CN116621514A - Autoclaved aerated concrete block and preparation method thereof - Google Patents
Autoclaved aerated concrete block and preparation method thereof Download PDFInfo
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- CN116621514A CN116621514A CN202310605461.0A CN202310605461A CN116621514A CN 116621514 A CN116621514 A CN 116621514A CN 202310605461 A CN202310605461 A CN 202310605461A CN 116621514 A CN116621514 A CN 116621514A
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- 239000004567 concrete Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000004793 Polystyrene Substances 0.000 claims abstract description 129
- 229920002223 polystyrene Polymers 0.000 claims abstract description 129
- 239000011246 composite particle Substances 0.000 claims abstract description 116
- 239000002002 slurry Substances 0.000 claims abstract description 39
- 238000005187 foaming Methods 0.000 claims abstract description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 14
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 11
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 11
- 239000004571 lime Substances 0.000 claims abstract description 11
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000010881 fly ash Substances 0.000 claims abstract description 10
- 239000004088 foaming agent Substances 0.000 claims abstract description 10
- 239000010440 gypsum Substances 0.000 claims abstract description 10
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 52
- 229910052742 iron Inorganic materials 0.000 claims description 26
- 238000000465 moulding Methods 0.000 claims description 26
- 230000006698 induction Effects 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 238000005204 segregation Methods 0.000 abstract description 7
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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
-
- 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
-
- 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
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The invention relates to an autoclaved aerated concrete block and a preparation method thereof, wherein the concrete block is prepared from the following materials in percentage by mass: 20-40% of water, 30-60% of fly ash, 25-45% of cement, 2-8% of lime, 0.8-2% of gypsum, aluminum powder as a foaming agent, wherein the volume of a blank is used as a standard, 0.4-0.6 kg of aluminum powder is added per cubic meter, 0.8-1.2 kg of light polystyrene composite particles are added per cubic meter, and 1-3 kg of heavy polystyrene composite particles are added per cubic meter; the invention fundamentally solves the phenomenon of floating layering segregation of polystyrene particles in a foaming state, and improves the distribution uniformity of the polystyrene particles in the foaming state in the slurry curing and forming process.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an autoclaved aerated concrete block and a preparation method thereof.
Background
In the prior art, the Chinese patent application number 200910104103.1 discloses a polystyrene aerated concrete wall material, which aims to solve the problems that the polystyrene composite particles in a foaming state are always floated and gathered on the surface of concrete under the buoyancy action in the actual production process due to the addition of the polystyrene composite particles in the foaming state, and the layering segregation phenomenon is serious; the surface of the polystyrene composite particles in a foaming state is modified to increase the wettability of the surfaces of the polystyrene composite particles in a foaming state, so that the floating delamination segregation phenomenon of the polystyrene composite particles in a foaming state is inhibited.
However, this method can only suppress the floating of the polystyrene composite particles in a foamed state, but cannot fundamentally solve the problem of floating and delamination of the polystyrene composite particles.
Disclosure of Invention
The invention aims to overcome the defects and provide an autoclaved aerated concrete block and a preparation method thereof.
In order to achieve the above object, the present invention is specifically as follows:
an autoclaved aerated concrete block, which is prepared from the following formula materials: water, fly ash, cement, lime, gypsum, foaming agent, light polystyrene composite particles and heavy polystyrene composite particles;
wherein, according to mass percent: 20-40% of water, 30-60% of fly ash, 25-45% of cement, 2-8% of lime, 0.8-2% of gypsum, aluminum powder as a foaming agent, wherein the volume of a green body is used as a standard, 0.4-0.6 kg of aluminum powder is added per cubic meter, 0.8-1.2 kg of light polystyrene composite particles are added per cubic meter, and 1-3 kg of heavy polystyrene composite particles are added per cubic meter.
