CN111138153A - Improved process for air hole structure of aerated concrete block - Google Patents
Improved process for air hole structure of aerated concrete block Download PDFInfo
- Publication number
- CN111138153A CN111138153A CN202010012169.4A CN202010012169A CN111138153A CN 111138153 A CN111138153 A CN 111138153A CN 202010012169 A CN202010012169 A CN 202010012169A CN 111138153 A CN111138153 A CN 111138153A
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- China
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- parts
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- autoclave
- aerated concrete
- concrete block
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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
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an aerated concrete block pore structure improvement process which comprises the steps of mixing 40-60 parts of ore material, 15-20 parts of calcareous material, 2-5 parts of aluminum powder, 3-7 parts of gypsum, 5-10 parts of acrylate emulsion, 2-5 parts of foaming agent, 6-10 parts of rubber powder, 2-6 parts of sodium hydroxide, 3-7 parts of active mineral admixture, 2-4 parts of silane coupling agent, 2-5 parts of talcum powder and 1-3 parts of water reducing agent raw material through a mixer, adding water and uniformly stirring, allowing slurry to stand for 2-3 hours in an environment of 40-45 ℃ to form a blank, performing steam pressing, vacuumizing through a vacuum pump to form negative pressure of 0.6-0.9 MPa and 110-115 ℃, performing steam curing for 6-16 hours, boosting to 1-1.3 MPa and 3-6 hours, allowing the pressure of a steam pressing kettle to decrease to 40-50 ℃, and keeping the temperature for 2-3 hours. The building block prepared by the invention has the advantages of uniform pore distribution, obviously improved pore structure, reduced hole crossing, high strength and good heat insulation performance.
Description
The technical field is as follows:
the invention relates to the technical field of aerated concrete processing, in particular to an improved process for an aerated concrete block air hole structure.
Background art:
with the development of science and technology, the wall material industry in China has gone on the way of multi-variety and multi-function development, wall material systems mainly comprising bricks, blocks and plates, such as concrete hollow blocks, paper-faced gypsum boards, fiber cement sandwich boards and the like, are preliminarily formed, but the proportion of various light boards and composite boards representing the modern level of wall materials is still very small and is less than 3% of the total amount of the whole wall materials, and the development of the building industry is restricted.
The aerated concrete block is a light porous silicate product prepared by taking siliceous materials (sand, fly ash, siliceous tailings and the like) and calcareous materials (lime, cement) as main raw materials, adding a gas former (aluminum powder) and carrying out the technical processes of proportioning, stirring, pouring, pre-curing, cutting, autoclaving, curing and the like.
The invention content is as follows:
the invention provides an improved process for an air hole structure of an aerated concrete block, which solves the problems of uneven distribution and overlarge air holes in the prior art.
The technical solution of the invention is as follows: an improved process for an air hole structure of an aerated concrete block comprises the following steps:
step a, mixing 40-60 parts of ore material, 15-20 parts of calcareous material, 2-5 parts of aluminum powder, 3-7 parts of gypsum, 5-10 parts of acrylate emulsion, 2-5 parts of foaming agent, 6-10 parts of rubber powder, 2-6 parts of sodium hydroxide, 3-7 parts of active mineral admixture, 2-4 parts of silane coupling agent, 2-5 parts of talcum powder and 1-3 parts of water reducer through a mixer;
b, adding 1: 0.6-0.7 of water into the raw materials and uniformly stirring;
c, pouring the slurry into a mold, conveying the mold to a static curing room, and standing the slurry for 2-3 hours at 40-45 ℃ to form a blank;
d, cutting the blank to the required size specification of the building block;
e, conveying the building block blank into an autoclave for autoclaving, vacuumizing by using a vacuum pump to form a negative pressure of 0.6-0.9 MPa in the autoclave, keeping the temperature in the autoclave at 110-115 ℃, carrying out steam curing for 6-16 hours, and then boosting the pressure to 1-1.3 MPa and keeping the pressure constant for 3-6 hours;
and f, decompressing the autoclave, reducing the temperature of the autoclave to 40-50 ℃, and preserving the heat for 2-3 hours.
Preferably, the mineral sand material in the step a comprises sand, fly ash and calcium silicate, wherein the sand accounts for 15-20%, the fly ash accounts for 70-75% and the calcium silicate accounts for 5-10%.
Preferably, the calcareous material in the step a comprises 15-30% of cement and quicklime, and the lime accounts for 70-80% of the total weight of the calcareous material.
Preferably, the water reducing agent in step a is a polycarboxylic acid water reducing agent.
The invention has the beneficial effects that: the aerated concrete block prepared by the invention has uniform air hole distribution, obviously improves the air hole structure, reduces the hole string, reduces the average aperture and the average spacing coefficient of the air holes, and increases the structural strength and the compressive strength of the block.
