CN109629737A - The building block of foam concrete composite exterior wall, preparation method and application - Google Patents
The building block of foam concrete composite exterior wall, preparation method and application Download PDFInfo
- Publication number
- CN109629737A CN109629737A CN201811498724.8A CN201811498724A CN109629737A CN 109629737 A CN109629737 A CN 109629737A CN 201811498724 A CN201811498724 A CN 201811498724A CN 109629737 A CN109629737 A CN 109629737A
- Authority
- CN
- China
- Prior art keywords
- foam concrete
- exterior wall
- building block
- composite exterior
- laminated
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
-
- 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
-
- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
Abstract
The invention discloses a kind of foam concrete composite exterior wall building blocks, including outer foam concrete and laminated foam concrete, the outer foam concrete includes a pair, a wherein end face for the laminated foam concrete is connect with a wherein outer foam concrete, and the other end of the laminated foam concrete is connect with another outer foam concrete.The invention also discloses a kind of preparation method of foam concrete composite exterior wall building block and the application of the foam concrete composite exterior wall building block in architectural engineering.The foam concrete composite exterior wall building block of the present invention laminated foam concrete excellent by means of the biggish outer foam concrete of compression strength and heat preservation and insulation, both the foam concrete composite exterior wall building block compression strength with higher had been can guarantee, moreover it is possible to guarantee that the foam concrete composite exterior wall building block has excellent thermal and insulating performance.
Description
Technical field
The present invention relates to construction engineering technical field more particularly to a kind of foam concrete composite exterior wall building block, the present invention
A kind of foam concrete composite exterior wall building block is further related in the application of construction engineering technical field.
Background technique
Outer wall material, external wall structure and outer wall heat insulating energy saving are that country always advocates, the consistent Kechuang item for encouraging to support
Mesh.The building block of foam concrete composite exterior wall is at five aspects such as compression strength, density of material, antiseepage, heat-insulating and energy-saving and fire prevention
Have the advantages that prominent.Especially block insulation layer can effectively prevent the indoor and outdoor air temperature difference from conducting.Air-conditioning can be reduced in summer
Energy consumption, in winter, can effectively reduce heating coal consumption or other heating energy consumptions, reduce haze, improve air quality, be one can
Capable energy-saving building technology.And the composite block is inorganic material production, fire protecting performance is superior, is produced when burning without pernicious gas
It is raw.
Currently, China's exterior wall mainly uses air-entrained concrete building block to build exterior wall, the then sticking heat-preservation plate outside exterior wall
Method solve the problems, such as exterior-wall heat insulation.Most of external wall used the heat preserving method of paste outside polyphenylene heat insulation slab in the past,
The portion of building, which is lived, after styrofoam generation burning fire accident has halted this method.Subsequent relatively effective heat preservation technology is outside exterior wall
Paste foam concrete heat-preserving plate.Air-entrained concrete building block with siliceous, calcareous (cement, lime) be main material, using chemistry
Foaming generates the silicate product of intensity by steam press maintenance hydrothermal synthesis.In process, by temperature change and aluminium powder
The influence of grain size, pore opening is uneven, and mutually gangs up, and not can effectively prevent the conduction of the indoor and outdoor air temperature difference, heat preservation section
Energy performance is poor, and frost resistance is poor, and causes wall leakage easy to crack, this common fault of building drastically influences building wall constitution for a long time
It measures and lives quality.
Summary of the invention
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide a kind of foam concrete composite exterior walls
Building block, with solve to cannot be considered in terms of existing for above-mentioned existing exterior wall building block biggish compression strength, lesser density of material and compared with
The problems such as excellent heat-insulating and energy-saving and pore opening are uneven, and mutually gang up, and building block not can effectively prevent the indoor and outdoor air temperature difference
It conducts, properties of heat preservation and energy saving is poor, and frost resistance, compression strength are poor, and wall leakage equal common fault of building easy to crack.
The second object of the present invention is to provide a kind of preparation method of foam concrete composite exterior wall building block, passes through the system
Preparation Method can prepare the foam concrete for having both that compression strength is high, total body density is relatively small, heat preservation and insulation is excellent
Composite exterior wall building block, to solve above-mentioned common fault of building.
