CN112456941A - Autoclaved aerated concrete plate and preparation method thereof - Google Patents
Autoclaved aerated concrete plate and preparation method thereof Download PDFInfo
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- CN112456941A CN112456941A CN202011275151.XA CN202011275151A CN112456941A CN 112456941 A CN112456941 A CN 112456941A CN 202011275151 A CN202011275151 A CN 202011275151A CN 112456941 A CN112456941 A CN 112456941A
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- 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
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
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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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
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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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
- B28B11/145—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting for dividing block-shaped bodies of expanded materials, e.g. cellular concrete
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The invention discloses an autoclaved aerated concrete plate which is characterized by comprising the following components in parts by weight: 1300 portions of slurry 1250-. The invention also discloses a preparation method of the autoclaved aerated concrete plate. The autoclaved aerated concrete plate disclosed by the invention has the advantages of good comprehensive performance, light weight, more excellent compressive strength, heat preservation performance and drying shrinkage performance, and better comprehensive performance.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an autoclaved aerated concrete plate and a preparation method thereof.
Background
The autoclaved aerated concrete plate is a novel light porous green environment-friendly building material which takes cement, lime, silica sand and the like as main raw materials and is added with different quantities of steel bar meshes subjected to corrosion protection treatment according to structural requirements, is widely applied to industrial and civil buildings such as concrete, steel structures and the like, and has the advantages of light weight, high strength, high heat preservation, good sound insulation, convenience in construction, fire resistance, durability, small freeze-thaw loss and the like. The autoclaved aerated concrete plate replaces the traditional aerated concrete blocks and cement slag hollow wall plates, so that the purposes of protecting the environment, saving energy, improving the surface quality of the wall body, improving 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 existing autoclaved aerated concrete slab has various problems in the use process, such as small strength, small hardness and heavy mass of the autoclaved aerated concrete slab, and the existing autoclaved aerated concrete slab is not high in heat preservation performance under the common condition, so that the existing autoclaved aerated concrete slab cannot be completely applied to various fields, and the application range of the existing autoclaved aerated concrete slab is greatly limited. Particularly when the aerated concrete slab is used in an environment with higher requirement on the compressive strength, the common aerated concrete slab on the market has insufficient compressive strength.
The Chinese patent with the application publication number of CN107032708A in the prior patent discloses an autoclaved aerated concrete slab and a manufacturing method thereof, and provides the autoclaved aerated concrete slab prepared by taking granite waste as a raw material and the manufacturing method thereof. However, the autoclaved aerated concrete slab is prepared by using granite waste as a raw material, wherein the particle size of the granite waste is large, and the surface of the prepared autoclaved aerated concrete slab is rough, and the granite waste needs to be exposed when being used as a partition board, so that the attractiveness of the partition board is influenced, and the autoclaved aerated concrete slab has use limitations.
The patent application with the application number of CN201611241244.4 discloses an aerated concrete slab and a manufacturing method thereof, and the aerated concrete slab comprises 53-89 parts of fly ash, 30-90 parts of sand, 10-26 parts of quick lime, 0.5-1.7 parts of desulfurized gypsum, 0.05-0.15 part of aluminum powder, 0.5-2 parts of an additive and 5-14 parts of cement by mass. The compressive strength, the heat preservation performance and the drying shrinkage performance of the aerated concrete slab need to be further improved.
Therefore, the autoclaved aerated concrete plate with excellent compressive strength, heat preservation performance, drying shrinkage performance and comprehensive performance is developed, meets the market demand, has wide market value and application prospect, and has very important significance for promoting the development of the field of autoclaved aerated concrete plates.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the autoclaved aerated concrete plate which is excellent in comprehensive performance, light in weight, more excellent in compressive strength, heat preservation performance and drying shrinkage performance and better in comprehensive performance. Meanwhile, the invention also provides a preparation method of the autoclaved aerated concrete plate, which is simple and feasible, convenient to operate and control, high in preparation efficiency and suitable for industrial production.
In order to achieve the purpose, the invention adopts the technical scheme that: the autoclaved aerated concrete plate is characterized by comprising the following components in parts by weight: 1300 portions of slurry 1250-.
Preferably, the autoclaved aerated concrete plate comprises the following components in parts by weight: 1280 parts of slurry, 400 parts of waste slurry, 230 parts of lime, 590 parts of cement, 2.9 parts of aluminum paste, 0.8 part of gas former and 0.5 part of foam stabilizer.
