CN113045280A - Autoclaved aerated concrete block and preparation process thereof - Google Patents
Autoclaved aerated concrete block and preparation process thereof Download PDFInfo
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- CN113045280A CN113045280A CN202110231666.8A CN202110231666A CN113045280A CN 113045280 A CN113045280 A CN 113045280A CN 202110231666 A CN202110231666 A CN 202110231666A CN 113045280 A CN113045280 A CN 113045280A
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- concrete block
- aerated concrete
- autoclaved aerated
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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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- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
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- 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
Abstract
The invention discloses an autoclaved aerated concrete block which comprises the following components in parts by weight: 10-20 parts of cement, 20-30 parts of lime, 50-70 parts of sand, 10-20 parts of fly ash, 3-5 parts of gypsum, 8-20 parts of an air entraining agent and 8-20 parts of a regulator; the autoclaved aerated concrete block according to claim 1, characterized in that: the main components in the fly ash are as follows: 45% -48% of silicon dioxide, 24% -25% of aluminum trioxide, 12% -14% of ferric trioxide and 14% -16% of carbon; the autoclaved aerated concrete block prepared from the raw material components has higher strength; meanwhile, the air entraining agent and the regulator are added, so that the chemical reaction generated in the stirring process can be better activated, and the production process is more stable.
Description
Technical Field
The invention relates to the technical field of concrete block production, in particular to an autoclaved aerated concrete block and a preparation process thereof.
Background
The autoclaved aerated concrete block is a porous concrete product prepared by using fly ash, lime, 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 weight of the unit volume of the autoclaved aerated concrete block is one third of that of a clay brick, the heat insulation performance is 3-4 times that of the clay brick, the sound insulation performance is 2 times that of the clay brick, the anti-permeability performance is more than one time that of the clay brick, the fire resistance performance is 6-8 times that of reinforced concrete, and the masonry strength of the block is about 80% of the strength of the block.
There are many areas that can be improved during the production of autoclaved aerated concrete blocks.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the autoclaved aerated concrete block and the preparation process thereof, and the autoclaved aerated concrete block and the preparation process thereof can be optimized.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the autoclaved aerated concrete block comprises the following components in parts by weight: 10-20 parts of cement, 20-30 parts of lime, 50-70 parts of sand, 10-20 parts of fly ash, 3-5 parts of gypsum, 8-20 parts of an air entraining agent and 8-20 parts of a regulator.
Further, the main components in the fly ash are as follows: 45% -48% of silicon dioxide, 24% -25% of aluminum trioxide, 12% -14% of ferric trioxide and 14% -16% of carbon;
furthermore, the sand is river sand, river sand or mountain sand, and the gypsum is gypsum.
The preparation process of the autoclaved aerated concrete block comprises the following steps:
s1, primarily crushing gypsum raw materials with large volume by using a crusher;
s2, screening the raw materials subjected to primary crushing to screen out impurities;
s3, respectively filling lime, sand, fly ash and gypsum powder into corresponding raw material storage tanks in a batching plant;
s4, adding various raw materials, air-entraining agents and regulator air-entraining agents into a slurry metering tank according to the weight portion proportion, blending, and stirring under the action of a stirrer to form mixed slurry;
s5, pouring the mixed slurry into a mold in a static curing room to finish pouring and static stopping;
s6, demolding is carried out after the pouring and the standing are finished, and cutting is carried out according to production requirements to form a blank body;
and S7, conveying the blank into a still kettle for steam curing, and obtaining the autoclaved aerated concrete block after the steam curing is finished.
Further, the temperature in the still kettle is 175-180 ℃, and the air pressure in the still kettle is 8 atmospheric pressures;
further, the steam curing time in the S7 is 16-20 hours;
further, the static curing chamber, the raw material storage tank, the slurry metering tank, the stirrer and the still kettle are all arranged in the batching plant;
furthermore, an automatic batching system is arranged in the batching building.
Compared with the prior art, the invention has the beneficial effects that:
1. the autoclaved aerated concrete block prepared from the raw material components has higher strength; meanwhile, the air entraining agent and the regulator are added, so that the chemical reaction generated in stirring can be better activated, and the production process is more stable;
2. the pulverized coal in the raw materials is the main solid waste discharged by an ash coal-fired power plant and a coal gangue and coal slime comprehensive utilization power plant, so that the comprehensive utilization of resources is realized, and the purchasing cost of the raw materials can be reduced, thereby improving the production profit;
3. equipment and operation chambers required by each process are integrated in the batching building, so that the transportation cost of raw materials is reduced, and the production efficiency is improved; the whole process production process is controlled by an intelligent system, so that the method is more accurate and avoids the waste of raw materials.
