CN104692754A - Autoclaved aerated concrete block - Google Patents
Autoclaved aerated concrete block Download PDFInfo
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- CN104692754A CN104692754A CN201310667457.3A CN201310667457A CN104692754A CN 104692754 A CN104692754 A CN 104692754A CN 201310667457 A CN201310667457 A CN 201310667457A CN 104692754 A CN104692754 A CN 104692754A
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- aerated concrete
- silica sand
- concrete block
- sand
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Abstract
The invention discloses an autoclaved aerated concrete block, belonging to the technical field of building materials. The block comprises the following raw materials in parts by weight: 90-110 parts of cement, 30-50 parts of silica sand, 60-80 parts of lime, 15-30 parts of desulfurized gypsum, 0.5-0.7 part of aluminum powder, 1.5-2.5 parts of sodium carbonate and 380-420 parts of water, wherein, silicon dioxide in the silica sand is 80-85wt%, and the fineness of the silica sand is 100-200 meshes. The block has high strength and excellent anti-freezing performance at the same time, the freeze-thawing times of the block reach 50 times, the strength level reaches A5.0, and wastes are effectively utilized in the production process.
Description
Technical field
The present invention relates to building material technical field, be specifically related to a kind of sand aerated concrete block.
Background technology
Sand aerated concrete block (sand aerated concrete building block) is for main raw material with siliceous material (sand) and calcareous material (lime, cement), admixture foaming agent (aluminium powder), the light porous silicate product made by technological processs such as batching, stirring, cast, precuring, cutting, steam pressure, maintenances.Because it contains pore even and tiny in a large number after getting angry, therefore named gas concrete.
Producing the principle of Aerated Concrete is by calcium and siliceous aggregate surface, chemical reaction occurs to generate hydro-thermal silicate CSH(B) and tobermorite crystallization etc. by cementing to " aggregate remains ", and form an entirety together with the pore that aluminium powder reaction generates, with present hollow brick, clay brick is compared with Dinas brickes to be had from advantages such as heavy and light, heat insulating, fire-resistant, fire-retardant, sound insulations.But along with the raising required materials for wall, there is the building block of excellent anti-freezing property and high strength urgently to develop.
Summary of the invention
The object of the invention is to the weak point overcoming prior art existence, a kind of sand aerated concrete block is provided.This building block possesses extremely strong anti-freezing property and high strength, and achieves refuse in production process and effectively utilize.
Technical scheme of the present invention is:
A kind of sand aerated concrete block, count by weight, its starting material comprise following component:
Cement: 90-110 part;
Silica sand: 30-50 part;
Lime: 60-80 part;
Desulfurated plaster: 15-30 part;
Aluminium powder: 0.5-0.7 part;
Soda ash: 1.5-2.5 part;
Water: 380-420 part.
Wherein: described silica sand derives from the mine tailing of placer, described silica sand comprises silicon-dioxide, ferric oxide and aluminium sesquioxide, wherein: silicon-dioxide 80-85wt%, and ferric oxide 0.4-0.8wt%, aluminium sesquioxide 4-7wt%.
The fineness of described silica sand is 100-200 order.
In described lime, the weight content of CaO is the weight content of 50-65wt%, MgO is 3-5wt%.
Above-mentioned starting material are adopted to prepare the process of sand aerated concrete block as follows:
(1) described starting material are mixed in required ratio, make slip;
(2) slip is added cast stirrer to stir, the slip after stirring carries out being poured in mould;
(3) mould is quiet stops, and then cuts, and the bad body of well cutting carries out steam press maintenance and obtains finished product in autoclave.
The principle of the invention is as follows:
Sand aerated concrete block of the present invention (sand aerated concrete building block) adopts starting material to be silica sand, cement, lime, desulfurated plaster, soda ash, aluminium powder etc.The present invention's silica sand used is unique place of production in the whole nation, the sand aerated-block that other area the produces institute siliceous composition in the siliceous place of production with us difference.In the present invention, silica sand derives from the mine tailing of placer, and in its silica sand, dioxide-containing silica is greater than 80wt%, while meeting the requirement of building block high-intensity performance, can also accomplish utilization of waste material.