Preferably, the light polystyrene composite particles and the heavy polystyrene composite particles comprise iron sheet bodies, and the outer sides of the iron sheet bodies are coated with polystyrene layers in an unfoamed state;
the volume of the iron sheet body of the light polystyrene composite particle is smaller than that of the iron sheet body of the heavy polystyrene composite particle.
The invention also provides a preparation method of the autoclaved aerated concrete block, which comprises the following steps:
step S100: mixing water, fly ash, cement, lime, gypsum and a foaming agent according to mass percent to form basic slurry;
step S200: weighing light polystyrene composite particles and heavy polystyrene composite particles with corresponding mass, mixing, putting into the basic slurry, and stirring and mixing to form slurry to be foamed;
step S300: injecting the formed slurry to be foamed into a forming die;
step S400: transferring the molding die after grouting into a pre-curing autoclave box, and performing induction heating foaming on aluminum powder, light polystyrene composite particles and iron sheet bodies in heavy polystyrene composite particles in slurry to be foamed to form foamed slurry;
injecting pre-curing steam into the pre-curing autoclave for pre-curing, so that the slurry is primarily molded and solidified into aerated concrete blocks after foaming in the molding die;
step S500: after the precuring is finished, demoulding the preliminarily molded and cured aerated concrete block;
step S600: and completely curing and forming the preliminary molding cured aerated concrete block into an aerated concrete block.
Preferably, first electromagnets are arranged on two sides of the forming die; the second electromagnet is arranged at the inner bottom of the pre-raising autoclaved box;
after the foaming of the light polystyrene composite particles and the heavy polystyrene composite particles is finished, the first electromagnet and the second electromagnet are electrified to generate a magnetic field, and the horizontal position and the vertical position of the foamed light polystyrene composite particles and the foamed heavy polystyrene composite particles are adjusted.
Preferably, an induction coil group which can be pulled out from the forming die is arranged in the forming die, the induction coil group is immersed below the liquid level of the slurry to be foamed, and aluminum powder, light polystyrene composite particles and iron sheet bodies in the heavy polystyrene composite particles in the slurry to be foamed are subjected to induction heating through the induction coil group.
Preferably, the forming die after the preliminary forming and curing is transferred into a die opening device, the induction coil assembly is firstly pulled out of the forming die, and then the aerated concrete block subjected to the preliminary forming and curing is demoulded.
Preferably, the aerated concrete cut blocks after demoulding are transferred into a curing autoclave box, curing steam is injected into curing autoclave for autoclaved curing, and the aerated concrete cut blocks subjected to primary molding and curing are completely cured and formed.
Preferably, the temperature of the curing steam is 190-200 ℃, and the curing time is 8-12h.
Preferably, the temperature of the pre-curing steam is 65-80 ℃, and the pre-curing time is 2.5-4.5 hours.
The beneficial effects of the invention are as follows: according to the invention, the light polystyrene composite particles and the heavy polystyrene composite particles are added, and the volume of the iron sheet body of the light polystyrene composite particles is smaller than that of the iron sheet body of the heavy polystyrene composite particles, so that the horizontal position and the vertical position of the light polystyrene composite particles and the heavy polystyrene composite particles in a foaming state are adjusted through the first electromagnet and the second electromagnet, the phenomenon of floating layering segregation of the polystyrene particles in the foaming state is fundamentally solved, and the distribution uniformity of the polystyrene particles in the foaming state in the slurry curing and forming process is improved.
Drawings
FIG. 1 is a flow chart of a method of making autoclaved aerated concrete blocks of the present invention;
FIG. 2 is a schematic diagram of the preparation structure of the autoclaved aerated concrete block of the present invention;
fig. 3 is a schematic structural diagram of a molding die according to an embodiment of the present invention;
FIG. 4 is an exploded view of a molding die provided by an embodiment of the present invention;
FIG. 5 is a schematic view of unfoamed light polystyrene composite particles or heavy polystyrene composite particles provided in an embodiment of the present invention;
FIG. 6 is a schematic view of a foamed light polystyrene composite particle or heavy polystyrene composite particle provided in an embodiment of the present invention;
reference numerals illustrate: 1. a mixing device; 2. a forming die; 21. a die body; 22. an induction coil group; 23. a first electromagnet; 3. a pre-raising autoclave box; 4. a second electromagnet; 5. a die opening device; 6. maintaining the autoclave; 7. iron sheet.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the invention.
