CN116606114A - Autoclaved aerated concrete plate and preparation method thereof - Google Patents
Autoclaved aerated concrete plate and preparation method thereof Download PDFInfo
- Publication number
- CN116606114A CN116606114A CN202310562432.0A CN202310562432A CN116606114A CN 116606114 A CN116606114 A CN 116606114A CN 202310562432 A CN202310562432 A CN 202310562432A CN 116606114 A CN116606114 A CN 116606114A
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- CN
- China
- Prior art keywords
- aerated concrete
- steel bars
- reinforcing steel
- autoclaved aerated
- slurry
- Prior art date
- 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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- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 26
- 239000002002 slurry Substances 0.000 claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000003755 preservative agent Substances 0.000 claims abstract description 17
- 230000002335 preservative effect Effects 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 238000010025 steaming Methods 0.000 claims abstract description 14
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 12
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 12
- 239000004571 lime Substances 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004816 latex Substances 0.000 claims abstract description 7
- 229920000126 latex Polymers 0.000 claims abstract description 7
- 239000006004 Quartz sand Substances 0.000 claims abstract description 6
- 239000004615 ingredient Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000005260 corrosion Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- FDYSSWYQRTVFIS-UHFFFAOYSA-N buta-1,3-diene 3-phenylprop-2-enoic acid Chemical group C=CC=C.C(=O)(O)C=CC1=CC=CC=C1 FDYSSWYQRTVFIS-UHFFFAOYSA-N 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 230000029087 digestion Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 8
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 239000010451 perlite Substances 0.000 description 4
- 235000019362 perlite Nutrition 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007582 slurry-cast process Methods 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
- C04B28/14—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 calcium sulfate cements
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
The invention discloses an autoclaved aerated concrete plate and a preparation method thereof, wherein the plate comprises the following raw materials by mass: 20-22% of cement, 10-12% of lime, 15-17% of waste slurry, 0.8-1.2% of quartz sand, 0.1-0.15% of aluminum powder paste, and steel bar preservative, wherein the steel bar preservative is high-temperature-resistant anti-corrosion latex, and the preparation method comprises the following steps: and (3) a step of: preparing slurry, mixing and stirring the components with water in corresponding proportions, standing for 5-10min after mixing, and uniformly mixing again; and II: pouring and molding, namely presetting reinforcing steel bars in a mold, smearing preservative on the reinforcing steel bars, pouring the evenly stirred slurry into the mold, and burying the reinforcing steel bars in ingredients; thirdly,: standing and maintaining; fourth, the method comprises the following steps: cutting, and fifthly: steaming; sixth,: and (5) obtaining a finished product. The autoclaved aerated concrete plate and the preparation method thereof are beneficial to rapid raw material allocation, are convenient to prepare and use the aerated concrete plate, are convenient to improve the structural strength of the aerated concrete by adding the reinforcing steel bars, and ensure the production and processing efficiency.
Description
Technical Field
The invention relates to the technical field of aerated concrete, in particular to an autoclaved aerated concrete slab and a preparation method thereof.
