CN209277334U - A kind of prefabricated combined assembled insulation construction integrated wallboard - Google Patents

A kind of prefabricated combined assembled insulation construction integrated wallboard Download PDF

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Publication number
CN209277334U
CN209277334U CN201821152820.2U CN201821152820U CN209277334U CN 209277334 U CN209277334 U CN 209277334U CN 201821152820 U CN201821152820 U CN 201821152820U CN 209277334 U CN209277334 U CN 209277334U
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concrete slab
layer
aerated concrete
autoclaved aerated
outside
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陈一全
李岩
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陈一全
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/24Structural elements or technologies for improving thermal insulation
    • Y02A30/244Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires

Abstract

The utility model provides a kind of prefabricated combined assembled insulation construction integrated wallboard, including the compound light gauge steel structure of thermal insulation materials, waterproof ventilated membrane, the inside autoclaved aerated concrete slab such as protective layer, outside autoclaved aerated concrete slab, asbestos-free calcium silicate board or fibre cement plate, rock wool or glue powder polyphenyl particle slurry etc..Wherein, interior outside autoclaved aerated concrete slab is reliably connected respectively with intermediate light gauge steel structure by welding, bolt or self drilling tapping screw mode as entirety and built-in heat insulation layer, and the preparation processes such as is combined by prefabrication production and building-site secondary assembling and formed sandwich compound insulation structure wallboard.Simple structure, it is easy to make, it is at low cost, it can be achieved that the prefabricated plant produced of pipeline system;It the light high-strength, transporting and hoisting of wallboard and is quickly and expediently installed, heat preservation and anti-seismic performance are good, integrate external wall body thermal insulation, fire prevention and structure safety, realize combined wall board component and main structure and use with the service life.

Description

A kind of prefabricated combined assembled insulation construction integrated wallboard
Technical field
The utility model relates to building fields, more particularly to a kind of prefabricated combined assembled insulation construction integrated wallboard.
Background technique
With the continuous improvement of China's energy for building and cost of labor, assembled architecture is by governments at all levels and society in recent years Meeting all circles more and more pay close attention to, and a series of encouragement and support policy have also been formulated on State-level.Other than main structure, Building " three plates " is the preferred means of assembled technology, wherein be most difficult to capture is then prefabricated exterior wall plate technique.It builds Build exterior wall have both wall go along with sb. to guard him, keep the temperature, preventing fires, the multiple functions such as wind resistance, while bearing self weight, wind load, geological process, temperature The various load effects such as effect influence the stiffness contribution of main structure also very important.Particularly with severe cold and cold ground For the external wall in area, the performances such as watertightness, air-tightness, sound insulation, fire prevention, heat preservation are indispensable, directly influence interior The hot comfort of environment and inhabitation, life, operating condition.
There are mainly three types of forms for assembled architecture outer wall construction at present.First is that base's exterior wall uses prefabricated assembled steaming Pressing aero-concrete plate, then outer wall heat insulating energy saving is realized using exterior insulation or exterior wall insulating temperature technique.Advantage is to realize The prefabrication and assembly construction and exterior-wall heat insulation of Side fascia, the disadvantage is that the service life of external thermal insulation is only 25 years, the use with base course wall Service life is asynchronous, and thermal insulation material be B grades of materials when, need to add fire-blocking belt at every layer and fire integrity be not less than The fireproof window of 0.50h.Second is that directlying adopt the sandwich thermal insulated structural wall board of " sandwich " formula heavy, i.e. medial and lateral are respectively adopted not Armored concrete protective layer lower than 50mm, centre are organic or inorganic heat insulation core material.Advantage is to realize wall and heat preservation together Service life and prefabricated assembled construction, the disadvantage is that self weight is larger, on-site hoisting is more difficult, and installation is inefficient.Third is that directly Use " sandwich " formula light sandwich insulation construction wallboard is connect, unlike the former heavy structural wall board, internal core material is compound Steel keel structure body is simultaneously all made of A grades of thermal insulation materials, each compound one layer of calcium silicate board in medial and lateral or fibre cement plate, excellent Point is the requirement that material combustion performance when having catered to as external wall is A grades, no setting is required fire-blocking belt with meet it is resistance to Fiery integrality is not less than the fireproof window of 0.50h, and wall light is high-strength, the disadvantage is that base course wall is light material, Winter protection Performance can satisfy requirement, but the heat-proof quality of its summer is poor, and the fire endurance of its combined wall may not meet design and want It asks.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of prefabricated combined assembled insulation construction integration walls Plate, with solve the problems, such as in background technique the same service life of wall and main structure using, overcome wall to go along with sb. to guard him, keep the temperature, it is heat-insulated with it is anti- Contradiction between fire.