As shown in fig. 1 to 6, the autoclaved aerated concrete block according to the embodiment is made of the following formulation materials: water, fly ash, cement, lime, gypsum, foaming agent, light polystyrene composite particles and heavy polystyrene composite particles; wherein, according to mass percent: 20-40% of water, 30-60% of fly ash, 25-45% of cement, 2-8% of lime, 0.8-2% of gypsum, aluminum powder as a foaming agent, wherein the volume of a green body is used as a standard, 0.4-0.6 kg of aluminum powder is added per cubic meter, 0.8-1.2 kg of light polystyrene composite particles are added per cubic meter, and 1-3 kg of heavy polystyrene composite particles are added per cubic meter.
In this embodiment, as shown in fig. 5 and 6, the light polystyrene composite particles and the heavy polystyrene composite particles each include an iron sheet 7, and the outer side of the iron sheet 7 is coated with a polystyrene layer in an unfoamed state; wherein, the volume of the iron sheet body 7 of the light polystyrene composite particle is smaller than the volume of the iron sheet body 7 of the heavy polystyrene composite particle.
As shown in fig. 1 to 6, the embodiment also provides a preparation method of the autoclaved aerated concrete block, which comprises the following steps:
step S100: adding water, fly ash, cement, lime, gypsum and a foaming agent into a mixing device 1 according to mass percent, stirring and mixing to form a basic slurry with uniformly dispersed components;
step S200: weighing light polystyrene composite particles and heavy polystyrene composite particles with corresponding mass, mixing, then putting into the basic slurry, stirring and mixing to form slurry to be foamed, so that the light polystyrene composite particles and the heavy polystyrene composite particles are uniformly dispersed; the amounts of the light polystyrene composite particles and the heavy polystyrene composite particles are weighed according to the feeding amount and the formula ratio in the step S100;
compared with the prior art that polystyrene particles in a foaming state are directly added into concrete slurry, the polystyrene particles in an unfoamed state have smaller buoyancy in the concrete slurry and have smaller tendency of aggregation and segregation upwards under the action of buoyancy due to larger density;
step S300: injecting the formed slurry to be foamed into a forming die 2; the filling rate of the slurry to be foamed is controlled between 60% and 75%, so as to reserve enough expansion space for the subsequent foaming process;
step S400: as shown in fig. 2, the molding die 2 after grouting in step S300 is transferred into the pre-curing autoclave 3, and the top wall of the molding die 2 abuts against the inner top wall of the pre-curing autoclave 3 and forms a molding space by enclosing; then carrying out induction heating foaming on aluminum powder, light polystyrene composite particles and iron sheet bodies 7 in the heavy polystyrene composite particles in the slurry to be foamed, so as to form foamed slurry;
compared with the existing normal-temperature foaming process, the method has the advantages that the local temperature of the surface of the aluminum powder can be increased by carrying out induction heating on the aluminum powder, so that the reactivity of the surface of the aluminum powder is increased, the plastic which reacts in the alkaline environment in the slurry to generate hydrogen is faster, and the foaming rate is improved; meanwhile, the aluminum powder has higher reactivity, and the PH value of the slurry can be reduced under the condition of ensuring the same reaction rate, so that the lime consumption can be reduced;
meanwhile, as the volume of the iron sheet body 7 in the light polystyrene composite particle is smaller than that of the iron sheet body 7 in the heavy polystyrene composite particle, the heating area of the heavy polystyrene composite particle is larger, so that the foaming rate of the heavy polystyrene composite particle is faster than that of the light polystyrene composite particle; the foamed heavy polystyrene particles gradually move upwards under the buoyancy effect to form foamed slurry of the foamed heavy polystyrene composite particles in the upper and lower foaming states;
