includes a conduction tube that passes through the template and extends to the original structural surface. The conduction tube is sealed and fixed to the template. The conduction tube has a hollow cavity, and a vibrator is inserted into the hollow cavity for vibration.
8. The concrete reinforcement grouting compaction method according to claim 7, characterized in that, Ventilation holes are provided on the conduction pipe to facilitate gas discharge and grout flow.
9. The concrete reinforcement grouting compaction method according to claim 8, characterized in that, The conductive tube includes a threaded section and a conductive section. The threaded section is fixedly connected to the conductive section. The threaded section is exposed at the end of the template away from the original structural surface, and the vent is opened on the conductive section.
10. The concrete reinforcement grouting compaction method according to claim 9, characterized in that, A washer is fitted onto the threaded section, and a nut is screwed onto the threaded section. By tightening the nut on the threaded section, the transmission tube is fixed to the template, and the washer is located between the nut and the template.