The utility model is achieved by the following technical solution:
The utility model provides a kind of prefabricated combined assembled insulation construction integrated wallboard, including what is be fixedly connected sequentially Protective layer, outside autoclaved aerated concrete slab layer, insulating layer, inside autoclaved aerated concrete slab layer, it is compound in the insulating layer There is lightgage steel joist, the both ends of the lightgage steel joist add with the outside autoclaved aerated concrete slab layer and the inside steam pressure respectively Gas Concrete cover is fixedly connected.
Preferably, the lightgage steel joist is thin-walled C-shaped steel, square steel or the angle steel Jing Guo antiseptic and rustproof processing, and wall thickness is not low In 2.0mm, strength classes of structural steel is not less than Q235B.
Preferably, asbestos-free calcium silicate board is fixed between the insulating layer and the outside autoclaved aerated concrete slab layer Or Cement fibre plate, waterproof ventilated membrane is fixed between the insulating layer and the inside autoclaved aerated concrete slab layer.
Preferably, it is fixed with waterproof ventilated membrane between the insulating layer and the outside autoclaved aerated concrete slab layer, institute It states and is fixed with asbestos-free calcium silicate board or Cement fibre plate between insulating layer and the inside autoclaved aerated concrete slab layer.
Preferably, the asbestos-free calcium silicate board or Cement fibre plate with a thickness of 6-12mm.
Preferably, the protective layer is the compound alkali-resistant glass fiber mesh protective layer of anticracking grout of 3-5mm thickness.
Preferably, the outside autoclaved aerated concrete slab layer and the inside autoclaved aerated concrete slab layer are 50- Autoclaved aerated concrete slab of the 100mm thickness through interface processing.
Preferably, rock wool, glue powder polyphenyl particle slurry or extruded sheet heat insulation core material layer.
Technical solution provided by the embodiment of the utility model may include it is following the utility model has the advantages that
(1) functions such as the going along with sb. to guard him of wall, insulation and fire prevention are realized in one, using internal lightgage steel joist as wall Structural body bears wallboard self weight, wind load, geological process, temperature action etc., wall light is high-strength, belongs to and promotes and applies at present Building heat preservation and structure-integrated technology.
(2) wall synchronous can realize the design requirement for being not less than 50 years service life with main structure.Because wall by Power structure is internal light gauge steel structure body, is connect by being reliably connected technology with main structure, other building materials of wallboard It is additional in light gauge steel structure body as attached self weight, panel structure stress defines, connection can between wallboard and main structure Lean on, main structure ensures safety by structure design, therefore the connection of panel structure, wallboard and main body and main structure three it Between structural elements security level be it is the same, be different from traditional outside wall heat preservation and inside holding technology.
(3) material super quality and competitive price, wall light are high-strength.Using autoclaved aerated concrete slab as wall periphery protective material, And composite light efficient thermal insulation material, using light gauge steel structure body as stress frame, realize a variety of materials construct it is compound Resource utilization often uses assembled plate in particular by the engineering of super quality and competitive price --- and autoclaved aerated concrete slab (is commonly called as ALC plate), it has given full play to the performance advantage of a variety of materials and has drawn materials the advantages that economic, reduced material cost.It alleviates simultaneously Wall self weight, reduces project cost, thickness is about that wall self-insulation design requirement can be realized in 180-250mm.
