CN110713372B - Autoclaved aerated concrete block for integrated wall surface system and preparation method thereof - Google Patents
Autoclaved aerated concrete block for integrated wall surface system and preparation method thereof Download PDFInfo
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- CN110713372B CN110713372B CN201911245676.6A CN201911245676A CN110713372B CN 110713372 B CN110713372 B CN 110713372B CN 201911245676 A CN201911245676 A CN 201911245676A CN 110713372 B CN110713372 B CN 110713372B
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
Abstract
The autoclaved aerated concrete block for the integrated wall surface system comprises the following raw materials in parts by mass: 45-60 parts of fly ash, 10-25 parts of portland cement, 10-20 parts of quartz weathered sand, 10-15 parts of basalt powder, 10-15 parts of lime powder, 5-10 parts of yellow sand, 5-9 parts of gypsum, 3-5 parts of sodium lignosulfonate, 2-3 parts of sodium sulfate and 0.7-1.3 parts of aluminum powder paste; the building block is internally provided with the reinforcing ribs, and the building block with the internal composite material tightly combined with the building block and without the problems of performance reduction, abnormal sound and the like is obtained by selecting the composition of the material and the form of the material under the condition of ensuring various excellent performances.
Description
Technical Field
The invention belongs to the technical field of concrete products, and particularly relates to an autoclaved aerated concrete block for an integrated wall surface system and a preparation method thereof.
Background
The autoclaved aerated concrete block is a porous concrete product prepared by using fly ash, lime powder, cement, gypsum, slag and the like as main raw materials, adding a proper amount of a gas former, a regulator and a bubble stabilizer, and carrying out the processes of batching, stirring, pouring, standing, cutting, high-pressure steam curing and the like. The autoclaved aerated concrete block has unit volume weight one third of that of clay brick, heat insulating performance 3-4 times that of clay brick, sound insulating performance 2 times that of clay brick, anti-permeability over one time that of clay brick, and fireproof performance 6-8 times that of reinforced concrete. The autoclaved aerated concrete block has excellent construction characteristics, can produce various specifications in a factory, can be sawed, planed, drilled and nailed like wood, has higher construction speed due to larger volume, and can be used as a filling material of a common building.
The integrated wall system is a modern building mode with good heat insulation, sound insulation and earthquake resistance, and the autoclaved aerated concrete blocks are good raw materials for building the integrated wall system due to the characteristics of the autoclaved aerated concrete blocks.
In order to pursue higher structural strength and better heat and sound insulation effects, other materials, such as a rubber layer, a high-strength fiber rope and the like, are added into the existing autoclaved aerated concrete block to form a composite structure, and the problem can be brought in practice: the added reinforcing material has a large difference with the building block material, so different thermal expansion coefficients and repeated thermal expansion and cold contraction between different materials exist, meanwhile, the contact section of the building block with other materials is easy to pulverize, the adhesiveness is not strong, in addition, the materials are aged and the like, the contact surface between the materials can not be tightly combined under various factors for a long time, even gaps can appear, and therefore, the building block resonance abnormal sound can be brought, especially, the wind pressure change between high-rise buildings is large, the outer wall is easy to vibrate under the condition of blowing strong wind, and the abnormal sound phenomenon is particularly obvious.