in this step, specifically, as shown in fig. 3 and 4, an induction coil group 22 capable of being drawn out from the inside of the forming mold 2 is provided in the forming mold 2, and when grouting, the induction coil group 22 is immersed below the liquid surface of the slurry to be foamed, and a high-frequency alternating current is conducted through the induction coil group 22 to generate a high-frequency magnetic field, so that induction heating is performed on aluminum powder, light polystyrene composite particles and iron sheet bodies 7 in the heavy polystyrene composite particles in the slurry to be foamed, so that the aluminum powder, the light polystyrene composite particles and the heavy polystyrene composite particles are foamed and expanded;
in this step, specifically, before the step of injecting the precured steam into the precured autoclave tank 3, as shown in fig. 3 and 4, first electromagnets 23 are provided on both sides of the molding die 2, respectively; as shown in fig. 2, a second electromagnet 4 is arranged at the inner bottom of the pre-curing autoclave 3; when the forming die 2 is transferred into the pre-curing autoclave 3, the second electromagnet 4 is positioned below the forming die 2, after the foaming of the light polystyrene composite particles and the heavy polystyrene composite particles is completed, the first electromagnet 23 and the second electromagnet 4 are electrified to generate a magnetic field, and the horizontal position and the vertical position of the foamed light polystyrene composite particles and heavy polystyrene composite particles are adjusted; the magnetic field generated by the second electromagnet 4 is electrified, so that downward adsorption force can be generated on the foamed light polystyrene composite particles and the foamed heavy polystyrene composite particles, the self gravity and the buoyancy of the light polystyrene composite particles and the self gravity of the heavy polystyrene composite particles are balanced, the stress of the light polystyrene composite particles and the gravity of the heavy polystyrene composite particles in the vertical direction is balanced, the magnetic field generated by the first electromagnet 23 is electrified, the adsorption force can be generated on the foamed light polystyrene composite particles and the foamed heavy polystyrene composite particles in the horizontal direction, and the horizontal positions of the foamed light polystyrene composite particles and the foamed heavy polystyrene composite particles in the horizontal direction are adjusted;
specifically, as shown in fig. 3 and 4, the forming mold 2 includes a mold body 21 with an opening at one end, an induction coil set 22 is disposed at one end of the mold body 21, and a receiving slot for receiving slurry to be foamed is formed between the induction coil set and the mold body 21, and two first electromagnets 23 are fixedly disposed on two sidewalls of the mold body 21.
In this step, since the foaming order of the light polystyrene composite particles and the heavy polystyrene composite particles is different in the foaming process, the heavy polystyrene composite particles are arranged at the upper side, and the light polystyrene composite particles are arranged at the lower side, and since the volumes of the iron sheets 7 in the light polystyrene composite particles and the heavy polystyrene composite particles are different, the magnetic field adsorption force of the light polystyrene composite particles on the same plane is smaller than that of the heavy polystyrene composite particles, and the magnetic field intensity of the area close to the bottom of the forming die 2 is larger than that of the area far away from the bottom of the forming die 2, so that the magnetic field adsorption force of the heavy polystyrene composite particles at the upper side and the light polystyrene composite particles at the lower side are the same, and the magnetic field adsorption force is equal to the resultant force of gravity and buoyancy of the polystyrene composite particles, and the buoyancy of the light polystyrene composite particles and the heavy polystyrene composite particles in the foaming state are balanced by adding the magnetic field force, thereby fundamentally solving the segregation phenomenon on the polystyrene composite particles in the foaming state, and improving the uniformity of slurry distribution and solidification in the foaming process of the polystyrene composite particles.
