CN112277117B - Permanent bamboo-based composite bearing plate and processing technology - Google Patents
Permanent bamboo-based composite bearing plate and processing technology Download PDFInfo
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- CN112277117B CN112277117B CN202011177964.5A CN202011177964A CN112277117B CN 112277117 B CN112277117 B CN 112277117B CN 202011177964 A CN202011177964 A CN 202011177964A CN 112277117 B CN112277117 B CN 112277117B
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- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention relates to a permanent bamboo-based composite bearing plate which comprises assembled bamboo strips, fiber gridding cloth and a cementing material, wherein the assembled bamboo strips are formed by cutting bamboo materials along the longitudinal direction, the bamboo strips are vertically placed during assembly, and first gaps are formed between the adjacent bamboo strips at intervals; the fiber mesh cloth is attached to the upper surface and the lower surface of the assembled bamboo batten and completely wraps the side surfaces and the end surfaces of the assembled bamboo batten from the periphery; cementing materials are poured in the first gaps, the upper surface, the lower surface and the peripheral side surfaces of the outer side of the fiber gridding cloth, the cementing materials in the first gaps form thin-wall connecting supporting ribs, and the cementing materials on the upper surface, the lower surface and the peripheral side surfaces of the outer side of the fiber gridding cloth form bearing protective bonding layers. The permanent bamboo-based composite bearing plate provided by the invention has the advantages of taking the bearing strength into consideration, realizing energy conservation, environmental protection, safety and low consumption, and simultaneously having good high temperature resistance, low temperature resistance, wear resistance, corrosion resistance, permeability resistance and fire resistance.
Description
Technical Field
The invention relates to the technical field of building boards, in particular to a green building environment-friendly composite board, and specifically relates to a permanent bamboo-based composite bearing board and a processing technology thereof.
Background
With the development of economic technology and the improvement of the living standard of people, the quality requirements of people on building products and building materials are higher and higher, and meanwhile, the use of green building materials is vigorously promoted in order to save non-renewable resources, improve the living environment quality of people and reduce environmental pollution. The green building material is produced by adopting a clean production technology and using industrial or urban solid wastes, has the performances of demagnetization, noise elimination, dimming, temperature regulation, heat insulation, fire prevention, static resistance and the like, and has a special novel functional building material for regulating the functions of a human body. The raw materials used in the production use as little as possible natural resources, and a large amount of tailings, garbage, waste liquid and other wastes; a low-energy-consumption manufacturing process and a production technology without environmental pollution are adopted; in the process of product preparation or production, formaldehyde, halide solvent or aromatic hydrocarbon is not used, and the product does not contain pigments and additives of mercury and compounds thereof; the product is designed with the purposes of improving the production environment and improving the quality of life, namely, the product does not damage the human health, but is beneficial to the human health, and has multiple functions, such as antibiosis, sterilization, mildew prevention, deodorization, heat insulation, flame retardance, temperature regulation, humidity regulation, demagnetization, ray prevention, static resistance and the like; the product can be recycled and reused, and has no waste polluting the environment. Therefore, the research and development of a novel green building material which is safe, applicable, economical and practical and easy to popularize and use has important significance.
At present, the wallboard used in domestic assembly type buildings is mostly a cement fiberboard and a gypsum board, and the main material is a non-green environment-friendly product. And the plates have poor crack resistance, the field splicing joints are more due to the difficulty in large plate construction due to poor rigidity and strength, and the leakage phenomenon is common in the use process.
Bamboo belongs to a very abundant green material of resource in china, however uses in the building engineering less at present, and the municipal piping lane field that breaks through at present adopts thermosetting resin to make the bamboo of adhesive to twine the composite technology, but this kind of technology is difficult to use in industry and people's building project especially building wallboard, floor, and bamboo winding technology is suitable for the preparation pipeline, but to the building wallboard that is thinner, uses the comparison difficulty. And the cost is higher, the process is more complicated, the field connection construction is more difficult, and the wallboard has no comprehensive advantages compared with the traditional wallboard. Especially for load-bearing walls, the building consumption is large, and no proper processing technology and structure exist when the existing bamboo-based board is used for building structural boards.
Although related patent documents of bamboo-based plates exist in the prior art, the corrosion prevention problem of the plates in the use process is not fully considered, and the requirements of compression resistance, tensile resistance, bending resistance and coordinated deformation of the plates are not considered, so that the bamboo-based plates are mostly used for light, thin-wall or non-bearing structural plates, the requirements of strength, bearing capacity and deformation of the plates are not considered, and the bamboo-based plates cannot be widely used in building structures, particularly bearing structures. Therefore, there is a need for bamboo-based panels that can be widely used in building structural panels, especially load-bearing structural panels, to meet the current social and economic requirements for energy conservation and environmental protection of building structures.
