CN110818335A - Aerated concrete brick and preparation method thereof - Google Patents
Aerated concrete brick and preparation method thereof Download PDFInfo
- Publication number
- CN110818335A CN110818335A CN201911281450.1A CN201911281450A CN110818335A CN 110818335 A CN110818335 A CN 110818335A CN 201911281450 A CN201911281450 A CN 201911281450A CN 110818335 A CN110818335 A CN 110818335A
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- China
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- aerated concrete
- concrete brick
- powder
- hollow polymer
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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
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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
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Abstract
The invention provides an aerated concrete brick and a preparation method thereof, wherein the aerated concrete brick comprises the following raw materials, by mass, 15-25 parts of siliceous raw materials, 8-10 parts of fly ash, 30-50 parts of cement, 20-40 parts of sand, 50-60 parts of marble powder, 1-3 parts of hollow polymer microspheres, 5-15 parts of resin, 1-3 parts of a curing agent, 1-3 parts of an expanding agent, 1-3 parts of a water-retaining agent and 0.5-1.0 part of aluminum powder. The marble powder is used as a raw material, so that the mechanical strength of the aerated concrete brick is improved, the particle size is small, the dispersion in the aerated concrete brick is more uniform, and the mechanical balance of the aerated concrete brick is enhanced. The hollow polymer microspheres fill the defects generated by shrinkage in the shrinkage process, decompose external force when receiving impact force, play a role in buffering, and have better impact resistance and shock resistance.
Description
Technical Field
The invention belongs to the technical field of preparation of environment-friendly materials, and relates to an aerated concrete brick and a preparation method of the aerated concrete brick.
Background
Cement concrete has experienced the development of low, medium, high and even ultra-high strength since the advent, and it seems that people are always willing to pursue an ever-increasing strength. However, the accidents of breaking and collapsing caused by the early failure of concrete structures due to the deterioration of materials have been rare and even more serious at home and abroad since four and fifty years ago. The reinforcement of concrete structures is a very hot topic all the time, with the rapid development of national economy, the living standard of people is increasingly improved, the requirements of people on buildings are continuously developed, and many existing buildings, no matter the appearance condition or the use function, cannot meet the requirements of modern life and continue to be reinforced and transformed. Then, in the process of reinforcement and reconstruction, the proper materials meet the construction requirements and the requirements of the use function and safety and environmental protection of the building, which is very important content.
The autoclaved aerated concrete brick is a novel light heat-insulating building material which is prepared by taking a siliceous material and a calcareous material as raw materials through the processes of proportioning pouring, gas expansion, cutting, steaming, curing and the like, has the production and application history of more than 60 years in China, has the characteristics of light weight and good heat-insulating property, is widely applied to industrial and civil buildings, and is the most mature novel wall material of the production technology and the application technology at present. The autoclaved aerated concrete brick is light in weight, is divided into 300-800 kg/m3 according to different grades, is only about 1/3 of clay brick, can simplify the foundation for high-rise buildings in areas with low ground endurance, improves the shock resistance, and reduces the dead weight of the building. Because the aerated concrete brick has good heat preservation and heat insulation performance, the energy consumption of heating and refrigeration can be saved, when the aerated concrete brick has the same heat preservation effect as a clay brick, the thickness of a wall body can be greatly reduced, the material consumption is saved, the construction investment is reduced, and meanwhile, the using area of a building is increased.
Disclosure of Invention
The invention aims to provide an aerated concrete brick, which solves the problem of poor shock resistance in clay brick weight in the prior art.
The invention also aims to provide a preparation method of the aerated concrete brick, which solves the problem of high preparation cost of the aerated concrete brick in the prior art.
The technical scheme adopted by the invention is that,
the aerated concrete brick comprises the following raw materials, by mass, 15-25 parts of siliceous raw materials, 8-10 parts of fly ash, 30-50 parts of cement, 20-40 parts of sand, 50-60 parts of marble powder, 1-3 parts of hollow polymer microspheres, 5-15 parts of resin, 1-3 parts of curing agents, 1-3 parts of expanding agents, 1-3 parts of water-retaining agents and 0.5-1.0 part of aluminum powder.
Yet another feature of the present invention is that,
the marble powder comprises metamorphic marble powder, artificial marble waste and limestone powder in a mass ratio of (1-5) to (1-4) to 3.
The particle size of the hollow polymer microspheres is 1-10 mu m.