Drawings
FIG. 1 is a flow chart of a preparation process of the autoclaved aerated concrete block.
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.
The autoclaved aerated concrete block and the preparation process thereof according to the present invention will be described in detail with reference to fig. 1: the autoclaved aerated concrete block comprises the following components in parts by weight: 10-20 parts of cement, 20-30 parts of lime, 50-70 parts of sand, 10-20 parts of fly ash, 3-5 parts of gypsum, 8-20 parts of an air entraining agent and 8-20 parts of a regulator;
the preparation process of the autoclaved aerated concrete block comprises the following steps:
s1, primarily crushing gypsum raw materials with large volume by using a crusher;
s2, screening the raw materials subjected to primary crushing to screen out impurities;
s3, respectively filling lime, sand, fly ash and gypsum powder into corresponding raw material storage tanks in a batching plant;
s4, adding various raw materials, air-entraining agents and regulator air-entraining agents into a slurry metering tank according to the weight portion proportion, blending, and stirring under the action of a stirrer to form mixed slurry;
s5, pouring the mixed slurry into a mold in a static curing room to finish pouring and static stopping;
s6, demolding is carried out after the pouring and the standing are finished, and cutting is carried out according to production requirements to form a blank body;
s7, conveying the blank into a still kettle for steam curing to obtain an autoclaved aerated concrete block;
the temperature in the still kettle is 175-180 ℃, and the air pressure in the still kettle is 8 atmospheric pressures; the steam curing time in the S7 is 16-20 hours; the static curing chamber, the raw material storage tank, the slurry metering tank, the stirrer and the still kettle are all arranged in the batching plant; an automatic batching system is arranged in the batching building.
The working principle is as follows: other impurities are often mixed in the gypsum to influence processing production, so that the gypsum is pretreated, large gypsum blocks are crushed, and the impurities are screened out by screening;
the static curing chamber, the raw material storage tank, the slurry metering tank, the stirrer and the still kettle are all arranged in the batching building, so that the whole process can be completed in the batching building; purchasing various raw materials from the outside and storing the raw materials in corresponding raw material storage tanks; then under the action of an automatic batching system, various raw materials are transmitted to a slurry metering tank according to a required proportion for batching, and a metering scale is arranged in the slurry metering tank, so that the mass of the materials in the metering tank can be obtained, and batching is accurately finished; a stirrer is arranged in the slurry metering tank, and the physical stirring and mixing in the slurry metering tank can be carried out to form slurry; then, the slurry is conveyed and poured into a mold in a static curing room through an internal pipeline to finish pouring, the static stop time is set to reach the specified time, and demolding can be carried out, wherein the demolding mode is simple overturning demolding; due to the fact that the size of the concrete building blocks is different according to different delivery requirements, the blank formed by demolding needs to be cut to finish the concrete building blocks, finally, in order to improve the property of the concrete, the concrete is placed into an autoclave, the temperature and the air pressure of the autoclave are set, and finally, the production of the autoclaved concrete is finished.
In conclusion, the autoclaved aerated concrete block prepared from the raw material components has higher strength; meanwhile, the air entraining agent and the regulator are added, so that the chemical reaction generated in stirring can be better activated, and the production process is more stable; the pulverized coal in the raw materials is the main solid waste discharged by an ash coal-fired power plant and a coal gangue and coal slime comprehensive utilization power plant, so that the comprehensive utilization of resources is realized, and the purchasing cost of the raw materials can be reduced, thereby improving the production profit; equipment and operation chambers required by each process are integrated in the batching building, so that the transportation cost of raw materials is reduced, and the production efficiency is improved; the whole process production process is controlled by an intelligent system, so that the method is more accurate and avoids the waste of raw materials.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The autoclaved aerated concrete block is characterized by comprising the following components in parts by weight: 10-20 parts of cement, 20-30 parts of lime, 50-70 parts of sand, 10-20 parts of fly ash, 3-5 parts of gypsum, 8-20 parts of an air entraining agent and 8-20 parts of a regulator.
2. The autoclaved aerated concrete block according to claim 1, characterized in that: the main components in the fly ash are as follows: 45% -48% of silicon dioxide, 24% -25% of aluminum trioxide, 12% -14% of ferric trioxide and 14% -16% of carbon.