The specific implementation mode is as follows:
the improved process of the air hole structure of the aerated concrete block is further explained by combining the embodiment.
Example 1
An improved process for an air hole structure of an aerated concrete block comprises the following steps:
step a, mixing 50 parts of ore material, 15 parts of calcareous material, 5 parts of aluminum powder, 5 parts of gypsum, 8 parts of acrylate emulsion, 5 parts of foaming agent, 8 parts of rubber powder, 5 parts of sodium hydroxide, 4 parts of active mineral admixture, 4 parts of silane coupling agent, 3 parts of talcum powder and 2 parts of water reducing agent raw materials by a stirrer;
step b, adding 1:0.65 of water into the raw materials and uniformly stirring;
c, pouring the slurry into a mold, conveying the mold to a static curing room, and standing the slurry for 3 hours at the temperature of 40 ℃ to form a blank;
d, cutting the blank to the required size specification of the building block;
e, conveying the building block blank into an autoclave for autoclaving, vacuumizing by using a vacuum pump to form a negative pressure of 0.6MPa in the autoclave, keeping the temperature in the autoclave at 115 ℃, carrying out steam curing for 12 hours, and then boosting the pressure to 1.2MPa, and keeping the pressure constant for 5 hours;
and f, decompressing the autoclave, reducing the temperature of the autoclave to 45 ℃, and preserving the heat for 2 hours.
Further, the ore material in the step a comprises 20% of sand, 75% of fly ash and 5% of calcium silicate.
Further, the calcareous material in the step a comprises 20% of cement and 80% of lime in the total weight of the calcareous material.
Further, the water reducing agent in the step a is a polycarboxylic acid water reducing agent.
Example 2
An improved process for an air hole structure of an aerated concrete block comprises the following steps:
step a, mixing 60 parts of ore material, 20 parts of calcareous material, 2 parts of aluminum powder, 7 parts of gypsum, 10 parts of acrylate emulsion, 5 parts of foaming agent, 6 parts of rubber powder, 6 parts of sodium hydroxide, 7 parts of active mineral admixture, 4 parts of silane coupling agent, 5 parts of talcum powder and 3 parts of water reducing agent raw materials by a stirrer;
step b, adding 1:0.7 of water into the raw materials and uniformly stirring;
c, pouring the slurry into a mold, conveying the mold to a static curing room, and standing the slurry for 3 hours at the temperature of 45 ℃ to form a blank;
d, cutting the blank to the required size specification of the building block;
e, conveying the building block blank into an autoclave for autoclaving, vacuumizing by using a vacuum pump to form a negative pressure of 0.9MPa in the autoclave, keeping the temperature in the autoclave at 115 ℃, carrying out steam curing for 16 hours, and then boosting the pressure to 1.3MPa and keeping the pressure constant for 6 hours;
and f, decompressing the autoclave, reducing the temperature of the autoclave to 40 ℃, and preserving the heat for 3 hours.
Further, the ore material in the step a comprises 20% of sand, 70% of fly ash and 10% of calcium silicate.
Further, the calcareous material in the step a comprises 25% of cement and quicklime, wherein the lime accounts for 75% of the total weight of the calcareous material.
Further, the water reducing agent in the step a is a polycarboxylic acid water reducing agent.
Example 3
An improved process for an air hole structure of an aerated concrete block comprises the following steps:
step a, mixing 40 parts of ore material, 15 parts of calcareous material, 3 parts of aluminum powder, 4 parts of gypsum, 5 parts of acrylate emulsion, 2 parts of foaming agent, 6 parts of rubber powder, 3 parts of sodium hydroxide, 3 parts of active mineral admixture, 2 parts of silane coupling agent, 2 parts of talcum powder and 2 parts of water reducing agent raw materials by a stirrer;
step b, adding 1:0.6 of water into the raw materials and uniformly stirring;
c, pouring the slurry into a mold, conveying the mold to a static curing room, and standing the slurry for 2 hours at the temperature of 40 ℃ to form a blank;
d, cutting the blank to the required size specification of the building block;
e, conveying the building block blank into an autoclave for autoclaving, vacuumizing by using a vacuum pump to ensure that negative pressure of 0.65MPa is formed in the autoclave, keeping the temperature in the autoclave at 112 ℃, carrying out steam curing for 10 hours, and then boosting the pressure to 1.2MPa and keeping the pressure constant for 4 hours;
and f, decompressing the autoclave, reducing the temperature of the autoclave to 40 ℃, and preserving the heat for 2 hours.
Further, the ore material in the step a comprises sand, fly ash and calcium silicate, wherein the sand accounts for 15%, the fly ash accounts for 75% and the calcium silicate accounts for 10%.
Further, the calcareous material in the step a comprises cement and quicklime, wherein the cement accounts for 30%, and the lime accounts for 70% of the total weight of the calcareous material.
Further, the water reducing agent in the step a is a polycarboxylic acid water reducing agent.