(4) batch production Prefabrication is simple, and in-site installation is efficient and convenient, improves production and construction efficiency.Prefabricated steaming Pressing aero-concrete plate is not only cheap, and materials are convenient, can directly outsourcing use.Light gauge steel structure body can directly adopt By the thin-walled lightweight section component of antirust treatment, using welding, being bolted or the techniques such as self drilling tapping screw connection, hold very much Easily be prefabricated in the factory production.The burning behavior class of thermal insulation material can be A grades, can also be B grades, super quality and competitive price are convenient to take on the spot Material and processing, these material contextures combined wall board of high-strength light, greatly facilitate assembled mechanized construction and peace Dress, improves production and construction efficiency.
(5) its production preparation main feature and process characteristic had both played the advantage of Prefabrication, and also adaptation to local conditions embodies Field-installed flexibility characteristics, are mainly reflected in, and are first prefabricated in the factory and produce the light gauge steel structure body of wall outer side, protect Warm core material and outer protective construction, then the autoclaved aerated concrete slab on the inside of building-site combined wall, it is then that outside is prefabricated Component is reliably connected with the field erected plate in inside.Prefabrication produces the work combined with building-site construction and installation in this way Skill prepares feature and strengthens the overall security and overall work of wallboard itself so that wallboard is more convenient for connecting with main structure Performance overcomes the discreteness of various different configuration materials.
(6) fire-blocking belt can not be separately arranged in wall and satisfaction is not less than the door and window of 0.50h fire integrity demands i.e. It may conform to applicable fire design requirement, realize energy conservation and fireproof technical advantage.
(7) combined wall is efficiently avoided because of indoor and outdoor temperature close to the waterproof ventilated membrane of thermal insulation material setting in wall On the inside of wall caused by difference acts on phenomena such as moisture condensation, the infiltration of outside moisture can be prevented, also ensures wall internal steam Free flow, improve wall structure.
Detailed description of the invention
Illustrate the utility model embodiment or technical solution in the prior art in order to clearer, it below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it is clear that, to those skilled in the art, Without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structure of the prefabricated combined assembled insulation construction integrated wallboard of one kind provided by the embodiment of the utility model Schematic diagram.
Fig. 2 is the knot of the prefabricated combined assembled insulation construction integrated wallboard of another kind provided by the embodiment of the utility model Structure schematic diagram.
It is as shown in the figure: insulating layer 1, outside autoclaved aerated concrete slab layer 2, asbestos-free calcium silicate board or Cement fibre plate 3, insulating layer 4, bolt 5, inside autoclaved aerated concrete slab layer 6, lightgage steel joist 7.
Specific embodiment
As described in background technique, for the deficiency in existing three kinds of assembling type outer wall skills construction and engineer application And drawback, it is not difficult to find out that, A grade combustibility, wall fire resisting and the fire prevention of wall structure material and wall thermal insulating is heat-insulated is The key point of prefabricated assembled wall.For the deficiency and disadvantage in the structural form and engineer application of the above precast facade, And the factors such as economic cost benefit for combining wall materials, the application provide a kind of prefabricated combined assembled insulation construction integration Wallboard.
Prefabricated combined assembled insulation construction integrated wallboard provided by the present application, construction include protective layer 1, outside steaming Pressing aero-concrete plate layer 2, asbestos-free calcium silicate board or fibre cement plate 3, insulating layer 4, waterproof ventilated membrane, inside steam pressure add Gas concrete slab etc..Wherein, insulating layer 4 is that the thermal insulation materials such as rock wool, glue powder polyphenyl particle slurry or extruded sheet (XPS plate) are compound The structure of lightgage steel joist 7, interior outside autoclaved aerated concrete slab is respectively with intermediate light gauge steel structure by welding, being bolted Or the modes such as self drilling tapping screw connection are reliably connected as entirety and built-in heat insulation layer, formation have both go along with sb. to guard him, insulation and anti- The sandwich compound insulation structure wallboard of fiery function.It solves the problems, such as that the same service life of wall and main structure uses, improves production With construction and installation efficiency, overcome wall go along with sb. to guard him, keep the temperature, it is heat-insulated fire prevention between contradiction, simplify production process, wall Simple structure, connect with main structure and power transmission is clear.