The third object of the present invention is to provide a kind of application of foam concrete composite exterior wall building block in architectural engineering,
With solve not can effectively prevent existing for existing exterior wall building block the indoor and outdoor air temperature difference conduction, properties of heat preservation and energy saving it is poor, freeze proof
The common fault of building such as property is poor, wall leakage is easy to crack.
An object of the present invention adopts the following technical scheme that realization:
A kind of foam concrete composite exterior wall building block, including outer foam concrete and laminated foam concrete, it is described outer
Layer foam concrete includes a pair, and a wherein end face for the laminated foam concrete connects with a wherein outer foam concrete
It connects, the other end of the laminated foam concrete is connect with another outer foam concrete；
The density of the outer foam concrete is 900~1100Kg/m3, the compression strength of the outer foam concrete
For 4~6MPa, the thermal coefficient of the outer foam concrete is 0.3~0.5W/m3.K；
The density of the laminated foam concrete is 200~400Kg/m3, the compression strength of the laminated foam concrete
For 1~1.4MPa, the thermal coefficient of the laminated foam concrete is 0.05~0.1W/m3.K；
The averag density of the foam concrete composite exterior wall building block is 450~650Kg/m3。
Further, the density of the outer foam concrete is 1000Kg/m3, the resistance to compression of the outer foam concrete
Intensity is 5MPa, and the thermal coefficient of the outer foam concrete is 0.4W/m3.K；
The density of the laminated foam concrete is 300Kg/m3, the compression strength of the laminated foam concrete is
1.2MPa, the thermal coefficient of the laminated foam concrete are 0.08W/m3.K；
The averag density of the foam concrete composite exterior wall building block is 550Kg/m3。
Further, the outer foam concrete with a thickness of 40~60mm, the thickness of the laminated foam concrete
For 80~120mm.
Further, the outer foam concrete with a thickness of 50mm, the laminated foam concrete with a thickness of
100mm。
The second object of the present invention adopts the following technical scheme that realization:
A kind of preparation method of foam concrete composite exterior wall building block, comprising the following steps:
It prepares the foam concrete slurry of different bulk density: foam is prepared by physical blowing agent, by foam, silicate cement
Mud, auxiliary material and water mixing, stir evenly, and it is 900~1100Kg/m that bulk density, which is made,3Outer foam concrete slurry and bulk density be
200~400Kg/m3Laminated foam concrete slurry；
Moulding by casting: using the mobile method of fixed point casting, mold, outer foam concrete slurry is mixed with laminated foam
Solidifying soil paste material layering is alternately poured into mold.It is quiet stop, solidify after, be made green body；
Sunlight maintenance: green body is transferred to after sunlight board fog room conserves 3 and is packaged, field curing field is moved to therewith and supports again
Shield 25 days.The building block of foam concrete composite exterior wall is made.
Further, in moulding by casting step, the outer foam concrete slurry and laminated foam concrete slurry
Using two independent pouring heads, and the pouring head is liftable pouring head；
The impact that generates when the liftable pouring head is poured by elevating control so that outer foam concrete slurry with
The layer-by-layer uniform distribution of laminated foam concrete slurry.
Further, in moulding by casting step, green body obtained is mechanically cut into comprising two outer layers foam coagulation
The green body of soil and a layer interlayer foam concrete.
Further, in sunlight curing step, the sunlight board fog room is by hollow glass or PC hollow sunlight board system
At roof and heat-barrier material made of enclosure wall composition, the sunlight board fog room room temperature be 30~50 DEG C.
The third object of the present invention adopts the following technical scheme that realization:
Application of any of the above-described foam concrete composite exterior wall building block in architectural engineering.
Compared with prior art, the beneficial effects of the present invention are:
(1) foam concrete composite exterior wall building block of the present invention includes outer foam concrete and laminated foam concrete, outside
Layer foam concrete has biggish density, therefore ensure that outer foam concrete has preferable compression strength, is set to
Foam concrete composite exterior wall building block outer layer plays the role of reinforcing foam concrete composite exterior wall building block whole compressive strength.
