CN113773034A - Autoclaved aerated concrete precast slab and production method thereof - Google Patents
Autoclaved aerated concrete precast slab and production method thereof Download PDFInfo
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- CN113773034A CN113773034A CN202111078613.3A CN202111078613A CN113773034A CN 113773034 A CN113773034 A CN 113773034A CN 202111078613 A CN202111078613 A CN 202111078613A CN 113773034 A CN113773034 A CN 113773034A
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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
- C04B28/14—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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/144—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an autoclaved aerated concrete precast slab and a production method thereof, wherein the autoclaved aerated concrete precast slab comprises the following raw materials: cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer. The autoclaved aerated concrete precast slab prepared by using cement, quick lime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer as raw materials through a special production process has excellent performance, and the service life of the autoclaved aerated concrete precast slab is effectively prolonged.
Description
Technical Field
The invention particularly relates to the technical field of autoclaved aerated concrete precast slabs, and particularly relates to an autoclaved aerated concrete precast slab and a production method thereof.
Background
The autoclaved aerated concrete slab is a green environment-friendly building material which takes siliceous materials such as cement, lime, silica sand and the like as main raw materials and is added with different numbers of steel bar meshes subjected to antiseptic treatment according to the structural requirements. It is cured at high temperature and high pressure and steam to form porous crystal with excellent fireproof, sound isolating, heat isolating and heat insulating performance.
With the continuous improvement of the requirements on building materials in building design, the performances of the autoclaved aerated concrete slab in the prior art in the aspects of physical strength, heat insulation and preservation and the like cannot well meet the requirements, and the production operation rules of the autoclaved aerated concrete slab are to be standardized so as to improve the service performance of the autoclaved aerated concrete slab.
Disclosure of Invention
The invention aims to provide a production method of an autoclaved aerated concrete precast slab, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an autoclaved aerated concrete precast slab comprises the following raw materials in parts by weight: 30-60 parts of cement, 20-30 parts of quick lime, 10-20 parts of hydrated lime, 5-8 parts of desulfurized gypsum, 6-12 parts of dry aluminum powder, 6-9 parts of kaolin, 4-12 parts of quartz sand and 3-6 parts of stabilizer.
Further scheme: the feed additive comprises the following raw materials in parts by weight: 40-50 parts of cement, 22-28 parts of quick lime, 11-19 parts of hydrated lime, 6-8 parts of desulfurized gypsum, 7-10 parts of dry aluminum powder, 5-9 parts of kaolin, 6-10 parts of quartz sand and 4-6 parts of stabilizer.
Further scheme: the feed additive comprises the following raw materials in parts by weight: 45 parts of cement, 25 parts of quicklime, 16 parts of slaked lime, 7 parts of desulfurized gypsum, 8 parts of dry aluminum powder, 6 parts of kaolin, 8 parts of quartz sand and 5 parts of stabilizer.
Further scheme: the stabilizer is one or more of alkylolamide and amine oxide.
A production method of an autoclaved aerated concrete precast slab comprises the following steps:
s1, preparing materials: weighing cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer in parts by weight for later use;
s2, preparing slurry: adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, fully and uniformly stirring, adding cement, quicklime and slaked lime, adding water while stirring, fully stirring, and adding a stabilizer to obtain slurry;
s3, molding:
s31, pouring the prepared slurry into a prepared concrete plate mold, and standing after the liquid level of the slurry is flat;
s32, inserting a reinforcing mesh into the concrete mould filled with the slurry, and standing after the reinforcing mesh is completely immersed in the slurry to obtain a blank;
s4, maintenance: and (3) demolding and cutting the blank after the blank reaches the strength, and finally curing to obtain the autoclaved aerated concrete precast slab.
Further scheme:
in step S2, the slurry preparation specifically includes:
s21, adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, and stirring for 1-2 hours until all the raw materials are fully mixed to obtain a mixture;
and S22, adding cement, quicklime and hydrated lime into the fully stirred mixture, adding water while stirring, adding a stabilizer after stirring for 1-3h, and continuously stirring for 10-30min to obtain the slurry.
Further scheme:
in step S22, the weight of the water is 10-18% of the total weight of the cement, the quicklime, the hydrated lime, the desulfurized gypsum, the dry aluminum powder, the kaolin, the quartz sand and the stabilizer.
Further scheme:
in step S4, the concrete step of curing includes:
s41, primary curing: heating the blank to 25-28 ℃, preserving heat for 3-4h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished;
s42, secondary curing: heating the blank to 43-48 deg.C, maintaining the temperature for 4-6h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted.