Disclosure of Invention
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention, and it is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
In view of the defects of the prior art, the invention aims to fully utilize the advantages of bamboo wood, improve a bamboo-based plate and provide a permanent bamboo-based composite bearing plate, so that the bearing strength can be considered, energy conservation, environmental protection, safety and low consumption can be realized, and the bearing plate has good high temperature resistance, low temperature resistance, wear resistance, corrosion resistance, impermeability and fire resistance.
In order to realize the purpose, the technical scheme of the invention is as follows:
the application firstly provides a permanent bamboo-based composite bearing plate, which comprises: assembly bamboo strips, fiber mesh cloth and a cementing material, wherein,
the assembled bamboo strips are formed by cutting bamboo materials along the longitudinal direction, the bamboo strips are vertically placed during assembly, the adjacent bamboo strips are arranged in a staggered mode, first gaps are formed between the adjacent bamboo strips at intervals, the cutting width of the bamboo materials is the height of the bamboo strips, and the wall thickness of the bamboo materials is the width of the bamboo strips;
the fiber gridding cloth is attached to the upper surface and the lower surface of the assembled bamboo strip, and completely wraps the side surfaces and the end surfaces of the assembled bamboo strip from the periphery;
the cementing materials are poured in the first gaps, the upper surface, the lower surface and the peripheral side surfaces of the outer sides of the fiber gridding cloth, the cementing materials in the first gaps form thin-wall connecting supporting ribs, and the cementing materials on the upper surface, the lower surface and the peripheral side surfaces of the outer sides of the fiber gridding cloth form bearing protective bonding layers.
As an improvement, the inner side of the fiber mesh cloth is separated from the side surface and the end surface of the assembled bamboo strip to form a second gap, and a cementing material is poured in the second gap to form a bearing protective bonding layer.
As an improvement, the cutting width of the bamboo wood is 5-40mm, and the first gap between adjacent bamboo battens is 2-5 mm; preferably, the length of the bamboo strips is 500-2000mm, and the longitudinal splicing and sewing distance between adjacent bamboo strips is 100-1000 mm.
As an improvement, the main material of the cementing material is a fiber-reinforced cement-based material, preferably fiber-reinforced magnesite cement containing a stabilizer, namely, the magnesite cement is added with the stabilizer and reinforcing fibers, or the cementing material is added with a filler, preferably sawdust and ceramsite.
As an improvement, the assembled bamboo strips are in a unidirectional single-layer assembly, and adjacent bamboo strips are vertically arranged in parallel at intervals.
As an improvement, the assembled bamboo strips are in a bidirectional multilayer assembled assembly, the upper layer bamboo strips and the lower layer bamboo strips are vertically superposed, the lower layer bamboo strips are vertically placed at intervals in parallel along the transverse direction, and the upper layer bamboo strips are vertically placed at intervals in parallel along the longitudinal direction;
preferably, a third gap is arranged between the upper layer of bamboo strip and the lower layer of bamboo strip, and a cementing material is poured in the third gap and forms a bearing protective bonding layer;
preferably, a fiber mesh cloth is arranged in the third gap, and a cementing material is poured between the fiber mesh cloth and the upper and lower layer assembly bamboo battens.
The application also provides a processing technology of the permanent bamboo-based composite bearing plate, which comprises the following steps:
cutting the bamboo wood, cutting the bamboo wood along the longitudinal direction to form bamboo strips, and controlling the cutting width of the bamboo wood to be uniform during cutting to form a plurality of bamboo strips with the same height;
assembling bamboo strips, namely assembling a plurality of cut bamboo strips in an assembling mould, and controlling gaps with the same interval between adjacent bamboo strips during assembling;
attaching fiber gridding cloth, covering the fiber gridding cloth on the upper surface, the lower surface and the peripheral side surfaces of the bamboo strips after the bamboo strip assembly is finished, and temporarily fixing the fiber gridding cloth;
pouring a cementing material, wherein the cementing material is poured after the assembled bamboo strips are attached and the fiber gridding cloth is temporarily fixed, and the cementing material is fully poured into all gaps to fully wrap the bamboo strips;
curing and hardening, and forming the permanent bamboo-based composite bearing plate by the cooperative work of the bamboo strips, the fiber gridding cloth and the cementing material.