It, below will be practical to this in order to make those skilled in the art more fully understand the technical solution in the utility model Technical solution in new embodiment is clearly and completely described, it is clear that described embodiment is only the utility model A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having Every other embodiment obtained under the premise of creative work is made, the protection scope of the utility model all should belong to.
Referring to Fig. 1, it show the prefabricated combined assembled insulation construction integrated wallboard of one kind provided by the utility model Structural schematic diagram.
As shown in Figure 1, in prefabricated combined assembled insulation construction integrated wallboard provided in this embodiment, including by outside extremely The outside steaming of the compound alkali-resistant glass fiber mesh protective layer 1 of 3-5mm thickness anticracking grout, 50mm thickness through interface processing being inside fixedly connected sequentially Pressing aero-concrete plate 2,8mm thickness in density asbestos-free calcium silicate board or without asbestos cement fiber plate 3,120mm thickness rock wool protect The compound light gauge steel structure 7 of warm core layer 4, the steam pressurized coagulation in the inside of waterproof ventilated membrane and 50mm thickness through interface processing Native plate 6;Wherein autoclaved aerated concrete slab 6 is light with centre respectively on the inside of the thick outside autoclaved aerated concrete slab 2 and 50mm of 50mm Steel keel structure 7 is reliably connected by bolt 5 as entirety and built-in heat insulation layer, the sandwich of formation thickness of wall body about 220-240mm Compound insulation structure wallboard.
Wherein, the light gauge steel structure 7 be the wall thickness such as thin-walled C-shaped steel, square steel, angle steel Jing Guo antiseptic and rustproof processing not Weather resistant structural steel lower than 2.0mm passes through the force structure body being welded to form, and is also possible to be bolted or self-drilling self-tapping The force structure body that the modes such as connection form, strength classes of structural steel are not less than Q235B.Light gauge steel structure include column, crossbeam, The force structures component such as diagonal brace, with the thick outside autoclaved aerated concrete slab 2 of 50mm and the thick inside steam-pressing aero-concrete of 50mm Plate 6 is reliably connected by bolt, and light gauge steel structure bears the prefabricated combined assembled insulation construction integrated wallboard and transmits Internal force.
The light gauge steel structure 7 is compounded in the prefabricated combined assembled heat preservation with 120mm thickness rock wool heat-preservation core layer 4 The middle position of structure-integrated wallboard, and supporting and fixing is served to 120mm thickness rock wool heat-preservation core layer 4, collectively form institute State the sandwich structure layer of prefabricated combined assembled insulation construction integrated wallboard.
Prefabricated combined assembled insulation construction integrated wallboard provided in this embodiment is prepared by the following method to obtain:
Step 1 carries out interface processing to the thick outside autoclaved aerated concrete slab 2 of prefabricated 50mm, and boundary is respectively brushed in medial and lateral Surface treatment agent is together;
Step 2 bonds compound one layer of 8mm thickness without asbestos silicon after laying flat the thick outside autoclaved aerated concrete slab 2 of 50mm Sour calcium plate or without asbestos cement fiber plate 3;
The light gauge steel structure 7 of prefabricated processing is put in 8mm thickness asbestos-free calcium silicate board or without asbestos cement fibre by step 3 It ties up on plate 3, and is reliably fixed using bolt 5 with outside autoclaved aerated concrete slab 2;
Step 4, the compound 120mm thickness rock wool heat-preservation core layer 4 in light gauge steel structure 7;
Step 5 completely covers one of waterproof ventilated membrane in 120mm thickness rock wool heat-preservation core layer 4;
Step 6, to above each layer construction it is compound after, in thick prefabricated 2 outside of outside autoclaved aerated concrete slab 50mm It smears 3-5mm thickness anticracking grout together and compound alkali-resistant glass fiber mesh is as the prefabricated combined assembled insulation construction integrated wallboard Protective layer 1, constitute precast assembly component;
Step 7 by precast assembly component conveying to Construction of Engineering Projects scene, and is reliably mounted and fixed to main body knot After on structure, using bolt, self drilling tapping screw 5 etc. by the thick prefabricated autoclaved aerated concrete slab 6 of 50mm and precast assembly component 10 It is combined into a thickness of 50+8+120+50=228mm globality wallboard;
Step 8 carries out exterior finish to the prefabricated combined assembled insulation construction integrated wallboard and interior Decorative Construction is made Industry.
