Anti-drying shrinkage form for mass concrete construction

Abstract

The utility model relates to related technical field of concrete construction, especially a kind of anti-drying shrinkage form for mass concrete construction, including concrete form body and the moisturizing plate body of being set in the concrete form plate body outside, the moisturizing plate body includes water-retaining layer, connecting piece, humidity control layer and humidifying assembly.A kind of anti-drying shrinkage form for mass concrete construction in the utility model, humidifying assembly provides moisture to water-retaining layer, the humidity of the environment around concrete form body is kept by the synergic effect of water-retaining layer and humidity control layer, to effectively prevent the fracture of concrete form caused by drying, ensure construction quality.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete construction, and in particular to an anti-drying shrinkage formwork for large-volume concrete construction. Background Technology

[0002] In the construction of large-volume concrete, the large temperature difference between the inside and outside due to the heat of hydration, and the rapid evaporation of surface moisture, can easily lead to drying shrinkage cracks. Traditional curing methods (such as covering with geotextile and watering) rely on manual labor, which is inefficient and prone to uneven curing.

[0003] The related technology, with announcement number CN208563965U, describes a formwork for preventing shrinkage during the construction of large-volume concrete. By setting water distribution holes, water inlet pipes, and water outlet pipes, it can form wet curing on the concrete surface. The detachable formwork facilitates assembly and installation. By using a temperature sensor to control the temperature of the water in contact with the concrete surface, it can effectively solve the problems of temperature cracks and shrinkage cracks in concrete, thus achieving crack prevention.

[0004] The anti-drying shrinkage formwork used in the above-mentioned technology for concrete construction uses a single water-absorbing material, which cannot dynamically regulate humidity, leading to localized excessive moisture or dryness and failure. Utility Model Content

[0005] This utility model solves the problems in related technologies and proposes an anti-drying shrinkage formwork for large-volume concrete construction. The humidification component provides moisture to the water-retaining layer. Through the synergistic effect of the water-retaining layer and the moisture-controlling layer, the humidity of the environment around the concrete formwork body is maintained, thereby effectively preventing the concrete formwork from cracking due to dryness and ensuring construction quality.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a formwork for preventing shrinkage in large-volume concrete construction, comprising a concrete formwork body and a moisture-retaining plate disposed on the outside of the concrete formwork body, the moisture-retaining plate comprising a water-retaining layer disposed relative to the concrete formwork body, a connector disposed between the water-retaining layer and the concrete formwork body, a moisture-controlling layer disposed on the outside of the water-retaining layer, and a humidifying component disposed between the water-retaining layer and the moisture-controlling layer.

[0007] By adopting the above technical solution, the humidification component provides moisture to the water-retaining layer. Through the synergistic effect of the water-retaining layer and the moisture-controlling layer, the humidity of the environment around the concrete formwork is maintained, thereby effectively preventing the concrete formwork from cracking due to dryness and ensuring construction quality.

[0008] As a preferred embodiment, the connecting component includes a connecting flange disposed on the upper end face of the moisture-retaining board body at one end relative to the concrete template body. The connecting flange is integrally formed with the moisture-retaining board body, and the connecting flange is connected to the moisture-retaining board body through a snap-fit ​​structure or a screw connection structure.

[0009] By adopting the above technical solution, the main function of the connecting fold is to provide an interface for connecting the moisture-retaining board and the concrete formwork body, ensuring a stable connection between the two. Due to its own weight, the moisture-retaining board, under the action of the connecting components, not only adheres stably to the concrete formwork body, but also utilizes its own weight to increase the sealing and stability between the moisture-retaining board and the concrete formwork body.

[0010] As a preferred embodiment, the thickness of the water-retaining layer is set to 5-20 mm, and the water-retaining layer is made of fiber felt, water-absorbing resin gel or porous foam material, and the water absorption rate of the water-retaining layer is ≥200%.