The application also provides a processing technology of the permanent bamboo-based composite bearing plate, which comprises the following steps:
cutting the bamboo wood, cutting the bamboo wood along the longitudinal direction to form bamboo strips, and controlling the cutting width of the bamboo wood to be uniform during cutting to form a plurality of bamboo strips with the same height;
assembling the bamboo strips, namely assembling a plurality of cut bamboo strips in an assembling mould, and controlling gaps with the same interval between adjacent bamboo strips during assembling;
pouring a cementing material, pouring the cementing material into the gaps of the bamboo strips and the upper surface, the lower surface and the peripheral side surfaces of the assembled bamboo strips, wherein the cementing material is fully poured into all the gaps to fully wrap the bamboo strips;
pressing fiber gridding cloth in, after pouring a cementing material into the assembled bamboo strips, attaching the fiber gridding cloth to the upper surface, the lower surface and the peripheral side surfaces of the assembled bamboo strips, pressing the fiber gridding cloth into the cementing material, and adhering and fixing the fiber gridding cloth with the cementing material;
curing and hardening, and forming the permanent bamboo-based composite bearing plate by the cooperative work of the bamboo strips, the fiber mesh cloth and the cementing material.
The application provides a cavity structure board again, including upper and lower panel, curb plate and interior baffle, upper and lower panel and curb plate enclose to close and form the cavity structure, the interior baffle is connected with upper and lower panel, separates the cavity structure and forms a plurality of inner chambers, upper and lower panel, curb plate and interior baffle adopt aforementioned permanent bamboo base composite bearing board integral casting to form.
As an improvement, the inner cavity of the cavity structure plate is filled with light heat-insulating materials or concrete, the light heat-insulating materials are preferably foam concrete, rock wool and extruded plates, and the filling materials can be used for heat preservation, heat insulation and sound insulation and also serve as an inner mold for casting the cavity structure plate and are integrally cast and molded in a factory.
Compared with the prior art, the invention has the beneficial effects that: the permanent bamboo-based composite bearing plate has the advantages of energy conservation, low consumption, safety in use, no toxicity, no odor, low price, small surface density, high temperature resistance, low temperature resistance, wear resistance, corrosion resistance, permeability resistance, good fire resistance and the like, is an ideal environment-friendly building material, and can be widely applied to the field of buildings or other fields. Specifically, the present invention has at least the following practical effects:
(1) the bamboo strips are used as base materials, so that the strength is high, steel is saved, the energy is saved, the consumption is low, the use is safe, no toxicity or odor is caused, the price is low, and the environment is protected.
(2) The fiber mesh cloth can enhance the bonding effect of the bamboo strips and the cementing material, and prevents the cementing material from cracking in the hardening and using processes together with the bamboo strips.
(3) The fiber mesh cloth can preliminarily play a role in protecting and preventing the bamboo wood.
(4) The cementing material and the bamboo splints have synergistic effect, the member has no warping deformation and good crack resistance.
(5) The cementing material is poured to form the thin-wall connecting support rib and the bearing protection bonding layer, so that good compression resistance, tensile resistance, shear resistance and connecting and protecting functions can be provided, and the bearing strength of the plate is enhanced.
(6) The cementing material, the bamboo strips and the fiber mesh fabric work cooperatively, deformation coordination does not occur, the strength of the member is high, the deformation capacity is good, the anti-seismic ductility is good, and the plate has the advantages of two materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, shall fall within the scope covered by the technical contents disclosed in the present invention.
FIG. 1 is a cross-sectional view of one embodiment of a permanent bamboo-based composite bearing plate;
FIG. 2 is a longitudinal sectional view of one embodiment of a permanent bamboo based composite load bearing plate;
FIG. 3 is a schematic view of bamboo material cut;
FIG. 4 is a cross-sectional view of one embodiment of a permanent bamboo based composite carrier board (cementitious material not shown);
FIG. 5 is a cross-sectional view of another embodiment of a permanent bamboo-based composite load-bearing board (cementitious material not shown);
FIG. 6 is a cross-sectional view of another embodiment of a permanent bamboo-based composite load bearing board;
FIG. 7 is a longitudinal sectional view of another embodiment of a permanent bamboo based composite load bearing plate;
FIG. 8 is a plan view of one embodiment of a permanent bamboo-based composite load bearing board;
FIG. 9 is a cross-sectional view of a permanent bamboo-based composite bearing plate according to yet another embodiment;
FIG. 10 is a longitudinal sectional view of a permanent bamboo based composite load bearing panel according to yet another embodiment;
FIG. 11 is a cross-sectional view of a permanent bamboo-based composite bearing plate according to still another embodiment;
FIG. 12 is a plan view of a permanent bamboo-based composite bearing board according to yet another embodiment;
FIG. 13 is a cross-sectional view of one embodiment of a cavity structured plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It is to be understood that the terms "comprises/comprising," "consisting of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, refer to orientations or positional relationships that are based on the orientation or positional relationship shown in the figures, and are used merely to facilitate description and to simplify description, rather than to indicate or imply that the device, component, or structure referred to must have a particular orientation, be constructed or operated in a particular orientation, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solution of the present invention is specifically explained below with reference to the accompanying drawings.
