Wood chip concrete prefabricated wallboard, preparation device and preparation method

Abstract

The invention provides a sawdust concrete prefabricated wallboard, a preparation device and a preparation method. The sawdust concrete prefabricated wallboard comprises a sandwich wallboard, the sandwich wallboard comprises an outer wood chip concrete board, a concrete layer and an inner wood chip concrete board; a plurality of tie connecting pieces are arranged in the sandwich wallboards; a decorative surface is arranged on the outer surface of the outer wood chip concrete plate; and a reinforcing mesh is laid in the concrete layer. In the invention, the wood chip concrete plates are used as the wallboards on the inner side and the outer side, are light in weight, are connected with the concrete layer more firmly, are provided with decorative surfaces, and have the characteristics of being good in sound insulation effect, convenient to construct, fast in construction progress, high in strength, not easy to damage, capable of saving construction cost and the like. In addition, the invention further provides a preparation device and a preparation method of the wood chip concrete prefabricated wall panel, the preparation device is matched with the preparation method, the wood chip concrete prefabricated wall panel is integrally formed, high connection strength is achieved, and a stable sound insulation structure is formed.

Description

Technical Field

[0001] The present application relates to the technical field of sound insulation wall panels, and in particular to a wood chip concrete prefabricated wall panel, a preparation device and a preparation method. Background Art

[0002] In recent years, the prefabricated construction industry has developed rapidly and achieved remarkable results. Precast concrete wall panels have been widely used in construction and municipal engineering. They are mainly used in non-load-bearing structures. Their main functions are to fence and separate areas. When used in buildings with sound insulation requirements and sound insulation protective walls on both sides of highways, it is necessary to do sound insulation treatment on the sides of ordinary precast concrete wall panels. Usually, it is necessary to paste sound insulation materials and then decorate them. Because the sound insulation materials are not easily bonded to the concrete, they are easy to fall off, and the thickness of the wall is increased, the floor area is increased, and the usable area is reduced. In addition, the sound insulation panels used are mostly polyester polymer materials with low strength and are not environmentally friendly. Summary of the invention

[0003] The present application provides a wood chip concrete prefabricated wall panel, a preparation device and a preparation method, which have the characteristics of one-piece molding, convenient construction, fast construction progress, high strength, not easy to damage, and saving construction costs.

[0004] In a first aspect, a wood chip concrete prefabricated wall panel is provided, the wood chip concrete prefabricated wall panel comprises a sandwich wall panel; the sandwich wall panel comprises an outer wood chip concrete panel, a concrete layer and an inner wood chip concrete panel which are sequentially bonded from the outside to the inside; wherein:

[0005] A plurality of tie-joints are provided between the outer wood chip concrete slab, the concrete layer and the inner concrete slab;

[0006] The outer surface of the outer sawdust concrete board is provided with a decorative surface;

[0007] A steel mesh is laid inside the concrete layer.

[0008] In the present invention, wood chip concrete boards are used as inner and outer wall boards, which are light in weight, more firmly connected to the concrete layer, and have decorative surfaces. They have good sound insulation effects, are easy to construct, have fast construction progress, are high in strength, are not easy to damage, and save construction costs.

[0009] In a specific implementation scheme, the outer sawdust concrete board and the inner sawdust concrete board are both formed by mixing cement slurry and antiseptic treated sawdust and then extruding them, which has a high weight reduction and sound absorption effect.

[0010] In a specific embodiment, the cement slurry and the wood chips are mixed and stirred at a weight ratio of 1:5. The wood chips have a strong compression ratio and form a thinner board after being compressed.

[0011] In a specific embodiment, the plurality of tie connectors are all glass fiber connectors;

[0012] A first end of each fiberglass connector is bonded to the outer wood chip concrete board;

[0013] The second end of each fiberglass connector is bonded to the inner wood chip concrete board;

[0014] The middle section of each glass fiber connector located between the first end and the second end is solidified with the concrete layer. A plurality of glass fiber connectors increase the connection strength among the outer wood chip concrete board, the concrete layer and the inner wood chip concrete board.

