CN114164960A - Preparation method of multilayer concrete composite prefabricated external wall panel - Google Patents
Preparation method of multilayer concrete composite prefabricated external wall panel Download PDFInfo
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- CN114164960A CN114164960A CN202010946772.XA CN202010946772A CN114164960A CN 114164960 A CN114164960 A CN 114164960A CN 202010946772 A CN202010946772 A CN 202010946772A CN 114164960 A CN114164960 A CN 114164960A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
- E04C2/2885—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material with the insulating material being completely surrounded by, or embedded in, a stone-like material, e.g. the insulating material being discontinuous
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
- B28B1/16—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted for producing layered articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
- E04C2/46—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose specially adapted for making walls
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- Manufacturing & Machinery (AREA)
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
The embodiment of the invention relates to a preparation method of a multilayer concrete composite prefabricated external wall panel, relates to the technical field of assembly type buildings, and mainly aims to provide a preparation method of a multilayer concrete composite prefabricated external wall panel. The preparation method comprises the following steps: pouring concrete with first strength into the wallboard mould, placing a reinforcing steel bar assembly on the poured concrete with first strength, and pouring the concrete with first strength to form a first base layer; placing a heat preservation core layer into the wallboard mould; pouring concrete with second strength into the wallboard mould, forming a second base layer on the side part of the heat-insulating core layer, and positioning at least part of reinforcing section steel in the second base layer, wherein the first strength is greater than the second strength; and a covering layer is poured into the wallboard mould, covers the heat-insulating core layer and the second base layer, so that the multilayer concrete composite prefabricated external wallboard with higher strength can be prepared at lower cost, and the marketization is easy to realize.
Description
Technical Field
The embodiment of the invention relates to the technical field of assembly type buildings, in particular to a preparation method of a multilayer concrete composite prefabricated external wall panel.
Background
At present, the traditional construction mode is adopted for designing and constructing a large number of building outer walls in China, the methods of building, plastering, pasting, heat preservation, decoration and the like are mainly relied on manually on site, the mechanical and component degree of site operation is low, the problems of large material waste, poor engineering quality, high use and maintenance cost and the like are increasingly prominent, and the problems that attention must be paid and measures must be taken for improvement are solved.
High-quality outer wall part supports are urgently needed for building industrialization and prefabricated buildings, and for outer wall enclosure systems of steel structure systems and reinforced concrete structure systems, prefabricated concrete outer wall panel parts are inevitably preferred. Alternatively, cheaper low strength concrete is selected for production, but the product produced is thicker and heavier. The two types of precast concrete external wall panels are difficult to realize marketization.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a method for preparing a multilayer concrete composite prefabricated external wall panel, and mainly aims to provide a method for preparing a multilayer concrete composite prefabricated external wall panel, which is used for preparing a high-quality multilayer concrete composite prefabricated external wall panel with low cost and high quality.
In order to achieve the above purpose, the embodiments of the present invention mainly provide the following technical solutions:
the embodiment of the invention provides a preparation method of a multilayer concrete composite prefabricated external wall panel, which comprises the following steps:
pouring concrete with first strength into a wallboard mould, placing a reinforcing steel bar assembly on the concrete with the first strength, and pouring the concrete with the first strength to form a first base layer, wherein the reinforcing steel bar assembly comprises reinforcing steel bars and a steel wire mesh, the reinforcing steel bars are welded with the steel wire mesh, one side of the steel wire mesh faces the concrete with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength;
placing a heat-insulating core layer into the wallboard mould, so that the heat-insulating core layer is placed on the first base layer, and at least part of the reinforced section steel is positioned on the side part of the heat-insulating core layer;
pouring concrete with second strength into the wallboard mould, forming a second base layer on the side part of the heat-insulating core layer, and positioning at least part of reinforcing section steel in the second base layer, wherein the first strength is greater than the second strength;
and pouring a covering layer into the wallboard mould, wherein the covering layer covers the heat-insulating core layer and the second base layer.
The purpose of the embodiments of the present invention and the technical problems solved thereby can be further realized by the following technical measures.