The bamboo is tall and big, the grass plant growing rapidly, the stem is many wooden types, the adaptability is strong, distribute very wide; compared with steel, the bamboo has light weight, high hardness, tensile strength of 170MPa along the grain and compressive strength of 80MPa along the grain; in particular, the grain tensile strength of the steel and bamboo reaches 280MPa at most, which is almost half of that of steel with the same section size. Although the tensile strength of steel is 2.5 to 3 times that of general bamboo, the tensile strength of bamboo is 2 to 3 times stronger than that of steel when the tensile strength is calculated by unit weight. The specification bamboo strips are processed by natural bamboos with the age of not less than 2 years, and the bamboo is mainly selected from phyllostachys pubescens with larger diameter; the mechanical property of the material can be used by batch detection according with the mechanical requirement.
Based on the technical scheme, the permanent bamboo-based composite bearing plate is designed by adopting the bamboo strips as the main material of the plate so as to fully utilize the advantages of bamboo in the aspects of strength and environmental protection.
Referring to fig. 1 and 2, the permanent bamboo-based composite bearing plate of the present invention includes: the bamboo batten assembly comprises assembly bamboo battens 1, fiber mesh cloth 2 and a cementing material 3.
As shown in fig. 3, fig. 3 is a schematic view of bamboo section cutting, a suitable natural bamboo 100 is prepared, the assembled bamboo strips 1 are formed by longitudinally cutting the bamboo 100, when in use, the bamboo 100 is longitudinally cut, each bamboo is cut to form a plurality of bamboo strips 1, and the cutting width of the bamboo is controlled to be uniform during cutting.
As shown in fig. 4, fig. 4 is a cross-sectional view (without showing a gel material) of the permanent bamboo-based composite bearing plate according to an embodiment, when the bearing plate is assembled, the bamboo splints 1 are vertically placed, the adjacent bamboo splints are arranged in a staggered manner, first gaps 4 are formed between the adjacent bamboo splints at intervals, the cutting width is used as the height of the assembly of the bamboo splints 1, the wall thickness of the bamboo is used as the width of the bamboo splints 1, the cutting width of the bamboo is uniform, the height of the bamboo splints in the thickness direction of the plate can be guaranteed to be consistent, and the flatness of the plane of the assembly of the bamboo splints can be guaranteed.
In the invention, the height of the bamboo strip assembly is controlled to be 5-40mm, and the reserved first gap of the bamboo strip is controlled to be 2-5 mm.
As shown in FIG. 8, the length of the bamboo strips is 500-2000mm, and the longitudinal splicing gap between adjacent bamboo strips is preferably 100-1000 mm, so that the bearing strength of the bamboo strips can be ensured, and the feasibility of the processing technology can be considered.
Continuing to refer to fig. 1 and 2, the fiber gridding cloth 2 is attached to the upper surface and the lower surface of the assembled bamboo strip 1, and completely wraps the side surfaces and the end surfaces of the assembled bamboo strip from the periphery; the fiber mesh cloth can preliminarily play a role in protecting and preventing the bamboo wood.
The cementing materials 3 are poured in the first gaps 4, the upper surface, the lower surface and the peripheral side surfaces of the outer side of the fiber gridding cloth 2 are formed, the cementing materials 3 in the first gaps 4 form thin-wall connecting supporting ribs 5, and the cementing materials on the upper surface, the lower surface and the peripheral side surfaces of the outer side of the fiber gridding cloth form a bearing protective bonding layer 6. The thin-wall connecting support ribs 5 are embodied as support column structures in the cross section shown in fig. 1, and are embodied as support walls, or support rib plates, in the longitudinal section and the plan view, and mainly play a role in supporting and reinforcing, specifically, the role is related to the function of a member composed of plates, when the plates are used, the plates mainly form a cavity wall plate, a floor slab or serve as a structural template, when the plates are used as a shear wall and a partition wall, the thin-wall connecting support ribs 5 mainly play a role in resisting compression and shear, and when the plates are used as the floor slab, the thin-wall connecting support ribs 5 mainly play a role in resisting tension and compression. The bearing protection bonding layer 6 can provide the same function as the thin-wall connection supporting rib 5, and can also play a role of a protection layer for the bamboo strips and the fiber mesh cloth to prevent the bamboo strips from being corroded prematurely and the fiber mesh cloth from being corroded prematurely. In addition, thin wall connection support rib 5 still plays the connection effect, is about to fibre net check 2 and bamboo strip 1 zonulae occludens together, bears protection adhesive linkage 6 and still plays the adhesive effect, is about to fibre net check 2 zonulae occludens as a whole, forms compound loading board wholly.