After the foamed slurry is formed, the first electromagnet 23 and the second electromagnet 4 keep corresponding parameter states, and then the pre-curing steam is injected into the pre-curing autoclave 3 for pre-curing, so that the foamed slurry in the forming die 2 is primarily formed and solidified into aerated concrete blocks; specifically, the temperature of the pre-raising steam is 65-80 ℃, and the pre-raising time is 2.5-4.5 hours;
step S500: after the precuring is finished, demoulding the preliminarily molded and cured aerated concrete block; specifically, transferring the molding die 2 subjected to preliminary molding and curing into a die opening device 5, firstly, extracting the induction coil group 22 from the molding die 2, and then demolding the preliminary molding and curing aerated concrete cut blocks;
step S600: completely curing and forming the preliminarily formed and solidified aerated concrete block into an aerated concrete block; specifically, the aerated concrete cut blocks after demoulding are transferred into a curing autoclave box 6, and curing steam is injected into curing autoclave inwards for autoclaved curing, so that the aerated concrete cut blocks subjected to preliminary molding and curing are completely cured and formed; specifically, the temperature of the curing steam is 190-200 ℃, and the curing time is 8-12h.
And after the autoclaved curing is finished, taking out the cured aerated concrete and cutting into blocks to obtain a finished product.
According to the embodiment, the light polystyrene composite particles and the heavy polystyrene composite particles are added, the volume of the iron sheet 7 of the light polystyrene composite particles is smaller than that of the iron sheet 7 of the heavy polystyrene composite particles, so that the horizontal position and the vertical position of the light polystyrene composite particles and the heavy polystyrene composite particles in a foaming state are adjusted through the first electromagnet 23 and the second electromagnet 4, the phenomenon of floating layering segregation of the polystyrene particles in the foaming state is fundamentally solved, and the distribution uniformity of the polystyrene particles in the foaming state in the slurry curing and forming process is improved.
The foregoing description is only one preferred embodiment of the invention, and therefore all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are intended to be embraced therein.
Claims (9)
1. An autoclaved aerated concrete block is characterized in that the concrete block is made of the following formula materials: water, fly ash, cement, lime, gypsum, foaming agent, light polystyrene composite particles and heavy polystyrene composite particles;
wherein, according to mass percent: 20-40% of water, 30-60% of fly ash, 25-45% of cement, 2-8% of lime, 0.8-2% of gypsum, aluminum powder as a foaming agent, wherein the volume of a green body is used as a standard, 0.4-0.6 kg of aluminum powder is added per cubic meter, 0.8-1.2 kg of light polystyrene composite particles are added per cubic meter, and 1-3 kg of heavy polystyrene composite particles are added per cubic meter.
2. The autoclaved aerated concrete block of claim 1, wherein the light polystyrene composite particles and the heavy polystyrene composite particles each comprise an iron sheet body, and the outer side of the iron sheet body is coated with a polystyrene layer in an unfoamed state;
the volume of the iron sheet body of the light polystyrene composite particle is smaller than that of the iron sheet body of the heavy polystyrene composite particle.
3. A method of making an autoclaved aerated concrete block as recited in claim 2 comprising the steps of:
s100: mixing water, fly ash, cement, lime, gypsum and a foaming agent according to mass percent to form basic slurry;
s200: weighing light polystyrene composite particles and heavy polystyrene composite particles with corresponding mass, mixing, putting into the basic slurry, and stirring and mixing to form slurry to be foamed;
s300: injecting the formed slurry to be foamed into a forming die;
s400: transferring the molding die after grouting into a pre-curing autoclave box, and performing induction heating foaming on aluminum powder, light polystyrene composite particles and iron sheet bodies in heavy polystyrene composite particles in slurry to be foamed to form foamed slurry;
injecting pre-curing steam into the pre-curing autoclave for pre-curing, so that the slurry is primarily molded and solidified into aerated concrete blocks after foaming in the molding die;
s500: after the precuring is finished, demoulding the preliminarily molded and cured aerated concrete block;
s600: and completely curing and forming the preliminary molding cured aerated concrete block into an aerated concrete block.
