CN114135049A - Light concrete composite heat-insulating wallboard and preparation method thereof - Google Patents

Light concrete composite heat-insulating wallboard and preparation method thereof Download PDF

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Publication number
CN114135049A
CN114135049A CN202111515301.4A CN202111515301A CN114135049A CN 114135049 A CN114135049 A CN 114135049A CN 202111515301 A CN202111515301 A CN 202111515301A CN 114135049 A CN114135049 A CN 114135049A
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board
heat
concrete composite
parts
lightweight concrete
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孙建民
王勇
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Zibo Zhongpeng Environmental Protection Technology Co ltd
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Zibo Zhongpeng Environmental Protection Technology Co ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26Building 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
    • E04C2/284Building 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
    • E04C2/288Building 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/14Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
    • B28B1/16Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted for producing layered articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/52Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/522Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement for producing multi-layered articles
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10Lime cements or magnesium oxide cements
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78Heat insulating elements
    • E04B1/80Heat insulating elements slab-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30Building 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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Building Environments (AREA)

Abstract

The invention belongs to the technical field of constructional engineering, and particularly relates to a lightweight concrete composite heat-insulating wallboard and a preparation method thereof, wherein the lightweight concrete composite heat-insulating wallboard comprises a concrete layer and a heat-insulating board, the concrete layer is wrapped on the outer layer of the heat-insulating board, and the concrete layer comprises the following raw materials: fly ash, lime, cement dry materials, aluminum powder, cellulose, glass fiber and liquid cement. The lightweight concrete composite heat-insulating wallboard prepared by the invention can be directly and integrally installed on an outer wall, so that the heat-insulating and heat-insulating properties of the outer wall are greatly improved.

