CN114102848A - Manufacturing method of precast concrete PC hollow wallboard and hollow wallboard - Google Patents
Manufacturing method of precast concrete PC hollow wallboard and hollow wallboard Download PDFInfo
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- CN114102848A CN114102848A CN202111306941.4A CN202111306941A CN114102848A CN 114102848 A CN114102848 A CN 114102848A CN 202111306941 A CN202111306941 A CN 202111306941A CN 114102848 A CN114102848 A CN 114102848A
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- Prior art keywords
- hollow
- air bag
- steel reinforcement
- concrete
- wall panel
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Classifications
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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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- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
- B28B7/32—Cores; Mandrels adjustable, collapsible, or expanding inflatable
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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
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
-
- 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
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- 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
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
The invention discloses a method for manufacturing a precast concrete PC hollow wallboard and the hollow wallboard, wherein the method for manufacturing the hollow wallboard comprises the following steps: building a steel bar framework; arranging a plurality of air bags in the steel reinforcement framework; sealing the periphery of the steel reinforcement framework, and pouring concrete; and (4) deflating the air bag, taking out the air bag, filling the air bag, and taking out the air bag to form a hollow wallboard by a gap left on the outer side. According to the manufacturing method of the hollow wallboard disclosed by the embodiment of the invention, in the production process of the hollow wallboard, the air bag is arranged in the steel reinforcement framework, so that the quantity of concrete consumed by the hollow wallboard in the production process is reduced, the weight of the hollow wallboard can be reduced, the torsion resistance and the shock resistance are improved, the heat preservation and the sound insulation are realized, and the production cost of the hollow wallboard is reduced. Meanwhile, the transportation of the hollow wallboard is more convenient due to the light weight reduction, so that the transportation cost of the hollow wallboard is reduced.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a method for manufacturing a precast concrete PC hollow wallboard.
Background
In the prior art, the wall boards are often used in the building process to support the enclosure and the internal partition structure of the building, so that the building has higher structural strength and service performance. In the related art, in order to make the wall panel have high structural strength, the thickness of the wall panel is generally increased, which may cause the wall panel to have excessive weight, affect the production and construction of the house structure, and increase the production cost of the wall panel. Meanwhile, the wallboard with larger weight is not beneficial to transportation, and the transportation cost can be increased.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a method for manufacturing a hollow wall panel, which has a light weight, a low production cost, a high structural strength, improved torsion and earthquake resistance, and thermal and sound insulation properties.
The manufacturing method of the hollow wallboard comprises the following steps:
building a steel bar framework;
arranging a plurality of air bags in the steel reinforcement framework;
sealing the periphery of the steel reinforcement framework, and pouring concrete;
and (4) deflating the air bag and taking out the air bag, and filling a gap left on the outer side of the air bag after the air bag is drawn out to form the hollow wallboard.
According to the manufacturing method of the hollow wallboard 1 disclosed by the embodiment of the invention, in the production process of the hollow wallboard, the air bags are arranged in the steel reinforcement framework, so that the quantity of concrete consumed by the hollow wallboard in the production process is reduced, the weight of the hollow wallboard can be reduced, the torsion resistance and the shock resistance are improved, the heat preservation and the sound insulation are realized, and the production cost of the hollow wallboard is reduced. Meanwhile, the transportation of the hollow wallboard is more convenient due to the light weight reduction, so that the transportation cost of the hollow wallboard is reduced.
In some embodiments, the step of arranging a plurality of air cells within the rebar grid comprises:
arranging a plurality of uninflated air bags in the steel reinforcement framework in sequence;
inflating a plurality of said air cells.
In some embodiments, said step of inflating a plurality of said balloons comprises:
inflating a plurality of said balloons into a hollow tubular shape.
In some embodiments, in the step of arranging a plurality of uninflated air cells in sequence within the rebar skeleton,
and reserving an inflation inlet of the air bag outside the steel reinforcement framework.
In some embodiments, in the step of pouring concrete around the closed reinforcing cage,
and pouring the concrete without exceeding the inflation port of the air bag.