[0015] In a second aspect, a device for preparing a wood chip concrete prefabricated wall panel comprises a device body for invertedly preparing the wood chip concrete prefabricated wall panel as described in the first aspect;

[0016] The device body comprises: a die table, a die arranged on the die table, a pressing plate matched with the die, and a weight assembly;

[0017] The interior of the mold has a rectangular cavity matching the wood chip concrete wallboard;

[0018] When the sawdust slurry of a set specific gravity is located inside the rectangular cavity, the pressing plate is pressed onto the sawdust slurry and the weight assembly is located above the pressing plate and uniformly applies pressure for a set period of time to prepare the outer sawdust concrete board or the inner sawdust concrete board.

[0019] In the present invention, the preparation device is used to form a prefabricated wood chip concrete wall panel in one piece to form a good decorative surface, have a strong connection strength, and form a stable sound insulation structure.

[0020] In a specific possible implementation manner, the upper surface of the mold platform is provided with decorative patterns matching the decorative surface, and an integrated decorative surface is formed by the decorative patterns.

[0021] In a specific possible implementation scheme, the mold includes: four side molds;

[0022] The four side molds are connected as a whole by bolt assemblies, and lifting rings are arranged on the four side molds in a relative manner. By replacing side molds of different lengths, wood chip concrete prefabricated wall panels of different sizes can be formed.

[0023] In a specific embodiment, the pressing plate is provided with a plurality of through holes arranged in an array, and the plurality of through holes are matched one by one with the plurality of tie connectors. By assembling the fiberglass connectors in the through holes, the fiberglass connectors are separated from the pressing plate after solidification with the outer wood chip concrete board.

[0024] In a specific possible implementation scheme, the ballast assembly is a ballast block or a hydraulic telescopic rod equipped with a pressure value;

[0025] When the weight component is a weight block, the weight of the weight block is greater than 10 tons. The wood chip slurry is compressed and molded by applying a weight of more than 10 tons.

[0026] In a specific embodiment, the wood chip slurry with a set specific gravity is a slurry prepared by mixing cement slurry and antiseptic treated wood chips in a weight ratio of 1:5;

[0027] When the weight assembly is located above the pressure plate and applies pressure for a set period of time to prepare the outer sawdust concrete board or the inner sawdust concrete board,

[0028] The weight assembly is placed above the pressure plate and remains stationary for 2 hours to 8 hours. By pressing with a weight of more than 10 tons for more than 2 hours, the thickness of the inner and outer sawdust concrete panels is greatly reduced, forming a sawdust concrete prefabricated wall panel with the characteristics of one-piece molding, convenient construction, fast construction progress, high strength, not easy to damage, and saving construction costs.

[0029] In a third aspect, a method for preparing a wood chip concrete prefabricated wall panel comprises the following steps:

[0030] Step 1: Install the mold on the mold table with decorative patterns, and the mold height should be more than 40cm;

[0031] Step 2: Prepare a sawdust slurry by mixing cement slurry and antiseptic treated sawdust in a weight ratio of 1:5, and pour the sawdust slurry into the rectangular cavity of the mold and evenly lay it 30 cm thick;

[0032] Step 3: placing a pressing plate on top of the wood chip slurry, and inserting glass fiber connectors into the multiple through holes of the pressing plate;

[0033] Step 4: Use a weight assembly to apply a weight of more than 10 tons on the top of the pressing plate for 2 hours, and the sawdust slurry is compressed and condensed into an outer sawdust concrete plate with a thickness of 5 cm;

[0034] Step 5: Take out the pressing plate, pour 6 cm thick concrete on the outer sawdust concrete plate, and lay steel mesh during pouring. The concrete is vibrated and compacted to form a concrete layer;

[0035] Step 6: Prepare a sawdust slurry by mixing cement slurry and anti-corrosion treated sawdust in a weight ratio of 1:5, and pour the sawdust slurry onto the top of the concrete layer;

[0036] Step 7: Continue to place the pressing plate on top of the sawdust slurry and plug the through holes on the pressing plate;

[0037] Step 8: Use a weight assembly to apply a weight of more than 10 tons on the top of the pressing plate for 8 hours, and the sawdust slurry is compressed and condensed into an inner sawdust concrete plate with a thickness of 5 cm;

[0038] Step nine, after removing the pressing plate, naturally cure or steam cure until the concrete strength reaches 12MPa, use lifting equipment to demould and lift, and place outdoors for curing until 28 days before use.