Compared with the prior art, the invention has the beneficial effects that: the autoclaved aerated concrete precast slab prepared by using cement, quick lime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer as raw materials through a special production process has excellent performance, and the service life of the autoclaved aerated concrete precast slab is effectively prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An autoclaved aerated concrete precast slab comprises the following raw materials in parts by weight: 30 parts of cement, 20 parts of quicklime, 10 parts of slaked lime, 5 parts of desulfurized gypsum, 6 parts of dry aluminum powder, 6 parts of kaolin, 4 parts of quartz sand and 3 parts of stabilizer.
Further scheme: the stabilizer is alkylolamide.
A production method of an autoclaved aerated concrete precast slab comprises the following steps:
s1, preparing materials: weighing cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer in parts by weight for later use;
s2, preparing slurry: adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, fully and uniformly stirring, adding cement, quicklime and slaked lime, adding water while stirring, fully stirring, and adding a stabilizer to obtain slurry;
s3, molding:
s31, pouring the prepared slurry into a prepared concrete plate mold, and standing after the liquid level of the slurry is flat;
s32, inserting a reinforcing mesh into the concrete mould filled with the slurry, and standing after the reinforcing mesh is completely immersed in the slurry to obtain a blank;
s4, maintenance: and (3) demolding and cutting the blank after the blank reaches the strength, and finally curing to obtain the autoclaved aerated concrete precast slab.
Further scheme:
in step S2, the slurry preparation specifically includes:
s21, adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, and stirring for 1h until all the raw materials are fully mixed to obtain a mixture;
and S22, adding cement, quicklime and hydrated lime into the fully stirred mixture, adding water while stirring, adding the stabilizer after stirring for 1h, and continuously stirring for 10min to obtain the slurry.
Further scheme:
in step S22, the water is added in an amount of 10% by weight based on the total weight of the cement, the quicklime, the slaked lime, the desulfurized gypsum, the dry aluminum powder, the kaolin, the quartz sand and the stabilizer.
Further scheme:
in step S4, the concrete step of curing includes:
s41, primary curing: heating the blank to 25 ℃, preserving heat for 3 hours, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished;
s42, secondary curing: heating the blank to 43 ℃, preserving heat for 4h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished.
Example 2
An autoclaved aerated concrete precast slab comprises the following raw materials in parts by weight: 60 parts of cement, 30 parts of quick lime, 20 parts of slaked lime, 8 parts of desulfurized gypsum, 12 parts of dry aluminum powder, 9 parts of kaolin, 12 parts of quartz sand and 6 parts of stabilizer.
Further scheme: the stabilizer is amine oxide.
A production method of an autoclaved aerated concrete precast slab comprises the following steps:
s1, preparing materials: weighing cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer in parts by weight for later use;
s2, preparing slurry: adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, fully and uniformly stirring, adding cement, quicklime and slaked lime, adding water while stirring, fully stirring, and adding a stabilizer to obtain slurry;
s3, molding:
s31, pouring the prepared slurry into a prepared concrete plate mold, and standing after the liquid level of the slurry is flat;
s32, inserting a reinforcing mesh into the concrete mould filled with the slurry, and standing after the reinforcing mesh is completely immersed in the slurry to obtain a blank;
s4, maintenance: and (3) demolding and cutting the blank after the blank reaches the strength, and finally curing to obtain the autoclaved aerated concrete precast slab.
Further scheme:
in step S2, the slurry preparation specifically includes:
s21, adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, and stirring for 2 hours until all the raw materials are fully mixed to obtain a mixture;
and S22, adding cement, quicklime and hydrated lime into the fully stirred mixture, adding water while stirring, adding a stabilizer after stirring for 1-3h, and continuously stirring for 30min to obtain the slurry.
Further scheme:
in step S22, the weight of water added is 18% of the total weight of cement, quicklime, hydrated lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and stabilizer.
Further scheme:
in step S4, the concrete step of curing includes:
s41, primary curing: heating the blank to 28 ℃, preserving heat for 4 hours, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished;
s42, secondary curing: heating the blank to 48 ℃, preserving heat for 6h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished.
Example 3
An autoclaved aerated concrete precast slab comprises the following raw materials in parts by weight: 40 parts of cement, 22-parts of quick lime, 11 parts of slaked lime, 6 parts of desulfurized gypsum, 7 parts of dry aluminum powder, 5 parts of kaolin, 6 parts of quartz sand and 4 parts of stabilizing agent.
