CN114164960B - Preparation method of multi-layer concrete composite prefabricated externally-hung wallboard - Google Patents
Preparation method of multi-layer concrete composite prefabricated externally-hung wallboard Download PDFInfo
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- CN114164960B CN114164960B CN202010946772.XA CN202010946772A CN114164960B CN 114164960 B CN114164960 B CN 114164960B CN 202010946772 A CN202010946772 A CN 202010946772A CN 114164960 B CN114164960 B CN 114164960B
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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
Abstract
The embodiment of the application relates to a preparation method of a multi-layer concrete composite prefabricated externally-hung wallboard, relates to the technical field of assembly type buildings, and mainly aims to provide a preparation method of a multi-layer concrete composite prefabricated externally-hung wallboard. The preparation method comprises the following steps: pouring concrete with first strength into the 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; placing a heat preservation core layer into the wallboard mold; pouring concrete with second strength into the wallboard mold, forming a second base layer on the side part of the heat preservation core layer, and positioning at least part of reinforced steel in the second base layer, wherein the first strength is greater than the second strength; and pouring a covering layer into the wallboard die, wherein the covering layer covers the heat insulation core layer and the second base layer, so that the multilayer concrete composite prefabricated externally-hung wallboard with higher strength can be prepared with lower cost, and the marketization is easy to realize.
Description
Technical Field
The embodiment of the application relates to the technical field of assembly type buildings, in particular to a preparation method of a multi-layer concrete composite prefabricated externally hung wallboard.
Background
The design construction of a large number of building outer walls in China is mainly implemented by manually building, plastering, pasting, insulating, decorating and the like on site, the on-site operation is mechanized, the degree of the standardization is low, the material waste is large, the engineering quality is poor, the use and maintenance cost is high, and the like are increasingly outstanding, so that the problems of importance and measures improvement are needed.
High-quality external wall part support is urgently needed for building industrialization and assembly type buildings, and the prefabricated concrete external wall plate part is necessarily preferred for a steel structure system and a reinforced concrete structure system external wall enclosing system, and the expensive high-strength concrete can be selected for preparing the prefabricated concrete external wall plate with high strength requirement at present, but the production cost is high. Alternatively, cheaper low strength concrete is selected for preparation, but the product produced is thicker and heavier. Both prefabricated concrete external wall panels are difficult to realize marketization.
Disclosure of Invention
In view of the above, the embodiment of the application provides a method for preparing a multi-layer concrete composite prefabricated external wall panel, which is mainly used for preparing high-quality multi-layer concrete composite prefabricated external wall panels with high quality and low cost.
In order to achieve the above purpose, the embodiment of the present application mainly provides the following technical solutions:
the embodiment of the application provides a preparation method of a multi-layer concrete composite prefabricated externally hung wallboard, which comprises the following steps:
pouring concrete with first strength into a wallboard die, 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 the concrete with the first strength, which is poured back to the concrete with the first strength;
placing a heat-insulating core layer into the wallboard mould, so that the heat-insulating core material is arranged on the first base layer, and at least part of the reinforced steel is positioned at the side part of the heat-insulating core layer;
pouring concrete with second strength into the wallboard mold, forming a second base layer on the side part of the heat preservation core layer, and positioning at least part of reinforced steel in the second base layer, wherein the first strength is greater than the second strength;
and pouring a covering layer into the wallboard die, wherein the covering layer covers the heat insulation core layer and the second base layer.
The aim and the technical problems of the embodiments of the present application can be further achieved by the following technical measures.
Optionally, the method for preparing the multi-layer concrete composite prefabricated external hanging wallboard includes pouring concrete of a first strength into a wallboard mold, and placing a reinforcing steel bar assembly on the poured concrete of the 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 poured concrete of the first strength, and one side of the reinforcing steel bars faces away from the poured concrete of the first strength, and the method comprises the following steps:
pouring concrete with first strength into the wallboard mould for the first time;
placing a reinforcing steel bar assembly on the concrete 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 with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength;
and pouring the concrete with the first strength into the wallboard mould again, covering the steel wire mesh with the concrete with the first strength poured again, and forming a first base layer by the concrete with the first strength poured again.
Optionally, the method for preparing the multi-layer concrete composite prefabricated external hanging wallboard includes pouring concrete of a first strength into a wallboard mold, and placing a reinforcing steel bar assembly on the poured concrete of the 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 poured concrete of the first strength, and one side of the reinforcing steel bars faces away from the poured concrete of the first strength, and the method comprises the following steps:
pouring concrete of a first strength into the wallboard mold,
placing the reinforcing steel bar assembly on the concrete with the 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 with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength, so that the steel wire mesh is immersed in the concrete with the first strength.
