CN103739305A - Aerated concrete block, preparation method thereof and application of fly ash to aerated concrete block - Google Patents
Aerated concrete block, preparation method thereof and application of fly ash to aerated concrete block Download PDFInfo
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- CN103739305A CN103739305A CN201310685825.7A CN201310685825A CN103739305A CN 103739305 A CN103739305 A CN 103739305A CN 201310685825 A CN201310685825 A CN 201310685825A CN 103739305 A CN103739305 A CN 103739305A
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- building block
- air
- concrete building
- entrained concrete
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The invention discloses a preparation method of an aerated concrete block and the aerated concrete block prepared by employing the above preparation method, and specifically the aerated concrete block is prepared by adding proper amount of basic substances into fly ash and performing high-pressure steaming and curing. The beneficial effects comprise that by fully utilizing the component composition and the chemical characteristics of fly ash, fly ash is furthest fully converted into tobermorite in the chemical reaction, the strength and the density of the block product are substantially improved and the product performances are improved; the product qualified rate is substantially improved and can reach 98.5% or more, while the industrial average qualified rate is about 75%; and the comprehensive utilization rate of fly ash especially poor-quality fly ash is substantially improved, the fly ash doping amount can reach 75% or more in the above technical scheme while the fly ash doping amount in domestic industrial technology is about 60%.
Description
Technical field
The present invention relates to the application therein of air-entrained concrete building block, its preparation method and flyash.
Background technology
Flyash is one of solid trade waste that the current discharge capacity of China is larger, and along with the development of power industry, the flyash quantity discharged of coal-burning power plant increases year by year.A large amount of flyash discharge and accumulation, occupy cultivated land, and also brings a series of environment and resource problem.
After deliberation, flyash is by suitable technical finesse, can regeneration, become useful resource, and can solve environmental problem, can increase again economic benefit.For reducing destruction to land resources, clay brick goods are progressively being reduced use, form thus huge building materials market blank, need to have environmental protection, energy-conservation, the useless novel wall material of profit is filled up.
Summary of the invention
Object of the present invention is exactly for above-mentioned defect of the prior art, provides a kind of flyash that can effectively solve industrial production generation to discharge the environmental problem of bringing, and can substitute again the preparation method of the air-entrained concrete building block of existing clay brick goods simultaneously.
To achieve these goals, technical scheme provided by the invention is: a kind of preparation method of air-entrained concrete building block is in flyash, to add appropriate alkaline matter, then to prepare after high-pressure steaming and cultivating; In described flyash, Fe
2o
3content be 1.51～3.67%, SiO
2and Al
2o
3total content be SiO
2+ Al
2o
3the content of=67.22～73.87%, CaO is 2.1～3.18%, SO
3be and be less than 2% with MgO content.
Further, the preparation method of above-mentioned a kind of air-entrained concrete building block, described alkaline matter is calcium hydroxide.
Further, the preparation method of above-mentioned a kind of air-entrained concrete building block, the raw materials of described air-entrained concrete building block is counted flyash 50-65 part according to weight part, lime 22-38 part, gypsum 18-20 part, aluminium powder 16-19 part, water 60-75 part.
Further, the preparation method of above-mentioned a kind of air-entrained concrete building block, comprises the following steps:
1) raw material disposal: get raw material according to said ratio, flyash is delivered to after ball mill is levigate to slurry tank and stored; Lime is sent into ball mill after jaw crusher carries out fragmentation, send in powder batch bin after levigate; Gypsum is made to the solution that mass percentage concentration is 30-36%, send in storage tank and store; Aluminium powder is added to water stirring and make aluminium powder suspension;
2) casting: each material that step 1) is obtained is placed in stirrer, and adds appropriate mixing water, by die casting, then sends into and just supports the storehouse initial set of getting angry after mixing, and cuts into adobe after just forming type, obtains cutting aftershaping adobe;
3) steam-cured: by step 2) the cutting aftershaping adobe that obtains is placed in autoclave, and under 1.24 MPa saturation steams, maintenance goes out still for 12 hours, obtains air-entrained concrete building block.
Further, the preparation method of above-mentioned a kind of air-entrained concrete building block, in described step 1), the blending ratio of aluminium powder and water is 3:5 by weight.
Further, the preparation method of above-mentioned a kind of air-entrained concrete building block, described step 2) in, the add-on of mixing water is 5 times of material gross weights; Stirring velocity is 300rpm.