Laminated foam concrete has lesser density, and bigger according to density, compression strength is bigger, the bigger principle of thermal coefficient, folder
Layer foam concrete has lesser thermal coefficient, therefore, laminated foam concrete heat insulation excellent thermal insulation performance.Foam of the present invention
The concrete composite external wall building block interlayer excellent by means of the biggish outer foam concrete of compression strength and heat preservation and insulation
Foam concrete both can guarantee the foam concrete composite exterior wall building block compression strength with higher, moreover it is possible to guarantee the foam
Concrete composite external wall building block has excellent thermal and insulating performance.Foam concrete composite exterior wall building block of the present invention includes material
It is compound outer to advantageously reduce foam concrete for the biggish outer foam concrete of density and the lesser laminated foam concrete of density
The density of wall building block entirety, facilitates the hoisting process of the foam concrete composite exterior wall building block.In addition, since foam concrete is multiple
Two that exterior wall building block has the function of outer layer carrying and interlayer heat-insulation and heat-preservation are closed, wall of aerated concrete block outer patch guarantor is eliminated
The engineering method of warm plate can shorten the construction period, reduce cost.
(2) preparation method of foam concrete composite exterior wall building block of the present invention is foamed using physical blowing agent, primary raw material
For portland cement, there is no need to steam pressures, and high-intensitive cement products is generated by natural curing hydrated cementitious.Foam concrete
For small hole-closing structure, the indoor and outdoor air temperature difference can effectively be prevented to conduct, properties of heat preservation and energy saving is prominent.Meanwhile it can basis
Various different demands conditions, by adjusting the match ratio of cement, auxiliary material, water and foaming agent, can obtain design, have
The foam concrete block of various difference compression strength and density, efficiently solving external wall seepage and crack, this long-standing is asked
Topic.
(3) application of the foam concrete composite exterior wall building block of the present invention in architectural engineering, by using foam of the present invention
Concrete composite external wall building block ensure that building is high-strength so that building has both anti-high pressure carrying and two functions of heat-insulation and heat-preservation
The advantages that degree, heat-insulating and energy-saving.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of foam concrete composite exterior wall building block of the present invention；
Fig. 2 is the structural schematic diagram of sunlight board fog room；
Fig. 3 is the cutting schematic diagram of primary green body.
In figure: 1, outer foam concrete；2, laminated foam concrete；31, roof；32, enclosure wall；X, horizontal cut line；
Y, vertical cutting line.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
Embodiment 1
As shown in Figure 1, for a kind of foam concrete composite exterior wall building block applied in building structure of the present invention, including set
The outer foam concrete 1 being placed at left and right sides of foam concrete composite exterior wall building block and the outer foam for being set to the left and right sides
Laminated foam concrete 2 between concrete 1, the left and right ends of laminated foam concrete 2 respectively with outer foam concrete 1
Connection, constitutes complete foam concrete composite exterior wall building block as a result,.Wherein, the density of outer foam concrete 1 is
1000Kg/m3, the compression strength of outer foam concrete 1 is 5MPa, and the thermal coefficient of outer foam concrete 1 is 0.4W/
m3.K.The density of laminated foam concrete 2 is 300Kg/m3, the compression strength of laminated foam concrete 2 is 1.2MPa, interlayer bubble
The thermal coefficient of foam concrete 2 is 0.08W/m3.K。
Bigger according to density, compression strength is bigger, the bigger principle of thermal coefficient.Foam concrete composite exterior wall of the present invention
Building block includes the biggish outer foam concrete of density and the lesser laminated foam concrete of density, the biggish outer foam of density
Concrete ensure that outer foam concrete has preferable compression strength, be set to outside foam concrete composite exterior wall building block
Layer plays the role of reinforcing foam concrete composite exterior wall building block whole compressive strength.The lesser laminated foam concrete of density
With lesser thermal coefficient, therefore, foam concrete composite exterior wall building block heat preservation and insulation is excellent.In addition, the present invention steeps
Foam concrete composite exterior wall building block includes the biggish outer foam concrete of density and the lesser laminated foam concrete of density, is had
Conducive to the density for reducing foam concrete composite exterior wall building block entirety, facilitate the lifting of the foam concrete composite exterior wall building block
Journey.In addition, being eliminated since foam concrete composite exterior wall building block has the function of two of outer layer carrying and interlayer heat-insulation and heat-preservation
The engineering method of wall of aerated concrete block outer patch insulation board, can shorten the construction period, reduce cost.
