CN112695949A - Autoclaved aerated concrete radiation-proof plate and production process thereof - Google Patents
Autoclaved aerated concrete radiation-proof plate and production process thereof Download PDFInfo
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- CN112695949A CN112695949A CN202011499168.3A CN202011499168A CN112695949A CN 112695949 A CN112695949 A CN 112695949A CN 202011499168 A CN202011499168 A CN 202011499168A CN 112695949 A CN112695949 A CN 112695949A
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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
- E04C2/06—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
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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
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
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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
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0018—Separating articles from each other
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6125—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
-
- 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
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
- E04C5/0613—Closed cages made of one single bent reinforcement mat
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding materials
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
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Abstract
The invention discloses an autoclaved aerated concrete radiation-proof plate and a production process thereof, and relates to the technical field of autoclaved aerated concrete plates. The anti-radiation barite cement with anti-radiation property is used as a raw material, a porous structure is generated through an autoclaved aerated process, the anti-radiation function is enhanced, and the connecting holding power is enhanced through the arrangement of the middle groove, the side grooves and the connecting grooves of the concrete slab; the side surface structure is simple, the process implementation is convenient, the waste is reduced, the energy is saved, the environment is protected, and the problem that a novel autoclaved aerated concrete radiation-proof plate with the radiation-proof function, which meets social requirements, is urgently needed in the field of autoclaved aerated concrete plates is solved.
Description
Technical Field
The invention relates to the technical field of autoclaved aerated concrete slabs, in particular to an autoclaved aerated concrete radiation-proof plate and a production process thereof.
Background
The autoclaved aerated concrete radiation-proof plate is a concrete plate produced by processing through an autoclaved aerated process, and is mainly prepared by adding different quantities of auxiliary raw materials into main raw materials such as cement, lime, silica sand and the like according to the use requirement, wherein a steel bar net piece subjected to anticorrosion treatment is added according to the structural strength requirement, and the autoclaved aerated concrete radiation-proof plate is a novel building material with a porous structure. The autoclaved aerated concrete slab with porous crystals is produced through high-temperature and high-pressure treatment and steam curing during production, so that the autoclaved aerated concrete slab has good sound insulation, vibration reduction, heat preservation and heat insulation effects, has a density smaller than that of common concrete, has the characteristics of light weight and convenience in construction, and has good unique performances such as fire resistance, fire prevention, sound insulation, heat insulation and heat preservation.
Along with the diversification degree of building types, the building height is increased, the requirement on structural strength is increased, the development of building materials is urgent, the autoclaved aerated concrete slab produced by the prior art cannot completely meet the rapid development of the building industry, and in order to meet the rapid development of the market, a novel autoclaved aerated concrete radiation-proof plate with a simple structure and a radiation-proof function and a production process are provided to meet the social requirements.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an autoclaved aerated concrete radiation-proof plate and a production process thereof, and solves the problem that a novel autoclaved aerated concrete radiation-proof plate with a radiation-proof function, which meets social requirements, is urgently needed in the field of autoclaved aerated concrete plates.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an evaporate and press aerated concrete radiation protection board and production technology, includes concrete slabs and the inside pre-buried reinforcing bar rack of concrete slabs, upper surface, lower surface and two terminal surfaces of concrete slabs are the plane, the middle part of concrete slabs one side is provided with the mesolamella that is parallel with the reinforcing bar rack, the opposite side of concrete slabs is close to the position department of upper surface and lower surface and is provided with the limit groove parallel with the reinforcing bar rack, and the both sides of concrete slabs and the position department of upper surface and lower surface juncture are provided with the spread groove along reinforcing bar rack direction equidistance.
The reinforcing bar net rack comprises main reinforcing bars along the directions of two end faces of the concrete slab and a reinforcing bar frame which is perpendicular to the main reinforcing bars and is fixedly connected with the main reinforcing bars.
The raw material formula of the concrete slab mainly comprises the following components in parts by weight:
29-45 parts of cement, 39-60 parts of building sand, 14-20 parts of lime, 3-5 parts of gypsum and 4-6 parts of foaming agent.
The production process of the autoclaved aerated concrete radiation-proof plate is characterized by comprising the following steps of:
s1, mixing the primary raw materials: the raw materials of each part of the concrete plate are added into a closed container one by one according to the proportion at normal temperature and mixed to form uniformly mixed mixture powder.