Optionally, the method for preparing the multi-layer concrete composite prefabricated externally hung wallboard comprises the following steps of:
and a bridge-cut-off membrane shell is arranged on the second base layer around the heat insulation core layer.
Optionally, the method for preparing the multi-layer concrete composite prefabricated external wall panel further comprises the following steps:
and connecting the bridge-cut-off membrane shell and the second base layer by using rivets.
Optionally, in the method for preparing the multi-layer concrete composite prefabricated external wall panel, the inner side of the bridge-cut-off film shell faces the second base layer, and fire-retardant particles are bonded on the outer side of the bridge-cut-off film shell.
Optionally, in the foregoing method for preparing a multi-layer concrete composite prefabricated external wall panel, the heat insulation core layer includes a stacked fireproof layer and a heat insulation layer, where the fireproof layer, the heat insulation layer and the first base layer are stacked in sequence.
Optionally, in the method for manufacturing a multi-layer concrete composite prefabricated external wall panel, the reinforcing steel bar assembly includes a hanging piece, a first end of the hanging piece is welded with the reinforcing steel bar, and a second end of the hanging piece extends out of the wall panel mold.
Optionally, in the method for preparing the multi-layer concrete composite prefabricated external wall panel, the wall panel mold includes a wall panel outer side mold and a door and window hole side mold, and the door and window hole side mold is located in the wall panel outer side mold.
Optionally, the preparation method of the multi-layer concrete composite prefabricated external wall panel comprises the step of forming the covering layer by a glass fiber net polymer anti-cracking mortar.
By means of the technical scheme, the preparation method of the multi-layer concrete composite prefabricated externally hung wallboard provided by the technical scheme of the application has at least the following advantages:
in the technical scheme provided by the embodiment of the application, 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, and then the second base layer with low price and low strength is poured, so that at least part of reinforcing steel bar of the reinforcing steel bar assembly is positioned in the second base layer, the first base layer and the second base layer are connected to form an organic combination body, an organism with stable strength can be formed, and compared with the prior art, the multilayer concrete composite prefabricated external wallboard with high strength can be prepared by using lower cost, and the marketization is easy to realize.
The foregoing description is only an overview of the embodiments of the present application, and is presented in terms of the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings, so that the technical means of the embodiments of the present application can be more clearly understood.
Drawings
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 application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram illustrating the steps of a method for manufacturing a multi-layer concrete composite prefabricated external wall panel according to an embodiment of the present application;
fig. 2 is a schematic structural sectional view of a multi-layer concrete composite prefabricated external wall panel prepared by the method for preparing the multi-layer concrete composite prefabricated external wall panel according to the embodiment of the application.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the purpose of the preset embodiment of the application, the following is a detailed description of the specific implementation, structure, characteristics and effects of the preparation method of the multi-layer concrete composite prefabricated externally hung wallboard according to the embodiment of the application with reference to the accompanying drawings and the preferred embodiment. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
Fig. 1 to fig. 2 are schematic views showing an embodiment of a method for preparing a multi-layer concrete composite prefabricated external wall panel according to the present application, referring to fig. 1 to fig. 2, the method for preparing a multi-layer concrete composite prefabricated external wall panel according to the present application includes:
step A, pouring concrete with first strength into a wallboard mold 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, and one side of the reinforcing steel bars 21 faces away from the concrete with the first strength;
specifically, in implementation, in the step of implementing step a, in some embodiments:
first pouring concrete 111 of a first strength into the wallboard mold 100;
placing a reinforcing steel bar assembly 20 on the concrete with the first strength, wherein the reinforcing steel bar assembly 20 comprises reinforcing steel bars 21 and a steel wire mesh 22, and the reinforcing steel bars 21 are welded with the steel wire mesh 22, wherein one side of the steel wire mesh 22 faces the concrete with the first strength, and one side of the reinforcing steel bars 21 faces away from the concrete with the first strength;
the first-strength concrete 112 is poured into the wallboard mold 100 again, the second-poured first-strength concrete covers the steel wire mesh 22, and the first-poured first-strength concrete and the second-poured first-strength concrete form the first base layer 11.
The steel wire mesh 22 can be well embedded in the first base layer 11 by two concrete pouring.
