CN103723939A - Preparation method of aerated concrete blocks - Google Patents
Preparation method of aerated concrete blocks Download PDFInfo
- Publication number
- CN103723939A CN103723939A CN201310685928.3A CN201310685928A CN103723939A CN 103723939 A CN103723939 A CN 103723939A CN 201310685928 A CN201310685928 A CN 201310685928A CN 103723939 A CN103723939 A CN 103723939A
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- CN
- China
- Prior art keywords
- building block
- air
- concrete building
- preparation
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a preparation method of aerated concrete blocks. The method comprises the steps as follows: adding a proper amount of alkaline substance into coal ash, and then performing high-pressure steaming on the coal ash, so as to obtain the aerated concrete blocks. The method has the benefits that ingredients and chemical characteristics of coal ash are sufficiently utilized, so as to ensure that the coal ash is sufficiently converted into tobermorite to the greatest extent during chemical reaction, the strength and density of block products are greatly improved, the product performance is improved, product percent of pass is greatly improved and can reach more than 98.5 percent, while the industrial average percent of pass is only about 75 percent, the rate of multipurpose utilization of coal ash particularly poor-quality coal ash is greatly improved, the mixing amount of the coal ash in the domestic industrial technology is about 60 percent, while according to the method, the mixing amount of the coal ash can reach more than 75 percent.
Description
Technical field
The present invention relates to a kind of preparation method of air-entrained concrete building block.
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.
Further, the preparation method of above-mentioned a kind of air-entrained concrete building block, 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.
Beneficial effect of the present invention is: the preparation method of air-entrained concrete building block provided by the invention, has 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 (7)
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.
2. the preparation method of a kind of air-entrained concrete building block according to claim 1, is characterized in that, in described flyash, and 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.
3. the preparation method of a kind of air-entrained concrete building block according to claim 2, is characterized in that, described alkaline matter is calcium hydroxide.
4. the preparation method of a kind of air-entrained concrete building block according to claim 3, 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.
5. the preparation method of a kind of air-entrained concrete building block according to claim 4, is characterized in that, comprises the following steps:
1) raw material disposal: proportioning is got raw material is according to claim 4 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.
6. the preparation method of a kind of air-entrained concrete building block according to claim 5, is characterized in that, in described step 1), the blending ratio of aluminium powder and water is 3:5 by weight.
7. the preparation method of a kind of air-entrained concrete building block according to claim 6, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685928.3A CN103723939A (en) | 2013-12-16 | 2013-12-16 | Preparation method of aerated concrete blocks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685928.3A CN103723939A (en) | 2013-12-16 | 2013-12-16 | Preparation method of aerated concrete blocks |
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| CN103723939A true CN103723939A (en) | 2014-04-16 |
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ID=50448277
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|---|---|---|---|
| CN201310685928.3A Pending CN103723939A (en) | 2013-12-16 | 2013-12-16 | Preparation method of aerated concrete blocks |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106242612A (en) * | 2016-07-27 | 2016-12-21 | 亚太森博（山东）浆纸有限公司 | A kind of air-entrained concrete building block and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066886A (en) * | 2007-07-09 | 2007-11-07 | 张江 | Aerated concrete block and its production process |
| 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 |
| 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 |
| CN103739305A (en) * | 2013-12-16 | 2014-04-23 | 柳州市华深新型建材有限责任公司 | Aerated concrete block, preparation method thereof and application of fly ash to aerated concrete block |
-
2013
- 2013-12-16 CN CN201310685928.3A patent/CN103723939A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066886A (en) * | 2007-07-09 | 2007-11-07 | 张江 | Aerated concrete block and its production process |
| 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 |
| 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 |
| CN103739305A (en) * | 2013-12-16 | 2014-04-23 | 柳州市华深新型建材有限责任公司 | Aerated concrete block, preparation method thereof and application of fly ash to aerated concrete block |
Non-Patent Citations (1)
| Title |
|---|
| 王迎春 等: "《水泥混合材和混凝土掺合料》", 31 August 2011 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106242612A (en) * | 2016-07-27 | 2016-12-21 | 亚太森博（山东）浆纸有限公司 | A kind of air-entrained concrete building block and preparation method thereof |
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Application publication date: 20140416 |