S2, preparing slurry: adding the mixture powder into a stirring device, simultaneously adding tap water, and mixing and stirring at 18-25 ℃ to obtain mixed slurry.
S3, presetting steel bars: and welding reinforcing steel bars according to the structure of the reinforcing steel bar net rack, and hoisting the formed reinforcing steel bar net rack in the die.
S4, solidification and forming: and (3) coating building lubricating oil on the inner wall of the mould, filtering the caking and the particles of the mixed slurry through a screen, injecting the mixed slurry into the mould with a preset steel bar net rack, vibrating and tamping, and standing to form a concrete block.
S5, preheating: demoulding the concrete block and transferring the concrete block to a steam-curing ferry vehicle, and conveying the concrete block to a steam-curing kettle by the steam-curing ferry vehicle for preheating treatment at the temperature of 20-28 ℃ for 30-60 minutes.
S6, steam-pressure air-entrapping: heating and pressurizing, sequentially carrying out one-stage steam curing, two-stage steam curing and three-stage steam curing for 120-180 minutes at the steam curing temperatures of 29-48 ℃, 49-68 ℃ and 69-88 ℃, respectively carrying out heat preservation and reinforcement treatment after the one-stage steam curing, the two-stage steam curing and the three-stage steam curing for 20-30 minutes, 25-40 minutes and 50-60 minutes, respectively, and carrying out heat preservation at the heat preservation temperatures of 38-45 ℃, 60-65 ℃ and 75-80 ℃.
S7, constant-temperature breeding: and (3) transporting the concrete blocks to a raising room for raising at a constant temperature of 25-35 ℃ for at least 15 minutes by using the steam-raising ferry vehicle.
S8, cutting concrete blocks: the steam-cured ferry vehicle carries the concrete block to be conveyed to a slitting station along a return track, a slitting machine cuts along the directions of an X axis, a Y axis and a Z axis, and the concrete block is divided into flat plates and is just provided with the appearance of the concrete plate.
S9, breaking into groups: and (3) conveying the original concrete plates to a breaking-off station, breaking off the original concrete plates by the breaking-off machine, grouping the broken-off original concrete plates in a row along the direction vertical to the reinforced bar net rack, and respectively clamping the grouped original concrete plates on the steam-curing ferry push cart.
S10, peeling and milling: and after grouping, carrying the original concrete plates to a die cutting station by the steam curing ferry vehicle in sequence, peeling and milling grooves, and cleaning leftover materials on the surface layer to form the concrete plates.
S11, post-processing: and (5) air-drying the surface of the concrete slab, combining and packaging to form a final product.
Preferably, the reinforcing steel bar net rack adopts ribbed reinforcing steel bars with spiral, herringbone, crescent or combination arranged on the surface.
Preferably, the connecting grooves on two sides of the concrete slab correspond in position, and the connecting grooves are rectangular grooves or irregular grooves.
Preferably, the thickness of the middle groove is one third of the thickness of the concrete slab, and the thickness of the side groove is not more than one third of the thickness of the concrete slab.
Preferably, the reinforcing steel frame comprises an external frame and an internal frame, and the main reinforcing steel is connected at the inner corner position of the external frame and at the outer corner position of the internal frame.
Preferably, two adjacent original steel bar welding sections of the steel bar frames respectively correspond to the side face of the concrete slab or correspond to the upper surface and the lower surface vertical to the side face of the concrete slab, and the external frame and the internal frame are arranged at intervals.
Preferably, the building sand has a fineness modulus of 2.3-3.0, is artificial sand, natural river sand or a combination thereof, is one or a combination of 52.5 or more in reference number, and is radiation-proof barite cement.