Optionally, in the preparation method of the multilayer concrete composite prefabricated external wallboard, concrete with a first strength is poured into the wallboard mold, and a reinforcing steel bar assembly is placed on the concrete with the first strength, the reinforcing steel bar assembly includes reinforcing steel bars and a steel wire mesh, the reinforcing steel bars are welded to the steel wire mesh, one side of the steel wire mesh faces the concrete with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength, and the preparation method includes:
pouring concrete with first strength into the wallboard mould for the first time;
placing a reinforcing steel bar assembly on the concrete poured with the first strength, wherein the reinforcing steel bar assembly comprises reinforcing steel bars and a steel wire mesh, and the reinforcing steel bars are welded with the steel wire mesh, one side of the steel wire mesh faces the concrete poured with the first strength, and one side of the reinforcing steel bar faces away from the concrete poured with the first strength;
and pouring concrete with the first strength into the wallboard mould again, covering the steel wire mesh with the poured concrete with the first strength again, and forming a first base layer by the first-time poured concrete with the first strength and the second-time poured concrete with the first strength.
Optionally, in the preparation method of the multilayer concrete composite prefabricated external wallboard, concrete with a first strength is poured into the wallboard mold, and a reinforcing steel bar assembly is placed on the concrete with the first strength, the reinforcing steel bar assembly includes reinforcing steel bars and a steel wire mesh, the reinforcing steel bars are welded to the steel wire mesh, one side of the steel wire mesh faces the concrete with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength, and the preparation method includes:
pouring concrete with first strength into the wallboard mould,
placing a reinforcing steel bar assembly on concrete poured with first strength, wherein the reinforcing steel bar assembly comprises reinforcing steel bars and a steel wire mesh, the reinforcing steel bars are welded with the steel wire mesh, one side of the steel wire mesh faces the concrete poured with the first strength, and one side of the reinforcing steel bars faces away from the concrete poured with the first strength, so that the steel wire mesh is immersed in the concrete poured with the first strength.
Optionally, the preparation method of the multilayer concrete composite prefabricated external wall panel, before pouring the covering layer into the wall panel mold, includes:
and a bridge-cut-off membrane shell is arranged on the second base layer around the heat-preservation core layer.
Optionally, the preparation method of the multilayer concrete composite prefabricated external wall panel further includes:
and connecting the bridge cut-off membrane shell and the second base layer by using a rivet.
Optionally, in the preparation method of the multilayer concrete composite prefabricated external wallboard, the inner side of the bridge cut-off membrane shell faces the second base layer, and fire retardant particles are bonded to the outer side of the bridge cut-off membrane shell.
Optionally, in the preparation method of the multilayer concrete composite prefabricated external wallboard, the heat insulation core layer includes a fire-proof layer and a heat insulation layer which are stacked, and the fire-proof layer, the heat insulation layer and the first base layer are stacked in sequence.
Optionally, in the preparation method of the multilayer concrete composite prefabricated external wallboard, the reinforcing steel bar assembly comprises a hanging piece, a first end of the hanging piece is welded to the reinforcing section steel, and a second end of the hanging piece extends out of the wallboard mold.
Optionally, in the preparation method of the multilayer concrete composite prefabricated external wallboard, the wallboard mold includes a wallboard outer side mold and a door and window opening side mold, and the door and window opening side mold is located in the wallboard outer side mold.
Optionally, in the preparation method of the multilayer concrete composite prefabricated external wall panel, the covering layer is glass fiber net polymer anti-crack mortar.