In some embodiments, in the step of leaving the inflation port of the balloon outside the steel reinforcement cage,
and a bending angle is arranged between the inflation inlet and the air bag, and the inflation inlet faces the outer side of the steel reinforcement framework.
In some embodiments, a bending angle is provided between the inflation port and the air bag, the inflation port faces the outer side of the steel reinforcement framework,
bending the inflation inlet by a preset angle alpha, wherein the alpha satisfies the relation: alpha is more than or equal to 15 degrees and less than or equal to 45 degrees.
In some embodiments, the step of constructing the steel reinforcement cage comprises:
respectively arranging a plurality of reinforcing steel bars in a transverse and longitudinal crossed manner;
and binding the cross points of the transverse reinforcing steel bars and the longitudinal reinforcing steel bars.
In some embodiments, the step of enclosing the periphery of the steel reinforcement cage and pouring concrete comprises:
respectively installing shaping templates around the steel bar framework;
and (5) pouring concrete.
The hollow wallboard provided by the embodiment of the invention adopts the manufacturing method of the hollow wallboard.
According to the hollow wallboard of the embodiment of the invention, the air bag arranged in the reinforcement framework of the precast concrete PC hollow wallboard can reduce the space between the reinforcement ribs by using the manufacturing method to construct the hollow wallboard, so that the use amount of concrete poured in the space is reduced, and the weight and the production cost of the hollow wallboard are reduced. Moreover, install the template outside framework of steel reinforcement and can avoid the outflow of concrete, guarantee that concrete PC wallboard overall dimension accords with the regulation, promote the production efficiency of hollow wallboard.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method of making a hollow shear wall according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of making a hollow shear wall according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a hollow shear wall according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a hollow shear wall of an embodiment of the present invention;
FIG. 5 is a schematic structural view of a hollow shear wall of an embodiment of the present invention;
FIG. 6 is a schematic structural view of a hollow shear wall of an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a hollow shear wall of an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a hollow shear wall of an embodiment of the present invention;
reference numerals:
the hollow wall plate 1 is provided with a hollow wall plate,
the concrete (10) is a mixture of,
the steel reinforcement framework 100, the air bag 200 and the inflation inlet 210.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
A method of making a hollow wall panel 1 according to an embodiment of the invention is described below with reference to fig. 1-8, comprising:
building a steel bar framework 100; it should be noted that in the construction process of the hollow wall panel 1, the steel reinforcement framework 100 is built in a factory, and the steel reinforcement framework 100 can improve the structural strength of the constructed hollow wall panel 1, so that the house structure constructed by the hollow wall panel 1 is more stable and reliable.
Arranging a plurality of air bags 200 in the steel reinforcement framework 100; later arrange a plurality of gasbags 200 in framework of steel reinforcement 100, can let the available space in framework of steel reinforcement 100 reduce to can reduce the quantity of concrete 10 when concreting 10, not only can reduce the weight of hollow wallboard 1, can let the manufacturing cost of hollow wallboard 1 obtain reducing and alleviate cost of transportation moreover.
Sealing the periphery of the steel reinforcement framework 100, and pouring concrete 10; in the process of pouring the concrete 10, the steel reinforcement framework 100 is placed on a fixed platform, the periphery of the steel reinforcement framework is fixed by a shaping template to limit the outflow of the concrete 10, and the surface of the concrete is completely leveled and smoothed in order to form the hollow wallboard 1 after the concrete 10 is solidified.
After the concrete is initially set, the air bag 200 is deflated and withdrawn, filling the gap left after the air bag 200 is withdrawn. In this way, the air bag 200 is cleaned and recycled after being extracted for reuse in the subsequent production of the hollow wall panel 1, so that the production cost of the hollow wall panel 1 is reduced.
According to the manufacturing method of the hollow wallboard 1 disclosed by the embodiment of the invention, in the production process of the hollow wallboard 1, the air bags 200 are arranged in the steel reinforcement framework 100, so that the quantity of concrete 10 consumed in the production process of the hollow wallboard 1 is reduced, the weight of the hollow wallboard 1 can be reduced, the torsion resistance and the earthquake resistance are improved, the heat preservation and the sound insulation are realized, and the production cost of the hollow wallboard 1 is reduced. Meanwhile, the weight is lighter, so that the hollow wallboard 1 is more convenient to transport, and the transport cost of the hollow wallboard 1 is reduced.