Air-entrained concrete building block prepared by the preparation method that second object of the present invention has been to provide above-mentioned a kind of air-entrained concrete building block, the calcium silicon of described air-entrained concrete building block is than being 4:5.
Further, air-entrained concrete building block prepared by the preparation method of above-mentioned a kind of air-entrained concrete building block, the ratio of water to material of described air-entrained concrete building block is (3:5)-(3:4).
Further, air-entrained concrete building block prepared by the preparation method of above-mentioned a kind of air-entrained concrete building block, the volume density of described air-entrained concrete building block is 500kg/m
3.
The 3rd object of the present invention has been to provide the application of flyash in the above-mentioned air-entrained concrete building block of preparation.
Beneficial effect of the present invention is: the preparation method of air-entrained concrete building block provided by the invention and the air-entrained concrete building block of preparation thereof, have following beneficial effect:
1, make full use of fine coal ash composition composition and chemical property, make it transforming fully and generating tobermorite as far as possible in chemical reaction, intensity and the density of building block product have greatly been improved, product performance have been improved, after testing, the quality index of product provided by the invention has reached strength grade more than MU10, freeze proof loss of strength rate < 2%, rate of weight loss < 1.7%, drying shrinkage value < 0.75mm/m;
2, greatly improved conforming product rate, preparation method provided by the invention, has solved proportioning problem, and the qualification rate of product can reach more than 98.5%, and industry average qualification rate only has 75% left and right;
3, greatly improved the particularly comprehensive utilization ratio of flyash inferior of flyash, the incorporation of the technology flyash of domestic industry is in 60% left and right, and in the present invention, fly-ash-containedly can reach more than 75% (flyash 45% inferior and low-carbon (LC) flyash 30%).
Embodiment
embodiment 1:
A preparation method for air-entrained concrete building block, the raw materials of air-entrained concrete building block is counted flyash 50-65 part according to weight part, lime 22-38 part, gypsum 18-20 part, aluminium powder 16-19 part, water 60-75 part.
Concrete grammar, comprises the following steps:
1) raw material disposal: get raw material according to proportioning, flyash is delivered to after ball mill is levigate to slurry tank and stored; Lime is sent into ball mill after jaw crusher carries out fragmentation, send in powder batch bin after levigate; Gypsum is made to the solution that mass percentage concentration is 30-36%, send in storage tank and store; Aluminium powder is added to water stirring and make aluminium powder suspension;
2) casting: each material that step 1) is obtained is placed in stirrer, and adds appropriate mixing water, by die casting, then sends into and just supports the storehouse initial set of getting angry after mixing, and cuts into adobe after just forming type, obtains cutting aftershaping adobe;
3) steam-cured: by step 2) the cutting aftershaping adobe that obtains is placed in autoclave, and under 1.24 MPa saturation steams, maintenance goes out still for 12 hours, obtains air-entrained concrete building block.
In above-mentioned flyash, Fe
2o
3content be 1.51～3.67%, SiO
2and Al
2o
3total content be SiO
2+ Al
2o
3the content of=67.22～73.87%, CaO is 2.1～3.18%, SO
3be and be less than 2% with MgO content; Alkaline matter is calcium hydroxide; In described step 1), the blending ratio of aluminium powder and water is 3:5; Described step 2) in, the add-on of mixing water is 5 times of material gross weights; Stirring velocity is 300rpm.
The calcium silicon of air-entrained concrete building block is than being 4:5.
The ratio of water to material of air-entrained concrete building block is (3:5)-(3:4).
The volume density of air-entrained concrete building block is 500kg/m
3.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a preparation method for air-entrained concrete building block, is characterized in that, be in flyash, to add appropriate alkaline matter, then to prepare after high-pressure steaming and cultivating; In described flyash, Fe
2o
3content be 1.51～3.67%, SiO
2and Al
2o
3total content be SiO
2+ Al
2o
3the content of=67.22～73.87%, CaO is 2.1～3.18%, SO
3be and be less than 2% with MgO content.
2. the preparation method of a kind of air-entrained concrete building block according to claim 1, is characterized in that, described alkaline matter is calcium hydroxide.
3. the preparation method of a kind of air-entrained concrete building block according to claim 2, is characterized in that, the raw materials of described air-entrained concrete building block is counted flyash 50-65 part according to weight part, lime 22-38 part, gypsum 18-20 part, aluminium powder 16-19 part, water 60-75 part.
