Grouting fullness monitor for reusable grouting sleeve

Abstract

The utility model discloses a reusable grouting fullness monitor for a grouting sleeve, which comprises a square elbow and a vertical stand pipe, the vertical stand pipe is provided with a sealing top, the sealing top is provided with an exhaust hole, the square elbow and the vertical stand pipe are made of transparent plastics, the square elbow and the vertical stand pipe both adopt a split buckling structure, and the square elbow and the vertical stand pipe are connected with the exhaust hole. The lower end of the square elbow is provided with an external thread connector connected with a grout outlet of the grouting sleeve, the upper end of the square elbow is in threaded connection with the lower end of the vertical stand pipe, a colorful observation stand rod is arranged in the vertical stand pipe, the lower portion of the colorful observation stand rod is fixedly connected with a piston, scales are arranged on the observation stand rod, and the upper end of the observation stand rod penetrates out of an exhaust hole. And a spring is clamped and pressed between the sealing top and the piston. According to the utility model, the fullness condition of the grouting material in the PC component sleeve can be indirectly judged by observing the fullness condition of the slurry in the vertical stand pipe; the device has a secondary slurry supplementing function; and therefore, the manufacturing cost is low, and the environment-friendly effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a reusable grouting sleeve grouting fullness monitoring device. Background Technology

[0002] Grouting of rebar sleeves is a critical control point in the on-site construction of prefabricated buildings, directly affecting the structural safety of the building. The fullness of the grouting, in particular, has always been a focus of attention, and its testing methods have been a key area of ​​research and a challenge for major research institutions and construction companies. Incomplete grouting of sleeves poses the following hazards:

[0003] 1) Steel reinforcement corrosion: If the grouting of the steel reinforcement sleeve is not saturated, it will cause the steel reinforcement surface to detach due to local oxidation, which will accelerate the corrosion of the steel reinforcement, thereby reducing the tensile strength and load-bearing capacity of the steel reinforcement and affecting the safety and service life of the building structure.

[0004] 2) Reduced structural mechanical properties: If the grouting of the steel reinforcement sleeve is not full, it will lead to a decrease in the bonding force of the concrete, thereby reducing the synergistic effect between the concrete and the steel reinforcement, and reducing the stress performance of the entire structure.

[0005] 3) Safety hazards: If the grouting of the steel reinforcement sleeve is not full, it will lead to insufficient anchorage of the building structure, resulting in serious consequences such as instability, deformation and collapse of the building structure, causing huge loss of life and property.

[0006] Most existing saturation monitors adopt an integral structure, which means they are disposable and cannot be reused. Utility Model Content

[0007] This utility model provides a reusable grouting sleeve grouting fullness monitor to solve the technical problems existing in the prior art.

[0008] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: a reusable grouting sleeve grouting fullness monitor, including a right-angle elbow and a vertical riser. The vertical riser is provided with a cap, and an exhaust hole is provided on the cap. Both the right-angle elbow and the vertical riser are made of transparent plastic. Both the right-angle elbow and the vertical riser adopt a split and interlocking structure. The lower end of the right-angle elbow is provided with an external threaded connector that connects to the grout outlet of the grouting sleeve. The upper end of the right-angle elbow is threadedly connected to the lower end of the vertical riser. A colored observation rod is provided inside the vertical riser. A piston is fixedly connected to the lower part of the colored observation rod. The observation rod is provided with a scale, and the upper end extends out of the exhaust hole. A spring is clamped between the cap and the piston.

[0009] The piston is made of a plastic sheet.

[0010] The right-angle elbow and the two halves of the vertical riser are connected by a film.

[0011] The external threaded connector at the lower end of the right-angle elbow adopts a quick-connect connector structure.

[0012] The advantages and positive effects of this utility model are as follows: A right-angle elbow connects the vertically upward-pointing riser to one side of the grouting sleeve. Applying the principle of communicating vessels, the fullness of the grout inside the PC component sleeve can be indirectly determined by observing the filling of the grout inside the riser. By installing a piston inside the riser and a spring on the piston, the monitor has a secondary grout replenishment function during the static stage after grouting, ensuring full grouting and improving the connection quality of the PC component. The split and interlocking structure of the riser and right-angle elbow allows for reuse after disassembly and cleaning, resulting in low cost and environmental friendliness. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the vertical riser of this utility model;

[0015] Figure 3 This is a schematic diagram of the right-angle elbow of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of this utility model in use.

