Preparation of an experimental member of self-repairing concrete based on fiber glue liquid tube

Abstract

The application discloses a kind of experimental components preparation of self-repairing concrete based on fiber glue liquid pipe, it is related to self-repairing concrete technical field, including concrete block, still including fiber glue liquid pipe, its inside wall is fixedly installed with rotating column, the rotating column outer rotatable installation has semicircular baffle, the rotating column is fixedly installed with cross bar;The top and bottom of the fiber glue liquid pipe are all provided with through-hole, the through-hole is slidably installed with abutment rod, the abutment rod top is fixedly installed with arc cover, and the abutment rod bottom is between fiber glue liquid pipe inner side wall and is equipped with elastic element, by the design of the multiple section structure inside fiber glue liquid pipe, when fiber glue liquid pipe is broken by tension, waste phenomenon of self-healing agent backflow or overflow healing is not generated, let the self-healing of concrete be more scientific, perfect, so that the self-healing efficiency of self-healing concrete is higher, can effectively improve experimental efficiency.

Description

Technical Field

[0001] This invention relates to the field of self-healing concrete technology, and more particularly to the preparation of an experimental component of self-healing concrete based on fiber adhesive tubes. Background Technology

[0002] Concrete has a history of over 100 years. Due to its high compressive strength, good durability, and low cost, it has been widely used in engineering fields and is currently the most widely used building material. With the continuous advancement of materials science, concrete has gradually developed towards high strength, high performance, multifunctionality, and intelligence, and concrete structures are becoming larger and more complex. However, concrete is a porous and brittle material, and under the influence of use and the surrounding environment, microcracks and localized damage are inevitable. These damages can range from reducing the service life of the structure to jeopardizing its safety. Self-healing concrete is an innovative material with self-healing capabilities. It can automatically repair cracks and damage, extend the service life of the structure, and improve its durability. Common self-healing mechanisms of concrete include air curing, penetration crystallization, thermal polymerization, and thermo-induced healing.

[0003] In the existing technology, there exists a type of fiber-reinforced adhesive tube self-healing concrete, also known as pipe self-healing concrete. This is an innovative material that utilizes embedded fiber-reinforced adhesive tubes to achieve self-healing functionality. It works by pre-embedding a series of tiny tubes inside the concrete. When the concrete cracks, the fiber-reinforced adhesive flows out from the tubes, filling the cracks and forming a new gel-like material, thus achieving a self-healing effect.

[0004] However, in actual engineering applications, the self-healing agent inside the fiber adhesive tube often leaks back or overflows after the tube breaks. If the concrete structure cracks multiple times during use, it may face the dilemma of insufficient or no self-healing agent available, making it difficult to effectively achieve the self-repair effect of multiple cracks in the concrete structure. Summary of the Invention

[0005] The purpose of this invention is to provide an experimental component for self-healing concrete based on fiber adhesive tubes, in order to solve the problem that the fiber adhesive tubes are prone to backflow or overflow and cannot achieve long-term and repeated self-healing of concrete cracks.

[0006] This invention is achieved through the following technical solution:

[0007] The experimental component fabrication of self-healing concrete based on fiber adhesive tubes includes a concrete block and further comprises:

[0008] A fiber adhesive tube has a rotating column embedded in its inner wall, a semi-circular partition is rotatably mounted on the outside of the rotating column, and a cross rod is embedded in the rotating column.

[0009] The fiber adhesive tube has through holes at both the top and bottom. A stop rod is slidably installed in the through holes. An arc-shaped cover is fixedly installed on the top of the stop rod. An elastic element is provided between the bottom of the stop rod and the inner wall of the fiber adhesive tube. Through the multi-section structure design inside the fiber adhesive tube, the backflow or overflow of the self-healing agent will not cause waste during healing, which can effectively improve experimental efficiency.

[0010] Furthermore, there are two semicircular partitions, which are symmetrically distributed about the rotating column. An elastic element is provided between the two semicircular partitions. One end of the fiber adhesive tube is a closed sphere, and the other end is open, which facilitates handling, mixing with concrete, and injection of self-healing agent.