Referring to fig. 5-7, which are cross-sectional views of a permanent bamboo-based composite bearing plate according to another embodiment, in the present embodiment, the side and end surfaces of the assembled bamboo strips are specially treated, that is, the fiber mesh cloth 2 at the position is not directly attached to the bamboo strips 1, but the inner side of the fiber mesh cloth 2 is separated from the side and end surfaces of the assembled bamboo strips to form a second gap 7, and a binding material 3 is poured into the second gap to form a bearing protective adhesive layer 6. The bearing protective bonding layer is also formed on the side surface and the end surface of the board, so that the bearing strength of the board at the edge is enhanced, and the board is prevented from being prematurely leaked due to local premature failure caused by compression and bending.
In the invention, the fiber gridding cloth 2 is selected from glass fiber gridding cloth or basalt fiber gridding cloth.
In the invention, the main material of the cementing material 3 is a fiber-reinforced cement-based material, such as fiber-reinforced magnesite cement containing a stabilizer, i.e. the magnesite cement is added with the stabilizer and reinforcing fibers, or the cementing material is added with fillers, such as sawdust and ceramsite. The fiber-reinforced magnesite cement containing the stabilizer has good strength, and the compressive strength is 50-80 MPa; the alkaline cement has alkalescence which is much lower than that of portland cement, so that the corrosion to bamboo wood can be avoided; the adhesion is good, and the adhesion force with the bamboo strips is strong; the wear resistance is good and is 3 times of that of common portland cement; the fireproof flame-retardant material has the advantages of good fireproof flame-retardant performance, high temperature resistance, excellent low-temperature resistance, strong environmental adaptability and particular suitability for areas with large temperature difference change.
In the invention, the bamboo strips can be assembled in a unidirectional mode or a bidirectional mode. Referring to fig. 1, as one embodiment of the present invention, the assembled bamboo strands 1 are in a unidirectional single layer assembly with adjacent strands standing in parallel spaced apart relationship. When the unidirectional single-layer assembly is carried out, the thickness of the plate is small, and the compression strength and the bending strength of the structure are moderate.
When the panel is used as a structural load bearing member, the bamboo strands are preferably assembled in two-way, e.g., two-way, two-layer or more layers. Referring to fig. 9, 10 and 12, the assembled bamboo strips 1 are formed into a multi-layer bidirectional assembly, the upper layer bamboo strips and the lower layer bamboo strips are vertically stacked, the lower layer bamboo strips are horizontally and parallelly spaced and vertically placed, and the upper layer bamboo strips are vertically and parallelly spaced and vertically placed. The bidirectional multilayer assembly can greatly improve the compression strength and the bending strength of the board, and meanwhile, the bamboo splints in the upper direction and the lower direction are arranged in a staggered manner, so that the strength and the toughness are complementary, and the board can provide better bearing performance in two directions.
Furthermore, when the bidirectional multilayer assembly is carried out, a third gap 8 is also formed between the upper layer of bamboo strip 1 and the lower layer of bamboo strip 1, and the cementing material 3 is poured in the third gap 8. The binding material in the third gap 8 forms a bearing protection bonding layer 6 between the upper layer assembly bamboo batten and the lower layer assembly bamboo batten, the bearing protection bonding layer clamped between the upper layer assembly bamboo batten and the lower layer assembly bamboo batten can enhance the bonding force between the upper layer assembly bamboo batten and the lower layer assembly bamboo batten, the integrity between layers is improved, and therefore the integral bearing strength and the rigidity of the whole bidirectional plate are enhanced.
Referring to fig. 11, as a specific improvement, when a bidirectional multilayer assembly is performed, a fiber mesh cloth 2 is further added in a third gap 8 between an upper layer of bamboo batten and a lower layer of bamboo batten 1, a cementing material 3 is poured into the gap, and the fiber mesh cloth between the two layers of bamboo battens and the cementing material form a whole, so that the overall strength of the multilayer plate can be further enhanced, the bonding force between the two layers of plates can be enhanced, and interlayer slippage can be prevented when a force is applied.