[0017] In the diagram: 1. Vent hole; 2. Vertical riser; 3. Observation pole; 4. Spring; 5. Piston; 6. Right-angle elbow; 7. Threaded connector; 8-1, 8-2. Film; 9. Grouting sleeve; 9-1. Grout outlet; 10. Precast column or shear wall; 10-1. Connecting reinforcement. Detailed Implementation

[0018] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0019] Please see Figures 1-4A reusable grouting sleeve grouting fullness monitor includes a right-angle elbow 6 and a vertical riser 2. The vertical riser 2 has a cap with an exhaust hole 1 on the cap. Both the right-angle elbow 6 and the vertical riser 2 are made of transparent plastic and have a split and interlocking structure. The lower end of the right-angle elbow 6 has an external threaded connector 7 that connects to the grout outlet 9 of the grouting sleeve. The upper end of the right-angle elbow 6 is threaded to the lower end of the vertical riser 2. An observation rod 3 is provided inside the vertical riser 2. A piston 5 is fixed to the lower part of the observation rod 3. The observation rod 3 has a scale and the upper end extends through the exhaust hole 1. A spring 4 is clamped between the cap and the piston 5.

[0020] The more preferred solution in this embodiment is as follows:

[0021] The piston 5 is made of plastic sheet, which is convenient for on-site fabrication.

[0022] The right-angle elbow 6 and the two halves of the vertical riser 2 are connected by films 8-1 and 8-2, which can prevent them from separating after being broken apart and facilitate use.

[0023] The external threaded connector 7 at the lower end of the right-angle elbow 6 is a quick-connect connector, which is convenient for installation and use.

[0024] A more detailed explanation is as follows:

[0025] The vertical riser 2 adopts a split and interlocking structure, dividing into two halves along the longitudinal centerline to form left and right halves. Each half has grooves on its left and right edges, and the two halves are connected by pressing these grooves to form a single unit. After grouting, it can be disassembled and flushed before the grout solidifies, thus achieving reusability. A flexible connecting film at the bottom connects the two halves, strengthening the overall structure. A threaded end is provided at the lower inside of the pipe to allow for the insertion of the threaded connector at the upper end of the right-angle elbow.

[0026] The split and snap-fit ​​structure of the right-angle elbow 6 is similar to that of the vertical riser 2. It is also divided into two halves along the longitudinal center line to form left and right halves of the pipe. Each half of the pipe has a groove on its edge. The two halves of the pipe are connected by compression to form a whole. After grouting is completed, it can be disassembled and flushed before the grout solidifies, thus achieving the performance of being disassembled and reused. The lower end is provided with an external threaded connector, which can be easily inserted into the grout outlet hole of the connecting sleeve. The upper end is provided with a threaded connector that matches the thread size of the lower part of the vertical riser.

[0027] A spring and a graduated, colored observation rod are installed inside the vertical riser. In this embodiment, the observation rod is red. A circular plastic sheet of the same size as the inner diameter of the riser is fixed to the lower part of the observation rod, and the two are integrated. The spring passes through the riser and is placed above the circular plastic sheet.

[0028] In use, the monitor is installed on the grout outlet 9-1 of the grouting sleeve 9. The grouting sleeve 9 is fitted onto the connecting steel bar 10-1 of the precast column or shear wall 10. When the grout overflows from the outlet and enters the right-angle bend, and then enters the vertical riser through the right-angle bend, the grouting pressure of the grout lifts the circular plastic sheet and compresses the spring. When the grout in the monitor rises to the set height, it indirectly reflects that the grouting inside the PC component is also in a full grouting state. At this time, grouting can be stopped.

[0029] During the settling process after grouting, the grouting material inside the grouting sleeve will sink as the gas contained in the grout is released. The grouting sleeve of the PC component will gradually change from a full state to a less full state. At this time, the grout in the detector will fall back into the grouting sleeve under the combined action of the spring and its own gravity, thus playing a secondary grouting role and ensuring the fullness of the grouting material inside the PC component.

[0030] 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 other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and these all fall within the protection scope of the present invention.

Claims

1. A reusable grout sleeve grout fullness monitor comprising a right angle bend and a vertical riser, said vertical riser being provided with a cap, said cap being provided with a vent, said right angle bend and said vertical riser both being made of transparent plastic, characterised in that, The right-angle elbow and the vertical riser pipe are both provided with split and buckling structures, ​ The lower end of the right-angle elbow is provided with an external thread joint connected with a grouting sleeve outlet, the upper end of the right-angle elbow is threadedly connected with the lower end of the vertical riser pipe, a color observation riser is arranged in the vertical riser pipe, a piston is fixedly connected to the lower part of the color observation riser, a scale is arranged on the color observation riser, the upper end of the color observation riser penetrates through the exhaust hole, and a spring is clamped between the sealing top and the piston.

2. A reusable grout sleeve grout fullness monitor according to claim 1, wherein, The piston is made of a plastic sheet.

3. The reusable grout sleeve grout fullness monitor of claim 1, wherein, The right-angle elbow and the vertical riser pipe are connected by a film.

4. The reusable grout sleeve grout fullness monitor of claim 1, wherein, The external thread joint of the lower end of the right-angle elbow is provided with a quick plug joint structure.

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