Fabricated bamboo foamed concrete thermal insulation wallboard and production method thereof

Abstract

The invention discloses an assembly type bamboo foaming concrete heat preservation wallboard and a production method, and belongs to the technical field of assembly type constructions.The assembly type bamboo foaming concrete heat preservation wallboard comprises a foaming concrete wallboard body, bamboo ribs and bamboo tubes, and the multiple bamboo ribs are vertically arranged in two rows at intervals; the bamboo reinforcements are symmetrically arranged in the front wall and the rear wall of the foamed concrete wallboard, the bamboo tubes comprise vertical small bamboo tubes, vertical large bamboo tubes and horizontal bamboo tubes, the vertical small bamboo tubes are horizontally arranged in two rows at intervals, each row of vertical small bamboo tubes are arranged on the inner sides of the bamboo reinforcements, and the bamboo reinforcements are connected with the vertical small bamboo tubes in a binding mode; the vertical big bamboo tubes are arranged at the two ends of each row of vertical small bamboo tubes, the vertical big bamboo tubes are connected with the bamboo reinforcements in a binding mode, and the horizontal bamboo tubes are arranged at the four corners of the concrete wallboard respectively and bound together with the vertical big bamboo tubes. The bamboo wood is used for replacing steel bars to reinforce the concrete, the material cost is reduced, and the method has the advantages of environmental protection and economy; and non-directional bamboo fibers are uniformly added into the foamed concrete, so that the wallboard has tensile and anti-cracking properties and heat preservation and heat insulation capabilities.

Description

Technical Field

[0001] The invention relates to the technical field of assembled buildings, and in particular to an assembled bamboo foamed concrete thermal insulation wallboard and a production method thereof. Background Art

[0002] Prefabricated buildings are one of the important development directions of our country. They have been widely used in recent years and the total market value has steadily increased. In terms of concrete walls, prefabricated concrete wall panels have the advantages of short construction period, less labor demand, strong adaptability, energy saving and environmental protection, and extended building life compared to traditional cast-in-place concrete structures.

[0003] In the existing technology, steel bars are mostly used as the support of concrete walls. However, the production of steel bars will cause certain environmental pollution, and the cost is relatively high, the dead weight is relatively large, and the transportation cost is relatively high. Therefore, it is necessary to find an alternative material to solve this problem. At present, bamboo has gradually become a popular choice of building materials due to its rapid growth, high strength, light weight, and renewable characteristics. In recent years, studies have shown that bamboo can not only replace traditional wood in construction, but also be combined with concrete to form a new type of composite material to improve the overall performance of the building.

[0004] Based on the above content, an assembled bamboo foamed concrete insulation wall panel and a production method are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an assembled bamboo foamed concrete thermal insulation wallboard and a production method thereof, so as to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides an assembled bamboo foamed concrete insulation wall panel, comprising a foamed concrete wall panel and a plurality of bamboo tendons and a plurality of bamboo tubes arranged inside the foamed concrete wall panel, wherein the plurality of bamboo tendons are arranged vertically in two rows, the two rows of bamboo tendons 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 comprise a plurality of vertical small bamboo tubes, four vertical large bamboo tubes and four horizontal bamboo tubes, the plurality of vertical small bamboo tubes are arranged horizontally in two rows, the vertical small bamboo tubes in each row are arranged on the inner side of the bamboo tendons, and the bamboo tendons are tied and connected to the vertical small bamboo tubes; vertical large bamboo tubes are arranged at both ends of each row of vertical small bamboo tubes, the vertical large bamboo tubes are tied and connected to the bamboo tendons, the four horizontal bamboo tubes are respectively arranged at the four corners of the concrete wall panel, the horizontal bamboo tubes are tied together with the vertical large bamboo tubes and are located on the inner side of the vertical large bamboo tubes.

[0007] Preferably, the cross-sectional shape of the bamboo reinforcement is a square, the width of the bamboo reinforcement is 1 cm, the length is the same as the width of the foamed concrete wallboard, and the bamboo reinforcement is arranged at an interval of 200 mm.

[0008] Preferably, the diameter of the vertical small bamboo tube is 2 cm, the length is the same as the height of the foamed concrete wallboard, and the arrangement interval is 150-200 mm; The diameter of the vertical large bamboo tube is 4-6 cm, the width is the same as the height of the foamed concrete wallboard, and the vertical large bamboo tube is 5-10 cm away from the outer edge of the foamed concrete wallboard; The diameter of the horizontal bamboo tube is 4-6 cm.