Through the detailed explanation, the permanent bamboo-based composite bearing plate provided by the invention has the advantages that the bamboo strips are used as the base material, the strength is high, the steel is saved, the energy and the consumption are saved, the use is safe, the non-toxic and tasteless effects are realized, the price is low, and the environment is protected. The fiber mesh cloth can enhance the bonding effect of the bamboo strips and the cementing material, and prevents the cementing material from cracking in the hardening and using processes together with the bamboo strips. The fiber mesh cloth and the bamboo strips have synergistic effect, so that good tensile and crack resistance can be provided, the bamboo strips and the cementing material have synergistic effect, the component has no warping deformation and good crack resistance, and particularly, the thin-wall connecting support ribs 5 and the bearing protection bonding layer 6 are combined, so that good compressive, tensile and shear bearing capacity can be provided. The cementing material, the bamboo strips and the fiber mesh fabric work cooperatively, deformation coordination does not occur, the strength of the member is high, the deformation capacity is good, the anti-seismic ductility is good, and the plate has the advantages of two materials.
The permanent bamboo-based composite bearing plate provided by the invention has the advantages of high strength, small surface density, high temperature resistance, low temperature resistance, wear resistance, corrosion resistance, permeability resistance, good fire resistance and the like, is an ideal environment-friendly building material, and can be widely applied to the field of buildings or other fields.
The invention further provides a processing technology of the permanent bamboo-based composite bearing plate, which comprises the following steps:
s10, cutting the bamboo wood 100 along the longitudinal direction to form bamboo battens 1, and controlling the cutting width of the bamboo wood to be uniform during cutting to form a plurality of bamboo battens with the same height, as shown in figure 3 specifically;
the bamboo strips can be mechanically ground to be rough in the process of cutting the bamboo wood so as to enhance the binding power between the bamboo wood and the binding material.
S20, assembling the bamboo strips 1, assembling a plurality of cut bamboo strips in an assembling mould, and controlling gaps with the same interval between adjacent bamboo strips during assembling;
s30, attaching the fiber mesh cloth 2, covering the fiber mesh cloth on the upper surface, the lower surface and the peripheral side surfaces of the bamboo battens after the bamboo batten assembly is finished, and temporarily fixing the fiber mesh cloth;
the bamboo batten side face needs to be spaced from the fiber grid cloth by a certain gap, the adhesive layer is temporarily adhered to the bamboo batten or the fiber grid cloth, the adhesive layer is temporarily adhered between the upper layer bamboo batten and the lower layer bamboo batten for the bidirectional multilayer assembly structure, and the adhering thickness of the adhesive layer can be flexibly controlled to meet the design requirement by adjusting the gap distance.
S40, pouring a cementing material 3, pouring the cementing material after the assembly bamboo strips are attached and the fiber mesh cloth is temporarily fixed, wherein the cementing material is fully poured into all gaps to fully wrap the bamboo strips;
and S50, curing and hardening, and forming the permanent bamboo-based composite bearing plate through the cooperative work of the bamboo strips, the fiber gridding cloth and the cementing material.
The invention discloses a processing technology of a permanent bamboo-based composite bearing plate, which is different from the processing technology of the permanent bamboo-based composite bearing plate, and the processing technology comprises the following steps of firstly pouring a cementing material and then constructing fiber gridding cloth after finishing the assembly of bamboo strips:
s10, cutting the bamboo wood along the longitudinal direction to form bamboo strips, and controlling the cutting width of the bamboo wood to be uniform during cutting to form a plurality of bamboo strips with consistent height;
s20, assembling the bamboo strips, namely assembling a plurality of cut bamboo strips in an assembling mould, and controlling gaps with the same interval between adjacent bamboo strips during assembling;
s30, pouring a cementing material, pouring the cementing material into gaps of the bamboo strips and into the upper surface, the lower surface and the peripheral side surfaces of the assembled bamboo strips, wherein the cementing material is fully poured into all the gaps to fully wrap the bamboo strips;
s40, pressing fiber mesh cloth in, after pouring a cementing material into the assembled bamboo strips, attaching the fiber mesh cloth to the upper surface, the lower surface and the peripheral side surfaces of the assembled bamboo strips, pressing the fiber mesh cloth into the cementing material, and adhering and fixing the fiber mesh cloth and the cementing material;
and S50, curing and hardening, and allowing the bamboo strips, the fiber mesh cloth and the cementing material to work cooperatively to form the permanent bamboo-based composite bearing plate.
According to the processing technology of the permanent bamboo-based composite bearing plate, the components are produced in batches in a factory, the technology is simple, and the industrial production degree is high; the field wet operation is less, and the environment is protected; the component has light weight, regular size, high transportation efficiency, convenient on-site hoisting construction and saves construction period and construction cost. The components are nontoxic, harmless and nonirritating in production and use engineering, and can not generate harmful smoke when being combusted in fire.