Disclosure of Invention
Aiming at the problems, the invention provides the autoclaved aerated concrete block for the integrated wall surface system and the preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an integrated wall system is with evaporating and pressing aerated concrete block, the structure is: a plurality of reinforcing ribs are arranged in the building block body, and polyurethane foam is arranged in each reinforcing rib;
the building block body comprises the following raw materials in parts by mass: 45-60 parts of fly ash, 10-25 parts of portland cement, 10-20 parts of quartz weathered sand, 10-15 parts of basalt powder, 10-15 parts of lime powder, 5-10 parts of yellow sand, 5-9 parts of gypsum, 3-5 parts of sodium lignosulfonate, 2-3 parts of sodium sulfate and 0.7-1.3 parts of aluminum powder paste;
the reinforcing rib raw materials comprise by mass: 40-50 parts of fly ash, 15-23 parts of portland cement, 10-15 parts of lime powder, 8-10 parts of silicon dioxide powder, 8-10 parts of graphite fiber, 5-8 parts of yellow sand, 4-8 parts of gypsum, 3-7 parts of sodium lignosulfonate, 2.5-3.5 parts of sodium sulfate and 0.5-1.5 parts of aluminum powder paste;
the preparation method of the reinforcing rib comprises the following steps:
(1) mixing the fly ash, the silicon dioxide powder, the yellow sand and the gypsum in parts by mass with water to prepare slurry, wherein the mass of the water is 0.5-0.7 times of the total mass of the fly ash, the silicon dioxide powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a pouring stirrer for stirring, and adding the lime powder and the graphite fiber in the mass part ratio during stirring for 10-20 min; then uniformly stirring and mixing the Portland cement, the sodium lignosulfonate and the sodium sulfate in parts by mass, and then conveying the mixture into a static curing chamber for static curing for 100-180min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water with the mass 7-12 times of that of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry prepared in the step 2, stirring for 2-6min, and pouring into a mold provided with a vertically-arranged iron chisel;
(4) placing the die into a pre-curing chamber at 50-60 ℃ for curing for 4-8h to form a stable blank, demolding, extracting the iron drill rod, and cutting according to the required specification to obtain a blank before the reinforcing rib kettle;
(5) conveying the blank in front of the reinforcing rib kettle into a still kettle, increasing the pressure to 2-3MPa within 20-60min, increasing the temperature to 140-160 ℃, then reducing the pressure to normal pressure within 10-20min, then conveying out of the building block for natural cooling, and after cooling, preparing a semi-finished product of the reinforcing rib;
(6) and (5) injecting polyurethane foam into the cavity of the semi-finished product of the reinforcing rib prepared in the step (5) to prepare a finished product of the reinforcing rib.
The preparation method of the whole comprises the following steps:
(1) mixing the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum with water according to the mass part ratio to prepare slurry, wherein the mass of the water is 0.6-0.8 time of the total mass of the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a stirrer for stirring, and adding the lime powder in the mass part ratio during stirring for 8-13 min; then adding the Portland cement, the sodium lignosulfonate and the sodium sulfate in the mass portion ratio, stirring for 5-8min, and then conveying into a static curing room for static curing for 70-110min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water with the mass 6-10 times that of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry in the step 2, stirring for 3-6min, and pouring into a mold provided with a plurality of reinforcing ribs;
(4) placing the die into a pre-curing chamber at 50-65 ℃ for curing for 5-7h to form a stable blank, demolding, and cutting according to the required specification to obtain a blank before the kettle;
(5) conveying the blank in front of the autoclave into an autoclave, increasing the pressure to 1.5-2.5MPa within 10-20min, increasing the temperature to 160-180 ℃, maintaining for 3-5h, then reducing the pressure to normal pressure within 5-10min, then conveying out the block, naturally cooling, and warehousing after cooling to obtain the concrete block finished product.
Preferably, at least 10 reinforcing ribs are arranged in each cubic meter of the finished building block.
Add graphite fiber and the silica powder that has higher than quartzy weathered sand purity in the material of strengthening rib, make the intensity of strengthening rib higher, erect the strengthening rib and put in the mould of the pouring of building block, just can be under the control cost circumstances, the intensity of the whole building block of promotion that can be very big, the building block is close with the composition of inside strengthening rib simultaneously, consequently, the coefficient of expansion difference is minimum between the two, can the zonulae occludens, be equipped with polyurethane foam in the strengthening rib, polyurethane foam can reduce the heat conductivity of building block, because the strengthening rib itself also evaporates and presses aerated concrete, there are a lot of gas pockets, when foaming, the foam can be deepened in the gas pocket of strengthening rib, so the two will the zonulae occludens, separation phenomenon can.
The invention has the beneficial effects that: by selecting the composition of the material and the form of the material, the building block is obtained, under the condition of ensuring various excellent performances, the composite material in the building block can be tightly combined with the building block, and the problems of performance reduction, abnormal sound and the like can not occur.
Drawings
The invention is further illustrated with reference to the figures and examples.
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. the building block comprises a building block body, 2. reinforcing ribs and 3. polyurethane foam.