Background
With the development of socialization, the environmental protection requirement of building materials is higher and higher, and more reinforced concrete plates in the building are replaced by more environment-friendly autoclaved aerated concrete plates; autoclaved aerated concrete has various characteristics of heat preservation, sound insulation, light weight, fire resistance and the like, and autoclaved sand aerated concrete slabs are widely applied to building roofs, outer walls, inner walls and floors at present;
under the background of the prior art, an autoclaved aerated concrete slab is proposed in Chinese patent application publication No. CN104311106A, and belongs to the field of building materials. The autoclaved aerated concrete plate is calculated by plates of each cubic meter and comprises the following raw materials by mass: 70-125Kg of lime, 75-95Kg of cement, 0.3-0.45Kg of aluminum powder and 260-390Kg of ceramic polishing waste. The preparation method comprises the steps of preparing slurry, injection molding, precuring, cutting a blank, autoclaved curing and discharging from a kettle. The invention takes the ceramic polished tile waste as the main raw material, fully utilizes the ceramic polished tile waste, and has obvious environmental benefit; the invention belongs to self-heat-preservation plates, and has high durability and high strength;
as another example, the Chinese patent application publication number CN108585653A discloses an autoclaved aerated concrete plate and a forming process thereof, which are applied to the field of building materials, and solve the technical problem that the surface of a high-strength granite concrete plate in the prior art is rough and has use limitation, and the technical scheme is characterized by comprising the following components in parts by weight: 100-110 parts of cement, 125-140 parts of quicklime, 600-610 parts of fly ash, 6-10 parts of aerated aluminum paste, 200-230 parts of expanded perlite and 30-40 parts of powder filler, wherein the expanded perlite and the powder filler are added into the cement, the quicklime, the fly ash and the aerated aluminum paste, and the powder filler can be filled in the gaps of the expanded perlite and can fill the gaps between adjacent expanded perlite, thereby being beneficial to preparing autoclaved aerated concrete plates with uniform texture and smooth surface and remarkably improving the use universality of the plates;
the structural strength of the existing autoclaved aerated concrete plate is not beneficial to ensuring that different use requirements are met and improving the production efficiency when the production and the preparation of the plate are carried out, so that the autoclaved aerated concrete plate and the preparation method thereof are provided so as to solve the problems.
Disclosure of Invention
The invention aims to provide an autoclaved aerated concrete plate and a preparation method thereof, which are used for solving the problems that the structural strength of the existing autoclaved aerated concrete plate and the preparation method thereof are not beneficial to ensuring that different use requirements are met and improving the production efficiency when the production and the preparation of the plate are carried out.
In order to achieve the above purpose, the present invention provides the following technical solutions: an autoclaved aerated concrete plate, which comprises the following raw materials by mass: 20-22% of cement, 10-12% of lime, 15-17% of waste slurry, 0.8-1.2% of quartz sand, 0.1-0.15% of aluminum powder paste and reinforcing steel bars and reinforcing steel bar preservative.
Preferably, the solid content of the aluminum powder paste is more than or equal to 66%, the active aluminum content is more than or equal to 85.8%, the sieving fineness of the aluminum powder paste after passing through 0.075mm is less than or equal to 0.5%, and the gas generation rate is 51% in 4 min; 16min is not less than 82%;30min is more than or equal to 100 percent.
Preferably, the steel bars are 4 phi 5 reinforcing bars, 4 longitudinal steel bars are arranged at a distance of less than 150mm, and the distance between transverse steel bars is less than or equal to 550mm.
Preferably, the effective calcium oxide of the lime is 82%, the digestion time is 9 minutes, the highest temperature is 96 ℃, and the screen residue of the 0.08 mm-hole screen is 10%.
Preferably, the steel bar preservative is high-temperature-resistant anti-corrosion latex, and the steel bar preservative is carboxyl styrene-butadiene (resin) latex.
The invention provides another technical scheme that: a method for preparing an autoclaved aerated concrete plate, comprising the following steps:
step one: preparing slurry, mixing and stirring the components with water in corresponding proportions, standing for 5-10min after mixing, and uniformly mixing again;
step two: pouring and molding, namely presetting reinforcing steel bars in a mold, smearing preservative on the reinforcing steel bars, pouring the evenly stirred slurry into the mold, and burying the reinforcing steel bars in ingredients;
step three: standing for curing, and conveying the mold for casting the slurry into a curing room for gas generating and curing to obtain an aerated concrete blank;
step four: cutting, namely vertically and horizontally cutting the cured aerated concrete;
step five: steaming, namely putting the cut plate into an autoclave for steaming;
step six: and (5) cooling to room temperature after steaming and taking out the finished product.
Preferably, the slurry casting temperature in the second step is 40-45 ℃.