4. the preparation method of a kind of air-entrained concrete building block according to claim 3, is characterized in that, comprises the following steps:
1) raw material disposal: proportioning is got raw material is according to claim 3 delivered to flyash slurry tank and is stored after ball mill is levigate; Lime is sent into ball mill after jaw crusher carries out fragmentation, send in powder batch bin after levigate; Gypsum is made to the solution that mass percentage concentration is 30-36%, send in storage tank and store; Aluminium powder is added to water stirring and make aluminium powder suspension;
2) casting: each material that step 1) is obtained is placed in stirrer, and adds appropriate mixing water, by die casting, then sends into and just supports the storehouse initial set of getting angry after mixing, and cuts into adobe after just forming type, obtains cutting aftershaping adobe;
3) steam-cured: by step 2) the cutting aftershaping adobe that obtains is placed in autoclave, and under 1.24 MPa saturation steams, maintenance goes out still for 12 hours, obtains air-entrained concrete building block.
5. the preparation method of a kind of air-entrained concrete building block according to claim 4, is characterized in that, in described step 1), the blending ratio of aluminium powder and water is 3:5 by weight.
6. the preparation method of a kind of air-entrained concrete building block according to claim 5, is characterized in that, described step 2) in, the add-on of mixing water is 5 times of material gross weights; Stirring velocity is 300rpm.
7. the air-entrained concrete building block of preparing according to the preparation method of the arbitrary described a kind of air-entrained concrete building block of claim 1-6, is characterized in that, the calcium silicon of described air-entrained concrete building block is than being 4:5.
8. air-entrained concrete building block according to claim 7, is characterized in that, the ratio of water to material of described air-entrained concrete building block is (3:5)-(3:4).
9. air-entrained concrete building block according to claim 8, is characterized in that, the volume density of described air-entrained concrete building block is 500kg/m
3.
10. flyash is in the application of preparing in air-entrained concrete building block as claimed in claim 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685825.7A CN103739305A (en) | 2013-12-16 | 2013-12-16 | Aerated concrete block, preparation method thereof and application of fly ash to aerated concrete block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685825.7A CN103739305A (en) | 2013-12-16 | 2013-12-16 | Aerated concrete block, preparation method thereof and application of fly ash to aerated concrete block |
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| CN103739305A true CN103739305A (en) | 2014-04-23 |
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| CN201310685825.7A Pending CN103739305A (en) | 2013-12-16 | 2013-12-16 | Aerated concrete block, preparation method thereof and application of fly ash to aerated concrete block |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723939A (en) * | 2013-12-16 | 2014-04-16 | 柳州市华深新型建材有限责任公司 | Preparation method of aerated concrete blocks |
Citations (4)
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|---|---|---|---|---|
| CN101172819A (en) * | 2007-10-29 | 2008-05-07 | 苏州金通新型建材有限公司 | Autoclaved aerated concrete building block and manufacturing method thereof |
| CN103304254A (en) * | 2012-03-09 | 2013-09-18 | 天津凯龙达新型建材制品有限公司 | Preparation method of aerated concrete block |
| CN103723938A (en) * | 2013-12-16 | 2014-04-16 | 柳州市华深新型建材有限责任公司 | Aerated concrete block and preparation method thereof |
| CN103724050A (en) * | 2013-12-16 | 2014-04-16 | 柳州市华深新型建材有限责任公司 | Aerated concrete block and preparation method thereof |
-
2013
- 2013-12-16 CN CN201310685825.7A patent/CN103739305A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172819A (en) * | 2007-10-29 | 2008-05-07 | 苏州金通新型建材有限公司 | Autoclaved aerated concrete building block and manufacturing method thereof |
| CN103304254A (en) * | 2012-03-09 | 2013-09-18 | 天津凯龙达新型建材制品有限公司 | Preparation method of aerated concrete block |
| CN103723938A (en) * | 2013-12-16 | 2014-04-16 | 柳州市华深新型建材有限责任公司 | Aerated concrete block and preparation method thereof |
| CN103724050A (en) * | 2013-12-16 | 2014-04-16 | 柳州市华深新型建材有限责任公司 | Aerated concrete block and preparation method thereof |
Non-Patent Citations (2)
| Title |
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| 杨雪君等: "劣质粉煤灰生产加气混凝土新工艺的研究", 《唐山学院学报》 * |
| 王迎春 等: "《水泥混合材和混凝土掺合料》", 31 August 2011, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723939A (en) * | 2013-12-16 | 2014-04-16 | 柳州市华深新型建材有限责任公司 | Preparation method of aerated concrete blocks |
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Application publication date: 20140423 |