Description

Light concrete composite heat-insulating wallboard and preparation method thereof
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a lightweight concrete composite heat-insulation wallboard and a preparation method thereof.
Background
At present, with the improvement of living conditions and the continuous improvement of living standard of people, the requirements of more and more people on living environment and living environment are gradually improved, with the continuous development and progress of building industry and the emergence of various new materials, the traditional house building mode and the traditional house building are also updated and improved, wherein the more used heat-insulating wall boards are mainly used for controlling indoor temperature, and the utilization rate of an indoor air conditioner can be reduced in a room using the heat-insulating wall boards, so that energy is saved, and the environment is protected.
Along with the continuous acceleration of the house industrialization process in China, the application range of the prefabricated building is wider and wider due to the advantages of high mechanization degree, short construction period, convenient installation process and the like, and the application range of prefabricated components is also continuously increased, wherein the prefabricated components comprise prefabricated inner wall boards, external wall boards, laminated plates, air-conditioning boards, stairs, prefabricated beams, prefabricated columns and the like. Especially in residential engineering, the use of prefabricated external wall panels is more prominent.
However, most of the prefabricated external wall panels used in the existing residential engineering are prefabricated and formed by adopting common concrete, and the formed external wall panels have heavy weight and poor heat preservation and insulation effects, so that the use functions of the residential building envelope are influenced, and the development of high-quality residences is restricted.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention overcomes the defects of the prior art, provides a lightweight concrete composite thermal insulation wallboard, solves the technical problems of heavy weight and poor thermal insulation and heat insulation effects of an external wallboard, and also provides a preparation method of the lightweight concrete composite thermal insulation wallboard.
The invention is realized by adopting the following technical scheme:
the lightweight concrete composite heat-insulating wallboard comprises a concrete layer and a heat-insulating board, wherein the concrete layer is wrapped on the outer layer of the heat-insulating board and comprises the following raw materials: fly ash, lime, cement dry materials, aluminum powder, cellulose, glass fiber and liquid cement.
Preferably, the lightweight concrete composite thermal insulation wallboard is characterized in that a concrete layer is prepared from the following raw materials in parts by weight: 2500 parts of 2000-flyash-containing materials, 30-80 parts of lime, 500 parts of cement dry materials, 1800-aluminium powder-containing materials, 3-8 parts of cellulose, 3-8 parts of glass fiber and 400 parts of liquid cement.
Preferably, the insulation board is one of a rock wool board, a SEPS board, an XPS board, an SXPS board, or an EPS board.
Preferably, a steel wire mesh is arranged in the concrete layer, connecting steel bars penetrate through the heat insulation board, and the connecting steel bars are connected with the steel wire mesh. The connecting reinforcing steel bars penetrate through the heat insulation board in a mode of being inserted in a straight mode or an inclined mode or a combination of two modes, and the connecting reinforcing steel bars and the reinforcing steel bar net piece are connected in a mode of being welded, screwed or buckled in a mode of being combined with one or more than two modes.
The preparation method of the lightweight concrete composite heat-insulation wallboard comprises the following steps:
(1) pulping: adding water into the fly ash to prepare slurry;
(2) heating and heat preservation: heating the slurry to 40-60 ℃ and then preserving heat;
(3) adding liquid cement into the slurry and uniformly stirring;
(4) then adding cement dry materials, lime, cellulose and glass fibers, uniformly mixing, then continuously adding aluminum powder, and uniformly mixing to obtain a concrete mixed material for later use;
(5) and (3) putting the heat insulation board into a mould, pouring the concrete mixture into the mould, and demoulding and curing to obtain the lightweight concrete composite heat insulation wallboard.
The diffusivity of the slurry in the step (1) is 20-25 cm.
And (3) adding the liquid cement into the slurry in the step (3) and controlling the solid-to-liquid ratio to be 60-70%.
And (4) adding the cement dry material, lime, cellulose and glass fiber, uniformly mixing for 1-3min, and then continuously adding aluminum powder.
Compared with the prior art, the invention has the following beneficial effects:
the lightweight concrete composite heat-insulating wallboard prepared by the invention can be directly and integrally installed on an outer wall, so that the heat-insulating and heat-insulating properties of the outer wall are greatly improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a concrete layer; 2. a thermal insulation board; 3. connecting reinforcing steel bars; 4. a steel wire mesh.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, the lightweight concrete composite heat-insulating wallboard comprises a concrete layer 1 and a heat-insulating board 2, the concrete layer 1 wraps the outer layer of the heat-insulating board 2, the heat-insulating board 2 is an SEPS board, a steel wire mesh 4 is arranged in the concrete layer 1, a connecting steel bar 3 penetrates through the heat-insulating board 2, and the connecting steel bar 3 is connected with the steel wire mesh 4.
The concrete layer is prepared from the following raw materials in parts by weight: 2300 parts of fly ash, 50 parts of lime, 450 parts of cement dry materials, 2000 parts of aluminum powder, 5 parts of cellulose, 5 parts of glass fiber and 300 parts of liquid cement.
The preparation method of the lightweight concrete composite heat-insulation wallboard comprises the following steps:
(1) pulping: adding water into the fly ash to prepare slurry with the diffusivity of 23 cm;
(2) heating and heat preservation: heating the slurry to 50 ℃ and then preserving heat;
(3) adding liquid cement into the slurry, and uniformly stirring, wherein the solid-liquid ratio is controlled to be 60%;
(4) then adding the cement dry material, the lime, the cellulose and the glass fiber, uniformly mixing for 2min, continuously adding the aluminum powder, and uniformly mixing to obtain a concrete mixed material for later use;
(5) and (3) putting the heat insulation board into a mould, pouring the concrete mixture into the mould, and demoulding and curing to obtain the lightweight concrete composite heat insulation wallboard.
Example 2
As shown in fig. 1, the lightweight concrete composite heat-insulating wallboard comprises a concrete layer 1 and a heat-insulating board 2, the concrete layer 1 wraps the outer layer of the heat-insulating board 2, the heat-insulating board 2 is an SEPS board, a steel wire mesh 4 is arranged in the concrete layer 1, a connecting steel bar 3 penetrates through the heat-insulating board 2, and the connecting steel bar 3 is connected with the steel wire mesh 4.
The concrete layer is prepared from the following raw materials in parts by weight: 2000 parts of fly ash, 50 parts of lime, 500 parts of cement dry materials, 2100 parts of aluminum powder, 5 parts of cellulose, 5 parts of glass fiber and 280 parts of liquid cement.
The preparation method of the lightweight concrete composite heat-insulation wallboard comprises the following steps:
(1) pulping: adding water into the fly ash to prepare slurry with the diffusivity of 24 cm;
(2) heating and heat preservation: heating the slurry to 50 ℃ and then preserving heat;
(3) adding liquid cement into the slurry, and uniformly stirring, wherein the solid-liquid ratio is controlled to be 65%;
(4) then adding the cement dry material, the lime, the cellulose and the glass fiber, uniformly mixing for 2min, continuously adding the aluminum powder, and uniformly mixing to obtain a concrete mixed material for later use;
(5) and (3) putting the heat insulation board into a mould, pouring the concrete mixture into the mould, and demoulding and curing to obtain the lightweight concrete composite heat insulation wallboard.
Example 3
As shown in fig. 1, the lightweight concrete composite heat-insulating wallboard comprises a concrete layer 1 and a heat-insulating board 2, the concrete layer 1 wraps the outer layer of the heat-insulating board 2, the heat-insulating board 2 is a rock wool board, a steel wire mesh 4 is arranged in the concrete layer 1, a connecting steel bar 3 penetrates through the heat-insulating board 2, and the connecting steel bar 3 is connected with the steel wire mesh 4.
The concrete layer is prepared from the following raw materials in parts by weight: 2400 parts of fly ash, 60 parts of lime, 480 parts of cement dry materials, 2000 parts of aluminum powder, 5 parts of cellulose, 5 parts of glass fiber and 400 parts of liquid cement.
The preparation method of the lightweight concrete composite heat-insulation wallboard comprises the following steps:
(1) pulping: adding water into the fly ash to prepare slurry with the diffusivity of 23 cm;
(2) heating and heat preservation: heating the slurry to 50 ℃ and then preserving heat;
(3) adding liquid cement into the slurry, and uniformly stirring, wherein the solid-liquid ratio is controlled to be 70%;
(4) then adding the cement dry material, the lime, the cellulose and the glass fiber, uniformly mixing for 2min, continuously adding the aluminum powder, and uniformly mixing to obtain a concrete mixed material for later use;
(5) and (3) putting the heat insulation board into a mould, pouring the concrete mixture into the mould, and demoulding and curing to obtain the lightweight concrete composite heat insulation wallboard.
Performance detection
The lightweight concrete composite heat-preservation wall panels prepared in the embodiments 1-3 of the invention are uniformly prepared to be 2000mm × 1000mm × 150mm in size, and then the detection is carried out according to the existing detection standard, and the detection results are shown in table 1.
TABLE 1 test results
Figure BDA0003406709480000041
Of course, the foregoing is only a preferred embodiment of the invention and should not be taken as limiting the scope of the embodiments of the invention. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.