The invention also relates to a cavity structural slab which can be used as a load-bearing structural slab such as a building wallboard, a floor slab and the like, and is formed by integrally pouring the permanent bamboo-based composite bearing plate, referring to fig. 13, wherein the permanent bamboo-based composite bearing plate comprises an upper panel 9, a lower panel 9, a side panel 10 and an inner partition plate 11, the upper panel, the lower panel and the side panel are enclosed to form a cavity structure, and the inner partition plate is connected with the upper panel and the lower panel to divide the cavity structure into a plurality of inner cavities 12.
In the invention, the thickness of the permanent bamboo-based composite bearing plate is 10-50mm, the distance between the inner partition plates is 200-1000mm, and the overall thickness is 100-500 mm.
In the invention, the inner cavity of the cavity structural slab is filled with a filling material 13, such as a light heat-insulating material or concrete, the light heat-insulating material is preferably a foam concrete, rock wool or an extruded sheet, and the filling material can not only preserve heat, insulate heat and sound, but also serve as an inner mold for casting the cavity structural slab, and is integrally cast and molded in a factory.
The cavity structural plate is integrally cast and molded in a factory; the wall plate and floor slab can also be made into cavity components by core-pulling process. The cavity wall plate and the floor slab can be widely applied to inner walls, outer walls and floor slabs of industrial and civil buildings, the cavity system has light dead weight, the volume weight of the material is only half of that of concrete, the structure dead weight can be effectively reduced, the earthquake action of the structure is reduced, and the cavity wall plate and the floor slab have the characteristics of high strength, good ductility, good heat preservation and sound insulation performance, good waterproof and moisture-proof performance, good anti-permeability and anti-cracking performance, good fireproof and anti-corrosion performance, convenient construction and installation and the like, are convenient to process and transport, simple to install on site, strong in operability, high in construction speed, high in industrialization degree, less in-site wet operation, green and environment-friendly.
Thus, it should be understood by those skilled in the art that while exemplary embodiments of the present invention have been illustrated and described in detail herein, many other variations and modifications can be made, which are consistent with the principles of the invention, from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (15)
1. A permanent bamboo-based composite bearing plate, comprising: assembly bamboo strips, fiber mesh cloth and a cementing material, wherein,
the assembled bamboo strips are formed by longitudinally cutting bamboo, the cutting width of the bamboo is 5-40mm, the bamboo strips are vertically placed during assembly, adjacent bamboo strips are arranged in a staggered mode, first gaps are formed among the adjacent bamboo strips at intervals, the width of each first gap is 2-5mm, the cutting width of the bamboo is the height of the bamboo strip, and the wall thickness of the bamboo is the width of the bamboo strip;
the fiber gridding cloth is attached to the upper surface and the lower surface of the assembled bamboo strip, the side surfaces and the end surfaces of the assembled bamboo strip are completely wrapped from the periphery, and the inner side of the fiber gridding cloth is separated from the side surfaces and the end surfaces of the assembled bamboo strip to form a second gap;
the cementing materials are poured in the first gaps, the upper surface, the lower surface and the peripheral side surfaces of the outer sides of the fiber gridding cloth are formed, the cementing materials in the first gaps form thin-wall connecting support ribs, the cross sections of the thin-wall connecting support ribs are embodied as support columns, the longitudinal sections and the planes of the thin-wall connecting support ribs are embodied as support walls, and the cementing materials on the upper surface, the lower surface and the peripheral side surfaces of the outer sides of the fiber gridding cloth form a bearing protection bonding layer;
and a cementing material is poured in the second gap to form a bearing protective bonding layer.
2. The permanent bamboo-based composite bearing board according to claim 1, wherein:
the length of the bamboo strips is 500-2000mm, and the longitudinal splicing gap distance between adjacent bamboo strips is 100-1000 mm.
3. The permanent bamboo based composite bearing board according to claim 1, characterized in that:
the main material of the cementing material is a fiber reinforced cement-based material.
4. The permanent bamboo-based composite bearing board according to claim 3, wherein:
the fiber-reinforced cement-based material is fiber-reinforced magnesite cement containing a stabilizer, namely the stabilizer and the reinforcing fiber are added into the magnesite cement.
5. The permanent bamboo-based composite bearing board according to claim 1, wherein:
and a filling material is added into the cementing material, and the filling material is sawdust or ceramsite.
6. The permanent bamboo based composite bearing board according to claim 1, characterized in that:
the assembled bamboo strips are in a unidirectional single-layer assembled assembly, and adjacent bamboo strips are vertically arranged in parallel at intervals.