Detailed Description
Example 1
Fig. 1 shows an autoclaved aerated concrete block for an integrated wall system, wherein: 1. the building block comprises a building block body, 2. reinforcing ribs and 3. polyurethane foam. The structure is as follows: a plurality of reinforcing ribs are arranged in the building block body, and polyurethane foam is arranged in each reinforcing rib;
in one production mode, the raw materials used by the building block body comprise the following components in percentage by mass:
50 parts of fly ash, 15 parts of portland cement, 15 parts of quartz weathered sand, 12 parts of basalt powder, 11 parts of lime powder, 6 parts of yellow sand, 7 parts of gypsum, 4 parts of sodium lignosulfonate, 2.5 parts of sodium sulfate and 1 part of aluminum paste;
the reinforcing rib raw materials comprise by mass:
45 parts of fly ash, 17 parts of portland cement, 16 parts of lime powder, 9 parts of silicon dioxide powder, 8 parts of graphite fiber, 6 parts of yellow sand, 5 parts of gypsum, 5 parts of sodium lignosulfonate, 3 parts of sodium sulfate and 1.3 parts of aluminum powder paste;
the preparation method of the reinforcing rib comprises the following steps:
(1) mixing the fly ash, the silicon dioxide powder, the yellow sand and the gypsum with water according to the mass part ratio to prepare slurry, wherein the mass of the water is 0.7 times of the total mass of the fly ash, the silicon dioxide powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a pouring stirrer for stirring, and adding the lime powder and the graphite fiber in the mass part ratio during stirring for 12 min; then, uniformly stirring and mixing the Portland cement, the sodium lignosulfonate and the sodium sulfate in parts by mass, and then conveying the mixture into a static curing room for static curing for 100min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water with the mass 9 times that of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry prepared in the step 2, stirring for 4min, and pouring into a mold provided with a vertically-arranged iron chisel;
(4) placing the die into a pre-curing chamber at 60 ℃ for curing for 5 hours to form a stable blank, demolding, drawing out the iron drill, and cutting according to the required specification to obtain a blank before the reinforcing rib kettle;
(5) conveying the blank in front of the reinforcing rib kettle into an autoclave kettle, increasing the pressure to 2.4MPa within 30min, increasing the temperature to 150 ℃, maintaining for 5h, then reducing the pressure to normal pressure within 15min, then conveying out of the building block for natural cooling, and after cooling, preparing a semi-finished product of the reinforcing rib;
(6) and (5) injecting polyurethane foam into the cavity of the semi-finished product of the reinforcing rib prepared in the step (5) to prepare a finished product of the reinforcing rib.
The preparation method of the building block comprises the following steps:
(1) mixing the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum with water according to the mass part ratio to prepare slurry, wherein the mass of the water is 0.7 times of the total mass of the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a stirrer for stirring, and adding the lime powder in the mass part ratio during stirring for 10 min; then adding the Portland cement, the sodium lignosulfonate and the sodium sulfate in the mass parts, stirring for 6min, and then conveying into a static curing room for static curing for 80min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water with the mass 8 times that of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry obtained in the step 2, stirring for 5min, and pouring into a mold with reinforcing ribs, wherein polyurethane foam is arranged in the reinforcing ribs;
(4) placing the die into a precuring chamber at 55 ℃ for curing for 6h to form a stable blank, demolding, and cutting according to the required specification to obtain a blank before the kettle;
(5) and conveying the blank in front of the autoclave into an autoclave, increasing the pressure to 1.8MPa within 15min, increasing the temperature to 165 ℃, maintaining for 4h, reducing the pressure to normal pressure within 8min, then conveying out the building block for natural cooling, and warehousing after cooling to obtain a concrete building block finished product.
In the example, the reinforcing ribs are cylinders with the outer diameter of 18cm and the inner cavity diameter of 8cm, and 12 reinforcing ribs are uniformly distributed in each cubic meter of the finished building block.
