CN108529949A - A kind of light-weighted autoclaved air entrained concrete plate material and preparation method - Google Patents
A kind of light-weighted autoclaved air entrained concrete plate material and preparation method Download PDFInfo
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- CN108529949A CN108529949A CN201810322910.XA CN201810322910A CN108529949A CN 108529949 A CN108529949 A CN 108529949A CN 201810322910 A CN201810322910 A CN 201810322910A CN 108529949 A CN108529949 A CN 108529949A
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- concrete slab
- aerated concrete
- autoclaved aerated
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- foaming agent
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- 239000004567 concrete Substances 0.000 title claims abstract description 72
- 239000000463 material Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 80
- 239000004088 foaming agent Substances 0.000 claims abstract description 33
- 239000004568 cement Substances 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 28
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 25
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 42
- 239000004576 sand Substances 0.000 claims description 26
- 239000004570 mortar (masonry) Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 23
- 239000000292 calcium oxide Substances 0.000 claims description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 239000010426 asphalt Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 239000006260 foam Substances 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 2
- 235000013312 flour Nutrition 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of light-weighted autoclaved air entrained concrete plate materials, which includes bar-mat reinforcement, and, the following raw material formed by weight percentage：55 60% silica flour, 20 30% cement, 3 10% foaming agent, 4 15% quick limes, 1 1.5% fiber and 0.5 1.2% foaming agent；Wherein, the foaming agent includes aluminium powder and magnesia, and the weight ratio of the aluminium powder and magnesia is 4:6‑6:4.By using light-weighted autoclaved air entrained concrete plate material provided by the embodiments of the present application, it not only can effectively improve the intensity and hardness of autoclaved aerated concrete slab, and it can effectively reduce the quality of autoclaved aerated concrete slab so that autoclaved aerated concrete slab can be widely used.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a light autoclaved aerated concrete slab material and a preparation method thereof.
Background
The autoclaved aerated concrete slab is the development direction of the domestic light wall board material at present, and is widely applied to industrial and civil buildings such as concrete, steel structures and the like. It has the advantages of light weight, high strength, high heat insulating performance, good sound insulating performance, convenient construction, lasting fire resistance, etc. The autoclaved aerated concrete slab is adopted to replace the traditional aerated concrete building blocks, the cement slag hollow wall plate and the like, so that the purposes of protecting the environment, saving the energy, improving the surface quality of the wall body, increasing the building attractiveness, improving the indoor environment comfort level and the like can be realized besides greatly reducing the engineering time, improving the engineering installation quality and reducing the building cost.
The autoclaved aerated concrete slab is formed by reinforcing steel bars subjected to rust prevention treatment, pouring and molding raw materials such as cement and the like, and performing high-temperature, high-pressure and steam curing, has the minimum shrinkage ratio in inorganic materials, and is caulked by using a special polymer binder, so that cracking is effectively prevented; the autoclaved aerated concrete slab is used as a wall material, so that the using area of a building can be effectively increased, and the using energy consumption is reduced, thereby achieving the national building energy-saving standard.
However, the existing autoclaved aerated concrete slab cannot be completely applied to various fields due to various problems in the using process, such as small strength, small hardness, heavy mass and the like of the autoclaved aerated concrete slab, so that the application range of the existing autoclaved aerated concrete slab is greatly limited.
Disclosure of Invention
In order to overcome the problems in the related art, the invention provides a light autoclaved aerated concrete slab material and a preparation method thereof.
According to a first aspect of the embodiment of the invention, a light autoclaved aerated concrete slab material is provided, which comprises a reinforcing mesh and the following raw materials in percentage by weight:
55-60% of silica sand powder, 20-30% of cement, 3-10% of gas former, 4-15% of quicklime, 1-1.5% of fiber and 0.5-1.2% of foaming agent; wherein,
the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 4:6-6: 4.
Preferably, the light autoclaved aerated concrete slab material further comprises: 0.5-1% of foam stabilizer.
Preferably, the light autoclaved aerated concrete slab material further comprises: 1-3% of emulsified asphalt.
Preferably, the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 5: 5.
Preferably, the light autoclaved aerated concrete slab material comprises the following components in percentage by weight:
60% of silica sand powder, 20% of cement, 10% of gas former, 8% of quicklime, 1.2% of fiber and 0.8% of foaming agent; wherein,
the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 5: 5.
Preferably, the light autoclaved aerated concrete slab material also comprises 0.1-0.3% of kaolin or bentonite.
