CN111039638A - Production method of aerated brick with cement paste film capable of being rapidly produced - Google Patents
Production method of aerated brick with cement paste film capable of being rapidly produced Download PDFInfo
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- CN111039638A CN111039638A CN201811182793.8A CN201811182793A CN111039638A CN 111039638 A CN111039638 A CN 111039638A CN 201811182793 A CN201811182793 A CN 201811182793A CN 111039638 A CN111039638 A CN 111039638A
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- Prior art keywords
- slurry
- cement
- brick
- parts
- aerated brick
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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
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of aerated bricks, in particular to a production method of an aerated brick with a cement paste film, which can be rapidly produced, a, mixing and stirring raw materials according to a proportion to obtain slurry; b. adding air-entrapping aluminum powder into the slurry, stirring, and pouring into a mold frame; c. gas generation and initial setting; d. cutting the green body; e. steam pressure curing; f. spraying cement paste on the surface, and continuing autoclaved curing; g. the natural curing is carried out, the silica micropowder and the initial setting slurry are added into the raw materials, the generation of hydration products can be facilitated, hydration product crystals such as calcium silicate hydrate in the initial setting slurry can be used as crystal nuclei to rapidly grow up to form a crystallization mechanism, the crystal nuclei and the crystallization mechanism are both beneficial to shortening the autoclaved curing time, so that the production efficiency is improved, cement slurry is sprayed on the surface of the aerated brick, so that the cement slurry is combined with the aerated brick at the surface to form a surface layer which is higher in strength and difficult to powder, and the surface layer is easier to bond with the mortar when a wall is built.
Description
Technical Field
The invention relates to the technical field of aerated bricks, in particular to a production method of an aerated brick with a cement paste film, which can be rapidly produced.
Background
The aerated brick, i.e. the autoclaved aerated concrete block, is a light porous silicate product produced by a high-temperature autoclaved equipment process, contains a large amount of uniform and fine air holes after gas generation, has the advantages of light weight, high strength, durability, heat preservation, sound absorption, water resistance, shock resistance, rapid construction (compared with clay sintered bricks), strong processability and the like, and is an excellent novel wall material.
At present, the aerated bricks are mostly improved on the selection of raw materials, for example, the aerated bricks produced by using waste building rubbish and a processing method thereof disclosed by CN102887725A, the aerated bricks produced by using modified straw ash and a processing method thereof disclosed by CN102887674A, the aerated bricks using slag as a matrix and a processing method thereof disclosed by CN102992803A and the like, and the methods are all used for improving the performance of the aerated bricks by selecting different raw materials and proportions. However, the aerated bricks in the prior art generally need to be subjected to primary curing and autoclaved curing stages, particularly, the autoclaved curing time is long, the production efficiency is greatly influenced, in addition, the surfaces of the aerated bricks are easy to be powdered, are not easy to be well bonded with mortar, the surface strength is low, and the aerated bricks are easy to crush when being collided during transportation and carrying.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the method for producing the aerated brick with the cement paste film, which can be used for quickly producing the aerated brick with the cement paste film, can shorten the steam pressure curing time and shorten the product processing period, thereby improving the production efficiency, improving the surface performance, being easier to bond with the cement paste and having higher surface strength.
The technical scheme adopted by the invention for solving the technical problems is as follows: the production method of the aerated brick with the cement paste film, which can be rapidly produced, comprises the following steps: a. mixing and stirring portland cement, fly ash, gypsum powder, silica micro powder, lime, water and the slurry initially set in the last production according to a certain proportion to obtain slurry; b. keeping the temperature of the slurry at 45-55 ℃, adding air-entrapping aluminum powder, stirring for 1 minute, and pouring the slurry into an air-entrapping brick mold frame; c. sending the mold frame and the slurry inside the mold frame into a primary curing chamber for gas generation and primary setting, wherein the temperature of the primary curing chamber is 50-60 ℃, the primary curing time is 2 hours, and the slurry is solidified into a blank; d. separating the green body from the mold frame, and cutting the green body to obtain a brick block; e. conveying the bricks to an autoclave for autoclave curing, wherein the pressure is 1.2-1.8 Mpa, the temperature is 100-120 ℃, and the autoclave time is 2 hours; f. mixing cement and water to prepare cement paste, spraying the cement paste on the inner side and the outer side of the brick, and then continuing to perform autoclaved curing for 1 hour; g. and stacking the bricks outdoors, and naturally curing for more than 10 days to obtain the finished aerated brick.
Preferably, the Portland cement, the fly ash, the gypsum powder, the silica micropowder, the lime, the water and the initially-set slurry comprise the following components in parts by weight: 30-40 parts of Portland cement, 15-25 parts of fly ash, 10-20 parts of gypsum powder, 5-10 parts of silica micro powder, 15-30 parts of lime, 120-200 parts of water and 5-15 parts of initial setting slurry.