In the present embodiment, outer foam concrete 1 with a thickness of 50mm, laminated foam concrete 2 with a thickness of
100mm, at this point, the averag density of foam concrete composite exterior wall building block is 550Kg/m3.The outer layer optimized by thickness, density
Foam concrete 1 and laminated foam concrete 2 so that foam concrete composite exterior wall building block have both excellent compression strength and every
Hot thermal insulation property can also advanced optimize the total body density of foam concrete composite exterior wall building block, and it is multiple to be conducive to the foam concrete
Close the hoisting process of exterior wall building block.
Embodiment 2
Foam concrete composite exterior wall building block in embodiment 1 can be prepared by following preparation method, the preparation
Method include the following:
It prepares the foam concrete slurry step of different bulk density: foam is prepared by physical blowing agent.Pass through auxiliary material and water
It mixes, stir evenly the primary slurry of preparation.Again by the foam of preparation, portland cement and primary slurry according to two kinds of different ratios
It mixes, stir evenly, it is 1000Kg/m that bulk density, which is made,3Outer foam concrete slurry (refer to the outer foam concrete slurry
After solidification, corresponding outer foam concrete density is 1000Kg/m3) and bulk density be 300Kg/m3Laminated foam concrete
(after referring to laminated foam concrete slurry solidification, corresponding laminated foam concrete density is 300Kg/m to slurry3), it separates
It stores, is spare.
Moulding by casting step: it is starched using the foam concrete of two kinds of different bulk density of two independent pouring head casting preparations
For material into mold, i.e., one of casting bulk density is 1000kg/m3Outer foam concrete slurry, another casting bulk density be
300kg/m3Laminated foam concrete slurry, two independent pouring heads be layered respectively alternately be poured, mold is controlled by PLC
The speed of travel and path, complete casting thickness.The mold for being mounted with foam concrete slurry stops, solidifies and demoulds by quiet
After tool, green body is made.
Sunlight curing step: green body is transferred to after sunlight board fog room as shown in Figure 2 conserves 3 and is packaged, is then moved
It is conserved again 25 to field curing field.Foam concrete composite exterior wall building block after the maintenance of sunlight board greenhouse has reached architectural engineering
The building block of foam concrete composite exterior wall is made in requirement of the field about exterior wall building block compression strength, heat preservation and insulation and density.
As preferred embodiment, in moulding by casting step, two independent pouring heads are liftable pouring head,
Foam concrete slurry is to the concrete grout bed of material being poured when by means of liftable pouring head by going up and down to control casting
The impact of generation, preventing pouring head from spraying, pressure is too large or too small to lead to outer foam concrete slurry and laminated foam coagulation
Soil paste material is unevenly distributed.
As preferred embodiment, in moulding by casting step, as shown in figure 3, two independent pouring head layerings are handed over
For casting outer foam concrete slurry and laminated foam concrete slurry, it is quiet stop, solidify and stripper member after, primary base is made
Body.Primary green body is cut into mixed comprising two outer layers foam concrete 1 and a layer interlayer foam using the method for machine cuts
The ultimate green body of solidifying soil 2, such as (X is horizontal resection direction, and Y is vertical cutting side along cut direction X, Y shown in Fig. 3
To), primary green body is mechanically cut into ultimate green body.Ultimate green body transfers to sunlight board fog room and carries out sunlight maintenance, eventually
Pole green body has bigger body surface area relative to primary green body, and the moisture facilitated inside green body is sufficiently volatilized, connect with air
Touching and cement further solidify, and accelerate the maintenance rate of foam concrete composite exterior wall building block.
As preferred embodiment, as shown in Fig. 2, in sunlight curing step, sunlight board fog room by roof 31 and
Enclosure wall 32 is constituted, and 32 tip shelf of enclosure wall is equipped with steelframe crossbeam, is used to support roof 31.In the present embodiment, roof 31 is by hollow
Glass is made, and in other embodiments, roof 31 can also be made of PC hollow sunlight board.Enclosure wall 32 is made of heat-barrier material.