3. The autoclaved aerated concrete block according to claim 1, characterized in that: the sand is river sand, river sand or mountain sand, and the gypsum is gypsum.
4. The preparation process of the autoclaved aerated concrete block is characterized by comprising the following steps of: the method comprises the following steps:
s1, primarily crushing gypsum raw materials with large volume by using a crusher;
s2, screening the raw materials subjected to primary crushing to screen out impurities;
s3, respectively filling lime, sand, fly ash and gypsum powder into corresponding raw material storage tanks in a batching plant;
s4, adding various raw materials, air-entraining agents and regulator air-entraining agents into a slurry metering tank according to the weight portion proportion, blending, and stirring under the action of a stirrer to form mixed slurry;
s5, pouring the mixed slurry into a mold in a static curing room to finish pouring and static stopping;
s6, demolding is carried out after the pouring and the standing are finished, and cutting is carried out according to production requirements to form a blank body;
and S7, conveying the blank into a still kettle for steam curing, and obtaining the autoclaved aerated concrete block after the steam curing is finished.
5. The autoclaved aerated concrete block preparation process according to claim 4, characterized in that: the temperature in the still kettle is 175-180 ℃, and the air pressure in the still kettle is 8 atmospheric pressures.
6. The autoclaved aerated concrete block preparation process according to claim 4, characterized in that: the steam curing time in the S7 is 16-20 hours.
7. The autoclaved aerated concrete block preparation process according to claim 4, characterized in that: the static curing chamber, the raw material storage tank, the slurry metering tank, the stirrer and the still kettle are all arranged in the batching building.
8. The autoclaved aerated concrete block preparation process according to claim 4, characterized in that: an automatic batching system is arranged in the batching building.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110231666.8A CN113045280A (en) | 2021-03-02 | 2021-03-02 | Autoclaved aerated concrete block and preparation process thereof |
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| CN202110231666.8A CN113045280A (en) | 2021-03-02 | 2021-03-02 | Autoclaved aerated concrete block and preparation process thereof |
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| CN113045280A true CN113045280A (en) | 2021-06-29 |
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| CN202110231666.8A Pending CN113045280A (en) | 2021-03-02 | 2021-03-02 | Autoclaved aerated concrete block and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115026924A (en) * | 2022-07-08 | 2022-09-09 | 江苏金立方环保科技有限公司 | Manufacturing method of autoclaved aerated concrete block |
Citations (4)
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|---|---|---|---|---|
| CN108585736A (en) * | 2018-05-31 | 2018-09-28 | 佛山市陵谐环保科技有限公司 | A kind of Anti-pressure autoclave aerated concrete building block |
| CN109265123A (en) * | 2018-11-27 | 2019-01-25 | 襄阳华壁新型建材有限公司 | A kind of coal ash autoclaved air-entrained concrete building block and its production method |
| CN109320283A (en) * | 2018-11-27 | 2019-02-12 | 襄阳华壁新型建材有限公司 | A kind of coal ash autoclaved air-entrained concrete building block |
| CN111268985A (en) * | 2020-01-15 | 2020-06-12 | 浙江富春江环保热电股份有限公司 | Autoclaved aerated concrete block and preparation process thereof |
-
2021
- 2021-03-02 CN CN202110231666.8A patent/CN113045280A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585736A (en) * | 2018-05-31 | 2018-09-28 | 佛山市陵谐环保科技有限公司 | A kind of Anti-pressure autoclave aerated concrete building block |
| CN109265123A (en) * | 2018-11-27 | 2019-01-25 | 襄阳华壁新型建材有限公司 | A kind of coal ash autoclaved air-entrained concrete building block and its production method |
| CN109320283A (en) * | 2018-11-27 | 2019-02-12 | 襄阳华壁新型建材有限公司 | A kind of coal ash autoclaved air-entrained concrete building block |
| CN111268985A (en) * | 2020-01-15 | 2020-06-12 | 浙江富春江环保热电股份有限公司 | Autoclaved aerated concrete block and preparation process thereof |
Non-Patent Citations (1)
| Title |
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| 周洪燕主编: "《土木工程材料》", 31 August 2018, 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115026924A (en) * | 2022-07-08 | 2022-09-09 | 江苏金立方环保科技有限公司 | Manufacturing method of autoclaved aerated concrete block |
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Application publication date: 20210629 |
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