Preferably, the gas former is one of magnesium, aluminum zinc alloy, ferrosilicon, hydrogen peroxide and calcium carbide.
Preferably, the foam stabilizer is one of silicone polyether emulsion, polyacrylamide and polyvinyl alcohol.
Preferably, the water content of the slurry is 20-30%.
Preferably, the water content of the waste slurry is 25-35%.
Preferably, the slurry comprises the following dry materials in parts by weight: 15-20 parts of silica fume, 1-3 parts of crystal white sand, 2-5 parts of attapulgite, 1-2 parts of fluorgypsum, 2-5 parts of calcite powder, 10-20 parts of volcanic ash, 0.5-1 part of rare earth organic metal framework and 1-3 parts of functional cellulose fiber based on beta-cyclodextrin.
Preferably, the preparation method of the functional cellulose fiber based on beta-cyclodextrin is described in chinese patent application No. 201811370294.1, example 1.
Preferably, the preparation method of the rare earth organic metal framework is described in Chinese patent application No. 201210245269.7, example 1.
Preferably, the waste slurry comprises the following solid wastes in parts by weight: 2-5 parts of fly ash, 4-8 parts of blast furnace slag, 1-3 parts of desulfurized fly ash and 10-20 parts of stone powder.
Preferably, the cement is at least one of ordinary portland cement, portland slag cement, portland pozzolanic cement and portland fly ash cement.
Preferably, the aluminum paste is formed by melting aluminum powder at the temperature of 680-740 ℃ by taking graphene as a carrier under the condition of nitrogen or inert gas, and staying in gaps of the graphene for grinding; the inert gas is any one of helium, neon and argon.
The invention also aims to provide a preparation method of the autoclaved aerated concrete plate, which comprises the following steps: mixing the components in parts by weight, uniformly stirring, pouring the obtained slurry into a mold, statically maintaining the mold until the slurry is thickened into a blank with the strength of more than 0.1MPa, and statically maintaining the mold for 1.2 to 2.2 hours; then peeling and scraping the blank body, vertically cutting two side surfaces of the blank body, then longitudinally and horizontally cutting the blank body, and finally transversely and vertically cutting the blank body; then sending the cut embryo body into an autoclave for steam curing for 5-8 hours at the temperature of 180-; and finally, gradually cooling to room temperature and taking out to obtain the autoclaved aerated concrete plate.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the autoclaved aerated concrete plate provided by the invention has the advantages of excellent comprehensive performance, light weight, more excellent compressive strength, heat preservation performance and drying shrinkage performance, and better comprehensive performance. Meanwhile, the invention also provides a preparation method of the autoclaved aerated concrete plate, which is simple and feasible, convenient to operate and control, high in preparation efficiency and suitable for industrial production.
Detailed Description
The following detailed description of preferred embodiments of the invention will be made.
The autoclaved aerated concrete plate is characterized by comprising the following components in parts by weight: 1300 portions of slurry 1250-.
Preferably, the autoclaved aerated concrete plate comprises the following components in parts by weight: 1280 parts of slurry, 400 parts of waste slurry, 230 parts of lime, 590 parts of cement, 2.9 parts of aluminum paste, 0.8 part of gas former and 0.5 part of foam stabilizer; the gas former is one of magnesium, aluminum zinc alloy, silicon iron alloy, hydrogen peroxide and calcium carbide; the foam stabilizer is one of silicone polyether emulsion, polyacrylamide and polyvinyl alcohol; the water content of the slurry is 20-30%; the water content of the waste slurry is 25-35%.
Preferably, the slurry comprises the following dry materials in parts by weight: 15-20 parts of silica fume, 1-3 parts of crystal white sand, 2-5 parts of attapulgite, 1-2 parts of fluorgypsum, 2-5 parts of calcite powder, 10-20 parts of volcanic ash, 0.5-1 part of rare earth organic metal framework and 1-3 parts of functional cellulose fiber based on beta-cyclodextrin; the preparation method of the functional cellulose fiber based on the beta-cyclodextrin is disclosed in the Chinese patent application No. 201811370294.1, example 1; the preparation method of the rare earth organic metal framework is disclosed in Chinese patent application No. 201210245269.7, example 1; the waste slurry comprises the following solid wastes in parts by weight: 2-5 parts of fly ash, 4-8 parts of blast furnace slag, 1-3 parts of desulfurized fly ash and 10-20 parts of stone powder.