Preferably, the air-entraining aluminum powder comprises 18% of air entraining agent, 18% of foam stabilizer, 12% of water reducing agent and the balance aluminum powder.
Preferably, the mesh number of the lime is 40-150 meshes.
Preferably, in step f, cement slurry is sprayed on six faces of the block.
Preferably, in the step f, the weight ratio of the cement to the water is 0.5-1: 1.
the invention has the beneficial effects that: according to the invention, through improvement of the raw materials, the silica micropowder and the initial setting slurry are added into the raw materials, the dissolution of silica can be accelerated in the early stage, hydration products can be generated as soon as possible, hydration product crystals such as calcium silicate hydrate in the initial setting slurry can be used as crystal nuclei to grow rapidly to form a crystallization mechanism, both the crystal nuclei and the crystallization mechanism are favorable for shortening the autoclaved curing time, so that the production efficiency is improved, the cement slurry is sprayed on the surface of the aerated brick, the cement slurry is combined with the aerated brick at the surface, a surface layer with higher strength and difficult powder generation is formed, and the surface layer is easy to bond with mortar when a wall is built.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited thereto.
The production method of the aerated brick with the cement paste film, which can be rapidly produced, is characterized by comprising the following steps: the method comprises the following steps: a. the method comprises the following steps of mixing and stirring portland cement, fly ash, gypsum powder, silica micropowder, lime, water and slurry which is initially set in the last production according to a certain proportion to obtain slurry, wherein the initially set slurry refers to a product which is generated by gas generation and initial setting of the slurry in the last production in an initial curing chamber, is not yet set, contains a hydration product obtained by hydration reaction, and can promote the hydration reaction by stirring and mixing the hydration product into the slurry. b. And (3) maintaining the temperature of the slurry at 45-55 ℃, adding the air-entraining aluminum powder, stirring for 1 minute, and pouring the slurry into an air-entraining brick mold frame, wherein the air-entraining aluminum powder can be the existing air-entraining aluminum powder, and can also be prepared according to the proportion of 18% of air-entraining agent, 18% of foam stabilizer, 12% of water reducing agent and the balance of aluminum powder. c. And (3) sending the die frame and the slurry inside the die frame into a primary curing chamber for gas generation and primary setting, wherein the temperature of the primary curing chamber is 50-60 ℃, the primary curing time is 2 hours, and the slurry is solidified into a blank. d. And separating the green body from the die frame, and cutting the green body to obtain the brick. e. And (3) conveying the bricks to an autoclave for autoclave curing, wherein the pressure is 1.2-1.8 Mpa, the temperature is 100-120 ℃, and the autoclave time is 2 hours. f. Mixing cement and water to prepare cement paste, spraying the cement paste on the inner side and the outer side of the brick, and then continuing to perform autoclaved curing for 1 hour, wherein the sprayed autoclaved curing is used for continuing the hydration reaction in the aerated brick on one hand and removing the water in the cement paste on the other hand. g. And stacking the bricks outdoors, and naturally curing for more than 10 days to obtain the finished aerated brick.
Further, the Portland cement, the fly ash, the gypsum powder, the silica micropowder, the lime, the water and the initially-set slurry comprise the following components in parts by weight: 30-40 parts of Portland cement, 15-25 parts of fly ash, 10-20 parts of gypsum powder, 5-10 parts of silica micro powder, 15-30 parts of lime, 120-200 parts of water and 5-15 parts of initial setting slurry.
The mesh number of the lime is 40-150 meshes.
Further, in step f, not only the inner side and the outer side of the brick but also cement paste may be sprayed on the six faces of the brick.
Further, in the step f, the weight ratio of the cement to the water is 0.5-1: 1.
the portland cement of the present invention contains: CaO, SiO2、Fe2O3、Al2O3Etc. the fly ash contains SiO2、Al2O3CaO, etc., the main component of gypsum powder is CaSO4The fine silica powder is very small powdery SiO2Can accelerate SiO2Ca (OH) dissolved and formed2The reaction generates hydrate, the initial setting slurry contains crystals such as calcium silicate hydrate and the like, so that the crystals can be used as crystal nuclei to grow rapidly to form crystal junctions during gas initial settingThe edge serving as the aggregate is bonded with the aggregate, so that the production efficiency is greatly improved, the time of an autoclaved curing link is favorably shortened, and the production cost is reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. A production method of an aerated brick with a cement paste film, which can be rapidly produced, is characterized in that: the method comprises the following steps:
a. mixing and stirring portland cement, fly ash, gypsum powder, silica micro powder, lime, water and the slurry initially set in the last production according to a certain proportion to obtain slurry;
b. keeping the temperature of the slurry at 45-55 ℃, adding air-entrapping aluminum powder, stirring for 1 minute, and pouring the slurry into an air-entrapping brick mold frame;
c. sending the mold frame and the slurry inside the mold frame into a primary curing chamber for gas generation and primary setting, wherein the temperature of the primary curing chamber is 50-60 ℃, the primary curing time is 2 hours, and the slurry is solidified into a blank;
d. separating the green body from the mold frame, and cutting the green body to obtain a brick block;
e. conveying the bricks to an autoclave for autoclave curing, wherein the pressure is 1.2-1.8 Mpa, the temperature is 100-120 ℃, and the autoclave time is 2 hours;
f. mixing cement and water to prepare cement paste, spraying the cement paste on the inner side and the outer side of the brick, and then continuing to perform autoclaved curing for 1 hour;
g. and stacking the bricks outdoors, and naturally curing for more than 10 days to obtain the finished aerated brick.