Further scheme: the stabilizer is alkylolamide.
A production method of an autoclaved aerated concrete precast slab comprises the following steps:
s1, preparing materials: weighing cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer in parts by weight for later use;
s2, preparing slurry: adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, fully and uniformly stirring, adding cement, quicklime and slaked lime, adding water while stirring, fully stirring, and adding a stabilizer to obtain slurry;
s3, molding:
s31, pouring the prepared slurry into a prepared concrete plate mold, and standing after the liquid level of the slurry is flat;
s32, inserting a reinforcing mesh into the concrete mould filled with the slurry, and standing after the reinforcing mesh is completely immersed in the slurry to obtain a blank;
s4, maintenance: and (3) demolding and cutting the blank after the blank reaches the strength, and finally curing to obtain the autoclaved aerated concrete precast slab.
Further scheme:
in step S2, the slurry preparation specifically includes:
s21, adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, and stirring for 1h until all the raw materials are fully mixed to obtain a mixture;
and S22, adding cement, quicklime and hydrated lime into the fully stirred mixture, adding water while stirring, adding the stabilizer after stirring for 1h, and continuously stirring for 10min to obtain the slurry.
Further scheme:
in step S22, the water is added in an amount of 10% by weight based on the total weight of the cement, the quicklime, the slaked lime, the desulfurized gypsum, the dry aluminum powder, the kaolin, the quartz sand and the stabilizer.
Further scheme:
in step S4, the concrete step of curing includes:
s41, primary curing: heating the blank to 25 ℃, preserving heat for 3 hours, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished;
s42, secondary curing: heating the blank to 43 ℃, preserving heat for 4h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished.
Example 4
An autoclaved aerated concrete precast slab comprises the following raw materials in parts by weight: 50 parts of cement, 28 parts of quick lime, 19 parts of hydrated lime, 8 parts of desulfurized gypsum, 10 parts of dry aluminum powder, 9 parts of kaolin, 10 parts of quartz sand and 6 parts of stabilizing agent.
Further scheme: the stabilizer is amine oxide.
A production method of an autoclaved aerated concrete precast slab comprises the following steps:
s1, preparing materials: weighing cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer in parts by weight for later use;
s2, preparing slurry: adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, fully and uniformly stirring, adding cement, quicklime and slaked lime, adding water while stirring, fully stirring, and adding a stabilizer to obtain slurry;
s3, molding:
s31, pouring the prepared slurry into a prepared concrete plate mold, and standing after the liquid level of the slurry is flat;
s32, inserting a reinforcing mesh into the concrete mould filled with the slurry, and standing after the reinforcing mesh is completely immersed in the slurry to obtain a blank;
s4, maintenance: and (3) demolding and cutting the blank after the blank reaches the strength, and finally curing to obtain the autoclaved aerated concrete precast slab.
Further scheme:
in step S2, the slurry preparation specifically includes:
s21, adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, and stirring for 2 hours until all the raw materials are fully mixed to obtain a mixture;
and S22, adding cement, quicklime and hydrated lime into the fully stirred mixture, adding water while stirring, adding a stabilizer after stirring for 1-3h, and continuously stirring for 30min to obtain the slurry.
Further scheme:
in step S22, the weight of water added is 18% of the total weight of cement, quicklime, hydrated lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and stabilizer.
Further scheme:
in step S4, the concrete step of curing includes:
s41, primary curing: heating the blank to 28 ℃, preserving heat for 4 hours, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished;
s42, secondary curing: heating the blank to 48 ℃, preserving heat for 6h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished.
Example 5
An autoclaved aerated concrete precast slab comprises the following raw materials in parts by weight: 45 parts of cement, 25 parts of quicklime, 16 parts of slaked lime, 7 parts of desulfurized gypsum, 8 parts of dry aluminum powder, 6 parts of kaolin, 8 parts of quartz sand and 5 parts of stabilizer.
Further scheme: the stabilizing agents are alkylolamides and amine oxides.
A production method of an autoclaved aerated concrete precast slab comprises the following steps:
s1, preparing materials: weighing cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer in parts by weight for later use;
s2, preparing slurry: adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, fully and uniformly stirring, adding cement, quicklime and slaked lime, adding water while stirring, fully stirring, and adding a stabilizer to obtain slurry;
s3, molding:
s31, pouring the prepared slurry into a prepared concrete plate mold, and standing after the liquid level of the slurry is flat;
s32, inserting a reinforcing mesh into the concrete mould filled with the slurry, and standing after the reinforcing mesh is completely immersed in the slurry to obtain a blank;
s4, maintenance: and (3) demolding and cutting the blank after the blank reaches the strength, and finally curing to obtain the autoclaved aerated concrete precast slab.