In some embodiments, as shown in fig. 2 and 4, the step of arranging a plurality of air cells 200 within the rebar grid 100 comprises: arranging a plurality of uninflated air bags 200 in the steel reinforcement framework 100 in sequence; the plurality of air bags 200 are inflated. It can be understood that arranging the uninflated air bags 200 in the steel reinforcement cage 100 can facilitate the arrangement of the air bags 200, thereby improving the production efficiency of the hollow wall panel 1. Simultaneously, aerify and fix after arranging the reinforcing bar firmware with gasbag 200, can be convenient for aerify of gasbag 200 for hollow wallboard 1's production efficiency obtains promoting.
In some embodiments, as shown in fig. 2, the step of inflating the plurality of bladders 200 includes: the plurality of air cells 200 are inflated in a hollow tubular shape. On the one hand, hollow tubulose gasbag 200 is full of the state of gas for gasbag 200, and the user can be through observing the state change that reachs gasbag 200 to make the use of gasbag 200 obtain simplifying, thereby the production of hollow wallboard 1 of being convenient for, on the other hand, hollow tubulose gasbag 200 can be more convenient arrange the range in steel reinforcement framework 100, thereby make the production of wallboard more convenient, promote hollow wallboard 1's production efficiency.
In some embodiments, as shown in fig. 2 and 7, in the step of arranging a plurality of uninflated air bags 200 in sequence within the steel reinforcement cage 100, the air inflation ports 210 of the air bags 200 are left at the outside of the steel reinforcement cage 100. It can be understood that, with inflation inlet 210 setting in the outside of steel reinforcement framework 100, not only can be convenient for the gassing of aerifing of gasbag 200, the use of gasbag 200 of being convenient for, set up inflation inlet 210 in the outside of steel reinforcement framework 100 can also be convenient for taking out of gasbag 200 moreover to let the production efficiency of hollow wallboard 1 obtain promoting.
In some embodiments, as shown in fig. 2, in the step of casting concrete around the steel reinforcement cage 100, the concrete is cast without exceeding the air inlet 210 of the air bag 200. Thus, the pouring of the concrete 10 is not more than the inflation inlet 210 of the air bag 200, so that the pouring process of the concrete 10 is simpler, and the production efficiency of the hollow wall panel 1 is improved. Meanwhile, after the concrete 10 is poured and formed, the inflation inlet 210 of the air bag 200 is arranged at an interval with the concrete 10, so that the air bag 200 can be deflated more conveniently, and the production efficiency of the hollow wall panel 1 is improved.
In some embodiments, as shown in fig. 2 and 6, in the step of leaving the inflation port 210 of the air bag 200 at the outside of the steel reinforcement cage 100, the inflation port 210 of the air bag 200 with a bent angle is disposed at the outside of the steel reinforcement cage 100, so that the inflation, deflation and extraction of the air bag 200 can be facilitated, thereby making the use of the air bag 200 in the steel reinforcement cage 100 simpler. Simultaneously, set up the inflation inlet 210 of gasbag 200 in the outside of framework of steel reinforcement 100, can also be convenient for taking out of gasbag 200 for the recovery process of gasbag 200 is simpler, so that the production efficiency of hollow wallboard 1 obtains promoting.
Be equipped with the angle of buckling between inflation inlet 210 and the gasbag 200, inflation inlet 210 is towards the outside of framework of steel reinforcement 100, like this, because inflation inlet 210 locates the outside of framework of steel reinforcement 100, can be convenient for aerify, gassing and take out of gasbag 200 to it is simpler to let the use of gasbag 200 in framework of steel reinforcement 100. Simultaneously, set up the inflation inlet 210 of gasbag 200 in the outside of framework of steel reinforcement 100, can also be convenient for taking out of gasbag 200 for the recovery process of gasbag 200 is simpler, so that the production efficiency of hollow wallboard 1 obtains promoting.