[0011] Furthermore, the arc-shaped cover is also provided with an auxiliary mechanism, which includes a rim ring. The rim ring is fixedly installed above the edge of the arc-shaped cover, and the top of the rim ring is inclined to the arc-shaped cover. A circular recess is opened on the outer upper surface of the arc-shaped cover, and an arc-shaped block is fixedly installed on the top of the arc-shaped cover. This can increase the gravity of the concrete remaining on the arc-shaped cover, thereby increasing the thrust of the concrete on the arc-shaped cover.

[0012] Furthermore, a guardrail is rotatably installed below the edge of the arc-shaped cover. The guardrail is initially tilted outwards. An arc-shaped plate is fixedly installed on the bottom lower surface of the arc-shaped cover. The bottom of the arc-shaped plate is located near the outer side wall of the guardrail to block external concrete, further reducing the amount of concrete entering below the arc-shaped cover and alleviating the obstruction to the operation of the arc-shaped cover.

[0013] Furthermore, the fiber adhesive tube is also equipped with a sealing mechanism, which includes a sealing block. The sealing block is circular in shape, and an annular triangular rubber block is provided on the outside of the connection of the sealing block. A cavity is opened at the connection of the sealing block. An annular triangular groove matching the annular triangular rubber block is opened on the inner side wall of the open end of the fiber adhesive tube. A cylindrical rod is fixedly installed on the outside of the fiber adhesive tube. This sealing method has a simple structure, is convenient and quick to operate, and effectively improves work efficiency.

[0014] Furthermore, an injection mechanism is provided outside the fiber adhesive tube. The injection mechanism includes a transfer plate, which is hollow inside. An input tube is fixedly installed at the input end of the top of the transfer plate, and an injection tube is fixedly installed at the output end of the bottom of the transfer plate. An annular triangular solid block is provided outside the output end of the injection tube. A pressure plate is rotatably installed outside the transfer plate. The pressure plate is arc-shaped near the outside of the injection tube. An elastic element is provided between the outside of the pressure plate and the outside of the transfer plate. This allows for very convenient injection of self-healing agent into the fiber adhesive tube. The operation is simple and effectively improves the injection efficiency.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. This invention, through the design of a multi-section structure inside the fiber adhesive tube, allows the self-healing agent inside one section of the fiber adhesive tube to flow out and solidify the crack when the fiber adhesive tube is fractured under tension. Meanwhile, the self-healing agent in other parts of the fiber adhesive tube is blocked by the multi-section structure of the semi-circular partition, thus preventing backflow or overflow healing. This makes the self-healing of concrete more scientific and perfect, resulting in higher self-healing efficiency of self-healing concrete. It also avoids the waste of self-healing agent due to backflow or overflow healing, effectively improving experimental efficiency and achieving long-term, repeated self-repair of cracks.

[0017] 2. In this invention, by setting up an auxiliary mechanism, the edge ring can slow down the initial flow velocity of the concrete, making it easier for it to stay on the arc-shaped cover. The circular pit can increase the contact area with the concrete, thereby increasing the gravity of the concrete staying on the arc-shaped cover, thus increasing the thrust of the concrete on the arc-shaped cover. The arc shape of the arc block can guide the concrete, allowing the concrete to move more smoothly to the surface of the arc-shaped cover and avoiding the phenomenon of uneven distribution caused by the concrete always flowing in the same direction.

[0018] 3. In this invention, by setting up a guardrail, external concrete can be blocked, further reducing the amount of concrete entering below the arc-shaped cover and reducing the obstruction to the operation of the arc-shaped cover. When the concrete is blocked by the guardrail, the limiting effect of the arc-shaped cover can prevent the guardrail from rotating clockwise and entering below the arc-shaped cover, so that the guardrail can always be set facing the outside of the arc-shaped cover 8. When the arc-shaped cover moves the guardrail downward until the guardrail contacts the surface of the fiber adhesive tube, the guardrail will rotate counterclockwise, thereby avoiding the guardrail itself from affecting the movement of the arc-shaped cover.