[0009] Preferably, the bamboo tendons and the bamboo tubes are both subjected to high-temperature steam anti-corrosion treatment before use, and then a 0.5-1 mm epoxy resin anti-corrosion layer is coated on the surface.

[0010] Preferably, the material of the foamed concrete wallboard is foamed concrete, and the density of the foamed concrete is less than 500kg / m 3 , compressive strength greater than 5MPa, thermal conductivity less than 0.12W / (m·K).

[0011] Preferably, non-oriented bamboo fibers are uniformly added to the foamed concrete, the length of the bamboo fibers is 15-30 mm, the fineness is not less than 10 dtex, the strength is not less than 1CN / dtex, and the amount of the bamboo fibers is 0.02-0.1% of the dry mass of the foamed concrete.

[0012] Preferably, the width of the foamed concrete wallboard is 600 mm, 1200 mm, 1800 mm or 2400 mm, and the thickness is 200 mm, and a protective layer of 15 to 25 mm is arranged between the bamboo reinforcement and the outer edge of the foamed concrete wallboard.

[0013] Preferably, the thickness of the foamed concrete wall panel is 200 mm, a protrusion is provided at the center position of one end of the foamed concrete wall panel, and a groove is provided at the center position of the other end, the protrusion is adapted to the groove, the protruding height of the protrusion and the recessed depth of the groove are both 10 mm, the width of the protrusion and the width of the groove are both 60 mm, and the cross-sectional shape of the protrusion and the groove are both trapezoidal with a slope of 40°.

[0014] The present invention also provides a method for producing the above-mentioned assembled bamboo foamed concrete thermal insulation wallboard, comprising the following steps: S1. Purchase bamboo fibers and bamboo tendons, small bamboo tubes, and large bamboo tubes of the required composite cross-section size, open up the internal bamboo nodes of the large bamboo tube, and cut bamboo tendons, vertical small bamboo tubes, vertical large bamboo tubes, and horizontal bamboo tubes according to the designed length, of which the horizontal bamboo tube is 2 cm longer than the designed length; S2, performing anti-corrosion treatment on the bamboo reinforcement, the vertical small bamboo tube, the vertical large bamboo tube and the horizontal bamboo tube, and binding and connecting the bamboo reinforcement, the vertical small bamboo tube and the vertical large bamboo tube according to the design requirements to form two bamboo meshes; S3, setting the wall casting template according to the flat form of the wall, applying a release agent on the inner wall of the template, placing a small bamboo board with the thickness of the protective layer on the bottom plate of the template, and placing the first bamboo mesh; then placing a horizontal bamboo tube, the bottom of the horizontal bamboo tube directly contacts the template, and tying and connecting the horizontal bamboo tube and the first bamboo mesh; S4, placing a second bamboo mesh and tying it to the horizontal bamboo tube to form a bamboo skeleton; S5, preparing foamed concrete according to the designed density and strength, adding bamboo fiber according to the proportion, pouring the foamed concrete into the mold for curing, and removing the mold after the compressive strength of the concrete reaches 50% of the strength standard value required by the design; S6. Cut off the part of the horizontal bamboo tube protruding from the wall, cure it to the designed strength, and complete the production of the thermal insulation wall panel.

[0015] Preferably, for the finished insulation wall panels, the installation steps are as follows: 1) Clean the ground and lay 10mm mortar. Pass the hoisting rope of the crane through the horizontal bamboo tube, lift the wall panel and place it in the predetermined position; 2) Place foam glue in the gaps on the top of the wall panels, and use horizontal bamboo tubes and vertical large bamboo tubes to run electrical wires, network cables and other cables; 3) Fill the gaps between the horizontal bamboo tubes with foam glue, and after drying, carry out wall decoration to complete the installation.