While making institute's building block product possess high intensity by optimization raw material types, the fineness of silica sand used and the denseness of slip in sand aerated concrete block of the present invention, also there is excellent anti-freezing property.When adopting suitable silica sand, silica sand consumption is many, building block product strength increases, but when silica sand is in the scope of the invention, product strength is high, but under gas concrete quiet stops just supporting condition, bad body setting rate will be difficult to the needs meeting production technique, and pouring stability also can be deteriorated.This adds soda ash in the feed, and building block raw material is formed after slip, and silica sand is under jointly the exciting of cement, desulfurated plaster and soda ash, and its hydration reaction is strong, thus becomes the important factor of bad body sclerosis.Silica sand and soda ash and aluminium powder are under the specific proportioning of the present invention, and silica sand activity in hydration process is higher, and in the sclerosis of bad body, effect obviously, and pouring stability improves.
The sand aerated concrete block that the present invention produces meets national standard, and product is applicable to multilayer, high-rise frame infilled wall, and the bearing wall being also applicable to the house of less than five layers uses.
Compared with prior art, tool of the present invention has the following advantages:
1, the present invention's silica sand used derives from the mine tailing of placer, and its dioxide-containing silica is high, and it matches with the silica sand fineness through optimizing and slurry consistency, prepares the building block product simultaneously possessing high strength and excellent anti-freezing property.This building block number of freezing and thawing reaches 50 times, and strength grade reaches A5.0.
2, the present invention's silica sand used derives from the mine tailing of placer, low in raw material price, and can realize utilization of waste material.
Embodiment
Below in conjunction with embodiment, the invention will be further described, and what be necessary to herein means out is that following examples are only used to further illustrate the present invention, and can not be interpreted as limiting the scope of the invention.
In following examples, described silica sand derives from the mine tailing of placer, and described silica sand comprises silicon-dioxide, ferric oxide and aluminium sesquioxide, wherein: silicon-dioxide 85wt%, and ferric oxide 0.6wt%, aluminium sesquioxide 6wt%.
The fineness of silica sand used is 100-200 order.
In described lime, the weight content of CaO is the weight content of 60wt%, MgO is 4wt%.
Embodiment 1
1, the preparation of sand aerated concrete block
(1) starting material are mixed in required ratio, make slip; Count by weight, starting material comprise following component:
Cement: 100 parts;
Silica sand: 30 parts;
Lime: 70 parts;
Desulfurated plaster: 20 parts;
Aluminium powder: 0.5 part;
Soda ash: 1.8 parts;
Water: 410 parts.
(2) slip is added cast stirrer to stir, the slip after stirring carries out being poured in mould;
(3) mould is quiet stops, and then cuts, and the bad body of well cutting carries out steam press maintenance and obtains building block product in autoclave.
This building block number of freezing and thawing reaches 50 times, and strength grade reaches A5.0.
Embodiment 2
1, the preparation of sand aerated concrete block
(1) starting material are mixed in required ratio, make slip; Count by weight, starting material comprise following component:
Cement: 100 parts;
Silica sand: 45 parts;
Lime: 70 parts;
Desulfurated plaster: 25 parts;
Aluminium powder: 0.5 part;
Soda ash: 2.0 parts;
Water: 400 parts.
(2) slip is added cast stirrer to stir, the slip after stirring carries out being poured in mould;
(3) mould is quiet stops, and then cuts, and the bad body of well cutting carries out steam press maintenance and obtains building block product in autoclave.
This building block number of freezing and thawing reaches 50 times, and strength grade reaches A5.0.