Example 2
Fig. 1 shows an integrated wall system used autoclaved aerated concrete block, and the other production mode is as follows:
the building block body comprises the following raw materials in parts by mass:
55 parts of fly ash, 20 parts of portland cement, 15 parts of quartz weathered sand, 12 parts of basalt powder, 14 parts of lime powder, 7 parts of yellow sand, 6 parts of gypsum, 5 parts of sodium lignosulfonate, 3 parts of sodium sulfate and 1.2 parts of aluminum powder paste;
the reinforcing rib raw materials comprise by mass:
40 parts of fly ash, 20 parts of portland cement, 13 parts of lime powder, 10 parts of silicon dioxide powder, 10 parts of graphite fiber, 5 parts of yellow sand, 4 parts of gypsum, 6 parts of sodium lignosulfonate, 3 parts of sodium sulfate and 1.4 parts of aluminum powder paste;
the preparation method of the reinforcing rib comprises the following steps:
(1) mixing the fly ash, the silicon dioxide powder, the yellow sand and the gypsum with water according to the mass part ratio to prepare slurry, wherein the mass of the water is 0.6 times of the total mass of the fly ash, the silicon dioxide powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a pouring stirrer for stirring, and adding the lime powder and the graphite fiber in the mass part ratio during stirring for 13 min; then, uniformly stirring and mixing the Portland cement, the sodium lignin sulfonate and the sodium sulfate in parts by mass, and then conveying the mixture into a static curing room for static curing for 120min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water with the mass being 12 times that of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry prepared in the step 2, stirring for 5min, and pouring into a mold provided with a vertically-arranged iron chisel;
(4) placing the die into a pre-curing chamber at 50 ℃ for curing for 7h to form a stable blank, demolding, drawing out the iron drill, and cutting according to the required specification to obtain a blank before the reinforcing rib kettle;
(5) conveying the blank in front of the reinforcing rib kettle into an autoclave kettle, increasing the pressure to 2.5MPa within 50min, increasing the temperature to 150 ℃, maintaining for 6h, then reducing the pressure to normal pressure within 15min, then conveying out of the building block, naturally cooling, and obtaining a semi-finished product of the reinforcing rib after cooling;
(6) and (5) injecting polyurethane foam into the cavity of the semi-finished product of the reinforcing rib prepared in the step (5) to prepare a finished product of the reinforcing rib.
The preparation method of the building block comprises the following steps:
(1) mixing the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum with water according to the mass part ratio to prepare slurry, wherein the mass of the water is 0.8 times of the total mass of the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a stirrer for stirring, and adding the lime powder in the mass part ratio during stirring for 12 min; then adding the Portland cement, the sodium lignosulfonate and the sodium sulfate in the mass parts, stirring for 6min, and then conveying into a static curing room for static curing for 90min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water which is 10 times of the mass of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry obtained in the step (2), stirring for 5min, and pouring into a mold with reinforcing ribs, wherein polyurethane foam is arranged in the reinforcing ribs;
(4) placing the die into a pre-curing chamber at 60 ℃ for curing for 5.5 hours to form a stable blank, then demoulding, and cutting according to the required specification to obtain a blank before the kettle;
(5) and conveying the blank in front of the autoclave into an autoclave, increasing the pressure to 1.9MPa within 12min, increasing the temperature to 175 ℃, maintaining for 4.5h, then reducing the pressure to normal pressure within 7min, then conveying out the building block for natural cooling, and warehousing after cooling to obtain the concrete building block finished product.
In the example, the reinforcing ribs are cylinders with the outer diameter of 20cm and the inner cavity diameter of 10cm, and 10 reinforcing ribs are uniformly distributed in each cubic meter of the finished building block.