[0016] Therefore, the present invention relates to an assembled bamboo foamed concrete insulation wallboard and a production method, which uses bamboo to replace steel bars to reinforce concrete, can reduce material costs, and is low-carbon and environmentally friendly. At the same time, compared with steel bars, bamboo has excellent tensile properties and a low deadweight, which can reduce transportation costs and maintain sufficient structural strength and stability, and has environmental and economic advantages. Secondly, non-directional bamboo fibers are evenly added to the foamed concrete, giving the wall panels excellent tensile and crack resistance and thermal insulation capabilities; the bamboo tubes, bamboo reinforcements and foamed concrete work synergistically to make the wall panels lighter while ensuring quality.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 A partial cross-sectional view of a bamboo reinforcement according to an embodiment of the present invention; Figure 3 A cross-sectional view of the bottom structure of an embodiment of the present invention; Reference numerals: 1. Foamed concrete wall panel; 2. Bamboo reinforcement; 3. Vertical small bamboo tube; 4. Vertical large bamboo tube; 5. Horizontal bamboo tube; 6. Bump; 7. Groove. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0021] Example like Figure 1-Figure 3 As shown, the present invention provides an assembled bamboo foamed concrete insulation wall panel, comprising a foamed concrete wall panel 1 and a plurality of bamboo ribs 2 and a plurality of bamboo tubes arranged inside the foamed concrete wall panel 1. The material of the foamed concrete wall panel 1 is foamed concrete, which has the advantages of light weight, high strength, thermal insulation, etc. The density of the foamed concrete is less than 500kg / m 3 , compressive strength greater than 5MPa, thermal conductivity less than 0.12W / (m·K). Non-directional bamboo fibers are evenly added to the foamed concrete to enhance the durability of the wallboard and improve its tensile and crack resistance. The length of the bamboo fiber is 15~30mm, the fineness is not less than 10dtex, and the strength is not less than 1CN / dtex. The amount of bamboo fiber is 0.02~0.1% of the dry mass of the foamed concrete.

[0022] The width of the foamed concrete wall panel 1 is 600mm, 1200mm, 1800mm or 2400mm, and the thickness is 200mm. The thickness of the foamed concrete wall panel 1 is 200mm. A protrusion 6 is arranged at the center position of one end of the foamed concrete wall panel 1, and a groove 7 is arranged at the center position of the other end. The protrusion 6 is matched with the groove 7. The protruding height of the protrusion 6 and the recessed 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 the protrusion 6 and the groove 7 are both trapezoidal with a slope of 40°. This structure facilitates the installation and tight connection between the wall panels.

[0023] A plurality of bamboo bars 2 are arranged vertically in two rows, and the two rows of bamboo bars 2 are symmetrically arranged inside the front and rear walls of the foamed concrete wallboard 1 and close to the surface of the foamed concrete wallboard 1. The cross-sectional shape of the bamboo bars 2 is a square with a side length of 1 cm. The width of the bamboo bars 2 is 1 cm, and the length is the same as the width of the foamed concrete wallboard 1. The arrangement interval of the bamboo bars 2 is 200 mm. A protective layer of 15 to 25 mm is arranged between the bamboo bars 2 and the outer edge of the foamed concrete wallboard 1.

[0024] The bamboo tubes include a plurality of vertical small bamboo tubes 3, four vertical large bamboo tubes 4 and four horizontal bamboo tubes 5. The bamboo tubes are all made of natural bamboo. The bamboo tubes are treated with high-temperature steam or hot oil to evaporate the internal moisture, thereby reducing the risk of decay and insect pests. Then, waterproof and anti-corrosion coatings such as epoxy resin are coated on the surface of the bamboo tubes to block the penetration of moisture and reduce the risk of corrosion. The surface of the bamboo tubes must be polished to remove the bamboo green and enhance the bite force with the concrete. It can be considered to apply epoxy resin adhesive on the surface of the bamboo tubes to enhance the adhesion between the bamboo tubes and the concrete.

[0025] Multiple vertical small bamboo tubes 3 are arranged horizontally in two rows, the diameter of the vertical small bamboo tubes 3 is 2 cm, the length is the same as the height of the foamed concrete wallboard 1, and the arrangement interval is 150-200 mm; each row of vertical small bamboo tubes 3 is arranged on the inner side of the bamboo reinforcement 2, and the bamboo reinforcement 2 is tied and connected with the vertical small bamboo tubes 3; two vertical large bamboo tubes 4 are arranged at both ends of each row of vertical small bamboo tubes 3, the diameter of the vertical large bamboo tubes 4 is 4-6 cm, the width is the same as the height of the foamed concrete wallboard 1, and the vertical large bamboo tubes 4 are 5-10 cm away from the outer edge of the foamed concrete wallboard 1; the vertical large bamboo tubes 4 are tied and connected with the bamboo reinforcement 2. The diameter of the horizontal bamboo tubes 5 is 4-6 cm, and the four horizontal bamboo tubes 5 are respectively arranged at the four corners of the concrete wallboard, and the horizontal bamboo tubes 5 are tied together with the vertical large bamboo tubes 4 and are located on the inner side of the vertical large bamboo tubes 4.