By means of the technical scheme, the preparation method of the multilayer concrete composite prefabricated external wall panel provided by the technical scheme of the invention at least has the following advantages:
according to the technical scheme provided by the embodiment of the invention, the first base layer with high price and high strength is poured in the wallboard mould, the reinforcing steel bar assembly is placed, the steel wire mesh of the reinforcing steel bar assembly is placed in the first base layer, then the second base layer with low price and low strength is poured, and at least part of reinforcing steel bar of the reinforcing steel bar assembly is positioned in the second base layer, so that the first base layer and the second base layer are connected to form an organic combination body, a stable-strength organism can be formed, compared with the prior art, the multi-layer concrete composite prefabricated external wallboard with high strength can be prepared at low cost, and marketization is easy to realize.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the embodiments of the present invention more clear and clear, and to implement the technical solutions according to the contents of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view showing a brief introduction of process steps of a method for manufacturing a multi-layered concrete composite prefabricated wall panel according to an embodiment of the present invention;
fig. 2 is a schematic sectional view of a structure of a multilayer concrete composite prefabricated external wall panel prepared by the preparation method of the multilayer concrete composite prefabricated external wall panel provided by the embodiment of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the preset embodiments of the invention, the following detailed description will be made on the specific implementation modes, structures, characteristics and effects of the method for manufacturing a multilayer concrete composite prefabricated external wall panel according to the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Fig. 1 to 2 show an embodiment of a method for manufacturing a multilayer concrete composite prefabricated external wall panel according to the present invention, and referring to fig. 1 to 2, a method for manufacturing a multilayer concrete composite prefabricated external wall panel according to an embodiment of the present invention includes:
step A, pouring concrete with first strength into the wallboard mould 100, placing a reinforcing steel bar assembly 20 on the concrete with the first strength, and pouring the concrete with the first strength to form a first base layer 11, wherein the reinforcing steel bar assembly 20 comprises reinforcing steel bars 21 and a steel wire mesh 22, the reinforcing steel bars 21 are welded with the steel wire mesh 22, one side of the steel wire mesh 22 faces the concrete with the first strength to be poured, and one side of the reinforcing steel bars 21 faces away from the concrete with the first strength to be poured;
specifically, in the implementation, in the step of implementing step a, in some embodiments:
pouring concrete 111 with first strength into the wallboard mould 100 for the first time;
placing a reinforcing steel bar assembly 20 on the concrete poured with the first strength, wherein the reinforcing steel bar assembly 20 comprises reinforcing steel bars 21 and a steel wire mesh 22, the reinforcing steel bars 21 are welded with the steel wire mesh 22, one side of the steel wire mesh 22 faces the concrete poured with the first strength, and one side of the reinforcing steel bars 21 faces away from the concrete poured with the first strength;
and pouring the concrete 112 with the first strength into the wallboard mould 100 again, wherein the steel wire mesh 22 is covered by the concrete with the first strength poured again, and the first base layer 11 is formed by the concrete with the first strength poured for the first time and the concrete with the first strength poured again.
The steel wire mesh 22 can be pre-buried well in the first base layer 11 by concrete pouring twice.
Specifically, in the implementation, in the step of implementing step a, in some embodiments: the method comprises the following steps:
concrete of a first strength is poured into the wallboard mold 100,
placing reinforcing steel bar assembly 20 on the concrete of pouring first intensity, reinforcing steel bar assembly 20 includes reinforced shaped steel 21 and wire net 22, reinforced shaped steel 21 with wire net 22 welding, wherein, wire net 22 one side is towards the concrete of the first intensity of pouring, reinforced shaped steel 21 one side is the concrete of the first intensity of pouring dorsad, makes wire net 22 dip in the concrete of pouring first intensity.
The embodiment of immersing the steel wire mesh 22 in the concrete of the first strength may be implemented in different ways according to different situations, for example, for the reinforcing steel bar assembly 20 with a heavy weight, the steel wire mesh 22 is immersed in the concrete of the first strength by itself under its own weight. For reinforcing bar assemblies 20 having a relatively low weight, a relatively precise deep immersion operation can be achieved by placing a weight of a predetermined weight on reinforcing bar assembly 20.
For the multilayer concrete composite prefabricated external wallboard needing to be prefabricated with the hanging pieces, the reinforcing steel bar assembly 20 comprises the hanging pieces, the first ends of the hanging pieces are welded with the reinforcing steel bars 21, the second ends of the hanging pieces extend out of the wallboard mould 100, namely, the multilayer concrete composite prefabricated external wallboard after the wallboard mould 100 is poured and formed is exposed, and the second ends of the hanging pieces are used as connecting ends of buildings.
For the fabrication of a monolithic slab-type multi-layered concrete composite prefabricated outer panel, the panel mold 100 may include a bottom mold table and a perimeter mold. In the preparation of the window plate type multilayer concrete composite prefabricated external wallboard, the wallboard die 100 comprises a wallboard outer side die and a door and window hole side die, and the door and window hole side die is positioned in the wallboard outer side die.
For the multi-layer concrete composite prefabricated external wall panel with different strengths, on one hand, the steel wire mesh 22 is also provided with reinforcing steel bars, the reinforcing steel bars can be welded to the steel wire mesh 22, and the number, diameter and arrangement mode of the reinforcing steel bars are determined according to specific strength requirements. On the other hand, the reinforced section steel 21 is further provided with reinforcing ribs, the reinforcing ribs can be welded to the reinforced section steel 21, and the number, the diameter and the arrangement mode of the reinforcing ribs are determined according to specific strength requirements.