According to a second aspect of the embodiments of the present invention, there is provided a method for preparing a light autoclaved aerated concrete slab material, including:
step S01: weighing corresponding raw materials according to weight percentage;
step S02: mixing half of silica sand powder with water according to the proportion of 1:2, controlling the stirring speed at 150-;
step S03: continuously stirring the pre-mortar at the stirring speed of 600-800 rpm, sequentially adding the rest silica sand powder, cement and quick lime, controlling the slurry diffusion degree to be 15-25cm and the temperature to be 40-45 ℃, and continuously stirring for 4-5 hours to obtain mixed mortar;
step S04: adding a gas former and a foaming agent into the mixed mortar, and uniformly stirring the mixed mortar added with the gas former and the foaming agent at the stirring speed of 1000-;
step S05: pouring mortar is evenly injected into a mold box which is added with a reinforcing mesh in advance, and in the process of pouring the pouring mortar, the mortar and the fibers are evenly mixed until the pouring is finished and the mixture is cooled to the room temperature;
step S06: conveying the poured concrete slab into a static curing room with the temperature of 35-40 ℃ and the humidity of 40-50% for static curing for 1-2 hours;
step S07: and after curing, demolding, cutting and milling grooves to obtain a plate blank body with a corresponding size, then sending the plate blank body into a static curing chamber with the temperature of 100-.
Preferably, after the gas former and the foaming agent are added in the step S04, the foam stabilizer is added.
Preferably, before step S04, the method further comprises: heating the emulsified asphalt at 38-40 ℃, uniformly stirring at 100-120 r/min, and pouring the uniformly stirred emulsified asphalt into the mixed mortar for uniform stirring.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the embodiment of the invention provides a light autoclaved aerated concrete slab material, which comprises a reinforcing mesh and the following raw materials in percentage by weight: 55-60% of silica sand powder, 20-30% of cement, 3-10% of gas former, 4-15% of quicklime, 1-1.5% of fiber and 0.5-1.2% of foaming agent; the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 4:6-6: 4. By adopting the light autoclaved aerated concrete slab material provided by the embodiment of the application, the strength of the concrete slab can be effectively improved by taking the reinforcing mesh as the reinforcing rib, and the strength of the concrete slab can also be effectively improved by adopting the silica sand powder with a larger proportion, in addition, 3-10% of the gas former and 0.5-1.2% of the foaming agent are arranged, so that the silica sand powder, the cement, the quicklime and the fibers can be mixed to the maximum extent when the gas former and the foaming agent are used during stirring of various raw materials, and simultaneously, after the mixed slurry is formed, the density among various materials of the concrete slab is reduced under the condition of ensuring that the strength of the concrete slab is not changed, thereby effectively reducing the quality of the concrete slab and enabling the autoclaved aerated concrete slab to be widely used.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
In the description of the present invention, it is to be understood that the positional relationships indicated by the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are based on the positional or positional relationships shown in the drawings, are for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed or operated in a particular orientation, and therefore, should not be considered as limiting the present invention.
Fig. 1 is a schematic flow chart of a preparation method of a light autoclaved aerated concrete slab material provided by an embodiment of the invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The embodiment of the application provides a light autoclaved aerated concrete slab material, which comprises a reinforcing mesh and consists of the following components in percentage by weight: 55-60% of silica sand powder, 20-30% of cement, 3-10% of gas former, 4-15% of quicklime, 1-1.5% of fiber and 0.5-1.2% of foaming agent; the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 4:6-6: 4. In the specific implementation process, the reinforcing mesh is a cylindrical mesh with a double-spiral structure, the number of the cylindrical meshes is multiple, and the light autoclaved aerated concrete slab material further comprises: 0.5-1% of foam stabilizer and 1-3% of emulsified asphalt.
Example 1:
the light autoclaved aerated concrete slab material comprises a reinforcing mesh and also comprises the following components in percentage by weight: 60% of silica sand powder, 20% of cement, 3% of gas former, 15% of quicklime, 1.5% of fiber and 0.5% of foaming agent. Wherein the gas former comprises aluminum powder and magnesium oxide in a weight ratio of 4: 6.
By adopting the material of the embodiment, the silica sand powder and the quicklime with large components are added, so that the silica sand powder, the quicklime, the gas former and the foaming agent can react to the maximum extent, and the autoclaved aerated concrete slab with larger gap and higher strength is obtained.
Example 2:
the light autoclaved aerated concrete slab material comprises a reinforcing mesh and also comprises the following components in percentage by weight: 55% of silica sand powder, 30% of cement, 3% of a gas former, 10% of quicklime, 1% of fibers and 1% of a foaming agent, wherein the gas former comprises aluminum powder and magnesium oxide in a weight ratio of 6: 4.