[0039] Through the above method, the wood chip concrete prefabricated wall panel is formed in one piece, has a strong connection strength, and forms a stable sound insulation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the structure of a wood chip concrete prefabricated wall panel provided in an embodiment of the present application;

[0041] Figure 2 A cross-sectional view of a wood chip concrete prefabricated wall panel provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of the structure of a device for preparing a wood chip concrete prefabricated wall panel provided in an embodiment of the present application;

[0043] Figure 4 A flow chart of a method for preparing a wood chip concrete prefabricated wall panel provided in an embodiment of the present application.

[0044] Figure Number:

[0045] External wood chip concrete slab - 100, decorative surface - 110;

[0046] Concrete layer - 200;

[0047] Steel mesh-300;

[0048] Fiberglass connector-400;

[0049] Internal wood chip concrete slab - 500;

[0050] Moulding table-10, decorative pattern-11;

[0051] Mould-20, lifting ring-21;

[0052] Pressing plate-30, through hole-31, rubber plug-32;

[0053] Ballast-40, lifting ring-41. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0055] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0056] In order to facilitate the understanding of the wood chip concrete prefabricated wallboard, preparation device and preparation method provided in the embodiment of the present application, first explain its application scenario. The wood chip concrete prefabricated wallboard is mainly used in the field of sound insulation wallboard technology. In recent years, the prefabricated construction industry has developed rapidly and achieved remarkable results. Prefabricated concrete wallboards have been widely used in construction and municipal engineering. They are mainly used in non-load-bearing structures. The main function is to fence and separate areas. When used in buildings with sound insulation requirements and sound insulation protection walls on both sides of highways, it is necessary to do sound insulation treatment on the side of ordinary prefabricated concrete wallboards. Usually, it is necessary to paste sound insulation materials and then decorate them. Because the sound insulation materials are not old and easy to fall off when bonded to concrete, the thickness of the wall is increased, the floor area is increased, and the usable area is reduced. The sound insulation panels used are mostly polyester polymer materials with low strength and are not environmentally friendly. In view of this, the present application provides a wood chip concrete prefabricated wallboard, a preparation device and a preparation method, which have the characteristics of one-piece molding, convenient construction, fast construction progress, high strength, not easy to damage, and saving construction costs.

[0057] refer to Figure 1 and Figure 2 The wood chip concrete prefabricated wall panel provided in the embodiment of the present application includes a sandwich wall panel; the sandwich wall panel includes an outer wood chip concrete panel 100, a concrete layer 200 and an inner wood chip concrete panel 500 bonded in sequence from the outside to the inside; the sandwich wall panel is used as a sound insulation wall panel in the present application, which has stable connection performance and light weight. When assembled in buildings with sound insulation requirements and sound insulation protection walls on both sides of highways, the outer wood chip concrete panel 100 and the inner wood chip concrete panel 500 both have sound absorption effects, and the outer wood chip concrete panel 100 has a decorative surface 110, achieving the effect of one-piece molding and high bonding strength.

[0058] At the same time, in order to enhance the connection strength between the outer sawdust concrete board 100, the concrete layer 200 and the inner concrete board, a plurality of tie connectors are arranged between the outer sawdust concrete board 100, the concrete layer 200 and the inner concrete board; the plurality of tie connectors are all glass fiber connectors 400; the glass fiber connectors 400 are connected between the outer sawdust concrete board 100, the concrete layer 200 and the inner concrete board in an array arrangement. The distance between any two adjacent glass fiber connectors 400 is about 20 cm.

[0059] The first end of each glass fiber connector 400 is bonded to the outer wood chip concrete board 100; the second end of each glass fiber connector 400 is bonded to the inner wood chip concrete board 500; and the middle section of each glass fiber connector 400 between the first end and the second end is bonded to the concrete layer 200. The plurality of glass fiber connectors 400 increase the connection strength among the outer wood chip concrete board 100, the concrete layer 200 and the inner wood chip concrete board 500.

[0060] In order to reduce the disadvantages of the previous sound insulation wall panels that need to be pasted with sound insulation materials and then decorated, because the sound insulation materials are not bonded to the concrete, they are easy to fall off, and the thickness of the wall is increased, and the floor space is increased, the outer surface of the outer sawdust concrete board 100 in the present application is provided with a decorative surface 110; the decorative surface 110 is an integrally formed decorative surface 110, and the decorative surface 110 and the outer sawdust concrete board 100 are an integral structure, so they will not fall off. The appearance of the decorative surface 110 has a brick or marble texture.

