Self-healing concrete structure with built-in hollow capsules

Abstract

The application relates to the field of building materials and discloses a self-repairing concrete structure with built-in hollow capsules, which comprises a concrete main body, a hollow capsule body is arranged in the concrete main body, and the hollow capsule body is provided with multiple groups; the hollow capsule body comprises a hollow shell one, a hollow shell two, a breakable diaphragm, an upper sealing plate, a lower sealing plate, a resin component and a curing agent component; the breakable diaphragm is fixedly connected between the hollow shell one and the hollow shell two; the upper sealing plate is fixedly connected to the upper ends of the hollow shell one and the hollow shell two; the lower sealing plate is fixedly connected to the bottom ends of the hollow shell one and the hollow shell two; the hollow capsule body further comprises a guide cone one and a guide cone two; and the guide cone one is fixedly connected to the top surface of the upper sealing plate. The application has the following advantages and effects: the hollow shell one and the hollow shell two which are composed of epoxy resin and glass fiber can greatly improve the strength and toughness of the hollow capsule body, and the hollow capsule body is not prone to damage during stirring and pouring.

Description

Technical Field

[0001] This application relates to the field of building materials technology, and in particular to a self-healing concrete structure with an internal hollow capsule. Background Technology

[0002] Concrete, as one of the most widely used materials in construction engineering, inevitably develops cracks over long-term use due to various factors such as load, temperature changes, and alternating wet and dry conditions. These cracks not only affect the appearance of the concrete structure but also reduce its load-bearing capacity, durability, and waterproofing performance, and may even lead to safety accidents. Repairing concrete cracks primarily employs reactive methods, such as applying repair agents to the surface or pressure grouting. However, these methods have many limitations. On the one hand, reactive repair requires significant manpower, resources, and time, especially for cracks in hidden areas or high-rise buildings, where repair is extremely difficult and costly. For example, in bridge engineering, repairing cracks inside box girders requires the construction of complex scaffolding, which not only disrupts traffic but also increases construction costs. On the other hand, reactive repair often only repairs surface cracks and cannot penetrate deep into the cracks for thorough repair, resulting in unsatisfactory repair effects and a high likelihood of crack recurrence.

[0003] In current technologies, with the development of materials science, self-healing concrete has become a research hotspot. Most existing self-healing concretes achieve their self-healing function by incorporating microcapsules into the concrete. These microcapsules encapsulate a repair agent; when cracks appear in the concrete, the microcapsules rupture, releasing the repair agent to repair the cracks. However, existing microcapsules have some problems, such as insufficient strength and toughness, making them prone to breakage during concrete mixing and pouring, leading to premature release of the repair agent and loss of repair effectiveness.

[0004] Therefore, we propose a self-healing concrete structure with an embedded hollow capsule to solve the above problems. Utility Model Content

[0005] In order to solve the problem that capsules are not strong and tough enough and are easily damaged during concrete mixing and pouring, this application provides a self-healing concrete structure with built-in hollow capsules.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a self-healing concrete structure with an internal hollow capsule, comprising a concrete body, wherein a hollow capsule body is disposed inside the concrete body, and multiple sets of hollow capsule bodies are disposed. The hollow capsule body includes a first hollow shell, a second hollow shell, a fragile diaphragm, an upper sealing plate, a lower sealing plate, a resin component, and a curing agent component. The fragile diaphragm is fixedly connected between the first hollow shell and the second hollow shell. The upper sealing plate is fixedly connected to the upper end of the first hollow shell and the second hollow shell. The lower sealing plate is fixedly connected to the bottom end of the first hollow shell and the second hollow shell.

[0007] By adopting the above technical solution, it is convenient to encapsulate the resin component and the curing agent component.

[0008] Optionally, the hollow capsule body further includes a guide cone one and a guide cone two, wherein the guide cone one is fixedly connected to the top surface of the upper sealing plate, and the guide cone two is fixedly connected to the bottom surface of the lower sealing plate.

[0009] By adopting the above technical solution, it is easy to guide the hollow capsule body, so that the hollow capsule body can be kept perpendicular to the concrete body inside the concrete body.

[0010] Optionally, the hollow shell one and hollow shell two are made of epoxy resin and glass fiber composite.

[0011] By adopting the above technical solution, hollow shell one and hollow shell two are less likely to break when mixed with concrete.

[0012] Optionally, the upper and lower sealing plates are made of epoxy resin and glass fiber composite.

[0013] By adopting the above technical solution, the upper and lower sealing plates can be made less prone to damage when mixed with concrete.

[0014] Optionally, a microcrack trigger groove is formed on the surface of the hollow shell, and multiple sets of microcrack trigger grooves are formed. Trigger grooves are formed on the side of the hollow shell.

[0015] By adopting the above technical solution, it is easier to break hollow shell one and hollow shell two when the wall cracks.