(III) advantageous effects
The invention provides an autoclaved aerated concrete radiation-proof plate and a production process thereof, and the autoclaved aerated concrete radiation-proof plate has the following beneficial effects:
according to the invention, the anti-radiation barite cement with anti-radiation property is used as a raw material, a porous structure is generated through an autoclaved aerated process, the anti-radiation function is enhanced, the information era society covered by the internet at present is adapted, and external radiation is shielded, so that the purpose of protecting the human health is achieved; the middle grooves, the side grooves and the connecting grooves of the concrete slabs are arranged, the middle grooves and the side grooves of two adjacent concrete slabs are correspondingly connected, the gaps are bonded by cement, and the connecting grooves are filled with cement, so that the connecting holding power is enhanced; the side face structure is simple, the process is convenient to implement, and people know that the autoclaved aerated concrete slabs in the prior art are supported by large blocks through cutting, die cutting and milling grooves, so that compared with the autoclaved aerated concrete slabs provided by CN 208068540U in the prior art, the autoclaved aerated concrete slabs can greatly reduce the generation of leftover materials, greatly reduce the amount of cement used during connection, and achieve the effects of reducing waste, saving energy and protecting environment; the problem of evaporate and press aerated concrete radiation protection board that novel adaptation society demand has the radiation protection function is urgently needed in evaporating aerated concrete board field is solved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 100. concrete slabs; 101. a middle groove; 102. a side groove; 103. connecting grooves; 200. a steel bar net rack; 201. a main reinforcing bar; 202. a steel bar frame; 202a, an external frame; 202b, built-in frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
As shown in fig. 1, the present invention provides a technical solution: the utility model provides an evaporate and press aerated concrete radiation protection board and production technology, including concrete slabs 100 and the inside pre-buried reinforcing bar rack 200 of concrete slabs 100, the upper surface of concrete slabs 100, lower surface and two terminal surfaces are the plane, the middle part of concrete slabs 100 one side is provided with the well groove 101 parallel with reinforcing bar rack 200, the opposite side of concrete slabs 100 is close to the position department of upper surface and lower surface and is provided with the limit groove 102 parallel with reinforcing bar rack 200, and the both sides of concrete slabs 100 and the position department that upper surface and lower surface are bordered are provided with the spread groove 103 along reinforcing bar rack 200 direction equidistance.
The reinforcing bar net frame 200 includes main reinforcing bars 201 along the direction of both end surfaces of the concrete slab 100 and reinforcing bar frames 202 perpendicular to and fixedly coupled to the main reinforcing bars 201.
The raw material formula of the concrete slab 100 mainly comprises the following components in parts by weight:
29-45 parts of cement, 39-60 parts of building sand, 14-20 parts of lime, 3-5 parts of gypsum and 4-6 parts of foaming agent.
The production process of the autoclaved aerated concrete radiation-proof plate is characterized by comprising the following steps of:
s1, mixing the primary raw materials: the raw materials of each part of the concrete plate 100 are added into a closed container one by one according to the proportion at normal temperature and mixed to form uniformly mixed mixture powder.
S2, preparing slurry: adding the mixture powder into a stirring device, simultaneously adding tap water, and mixing and stirring at 18-25 ℃ to obtain mixed slurry.
S3, presetting steel bars: and welding reinforcing steel bars according to the structure of the reinforcing steel bar net rack 200, and hoisting the formed reinforcing steel bar net rack 200 in a mould.
S4, solidification and forming: and (3) coating building lubricating oil on the inner wall of the mould, filtering the caking and the particles of the mixed slurry through a screen, injecting the mixed slurry into the mould with the preset reinforcing steel bar net rack 200, vibrating and tamping, and standing to form a concrete block.
S5, preheating: demoulding the concrete block and transferring the concrete block to a steam-curing ferry vehicle, and conveying the concrete block to a steam-curing kettle by the steam-curing ferry vehicle for preheating treatment at the temperature of 20-28 ℃ for 30-60 minutes.
S6, steam-pressure air-entrapping: heating and pressurizing, sequentially carrying out one-stage steam curing, two-stage steam curing and three-stage steam curing for 120-180 minutes at the steam curing temperatures of 29-48 ℃, 49-68 ℃ and 69-88 ℃, respectively carrying out heat preservation and reinforcement treatment after the one-stage steam curing, the two-stage steam curing and the three-stage steam curing for 20-30 minutes, 25-40 minutes and 50-60 minutes, respectively, and carrying out heat preservation at the heat preservation temperatures of 38-45 ℃, 60-65 ℃ and 75-80 ℃.
S7, constant-temperature breeding: and (3) transporting the concrete blocks to a raising room for raising at a constant temperature of 25-35 ℃ for at least 15 minutes by using the steam-raising ferry vehicle.
S8, cutting concrete blocks: the steam-cured ferry vehicle carries the concrete block to be conveyed to a slitting station along a return track, a slitting machine cuts along the directions of an X axis, a Y axis and a Z axis, and the concrete block is divided into flat plates and is just provided with the appearance of a concrete plate 100.