[0061] In the embodiment of the present application, the outer sawdust concrete board 100 and the inner sawdust concrete board 500 are both formed by mixing cement slurry and sawdust after anti-corrosion treatment and then extruding and molding. It has a high weight reduction and sound absorption effect. The cement slurry and sawdust are mixed and stirred at a weight ratio of 1:5. The sawdust has a strong compression ratio, and a thinner board body is formed after being compressed. The sawdust in the embodiment of the present application is made of peeled trees and branches, dried, and then cut into irregular sawdust with a length of 30-50mm, a width of 2-5mm, and a thickness of about 0.2-0.4mm by a lathe. After anti-corrosion treatment, cement slurry is added and stirred, and then put into a mold 20 for extrusion molding. After extrusion molding, the outer sawdust concrete board 100 is formed, and then a concrete layer 200 is poured on the outer sawdust concrete board 100, and a steel mesh 300 is laid inside when pouring the concrete layer 200.

[0062] It can be seen that when the sawdust and cement slurry are extruded, the 30 cm thick sawdust and cement slurry are compressed under heavy pressure for more than 2 hours, so that they are solidified to form 5 cm thick outer sawdust concrete board 100 and inner sawdust concrete board 500, and the glass fiber connector 400 and the steel mesh 300 are embedded in the extrusion molding process, so that the sawdust concrete prefabricated wall panel has the characteristics of high connection strength and not easy to be damaged.

[0063] In the present application, wood chip concrete panels are used as the inner and outer wall panels, which are light in weight, more firmly connected to the concrete layer 200, and have an integrated decorative surface 110, and have the characteristics of good sound insulation effect, convenient construction, fast construction progress, high strength, not easy to damage, and saving construction costs.

[0064] Combination Figure 3 As shown in , the present application also provides a preparation device for a wood chip concrete prefabricated wall panel, including a device body for inverted preparation of the wood chip concrete prefabricated wall panel as described above; through the device body, the outer wood chip concrete panel 100, the concrete layer 200 and the inner wood chip concrete panel 500 are sequentially formed, so that it has the characteristics of high connection strength and integrated forming, and the outer wood chip concrete panel 100 has an integrated decorative surface 110 during extrusion forming. Specifically, the device body includes: a mold platform 10, a mold 20 set on the mold platform 10, a pressing plate 30 matched with the mold 20, and a weight assembly; the interior of the mold 20 has a rectangular cavity matched with the wood chip concrete wall panel; when the wood chip slurry of a set specific gravity is located inside the rectangular cavity, the pressing plate 30 presses on the wood chip slurry and the weight assembly is located above the pressing plate 30 and uniformly applies pressure for a set time to prepare the outer wood chip concrete panel 100 or the inner wood chip concrete panel 500.

[0065] The sawdust slurry is purchased from a wood processing plant and meets the requirements: irregular dry sawdust with a length of 30-50mm, a width of 2-5mm, and a thickness of about 0.2-0.4mm. A water-based sawdust preservative is prepared, and after adjusting with water at a ratio of 1:20-1:40, it is evenly sprayed on the sawdust, so that the sawdust is completely wetted and no preservative flows out. Cement slurry is prepared, and PO42.5 cement, water and water reducer are prepared and stirred at a ratio of 3:1:0.1. After stirring evenly, add the sawdust treated with antiseptic treatment and continue stirring. The cement slurry and sawdust are mixed and stirred at a weight ratio of 1:5.

[0066] A steel mold 20 is installed on the mold platform 10, and a decorative pattern 11 matching the decorative surface 110 is provided on the upper surface of the mold platform 10. The decorative pattern 11 forms an integrated decorative surface 110. The steel mold 20 includes: four side molds; the four side molds are connected as a whole by bolt assemblies, and lifting rings 21 are relatively provided on the four side molds. By replacing side molds of different lengths, wood chip concrete prefabricated wall panels of different sizes are formed.

[0067] Exemplarily, the size of the wood chip concrete prefabricated wall panel is 1 meter in width, 2.8 meters in length, and 0.16 meter in thickness. The four side molds are connected by four sides and installed on the mold base 10. Decorative patterns 11 can be set on the mold base 10 as needed to make the outer wood chip concrete board 100 have a brick or marble texture. The height of the mold 20 is set to be above 40 cm, for example, 42 cm, 43 cm, 44 cm, 45 cm and other heights.