Traditional air-entrained concrete building block must be by hydrothermal synthesis by still kettle steam press maintenance due to material and foaming technique requirement
Generate high-intensitive silicate product.And foam concrete uses natural curing technique, is that hydrated cementitious generates high-intensitive water
Mud product eliminates steam pressure boiler bring environmental issue.But the natural curing time is long, to improve natural curing efficiency, this
Technique is using sunlight board greenhouse maintenance (see Fig. 2).Sunlight board greenhouse absorbs and gathers solar thermal energy, keeps greenhouse temperature, energy conservation
Environmental protection.In Guangzhou, summer sun glasshouse temperature is up to 50 degree or more, and winter also up to 30 degree or more, effectively shortens building block from cutting
Afterwards to the curing cycle for reaching packaging intensity.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (9)
1. a kind of foam concrete composite exterior wall building block, which is characterized in that including outer foam concrete and laminated foam coagulation
Soil, the outer foam concrete include a pair, a wherein end face for the laminated foam concrete and a wherein outer foam
Concrete connection, the other end of the laminated foam concrete is connect with another outer foam concrete；
The density of the outer foam concrete is 900~1100Kg/m3, the compression strength of the outer foam concrete is 5~
6MPa, the thermal coefficient of the outer foam concrete are 0.3~0.5W/m3.K；
The density of the laminated foam concrete is 200~400Kg/m3, the compression strength of the laminated foam concrete is 1~
1.4MPa, the thermal coefficient of the laminated foam concrete are 0.05~0.1W/m3.K；
The averag density of the foam concrete composite exterior wall building block is 450~650Kg/m3。
2. foam concrete composite exterior wall building block according to claim 1, which is characterized in that the outer foam concrete
Density be 1000Kg/m3, the compression strength of the outer foam concrete is 5MPa, the outer foam concrete it is thermally conductive
Coefficient is 0.4W/m3.K；
The density of the laminated foam concrete is 300Kg/m3, the compression strength of the laminated foam concrete is 1.2MPa, institute
The thermal coefficient for stating laminated foam concrete is 0.08W/m3.K；
The averag density of the foam concrete composite exterior wall building block is 550Kg/m3。
3. foam concrete composite exterior wall building block according to claim 1, which is characterized in that the outer foam concrete
With a thickness of 40~60mm, the laminated foam concrete with a thickness of 80~120mm.
4. foam concrete composite exterior wall building block according to claim 3, which is characterized in that the outer foam concrete
With a thickness of 50mm, the laminated foam concrete with a thickness of 100mm.
5. a kind of preparation method of foam concrete composite exterior wall building block, which comprises the following steps:
It prepares the foam concrete slurry of different bulk density: foam is prepared by physical blowing agent, by foam, portland cement, auxiliary
Material and water mixing, stir evenly, and it is 900~1100Kg/m that bulk density, which is made,3Outer foam concrete slurry and bulk density be 200~
400Kg/m3Laminated foam concrete slurry；
Moulding by casting: using the mobile method of fixed point casting, mold, by outer foam concrete slurry and laminated foam concrete
Slurry layering is alternately poured into mold, it is quiet stop, solidify after, obtained green body；
Sunlight maintenance: green body is transferred to after sunlight board fog room conserves 3 and is packaged, field curing field is moved to therewith and conserves 25 again
Day, the building block of foam concrete composite exterior wall is made.
6. the preparation method of foam concrete composite exterior wall building block according to claim 5, which is characterized in that pouring into
In type step, the outer foam concrete slurry and laminated foam concrete slurry use two independent pouring heads, and institute
Stating pouring head is liftable pouring head；
The impact that the liftable pouring head generates when being poured by elevating control, so that outer foam concrete slurry and interlayer
The layer-by-layer uniform distribution of foam concrete slurry.
7. the preparation method of foam concrete composite exterior wall building block according to claim 5, which is characterized in that pouring into
In type step, green body obtained is through being mechanically cut into the base comprising two outer layers foam concrete and a layer interlayer foam concrete
Body.
8. the preparation method of foam concrete composite exterior wall building block according to claim 5, which is characterized in that supported in sunlight
It protects in step, is enclosed made of sunlight board fog room roof made of hollow glass or PC hollow sunlight board and heat-barrier material
Wall composition, the sunlight board fog room room temperature are 30~50 DEG C.
9. application of the described in any item foam concrete composite exterior wall building blocks of claim 1-4 in architectural engineering.
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| CN201811498724.8A CN109629737A (en) | 2018-12-08 | 2018-12-08 | The building block of foam concrete composite exterior wall, preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811498724.8A CN109629737A (en) | 2018-12-08 | 2018-12-08 | The building block of foam concrete composite exterior wall, preparation method and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114044691A (en) * | 2021-06-16 | 2022-02-15 | 福建万峰节能建材有限公司 | Preparation process of aerated concrete block |
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