[0019] 4. This invention, by providing a sealing mechanism, allows for easy and quick sealing by inserting the sealing block into the fiber adhesive tube from its open end until the sealing block, along with the annular triangular rubber block, is positioned within the annular triangular groove. Simultaneously, the cavity of the sealing block replenishes the space lost during sealing. This sealing method is simple in structure, convenient and quick to operate, and effectively improves work efficiency. Furthermore, the injection mechanism allows for convenient injection of self-healing agent into the fiber adhesive tube, simplifying the operation and significantly improving injection efficiency. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0021] Figure 1This is a perspective structural diagram of the concrete block after mixing according to the present invention;

[0022] Figure 2 This is a schematic diagram of the external structure of the fiber adhesive tube;

[0023] Figure 3 This is a schematic diagram of the internal structure of a single section of the fiber adhesive tube;

[0024] Figure 4 This is a schematic diagram of the external front view of the semi-circular partition.

[0025] Figure 5 This is a schematic diagram of the external rear view of the semi-circular partition.

[0026] Figure 6 This is a schematic diagram of the external structure of the arc-shaped cover;

[0027] Figure 7 This is a schematic diagram of the bottom structure of the arc-shaped cover;

[0028] Figure 8 A top view of the external structure of a single section of the fiber adhesive tube;

[0029] Figure 9 A partial sectional view of the sealing block from the front;

[0030] Figure 10 This is a schematic diagram of the external structure of the transmission board;

[0031] Figure 11 This is a schematic diagram of the external structure of the injection tube.

[0032] The reference numerals in the attached drawings represent: 1-concrete block, 2-fiber adhesive tube, 3-rotating column, 4-semi-circular partition, 5-cross rod, 6-through hole, 7-stop rod, 8-arc cover, 9-arc block, 10-circular recess, 11-ring edge, 12-ballast plate, 13-arc plate, 14-cylindrical rod, 15-sealing block, 16-annular triangular rubber block, 17-annular triangular groove, 18-transfer plate, 19-input pipe, 20-injection pipe, 21-annular triangular solid block, 22-pressure plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are for illustrative purposes only and are not intended to limit the invention. It should be noted that this invention is already in the actual research and development stage.

[0034] like Figures 1 to 11 As shown, this embodiment includes a concrete block 1, and also includes:

[0035] The fiber adhesive tube 2 has a rotating column 3 embedded in its inner wall, a semi-circular partition 4 rotatably installed on the outside of the rotating column 3, and a cross rod 5 embedded in the rotating column 3.

[0036] There are two semicircular partitions 4, which are symmetrically distributed about the rotating column 3. By setting the semicircular partitions 4, the internal space of the fiber adhesive tube 2 can be divided into a multi-section structure, so that the self-healing agent in the fiber adhesive tube 2 can be dispersed and treated separately. An elastic element is provided between the two semicircular partitions 4. The elastic element here is a small metal spring, so that the rotation of the semicircular partition 4 has an elastic restoring force. After the semicircular partition 4 rotates, it can be restored to the initial position by the elastic force of the elastic element.

[0037] The fiber adhesive tube 2 has through holes 6 at both the top and bottom. A stop rod 7 is slidably installed in the through hole 6. An arc-shaped cover 8 is fixedly installed on the top of the stop rod 7. An elastic element is provided between the bottom of the stop rod 7 and the inner wall of the fiber adhesive tube 2. The elastic element here is a small metal spring, so that when the stop rod 7 is not in use, it is located above the semi-circular partition 4, which will not hinder the rotation of the semi-circular partition 4 and will not detach from the fiber adhesive tube 2. One end of the fiber adhesive tube 2 is a closed spherical shape, which is convenient to pick up and mix with concrete, and the other end is an open shape, which is convenient to inject self-healing agent.