7. The permanent bamboo-based composite bearing board according to claim 1, wherein:
the assembly bamboo strips are in a bidirectional multilayer assembly, the upper layer of bamboo strips and the lower layer of bamboo strips are vertically superposed, the lower layer of bamboo strips are vertically placed at intervals in parallel along the transverse direction, and the upper layer of bamboo strips are vertically placed at intervals in parallel along the longitudinal direction.
8. The permanent bamboo-based composite bearing board according to claim 7, wherein:
and a third gap is arranged between the upper layer of bamboo strip and the lower layer of bamboo strip, and a cementing material is poured in the third gap and forms a bearing protective bonding layer.
9. The permanent bamboo-based composite bearing board according to claim 8, wherein:
and a fiber mesh cloth is arranged in the third gap, and cementing materials are poured between the fiber mesh cloth and the upper and lower layer blank bamboo battens.
10. A process for manufacturing a permanent bamboo based composite bearing board according to any of claims 1-9, characterized in that it comprises the following steps:
cutting the bamboo wood, cutting the bamboo wood along the longitudinal direction to form bamboo strips, and controlling the cutting width of the bamboo wood to be uniform during cutting to form a plurality of bamboo strips with the same height;
assembling bamboo strips, namely assembling a plurality of cut bamboo strips in an assembling mould, and controlling gaps with the same interval between adjacent bamboo strips during assembling;
attaching fiber gridding cloth, covering the fiber gridding cloth on the upper surface, the lower surface and the peripheral side surfaces of the bamboo strips after the bamboo strip assembly is finished, and temporarily fixing the fiber gridding cloth;
pouring a cementing material, after the assembled bamboo strips are attached and the fiber gridding cloth is temporarily fixed, pouring the cementing material, wherein the cementing material is fully poured into all gaps to fully wrap the bamboo strips;
curing and hardening, and forming a permanent bamboo-based composite bearing plate by the cooperative work of the bamboo strips, the fiber gridding cloth and the cementing material.
11. A process for manufacturing a permanent bamboo based composite bearing board according to any of claims 1-9, characterized in that it comprises the steps of:
cutting the bamboo wood, cutting the bamboo wood along the longitudinal direction to form bamboo strips, and controlling the cutting width of the bamboo wood to be uniform during cutting to form a plurality of bamboo strips with the same height;
assembling bamboo strips, namely assembling a plurality of cut bamboo strips in an assembling mould, and controlling gaps with the same interval between adjacent bamboo strips during assembling;
pouring a cementing material, pouring the cementing material into the gaps of the bamboo strips and the upper surface, the lower surface and the peripheral side surfaces of the assembled bamboo strips, wherein the cementing material is fully poured into all the gaps to fully wrap the bamboo strips;
pressing fiber gridding cloth in, after pouring a cementing material into the assembled bamboo strips, attaching the fiber gridding cloth to the upper surface, the lower surface and the peripheral side surfaces of the assembled bamboo strips, pressing the fiber gridding cloth into the cementing material, and adhering and fixing the fiber gridding cloth and the cementing material;
curing and hardening, and forming the permanent bamboo-based composite bearing plate by the cooperative work of the bamboo strips, the fiber mesh cloth and the cementing material.
12. The utility model provides a cavity structural slab, includes top panel, lower panel, curb plate and interior baffle, top panel, lower panel and curb plate enclose to close and form the cavity structure, interior baffle is connected with top panel and lower panel, separates the cavity structure and forms a plurality of inner chambers its characterized in that: the upper panel, the lower panel, the side plates and the inner partition plate are integrally cast by adopting the permanent bamboo-based composite bearing plate as claimed in any one of claims 1 to 9.
13. The cavity structural panel in accordance with claim 12, wherein:
and the inner cavity of the cavity structure plate is filled with a light heat-insulating material.
14. The cavity structural panel of claim 13, wherein:
the light heat-insulating material is foam concrete, rock wool or an extruded sheet, and the filling material can not only insulate heat and sound, but also serve as an inner mold for pouring the cavity structural slab, and is integrally poured and formed in a factory.
15. The cavity structural panel of claim 12, wherein:
the cavity structure board inner chamber is filled with the concrete, and the filler material can enough keep warm, insulate against heat and sound insulation, acts as the centre form of pouring the cavity structure board again, pours the shaping in factory wholly.
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| CN113404207B (en) * | 2021-06-24 | 2023-04-11 | 重庆涛扬绿建科技有限公司 | Bamboo-based composite cavity structural slab and construction process |
| CN115741909A (en) * | 2022-11-24 | 2023-03-07 | 寿光市鲁丽木业股份有限公司 | Anti-corrosion and moisture-proof bamboo-wood composite shaving board and preparation method and application thereof |
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