[0068] When preparing the outer sawdust concrete board 100, the compression ratio of the sawdust slurry is 0.167. After evenly laying the sawdust slurry with a thickness of 30 cm in the mold 20, a press plate 30 with a width of 1 meter and a length of 2.8 meters is placed, and a weight of more than 10 tons is evenly applied on the press plate 30. After waiting for 2 hours, the press plate 30 is taken out. A plurality of through holes 31 are arranged in an array on the press plate 30, and the plurality of through holes 31 are matched with a plurality of tie connectors one by one. By assembling the glass fiber connector 400 in the through hole 31, the glass fiber connector 400 and the outer sawdust concrete board 100 are solidified and then the press plate 30 is removed.

[0069] When a weight of more than 10 tons is applied to the pressing plate 30, the weight component is a weight block 40 or a hydraulic telescopic rod equipped with a pressure value; in a specific embodiment, when the weight component is a weight block 40, the weight of the weight block 40 is greater than 10 tons. The wood chip slurry is compressed and formed by applying a weight of more than 10 tons. A lifting ring 41 is provided on the weight block 40, and the weight block 40 is placed on the pressing plate 30 by a lifting device, and a glass fiber connector 400 is installed inside the through hole 31 of the pressing plate 30, and the top of the glass fiber connector 400 does not extend out of the through hole 31, so that under the action of the weight block 40, the 30 cm thick outer wood chip concrete board 100 is gradually extruded into a 5 cm thick outer wood chip concrete board 100, and the first end of the glass fiber connector 400 is condensed with the inside of the outer wood chip concrete board 100.

[0070] When preparing the concrete layer 200, the outer wood chip concrete board 100 has been squeezed to a thickness of 5 cm after the pressing plate 30 is removed, and the outer wood chip concrete board 100 has an integrally formed decorative surface 110. Concrete is poured on the outer wood chip concrete board 100, and a steel mesh 300 with a pore size of 200 mm*200 mm is laid during the pouring of concrete, and then 6 cm thick C30 ordinary concrete is poured, and the concrete is poured and vibrated to be dense.

[0071] After the concrete layer 200 is poured, wood slurry is evenly laid on top with a thickness of 30 cm. After the wood slurry is laid, the pressing plate 30 is hoisted in again. At this time, in order to prevent the slurry from overflowing from the through hole 31, the through hole 31 can be blocked with a rubber plug 32 or the pressing plate 30 without a through hole can be replaced. A weight of more than 10 tons is evenly applied to the pressing plate 30. After 8 hours of squeezing, the pressing plate 30 is taken out and the wood slurry is compressed and condensed into an inner wood slurry concrete board 500 with a thickness of 5 cm. Because the thickness of the pressing plate 30 is greater than 10 cm, the fiberglass connector 400 penetrates the middle concrete layer 200, and the two ends penetrate into the outer wood slurry concrete board 100 and the inner wood slurry concrete board 500.

[0072] After removing the pressing plate 30, naturally cure or steam cure until the concrete strength reaches 12MPa, use lifting equipment to demould and lift, and place outdoors for curing until 28 days before use.

[0073] In the present invention, the preparation device is used to form a prefabricated wood chip concrete wall panel into an integrated form to form a good decorative surface 110, which has a strong connection strength and forms a stable sound insulation structure.

[0074] refer to Figure 4 In addition, the present application also provides a method for preparing a wood chip concrete prefabricated wall panel, comprising the following steps:

[0075] S1. Install a mold on a mold base engraved with decorative patterns, with a mold height of more than 40 cm; the upper surface of the mold base is provided with decorative patterns matching the decorative surface, and the interior of the mold has a rectangular cavity matching the wood chip concrete wallboard.

[0076] S2. Prepare a wood chip slurry that is mixed with cement slurry and anti-corrosion treated wood chips at a weight ratio of 1:5. Pour the wood chip slurry into the rectangular cavity of the mold and evenly lay it 30cm thick. The wood chip slurry is purchased from a wood processing plant and meets the requirements: irregular dry wood chips with a length of 30-50mm, a width of 2-5mm, and a thickness of about 0.2-0.4mm. Prepare a water-based wood chip preservative, adjust it with water at a ratio of 1:20-1:40, and evenly spray it into the wood chips, so that all the wood chips are wetted and no preservative flows out. Prepare cement slurry, mix PO42.5 cement with water and water reducer at a ratio of 3:1:0.1, mix and stir, add anti-corrosion treated wood chips after stirring evenly, and continue to stir. Mix the cement slurry and wood chips at a weight ratio of 1:5.