The cross section of the reinforcing steel 21 may be a closed ring, such as a rectangular section, a triangular section, etc. Alternatively, the cross section of the reinforcing steel 21 may be an open ring, such as a C-shape. In the process of pouring cement by adopting the C-shaped reinforced section steel 21, the cement can conveniently enter the reinforced section steel 21 at the opening of the split ring. In some embodiments, in order to enable good cement pouring in the subsequent process in the hollow reinforcing section steel 21 of the multilayer concrete composite prefabricated external wall panel, the plate material of the reinforcing section steel 21 is provided with through holes, and in the subsequent pouring, the cement on the outer side of the hollow reinforcing section steel 21 can enter the reinforcing section steel 21 through the through holes, so that the yield of products is improved.
Step B, placing an insulation core layer 30 into the wallboard mould 100, so that the insulation core material is placed on the first base layer 11, and at least part of the reinforced section steel 21 is positioned on the side part of the insulation core layer 30;
the heat preservation sandwich layer 30 can include heat preservation 32, flame retardant coating 31, selects different sandwich layers according to different demands, and the bottom of filling the space is arranged in to heat preservation 32, and flame retardant coating 31 and heat preservation 32 stack make flame retardant coating 31 heat preservation 32 and first basic unit 11 superpose in proper order. The heat insulating layer 32 may be an expandable polystyrene board, an extruded polystyrene heat insulating board, a polyurethane board, or the like, and is determined according to different functional requirements. The fire-proof layer 31 may be a foamed concrete layer, but is not limited thereto. Of course, the insulating core layer 30 may be a combination of two or more, or a combination of two or more.
Step C, pouring concrete with second strength into the wallboard mould 100, forming a second base layer 12 on the side part of the heat-insulating core layer 30, and positioning at least part of the reinforced section steel 21 in the second base layer 12, wherein the first strength is greater than the second strength;
in some embodiments, the first strength concrete may be fiber reinforced high performance concrete and the second strength concrete may be, but is not limited to, C60 concrete.
And D, pouring a covering layer 40 into the wallboard mould 100, wherein the covering layer 40 covers the heat-insulating core layer 30 and the second base layer 12.
The cover layer 40 may be fiberglass-based polymer anti-crack mortar to achieve long-term integrity of the outer wall, or may be made of other materials to meet different functional requirements.
In some embodiments, prior to step D, comprising:
and arranging a bridge cut-off membrane shell 50 on the second base layer 12 around the heat-preservation core layer 30.
After the second substrate 12 is provided with the bridge-cut film case 50, the bridge-cut film case 50 and the second substrate 12 may be coupled using rivets.
The bridge cut-off layer can be in the same plane with the top of the heat preservation sandwich layer 30, so that the cover body covers the heat preservation sandwich layer 30 and the bridge cut-off layer. The bridge cut-off layer and the top of the heat preservation core layer 30 form a bridge cut-off layer, and the bottom layer and the covering layer 40 are broken off, so that the heat preservation function of the multilayer concrete composite prefabricated external wall panel can be effectively improved.
The bridge-cutoff layer may be implemented in different structural forms, and the embodiments of the present application are described in the following embodiments, but not limited thereto.
The first implementation mode comprises the following steps: the bridge cut-off layer comprises a model shell, the inner side of the model shell is filled with aerogel, and the model shell is covered on the top of the second base layer 12 in a buckling manner, and the aerogel is covered between the model shell and the second base layer 12 in a buckling manner.
The second embodiment: the bridge cut-off layer is a hollow bridge cut-off shell, the bridge cut-off shell is arranged at the top of the second base layer 12, and the hollow part of the bridge cut-off shell is used for bridge cutting off the second base layer 12 and the cover body.
In the embodiment that the heat insulation layer 32 and the fireproof layer 31 are arranged in the heat insulation core layer 30, the inner side of the bridge cut-off layer is arranged at the top of the second base layer 12, and the outer side of the bridge cut-off layer is provided with fire retardant particles bonded by resin adhesive, wherein the fire retardant particles can be coarse sand particles, and the particle size of the coarse sand particles can be 2-8 mm. The fire retardant particles can be fire-resistant plastic particles, and the particle size of the fire-resistant plastic particles can be 2-8 mm. The grit particles are in the same plane as the fire barrier layer 31 and may form an integral fire barrier layer 31.