[0016] Optionally, the top surface of the upper sealing plate is provided with a second micro-crack trigger groove, and the bottom surface of the lower sealing plate is provided with a fourth trigger groove.

[0017] By adopting the above technical solution, it is easier to break the upper and lower sealing plates when the wall cracks.

[0018] Optionally, the concrete body is provided with transverse reinforcing bars and vertical reinforcing bars, the transverse and vertical reinforcing bars are distributed intersectingly, and the intersections of the transverse and vertical reinforcing bars are fixed with tie wires.

[0019] By adopting the above technical solutions, the strength of the concrete structure can be improved.

[0020] Optionally, the concrete body includes an outer layer, a middle layer, and an inner layer, with the middle layer located between the outer and inner layers. The transverse and vertical reinforcing bars are located inside the middle layer, and the number of hollow capsule bodies inside the outer and inner layers is higher than the number of hollow capsule bodies inside the middle layer.

[0021] By adopting the above technical solution, the hollow capsule body can be distributed in a gradient inside the concrete body, thereby reducing the amount of capsule used and lowering costs while ensuring the repair effect.

[0022] This application includes at least one of the following beneficial technical effects: This application utilizes hollow shell one and hollow shell two, which are composites of epoxy resin and glass fiber, to greatly improve the strength and toughness of the hollow capsule body, making it less prone to breakage during mixing and casting.

[0023] This application achieves a gradient density distribution of the hollow capsule body within the concrete matrix, which ensures the repair effect while reducing the amount of capsules used and lowering costs. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0025] Figure 2 yes Figure 1 A schematic diagram of the main concrete structure.

[0026] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle and outer layers.

[0027] Figure 4 yes Figure 3 A schematic diagram of the structure of the hollow capsule body.

[0028] Figure 5 yes Figure 3 A schematic diagram of the exploded structure of the hollow capsule.

[0029] In the diagram, 1. Concrete main body; 11. Outer layer; 12. Middle layer; 13. Inner layer; 14. Hollow capsule body; 141. Hollow shell one; 1411. Microcrack trigger groove one; 142. Hollow shell two; 143. Fragile diaphragm; 144. Upper sealing plate; 1441. Microcrack trigger groove two; 145. Lower sealing plate; 146. Resin component; 147. Curing agent component; 148. Guide cone one; 149. Guide cone two; 2. Horizontal reinforcement; 3. Vertical reinforcement. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a self-healing concrete structure with an internal hollow capsule, including a concrete body 1. The concrete body 1 contains multiple hollow capsule bodies 14. Each hollow capsule body 14 includes a first hollow shell 141, a second hollow shell 142, a fragile diaphragm 143, an upper sealing plate 144, a lower sealing plate 145, a resin component 146, and a curing agent component 147. The fragile diaphragm 143 is fixedly connected between the first hollow shell 141 and the second hollow shell 142. The upper sealing plate 144 is fixedly connected to the upper ends of the first hollow shell 141 and the second hollow shell 142. The lower sealing plate 145 is fixedly connected to the bottom ends of the first hollow shell 141 and the second hollow shell 142. The upper and lower ends of the first hollow shell 141 and the second hollow shell 142 can be sealed by the upper sealing plate 144 and the lower sealing plate 145.

[0032] The hollow capsule body 14 also includes a first guide cone 148 and a second guide cone 149. The first guide cone 148 is fixedly connected to the top surface of the upper sealing plate 144, and the second guide cone 149 is fixedly connected to the bottom surface of the lower sealing plate 145. The second guide cone 149 has a larger volume and mass than the first guide cone 148, so that the hollow capsule body 14 can remain upright when mixing inside the concrete.

[0033] Hollow Shell 141 and Hollow Shell 2 142 are made of epoxy resin and glass fiber composite. The epoxy resin and glass fiber composite has good mechanical properties and corrosion resistance, and can withstand the impact force during concrete mixing and pouring, and is not easily damaged.

[0034] The upper sealing plate 144 and the lower sealing plate 145 are made of epoxy resin and glass fiber composite. The epoxy resin and glass fiber composite has good mechanical properties and corrosion resistance, and can withstand the impact force during concrete mixing and pouring, and is not easily damaged.

[0035] The hollow shell 141 has a microcrack trigger groove 1411 on its surface, and multiple sets of microcrack trigger grooves 1411 are provided. The hollow shell 2 142 has a trigger groove 3 on its circumferential side.

[0036] The top surface of the upper sealing plate 144 is provided with a microcrack trigger groove 2 1441, and the bottom surface of the lower sealing plate 145 is provided with a trigger groove 4. The microcrack trigger groove 2 1441 is located at the upper end of the upper sealing plate 144 and is opened from the center outward.

