Prefabricated environment-friendly multi-layer composite structure bamboo fiber concrete wallboard

Abstract

The utility model relates to the technical field of assembly type building wallboards, in particular to a prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard which comprises a wall body, a first clamping unit and a second clamping unit, and the first clamping unit and the second clamping unit are arranged at the two ends of the wall body respectively. The adjacent wall bodies are connected in a clamped mode through the first clamping units and the second clamping units, each wall body comprises a high-strength waste material layer and a light heat preservation and sound absorption layer, and the light heat preservation and sound absorption layers are arranged in the middles of the high-strength waste material layers. According to the utility model, renewable environment-friendly materials are adopted, the manufacturing cost is low, the anti-cracking capability and durability of the wallboard can be obviously improved by doping the bamboo fibers, the ceramsite concrete is of a porous structure, closed-cell foam is doped, heat preservation, sound absorption and energy absorption can be realized, and the weight is light; the utility model has the advantages of environmental protection, light weight, strong anti-cracking capability, high connection strength, good anti-seismic property and good heat preservation and sound absorption performance, and is easy to popularize and apply.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated building wallboard technical field, especially a prefabricated environment -friendly multilayer composite structure bamboo fiber concrete wallboard. BACKGROUND

[0002] With the global resource shortage and environmental problems aggravating, our country vigorously promotes the development of green building, emphasizes in the whole life cycle of building, maximumly saves resources, protects the environment and reduces pollution. In the field of construction, using construction waste and industrial waste becomes one of important ways to realize green building. Construction waste such as discarded concrete, brick and so on, and industrial waste such as fly ash, tailings and so on, after reasonable processing and processing, can be used as the substitute or admixture of building material, not only can reduce the exploitation of natural resources, but also can reduce construction cost, reduce the emission of waste.

[0003] China's bamboo resources are rich, its growth is rapid, 3-5 years can be made into wood, and the renewable nature is strong, and the cost is low, the planting and felling cost is small, and the cost performance is high, and as an environment-friendly renewable material, it has obvious advantages in the field of construction. Bamboo fiber made of bamboo as raw material can be added to building materials as reinforcing material, and the strength and toughness can effectively improve the mechanical properties of building materials, enhance the durability, crack resistance, stability and bearing capacity of structure.

[0004] The existing prefabricated wallboard is mostly hollow wallboard made of ordinary ceramsite concrete or ordinary concrete, has the advantages of light weight, good sound insulation effect, but the outer surface of the wallboard itself is easy to crack, the connection stability is poor, and the environmental protection benefit needs to be improved.

[0005] Therefore, we need a prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard, which is environment-friendly, light, strong, high in connection strength, good in anti-seismic performance and sound-absorbing performance, can solve the problem that the outer surface of the existing prefabricated wallboard itself is easy to crack, the connection stability is poor, and the environmental protection benefit needs to be improved. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard, and aims at solving the problems in the above background technology.

[0007] To achieve the above object, the utility model provides a prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard, which comprises a wall body, a first clamping unit and a second clamping unit, the first clamping unit and the second clamping unit are respectively arranged at both ends of the wall body, and the first clamping unit and the second clamping unit are clamped and connected between adjacent wall bodies.

[0008] The wall body comprises a high-strength waste layer and a light thermal insulation and sound absorption layer, and the light thermal insulation and sound absorption layer is arranged at the middle part of the high-strength waste layer.

[0009] Preferably, the first clamping unit comprises a plurality of grooves, two grouting holes, a plurality of first grouting horizontal holes, a plurality of first grouting vertical holes and two grout outlet holes, and the second clamping unit comprises a plurality of protrusions, a plurality of second grouting horizontal holes and a plurality of second grouting vertical holes.

[0010] The grouting holes, the first grouting horizontal holes, the first grouting vertical holes and the grout outlet holes are arranged at one end of the high-strength waste layer close to the grooves, and the grouting holes and the grout outlet holes are arranged at the upper end and the lower end of the high-strength waste layer respectively.

[0011] The second grouting horizontal holes and the second grouting vertical holes are arranged at one end of the light thermal insulation and sound absorption layer close to the protrusions.

[0012] Preferably, the grooves and the protrusions are provided with grouting gaps in the direction of the first grouting horizontal holes, and the grouting gaps are 5mm-10mm.

[0013] The grouting gaps are used for flowing and grouting connecting slurry.

[0014] Preferably, the high-strength waste layer is a bamboo fiber concrete layer made of building waste recycled fine aggregate and first bamboo fibers.