The material of the covering layer 40 may be set as needed, and may be, for example, a mortar surface layer, such as a glass fiber reinforced polymer anti-crack mortar surface layer, which can achieve high strength. In the preparation process, in order to facilitate the preparation of the mortar surface layer, the first side wall of the broken bridge layer is abutted against the heat-insulating core layer 30, the second side wall of the broken bridge layer is exposed, the first side wall of the broken bridge layer is opposite to the second side wall of the broken bridge layer, the second side wall of the broken bridge layer is back to the second base layer 12 and extends to form blocking walls, and after the mortar is distributed on the heat-insulating core layer 30 and the broken bridge layer, the covering layer 40 prepared by the mortar is arranged between the blocking walls of the broken bridge layers on the two sides.
According to the technical scheme provided by the embodiment of the invention, the first base layer with high price and high strength is poured in the wallboard mould, the reinforcing steel bar assembly is placed, the steel wire mesh of the reinforcing steel bar assembly is placed in the first base layer, then the second base layer with low price and low strength is poured, and at least part of reinforcing steel bar of the reinforcing steel bar assembly is positioned in the second base layer, so that the first base layer and the second base layer are connected to form an organic combination body, a stable-strength organism can be formed, compared with the prior art, the multi-layer concrete composite prefabricated external wallboard with high strength can be prepared at low cost, and marketization is easy to realize.
The multilayer concrete composite prefabricated external wall panel is made of steel wire meshes and concrete, the thickness of an inner core sandwiched heat-insulating core layer can be 60-100 mm, the total thickness of the multilayer concrete composite prefabricated external wall panel is 160-200 mm, the multilayer concrete composite prefabricated external wall panel can be welded with reinforced steel bars through hanging pieces to form a frame structure, and the reinforced concrete shear wall structure plays roles of decoration, heat insulation, fire prevention, water prevention and enclosure on the whole building. The wallboard has the characteristics of simple and convenient production process, light weight, reasonable structure, convenient transportation, convenient and quick on-site hoisting and installation, and integrates decoration, heat preservation, fire prevention, water prevention, enclosure and durability. The factory-like production of the wallboard has accurate, flat and compact appearance size, only caulking treatment between boards is carried out after the wallboard is installed, secondary plastering decoration treatment is not needed on the surfaces of the boards, manpower and material resources are greatly saved, and the comprehensive cost of the boards is saved by 100-200 yuan per square meter compared with the cost of other existing external wallboard.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the devices described above may be referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed apparatus should not be construed to reflect the intent as follows: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the components of the apparatus of the embodiments may be adapted and arranged in one or more arrangements different from the embodiments. The components of the embodiments may be combined into one component and, in addition, they may be divided into a plurality of sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the components of any apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination. The various component embodiments of the present invention may be implemented in hardware, or in a combination thereof.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or components not listed in a claim. The word "a" or "an" preceding a component or element does not exclude the presence of a plurality of such components or elements. The invention may be implemented by means of an apparatus comprising several distinct elements. In the claims enumerating several means, several of these means may be embodied by one and the same item. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. A preparation method of a multilayer concrete composite prefabricated external wall panel is characterized by comprising the following steps:
pouring concrete with first strength into a wallboard mould, placing a reinforcing steel bar assembly on the concrete with the first strength, and pouring the concrete with the first strength to form a first base layer, wherein the reinforcing steel bar assembly comprises reinforcing steel bars and a steel wire mesh, the reinforcing steel bars are welded with the steel wire mesh, one side of the steel wire mesh faces the concrete with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength;
placing a heat-insulating core layer into the wallboard mould, so that the heat-insulating core layer is placed on the first base layer, and at least part of the reinforced section steel is positioned on the side part of the heat-insulating core layer;
pouring concrete with second strength into the wallboard mould, forming a second base layer on the side part of the heat-insulating core layer, and positioning at least part of reinforcing section steel in the second base layer, wherein the first strength is greater than the second strength;
and pouring a covering layer into the wallboard mould, wherein the covering layer covers the heat-insulating core layer and the second base layer.