2. The method for producing the aerated brick with the cement film, which can be rapidly produced, according to claim 1, is characterized in that: the Portland cement, the fly ash, the gypsum powder, the silica micro powder, the lime, the water and the initially-set slurry comprise the following components in parts by weight: 30-40 parts of Portland cement, 15-25 parts of fly ash, 10-20 parts of gypsum powder, 5-10 parts of silica micro powder, 15-30 parts of lime, 120-200 parts of water and 5-15 parts of initial setting slurry.
3. The method for producing the aerated brick with the cement film, which can be rapidly produced, according to claim 1, is characterized in that: the air-entraining aluminum powder comprises 18% of air entraining agent, 18% of foam stabilizer, 12% of water reducing agent and the balance aluminum powder.
4. The method for producing the aerated brick with the cement film, which can be rapidly produced, according to claim 1, is characterized in that: the mesh number of the lime is 40-150 meshes.
5. The method for producing the aerated brick with the cement film, which can be rapidly produced, according to claim 1, is characterized in that: and f, spraying cement paste on six surfaces of the brick.
6. The method for producing the aerated brick with the cement film, which can be rapidly produced, according to claim 1, is characterized in that: in the step f, the weight ratio of cement to water is 0.5-1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182793.8A CN111039638A (en) | 2018-10-11 | 2018-10-11 | Production method of aerated brick with cement paste film capable of being rapidly produced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182793.8A CN111039638A (en) | 2018-10-11 | 2018-10-11 | Production method of aerated brick with cement paste film capable of being rapidly produced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111039638A true CN111039638A (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811182793.8A Withdrawn CN111039638A (en) | 2018-10-11 | 2018-10-11 | Production method of aerated brick with cement paste film capable of being rapidly produced |
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| CN (1) | CN111039638A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340326A (en) * | 2022-07-06 | 2022-11-15 | 宿州市焜燿环保建材有限公司 | Environment-friendly ceramic tile glue and production method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789598A (en) * | 2004-12-16 | 2006-06-21 | 邱则有 | Light reinforced concrete board |
| KR100809804B1 (en) * | 2006-09-28 | 2008-03-04 | 한국전력공사 | Light foam concrete composition using bottom ash, used for sound absorbtion materials, light foam concrete product employing the same and the manufacturing method thereof |
| CN102167619A (en) * | 2011-01-25 | 2011-08-31 | 河海大学 | Low-thermal-conductivity aerated concrete and preparation method thereof |
| CN104557107A (en) * | 2014-12-16 | 2015-04-29 | 山东益丰生化环保股份有限公司盛源新型建材分公司 | Light-weight autoclaved aerated concrete and preparation process thereof |
| CN105777006A (en) * | 2016-03-14 | 2016-07-20 | 同济大学 | Non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as exciting agent, and preparation method of non-steam autoclaved high performance concrete tube pile |
| 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 |
-
2018
- 2018-10-11 CN CN201811182793.8A patent/CN111039638A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789598A (en) * | 2004-12-16 | 2006-06-21 | 邱则有 | Light reinforced concrete board |
| KR100809804B1 (en) * | 2006-09-28 | 2008-03-04 | 한국전력공사 | Light foam concrete composition using bottom ash, used for sound absorbtion materials, light foam concrete product employing the same and the manufacturing method thereof |
| CN102167619A (en) * | 2011-01-25 | 2011-08-31 | 河海大学 | Low-thermal-conductivity aerated concrete and preparation method thereof |
| CN104557107A (en) * | 2014-12-16 | 2015-04-29 | 山东益丰生化环保股份有限公司盛源新型建材分公司 | Light-weight autoclaved aerated concrete and preparation process thereof |
| CN105777006A (en) * | 2016-03-14 | 2016-07-20 | 同济大学 | Non-steam autoclaved high performance concrete tube pile using calcium silicate hydrate seed powder as exciting agent, and preparation method of non-steam autoclaved high performance concrete tube pile |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340326A (en) * | 2022-07-06 | 2022-11-15 | 宿州市焜燿环保建材有限公司 | Environment-friendly ceramic tile glue and production method thereof |
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Application publication date: 20200421 |