[0038] In the above technical solution, by injecting the self-healing agent into the fiber adhesive tube 2, the fiber adhesive tube 2 serves as a healing conduit, maintaining its performance in the concrete for a long time, based on the process of human wounds from "rupture - bleeding - coagulation - healing". When concrete cracks under tension, these fiber adhesive tubes 2 also rupture (similar to blood vessel rupture during a fracture). The self-healing agent within quickly flows to the crack, solidifies, and hardens, thus achieving self-healing of the concrete crack. In this embodiment, by providing a semi-circular partition 4, the self-healing agent can only be injected by rotating to one side due to the obstruction of the cross rod 5. This allows the self-healing agent to pass through the semi-circular partition 4 and fill the entire interior of the fiber adhesive tube 2. After injection, the semi-circular partition 4 returns to its initial position due to the elastic force of the elastic element, dividing the interior of the fiber adhesive tube 2 into a multi-section structure. The fiber adhesive tube 2 and concrete are then placed together in a casting mold for integral molding. Due to the external compression of the concrete, the concrete will compress the arc-shaped cover 8 during mixing, thereby moving the arc-shaped cover 8 towards the fiber adhesive tube 2. The arc-shaped cover 8 will then drive the abutment rod 7 towards the fiber adhesive tube. The liquid tube 2 moves inward, allowing the abutment 7 to extend into the fiber adhesive tube 2 and block the rotation of the semi-circular partition 4. As the concrete component solidifies, the position of the abutment 7 is fixed, thus fixing the semi-circular partition 4 together with the cross rod 5 and the abutment 7, preventing it from rotating. This fixes the multi-section structure inside the fiber adhesive tube 2. Through the design of the multi-section structure inside the fiber adhesive tube 2, when the fiber adhesive tube 2 is fractured under tension, the self-healing agent inside one section of the fiber adhesive tube 2 flows out to solidify and harden the crack. The self-healing agent in other locations inside the fiber adhesive tube 2 is blocked by the multi-section structure of the semi-circular partition 4, preventing backflow or overflow healing. This makes the self-healing of concrete more scientific and perfect, resulting in higher self-healing efficiency of self-healing concrete and avoiding the waste of self-healing agent due to backflow or overflow healing, effectively improving experimental efficiency.

[0039] like Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, this invention also includes an auxiliary mechanism, comprising a rim ring 11. The rim ring 11 is fixedly installed above the edge of the arc-shaped cover 8, and the top of the rim ring 11 is inclined to the arc-shaped cover 8. This can slow down the initial flow velocity of the concrete, making it easier for it to settle on the arc-shaped cover 8. A circular recess 10 is provided on the outer upper surface of the arc-shaped cover 8. The circular recess 10 can increase the contact area with the concrete, thereby increasing the gravity of the concrete settling on the arc-shaped cover 8, thus improving the concrete's stability. The concrete pushes against the arc-shaped cover 8. An arc-shaped block 9 is fixedly installed on the top of the arc-shaped cover 8. The arc shape of the arc-shaped block 9 can guide the concrete, allowing it to move more smoothly onto the surface of the arc-shaped cover 8 and preventing the concrete from flowing in the same direction and causing uneven distribution. A guardrail 12 is rotatably installed below the edge of the arc-shaped cover 8. The guardrail 12 is initially tilted outward. An arc-shaped plate 13 is fixedly installed on the bottom surface of the arc-shaped cover 8. The bottom of the arc-shaped plate 13 is set close to the outer side of the inner wall of the guardrail 12.

[0040] In the above technical solution, during the mixing process of concrete and fiber adhesive pipe 2, the arc-shaped cover 8 is pushed downwards by the concrete. During this process, some concrete flows directly below the arc-shaped cover 8, obstructing its movement. By setting up the guardrail 12, the external concrete can be blocked, further reducing the amount of concrete entering below the arc-shaped cover 8 and alleviating the obstruction to its movement. When the concrete is blocked by the guardrail 12, the limiting effect of the arc-shaped plate 13 can prevent the guardrail 12 from rotating clockwise and entering below the arc-shaped cover 8, ensuring that the guardrail 12 always faces outwards from the arc-shaped cover 8. The rotating shaft portion at the top of the guardrail 12 is positioned below the edge of the arc-shaped cover 8, and also below the rim ring 11. This allows the rim ring 11 to protect the rotating shaft portion at the top of the guardrail 12, preventing the initial rotation of the guardrail 12 from being affected by the concrete. When the arc-shaped cover 8 moves the guardrail 12 downwards until the guardrail 12 contacts the surface of the fiber adhesive tube 2, the arc-shaped cover 8 will continue to move. At this time, the guardrail 12 will rotate counterclockwise due to its outward tilt and contact with the surface of the fiber adhesive tube 2, thus preventing the guardrail 12 itself from affecting the movement of the arc-shaped cover 8.