4. A method of manufacturing according to claim 3, wherein the molding die is provided with first electromagnets on both sides thereof; the second electromagnet is arranged at the inner bottom of the pre-raising autoclaved box;
after the foaming of the light polystyrene composite particles and the heavy polystyrene composite particles is finished, the first electromagnet and the second electromagnet are electrified to generate a magnetic field, and the horizontal position and the vertical position of the foamed light polystyrene composite particles and the foamed heavy polystyrene composite particles are adjusted.
5. The method according to claim 3, wherein an induction coil group which can be withdrawn from the molding die is provided in the molding die, the induction coil group is submerged below the liquid surface of the slurry to be foamed, and induction heating is performed on aluminum powder, light polystyrene composite particles and iron flakes in the heavy polystyrene composite particles in the slurry to be foamed by the induction coil group.
6. The method according to claim 5, wherein the molding die after the preliminary molding and curing is transferred to a die opening device, the induction coil assembly is first pulled out of the molding die, and then the preliminary molding and curing aerated concrete block is demolded.
7. A method of producing according to claim 3, wherein the aerated concrete cut pieces after demoulding are transferred into a curing autoclave box, curing steam is injected into the curing autoclave to carry out the autoclave curing, so that the aerated concrete cut pieces cured by the preliminary molding are completely cured and formed.
8. The method according to claim 7, wherein the curing steam has a temperature of 190-200 ℃ and a curing time of 8-12 hours.
9. The method according to claim 3, wherein the temperature of the pre-raising steam is 65-80 ℃ and the pre-raising time is 2.5-4.5h.
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| CN202310605461.0A CN116621514B (en) | 2023-05-26 | 2023-05-26 | Autoclaved aerated concrete block and preparation method thereof |
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| CN202310605461.0A CN116621514B (en) | 2023-05-26 | 2023-05-26 | Autoclaved aerated concrete block and preparation method thereof |
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| CN116621514B CN116621514B (en) | 2024-04-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312729A (en) * | 1969-12-08 | 1973-04-04 | He Ler W C | Method of producing and controlling heat-foaming by inductionheating |
| CN101580365A (en) * | 2009-06-17 | 2009-11-18 | 重庆交通大学 | Wall material of polystyrene aeroconcrete |
| CN106116405A (en) * | 2016-06-20 | 2016-11-16 | 安徽中龙建材科技有限公司 | Corrosion-resistant fiberglass steam-pressing aero-concrete and preparation method thereof |
| CN109534769A (en) * | 2018-12-14 | 2019-03-29 | 沈阳建筑大学 | A kind of application method of magnetorheological intelligent shield grouting material |
| CN112209674A (en) * | 2019-07-11 | 2021-01-12 | 佛山市东鹏陶瓷有限公司 | Preparation method and device of concrete plate with adjustable light aggregate position |
-
2023
- 2023-05-26 CN CN202310605461.0A patent/CN116621514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312729A (en) * | 1969-12-08 | 1973-04-04 | He Ler W C | Method of producing and controlling heat-foaming by inductionheating |
| CN101580365A (en) * | 2009-06-17 | 2009-11-18 | 重庆交通大学 | Wall material of polystyrene aeroconcrete |
| CN106116405A (en) * | 2016-06-20 | 2016-11-16 | 安徽中龙建材科技有限公司 | Corrosion-resistant fiberglass steam-pressing aero-concrete and preparation method thereof |
| CN109534769A (en) * | 2018-12-14 | 2019-03-29 | 沈阳建筑大学 | A kind of application method of magnetorheological intelligent shield grouting material |
| CN112209674A (en) * | 2019-07-11 | 2021-01-12 | 佛山市东鹏陶瓷有限公司 | Preparation method and device of concrete plate with adjustable light aggregate position |
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