Compared with the prior art, the invention has the beneficial effects that: the autoclaved aerated concrete plate and the preparation method thereof are beneficial to rapid raw material allocation, are convenient to prepare and use the aerated concrete plate, are convenient to improve the structural strength of the aerated concrete by adding the reinforcing steel bars, and ensure the production and processing efficiency.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme that: an autoclaved aerated concrete plate, which comprises the following raw materials by mass: 20-22% of cement, 10-12% of lime, 15-17% of waste slurry, 0.8-1.2% of quartz sand, 0.1-0.15% of aluminum powder paste and reinforcing steel bars and reinforcing steel bar preservative.
Further, the solid content of the aluminum powder paste is more than or equal to 66%, the active aluminum content is more than or equal to 85.8%, the sieving fineness of the aluminum powder paste after passing through 0.075mm is less than or equal to 0.5%, and the gas generation rate is 51% in 4 min; 16min is not less than 82%;30min is more than or equal to 100 percent.
Furthermore, the steel bars are 4 phi 5 reinforced bars, 4 longitudinal steel bars are arranged at a distance of less than 150mm, and the distance between transverse steel bars is less than or equal to 550mm.
Further, the effective calcium oxide of the lime is 82%, the digestion time is 9 minutes, the highest temperature is 96 ℃, and the screen residue of the 0.08 mm-hole screen is 10%.
Further, the steel bar preservative is high-temperature-resistant anti-corrosion latex, and the steel bar preservative is carboxyl styrene-butadiene (resin) latex.
A method for preparing an autoclaved aerated concrete plate, comprising the following steps:
step one: preparing slurry, mixing and stirring the components with water in corresponding proportions, standing for 5-10min after mixing, and uniformly mixing again;
step two: pouring and molding, namely presetting reinforcing steel bars in a mold, smearing preservative on the reinforcing steel bars, pouring the evenly stirred slurry into the mold, and burying the reinforcing steel bars in ingredients;
step three: standing for curing, and conveying the mold for casting the slurry into a curing room for gas generating and curing to obtain an aerated concrete blank;
step four: cutting, namely vertically and horizontally cutting the cured aerated concrete;
step five: steaming, namely putting the cut plate into an autoclave for steaming;
step six: and (5) cooling to room temperature after steaming and taking out the finished product.
Further, the casting temperature of the slurry in the second step is 40-45 DEG C
Example 1:
firstly, preparing 2500kg of total materials, 10-12% of lime, 20-22% of cement, 49-55% of slurry proportion, 15-17% of waste slurry and 2.8kg of aluminum paste, wherein the water-material ratio is 0.62-0.64, and the pouring diffusivity is 32-34cm;
2500kg of concrete total materials, 11.3% of lime, 20.5% of cement, 51.2% of quartz sand and gypsum, 16.7% of waste slurry and 2.8kg of aluminum paste, wherein the water-material ratio is 0.62, and the pouring diffusivity is 32cm;
after the uniform mixing configuration is completed, presetting reinforcing steel bars in a mould, smearing a preservative on the reinforcing steel bars, pouring the uniformly mixed slurry into the mould at the pouring temperature of 41 ℃ to enable the reinforcing steel bars to be buried in the ingredients, and sending the mould for pouring the slurry into a curing chamber for air-generating and curing to obtain an aerated concrete blank;
and (3) vertically and horizontally cutting the cured aerated concrete, putting the cut plate into an autoclave for steaming, cooling to room temperature after steaming, and taking out to form the autoclaved aerated concrete plate of B05A3.5.