When prefabricated combined assembled insulation construction integrated wallboard provided by the present application makes, main feature and technique are special Point is first be prefabricated in the factory the light gauge steel structure body for producing wall outer side, heat insulation core material and outer protective construction, then in building site Autoclaved aerated concrete slab on the inside of live combined wall, it is then that outside prefabricated components and the field erected plate in inside are reliable Connection, had both played the advantage of Prefabrication, also adaptation to local conditions embodies field-installed flexibility characteristics.
Referring to fig. 2, it show the prefabricated combined assembled insulation construction integrated wallboard of another kind provided by the utility model Structural schematic diagram.
As shown in Figure 2, prefabricated combined assembled insulation construction integrated wallboard provided in this embodiment includes from outside to inside The compound alkali-resistant glass fiber mesh protective layer 1 of 3-5mm thickness anticracking grout that is fixedly connected sequentially, outside steam pressure of the 75mm thickness through interface processing Aerated concrete panel 2, waterproof ventilated membrane, the compound light gauge steel structure 7 of 65mm thickness XPS heat insulation core material layer 4,8mm thickness are without asbestos silicon The inside autoclaved aerated concrete slab 6 of sour calcium plate or Cement fibre plate 3 and 50mm thickness through interface processing;The wherein thick outside 75mm Autoclaved aerated concrete slab 2 and the thick inside autoclaved aerated concrete slab 6 of 50mm pass through with intermediate light gauge steel structure 7 respectively to be bored certainly Tapping screw is reliably connected as entirety and built-in heat insulation layer, and forming thickness is about 200mm (75+65+8+50=198mm ≈ Sandwich compound insulation structure wallboard 200mm).
The light gauge steel structure 7 is that the wall thickness such as thin-walled C-shaped steel, square steel, angle steel Jing Guo antiseptic and rustproof processing are not less than The force structure body of composition is bolted in the weather resistant structural steel of 2.0mm, is also possible to the side such as welding or self-drilling self-tapping connection The force structure body of formula composition, strength classes of structural steel are not less than Q235B.Light gauge steel structure include column, crossbeam, diagonal brace etc. by Power structural elements passes through with 75mm thickness outside autoclaved aerated concrete slab 2 and the thick inside autoclaved aerated concrete slab 6 of 50mm and bores certainly Tapping screw is reliably connected, light gauge steel structure bear the prefabricated combined assembled insulation construction integrated wallboard transmit it is interior Power.The light gauge steel structure 7 is compounded in the prefabricated combined assembled insulation construction one with 65mm thickness XPS heat insulation core material layer 4 The middle position of body wallboard, and supporting and fixing is served to 65mm thickness XPS heat insulation core material layer 4, it collectively forms described prefabricated multiple Close the sandwich structure layer of assembled insulation construction integrated wallboard.
Prefabricated combined assembled insulation construction integrated wallboard provided in this embodiment is prepared by the following method to obtain:
Step 1 carries out interface processing to the thick outside autoclaved aerated concrete slab 2 of prefabricated 75mm, and boundary is respectively brushed in medial and lateral Surface treatment agent is together;
Step 2, after the thick outside autoclaved aerated concrete slab 2 of 75mm is laid flat, by the light gauge steel structure 7 of prefabricated processing It is put on the thick outside autoclaved aerated concrete slab 2 of 75mm and is added using bolt, self drilling tapping screw 5 etc. and the thick outside steam pressure of 75mm Gas concrete slab 2 is reliably fixed;
Step 3 completely covers one of waterproof ventilated membrane on autoclaved aerated concrete slab 2 on the outside;The layer can also be not provided with;
Step 4, the compound 65mm thickness XPS heat insulation core material layer 4 in light gauge steel structure 7;
Step 5 bonds compound one layer of 8mm thickness asbestos-free calcium silicate board or without stone on 65mm thickness XPS heat insulation core material layer 4 Cotton Cement fibre plate 3;
Step 6, to above each layer construction it is compound after, 2 outside of autoclaved aerated concrete slab on the outside of prefabricated 75mm thickness It smears 3~5mm thickness anticracking grout together and compound alkali-resistant glass fiber mesh is as the prefabricated combined assembled insulation construction integration wall The protective layer 1 of plate constitutes precast assembly component;
Step 7 by precast assembly component conveying to Construction of Engineering Projects scene, and is reliably mounted and fixed to main body knot After on structure, use self drilling tapping screw 5 that prefabricated outside autoclaved aerated concrete slab 2 is thick for wall with precast assembly component composition Spend the globality wallboard of about 200mm (75+65+8+50=198mm ≈ 200mm) thickness;
Step 8 carries out exterior finish to the prefabricated combined assembled insulation construction integrated wallboard and interior Decorative Construction is made Industry.