[0077] S3, placing a pressing plate above the sawdust slurry, and inserting glass fiber connectors into the multiple through holes of the pressing plate; assembling the glass fiber connectors in the through holes, and removing the pressing plate after the glass fiber connectors and the outer sawdust concrete board solidify.

[0078] S4. Use a weight assembly located above the pressing plate to apply a weight of more than 10 tons for 2 hours, and the sawdust slurry is compressed and condensed into an outer sawdust concrete slab with a thickness of 5 cm. The compression ratio of the sawdust slurry is 0.167. After evenly laying 30 cm thick sawdust slurry in the mold, place the pressing plate and evenly apply a weight of more than 10 tons on the pressing plate. Wait for 2 hours and then remove the pressing plate.

[0079] S5. Remove the pressing plate, pour 6cm thick concrete on the outer sawdust concrete slab, and lay steel mesh during pouring. The concrete is vibrated and compacted to form a concrete layer. After removing the pressing plate, the outer sawdust concrete slab has been squeezed to 5cm thick, and the outer sawdust concrete slab has an integrated decorative surface. Pour concrete on the outer sawdust concrete slab, and lay steel mesh when pouring concrete. The mesh aperture is 200mm*200mm, and then pour 6cm thick C30 ordinary concrete. Pour the concrete and vibrate to compact it.

[0080] S6. Prepare a wood chip slurry that is mixed with cement slurry and anti-corrosion treated wood chips at a weight ratio of 1:5, and pour the wood chip slurry on top of the concrete layer; the wood chip slurry is purchased from a wood processing plant and meets the requirements: irregular dry wood chips with a length of 30-50mm, a width of 2-5mm, and a thickness of about 0.2-0.4mm. Prepare a water-based wood chip preservative, adjust it with water at a ratio of 1:20-1:40, and spray it evenly on the wood chips, so that all the wood chips are wetted and no preservative flows out. Prepare cement slurry, mix PO42.5 cement with water and water reducer at a ratio of 3:1:0.1, mix and stir, add anti-corrosion treated wood chips after stirring evenly, and continue stirring. Mix the cement slurry and wood chips at a weight ratio of 1:5.

[0081] S7. Continue to place the pressing plate above the sawdust slurry and plug the through holes on the pressing plate. To prevent the sawdust slurry from overflowing from the through holes, use a rubber plug to plug the through holes or replace the pressing plate without through holes.

[0082] S8. Use a weight assembly located above the pressing plate to apply a weight of more than 10 tons for 8 hours, and the wood chip slurry is compressed and condensed into an inner wood chip concrete board with a thickness of 5 cm. Continue to evenly apply a weight of more than 10 tons on the pressing plate. After squeezing for 8 hours, remove the pressing plate and the wood chip slurry is compressed and condensed into an inner wood chip concrete board with a thickness of 5 cm. This allows the fiberglass connector to penetrate the middle concrete layer, with both ends penetrating into the outer wood chip concrete board and the inner wood chip concrete board to form a strong connection.

[0083] S9. After removing the pressing plate, naturally cure or steam cure until the concrete strength reaches 12MPa. Use lifting equipment to remove the mold and lift it, and place it outdoors for curing for 28 days before use.

[0084] Through the above method, the wood chip concrete prefabricated wall panel is formed in one piece, has a strong connection strength, and forms a stable sound insulation structure.

[0085] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as above, which are not provided in detail for the sake of simplicity.

[0086] In addition, to simplify the description and discussion, and in order not to obscure one or more embodiments of the present specification, known power / ground connections of other components may or may not be shown in the provided figures. In addition, the device may be shown in the form of a block diagram so as to avoid obscuring one or more embodiments of the present specification, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification are to be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0087] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. A wood chip concrete prefabricated wall panel, including a sandwich wall panel; characterized in that: The sandwich wall panel comprises an outer wood chip concrete board, a concrete layer and an inner wood chip concrete board which are sequentially bonded from the outside to the inside; wherein, The outer sawdust concrete board and the inner sawdust concrete board are both formed by mixing cement slurry and anti-corrosion treated sawdust and then extruding them into a shape; A plurality of tie-joints are provided between the outer wood chip concrete slab, the concrete layer and the inner concrete slab; The outer surface of the outer sawdust concrete board is provided with a decorative surface; A steel mesh is laid inside the concrete layer.