[0011] By employing the above technical solution, the function of the water-retaining layer is to store and release moisture. Its thickness is set between 5 and 20 mm to ensure sufficient space for moisture storage and good water retention performance. The water-retaining layer can be made of fiber felt, water-absorbing resin gel, or porous foam material. These materials, due to their high water absorption rate (≥200%), can effectively store moisture and slowly release it to the surface of the concrete formwork, thereby maintaining a moist environment on the surface of the concrete formwork. Through its internal capillary action and physical adsorption, the water-retaining layer can continuously provide the necessary moisture during the construction of the concrete formwork, ensuring the moisture balance of the concrete formwork during the solidification process.

[0012] As a preferred embodiment, the moisture-controlling layer includes a microporous breathable membrane sheet disposed on the outer surface of the water-retaining layer and a humidity sensor uniformly disposed within the microporous breathable membrane sheet, wherein the pore size of the microporous breathable membrane sheet is 0.1–1 μm, and the moisture permeability is ≥1000 g / (m³). 2 •24h).

[0013] By adopting the above technical solution, the moisture-controlling layer is used to monitor and regulate the surface humidity of the water-retaining layer, and the microporous breathable membrane board serves to form a barrier that can both retain moisture and allow air circulation. Its pore size is 0.1–1 μm, ensuring a moisture permeability ≥1000 g / (m²). 2 (24h) This ensures moisture regulation while preventing excessive moisture loss. A humidity sensor is embedded in the water-retaining layer to monitor the surface humidity of the layer in real time and transmits the data to the controller terminal. Based on the feedback information from the humidity sensor, the controller terminal determines whether to humidify or replenish water through the humidification component.

[0014] As a preferred embodiment, the humidification component includes a main spray pipe with the same width as the water-retaining layer, a connection interface connected to the open end of the main spray pipe, spray branch pipes evenly arranged on the lower end face of the main spray pipe, and spray holes evenly arranged on each of the spray branch pipes relative to the water-retaining layer. The spray branch pipes are set at the same height as the water-retaining layer. The connection interface is externally connected to the spray system, and a control valve is provided on the connection interface. The control valve is bidirectionally electrically connected to a humidity sensor.

[0015] By employing the above technical solution, a humidity sensor monitors and adjusts the humidity of the water-retaining layer in real time. A control valve triggers the spray system to inject water into the main spray pipe. The water humidifies the water-retaining layer through the spray nozzles on the branch pipes. The water-retaining layer then transfers the humidity to the concrete formwork body in close contact with it. The main spray pipe in the humidification component maintains close contact with the water-retaining layer by being set at the same width as the main pipe, ensuring uniform humidification. The connection interface connects to the spray system and is bidirectionally electrically connected to the humidity sensor via a control valve, enabling automated control. The branch spray pipes are evenly distributed on the lower end face of the main spray pipe and at the same height as the water-retaining layer, ensuring that the spray nozzles are evenly distributed to spray water onto the water-retaining layer.

[0016] As a preferred embodiment, it further includes a first limiting groove and a second limiting groove respectively disposed on the inner side of the water-retaining layer and the humidity-controlling layer and adapted to the humidification component, wherein the first limiting groove and the second limiting groove are configured with the same curvature.

[0017] By adopting the above technical solution, the first limiting groove and the second limiting groove are respectively set inside the water-retaining layer and the humidity-controlling layer, and are adapted to the humidification component to ensure the stable installation of the humidification component and effective humidification operation.