[0041] like Figure 2 and Figure 9As shown, the present invention also includes a sealing mechanism, which includes a sealing block 15. The sealing block 15 is circular in shape for easy handling and mixing with concrete. An annular triangular rubber block 16 is provided on the outside of the connection of the sealing block 15. A cavity is provided at the connection of the sealing block 15 to make up for the space lost due to sealing. An annular triangular groove 17 matching the annular triangular rubber block 16 is provided on the inner side wall of the opening end of the fiber adhesive tube 2. A cylindrical rod 14 is fixedly installed on the outside of the fiber adhesive tube 2. The cylindrical rod 14 can reduce the frictional damage between the surfaces of the fiber adhesive tubes 2 and maintain the distance between the fiber adhesive tubes 2 to prevent them from sticking together. This can also increase the resistance when mixing with concrete and prevent the fiber adhesive tubes 2 from moving and colliding and breaking during mixing.

[0042] In the above technical solution, after injecting the self-healing agent into the fiber adhesive tube 2, it is necessary to seal it to facilitate the subsequent mixing and molding operation. Simply insert the sealing block 15 into the fiber adhesive tube 2 from the open end until the sealing block 15 drives the annular triangular rubber block 16 into the annular triangular groove 17, and the sealing is completed. Furthermore, the self-healing agent that overflows from the fiber adhesive tube 2 due to the entry of the sealing block 15 can enter the cavity of the sealing block 15, thereby preventing the self-healing agent from overflowing during the sealing process. This sealing method has a simple structure, is convenient and quick to operate, and effectively improves work efficiency.

[0043] like Figure 10 and Figure 11 As shown, this invention also includes an injection mechanism, which includes a transmission plate 18. The transmission plate 18 is hollow to facilitate the passage of the self-healing agent. An input tube 19 is fixedly installed at the input end of the top of the transmission plate 18, and an injection tube 20 is fixedly installed at the output end of the bottom of the transmission plate 18. An annular triangular solid block 21 is provided outside the output end of the injection tube 20. A pressure plate 22 is rotatably installed outside the transmission plate 18. The pressure plate 22 is arc-shaped near the outside of the injection tube 20 to reduce pressure damage to the fiber adhesive tube 2. An elastic element is provided between the outside of the pressure plate 22 and the outside of the transmission plate 18. The elastic element here is a metal spring sheet, so that the rotation of the pressure plate 22 has an elastic restoring force.

[0044] In the above technical solution, when injecting self-healing agent into the fiber adhesive tube 2, the open end of the fiber adhesive tube 2 is inserted into the outside of the injection tube 20 until the fiber adhesive tube 2 drives the annular triangular groove 17 to coincide with the annular triangular solid block 21. At this time, the fiber adhesive tube 2 is installed. During this process, the outside of the fiber adhesive tube 2 will be squeezed outward by the arc shape of the pressure plate 22. At the same time, the pressure plate 22 will always be tightly attached to the outside of the fiber adhesive tube 2 due to the elastic force of the elastic element. After the fiber adhesive tube 2 is installed, the pressure plate 22 will provide pressure to the outside of the fiber adhesive tube 2. To maintain stability during the injection process, the self-healing agent is transferred to the inside of the transmission plate 18 through the input tube 19. The transmission plate 18 then injects the self-healing agent into the fiber adhesive tube 2 through the injection tube 20. After injection, the fiber adhesive tube 2 can be easily pulled out. Multiple injection tubes 20 can be installed on the transmission plate 18, allowing multiple tubes to be injected simultaneously, saving time. Finally, by providing an injection mechanism, the self-healing agent can be injected into the fiber adhesive tube 2 very conveniently. The operation is simple and effectively improves the injection efficiency.