Claims (8)

1. The utility model provides a light concrete composite insulation wallboard which characterized in that: including concrete layer and heated board, concrete layer wraps up in the skin of heated board, and concrete layer includes following raw materials: fly ash, lime, cement dry materials, aluminum powder, cellulose, glass fiber and liquid cement.
2. The lightweight concrete composite thermal insulation wallboard of claim 1, characterized in that: the concrete layer is prepared from the following raw materials in parts by weight: 2500 parts of 2000-flyash-containing materials, 30-80 parts of lime, 500 parts of cement dry materials, 1800-aluminium powder-containing materials, 3-8 parts of cellulose, 3-8 parts of glass fiber and 400 parts of liquid cement.
3. The lightweight concrete composite thermal insulation wallboard of claim 1, characterized in that: the heat insulation board is one of rock wool board, SEPS board, XPS board, SXPS board or EPS board.
4. The lightweight concrete composite thermal insulation wallboard of claim 1, characterized in that: the concrete layer is internally provided with a steel wire mesh, the heat insulation board is internally provided with connecting steel bars in a penetrating mode, and the connecting steel bars are connected with the steel wire mesh.
5. A method for preparing the lightweight concrete composite thermal insulation wallboard of any one of claims 1 to 4, which is characterized in that: the method comprises the following steps:
(1) pulping: adding water into the fly ash to prepare slurry;
(2) heating and heat preservation: heating the slurry to 40-60 ℃ and then preserving heat;
(3) adding liquid cement into the slurry and uniformly stirring;
(4) then adding cement dry materials, lime, cellulose and glass fibers, uniformly mixing, then continuously adding aluminum powder, and uniformly mixing to obtain a concrete mixed material for later use;
(5) and (3) putting the heat insulation board into a mould, pouring the concrete mixture into the mould, and demoulding and curing to obtain the lightweight concrete composite heat insulation wallboard.
6. The preparation method of the lightweight concrete composite thermal insulation wallboard according to claim 5, characterized in that: the diffusivity of the slurry in the step (1) is 20-25 cm.
7. The preparation method of the lightweight concrete composite thermal insulation wallboard according to claim 5, characterized in that: and (3) adding the liquid cement into the slurry in the step (3) and controlling the solid-to-liquid ratio to be 60-70%.
8. The preparation method of the lightweight concrete composite thermal insulation wallboard according to claim 5, characterized in that: and (4) adding the cement dry material, lime, cellulose and glass fiber, uniformly mixing for 1-3min, and then continuously adding aluminum powder.
CN202111515301.4A 2021-12-13 2021-12-13 Light concrete composite heat-insulating wallboard and preparation method thereof Pending CN114135049A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116044087A (en) * 2022-12-30 2023-05-02 和县飞竣新型建材有限公司 Light sound-insulation prefabricated wallboard and production method thereof

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CN103204655A (en) * 2013-05-06 2013-07-17 陈思源 Fabrication method of novel lightweight mixed material wallboard
CN103342528A (en) * 2013-06-03 2013-10-09 铜陵丰泽建材科技有限公司 Aerated concrete block reinforced by fibers and preparation method thereof
CN104446618A (en) * 2014-11-14 2015-03-25 安徽中龙建材科技有限公司 Glass fiber autoclaved lightweight concrete (ALC) slab and preparation method thereof
CN105218143A (en) * 2015-09-30 2016-01-06 安徽坤隆新型建材有限公司 A kind of high ductility aerated bricks mortar
CN107673670A (en) * 2017-10-19 2018-02-09 贵州源隆新型环保墙体建材有限公司 Glass fibre autoclave aerated concrete building block and preparation method thereof
CN112324017A (en) * 2020-12-14 2021-02-05 李当生 Lightweight concrete reinforced mesh frame composite thermal insulation wall panel and installation method thereof

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Publication number Priority date Publication date Assignee Title
CN103204655A (en) * 2013-05-06 2013-07-17 陈思源 Fabrication method of novel lightweight mixed material wallboard
CN103342528A (en) * 2013-06-03 2013-10-09 铜陵丰泽建材科技有限公司 Aerated concrete block reinforced by fibers and preparation method thereof
CN104446618A (en) * 2014-11-14 2015-03-25 安徽中龙建材科技有限公司 Glass fiber autoclaved lightweight concrete (ALC) slab and preparation method thereof
CN105218143A (en) * 2015-09-30 2016-01-06 安徽坤隆新型建材有限公司 A kind of high ductility aerated bricks mortar
CN107673670A (en) * 2017-10-19 2018-02-09 贵州源隆新型环保墙体建材有限公司 Glass fibre autoclave aerated concrete building block and preparation method thereof
CN112324017A (en) * 2020-12-14 2021-02-05 李当生 Lightweight concrete reinforced mesh frame composite thermal insulation wall panel and installation method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116044087A (en) * 2022-12-30 2023-05-02 和县飞竣新型建材有限公司 Light sound-insulation prefabricated wallboard and production method thereof

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Application publication date: 20220304