2. The method of claim 1, wherein the step of forming the multi-layer concrete composite prefabricated wall panel,
pour the concrete of first intensity in to the wallboard mould to place the reinforcing bar subassembly on pouring the concrete of first intensity, the reinforcing bar subassembly includes reinforced shaped steel and wire net, reinforced shaped steel with the wire net welding, wherein, the concrete of first intensity that wire net one side was pour towards, the concrete of first intensity that reinforced shaped steel one side was pour dorsad includes:
pouring concrete with first strength into the wallboard mould for the first time;
placing a reinforcing steel bar assembly on the concrete poured with the first strength, wherein the reinforcing steel bar assembly comprises reinforcing steel bars and a steel wire mesh, and the reinforcing steel bars are welded with the steel wire mesh, one side of the steel wire mesh faces the concrete poured with the first strength, and one side of the reinforcing steel bar faces away from the concrete poured with the first strength;
and pouring concrete with the first strength into the wallboard mould again, covering the steel wire mesh with the poured concrete with the first strength again, and forming a first base layer by the first-time poured concrete with the first strength and the second-time poured concrete with the first strength.
3. The method of claim 1, wherein the step of forming the multi-layer concrete composite prefabricated wall panel,
pour the concrete of first intensity in to the wallboard mould to place the reinforcing bar subassembly on pouring the concrete of first intensity, the reinforcing bar subassembly includes reinforced shaped steel and wire net, reinforced shaped steel with the wire net welding, wherein, the concrete of first intensity that wire net one side was pour towards, the concrete of first intensity that reinforced shaped steel one side was pour dorsad includes:
pouring concrete with first strength into the wallboard mould,
placing a reinforcing steel bar assembly on concrete poured with first strength, wherein the reinforcing steel bar assembly comprises reinforcing steel bars and a steel wire mesh, the reinforcing steel bars are welded with the steel wire mesh, one side of the steel wire mesh faces the concrete poured with the first strength, and one side of the reinforcing steel bars faces away from the concrete poured with the first strength, so that the steel wire mesh is immersed in the concrete poured with the first strength.
4. The method for preparing a multilayer concrete composite prefabricated external wall panel according to claim 1,
before pouring the covering layer into the wallboard mould, the method comprises the following steps:
and a bridge-cut-off membrane shell is arranged on the second base layer around the heat-preservation core layer.
5. The method for preparing the multilayer concrete composite prefabricated external wall panel according to claim 4, further comprising the following steps:
and connecting the bridge cut-off membrane shell and the second base layer by using a rivet.
6. The method for preparing a multilayer concrete composite prefabricated external wall panel according to claim 4,
the inner side of the bridge-cut-off membrane shell faces the second base layer, and fire retardant particles are bonded to the outer side of the bridge-cut-off membrane shell.
7. The method for preparing a multilayer concrete composite prefabricated external wall panel according to claim 1,
the heat preservation sandwich layer includes superimposed flame retardant coating and heat preservation, the flame retardant coating the heat preservation and first basic unit superposes in proper order.
8. The method for preparing a multilayer concrete composite prefabricated external wall panel according to claim 1,
the reinforcing steel bar assembly comprises a hanging piece, the first end of the hanging piece is welded with the reinforcing steel bar, and the second end of the hanging piece extends to the outside of the wallboard mould.
9. The method for preparing a multilayer concrete composite prefabricated external wall panel according to claim 1,
the wallboard die comprises a wallboard outer side die and a door and window hole side die, wherein the door and window hole side die is located in the wallboard outer side die.
10. The method for preparing a multilayer concrete composite prefabricated external wall panel according to claim 1,
the covering layer is glass fiber net polymer anti-crack mortar.
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| CN102248577A (en) * | 2011-02-28 | 2011-11-23 | 唐山北极熊建材有限公司 | Superlight-foamed-cement-based manufacturing process for thermal-insulation bearing wall panel |
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| CN106730486A (en) * | 2016-12-26 | 2017-05-31 | 清华大学 | Active explosion suppression system |
| WO2017219920A1 (en) * | 2016-06-24 | 2017-12-28 | 东南大学 | Building based on large-space structure body and freestanding type external envelope structure, and construction method |
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| CN102251662A (en) * | 2011-02-28 | 2011-11-23 | 唐山北极熊建材有限公司 | Cast-in-place process for ultra light foamed cement-based bearing heat insulation wallboard |
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