S9, breaking into groups: the original concrete slabs 100 are conveyed to the breaking-off station, the breaking-off machine breaks off the concrete slabs, the broken-off original concrete slabs 100 are grouped in rows along the direction perpendicular to the reinforced net rack 200 and are respectively clamped on the grouped steam curing ferry vehicles.
S10, peeling and milling: and after grouping, carrying the original concrete slabs 100 to a die cutting station by the steam-curing ferry vehicle in sequence, peeling and milling grooves, and cleaning leftover materials on the surface layer to form the concrete slabs 100.
S11, post-processing: and (5) air-drying the surface of the concrete slab 100, combining and packaging to form a final product.
As a technical optimization scheme of the invention, the reinforcing steel bar net rack 200 adopts ribbed reinforcing steel bars with spiral, herringbone, crescent or combination arranged on the surface.
As a technical optimization scheme of the invention, the connecting grooves 103 on two sides of the concrete slab 100 correspond in position, and the connecting grooves 103 are rectangular grooves or irregular grooves.
As a technical optimization scheme of the invention, the thickness of the middle groove 101 is one third of the thickness of the concrete slab 100, and the thickness of the side groove 102 is not more than one third of the thickness of the concrete slab 100.
As a technical optimization scheme of the present invention, the reinforcement frame 202 includes an external frame 202a and an internal frame 202b, and the main reinforcement 201 is connected at an inner corner position of the external frame 202a and at an outer corner position of the internal frame 202 b.
As a technical optimization scheme of the present invention, the original reinforcement welding sections of two adjacent reinforcement frames 202 respectively correspond to the side surface of the concrete slab 100 or correspond to the upper surface and the lower surface perpendicular to the side surface of the concrete slab 100, and the external frame 202a and the internal frame 202b are disposed at an interval.
As a technical optimization scheme of the invention, the fineness modulus of the building sand is 2.3-3.0, the building sand is artificial sand, natural river sand or a combination, the grade of the cement is one or a combination of 52.5 and above, and the cement is radiation-proof barite cement.
In conclusion, the anti-radiation barite cement with anti-radiation property is used as a raw material, a porous structure is generated through an autoclaved aerated technology, the anti-radiation function is enhanced, and the connecting holding power is enhanced through the arrangement of the middle groove 101, the side groove 102 and the connecting groove 103 of the concrete plate 100; the side surface structure is simple, the process implementation is convenient, the waste is reduced, the energy is saved, the environment is protected, and the problem that a novel autoclaved aerated concrete radiation-proof plate with the radiation-proof function, which meets social requirements, is urgently needed in the field of autoclaved aerated concrete plates is solved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an evaporate and press aerated concrete radiation protection board, includes concrete slabs (100) and concrete slabs (100) inside pre-buried reinforcing bar net rack (200), its characterized in that: the upper surface, the lower surface and the two end surfaces of the concrete plate (100) are planes, a middle groove (101) parallel to the reinforced bar net rack (200) is arranged in the middle of one side of the concrete plate (100), side grooves (102) parallel to the reinforced bar net rack (200) are arranged at positions, close to the upper surface and the lower surface, of the other side of the concrete plate (100), and connecting grooves (103) are equidistantly arranged at positions, along the direction of the reinforced bar net rack (200), where the two sides of the concrete plate (100) are intersected with the upper surface and the lower surface;
the reinforced concrete net rack (200) comprises main reinforced bars (201) along the directions of two end faces of the concrete slab (100) and reinforced bar frames (202) which are vertical to the main reinforced bars (201) and fixedly connected with the main reinforced bars;
the raw material formula of the concrete slab (100) mainly comprises the following components in parts by weight:
29-45 parts of cement, 39-60 parts of building sand, 14-20 parts of lime, 3-5 parts of gypsum and 4-6 parts of foaming agent;
the production process of the autoclaved aerated concrete radiation-proof plate is characterized by comprising the following steps of:
s1, mixing the primary raw materials: adding raw materials of each part of the concrete slab (100) into a closed container one by one according to a proportion at normal temperature, and mixing to form uniformly mixed mixture powder;