2. The wood chip concrete prefabricated wall panel according to claim 1, characterized in that: The cement slurry and the wood chips are mixed and stirred at a weight ratio of 1:

5.

3. The wood chip concrete prefabricated wall panel according to claim 1, characterized in that: The plurality of tie-connectors are all glass fiber connectors; A first end of each fiberglass connector is bonded to the outer wood chip concrete board; The second end of each fiberglass connector is bonded to the inner wood chip concrete board; A middle section of each glass fiber connector between the first end and the second end is bonded to the concrete layer.

4. A device for preparing a wood chip concrete prefabricated wall panel, characterized in that: It comprises a device body for inverted preparation of the wood chip concrete prefabricated wallboard as claimed in any one of claims 1 to 3; The device body comprises: a die table, a die arranged on the die table, a pressing plate matched with the die, and a weight assembly; The interior of the mold has a rectangular cavity matching the wood chip concrete wallboard; When the sawdust slurry of a set specific gravity is located inside the rectangular cavity, the pressing plate is pressed onto the sawdust slurry and the weight assembly is located above the pressing plate and uniformly applies pressure for a set period of time to prepare the outer sawdust concrete board or the inner sawdust concrete board.

5. The device for preparing the wood chip concrete prefabricated wallboard according to claim 4, characterized in that: The upper surface of the mold platform is provided with decorative patterns matching the decorative surface.

6. The device for preparing the wood chip concrete prefabricated wallboard according to claim 4, characterized in that: The mold comprises: four side molds; The four side molds are connected as a whole through a bolt assembly, and lifting rings are relatively arranged on the four side molds.

7. The device for preparing the wood chip concrete prefabricated wallboard according to claim 4, characterized in that: The pressing plate is provided with a plurality of through holes arranged in an array, and the plurality of through holes are matched with the plurality of tie-down connectors in a one-to-one correspondence.

8. The device for preparing wood chip concrete prefabricated wallboard according to claim 7, characterized in that: The ballast assembly is a ballast block or a hydraulic telescopic rod equipped with a pressure value; When the ballast assembly is a ballast block, the weight of the ballast block is greater than 10t.

9. The device for preparing wood chip concrete prefabricated wallboard according to claim 8, characterized in that: The sawdust slurry with a set specific gravity is a slurry obtained by mixing cement slurry and antiseptic treated sawdust in a weight ratio of 1:5; When the weight assembly is located above the pressure plate and applies pressure for a set period of time to prepare the outer sawdust concrete board or the inner sawdust concrete board, The weight assembly is positioned above the pressure plate and remains stationary for 2 hours to 8 hours.

10. A method for preparing a wood chip concrete prefabricated wall panel, characterized in that: The following steps are involved: Step 1: Install the mold on the mold table engraved with decorative patterns, the mold height is 40cm; Step 2: Prepare a sawdust slurry by mixing cement slurry and antiseptic treated sawdust in a weight ratio of 1:5, and pour the sawdust slurry into the rectangular cavity of the mold and evenly lay it 30 cm thick; Step 3: placing a pressing plate on top of the wood chip slurry, and inserting glass fiber connectors into the multiple through holes of the pressing plate; Step 4: Use a weight assembly to apply a weight of more than 10 tons on the top of the pressing plate for 2 hours, and the sawdust slurry is compressed and condensed into an outer sawdust concrete plate with a thickness of 5 cm; Step 5: Take out the pressing plate, pour 6cm thick concrete on the outer sawdust concrete plate, and lay steel mesh during pouring. After the concrete is vibrated and compacted, a 5cm thick concrete layer is formed; Step 6: Prepare a sawdust slurry by mixing cement slurry and anti-corrosion treated sawdust in a weight ratio of 1:5, and pour the sawdust slurry onto the top of the concrete layer; Step 7: Continue to place the pressing plate on top of the sawdust slurry and plug the through holes on the pressing plate; Step 8: Use a weight assembly to apply a weight of more than 10 tons on the top of the pressing plate for 8 hours, and the sawdust slurry is compressed and condensed into an inner sawdust concrete plate with a thickness of 5 cm; Step nine, after removing the pressing plate, naturally cure or steam cure until the concrete strength reaches 12MPa, use lifting equipment to demould and lift, and place outdoors for curing until 28 days before use.

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