Specifically, in implementation, in the step of implementing step a, in some embodiments: comprising the following steps:
concrete of a first strength is poured into wallboard mold 100,
placing the reinforcing steel bar assembly 20 on the concrete 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 with the first strength, and one side of the reinforcing steel bars 21 faces away from the concrete with the first strength, so that the steel wire mesh 22 is immersed in the concrete with the first strength.
The embodiment of immersing the wire mesh 22 in the concrete of the first strength may be implemented in various ways, for example, for the reinforcing bar assembly 20 having a large weight, the wire mesh 22 is immersed in the concrete of the first strength by itself under its own weight. For a lesser weight reinforcing bar assembly 20, a more accurate deep dipping operation may be achieved by placing a predetermined weight of weight in the reinforcing bar assembly 20.
For the multi-layer concrete composite prefabricated externally hung wallboard needing prefabricated hanging parts, the reinforcing steel bar assembly 20 comprises hanging parts, the first ends of the hanging parts are welded with the reinforcing steel bars 21, the second ends of the hanging parts extend out of the wallboard mold 100, namely, the multi-layer concrete composite prefabricated externally hung wallboard after casting molding is performed to the wallboard mold 100, and the second ends of the hanging parts are exposed and serve as connecting ends of the built structures.
For the preparation of monolithic slab-type multi-layer concrete composite prefabricated cladding panels, the panel mold 100 may include a bottom mold table and a perimeter mold. In the preparation of the window plate type multi-layer concrete composite prefabricated externally hung wallboard, the wallboard mold 100 comprises a wallboard outer side mold and a door and window hole side mold, and the door and window hole side mold is positioned in the wallboard outer side mold.
Wherein, for the compound prefabricated externally hung wallboard of multilayer concrete that intensity is different, in the product of reinforcing the compound prefabricated externally hung wallboard of multilayer concrete, on the one hand, steel wire net 22 still is provided with the reinforcing bar, and the reinforcing bar can weld in steel wire net 22, and its quantity, diameter, mode of arranging are according to specific intensity demand. On the other hand, the reinforcing steel 21 is further provided with reinforcing ribs, and the reinforcing ribs can be welded on the reinforcing 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 loop, such as a rectangular cross section, a triangular cross section, or the like. Alternatively, the cross section of the reinforcing steel 21 may be a split ring, such as a C-shape, or the like. In the cement pouring process, the C-shaped reinforced steel 21 is adopted, and cement can conveniently enter the reinforced steel 21 at the opening part with the opening ring. In some embodiments, in order to enable the hollow reinforcing steel 21 of the multi-layer concrete composite prefabricated externally-hung wallboard to be well poured in the subsequent process, through holes are formed in the plate of the reinforcing steel 21, and in the subsequent pouring, cement outside the hollow reinforcing steel 21 can enter the reinforcing steel 21 through the through holes, so that the yield of products is improved.
B, placing a heat-insulating core layer 30 into the wallboard mold 100, so that the heat-insulating core material is placed on the first base layer 11, and at least part of the reinforced steel 21 is positioned at the side part of the heat-insulating core layer 30;
the heat-insulating core layer 30 may include a heat-insulating layer 32 and a fireproof layer 31, where different core layers are selected according to different requirements, the heat-insulating layer 32 is disposed at the bottom of the filling space, and the fireproof layer 31 and the heat-insulating layer 32 are overlapped, so that the fireproof layer 31, the heat-insulating layer 32 and the first base layer 11 are sequentially overlapped. The insulation layer 32 may be an expandable polystyrene board, an extruded polystyrene heat insulation board, a polyurethane board, or the like, according to different functional requirements. The fireproof layer 31 may be a foamed concrete layer, but is not limited thereto. Of course, the heat insulation core layer 30 may be a combination of two or more kinds, or a combination of two other kinds.
Step C, pouring concrete with second strength into the wallboard mold 100, forming a second base layer 12 on the side part of the heat insulation core layer 30, and positioning at least part of the reinforced 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 C60 concrete, but is not limited thereto.
And D, pouring a cover layer 40 into the wallboard mold 100, wherein the cover layer 40 covers the heat insulation core layer 30 and the second base layer 12.
The cover layer 40 may be a fiberglass mesh polymer anti-crack mortar to achieve long-term integrity of the outer wall, but may be made of other materials to accommodate different functional requirements.
In some embodiments, prior to step D, comprising:
around the insulating core 30, a bridge cut-off film shell 50 is disposed on the second base layer 12.