Preferably, the cement is at least one of ordinary portland cement, portland slag cement, portland pozzolanic cement and portland fly ash cement; the aluminum paste is formed by melting aluminum powder at the temperature of 740 ℃ of 680-fold under the condition of nitrogen or inert gas by taking graphene as a carrier and staying in gaps of the graphene for grinding; the inert gas is any one of helium, neon and argon.
The invention also aims to provide a preparation method of the autoclaved aerated concrete plate, which comprises the following steps: mixing the components in parts by weight, uniformly stirring, pouring the obtained slurry into a mold, statically maintaining the mold until the slurry is thickened into a blank with the strength of more than 0.1MPa, and statically maintaining the mold for 1.2 to 2.2 hours; then peeling and scraping the blank body, vertically cutting two side surfaces of the blank body, then longitudinally and horizontally cutting the blank body, and finally transversely and vertically cutting the blank body; then sending the cut embryo body into an autoclave for steam curing for 5-8 hours at the temperature of 180-; and finally, gradually cooling to room temperature and taking out to obtain the autoclaved aerated concrete plate.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the autoclaved aerated concrete plate provided by the invention has the advantages of excellent comprehensive performance, light weight, more excellent compressive strength, heat preservation performance and drying shrinkage performance, and better comprehensive performance. Meanwhile, the invention also provides a preparation method of the autoclaved aerated concrete slab, which is simple and feasible, convenient to operate and control, high in preparation efficiency and suitable for industrial production.
The invention will be further described with reference to specific examples, but the scope of protection of the invention is not limited thereto:
example 1
The embodiment 1 provides an autoclaved aerated concrete plate which is characterized by comprising the following components in parts by weight: 1250 parts of slurry, 380 parts of waste slurry, 220 parts of lime, 580 parts of cement, 2.8 parts of aluminum paste, 0.5 part of gas former and 0.3 part of foam stabilizer.
The gas generating agent is magnesium, aluminum zinc alloy; the foam stabilizer is silicone polyether emulsion.
The water content of the slurry is 20%; the water content of the waste slurry was 25%.
The slurry comprises the following dry materials in parts by weight: 15 parts of silica fume, 1 part of crystalline white sand, 2 parts of attapulgite, 1 part of fluorgypsum, 2 parts of calcite powder, 10 parts of volcanic ash, 0.5 part of rare earth organic metal framework and 1 part of beta-cyclodextrin-based functional cellulose fiber.
The waste slurry comprises the following solid wastes in parts by weight: 2 parts of fly ash, 4 parts of blast furnace slag, 1 part of desulfurized ash and 10 parts of stone powder.
The cement is ordinary portland cement.
The aluminum paste is formed by melting aluminum powder at 680 ℃ by taking graphene as a carrier under the condition of nitrogen, and staying in gaps of the graphene for grinding.
A preparation method of an autoclaved aerated concrete plate comprises the following steps: mixing the components in parts by weight, uniformly stirring, pouring the obtained slurry into a mold, statically curing the slurry until the slurry is thickened into a blank with the strength of more than 0.1MPa, and statically curing the blank for 1.2 hours; then peeling and scraping the blank body, vertically cutting two side surfaces of the blank body, then longitudinally and horizontally cutting the blank body, and finally transversely and vertically cutting the blank body; then feeding the cut blank into a still kettle for steam curing for 5 hours at the temperature of 180 ℃; and finally, gradually cooling to room temperature and taking out to obtain the autoclaved aerated concrete plate.
Example 2
Example 2 provides an autoclaved aerated concrete slab, which has a formulation and a preparation method substantially the same as those of example 1, except that the autoclaved aerated concrete slab comprises the following components in parts by weight: 1280 parts of slurry, 400 parts of waste slurry, 230 parts of lime, 590 parts of cement, 2.9 parts of aluminum paste, 0.8 part of gas former and 0.5 part of foam stabilizer; the slurry comprises the following dry materials in parts by weight: 16 parts of silica fume, 1.5 parts of crystalline white sand, 2.5 parts of attapulgite, 1.2 parts of fluorgypsum, 3 parts of calcite powder, 13 parts of volcanic ash, 0.6 part of rare earth organic metal framework and 1.5 parts of functional cellulose fiber based on beta-cyclodextrin; the waste slurry comprises the following solid wastes in parts by weight: 3 parts of fly ash, 5 parts of blast furnace slag, 1.5 parts of desulfurized fly ash and 13 parts of stone powder.