A preparation method of aerated concrete bricks comprises the following steps:
step 1, weighing 15-25 parts of siliceous raw materials, 8-10 parts of fly ash, 30-50 parts of cement, 20-40 parts of sand, 50-60 parts of marble powder, 1-3 parts of hollow polymer microspheres, 5-15 parts of resin, 1-3 parts of curing agent, 1-3 parts of expanding agent and 1-3 parts of water-retaining agent according to mass fraction.
Step 2, feeding the siliceous raw material and the fly ash weighed in the step 1 into a grinding mill for grinding, then pouring the mixture into a screen with the mesh number of 100-120 for filtering, and pouring the filtered siliceous raw material and the fly ash powder into a stirring tank;
step 3, sequentially adding the cement, the marble powder, the hollow polymer microspheres, the resin, the curing agent and the expanding agent weighed in the step 1 into a stirring tank in the step 2, stirring for 5-10 min, and rotating at the speed of 700-900 r/min;
step 4, adding the aluminum powder weighed in the step 1 into the material stirred in the step 3, and stirring for 2-5 min;
step 5, heating the material reacted in the step 4 for 60-80 min at 50-70 ℃, standing for 60-120 min to obtain a blank, and cutting the blank;
and 6, steam curing the blank obtained in the step 5 for 10-12 hours under the condition of high temperature and high pressure, and reducing the pressure to the atmospheric pressure to obtain the aerated concrete brick.
And 6, performing high-temperature and high-pressure conditions at the temperature of 200-300 ℃ and the pressure of 1-2 MPa.
The invention has the beneficial effects that the marble powder is used as the raw material, the mechanical strength of the aerated concrete brick is improved, the deformation is reduced, the temperature resistance is improved, the cost is reduced, the waste is utilized, and the environment is protected. The marble powder has small particle size, is more uniformly dispersed in the aerated concrete brick, and enhances the mechanical balance of the aerated concrete brick. The hollow polymer microspheres can fill the defects generated by shrinkage in the shrinkage process, and meanwhile, due to the hollow structure, when the hollow polymer microspheres are subjected to impact force or under the condition of shaking, external force is decomposed, the buffering effect is achieved, the hollow polymer microspheres have good impact resistance and shock resistance, and the dry volume weight of the brickwork can be reduced due to the structure of the hollow polymer microspheres. The resin is cured to form a three-dimensional cross-linked network structure, and the hollow polymer microspheres, the marble powder and the resin have a synergistic interaction effect, so that the internal structure of the cured aerated concrete brick is more compact, the strength and the impact resistance of the aerated concrete brick are enhanced, and cracking is prevented. Improve the acid and alkali resistance. The water-retaining agent and the expanding agent act on the aerated concrete brick and act together with the resin, so that the aerated concrete brick has good solidification effect, the sources of the fly ash and the lime are sufficient, the production cost can be saved, and the harm to a human body during production is effectively controlled; the preparation method of the aerated concrete brick is simple in process, a reaction kettle does not need to be transferred for many times, the stirring, the pouring, the foaming and the cutting are all carried out in the same reaction kettle, and the operation is simple and convenient; the strength and the heat resistance of the aerated concrete brick of the invention both accord with the national standard, have excellent performance, and can be widely applied to industrial and civil buildings.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The aerated concrete brick comprises the following raw materials, by mass, 15-25 parts of siliceous raw materials, 8-10 parts of fly ash, 30-50 parts of cement, 20-40 parts of sand, 50-60 parts of marble powder, 1-3 parts of hollow polymer microspheres, 5-15 parts of resin, 1-3 parts of curing agents, 1-3 parts of expanding agents, 1-3 parts of water-retaining agents and 0.5-1.0 part of aluminum powder.
The marble powder comprises metamorphic marble powder, artificial marble waste and limestone powder in a mass ratio of (1-5) to (1-4) to 3. The particle size of the hollow polymer microspheres is 1-10 mu m.
A preparation method of aerated concrete bricks comprises the following steps:
step 1, weighing 15-25 parts of siliceous raw materials, 8-10 parts of fly ash, 30-50 parts of cement, 20-40 parts of sand, 50-60 parts of marble powder, 1-3 parts of hollow polymer microspheres, 5-15 parts of resin, 1-3 parts of curing agent, 1-3 parts of expanding agent and 1-3 parts of water-retaining agent according to mass fraction.
