A prefabricated bamboo-based foamed concrete insulation wall panel and its production method

Abstract

This invention discloses a prefabricated bamboo-based foamed concrete insulation wall panel and its production method, belonging to the field of prefabricated building technology. It includes a foamed concrete wall panel, bamboo reinforcement, and bamboo tubes. Multiple bamboo reinforcements are arranged vertically in two rows at intervals, symmetrically positioned inside the front and rear walls of the foamed concrete wall panel. The bamboo tubes include small vertical tubes, large vertical tubes, and horizontal tubes. The small vertical tubes are arranged horizontally in two rows at intervals, with each row of small vertical tubes positioned inside the bamboo reinforcements, which are then tied together. Large vertical tubes are located at both ends of each row of small vertical tubes and are tied to the bamboo reinforcements. Horizontal bamboo tubes are positioned at the four corners of the concrete wall panel and tied together with the large vertical tubes. This invention uses bamboo instead of steel reinforcement to strengthen concrete, reducing material costs and offering environmental and economic advantages. The uniform addition of non-directional bamboo fibers to the foamed concrete gives the wall panel tensile and crack-resistant properties as well as thermal insulation capabilities.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a prefabricated bamboo foamed concrete insulated wall panel and its production method. Background Technology

[0002] Prefabricated buildings are one of the important directions of development in my country. In recent years, they have been widely used and the total market value has been steadily increasing. In terms of concrete walls, prefabricated concrete wall panels have advantages over traditional cast-in-place concrete structures, such as shorter construction cycle, less labor demand, strong adaptability, energy saving and environmental protection, and extended building life.

[0003] In current technologies, steel reinforcement is mostly used to support concrete walls. However, steel reinforcement production generates environmental pollution, and its cost, weight, and transportation are relatively high. Therefore, an alternative material is needed to address this issue. Currently, bamboo, due to its rapid growth, high strength, light weight, and renewability, is gradually becoming a popular choice for building materials. Recent research indicates that bamboo can not only replace traditional wood in construction but also combine with concrete to form new composite materials, improving the overall performance of buildings.

[0004] Based on the above, a prefabricated bamboo foamed concrete insulation wall panel and its production method are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated bamboo-based foamed concrete insulation wall panel and its production method to solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides a prefabricated bamboo-based foamed concrete insulation wall panel, comprising a foamed concrete wall panel and multiple bamboo ribs and multiple bamboo tubes disposed inside the foamed concrete wall panel. The multiple bamboo ribs are arranged vertically in two rows at intervals, and the two rows of bamboo ribs are symmetrically arranged inside the front and rear walls of the foamed concrete wall panel and close to the surface of the foamed concrete wall panel. The bamboo tubes include multiple small vertical bamboo tubes, four large vertical bamboo tubes, and four horizontal bamboo tubes. The multiple small vertical bamboo tubes are arranged horizontally in two columns at intervals, and each column of small vertical bamboo tubes is disposed inside the bamboo ribs. The bamboo ribs are tied to the small vertical bamboo tubes. Each column of small vertical bamboo tubes has a large vertical bamboo tube at both ends, and the large vertical bamboo tubes are tied to the bamboo ribs. The four horizontal bamboo tubes are respectively disposed at the four corners of the concrete wall panel, and the horizontal bamboo tubes are tied together with the large vertical bamboo tubes and located inside the large vertical bamboo tubes.

[0007] Preferably, the cross-sectional shape of the bamboo reinforcement is square, the width of the bamboo reinforcement is 1cm, the length is the same as the width of the foamed concrete wall panel, and the spacing between the bamboo reinforcements is 200mm.

[0008] Preferably, the diameter of the vertical bamboo tubes is 2cm, the length is the same as the height of the foamed concrete wall panel, and the spacing between them is 150~200mm.

[0009] The diameter of the vertical bamboo tube is 4-6cm, and the width is the same as the height of the foamed concrete wall panel. The vertical bamboo tube is 5-10cm away from the outer edge of the foamed concrete wall panel.

[0010] The diameter of the horizontal bamboo tube is 4-6 cm.

[0011] Preferably, both the bamboo strips and the bamboo tubes are subjected to high-temperature steam for corrosion prevention before use, and then coated with an epoxy resin anti-corrosion layer of 0.5~1mm.