Compared with the material in the embodiment 1, the material in the embodiment of the application has the advantages that the cement content is increased, and the prepared autoclaved aerated concrete slab can effectively reach the bonding degree of the concrete slab during the preparation through a large amount of cement, so that the high strength characteristic of the concrete slab is further reached.
Example 3:
the light autoclaved aerated concrete slab material comprises a reinforcing mesh and also comprises the following components in percentage by weight: 55% of silica sand powder, 20% of cement, 15% of gas former, 8% of quicklime, 1.5% of fiber and 0.5% of foaming agent, wherein the gas former comprises aluminum powder and magnesium oxide in a weight ratio of 5: 5.
Through adopting above-mentioned material of this application embodiment, through increasing a large amount of gassing agents to make silica sand powder and cement, quick lime when the mixing stirring, thereby can effectively generate a large amount of gas and fill in the concrete slab who makes, can effectively increase the clearance between the material, thereby make the weight reduction in the unit volume, effectively improve and evaporate pressure aerated concrete slab's weight, make and evaporate pressure aerated concrete slab's weight and reduce greatly.
Example 4:
the light autoclaved aerated concrete slab material comprises a reinforcing mesh and also comprises the following components in percentage by weight: 65% of silica sand powder, 25% of cement, 10% of gas former, 8% of quicklime, 1.2% of fiber and 0.8% of foaming agent; the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 5: 5.
By adopting the embodiment of the application, the proportion of the silica sand powder, the cement, the gas former, the quicklime, the fiber and the foaming agent can effectively play a role in bonding the cement and the capacity of generating bubbles of the gas former and the foaming agent, so that the weight of the autoclaved aerated concrete slab is reduced, and then the fiber and the reinforcing mesh are used for increasing the strength of the autoclaved aerated concrete slab simultaneously when the silica sand powder is bonded by increasing the fiber, so that the application range of the whole autoclaved aerated concrete slab is effectively enlarged.
Example 5: the light autoclaved aerated concrete slab material comprises a reinforcing mesh and also comprises the following components in percentage by weight: 55% of silica sand powder, 20% of cement, 5% of gas former, 15% of quicklime, 1% of fiber, 0.5% of foaming agent, 1.5% of foam stabilizer and 3% of emulsified asphalt.
In the embodiment of the application, the stability of the foaming agent and the foaming agent can be effectively stabilized by adding the foam stabilizer, so that the density of the autoclaved aerated concrete slab is more uniform; meanwhile, the emulsified asphalt is added, so that the emulsified asphalt and the cement jointly have an adhesion effect, and the emulsified asphalt and the cement are used for achieving physical adhesion simultaneously, so that the problems of environmental pollution or gas pollution and the like caused by chemical adhesion are solved.
Example 6: the light autoclaved aerated concrete slab material comprises a reinforcing mesh and also comprises the following components in percentage by weight: 55% of silica sand powder, 20% of cement, 5% of gas former, 15% of quicklime, 1% of fiber, 1.2% of foaming agent, 1% of foam stabilizer, 1.5% of emulsified asphalt and 0.3% of kaolin or bentonite.
By adopting the light autoclaved aerated concrete slab material provided by the embodiment of the application, the kaolin or the bentonite, the cement and the emulsified asphalt are mutually matched to realize adhesion by adding the kaolin or the bentonite, the cement and the emulsified asphalt, so that the adhesion degree among all materials in the autoclaved aerated concrete slab can be effectively improved, and the strength and the toughness of the autoclaved aerated concrete slab are further effectively improved.
The above are several possible embodiments of the concrete implementation, which do not represent all embodiments of the lightweight autoclaved aerated concrete panel, as long as the deformation within the composition of the above-mentioned various materials can be achieved, and the specific embodiments are not listed here, and reference can be made to the above-mentioned embodiments.
In an embodiment of the present application, an embodiment of the present application further provides a preparation method of a light autoclaved aerated concrete slab material, including:
step S01: respectively weighing 55-60% of silica sand powder, 20-30% of cement, 3-10% of a gas former, 4-15% of quicklime, 1-1.5% of fibers and 0.5-1.2% of a foaming agent according to the weight percentage, wherein the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 4:6-6: 4;
step S02: mixing half of silica sand powder with water according to the proportion of 1:2, controlling the stirring speed at 150-;
step S03: continuously stirring the pre-mortar at the stirring speed of 600-800 rpm, sequentially adding the rest silica sand powder, cement and quick lime, controlling the slurry diffusion degree to be 15-25cm and the temperature to be 40-45 ℃, and continuously stirring for 4-5 hours to obtain mixed mortar;
step S04: adding a gas former and a foaming agent into the mixed mortar, and uniformly stirring the mixed mortar added with the gas former and the foaming agent at the stirring speed of 1000-;
step S05: pouring mortar is evenly injected into a mold box which is added with a reinforcing mesh in advance, and in the process of pouring the pouring mortar, the mortar and the fibers are evenly mixed until the pouring is finished and the mixture is cooled to the room temperature;
step S06: conveying the poured concrete slab into a static curing room with the temperature of 35-40 ℃ and the humidity of 40-50% for static curing for 1-2 hours;
step S07: and after curing, demolding, cutting and milling grooves to obtain a plate blank body with a corresponding size, then sending the plate blank body into a static curing chamber with the temperature of 100-.