Step 2, feeding the siliceous raw material and the fly ash weighed in the step 1 into a grinding mill for grinding, then pouring the mixture into a screen with the mesh number of 100-120 for filtering, and pouring the filtered siliceous raw material and the fly ash powder into a stirring tank;
step 3, sequentially adding the cement, the marble powder, the hollow polymer microspheres, the resin, the curing agent and the expanding agent weighed in the step 1 into a stirring tank in the step 2, stirring for 5-10 min, and rotating at the speed of 700-900 r/min;
step 4, adding the aluminum powder weighed in the step 1 into the material stirred in the step 3, and stirring for 2-5 min;
step 5, heating the material reacted in the step 4 for 60-80 min at 50-70 ℃, standing for 60-120 min to obtain a blank, and cutting the blank;
and 6, steam curing the blank obtained in the step 5 for 10-12 hours at the temperature of 200-300 ℃ and under the pressure of 1-2 MPa, and reducing the pressure to the atmospheric pressure to obtain the aerated concrete brick.
Example 1
Step 1, weighing 15 parts of siliceous raw materials, 8 parts of fly ash, 30-50 parts of cement, 20 parts of sand, 50 parts of marble powder, 1 part of hollow polymer microspheres, 5 parts of resin, 1 part of curing agent, 1 part of expanding agent and 1 part of water-retaining agent according to mass fraction.
Step 2, feeding the siliceous raw material and the fly ash weighed in the step 1 into a grinding mill for grinding, then pouring the ground siliceous raw material and the fly ash into a screen with the mesh number of 100 for filtering, and pouring the filtered siliceous raw material and the fly ash powder into a stirring tank;
step 3, sequentially adding the cement, the marble powder, the hollow polymer microspheres, the resin, the curing agent and the expanding agent weighed in the step 1 into the stirring tank in the step 2, and stirring for 5min at the rotating speed of 700 r/min;
step 4, adding the aluminum powder weighed in the step 1 into the stirred material in the step 3, and stirring for 2 min;
step 5, heating the material reacted in the step 4 for 60min at 50 ℃, standing for 60min to obtain a blank, and then cutting the blank;
and 6, steam curing the blank obtained in the step 5 for 10 hours at the temperature of 200 ℃ and under the pressure of 1MPa, and reducing the pressure to the atmospheric pressure to obtain the aerated concrete brick.
Example 2
Step 1, respectively weighing 25 parts of siliceous raw material, 10 parts of fly ash, 50 parts of cement, 40 parts of sand, 60 parts of marble powder, 3 parts of hollow polymer microspheres, 15 parts of resin, 3 parts of curing agent, 3 parts of expanding agent and 3 parts of water-retaining agent according to mass fraction.
Step 2, feeding the siliceous raw material and the fly ash weighed in the step 1 into a grinding mill for grinding, then pouring the mixture into a screen with the mesh number of 120 for filtering, and pouring the filtered siliceous raw material and the fly ash powder into a stirring tank;
step 3, sequentially adding the cement, the marble powder, the hollow polymer microspheres, the resin, the curing agent and the expanding agent weighed in the step 1 into the stirring tank in the step 2, and stirring for 10min at the rotating speed of 900 r/min;
step 4, adding the aluminum powder weighed in the step 1 into the stirred material in the step 3, and stirring for 5 min;
step 5, heating the material reacted in the step 4 for 80min at the heating temperature of 70 ℃, standing for 120min to obtain a blank, and then cutting the blank;
and 6, steam curing the blank obtained in the step 5 for 12 hours at the temperature of 300 ℃ and under the pressure of 2MPa, and reducing the pressure to the atmospheric pressure to obtain the aerated concrete brick.
Example 3
Step 1, weighing 20 parts of siliceous raw material, 9 parts of fly ash, 40 parts of cement, 30 parts of sand, 55 parts of marble powder, 2 parts of hollow polymer microspheres, 10 parts of resin, 2 parts of curing agent, 2 parts of expanding agent and 2 parts of water-retaining agent according to mass fraction.
Step 2, feeding the siliceous raw material and the fly ash weighed in the step 1 into a grinding mill for grinding, then pouring the mixture into a screen with the mesh number of 110 for filtering, and pouring the filtered siliceous raw material and the fly ash powder into a stirring tank;
step 3, sequentially adding the cement, the marble powder, the hollow polymer microspheres, the resin, the curing agent and the expanding agent weighed in the step 1 into the stirring tank in the step 2, and stirring for 7.5min at the rotating speed of 800 r/min;
step 4, adding the aluminum powder weighed in the step 1 into the stirred material in the step 3, and stirring for 3 min;
step 5, heating the material reacted in the step 4 for 60-80 min at the heating temperature of 60 ℃, standing for 90min to obtain a blank, and then cutting the blank;
and 6, steam curing the blank obtained in the step 5 for 11 hours at the temperature of 2500 ℃ and under the pressure of 1.5MPa, and reducing the pressure to the atmospheric pressure to obtain the aerated concrete brick.