[0018] Compared with the prior art, the beneficial effects of this utility model are: This utility model;

[0019] 1. The moisture-retaining board is connected to the concrete formwork body via connectors, which allows for easy assembly and disassembly;

[0020] 2. The water-retaining layer can transfer the water vapor generated by the humidification components to the concrete formwork body, maintaining the humidity around the concrete formwork body;

[0021] 3. The moisture control layer is used to monitor the humidification effect of the moisture-retaining board on the concrete formwork in real time, ensuring that the humidification conditions are suitable;

[0022] 4. The humidification component is responsible for providing an appropriate amount of moisture to the moisture-retaining board to prevent the concrete formwork from cracking due to dryness. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the anti-drying shrinkage formwork for large-volume concrete construction of this utility model;

[0024] Figure 2 This is an exploded view of the moisture-retaining board in the anti-drying shrinkage formwork for large-volume concrete construction of this utility model;

[0025] Figure 3 This is a structural schematic diagram of the water-retaining board and humidifying component for large-volume concrete construction according to this utility model;

[0026] Figure 4 This is a schematic diagram of the humidification component in the anti-drying shrinkage formwork for large-volume concrete construction of this utility model;

[0027] Figure 5 This is a schematic diagram of the moisture-controlling layer in the anti-drying shrinkage formwork for large-volume concrete construction of this utility model.

[0028] In the picture:

[0029] 1. Concrete formwork body; 2. Moisture-retaining board body; 21. Water-retaining layer; 211. Connecting folded edge; 212. First limiting groove; 22. Moisture-controlling layer; 221. Second limiting groove; 3. Humidification component; 31. Spray main pipe; 311. Connection interface; 3111. Control valve; 32. Spray branch pipe; 321. Spray hole; 4. Humidity sensor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0034] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0035] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0036] like Figures 1 to 5 As shown, a shrinkage-prevention formwork for large-volume concrete construction includes a concrete formwork body 1 and a moisture-retaining plate 2 disposed on the outside of the concrete formwork body. The moisture-retaining plate 2 includes a water-retaining layer 21 disposed relative to the concrete formwork body 1, a connector disposed between the water-retaining layer 21 and the concrete formwork body 1, a moisture-controlling layer 22 disposed on the outside of the water-retaining layer 21, and a humidification component 3 disposed between the water-retaining layer 21 and the moisture-controlling layer 22. In this invention, the moisture-retaining plate 2 is connected to the concrete formwork body 1 by the connector, allowing for easy assembly and disassembly. The water-retaining layer 21 can transfer water vapor generated by the humidification component 3 to the concrete formwork body 1, maintaining the humidity around the formwork. The moisture-controlling layer 22 is used to monitor the humidification effect of the moisture-retaining plate 2 on the concrete formwork body 1 in real time, ensuring suitable humidification conditions. The humidification component 3 is responsible for providing an appropriate amount of moisture to the moisture-retaining plate 2 to prevent the concrete formwork body 1 from cracking due to dryness. The overall working principle is as follows: the humidifying component 3 provides moisture to the water-retaining layer 21. Through the synergistic effect of the water-retaining layer 21 and the moisture-controlling layer 22, the humidity of the environment around the concrete formwork body 1 is maintained, thereby effectively preventing the concrete formwork from cracking due to dryness and ensuring construction quality.

[0037] Please refer to details. Figure 1 , Figure 2 , Figure 3 ,and Figure 4 The connecting component includes a connecting flange 211 disposed on the upper end face of the insulating board 2 relative to one end of the concrete formwork body 1. The connecting flange 211 is integrally formed with the insulating board 2 and is connected to the insulating board 2 via a snap-fit ​​structure or a screw-in structure. The main function of the connecting flange 211 is to provide an interface for connecting the insulating board 2 and the concrete formwork body 1, ensuring a stable connection between the two. Due to its own weight, the insulating board 2, under the action of the connecting component, can not only stably adhere to the concrete formwork body 1, but also increase the sealing and stability between the insulating board 2 and the concrete formwork body 1 using its own weight.