[0045] In summary, the multi-section structure design inside the fiber adhesive tube 2 prevents backflow or overflow healing when the fiber adhesive tube 2 is fractured under tension. This makes the self-healing of concrete more scientific and complete, resulting in higher self-healing efficiency of the self-healing concrete. It also avoids the waste of self-healing agent due to backflow or overflow healing, effectively improving experimental efficiency and enabling long-term, repeated self-repair of cracks. The auxiliary mechanism reduces the movement obstruction of the arc-shaped cover 8, and the sealing and injection mechanisms improve the overall installation and usage efficiency.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A preparation of an experimental element of self-healing concrete based on a fiber glue liquid tube, comprising a concrete block (1), characterized in that, Also includes: A fiber adhesive tube (2) has a rotating column (3) embedded in its inner wall. A semi-circular partition (4) is rotatably installed on the outside of the rotating column (3). A cross rod (5) is embedded in the rotating column (3). The fiber adhesive tube (2) has through holes (6) at the top and bottom. A push rod (7) is slidably installed in the through hole (6). An arc-shaped cover (8) is fixedly installed on the top of the push rod (7). An elastic element is provided between the bottom of the push rod (7) and the inner wall of the fiber adhesive tube (2). There are two semicircular partitions (4) and they are symmetrically distributed about the rotating column (3). An elastic element is provided between the two semicircular partitions (4). One end of the fiber adhesive tube (2) is closed spherical and the other end is open. An injection mechanism is also provided outside the fiber adhesive tube (2). The injection mechanism includes a transmission plate (18). The transmission plate (18) is hollow inside. An input tube (19) is fixedly installed at the input end of the top of the transmission plate (18), and an injection tube (20) is fixedly installed at the output end of the bottom of the transmission plate (18). An annular triangular solid block (21) is provided outside the output end of the injection tube (20). A pressure plate (22) is rotatably installed outside the transmission plate (18). The pressure plate (22) is set in an arc shape near the outside of the injection tube (20). An elastic element is provided between the outside of the pressure plate (22) and the outside of the transmission plate (18). When installing the fiber adhesive tube (2), the open end of the fiber adhesive tube (2) is inserted into the outside of the injection tube (20) until the fiber adhesive tube (2) drives the annular triangular groove (17) to coincide with the annular triangular solid block (21).

2. A self-healing concrete experimental member based on a fiber glue solution tube according to claim 1, characterized in that: An auxiliary mechanism is also provided on the arc-shaped cover (8). The auxiliary mechanism includes a rim ring (11). The rim ring (11) is fixedly installed above the edge of the arc-shaped cover (8). The top of the rim ring (11) is inclined to the arc-shaped cover (8). A circular recess (10) is opened on the outer upper surface of the arc-shaped cover (8). An arc-shaped block (9) is fixedly installed on the top of the arc-shaped cover (8).

3. A self-healing concrete experimental member based on a fiber gel solution tube according to claim 2, characterized by: A railing (12) is rotatably installed below the edge of the arc-shaped cover (8). The railing (12) is initially tilted outward. An arc-shaped plate (13) is fixedly installed on the bottom lower surface of the arc-shaped cover (8). The bottom of the arc-shaped plate (13) is located near the outside of the inner side wall of the railing (12).

4. A self-healing concrete experimental member based on a fiber gel solution tube according to claim 3, characterized by: The fiber adhesive tube (2) is also provided with a sealing mechanism, which includes a sealing block (15). The sealing block (15) is circular in shape. An annular triangular rubber block (16) is provided on the outside of the connection of the sealing block (15). A cavity is opened at the connection of the sealing block (15). An annular triangular groove (17) matching the annular triangular rubber block (16) is opened on the inner side wall of the opening end of the fiber adhesive tube (2). A cylindrical rod (14) is fixedly installed on the outside of the fiber adhesive tube (2).

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