[0012] Preferably, the foamed concrete wall panel is made of foamed concrete with a density of less than 500 kg / m³. 3 Compressive strength greater than 5MPa, thermal conductivity less than 0.12W / (m·K).

[0013] Preferably, non-directional bamboo fibers are uniformly added to the foamed concrete. The bamboo fibers have a length of 15-30 mm, a fineness of not less than 10 dtex, and a strength of not less than 1 CN / dtex. The amount of bamboo fibers is 0.02-0.1% of the dry weight of the foamed concrete.

[0014] Preferably, the foamed concrete wall panel has a width of 600mm, 1200mm, 1800mm or 2400mm and a thickness of 200mm, and a 15-25mm protective layer is provided between the bamboo reinforcement and the outer edge of the foamed concrete wall panel.

[0015] Preferably, the foamed concrete wall panel has a thickness of 200mm, a protrusion is provided at the center of one end of the foamed concrete wall panel, and a groove is provided at the center of the other end. The protrusion and the groove are adapted to each other. The protrusion height and the groove depth are both 10mm, the width of the protrusion and the width of the groove are both 60mm, and the cross-sectional shape of the protrusion and the groove are both trapezoidal with a slope of 40°.

[0016] This invention also provides a method for producing the above-mentioned prefabricated bamboo-based foamed concrete insulation wall panel, comprising the following steps:

[0017] S1. Purchase bamboo fiber and bamboo strips, small bamboo tubes and large bamboo tubes with the required cross-sectional dimensions. Open the internal bamboo nodes of the large bamboo tubes and cut bamboo strips, vertical small bamboo tubes, vertical large bamboo tubes and horizontal bamboo tubes according to the design length. The horizontal bamboo tubes are 2cm longer than the design length.

[0018] S2. Apply anti-corrosion treatment to the bamboo ribs, vertical small bamboo tubes, vertical large bamboo tubes and horizontal bamboo tubes. Tie the bamboo ribs, vertical small bamboo tubes and vertical large bamboo tubes together according to the design requirements to form two bamboo mesh sheets.

[0019] S3. Set up the wall casting template according to the flat wall form, apply release agent to the inner wall of the template, place small bamboo boards with protective layer thickness on the bottom plate of the template, and place the first bamboo mesh; then place horizontal bamboo tubes, with the bottom of the horizontal bamboo tubes directly contacting the template, and tie the horizontal bamboo tubes to the first bamboo mesh.

[0020] S4. Place the second bamboo mesh piece and tie it to the horizontal bamboo tube to form a bamboo frame;

[0021] S5. Prepare foamed concrete according to the design density and strength, add bamboo fiber according to the proportion, pour the foamed concrete into the mold for curing, and remove the mold after the concrete compressive strength reaches 50% of the design strength standard value.

[0022] S6. Cut off the part of the horizontal bamboo tube that protrudes from the wall, cure it to the design strength, and complete the production of the thermal insulation wall panel.

[0023] Preferably, for the finished insulation wall panels, the installation steps are as follows:

[0024] 1) Clean the ground until it is flat and smooth, lay 10mm mortar, thread the hoisting rope through the horizontal bamboo tube, lift the wall panel and place it in the predetermined position;

[0025] 2) Apply foam adhesive to the gaps at the top of the wall panels and use horizontal bamboo tubes and vertical bamboo tubes to run electrical wires, network cables and other cables;

[0026] 3) Fill the gaps in the horizontal bamboo tubes with foam adhesive, let it dry, and then decorate the wall to complete the installation.

[0027] Therefore, this invention relates to a prefabricated bamboo foamed concrete insulation wall panel and its production method. By using bamboo instead of steel bars to reinforce concrete, material costs can be reduced, and it is low-carbon and environmentally friendly. At the same time, bamboo has excellent tensile strength compared to steel bars, and its weight is low, which can reduce transportation costs. It can also maintain sufficient structural strength and stability, and has advantages in terms of environmental protection and economy.

[0028] Secondly, the uniform addition of non-directional bamboo fiber to the foamed concrete gives the wall panel excellent tensile and crack resistance as well as thermal insulation capabilities; the bamboo tubes, bamboo reinforcements, and foamed concrete work together to make the wall panel lighter while ensuring quality.