Claims (2)
1. The utility model provides an integrated wall system is with evaporating aerated concrete block which presses which characterized by: a plurality of reinforcing ribs are arranged in the building block body, and polyurethane foam is arranged in each reinforcing rib;
the building block body comprises the following raw materials in parts by mass: 45-60 parts of fly ash, 10-25 parts of portland cement, 10-20 parts of quartz weathered sand, 10-15 parts of basalt powder, 10-15 parts of lime powder, 5-10 parts of yellow sand, 5-9 parts of gypsum, 3-5 parts of sodium lignosulfonate, 2-3 parts of sodium sulfate and 0.7-1.3 parts of aluminum powder paste;
the reinforcing rib raw materials comprise by mass: 40-50 parts of fly ash, 15-23 parts of portland cement, 10-15 parts of lime powder, 8-10 parts of silicon dioxide powder, 8-10 parts of graphite fiber, 5-8 parts of yellow sand, 4-8 parts of gypsum, 3-7 parts of sodium lignosulfonate, 2.5-3.5 parts of sodium sulfate and 0.5-1.5 parts of aluminum powder paste;
the preparation method of the reinforcing rib comprises the following steps:
(1) mixing the fly ash, the silicon dioxide powder, the yellow sand and the gypsum in parts by mass with water to prepare slurry, wherein the mass of the water is 0.5-0.7 times of the total mass of the fly ash, the silicon dioxide powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a pouring stirrer for stirring, and adding the lime powder and the graphite fiber in the mass part ratio during stirring for 10-20 min; then uniformly stirring and mixing the Portland cement, the sodium lignosulfonate and the sodium sulfate in parts by mass, and then conveying the mixture into a static curing chamber for static curing for 100-180min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water with the mass 7-12 times of that of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry prepared in the step 2, stirring for 2-6min, and pouring into a mold provided with a vertically-arranged iron chisel;
(4) placing the die into a pre-curing chamber at 50-60 ℃ for curing for 4-8h to form a stable blank, demolding, extracting the iron drill rod, and cutting according to the required specification to obtain a blank before the reinforcing rib kettle;
(5) conveying the blank in front of the reinforcing rib kettle into a still kettle, increasing the pressure to 2-3MPa within 20-60min, increasing the temperature to 140-160 ℃, maintaining for 4-6h, then reducing the pressure to normal pressure within 10-20min, then conveying out of the building block, naturally cooling, and obtaining a semi-finished product of the reinforcing rib after cooling;
(6) and (5) injecting polyurethane foam into the cavity of the semi-finished product of the reinforcing rib prepared in the step (5) to prepare a finished product of the reinforcing rib.
2. The preparation method of the autoclaved aerated concrete block for the integrated wall surface system, which is disclosed by claim 1, is characterized by comprising the following steps of: the preparation method comprises the following steps:
(1) mixing the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum with water according to the mass part ratio to prepare slurry, wherein the mass of the water is 0.6-0.8 time of the total mass of the fly ash, the quartz weathered sand, the basalt powder, the yellow sand and the gypsum;
(2) adding the slurry prepared in the step 1 into a stirrer for stirring, and adding the lime powder in the mass part ratio during stirring for 8-13 min; then adding the Portland cement, the sodium lignosulfonate and the sodium sulfate in the mass portion ratio, stirring for 5-8min, and then conveying into a static curing room for static curing for 70-110min to thicken the mixture to obtain total slurry;
(3) putting the aluminum powder paste into a stirring tank, adding water with the mass 6-10 times that of the aluminum powder paste, uniformly stirring to obtain aluminum powder liquid, adding the aluminum powder liquid into the total slurry in the step 2, stirring for 3-6min, and pouring into a mold provided with a plurality of reinforcing ribs;
(4) placing the die into a pre-curing chamber at 50-65 ℃ for curing for 5-7h to form a stable blank, demolding, and cutting according to the required specification to obtain a blank before the kettle;
(5) conveying the blank in front of the autoclave into an autoclave, increasing the pressure to 1.5-2.5MPa within 10-20min, increasing the temperature to 160-180 ℃, maintaining for 3-5h, then reducing the pressure to normal pressure within 5-10min, then conveying out the block, naturally cooling, and warehousing after cooling to obtain the concrete block finished product.
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| CN111809788A (en) * | 2020-07-20 | 2020-10-23 | 三亚明亮环保科技有限公司 | Autoclaved aerated concrete block and manufacturing method thereof |
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| CN114507026A (en) * | 2022-04-19 | 2022-05-17 | 佛山市绿富域环保科技有限公司 | Environment-friendly ecological brick taking household garbage incinerator slag as raw material and preparation process thereof |
| CN115849944B (en) * | 2022-12-21 | 2023-08-11 | 江苏恒尚节能科技股份有限公司 | Aerated concrete block for building curtain wall and preparation method thereof |
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