[0015] The light thermal insulation and sound absorption layer is a foam concrete layer made of ceramsite concrete as a substrate and mixed with second bamboo fibers and closed-cell foam.

[0016] Preferably, the diameter of the first bamboo fibers is 8μm-25μm, and the material volume ratio of the first bamboo fibers is 1%-3% of the high-strength waste layer.

[0017] Preferably, the diameter of the second bamboo fibers is 5μm-15μm, and the material volume ratio of the second bamboo fibers is 0.4%-1.2% of the light thermal insulation and sound absorption layer.

[0018] Preferably, the material volume ratio of the closed-cell foam is 40%-70% of the light thermal insulation and sound absorption layer.

[0019] Preferably, the connecting slurry adopts ECC slurry with a slump of 200mm-260mm.

[0020] Therefore, the prefabricated environment-friendly multi-layer composite structure bamboo fiber concrete wallboard has the following beneficial effects:

[0021] First, the environmental benefits are high: the wall body adopts a high-strength waste layer and a light thermal insulation and sound absorption layer, the high-strength waste layer is a bamboo fiber concrete layer made of bamboo fiber mixed into recycled fine aggregate concrete of construction waste, the recycled fine aggregate of construction waste is processed through crushing, screening and other processes, and the replacement rate of the recycled fine aggregate of construction waste instead of natural fine aggregate is 30%-50%; the light thermal insulation and sound absorption layer is a foam concrete layer mixed with bamboo fiber and closed-cell foam based on ceramsite concrete, and the ceramsite in the ceramsite concrete is made of industrial waste such as fly ash, coal gangue, slag and tailings; the bamboo fiber is mixed in the high-strength waste layer and the light thermal insulation and sound absorption layer, bamboo resources are abundant in China, and the bamboo fiber processing process is environmentally friendly, so the wall body can highly recycle construction waste and industrial waste, promote the development of green building and the application and promotion of bamboo in the construction field, and has high environmental benefits.

[0022] Second, the quality is light, and the construction benefit is good: the light thermal insulation and sound absorption layer in the utility model is a foam concrete layer mixed with bamboo fiber and closed-cell foam based on ceramsite concrete, and the volume ratio of the mixed closed-cell foam material is 40%-70% of the light sound insulation and thermal insulation layer, and the mixed closed-cell foam material can reduce the amount of cement and the density of concrete under the premise of ensuring that the concrete has certain strength and durability.

[0023] The utility model is a fabricated component, and the design is standardized and the production is factory-based; therefore, the utility model can improve construction efficiency, shorten construction period, reduce construction cost, and has high construction benefit.

[0024] Third, the anti-cracking ability is strong, the connection strength is high, and the anti-seismic performance is good: the high-strength waste layer and the light thermal insulation and sound absorption layer in the utility model both mix reasonable content of bamboo fiber, and when the concrete wallboard is subjected to external force, the bamboo fiber initially cracks like a bridge across both ends of the crack, so that the wallboard has good toughness and durability and is not easy to brittle fracture, can absorb energy under impact or vibration, reduce crack generation and expansion, and improve the anti-cracking and anti-seismic performance of the wallboard.

[0025] The first clamping unit and the second clamping unit are stably connected through the ECC slurry, the ECC slurry has high early strength and stable late strength, the deformation resistance of the connection part is strong, the structural seismic performance can be improved, and the ECC slurry has good fluidity and filling property, can fully fill the grouting gap and pore, and ensure the connection quality.

[0026] Fourth, good heat preservation and sound absorption performance: the light heat preservation and sound absorption layer in the utility model is the foam concrete layer made of ceramic granule concrete as the matrix, mixed with bamboo fiber and closed cell foam, the porous structure of ceramic granule hinders the rapid conduction of heat, makes the heat transfer path complex and long, reduces the heat conduction capacity; the foam concrete contains a large amount of closed bubbles, increases the thermal resistance, reduces the heat transfer of solid material, the combination of the two further reduces the thermal conductivity, has excellent heat preservation performance; in the light heat preservation and sound absorption layer, the porous structure of ceramic granule and the closed bubbles of foam provide pore space for sound wave propagation and absorption, the sound wave reflects, refracts and scatters in the pores after entering, consumes energy. Therefore, the utility model has high heat preservation and sound absorption performance. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structure schematic view of the prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard in the utility model embodiment;

[0028] Figure 2 It is a structure schematic view of the first clamping unit of the prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard in the utility model embodiment;

[0029] Figure 3 It is a structure schematic view of the second clamping unit of the prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard in the utility model embodiment;

[0030] Figure 4 It is a three-dimensional schematic view of the adjacent wallboard connection of the prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard in the utility model embodiment;