[0029] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of the bamboo reinforcement portion according to an embodiment of the present invention;

[0032] Figure 3 This is a cross-sectional view of the bottom structure according to an embodiment of the present invention;

[0033] Figure label:

[0034] 1. Foamed concrete wall panel; 2. Bamboo reinforcement; 3. Vertical small bamboo tubes; 4. Vertical large bamboo tubes; 5. Horizontal bamboo tubes; 6. Protrusions; 7. Grooves. Detailed Implementation

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0037] Example

[0038] like Figures 1-3 As shown, this invention provides a prefabricated bamboo-based foamed concrete insulation wall panel, comprising a foamed concrete wall panel 1 and multiple bamboo reinforcing bars 2 and multiple bamboo tubes disposed inside the foamed concrete wall panel 1. The foamed concrete wall panel 1 is made of foamed concrete, which has advantages such as lightweight, high strength, and thermal insulation. The density of the foamed concrete is less than 500 kg / m³. 3 The compressive strength is greater than 5 MPa, and the thermal conductivity is less than 0.12 W / (m·K). Non-directional bamboo fiber is uniformly added to the foamed concrete to enhance the durability of the wall panel and improve its tensile and crack resistance. The bamboo fiber has a length of 15~30 mm, a fineness of not less than 10 dtex, and a strength of not less than 1 CN / dtex. The bamboo fiber content is 0.02~0.1% of the dry weight of the foamed concrete.

[0039] The foamed concrete wall panel 1 has a width of 600mm, 1200mm, 1800mm or 2400mm and a thickness of 200mm. A protrusion 6 is provided at the center of one end of the foamed concrete wall panel 1, and a groove 7 is provided at the center of the other end. The protrusion 6 and the groove 7 are matched. The protrusion height of the protrusion 6 and the recess depth of the groove 7 are both 10mm. The width of the protrusion 6 and the width of the groove 7 are both 60mm. The cross-sectional shape of both the protrusion 6 and the groove 7 is trapezoidal with a slope of 40°. This structure facilitates the installation and tight connection between wall panels.

[0040] Multiple bamboo strips 2 are arranged vertically in two rows at intervals. The two rows of bamboo strips 2 are symmetrically arranged inside the front and rear walls of the foamed concrete wall panel 1 and close to the surface of the foamed concrete wall panel 1. The cross-sectional shape of the bamboo strip 2 is a square with a side length of 1cm. The width of the bamboo strip 2 is 1cm, and the length is the same as the width of the foamed concrete wall panel 1. The bamboo strips 2 are spaced 200mm apart. A protective layer of 15~25mm is provided between the bamboo strips 2 and the outer edge of the foamed concrete wall panel 1.

[0041] The bamboo tubes consist of multiple small vertical bamboo tubes 3, four large vertical bamboo tubes 4, and four horizontal bamboo tubes 5. All bamboo tubes are made of natural bamboo. They are treated with high-temperature steam or hot oil to evaporate internal moisture, reducing the risk of rot and insect infestation. Then, a waterproof and anti-corrosion coating, such as epoxy resin, is applied to the surface of the bamboo tubes to prevent moisture penetration and further reduce corrosion. The surface of each bamboo tube is sanded to remove the outer bamboo shoots and enhance adhesion to concrete. Applying epoxy resin adhesive to the surface of the bamboo tubes can further strengthen the bond between the bamboo tubes and the concrete.

[0042] Multiple vertical bamboo tubes 3 are arranged horizontally in two rows at intervals. The diameter of the vertical bamboo tubes 3 is 2cm, and the length is the same as the height of the foamed concrete wall panel 1. The spacing between them is 150~200mm. Each row of vertical bamboo tubes 3 is placed inside the bamboo reinforcement 2, and the bamboo reinforcement 2 is tied to the vertical bamboo tubes 3. At each end of each row of vertical bamboo tubes 3, there are two vertical bamboo tubes 4. The diameter of the vertical bamboo tubes 4 is 4~6cm, and the width is the same as the height of the foamed concrete wall panel 1. The vertical bamboo tubes 4 are 5~10cm away from the outer edge of the foamed concrete wall panel 1. The vertical bamboo tubes 4 are tied to the bamboo reinforcement 2. The diameter of the horizontal bamboo tubes 5 is 4~6cm. Four horizontal bamboo tubes 5 are placed at the four corners of the concrete wall panel. The horizontal bamboo tubes 5 are tied together with the vertical bamboo tubes 4 and are located inside the vertical bamboo tubes 4.

[0043] Both bamboo strips and bamboo tubes undergo high-temperature steam treatment for corrosion prevention before use, and then a 0.5~1mm epoxy resin anti-corrosion layer is coated on the surface.