Further scheme:
in step S2, the slurry preparation specifically includes:
s21, adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into the stirring kettle, and stirring for 1.5 hours until all the raw materials are fully mixed to obtain a mixture;
and S22, adding cement, quicklime and hydrated lime into the fully stirred mixture, adding water while stirring, adding the stabilizer after stirring for 2 hours, and continuously stirring for 20 minutes to obtain the slurry.
Further scheme:
in step S22, the water is added in an amount of 15% by weight based on the total weight of the cement, the quicklime, the slaked lime, the desulfurized gypsum, the dry aluminum powder, the kaolin, the quartz sand and the stabilizer.
Further scheme:
in step S4, the concrete step of curing includes:
s41, primary curing: heating the blank to 26 ℃, preserving heat for 3 hours, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished;
s42, secondary curing: heating the blank to 45 ℃, preserving heat for 5h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The autoclaved aerated concrete precast slab is characterized by comprising the following raw materials in parts by weight: 30-60 parts of cement, 20-30 parts of quick lime, 10-20 parts of hydrated lime, 5-8 parts of desulfurized gypsum, 6-12 parts of dry aluminum powder, 6-9 parts of kaolin, 4-12 parts of quartz sand and 3-6 parts of stabilizer.
2. The autoclaved aerated concrete precast slab according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 40-50 parts of cement, 22-28 parts of quick lime, 11-19 parts of hydrated lime, 6-8 parts of desulfurized gypsum, 7-10 parts of dry aluminum powder, 5-9 parts of kaolin, 6-10 parts of quartz sand and 4-6 parts of stabilizer.
3. The autoclaved aerated concrete precast slab according to claim 2, which is characterized by comprising the following raw materials in parts by weight: 45 parts of cement, 25 parts of quicklime, 16 parts of slaked lime, 7 parts of desulfurized gypsum, 8 parts of dry aluminum powder, 6 parts of kaolin, 8 parts of quartz sand and 5 parts of stabilizer.
4. The autoclaved aerated concrete precast slab according to any one of claims 1 to 3, wherein the stabilizer is one or more of alkylolamide and amine oxide.
5. The method for producing an autoclaved aerated concrete precast slab as set forth in any one of claims 1 to 3, characterized by comprising the steps of:
s1, preparing materials: weighing cement, quicklime, slaked lime, desulfurized gypsum, dry aluminum powder, kaolin, quartz sand and a stabilizer in parts by weight for later use;
s2, preparing slurry: adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, fully and uniformly stirring, adding cement, quicklime and slaked lime, adding water while stirring, fully stirring, and adding a stabilizer to obtain slurry;
s3, molding:
s31, pouring the prepared slurry into a prepared concrete plate mold, and standing after the liquid level of the slurry is flat;
s32, inserting a reinforcing mesh into the concrete mould filled with the slurry, and standing after the reinforcing mesh is completely immersed in the slurry to obtain a blank;
s4, maintenance: and (3) demolding and cutting the blank after the blank reaches the strength, and finally curing to obtain the autoclaved aerated concrete precast slab.
6. The production method of the autoclaved aerated concrete precast slab according to claim 5, wherein in the step S2, the concrete steps of the slurry preparation are as follows:
s21, adding quartz sand, desulfurized gypsum, dry aluminum powder and kaolin into a stirring kettle, and stirring for 1-2 hours until all the raw materials are fully mixed to obtain a mixture;
and S22, adding cement, quicklime and hydrated lime into the fully stirred mixture, adding water while stirring, adding a stabilizer after stirring for 1-3h, and continuously stirring for 10-30min to obtain the slurry.
7. The method for producing an autoclaved aerated concrete precast slab as claimed in claim 6, wherein in the step S22, the weight of the added water is 10-18% of the total weight of the cement, the quicklime, the hydrated lime, the desulfurized gypsum, the dry aluminum powder, the kaolin, the quartz sand and the stabilizer.
8. The method for producing the autoclaved aerated concrete precast slab as set forth in claim 5, wherein in the step S4, the concrete step of curing comprises:
s41, primary curing: heating the blank to 25-28 ℃, preserving heat for 3-4h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted after the heat preservation is finished;
s42, secondary curing: heating the blank to 43-48 deg.C, maintaining the temperature for 4-6h, covering with tarpaulin, and watering the blank until the surface of the blank is wetted.
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