[0026] The bamboo tendons 2 and the bamboo tubes are treated with high-temperature steam for corrosion protection before use, and then coated with a 0.5-1 mm epoxy resin corrosion protection layer on the surface.

[0027] The present invention also provides a method for producing the above-mentioned assembled bamboo foamed concrete thermal insulation wallboard, comprising the following steps: S1. Purchase bamboo fibers and bamboo tendons 2, small bamboo tubes, and large bamboo tubes of the required composite cross-section size, open the internal bamboo nodes of the large bamboo tubes, and cut bamboo tendons 2, vertical small bamboo tubes 3, vertical large bamboo tubes 4, and horizontal bamboo tubes 5 according to the designed length, wherein the horizontal bamboo tubes 5 are 2 cm longer than the designed length; S2, the bamboo reinforcement 2, the vertical small bamboo tube 3, the vertical large bamboo tube 4 and the horizontal bamboo tube 5 are subjected to antiseptic treatment, and the bamboo reinforcement 2, the vertical small bamboo tube 3 and the vertical large bamboo tube 4 are tied and connected according to the design requirements to form two bamboo meshes; S3, set the wall casting template according to the flat form of the wall, apply a release agent on 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 a horizontal bamboo tube 5, the bottom of the horizontal bamboo tube 5 directly contacts the template, and tie the horizontal bamboo tube 5 to the first bamboo mesh; S4, placing a second bamboo mesh and tying it to the horizontal bamboo tube 5 to form a bamboo skeleton; S5, preparing foamed concrete according to the designed density and strength, adding bamboo fiber according to the proportion, pouring the foamed concrete into the mold for curing, and removing the mold after the compressive strength of the concrete reaches 50% of the strength standard value required by the design; S6. Cut off the 2 cm portion of the horizontal bamboo tube 5 protruding from the wall, and cure it to the designed strength to complete the production of the thermal insulation wall panel.

[0028] For the finished insulation wall panels, the installation steps are as follows: 1) Clean the ground and lay 10mm mortar, pass the hoisting rope of the crane through the horizontal bamboo tube 5, lift the wall panel and place it in the predetermined position; 2) Put foam glue in the gap on the top surface of the wall panel, and use the horizontal bamboo tube 5 and the vertical large bamboo tube 4 to run the electrical wires, network cables and other cables; 3) Fill the gaps between the horizontal bamboo tubes 5 with foam glue, and after drying, perform wall decoration to complete the installation.

[0029] Therefore, the present invention provides an assembled bamboo foamed concrete insulation wall panel and a production method, which uses bamboo instead of steel bars to reinforce concrete, reduces material costs, and has environmental and economic advantages; and non-directional bamboo fibers are evenly added to the foamed concrete, so that the wall panel has excellent tensile and crack resistance and thermal insulation capabilities.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An assembled bamboo foamed concrete thermal insulation wallboard, characterized in that: It comprises a foamed concrete wall panel and a plurality of bamboo bars and a plurality of bamboo tubes arranged inside the foamed concrete wall panel, wherein the plurality of bamboo bars are arranged vertically in two rows, the two rows of bamboo bars 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 comprise a plurality of vertical small bamboo tubes, four vertical large bamboo tubes and four horizontal bamboo tubes, the plurality of vertical small bamboo tubes are arranged horizontally in two rows, the vertical small bamboo tubes in each row are arranged on the inner side of the bamboo bars, the bamboo bars are bound and connected to the vertical small bamboo tubes; vertical large bamboo tubes are arranged at both ends of each row of vertical small bamboo tubes, the vertical large bamboo tubes are bound and connected to the bamboo bars, the four horizontal bamboo tubes are respectively arranged at the four corners of the concrete wall panel, the horizontal bamboo tubes are bound together with the vertical large bamboo tubes and are located on the inner side of the vertical large bamboo tubes.

2. The assembled bamboo foamed concrete thermal insulation wallboard according to claim 1, characterized in that: The cross-sectional shape of the bamboo reinforcement is a square, the width of the bamboo reinforcement is 1 cm, the length is the same as the width of the foamed concrete wallboard, and the bamboo reinforcement is arranged at an interval of 200 mm.