s2, preparing slurry: adding the mixture powder into a stirring device, adding tap water, and mixing and stirring at 18-25 ℃ to obtain mixed slurry;
s3, presetting steel bars: welding reinforcing steel bars according to the structure of the reinforcing steel bar net rack (200), and hoisting the formed reinforcing steel bar net rack (200) in a mould;
s4, solidification and forming: coating building lubricating oil on the inner wall of the mould, filtering the mixed slurry by a screen mesh to form lumps and particles, injecting the filtered mixed slurry into the mould with a preset reinforcing steel bar net rack (200), vibrating and tamping the slurry, and standing the slurry to form concrete blocks;
s5, preheating: demoulding the concrete block and transferring the concrete block to a steam-curing ferry vehicle, and conveying the concrete block to a steam-curing kettle by the steam-curing ferry vehicle for preheating treatment at the preheating temperature of 20-28 ℃ for 30-60 minutes;
s6, steam-pressure air-entrapping: heating and pressurizing, sequentially carrying out one-stage steam curing, two-stage steam curing and three-stage steam curing for 120-180 minutes at the steam curing temperatures of 29-48 ℃, 49-68 ℃ and 69-88 ℃, respectively carrying out heat preservation and reinforcement treatment after the one-stage steam curing, the two-stage steam curing and the three-stage steam curing for 20-30 minutes, 25-40 minutes and 50-60 minutes, respectively, and carrying out heat preservation at the heat preservation temperatures of 38-45 ℃, 60-65 ℃ and 75-80 ℃;
s7, constant-temperature breeding: transporting the concrete blocks to a raising room for raising at a constant temperature of 25-35 ℃ for at least 15 minutes by a steam-raising ferry vehicle;
s8, cutting concrete blocks: the steam-cured ferry vehicle carries concrete blocks to a slitting station along a return track, a slitting machine cuts the concrete blocks along the directions of an X axis, a Y axis and a Z axis, and the concrete blocks are divided into flat plates and are just provided with the appearance of a concrete plate (100);
s9, breaking into groups: the original concrete slabs (100) are conveyed to a breaking-off station, breaking-off is carried out by the breaking-off machine, the broken-off original concrete slabs (100) are grouped in a row along the direction vertical to the reinforced net rack (200) and are respectively clamped on grouped steam curing ferry vehicles;
s10, peeling and milling: after grouping, the steam-curing ferry vehicle sequentially carries the original concrete slabs (100) to a die-cutting station, peels and mills grooves, and cleans leftover materials on the surface layer to form the concrete slabs (100);
s11, post-processing: and (5) air-drying the surface of the concrete plate (100), combining and packaging to form a final product.
2. The autoclaved aerated concrete radiation-proof plate and the production process thereof according to claim 1 are characterized in that: the reinforcing steel bar net rack (200) adopts ribbed reinforcing steel bars with spiral, herringbone, crescent or combination arranged on the surface.
3. The autoclaved aerated concrete radiation-proof plate and the production process thereof according to claim 1 are characterized in that: the connecting grooves (103) on two sides of the concrete slab (100) correspond in position, and the connecting grooves (103) are rectangular grooves or irregular grooves.
4. The autoclaved aerated concrete radiation-proof plate and the production process thereof according to claim 1 are characterized in that: the thickness of the middle groove (101) is one third of the thickness of the concrete slab (100), and the thickness of the side groove (102) is not more than one third of the thickness of the concrete slab (100).
5. The autoclaved aerated concrete radiation-proof plate and the production process thereof according to claim 1 are characterized in that: the steel bar frame (202) comprises an external frame (202a) and an internal frame (202b), and the main steel bar (201) is connected at the inner corner position of the external frame (202a) and at the outer corner position of the internal frame (202 b).
6. The autoclaved aerated concrete radiation-proof plate and the production process thereof according to claim 5 are characterized in that: the original steel bar welding sections of two adjacent steel bar frames (202) respectively correspond to the side surface of the concrete slab (100) or correspond to the upper surface and the lower surface vertical to the side surface of the concrete slab (100), and the external frame (202a) and the internal frame (202b) are arranged at intervals.
7. The autoclaved aerated concrete radiation-proof plate and the production process thereof according to claim 1 are characterized in that: the building sand has fineness modulus of 2.3-3.0, is artificial sand, natural river sand or a combination thereof, is one or a combination of cement with a grade of 52.5 and above, and is radiation-proof barite cement.
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Application publication date: 20210423 |