[0037] The concrete body 1 is equipped with horizontal reinforcing bars 2 and vertical reinforcing bars 3. The horizontal reinforcing bars 2 and vertical reinforcing bars 3 are distributed intersectingly, and the intersection of the horizontal reinforcing bars 2 and vertical reinforcing bars 3 is fixed by tie wire. The horizontal reinforcing bars 2 and vertical reinforcing bars 3 are pre-embedded in the concrete mold.

[0038] The concrete body 1 includes an outer layer 11, a middle layer 12, and an inner layer 13. The middle layer 12 is located between the outer layer 11 and the inner layer 13. The horizontal reinforcing bars 2 and the vertical reinforcing bars 3 are located inside the middle layer 12. The number of hollow capsule bodies 14 inside the outer layer 11 and the inner layer 13 is higher than the number of hollow capsule bodies 14 inside the middle layer 12. First, a large number of hollow capsule bodies 14 are put into the concrete of the inner layer 13 and mixed evenly. Then, the concrete of the inner layer 13 is poured into the mold. Next, the middle layer 12 mixed with a small amount of hollow capsule bodies 14 is poured into the mold. Finally, the outer layer 11 mixed with a large number of hollow capsule bodies 14 is poured into the mold. At this time, the density of the hollow capsule bodies 14 inside the concrete body 1 can be distributed in a gradient.

[0039] With the above structure, the self-healing concrete structure with built-in hollow capsules provided in this application uses epoxy resin and glass fiber composite shells for hollow shell one 141 and hollow shell two 142, which greatly improves the mechanical properties of the hollow capsule body 14. At the same time, the hollow capsule body 14 uses a two-component repair agent inside, which is separated by a fragile diaphragm 143. The two components will only mix and react when hollow shell one 141 and hollow shell two 142 are broken. The compressive strength of the repaired crack can reach the strength of the concrete matrix, which is far superior to the repair effect of traditional single-component repair agents.

[0040] The hollow capsule body 14 has a high distribution density in the outer layer 11 and inner layer 13, which can repair surface cracks in a timely manner. The distribution density is lower in the middle layer 12. The gaps in the cracks usually become smaller from the outside to the inside. At the same time, through the action of the horizontal steel bars 2 and the vertical steel bars 3, the hollow capsule body 14 can ensure the repair effect inside the concrete body 1 while reducing the amount of capsule used and reducing costs.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-healing concrete structure with an embedded hollow capsule, characterized in that, The system includes a concrete body (1), inside which a hollow capsule body (14) is provided, and multiple sets of hollow capsule bodies (14) are provided. The hollow capsule body (14) includes a first hollow shell (141), a second hollow shell (142), a fragile diaphragm (143), an upper sealing plate (144), a lower sealing plate (145), a resin component (146), and a curing agent component (147). The fragile diaphragm (143) is fixedly connected between the first hollow shell (141) and the second hollow shell (142). The upper sealing plate (144) is fixedly connected to the upper end of the first hollow shell (141) and the second hollow shell (142). The lower sealing plate (145) is fixedly connected to the bottom end of the first hollow shell (141) and the second hollow shell (142).

2. The self-healing concrete structure with an internal hollow capsule as described in claim 1, characterized in that: The hollow capsule body (14) also includes a guide cone one (148) and a guide cone two (149). The guide cone one (148) is fixedly connected to the top surface of the upper sealing plate (144), and the guide cone two (149) is fixedly connected to the bottom surface of the lower sealing plate (145).

3. The self-healing concrete structure with an internal hollow capsule as described in claim 2, characterized in that: The hollow shell one (141) has a microcrack trigger groove one (1411) on its surface, and multiple sets of microcrack trigger groove one (1411) are provided. The hollow shell two (142) has a trigger groove three on its circumferential side.

4. A self-healing concrete structure with an internal hollow capsule as described in claim 3, characterized in that: The top surface of the upper sealing plate (144) is provided with a microcrack trigger groove 2 (1441), and the bottom surface of the lower sealing plate (145) is provided with a trigger groove 4.

5. A self-healing concrete structure with an internal hollow capsule as described in claim 4, characterized in that: The concrete body (1) is provided with transverse steel bars (2) and vertical steel bars (3). The transverse steel bars (2) and vertical steel bars (3) are distributed in a cross pattern, and the intersection of the transverse steel bars (2) and vertical steel bars (3) is fixed by tie wire.

6. A self-healing concrete structure with an internal hollow capsule as described in claim 5, characterized in that: The concrete body (1) includes an outer layer (11), a middle layer (12) and an inner layer (13). The middle layer (12) is located between the outer layer (11) and the inner layer (13). The transverse steel bars (2) and the vertical steel bars (3) are located inside the middle layer (12). The number of hollow capsule bodies (14) inside the outer layer (11) and the inner layer (13) is higher than the number of hollow capsule bodies (14) inside the middle layer (12).

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