Certainly, above description is also not limited to the example above, and technical characteristic of the utility model without description can lead to It crosses or realizes that details are not described herein using the prior art;Above embodiments are merely to illustrate the technical solution of the utility model simultaneously Non- is limitations of the present invention, and the utility model is described in detail referring to preferred embodiment, this field It is to be appreciated by one skilled in the art that those skilled in the art were made in the essential scope of the utility model Variations, modifications, additions or substitutions also should belong to the claim protection of the utility model without departure from the objective of the utility model Range.

Claims (6)

1. a kind of prefabricated combined assembled insulation construction integrated wallboard, which is characterized in that including the protection being fixedly connected sequentially Layer (1), outside autoclaved aerated concrete slab layer (2), insulating layer (4), inside autoclaved aerated concrete slab layer (6), the heat preservation Layer (4) in is compounded with lightgage steel joist (7), the both ends of the lightgage steel joist (7) respectively with the outside autoclaved aerated concrete slab Layer (2) is fixedly connected with the inside autoclaved aerated concrete slab layer (6);
The lightgage steel joist (7) is thin-walled C-shaped steel, square steel or the angle steel Jing Guo antiseptic and rustproof processing, and wall thickness is not less than 2.0mm, Strength classes of structural steel is not less than Q235B;
Asbestos-free calcium silicate board or water are fixed between the insulating layer (4) and the outside autoclaved aerated concrete slab layer (2) Mud fiber plate (3);
Waterproof ventilated membrane is fixed between the insulating layer (4) and the inside autoclaved aerated concrete slab layer (6);
Waterproof ventilated membrane is fixed between the insulating layer (4) and the outside autoclaved aerated concrete slab layer (2).
2. the prefabricated combined assembled insulation construction integrated wallboard of one kind according to claim 1, which is characterized in that described It is fixed with asbestos-free calcium silicate board between insulating layer (4) and the inside autoclaved aerated concrete slab layer (6) or Cement fibre is flat Plate (3).
3. the prefabricated combined assembled insulation construction integrated wallboard of one kind according to claim 2, which is characterized in that described Asbestos-free calcium silicate board or Cement fibre plate (3) with a thickness of 6-12mm.
4. the prefabricated combined assembled insulation construction integrated wallboard of one kind according to claim 1-3, feature It is, the protective layer (1) is the compound alkali-resistant glass fiber mesh protective layer of anticracking grout of 3-5mm thickness.
5. the prefabricated combined assembled insulation construction integrated wallboard of one kind according to claim 1-3, feature It is, the outside autoclaved aerated concrete slab layer (2) and the inside autoclaved aerated concrete slab layer (6) are 50-100mm The thick autoclaved aerated concrete slab through interface processing.
6. the prefabricated combined assembled insulation construction integrated wallboard of one kind according to claim 1-3, feature It is, the insulating layer (4) is rock wool, glue powder polyphenyl particle slurry or extruded sheet heat insulation core material layer.
CN201821152820.2U 2018-07-20 2018-07-20 A kind of prefabricated combined assembled insulation construction integrated wallboard Active CN209277334U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110886407A (en) * 2019-12-15 2020-03-17 张影 Sound insulation and heat preservation structure for residential buildings with steel structures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110886407A (en) * 2019-12-15 2020-03-17 张影 Sound insulation and heat preservation structure for residential buildings with steel structures

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