Claims (5)
1. a sand aerated concrete block, is characterized in that: count by weight, and these building block starting material comprise following component:
Cement: 90-110 part;
Silica sand: 30-50 part;
Lime: 60-80 part;
Desulfurated plaster: 15-30 part;
Aluminium powder: 0.5-0.7 part;
Soda ash: 1.5-2.5 part;
Water: 380-420 part.
2. sand aerated concrete block according to claim 1, is characterized in that: described silica sand derives from the mine tailing of placer.
3. sand aerated concrete block according to claim 1, is characterized in that: described silica sand comprises silicon-dioxide, ferric oxide and aluminium sesquioxide, wherein: silicon-dioxide 80-85wt%, and ferric oxide 0.4-0.8wt%, aluminium sesquioxide 4-7wt%.
4. sand aerated concrete block according to claim 1, is characterized in that: the fineness of described silica sand is 100-200 order.
5. sand aerated concrete block according to claim 1, is characterized in that: in described lime, the weight content of CaO is the weight content of 50-65wt%, MgO is 3-5wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667457.3A CN104692754A (en) | 2013-12-10 | 2013-12-10 | Autoclaved aerated concrete block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310667457.3A CN104692754A (en) | 2013-12-10 | 2013-12-10 | Autoclaved aerated concrete block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104692754A true CN104692754A (en) | 2015-06-10 |
Family
ID=53340358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310667457.3A Pending CN104692754A (en) | 2013-12-10 | 2013-12-10 | Autoclaved aerated concrete block |
Country Status (1)
| Country | Link |
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| CN (1) | CN104692754A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113652925A (en) * | 2021-08-19 | 2021-11-16 | 河北建筑工程学院 | Iron tailing concrete test piece for ski-run environmental management and construction method |
| CN117209242A (en) * | 2023-09-18 | 2023-12-12 | 武汉鑫祥旺实业有限责任公司 | Short-curing high-durability autoclaved aerated concrete and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29709267U1 (en) * | 1997-05-27 | 1997-07-24 | Schneiderbauer Johann B Dipl A | Building material for the creation of riding arenas and other open spaces |
| CN1587160A (en) * | 2004-07-12 | 2005-03-02 | 陈坤忠 | Air-extraining concrete and producing method |
| CN101323513A (en) * | 2008-07-30 | 2008-12-17 | 上海伊通有限公司 | Sand aerated concrete impervious building blocks |
| CN101913903A (en) * | 2010-08-04 | 2010-12-15 | 舟山市宇锦新型墙体材料有限公司 | Aerated concrete block and preparation method thereof |
| CN103193431A (en) * | 2012-09-03 | 2013-07-10 | 上海舟润实业有限公司 | Quartz tailing autoclaved aerated concrete building block and preparation method thereof |
-
2013
- 2013-12-10 CN CN201310667457.3A patent/CN104692754A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29709267U1 (en) * | 1997-05-27 | 1997-07-24 | Schneiderbauer Johann B Dipl A | Building material for the creation of riding arenas and other open spaces |
| CN1587160A (en) * | 2004-07-12 | 2005-03-02 | 陈坤忠 | Air-extraining concrete and producing method |
| CN101323513A (en) * | 2008-07-30 | 2008-12-17 | 上海伊通有限公司 | Sand aerated concrete impervious building blocks |
| CN101913903A (en) * | 2010-08-04 | 2010-12-15 | 舟山市宇锦新型墙体材料有限公司 | Aerated concrete block and preparation method thereof |
| CN103193431A (en) * | 2012-09-03 | 2013-07-10 | 上海舟润实业有限公司 | Quartz tailing autoclaved aerated concrete building block and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113652925A (en) * | 2021-08-19 | 2021-11-16 | 河北建筑工程学院 | Iron tailing concrete test piece for ski-run environmental management and construction method |
| CN117209242A (en) * | 2023-09-18 | 2023-12-12 | 武汉鑫祥旺实业有限责任公司 | Short-curing high-durability autoclaved aerated concrete and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150610 |
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| RJ01 | Rejection of invention patent application after publication |