In the specific implementation process, after the gas former and the foaming agent are added in the step S04, 0.5-1% of the foam stabilizer can be added.
In addition, in the specific embodiment, 1-3% of the emulsified asphalt can be heated at 38-40 ℃ and uniformly stirred at 100-120 rpm, and the uniformly stirred emulsified asphalt can be poured into the mixed mortar and uniformly stirred.
The above-mentioned corresponding preparation method which can be realized according to various modifications of the light autoclaved aerated concrete plate material can be implemented according to the above-mentioned steps compared with the specific implementation mode of each light autoclaved aerated concrete plate material, and is not described in detail herein.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (9)
1. The light autoclaved aerated concrete slab is characterized by comprising a reinforcing mesh and the following raw materials in percentage by weight:
55-60% of silica sand powder, 20-30% of cement, 3-10% of gas former, 4-15% of quicklime, 1-1.5% of fiber and 0.5-1.2% of foaming agent; wherein,
the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 4:6-6: 4.
2. The light autoclaved aerated concrete slab material according to claim 1, further comprising: 0.5-1% of foam stabilizer.
3. The light autoclaved aerated concrete slab material according to claim 1, further comprising: 1-3% of emulsified asphalt.
4. The light autoclaved aerated concrete slab material as claimed in claim 1, wherein the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 5: 5.
5. The light autoclaved aerated concrete slab material as claimed in claim 1, which comprises the following components in percentage by weight:
60% of silica sand powder, 20% of cement, 10% of gas former, 8% of quicklime, 1.2% of fiber and 0.8% of foaming agent; wherein,
the gas former comprises aluminum powder and magnesium oxide, and the weight ratio of the aluminum powder to the magnesium oxide is 5: 5.
6. The light autoclaved aerated concrete slab material as claimed in claim 1, characterized in that it further comprises 0.1-0.3% of kaolin or bentonite.
7. A preparation method of a light autoclaved aerated concrete slab material is characterized by comprising the following steps:
step S01: weighing corresponding raw materials according to weight percentage;
step S02: mixing half of silica sand powder with water according to the proportion of 1:2, controlling the stirring speed at 150-;
step S03: continuously stirring the pre-mortar at the stirring speed of 600-800 rpm, sequentially adding the rest silica sand powder, cement and quick lime, controlling the slurry diffusion degree to be 15-25cm and the temperature to be 40-45 ℃, and continuously stirring for 4-5 hours to obtain mixed mortar;
step S04: adding a gas former and a foaming agent into the mixed mortar, and uniformly stirring the mixed mortar added with the gas former and the foaming agent at the stirring speed of 1000-;
step S05: pouring mortar is evenly injected into a mold box which is added with a reinforcing mesh in advance, and in the process of pouring the pouring mortar, the mortar and the fibers are evenly mixed until the pouring is finished and the mixture is cooled to the room temperature;
step S06: conveying the poured concrete slab into a static curing room with the temperature of 35-40 ℃ and the humidity of 40-50% for static curing for 1-2 hours;
step S07: and after curing, demolding, cutting and milling grooves to obtain a plate blank body with a corresponding size, then sending the plate blank body into a static curing chamber with the temperature of 100-.
8. The method for preparing a light-weight autoclaved aerated concrete slab material according to claim 7, wherein a foaming agent and a foaming agent are added in the step S04, and then a foam stabilizer is added.
9. The method for producing a light-weight autoclaved aerated concrete slab material according to claim 7, characterized in that, before step S04, the method further comprises: heating the emulsified asphalt at 38-40 ℃, uniformly stirring at 100-120 r/min, and pouring the uniformly stirred emulsified asphalt into the mixed mortar for uniform stirring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810322910.XA CN108529949A (en) | 2018-04-11 | 2018-04-11 | A kind of light-weighted autoclaved air entrained concrete plate material and preparation method |
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| CN201810322910.XA CN108529949A (en) | 2018-04-11 | 2018-04-11 | A kind of light-weighted autoclaved air entrained concrete plate material and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113815103A (en) * | 2021-09-30 | 2021-12-21 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for producing concrete member and concrete member |
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