[0038] Please refer to details. Figure 2 , Figure 3 and Figure 4The thickness of the water-retaining layer 21 is set at 5-20 mm, and it is made of fiber felt, water-absorbing resin gel, or porous foam material. The water absorption rate of the water-retaining layer 21 is ≥200%. It is used to store and release moisture to the surface of the concrete formwork body 1. The function of the water-retaining layer 21 is to store and release moisture. Its thickness is set between 5 and 20 mm to ensure sufficient space for moisture storage and good water retention performance. The water-retaining layer 21 can be made of fiber felt, water-absorbing resin gel, or porous foam material. These materials, due to their high water absorption rate (≥200%), can effectively store moisture and slowly release it to the surface of the concrete formwork body 1, thereby maintaining a moist environment on the surface of the concrete formwork body 1. Through its internal capillary action and physical adsorption, the water-retaining layer 21 can continuously provide the necessary moisture during the construction of the concrete formwork body 1, ensuring the moisture balance of the concrete formwork body 1 during the solidification process.

[0039] Please refer to details. Figure 1 , Figure 2 and Figure 5 The moisture-controlling layer 22 includes a microporous breathable membrane sheet disposed on the outer surface of the water-retaining layer 21 and a humidity sensor 4 uniformly disposed within the microporous breathable membrane sheet. The pore size of the microporous breathable membrane sheet is 0.1–1 μm, and the moisture permeability is ≥1000 g / m³. 2 • For 24 hours, the moisture-controlling layer 22 is used to monitor and regulate the surface humidity of the water-retaining layer 21. The microporous breathable membrane sheet forms a barrier that can both retain moisture and allow air circulation. Its pore size is 0.1~1μm, ensuring a moisture permeability ≥1000g / m³. 2 • 24-hour operation ensures moisture regulation while preventing excessive moisture loss. A humidity sensor 4 is embedded in the water-retaining layer 21 to monitor the surface humidity of the layer in real time and transmit the data to the controller terminal. Based on the feedback from the humidity sensor 4, the controller terminal determines whether to humidify or replenish water using the humidification component 3.

[0040] Please refer to details. Figure 3 and Figure 4The humidification component 3 includes a main spray pipe 31 with the same width as the water-retaining layer 21, a connection interface 311 communicating with the open end of the main spray pipe 31, spray branch pipes 32 evenly arranged on the lower end face of the main spray pipe 31, and spray holes 321 evenly arranged on each spray branch pipe 32 relative to the water-retaining layer 21. The spray branch pipes 32 are set at the same height as the water-retaining layer 21. The connection interface 311 is externally connected to the spray system, and a control valve 3111 is provided on the connection interface 311. The control valve 3111 has bidirectional electrical... A humidity sensor 4 is connected to the humidification assembly 3. The humidity sensor 4 monitors and adjusts the humidity of the water-retaining layer 21 in real time. It triggers the spray system via a control valve 3111 to inject water into the main spray pipe 31. The water humidifies the water-retaining layer 21 through the spray holes 321 on the branch spray pipes 32. The water-retaining layer 21 transfers the humidity to the concrete formwork body 1 in close contact with it. The main spray pipe 31 in the humidification assembly 3 is set to the same width as the main spray pipe 31, ensuring uniform humidification. The connection interface 311 connects to the spray system and is bidirectionally electrically connected to the humidity sensor 4 via the control valve 3111, enabling automated control. The branch spray pipes 32 are evenly distributed on the lower end face of the main spray pipe 31 and at the same height as the water-retaining layer 21, ensuring that the spray holes 321 evenly distribute water to the water-retaining layer 21. Specifically, the spray nozzle 321 sprays water onto the water-retaining layer 21. After absorbing the water, the water-retaining layer 21, through close contact with the concrete formwork body 1, evenly transfers the water into the concrete formwork body 1, maintaining the humidity of the concrete formwork body 1. When the humidity sensor 4 detects a decrease in the humidity of the water-retaining layer 21, it triggers the control valve 3111 to open, controlling the spray system to inject water into the spray main pipe 31, ensuring the automatic humidification and humidity regulation functions of the entire system.

[0041] Please refer to details. Figure 2 , Figure 3 and Figure 5 It also includes a first limiting groove 212 and a second limiting groove 221 respectively disposed inside the water-retaining layer 21 and the humidity-controlling layer 22 to be adapted to the humidification component 3. The first limiting groove 212 and the second limiting groove 221 are set with the same curvature. The first limiting groove 212 and the second limiting groove 221 are respectively disposed inside the water-retaining layer 21 and the humidity-controlling layer 22 to be adapted to the humidification component 3, so as to ensure the stable installation of the humidification component 3 and the effective humidification operation.