Example 3
Example 3 provides an autoclaved aerated concrete slab, which has substantially the same formulation and preparation method as example 1, except that the autoclaved aerated concrete slab comprises the following components in parts by weight: comprises the following components in parts by weight: 1265 parts of slurry, 390 parts of waste slurry, 225 parts of lime, 585 parts of cement, 2.9 parts of aluminum paste, 0.6 part of gas former and 0.4 part of foam stabilizer; the slurry comprises the following dry materials in parts by weight: 17 parts of silica fume, 1.5 parts of crystalline white sand, 3 parts of attapulgite, 1.5 parts of fluorgypsum, 3.5 parts of calcite powder, 15 parts of volcanic ash, 0.7 part of rare earth organic metal framework and 2 parts of functional cellulose fiber based on beta-cyclodextrin; the waste slurry comprises the following solid wastes in parts by weight: 3.5 parts of fly ash, 6 parts of blast furnace slag, 2 parts of desulfurized ash and 15 parts of stone powder.
Example 4
Example 4 provides an autoclaved aerated concrete slab, which has substantially the same formulation and preparation method as example 1, except that the autoclaved aerated concrete slab comprises the following components in parts by weight: comprises the following components in parts by weight: 1290 parts of slurry, 410 parts of waste slurry, 235 parts of lime, 595 parts of cement, 3.0 parts of aluminum paste, 0.9 part of gas former and 0.6 part of foam stabilizer; the slurry comprises the following dry materials in parts by weight: 19 parts of silica fume, 2.5 parts of crystalline white sand, 4.5 parts of attapulgite, 1.9 parts of fluorgypsum, 4.5 parts of calcite powder, 18 parts of volcanic ash, 0.9 part of rare earth organic metal framework and 2.5 parts of functional cellulose fiber based on beta-cyclodextrin; the waste slurry comprises the following solid wastes in parts by weight: 4.5 parts of fly ash, 7 parts of blast furnace slag, 2.5 parts of desulfurized fly ash and 18 parts of stone powder.
Example 5
Example 5 provides an autoclaved aerated concrete slab, which has substantially the same formulation and preparation method as example 1, except that the autoclaved aerated concrete slab comprises the following components in parts by weight: comprises the following components in parts by weight: 1300 parts of slurry, 420 parts of waste slurry, 240 parts of lime, 600 parts of cement, 3.1 parts of aluminum paste, 1 part of gas former and 0.7 part of foam stabilizer; the slurry comprises the following dry materials in parts by weight: 20 parts of silica fume, 3 parts of crystalline white sand, 5 parts of attapulgite, 2 parts of fluorgypsum, 5 parts of calcite powder, 20 parts of volcanic ash, 1 part of rare earth organic metal framework and 3 parts of beta-cyclodextrin-based functional cellulose fiber; the waste slurry comprises the following solid wastes in parts by weight: 5 parts of fly ash, 8 parts of blast furnace slag, 3 parts of desulfurized ash and 20 parts of stone powder.
Comparative example 1
Comparative example 1 provides an autoclaved aerated concrete panel, the formulation and preparation method of which are substantially the same as those of example 1, except that no silica fume or attapulgite is added.
Comparative example 2
Comparative example 2 provides an autoclaved aerated concrete panel having substantially the same formulation and preparation method as example 1, except that no white sand or fluorgypsum was added.
Comparative example 3
Comparative example 3 provides an autoclaved aerated concrete panel having substantially the same formulation and preparation method as in example 1, except that the functional cellulose fiber based on beta-cyclodextrin without the addition of a rare earth organometallic framework.
Comparative example 4
Comparative example 4 provides an autoclaved aerated concrete slab, the formulation and preparation method of which are substantially the same as those of example 1, except that calcite powder and volcanic ash are not added.
Comparative example 5
Comparative example 5 provides an autoclaved aerated concrete panel, the formulation and preparation method of which are substantially the same as those of example 1, except that blast furnace slag and desulfurized fly ash are not added.