In some embodiments, as shown in fig. 1 and 2, in the step of providing a bending angle between the inflation port 210 and the airbag 200, and the inflation port 210 faces the outside of the steel reinforcement cage 100, the airbag 200 is processed in a factory to form an inflation port section of 30cm to 50cm, and the predetermined bending angle α, α of the inflation port 210 satisfies the following relation: alpha is more than or equal to 15 degrees and less than or equal to 45 degrees. The bent angle is suitable for the smooth extraction of the air bag after the air bag is deflated, and the outer surface does not damage the concrete structure after the extraction.
Like this, through setting up the angle of buckling between gas charging port 210 and framework of steel reinforcement 100 between 15 to 45, not only can be convenient for the gassing of gasbag 200 to take out, promote production efficiency, and can let the gasbag 200 of taking out relatively complete, can carry out used repeatedly to reduce hollow wallboard 1's manufacturing cost. And simultaneously, the influence of the air bag 200 on the structure of the concrete 10 is reduced, so that the structural strength of the hollow wallboard 1 is improved, and the service performance of the hollow wallboard 1 is improved.
In some embodiments, as shown in fig. 1 and 3, the step of constructing the rebar grid 100 includes: respectively arranging a plurality of reinforcing steel bars in a transverse and longitudinal crossed manner; and binding the cross points of the transverse steel bars and the longitudinal steel bars. Like this, adopt the reinforcing bar of ligature setting, can simplify framework of steel reinforcement 100's connection process, promote connection efficiency. The ligature setting can be comparatively reliable and stable the reinforcing bar of connecting transverse arrangement and the reinforcing bar of vertical arrangement simultaneously for framework of steel reinforcement 100 arrange the connection more firm, thereby promote hollow wallboard 1's structural strength, make hollow wallboard 1 have higher performance. Meanwhile, the air bag with the bending angle is fixed on the steel bar framework after being inflated, so that the displacement during concrete pouring can be prevented, the production of the hollow wallboard 1 is facilitated, and the produced hollow wallboard 1 has higher use performance.
In some embodiments, as shown in fig. 7 and 8, the step of enclosing the periphery of the steel reinforcement cage 100 and pouring the concrete 10 includes: respectively installing a shaping template around the steel reinforcement framework 100; the shaping template can be repeatedly used, the production cost is reduced, and the production efficiency is improved.
And (5) pouring concrete. Like this, arrange at framework of steel reinforcement 100 and typical forms and pour concrete 10 after accomplishing, can let concrete 10 can be more reliable and stable stay between framework of steel reinforcement 100 to let hollow wallboard 1's production process more simple and convenient, so that hollow wallboard 1 has higher production efficiency.
The hollow wall panel 1 according to the embodiment of the invention adopts the manufacturing method of the hollow wall panel 1.
Thus, by constructing the hollow wall panel 1 by using the manufacturing method, the air bag 200 of the precast concrete PC hollow wall panel 1 in the steel reinforcement framework 100 can reduce the space between the steel reinforcement frameworks 100, so that the amount of concrete 10 poured in the space is reduced, and the weight and the production cost of the hollow wall panel 1 are reduced. Moreover, install the template and can avoid concrete 10's outflow outside framework of steel reinforcement 100, guarantee that 1 overall dimension of concrete PC hollow wall panel meets the regulation requirement, promote hollow wall panel 1's production efficiency. .
Other constructions and operations of the hollow wall panel 1 according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A manufacturing method of a precast concrete PC hollow wallboard is characterized by comprising the following steps:
building a steel bar framework;
arranging a plurality of air bags in the steel reinforcement framework;
sealing the periphery of the steel reinforcement framework, and pouring concrete;
and (4) deflating the air bag and taking out the air bag, and filling a gap left on the outer side of the air bag after the air bag is drawn out to form the hollow wallboard.