3. The assembled bamboo foamed concrete thermal insulation wallboard according to claim 1, characterized in that: The diameter of the vertical small bamboo tube is 2 cm, the length is the same as the height of the foamed concrete wallboard, and the arrangement interval is 150-200 mm; The diameter of the vertical large bamboo tube is 4-6 cm, the width is the same as the height of the foamed concrete wallboard, and the vertical large bamboo tube is 5-10 cm away from the outer edge of the foamed concrete wallboard; The diameter of the horizontal bamboo tube is 4-6 cm.

4. The assembled bamboo foamed concrete thermal insulation wallboard according to claim 1, characterized in that: The bamboo tendons and the bamboo tubes are both subjected to high-temperature steam anti-corrosion treatment before use, and then a 0.5-1 mm epoxy resin anti-corrosion layer is coated on the surface.

5. The assembled bamboo foamed concrete thermal insulation wallboard according to claim 1, characterized in that: The material of the foamed concrete wallboard is foamed concrete, and the density of the foamed concrete is less than 500kg / m 3 , compressive strength greater than 5MPa, thermal conductivity less than 0.12W / (m·K).

6. The assembled bamboo foamed concrete thermal insulation wallboard according to claim 5, characterized in that: The foamed concrete is uniformly added with non-oriented bamboo fibers, the length of the bamboo fibers is 15-30 mm, the fineness is not less than 10 dtex, the strength is not less than 1 CN / dtex, and the addition amount of the bamboo fibers is 0.02-0.1% of the dry mass of the foamed concrete.

7. The assembled bamboo foamed concrete thermal insulation wallboard according to claim 6, characterized in that: The width of the foamed concrete wallboard is 600 mm, 1200 mm, 1800 mm or 2400 mm, and the thickness is 200 mm. A protective layer of 15 to 25 mm is arranged between the bamboo reinforcement and the outer edge of the foamed concrete wallboard.

8. The assembled bamboo foamed concrete thermal insulation wallboard according to claim 1, characterized in that: The thickness of the foamed concrete wall panel is 200 mm. A protrusion is provided at the center position of one end of the foamed concrete wall panel, and a groove is provided at the center position of the other end. The protrusion is matched with the groove. The protruding height of the protrusion and the recessed depth of the groove are both 10 mm. The width of the protrusion and the width of the groove are both 60 mm. The cross-sectional shapes of the protrusion and the groove are both trapezoidal, with a slope of 40°.

9. A method for producing an assembled bamboo foamed concrete thermal insulation wallboard according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Purchase bamboo fibers and bamboo tendons, small bamboo tubes, and large bamboo tubes of the required composite cross-section size, open up the internal bamboo nodes of the large bamboo tube, and cut bamboo tendons, vertical small bamboo tubes, vertical large bamboo tubes, and horizontal bamboo tubes according to the designed length, of which the horizontal bamboo tube is 2 cm longer than the designed length; S2, performing anti-corrosion treatment on the bamboo reinforcement, the vertical small bamboo tube, the vertical large bamboo tube and the horizontal bamboo tube, and binding and connecting the bamboo reinforcement, the vertical small bamboo tube and the vertical large bamboo tube according to the design requirements to form two bamboo meshes; S3, setting the wall casting template according to the flat form of the wall, applying a release agent on the inner wall of the template, placing a small bamboo board with the thickness of the protective layer on the bottom plate of the template, and placing the first bamboo mesh; then placing a horizontal bamboo tube, the bottom of the horizontal bamboo tube directly contacts the template, and tying and connecting the horizontal bamboo tube and the first bamboo mesh; S4, placing a second bamboo mesh and tying it to the horizontal bamboo tube to form a bamboo skeleton; S5, preparing foamed concrete according to the designed density and strength, adding bamboo fiber according to the proportion, pouring the foamed concrete into the mold for curing, and removing the mold after the compressive strength of the concrete reaches 50% of the strength standard value required by the design; S6. Cut off the part of the horizontal bamboo tube protruding from the wall, cure it to the designed strength, and complete the production of the thermal insulation wall panel.

10. The method for producing an assembled bamboo foamed concrete thermal insulation wallboard according to claim 9, characterized in that: For the finished insulation wall panels, the installation steps are as follows: 1) Clean the ground and lay 10mm mortar. Pass the hoisting rope of the crane through the horizontal bamboo tube, lift the wall panel and place it in the predetermined position; 2) Place foam glue in the gaps on the top of the wall panels, and use horizontal bamboo tubes and vertical large bamboo tubes to run electrical wires, network cables and other cables; 3) Fill the gaps between the horizontal bamboo tubes with foam glue, and after drying, carry out wall decoration to complete the installation.

Images