Product performance testing of the above examples and comparative examples; the test results are shown in table 1; the test method is as follows:
(1) and (3) testing the compressive strength: preparing a cube-shaped sample with the specification of 100mm multiplied by 100mm, and placing the sample at the center position of a lower pressing plate of a material testing machine, wherein the pressure direction of the sample is vertical to the gas generating direction of the product; starting the material testing machine, and adjusting the ball seat to make the contact balanced when the upper pressure plate is close to the sample; continuously and uniformly loading at the speed of 2.0 +/-0.5 until the sample is destroyed, and recording the destruction load;
(2) coefficient of thermal conductivity: according to the standard GB/T13475-2008 'determination-calibration and protection hot box method for the steady-state heat transfer property of the building component', the calibration hot box method is used for calculating the heat transfer coefficient of the wall;
(3) dry density: taking a cubic sample of 100mm multiplied by 100mm, calculating the volume of the sample, weighing the mass of the sample, and calculating the dry density of the sample;
(4) drying shrinkage test: refer to GB/T11969-2008 'test method for autoclaved aerated concrete Performance'.
TABLE 1
As can be seen from the above table, the autoclaved aerated concrete slab disclosed in the embodiment of the invention has better compressive strength and thermal insulation performance, smaller shrinkage rate and lighter weight, which is a result of synergistic effect of the components.
The above-mentioned embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The autoclaved aerated concrete plate is characterized by comprising the following components in parts by weight: 1300 portions of slurry 1250-.
2. The autoclaved aerated concrete slab as claimed in claim 1, wherein the autoclaved aerated concrete slab comprises the following components in parts by weight: 1280 parts of slurry, 400 parts of waste slurry, 230 parts of lime, 590 parts of cement, 2.9 parts of aluminum paste, 0.8 part of gas former and 0.5 part of foam stabilizer.
3. The autoclaved aerated concrete panel according to claim 1, wherein the gas former is one of magnesium, aluminum zinc alloy, silicon iron alloy, hydrogen peroxide and calcium carbide.
4. The autoclaved aerated concrete panel according to claim 1, wherein the foam stabilizer is one of silicone polyether emulsion, polyacrylamide and polyvinyl alcohol.
5. The autoclaved aerated concrete slab as claimed in claim 1, wherein the water content of the slurry is 20-30%; the water content of the waste slurry is 25-35%.
6. The autoclaved aerated concrete slab as claimed in claim 1, wherein the slurry comprises the following dry materials in parts by weight: 15-20 parts of silica fume, 1-3 parts of crystal white sand, 2-5 parts of attapulgite, 1-2 parts of fluorgypsum, 2-5 parts of calcite powder, 10-20 parts of volcanic ash, 0.5-1 part of rare earth organic metal framework and 1-3 parts of functional cellulose fiber based on beta-cyclodextrin.
7. The autoclaved aerated concrete slab as claimed in claim 1, wherein the waste slurry comprises the following solid wastes in parts by weight: 2-5 parts of fly ash, 4-8 parts of blast furnace slag, 1-3 parts of desulfurized fly ash and 10-20 parts of stone powder.
8. The autoclaved aerated concrete panel according to claim 1, wherein the cement is at least one of ordinary portland cement, portland slag cement, portland pozzolan cement, and portland fly ash cement.
9. The autoclaved aerated concrete plate as claimed in claim 1, wherein the aluminum paste is prepared by using graphene as a carrier, melting aluminum powder at 680-740 ℃ under the condition of nitrogen or inert gas, and staying in gaps of the graphene for grinding; the inert gas is any one of helium, neon and argon.
10. The autoclaved aerated concrete slab as claimed in any one of claims 1 to 9, wherein the preparation method of the autoclaved aerated concrete slab comprises the following steps: mixing the components in parts by weight, uniformly stirring, pouring the obtained slurry into a mold, statically maintaining the mold until the slurry is thickened into a blank with the strength of more than 0.1MPa, and statically maintaining the mold for 1.2 to 2.2 hours; then peeling and scraping the blank body, vertically cutting two side surfaces of the blank body, then longitudinally and horizontally cutting the blank body, and finally transversely and vertically cutting the blank body; then sending the cut embryo body into an autoclave for steam curing for 5-8 hours at the temperature of 180-; and finally, gradually cooling to room temperature and taking out to obtain the autoclaved aerated concrete plate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113716924A (en) * | 2021-07-27 | 2021-11-30 | 中北大学 | Autoclaved aerated concrete block and preparation method thereof |
| CN113880600A (en) * | 2021-11-10 | 2022-01-04 | 山东鲁碧建材有限公司 | Preparation method of aerated sheet material |
| CN115466092A (en) * | 2022-09-24 | 2022-12-13 | 四川滨水上锦绿色建材有限公司 | Preparation method of autoclaved aerated concrete plate and prepared plate |
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