After the second base layer 12 is provided with the break bridge membrane housing 50, rivets may be used to connect the break bridge membrane housing 50 and the second base layer 12.
The bridge cut-off layer may be in the same plane as the top of the insulation core layer 30, so that the cover body covers the insulation core layer 30 and the bridge cut-off layer. The bridge-cut-off layer and the top of the heat-insulating core layer 30 form a bridge-cut-off layer, and the bottom layer and the covering layer 40 realize bridge-cut-off, so that the heat-insulating function of the multi-layer concrete composite prefabricated externally-hung wallboard can be effectively improved.
The bridge-cut-off layer may be implemented in different structural forms, and the embodiments of the present application are described in the following embodiments, but are not limited thereto.
Embodiment one: the bridge cut-off layer comprises a model shell, aerogel is filled in the inner side of the model shell and covered on the top of the second base layer 12, and the aerogel is covered between the model shell and the second base layer 12.
Embodiment two: the bridge-cut-off layer is hollow bridge-cut-off casing, the bridge-cut-off casing set up in the top of second basic unit 12, the cavity of bridge-cut-off casing is broken off second basic unit 12 and lid bridge.
In the embodiment in which the heat-insulating layer 32 and the fireproof layer 31 are disposed in the heat-insulating core layer 30, the inner side of the bridge-cut-off layer is disposed 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 with resin adhesive, wherein the fire-retardant particles can be coarse sand grains, and the particle size of the coarse sand grains can be 2-8mm. The fire-retardant particles can be fire-resistant plastic particles, and the particle size of the fire-resistant plastic particles can be 2-8mm. The coarse sand grains are in the same plane as the fire-resistant layer 31 and may form an integral fire-resistant layer 31.
The material of the covering layer 40 may be set according to the need, for example, it may be a mortar surface layer, for example, a glass fiber net reinforced polymer anti-crack mortar surface layer, so as to achieve higher strength. In the preparation process, in order to facilitate the preparation of the mortar surface layer, the first side wall of the bridge-cut layer is in conflict with the heat preservation core layer 30, the second side wall of the bridge-cut layer is exposed, the first side wall of the bridge-cut layer is opposite to the second side wall of the bridge-cut layer, the second side wall of the bridge-cut layer is opposite to the second base layer 12, the grid blocking walls extend, and after the mortar is distributed on the heat preservation core layer 30 and the bridge-cut layer, the covering layer 40 prepared by the mortar is arranged between the grid blocking walls of the bridge-cut layers on two sides.
In the technical scheme provided by the embodiment of the application, 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, and then the second base layer with low price and low strength is poured, so that at least part of reinforcing steel bar of the reinforcing steel bar assembly is positioned in the second base layer, the first base layer and the second base layer are connected to form an organic combination body, an organism with stable strength can be formed, and compared with the prior art, the multilayer concrete composite prefabricated external wallboard with high strength can be prepared by using lower cost, and the marketization is easy to realize.
The multi-layer concrete composite prefabricated external wall board is made of steel wire nets and concrete, the thickness of an inner core sandwich insulation core layer can be 60-100 mm, the total thickness of the multi-layer concrete composite prefabricated external wall board is 160-200 mm, the multi-layer concrete composite prefabricated external wall board can be welded with reinforced steel through a hanging piece to form a frame structure, the reinforced concrete shear wall structure plays roles of decoration, heat preservation, fire prevention, water prevention and enclosure for the whole building, flexible connection is adopted between boards, and the boards and the main structure are connected to cooperatively deform, so that the boards meet the requirement of anti-seismic function in the whole building. The wallboard has the characteristics of simple and convenient production process, light weight, reasonable structure, convenient transportation, on-site hoisting and convenient and quick installation, and integration of decoration, heat preservation, fire prevention, water prevention, enclosure and durability. The panel is in industrial production, the outline dimension is accurate, flat and compact, only caulking treatment is carried out between the panels after the panels are installed, secondary plastering decoration treatment is not needed on the surfaces of the panels, manpower and material resources are greatly saved, and the comprehensive manufacturing cost of the panels is saved by 100-200 yuan per square meter compared with other existing external wall panels.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the apparatus described above may be referred to with respect to each other. In addition, the "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent the merits and merits of the embodiments.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application 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 application, various features of the application 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 as reflecting the intention of: i.e., the claimed application 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 application.