[0044] This invention also provides a method for producing the above-mentioned prefabricated bamboo-based foamed concrete insulation wall panel, comprising the following steps:

[0045] S1. Purchase bamboo fiber and bamboo ribs 2, small bamboo tubes and large bamboo tubes that meet the cross-sectional dimensions of the composite. Open the internal bamboo nodes of the large bamboo tube and cut bamboo ribs 2, vertical small bamboo tubes 3, vertical large bamboo tubes 4 and horizontal bamboo tubes 5 according to the design length. Among them, the horizontal bamboo tubes 5 are 2cm longer than the design length.

[0046] S2. Perform anti-corrosion treatment on bamboo ribs 2, vertical small bamboo tubes 3, vertical large bamboo tubes 4 and horizontal bamboo tubes 5. Tie bamboo ribs 2, vertical small bamboo tubes 3 and vertical large bamboo tubes 4 together according to design requirements to form two bamboo mesh sheets.

[0047] S3. Set up the wall casting template according to the flat wall form, apply release agent to the inner wall of the template, place a small bamboo board with a protective layer thickness of 4 to 8 square centimeters on the bottom plate of the template, and place the first bamboo mesh; then place the horizontal bamboo tube 5, with the bottom of the horizontal bamboo tube 5 directly contacting the template, and tie the horizontal bamboo tube 5 to the first bamboo mesh.

[0048] S4. Place the second bamboo mesh piece and tie it to the horizontal bamboo tube 5 to form a bamboo frame;

[0049] S5. Prepare foamed concrete according to the design density and strength, add bamboo fiber according to the proportion, pour the foamed concrete into the mold for curing, and remove the mold after the concrete compressive strength reaches 50% of the design strength standard value.

[0050] S6. Cut off the 2cm portion of the horizontal bamboo tube 5 that protrudes from the wall, cure it to the design strength, and complete the production of the thermal insulation wall panel.

[0051] The installation steps for the completed insulation wall panels are as follows:

[0052] 1) Clean the ground until it is flat and smooth, lay 10mm mortar, pass the hoisting rope through the horizontal bamboo tube 5, lift the wall panel and place it in the predetermined position;

[0053] 2) Apply foam adhesive to the gaps at the top of the wall panels and use horizontal bamboo tubes 5 and vertical large bamboo tubes 4 to run electrical wires, network cables and other cables.

[0054] 3) Fill the gaps in the wiring of the horizontal bamboo tube 5 with foam glue, and after it dries, decorate the wall to complete the installation.