[0031] Figure 5 It is a sectional view of the adjacent wallboard connection of the prefabricated environment-friendly multilayer composite structure bamboo fiber concrete wallboard in the utility model embodiment;

[0032] Figure 6 It is Figure 4 It is a local enlarged view of A in the utility model;

[0033] Reference signs

[0034] 1, wall body; 2, first clamping unit; 3, second clamping unit; 4, high-strength waste layer; 5, light heat preservation and sound absorption layer; 6, groove; 7, grouting hole; 8, first grouting horizontal hole; 9, first grouting vertical hole; 10, grouting hole; 11, protrusion; 12, second grouting horizontal hole; 13, second grouting vertical hole; 14, grouting gap. DETAILED DESCRIPTION

[0035] The technical scheme of the utility model is further described below through the drawings and embodiments.

[0036] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] Example

[0038] like Figures 1-6 As shown, this utility model discloses a prefabricated environmentally friendly multi-layer composite bamboo fiber concrete wall panel, including a wall body 1, a first snap-fit ​​unit 2, and a second snap-fit ​​unit 3. The first snap-fit ​​unit 2 and the second snap-fit ​​unit 3 are respectively disposed at both ends of the wall body 1. Adjacent wall bodies 1 are connected by snap-fitting the first snap-fit ​​unit and the second snap-fit ​​unit. The wall body 1 includes a high-strength waste material layer 4 and a lightweight thermal insulation and sound absorption layer 5. The lightweight thermal insulation and sound absorption layer 5 is disposed in the middle part of the high-strength waste material layer 4.

[0039] The first snap-fit ​​unit 2 includes several grooves 6, two grouting holes 7, several first grouting horizontal holes 8, several first grouting vertical holes 9, and two grout outlet holes 10. The two grouting holes 7, the first grouting horizontal holes 8, the first grouting vertical holes 9, and the two grout outlet holes 10 are all located at one end of the high-strength waste material layer 4 near the grooves 6. The two grouting holes 7 and the two grout outlet holes 10 are respectively located at the upper edge and the lower edge of the high-strength waste material layer 4. The second snap-fit ​​unit 3 includes several protrusions 11, several second grouting horizontal holes 12, and several second grouting vertical holes 13. The second grouting horizontal holes and the second grouting vertical holes 13 are all located at one end of the lightweight thermal insulation and sound absorption layer 5 near the protrusions 11.

[0040] The high-strength waste layer 4 is a bamboo fiber concrete layer made of recycled fine aggregate from construction waste and first bamboo fiber. The replacement rate of recycled fine aggregate from construction waste with natural fine aggregate is 30%-50%. When recycled fine aggregate from construction waste is made from waste bricks, the replacement rate of natural fine aggregate is 30%-40%. When recycled fine aggregate from construction waste is made from waste concrete blocks, the replacement rate of natural fine aggregate is 35%-50%. The diameter of the first bamboo fiber incorporated into the high-strength waste layer 4 is 8μm-25μm, and the volume ratio of the first bamboo fiber is 1%-3% of the high-strength waste layer 4.

[0041] The lightweight heat-insulating and sound-absorbing layer 5 is a foam concrete layer made of ceramsite concrete as a matrix and mixed with the second bamboo fiber and closed-cell foam. The diameter of the second bamboo fiber mixed in the lightweight heat-insulating and sound-absorbing layer 5 is 5-15 μm, and the material volume ratio of the second bamboo fiber is 0.4-1.2% of the lightweight heat-insulating and sound-absorbing layer.

[0042] The ceramsite used in the ceramsite concrete of the lightweight heat-insulating and sound-absorbing layer 5 is made of industrial waste such as fly ash, coal gangue, slag and tailings, and the volume ratio of each is 40-70% of fly ash, 30-60% of coal gangue, 30-50% of slag and 20-50% of tailings. The porous structure of the ceramsite hinders the rapid conduction of heat, making the heat transfer path complex and long, thereby reducing the thermal conductivity of the material.

[0043] The material volume ratio of the closed-cell foam is 40-70% of the lightweight heat-insulating and sound-absorbing layer. The closed-cell foam material mixed therein generates a large number of tiny bubbles through a foaming agent, and the bubbles form a large number of closed pores inside the concrete. On the premise of ensuring the strength and durability of the concrete, the amount of cement can be reduced, thereby reducing the density of the concrete. The combination of ceramsite and closed-cell foam further reduces the thermal conductivity of the overall material, making it have excellent heat-insulating performance. On the other hand, the porous structure of the ceramsite and the large number of closed bubbles formed by the foam provide a large number of pore spaces for the propagation and absorption of sound waves. When sound waves enter the material, they will continuously reflect, refract and scatter in these pores, causing the energy of the sound waves to be gradually consumed, thereby having high heat-insulating and sound-absorbing performance.