Those skilled in the art will appreciate that the components of the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The components of the embodiments may be combined into one component, and furthermore 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 elements 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 but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination. Various component embodiments of the present application may be implemented in hardware, or in a combination thereof.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, 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 assembly does not exclude the presence of a plurality of such components or assemblies. The application 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 of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
The above description is only of the preferred embodiments of the present application, and is not intended to limit the present application in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present application still fall within the scope of the technical solution of the present application.
Claims (7)
1. The preparation method of the multi-layer concrete composite prefabricated externally hung wallboard is characterized by comprising the following steps of:
pouring concrete with first strength into a wallboard die, 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 the concrete with the first strength, which is poured back to the concrete with the first strength;
placing a heat-insulating core layer in a wallboard die, so that the heat-insulating core layer is arranged on the first base layer, at least part of reinforced steel is positioned on the side part of the heat-insulating core layer, the heat-insulating core layer comprises a fireproof layer and a heat-insulating layer which are overlapped, and the fireproof layer, the heat-insulating layer and the first base layer are overlapped in sequence;
pouring concrete with second strength into the wallboard mold, forming a second base layer on the side part of the heat preservation core layer, and positioning at least part of reinforced steel in the second base layer, wherein the first strength is greater than the second strength;
pouring a covering layer into the wallboard mould, wherein the covering layer covers the heat-insulating core layer and the second base layer;
wherein, before pouring the overburden into wallboard mould includes:
a bridge-cut-off film shell is arranged around the heat-insulating core layer on the second base layer;
the bridge-cut-off membrane shell comprises a model shell, aerogel is filled in the inner side of the model shell and covered on the top of the second base layer, and the aerogel is covered between the model shell and the second base layer; or (b)
The bridge-cutoff membrane shell is a hollow bridge-cutoff shell, the bridge-cutoff shell is arranged at the top of the second base layer, and the hollow part of the bridge-cutoff shell cuts off the bridge between the second base layer and the covering layer;
the inside of bridge cut-off membrane shell set up in the top of second basic unit, the outside of bridge cut-off membrane shell is provided with the fire-retardant granule of resin adhesive, the fire-retardant granule is coarse sand grain or fire-resistant plastic granule, coarse sand grain with the flame retardant coating is in the coplanar.
2. The method for producing a multi-layered concrete composite prefabricated external wall panel according to claim 1, wherein,
pouring concrete of first intensity into wallboard mould to place reinforcing bar subassembly on pouring concrete of first intensity, reinforcing bar subassembly includes reinforcing steel and wire net, reinforcing steel with the wire net welding, wherein, wire net one side is towards the concrete of first intensity of pouring, reinforcing steel one side is concrete of first intensity of pouring dorsad, include:
pouring concrete with first strength into the wallboard mould for the first time;
placing a reinforcing steel bar assembly on the concrete 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 with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength;
and pouring the concrete with the first strength into the wallboard mould again, covering the steel wire mesh with the concrete with the first strength poured again, and forming a first base layer by the concrete with the first strength poured again.
3. The method for producing a multi-layered concrete composite prefabricated external wall panel according to claim 1, wherein,
pouring concrete of first intensity into wallboard mould to place reinforcing bar subassembly on pouring concrete of first intensity, reinforcing bar subassembly includes reinforcing steel and wire net, reinforcing steel with the wire net welding, wherein, wire net one side is towards the concrete of first intensity of pouring, reinforcing steel one side is concrete of first intensity of pouring dorsad, include:
pouring concrete of a first strength into the wallboard mold,
placing the reinforcing steel bar assembly on the concrete with the 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 with the first strength, and one side of the reinforcing steel bars faces away from the concrete with the first strength, so that the steel wire mesh is immersed in the concrete with the first strength.
4. The method of making a multi-layer concrete composite prefabricated cladding panel according to claim 1, further comprising:
and connecting the bridge-cut-off membrane shell and the second base layer by using rivets.
5. The method for preparing the multi-layer concrete composite prefabricated externally hung wallboard according to claim 1, wherein,
the reinforcing steel bar assembly comprises a hanging piece, a first end of the hanging piece is welded with the reinforcing steel bar, and a second end of the hanging piece extends out of the wallboard die.
6. The method for preparing the multi-layer concrete composite prefabricated externally hung wallboard according to claim 1, wherein,
the wallboard die comprises a wallboard outer side die and a door and window hole side die, and the door and window hole side die is located in the wallboard outer side die.
7. The method for preparing the multi-layer concrete composite prefabricated externally hung wallboard according to claim 1, wherein,
the covering layer is glass fiber net polymer anti-cracking mortar.
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