[0055] Therefore, the present invention provides a prefabricated bamboo-based foamed concrete insulation wall panel and its production method, which uses bamboo to replace steel bars to reinforce concrete, reducing material costs and having environmental and economic advantages; moreover, the foamed concrete contains uniformly added non-directional bamboo fibers, giving the wall panel excellent tensile and crack resistance as well as thermal insulation capabilities.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A prefabricated bamboo-based foamed concrete insulation wall panel, characterized in that: The device includes a foamed concrete wall panel and multiple bamboo ribs and multiple bamboo tubes disposed inside the foamed concrete wall panel. The multiple bamboo ribs are arranged vertically in two rows at intervals. The two rows of bamboo ribs are symmetrically arranged inside the front and rear walls of the foamed concrete wall panel and close to the surface of the foamed concrete wall panel. The bamboo tubes include multiple small vertical bamboo tubes, four large vertical bamboo tubes, and four horizontal bamboo tubes. The multiple small vertical bamboo tubes are arranged horizontally in two columns at intervals. Each column of small vertical bamboo tubes is disposed inside the bamboo ribs, and the bamboo ribs are tied to the small vertical bamboo tubes. Each column of small vertical bamboo tubes has a large vertical bamboo tube at both ends, and the large vertical bamboo tubes are tied to the bamboo ribs. The four horizontal bamboo tubes are respectively disposed at the four corners of the foamed concrete wall panel, and the horizontal bamboo tubes are tied together with the large vertical bamboo tubes and located inside the large vertical bamboo tubes. The foamed concrete wall panel is made of foamed concrete, and the density of the foamed concrete is less than 500 kg / m³. 3 Compressive strength greater than 5MPa, thermal conductivity less than 0.12W / (m·K); The foamed concrete contains uniformly added non-directional bamboo fibers. The bamboo fibers have a length of 15-30 mm, a fineness of not less than 10 dtex, and a strength of not less than 1 CN / dtex. The amount of bamboo fibers is 0.02-0.1% of the dry weight of the foamed concrete. The production method of the above-mentioned prefabricated bamboo foamed concrete insulation wall panel includes the following steps: S1. Purchase bamboo fiber and bamboo strips, small bamboo tubes and large bamboo tubes with the required cross-sectional dimensions. Open the internal bamboo nodes of the large bamboo tubes and cut bamboo strips, vertical small bamboo tubes, vertical large bamboo tubes and horizontal bamboo tubes according to the design length. The horizontal bamboo tubes are 2cm longer than the design length. S2. Apply anti-corrosion treatment to the bamboo ribs, vertical small bamboo tubes, vertical large bamboo tubes and horizontal bamboo tubes. Tie the bamboo ribs, vertical small bamboo tubes and vertical large bamboo tubes together according to the design requirements to form two bamboo mesh sheets. S3. Set up the wall casting template according to the flat wall form, apply release agent to the inner wall of the template, place small bamboo boards with protective layer thickness on the bottom plate of the template, and place the first bamboo mesh; then place horizontal bamboo tubes, with the bottom of the horizontal bamboo tubes directly contacting the template, and tie the horizontal bamboo tubes to the first bamboo mesh. S4. Place the second bamboo mesh piece and tie it to the horizontal bamboo tube to form a bamboo frame; S5. Prepare foamed concrete according to the design density and strength, add bamboo fiber according to the proportion, pour the foamed concrete into the mold for curing, and remove the mold after the concrete compressive strength reaches 50% of the design strength standard value. S6. Cut off the part of the horizontal bamboo tube that protrudes from the wall, cure it to the design strength, and complete the production of the thermal insulation wall panel.

2. The prefabricated bamboo-based foamed concrete insulation wall panel according to claim 1, characterized in that: The bamboo reinforcement has a square cross-section, a width of 1cm, and a length the same as the width of the foamed concrete wall panel. The bamboo reinforcement is spaced 200mm apart.

3. The prefabricated bamboo-based foamed concrete insulation wall panel according to claim 1, characterized in that: The vertical bamboo tubes have a diameter of 2cm and a length that is the same as the height of the foamed concrete wall panel, and are arranged at intervals of 150~200mm. The diameter of the vertical bamboo tube is 4-6cm, the vertical length is the same as the height of the foamed concrete wall panel, and the vertical bamboo tube is 5-10cm away from the outer edge of the foamed concrete wall panel. The diameter of the horizontal bamboo tube is 4-6 cm.

4. The prefabricated bamboo-based foamed concrete insulation wall panel according to claim 1, characterized in that: Both the bamboo strips and the bamboo tubes are subjected to high-temperature steam for corrosion prevention before use, and then coated with a 0.5~1mm epoxy resin anti-corrosion layer.

5. The prefabricated bamboo-based foamed concrete insulation wall panel according to claim 4, characterized in that: The foamed concrete wall panel has a width of 600mm, 1200mm, 1800mm or 2400mm and a thickness of 200mm. A 15-25mm protective layer is provided between the bamboo reinforcement and the outer edge of the foamed concrete wall panel.

6. The prefabricated bamboo-based foamed concrete insulation wall panel according to claim 1, characterized in that: The foamed concrete wall panel has a thickness of 200mm. A protrusion is provided at the center of one end of the foamed concrete wall panel, and a groove is provided at the center of the other end. The protrusion and the groove are adapted to each other. The protrusion height and the groove depth are both 10mm. The width of the protrusion and the groove are both 60mm. The cross-sectional shape of the protrusion and the groove are both trapezoidal with a slope of 40°.

7. The prefabricated bamboo-based foamed concrete insulation wall panel according to claim 1, characterized in that: The installation steps for the completed insulation wall panels are as follows: 1) Clean the ground until it is flat and smooth, lay 10mm mortar, thread the hoisting rope through the horizontal bamboo tube, lift the wall panel and place it in the predetermined position; 2) Apply foam adhesive to the gaps at the top of the wall panels and use horizontal bamboo tubes and vertical bamboo tubes to run electrical wires and network cables; 3) Fill the gaps in the horizontal bamboo tubes with foam adhesive, let it dry, and then decorate the wall to complete the installation.

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