[0044] When the adjacent wall bodies 1 are assembled, the recesses 6 of the wall bodies 1 are first clamped with the protrusions 11, at this time the grouting holes 7 and the grout outlet holes 10 correspond to the second grouting horizontal holes 12, the first grouting vertical holes 9 correspond to the second grouting vertical holes 13, the first grouting horizontal holes 8 and the first grouting vertical holes 9 are through, the second grouting horizontal holes 12 and the second grouting vertical holes 13 are through, when the adjacent wall bodies 1 are assembled, the first clamping unit 2 and the second clamping unit 3 are clamped, the recesses 6 on the first clamping unit 2 and the protrusions 11 on the second clamping unit 3 leave a grouting gap 14 in the direction along the first grouting horizontal hole 8, and the grouting gap 14 is set to 5mm-10mm, the grouting gap 14 is used for flowing and grouting connecting slurry, the connecting slurry adopts ECC slurry with a slump of 200mm-260mm, the grouting mode is different, and the slump of the connecting slurry is also different, when the grouting mode is pressure grouting method, vacuum assisted grouting method and gravity grouting method, the slump is recommended to be 240mm-260mm, 220mm-240mm and 200mm-220mm respectively, when it is observed that the ECC slurry uniformly seeps out of the grout outlet holes 10, it means that the grouting grouting gap 14 has been basically filled, at this time the grouting can be stopped, and finally the excess concrete around the grout outlet holes 10 is removed, that is, the connection of the adjacent wallboards is completed, the ECC slurry has high early strength and stable later strength, the connected part has strong deformation resistance, can improve the seismic performance of the whole structure, and the ECC slurry has good fluidity and filling property, can fully fill the grouting gap 14 and the pores of the connected part, and ensure the connection quality.

[0045] Therefore, the prefabricated environment-friendly multi-layer composite structure bamboo fiber concrete wallboard has the advantages of environmental protection, light weight, strong anti-cracking ability, high connection strength, good anti-seismic performance and sound insulation and sound absorption performance, and is easy to popularize and apply.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can still be modified or replaced equivalently, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. A prefabricated eco-friendly multi-layer composite structure bamboo fiber concrete wall panel, characterized in that: The wall body, the first clamping unit and the second clamping unit are provided, the first clamping unit and the second clamping unit are arranged at two ends of the wall body respectively, and the wall bodies are connected through the first clamping unit and the second clamping unit; The wall body comprises a high-strength waste layer and a light-weight sound-absorbing layer, and the light-weight sound-absorbing layer is arranged at the middle part of the high-strength waste layer.

2. A precast environment-friendly multi-layer composite structure bamboo fiber concrete wallboard according to claim 1, characterized in that: The first clamping unit comprises a plurality of grooves, two grouting holes, a plurality of first grouting horizontal holes, a plurality of first grouting vertical holes and two grout outlet holes, and the second clamping unit comprises a plurality of protrusions, a plurality of second grouting horizontal holes and a plurality of second grouting vertical holes. The grouting hole, the first grouting horizontal hole, the first grouting vertical hole and the grout outlet hole are arranged at one end of the high-strength waste layer close to the groove, and the grouting hole and the grout outlet hole are arranged at the upper end and the lower end of the high-strength waste layer respectively. The second grouting horizontal hole and the second grouting vertical hole are arranged at one end of the light-weight sound-absorbing layer close to the protrusion.

3. A pre-fabricated environment-friendly multi-layer composite structure bamboo fiber concrete wall panel according to claim 2, characterized in that: The groove and the protrusion leave a grouting gap in the direction of the first grouting horizontal hole, and the grouting gap is 5mm-10mm. The grouting gap is used for circulating and injecting connecting slurry.

4. A pre-fabricated environment-friendly multi-layer composite structure bamboo fiber concrete wall panel according to claim 2, characterized in that: The high-strength waste layer is a bamboo fiber concrete layer made of building waste recycled fine aggregate and first bamboo fiber; The light-weight sound-absorbing layer is a foam concrete layer made of ceramsite concrete as a substrate, mixed with second bamboo fiber and closed-cell foam.

5. A pre-fabricated environment-friendly multi-layer composite structure bamboo fiber concrete wall panel according to claim 3, characterized in that: The connecting slurry adopts ECC slurry with a slump of 200mm-260mm.

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