[0042] In this embodiment, during use, the spray nozzles 321 spray water onto the water-retaining layer 21. After absorbing the water, the water-retaining layer 21, through close contact with the concrete formwork body 1, evenly transfers the water into the concrete formwork body 1, maintaining the humidity of the concrete formwork body 1. When the humidity sensor 4 detects a decrease in the humidity of the water-retaining layer 21, it triggers the control valve 3111 to open, controlling the spray system to inject water into the main spray pipe 31. The humidity sensor 4 monitors and adjusts the humidity of the water-retaining layer 21 in real time, and triggers the spray system to inject water into the main spray pipe 31 through the control valve 3111. The water humidifies the water-retaining layer 21 through the spray nozzles 321 on the spray branch pipe 32, and the water-retaining layer 21 transfers the humidity to the concrete formwork body 1 in close contact with it.

[0043] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A formwork for preventing shrinkage during large-volume concrete construction, characterized in that: The device includes a concrete formwork body (1) and a moisture-retaining plate (2) disposed on the outside of the concrete formwork body. The moisture-retaining plate (2) includes a water-retaining layer (21) disposed relative to the concrete formwork body (1), a connector disposed between the water-retaining layer (21) and the concrete formwork body (1), a moisture-controlling layer (22) disposed on the outside of the water-retaining layer (21), and a humidifying component (3) disposed between the water-retaining layer (21) and the moisture-controlling layer (22).

2. The anti-drying shrinkage formwork for large-volume concrete construction according to claim 1, characterized in that: The connector includes a connecting flange (211) disposed on the upper end face of the moisture-retaining board (2) at one end relative to the concrete template body (1). The connecting flange (211) is integrally formed with the moisture-retaining board (2), and the connecting flange (211) is connected to the moisture-retaining board (2) by a snap-fit ​​structure or a screw connection structure.

3. The anti-drying shrinkage formwork for large-volume concrete construction according to claim 2, characterized in that: The thickness of the water-retaining layer (21) is set to 5-20 mm, and the water-retaining layer (21) is made of fiber felt, water-absorbing resin gel or porous foam material, and the water absorption rate of the water-retaining layer (21) is ≥200%.

4. The anti-drying shrinkage formwork for large-volume concrete construction according to claim 3, characterized in that: The humidity control layer (22) includes a microporous breathable membrane plate disposed on the outer surface of the water-retaining layer (21) and a humidity sensor (4) uniformly disposed in the microporous breathable membrane plate, and the pore size of the microporous breathable membrane plate is 0.1~1μm.

5. The anti-drying shrinkage formwork for large-volume concrete construction according to claim 4, characterized in that: The humidification component (3) includes a main spray pipe (31) with the same width as the water-retaining layer (21), a connection interface (311) connected to the open end of the main spray pipe (31), spray branch pipes (32) uniformly arranged on the lower end face of the main spray pipe (31), and spray holes (321) uniformly arranged on each spray branch pipe (32) relative to the water-retaining layer (21).

6. The anti-drying shrinkage formwork for large-volume concrete construction according to claim 5, characterized in that: The spray pipe (32) is set at the same height as the water-retaining layer (21). The connection interface (311) is externally connected to the spray system, and a control valve (3111) is provided on the connection interface (311). The bidirectional electrical connection of the control valve (3111) is connected to the humidity sensor (4).

7. A formwork for preventing shrinkage during large-volume concrete construction according to claim 6, characterized in that: It also includes a first limiting groove (212) and a second limiting groove (221) adapted to the humidification component (3) respectively disposed on the inner side of the water-retaining layer (21) and the humidity-controlling layer (22), wherein the first limiting groove (212) and the second limiting groove (221) are configured with the same curvature.

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