The following characteristic parameters of the aerated concrete block performance and the air hole structure of each embodiment
As can be seen from the above table, the aerated concrete block of example 1 has the highest compressive strength, the smallest average pore size, and the smallest total porosity as the best example.
The above description is only a preferred embodiment of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work shall fall within the scope of the present invention.
Claims (4)
1. An improved process for an air hole structure of an aerated concrete block is characterized by comprising the following steps:
step a, mixing 40-60 parts of ore material, 15-20 parts of calcareous material, 2-5 parts of aluminum powder, 3-7 parts of gypsum, 5-10 parts of acrylate emulsion, 2-5 parts of foaming agent, 6-10 parts of rubber powder, 2-6 parts of sodium hydroxide, 3-7 parts of active mineral admixture, 2-4 parts of silane coupling agent, 2-5 parts of talcum powder and 1-3 parts of water reducer through a mixer;
b, adding 1: 0.6-0.7 of water into the raw materials and uniformly stirring;
c, pouring the slurry into a mold, conveying the mold to a static curing room, and standing the slurry for 2-3 hours at 40-45 ℃ to form a blank;
d, cutting the blank to the required size specification of the building block;
e, conveying the building block blank into an autoclave for autoclaving, vacuumizing by using a vacuum pump to form a negative pressure of 0.6-0.9 MPa in the autoclave, keeping the temperature in the autoclave at 110-115 ℃, carrying out steam curing for 6-16 hours, and then boosting the pressure to 1-1.3 MPa and keeping the pressure constant for 3-6 hours;
and f, decompressing the autoclave, reducing the temperature of the autoclave to 40-50 ℃, and preserving the heat for 2-3 hours.
2. The improved process of the air hole structure of the aerated concrete block according to claim 1, which is characterized in that: the mineral sand material in the step a comprises sand and stone, fly ash and calcium silicate, wherein the sand and stone accounts for 15-20%, the fly ash accounts for 70-75%, and the calcium silicate accounts for 5-10%.
3. The improved process of the air hole structure of the aerated concrete block according to claim 1, which is characterized in that: the calcareous material in the step a comprises 15-30% of cement and quicklime, wherein the lime accounts for 70-80% of the total weight of the calcareous material.
4. The improved process of the air hole structure of the aerated concrete block according to claim 1, which is characterized in that: the water reducing agent in the step a is a polycarboxylic acid water reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012169.4A CN111138153A (en) | 2020-01-07 | 2020-01-07 | Improved process for air hole structure of aerated concrete block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012169.4A CN111138153A (en) | 2020-01-07 | 2020-01-07 | Improved process for air hole structure of aerated concrete block |
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| Publication Number | Publication Date |
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| CN111138153A true CN111138153A (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010012169.4A Pending CN111138153A (en) | 2020-01-07 | 2020-01-07 | Improved process for air hole structure of aerated concrete block |
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| CN (1) | CN111138153A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113149552A (en) * | 2021-04-15 | 2021-07-23 | 王逵 | Polypropylene fiber concrete and production process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6015105A (en) * | 1983-07-07 | 1985-01-25 | 旭化成株式会社 | Manufacture of light aerated concrete block |
| CN104016701A (en) * | 2014-05-23 | 2014-09-03 | 安庆市金鹰新型建材科技股份有限公司 | Powder ash air-entrained concrete building block and production method thereof |
| CN105439618A (en) * | 2015-12-08 | 2016-03-30 | 蔡卓丽 | Autoclaved aerated concrete building block |
| CN107285801A (en) * | 2017-06-14 | 2017-10-24 | 江苏博拓新型建筑材料有限公司 | A kind of air-entrained concrete building block and its manufacture method |
-
2020
- 2020-01-07 CN CN202010012169.4A patent/CN111138153A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6015105A (en) * | 1983-07-07 | 1985-01-25 | 旭化成株式会社 | Manufacture of light aerated concrete block |
| CN104016701A (en) * | 2014-05-23 | 2014-09-03 | 安庆市金鹰新型建材科技股份有限公司 | Powder ash air-entrained concrete building block and production method thereof |
| CN105439618A (en) * | 2015-12-08 | 2016-03-30 | 蔡卓丽 | Autoclaved aerated concrete building block |
| CN107285801A (en) * | 2017-06-14 | 2017-10-24 | 江苏博拓新型建筑材料有限公司 | A kind of air-entrained concrete building block and its manufacture method |
Non-Patent Citations (2)
| Title |
|---|
| 谭平等: "《建筑材料》", 30 April 2019, 北京理工大学出版社 * |
| 高连玉等: "《蒸压加气混凝土建筑制品生产及应用》", 31 August 2015, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113149552A (en) * | 2021-04-15 | 2021-07-23 | 王逵 | Polypropylene fiber concrete and production process thereof |
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Application publication date: 20200512 |