Example 2:
firstly, preparing 3000kg of total materials, 10-12% of lime, 18-20% of cement, 51-57% of slurry proportion, 15-17% of waste slurry and 2.6kg of aluminum powder paste, wherein the water-material ratio is 0.58-0.6, and the diffusivity is 30-32cm;
2500kg of concrete total materials, 11.5% of lime, 19.3% of cement, 54% of quartz sand and gypsum, 16.3% of waste slurry and 2.6kg of aluminum paste, wherein the water-material ratio is 0.59, and the pouring diffusivity is 31cm;
after the uniform mixing configuration is completed, presetting reinforcing steel bars in a mould, smearing a preservative on the reinforcing steel bars, pouring the uniformly mixed slurry into the mould at the pouring temperature of 43 ℃ to enable the reinforcing steel bars to be buried in the ingredients, and sending the mould for pouring the slurry into a curing chamber for air-generating and curing to obtain an aerated concrete blank;
and (3) vertically and horizontally cutting the cured aerated concrete, putting the cut plate into an autoclave for steaming, cooling to room temperature after steaming, and taking out to form the autoclaved aerated concrete plate of B06A5.0.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (7)
1. An autoclaved aerated concrete slab, which is characterized in that: the plate comprises the following raw materials by mass: 20-22% of cement, 10-12% of lime, 15-17% of waste slurry, 0.8-1.2% of quartz sand, 0.1-0.15% of aluminum powder paste and reinforcing steel bars and reinforcing steel bar preservative.
2. An autoclaved aerated concrete slab as recited in claim 1 wherein: the solid content of the aluminum powder paste is more than or equal to 66%, the active aluminum content is more than or equal to 85.8%, the sieving fineness of the aluminum powder paste is less than or equal to 0.5% after passing through 0.075mm, and the gas generation rate is 51% after 4 min; 16min is not less than 82%;30min is more than or equal to 100 percent.
3. An autoclaved aerated concrete slab as recited in claim 1 wherein: the steel bars are 4 phi 5 reinforced bars, the distance between the longitudinal steel bars is less than 150mm, and the distance between the transverse steel bars is less than or equal to 550mm.
4. An autoclaved aerated concrete slab as recited in claim 1 wherein: the effective calcium oxide of the lime is 82%, the digestion time is 9 minutes, the highest temperature is 96 ℃, and the screen residue of the 0.08 mm-hole screen is 10%.
5. An autoclaved aerated concrete slab as recited in claim 1 wherein: the steel bar preservative is high-temperature-resistant anti-corrosion latex, and the steel bar preservative is carboxyl styrene-butadiene (resin) latex.
6. A method of preparing an autoclaved aerated concrete slab as recited in claim 1 wherein: the preparation method comprises the following steps:
step one: preparing slurry, mixing and stirring the components with water in corresponding proportions, standing for 5-10min after mixing, and uniformly mixing again;
step two: pouring and molding, namely presetting reinforcing steel bars in a mold, smearing preservative on the reinforcing steel bars, pouring the evenly stirred slurry into the mold, and burying the reinforcing steel bars in ingredients;
step three: standing for curing, and conveying the mold for casting the slurry into a curing room for gas generating and curing to obtain an aerated concrete blank;
step four: cutting, namely vertically and horizontally cutting the cured aerated concrete;
step five: steaming, namely putting the cut plate into an autoclave for steaming;
step six: and (5) cooling to room temperature after steaming and taking out the finished product.
7. The method for preparing the autoclaved aerated concrete slab as recited in claim 6, wherein: and in the second step, the casting temperature of the slurry is 40-45 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310562432.0A CN116606114A (en) | 2023-05-18 | 2023-05-18 | Autoclaved aerated concrete plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310562432.0A CN116606114A (en) | 2023-05-18 | 2023-05-18 | Autoclaved aerated concrete plate and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116606114A true CN116606114A (en) | 2023-08-18 |
Family
ID=87675852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310562432.0A Pending CN116606114A (en) | 2023-05-18 | 2023-05-18 | Autoclaved aerated concrete plate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116606114A (en) |
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2023
- 2023-05-18 CN CN202310562432.0A patent/CN116606114A/en active Pending
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