2. The method of making a precast concrete PC hollow wall panel according to claim 1, wherein the step of arranging a plurality of air cells within the rebar skeleton comprises:
arranging a plurality of uninflated air bags in the steel reinforcement framework in sequence;
inflating a plurality of said air cells.
3. The method of making a precast concrete PC hollow wall panel according to claim 2, wherein the step of inflating the plurality of air bags comprises:
inflating a plurality of said balloons into a hollow tubular shape.
4. The method of claim 2, wherein in the step of arranging a plurality of uninflated air cells in the reinforcement cage in sequence,
and reserving an inflation inlet of the air bag outside the steel reinforcement framework.
5. The method for manufacturing the precast concrete PC hollow wall panel according to claim 4, wherein in the step of pouring concrete around the closed reinforcement cage,
and pouring the concrete without exceeding the inflation port of the air bag.
6. The method for manufacturing a precast concrete PC hollow wall panel according to claim 4, wherein, in the step of leaving the inflation port of the air bag outside the steel reinforcement cage,
and a bending angle is arranged between the inflation inlet and the air bag, and the inflation inlet faces the outer side of the steel reinforcement framework.
7. The method for manufacturing a precast concrete PC hollow wall panel according to claim 6, wherein a bending angle is provided between the air charging port and the air bag, the air charging port faces to the outside of the steel reinforcement cage,
bending the inflation inlet by a preset angle alpha, wherein the alpha satisfies the relation: alpha is more than or equal to 15 degrees and less than or equal to 45 degrees.
8. The method for manufacturing the precast concrete PC hollow wall panel according to claim 1, wherein the step of building the steel reinforcement framework comprises the following steps:
respectively arranging a plurality of reinforcing steel bars in a transverse and longitudinal crossed manner;
and binding the cross points of the transverse reinforcing steel bars and the longitudinal reinforcing steel bars.
9. The method for manufacturing the precast concrete PC hollow wall panel according to claim 1, wherein the step of closing the periphery of the steel reinforcement framework and pouring concrete comprises the following steps:
respectively installing shaping templates around the steel bar framework;
and (5) pouring concrete.
10. A hollow wall panel, characterized by the use of a method of making a precast concrete PC hollow wall panel according to any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111306941.4A CN114102848A (en) | 2021-11-05 | 2021-11-05 | Manufacturing method of precast concrete PC hollow wallboard and hollow wallboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111306941.4A CN114102848A (en) | 2021-11-05 | 2021-11-05 | Manufacturing method of precast concrete PC hollow wallboard and hollow wallboard |
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| CN114102848A true CN114102848A (en) | 2022-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030397A (en) * | 2022-06-15 | 2022-09-09 | 广州永万预制构件有限公司 | Novel hollow prefabricated wallboard convenient to install and installation method thereof |
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| CN206189733U (en) * | 2016-11-08 | 2017-05-24 | 中民筑友科技投资有限公司 | Gasbag structure, light weight wallboard , prefabricated component |
| CN110748060A (en) * | 2019-11-25 | 2020-02-04 | 中国建筑第四工程局有限公司 | Novel assembled hollow composite floor slab air bag core mold and using method thereof |
| CN113216466A (en) * | 2021-05-07 | 2021-08-06 | 中铁十一局集团第二工程有限公司 | Hollow outer wall construction method |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06316943A (en) * | 1993-05-06 | 1994-11-15 | Kubota Corp | Method of forming air space in building structure |
| CN102003030A (en) * | 2010-11-24 | 2011-04-06 | 沈阳建筑大学 | Prefabricated coal gangue concrete hollow shear wallboard |
| CN103321412A (en) * | 2013-06-07 | 2013-09-25 | 温博 | Hollow floor air bag and construction method of cast-in-place hollow floors |
| CN206189733U (en) * | 2016-11-08 | 2017-05-24 | 中民筑友科技投资有限公司 | Gasbag structure, light weight wallboard , prefabricated component |
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| CN115030397A (en) * | 2022-06-15 | 2022-09-09 | 广州永万预制构件有限公司 | Novel hollow prefabricated wallboard convenient to install and installation method thereof |
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Application publication date: 20220301 |