Claims (5)
1. The aerated concrete brick is characterized by comprising, by mass, 15-25 parts of siliceous raw materials, 8-10 parts of fly ash, 30-50 parts of cement, 20-40 parts of sand, 50-60 parts of marble powder, 1-3 parts of hollow polymer microspheres, 5-15 parts of resin, 1-3 parts of curing agents, 1-3 parts of expanding agents, 1-3 parts of water-retaining agents and 0.5-1.0 part of aluminum powder.
2. The aerated concrete brick of claim 1, wherein the marble powder comprises metamorphic marble powder, artificial marble waste and limestone powder in a mass ratio of (1-5): 1-4): 3.
3. The aerated concrete brick according to claim 1, wherein the hollow polymer microspheres have a particle size of 1 to 10 μm.
4. The preparation method of the aerated concrete brick is characterized by comprising the following steps:
step 1, weighing 15-25 parts of siliceous raw materials, 8-10 parts of fly ash, 30-50 parts of cement, 20-40 parts of sand, 50-60 parts of marble powder, 1-3 parts of hollow polymer microspheres, 5-15 parts of resin, 1-3 parts of curing agent, 1-3 parts of expanding agent and 1-3 parts of water-retaining agent according to mass fraction.
Step 2, feeding the siliceous raw material and the fly ash weighed in the step 1 into a grinding mill for grinding, then pouring the mixture into a screen with the mesh number of 100-120 for filtering, and pouring the filtered siliceous raw material and the fly ash powder into a stirring tank;
step 3, sequentially adding the cement, the marble powder, the hollow polymer microspheres, the resin, the curing agent and the expanding agent weighed in the step 1 into a stirring tank in the step 2, stirring for 5-10 min, and rotating at the speed of 700-900 r/min;
step 4, adding the aluminum powder weighed in the step 1 into the material stirred in the step 3, and stirring for 2-5 min;
step 5, heating the material reacted in the step 4 for 60-80 min at 50-70 ℃, standing for 60-120 min to obtain a blank, and cutting the blank;
and 6, steam curing the blank obtained in the step 5 for 10-12 hours under the condition of high temperature and high pressure, and reducing the pressure to the atmospheric pressure to obtain the aerated concrete brick.
5. The method for preparing the aerated concrete brick according to claim 4, wherein the high temperature and high pressure are 200-300 ℃ and 1-2 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911281450.1A CN110818335A (en) | 2019-12-13 | 2019-12-13 | Aerated concrete brick and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911281450.1A CN110818335A (en) | 2019-12-13 | 2019-12-13 | Aerated concrete brick and preparation method thereof |
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| CN110818335A true CN110818335A (en) | 2020-02-21 |
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| CN201911281450.1A Pending CN110818335A (en) | 2019-12-13 | 2019-12-13 | Aerated concrete brick and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8795428B1 (en) * | 2011-10-07 | 2014-08-05 | Boral Ip Holdings (Australia) Pty Limited | Aerated inorganic polymer compositions and methods of making same |
| CN107285696A (en) * | 2017-06-22 | 2017-10-24 | 合肥永泰新型建材有限公司 | A kind of aerated concrete brick laying and preparation method thereof |
| CN107601989A (en) * | 2017-10-12 | 2018-01-19 | 贺州学院 | Rotten Marble Powder aerated concrete brick laying and preparation method thereof |
| CN108341647A (en) * | 2018-04-26 | 2018-07-31 | 合肥金云新材料有限公司 | A kind of air-entrained concrete building block and preparation method thereof |
-
2019
- 2019-12-13 CN CN201911281450.1A patent/CN110818335A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8795428B1 (en) * | 2011-10-07 | 2014-08-05 | Boral Ip Holdings (Australia) Pty Limited | Aerated inorganic polymer compositions and methods of making same |
| CN107285696A (en) * | 2017-06-22 | 2017-10-24 | 合肥永泰新型建材有限公司 | A kind of aerated concrete brick laying and preparation method thereof |
| CN107601989A (en) * | 2017-10-12 | 2018-01-19 | 贺州学院 | Rotten Marble Powder aerated concrete brick laying and preparation method thereof |
| CN108341647A (en) * | 2018-04-26 | 2018-07-31 | 合肥金云新材料有限公司 | A kind of air-entrained concrete building block and preparation method thereof |
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Application publication date: 20200221 |