CN112174561A - Method for preparing lime fly ash stable recycled aggregate and product thereof - Google Patents
Method for preparing lime fly ash stable recycled aggregate and product thereof Download PDFInfo
- Publication number
- CN112174561A CN112174561A CN202010871157.7A CN202010871157A CN112174561A CN 112174561 A CN112174561 A CN 112174561A CN 202010871157 A CN202010871157 A CN 202010871157A CN 112174561 A CN112174561 A CN 112174561A
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- CN
- China
- Prior art keywords
- brick
- construction waste
- tile
- fly ash
- lime
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 42
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 42
- 239000004571 lime Substances 0.000 title claims abstract description 42
- 239000010881 fly ash Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002699 waste material Substances 0.000 claims abstract description 83
- 239000011449 brick Substances 0.000 claims abstract description 75
- 238000010276 construction Methods 0.000 claims abstract description 74
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000002245 particle Substances 0.000 claims abstract description 18
- 239000005997 Calcium carbide Substances 0.000 claims abstract description 13
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 238000012216 screening Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 10
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000002956 ash Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for preparing lime fly ash stable recycled aggregate, which comprises the following steps: (1) preparing the following raw materials in percentage by mass: 30-60% of construction waste concrete coarse aggregate with the particle size of 5-31.5 mm, 20-40% of brick and tile fine aggregate with the particle size of 1-5 mm, 8-15% of brick and tile construction waste active micro powder, 1-5% of calcium carbide or lime and 5-12% of water; (2) the construction waste concrete coarse aggregate, the brick and tile fine aggregate, the brick and tile construction waste active micro powder and the calcium carbide lime or the lime are mixed, then water is added for stirring and mixing, the lime fly ash stable recycled aggregate is obtained, the problem of recycling of the construction waste is effectively solved, the purposes of environmental protection and resource recycling are achieved, the environment is protected, the cost is greatly reduced, the construction is easy, good economic benefits and social benefits are achieved, and the wide popularization and application are facilitated.
Description
Technical Field
The invention belongs to the technical field of construction waste regenerated active micro powder, and particularly relates to a method for preparing a stable recycled aggregate from lime fly ash.
Background
The rapid growth of population and the urbanization development lead to the rapid development of the building industry of central cities, old buildings are pushed down and dismantled every day, and more construction waste is generated (wherein the waste concrete accounts for more than 34 percent), wherein the construction waste refers to waste generated in the process of constructing, laying or dismantling and repairing various buildings, structures, pipe networks and the like by construction units or individuals. The construction waste comprises the following components: scattered mortar and concrete, broken bricks and broken concrete blocks, and yellow sand, stones, block stones, slag soil and the like scattered in the process of carrying. Meanwhile, newly-built multi-storey high-rise buildings adopt basement and pile foundation structures to meet the requirements of civil air defense and building functions, foundation pit concrete horizontal supporting beams and super-irrigation engineering pile heads need to be broken, and a large number of concrete detection test blocks of the building engineering are buried by waste. The waste landfill of the construction waste wastes resources, pollutes the environment, destroys the ecology and occupies a large amount of land. Therefore, a method for preparing the lime fly ash stable recycled aggregate, which can solve the problem of utilization of the stable recycled aggregate of the construction waste and achieve the purposes of environmental protection and resource recycling, is urgently needed.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the method for preparing the stable recycled aggregate from the lime fly ash, which has simple process and easy realization, can crush the construction waste and then stabilize the recycled aggregate, and achieves the purposes of environmental protection and resource recycling.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a method for preparing lime fly ash stable recycled aggregate comprises the following steps:
(1) preparing the following raw materials in percentage by mass: 30-60% of construction waste concrete coarse aggregate with the particle size of 5-31.5 mm, 20-40% of brick and tile fine aggregate with the particle size of 1-5 mm, 8-15% of brick and tile construction waste active micro powder, 1-5% of calcium carbide or lime and 5-12% of water;
(2) mixing the building waste concrete coarse aggregate, the brick and tile fine aggregate, the brick and tile building waste active micro powder and the calcium carbide or the lime, then adding water, stirring and mixing to obtain the lime fly ash stable recycled aggregate.
As a preferable scheme of the invention, the construction waste concrete coarse aggregate is concrete construction waste or/and brick and tile construction waste.
As a preferred scheme of the invention, concrete construction waste or/and brick and tile construction waste is collected, and then crushed and screened to obtain the construction waste concrete coarse aggregate with the particle size of 5-31.5 mm.
As a preferable scheme of the invention, the construction waste concrete coarse aggregate is concrete construction waste or/and brick and tile construction waste.
As a preferred scheme of the invention, the brick and tile type fine aggregate is brick and tile type construction waste.
As a preferred scheme of the invention, concrete construction waste or/and brick and tile construction waste is collected, and then crushed and screened to obtain construction waste concrete coarse aggregate with the particle size of 5-31.5 mm and brick and tile fine aggregate with the particle size of 1-5 mm.
As a preferable scheme of the invention, the active micro powder of the brick and tile type construction waste is 325-400 meshes.
As a preferred scheme of the invention, the preparation method of the brick and tile type construction waste active micro powder comprises the following steps: conveying the red bricks to a crushing and screening system through a conveyor belt, and crushing the red bricks by the crushing and screening system to obtain red brick materials with the particle size of less than 30 mm; and conveying the red brick material to a grinding machine for grinding to produce the brick and tile type construction waste active micro powder.
In a preferred embodiment of the present invention, the red bricks are sorted from the construction waste by a sorting machine.
As a preferred scheme of the invention, the crushing and screening system stores the red brick materials, and the materials are conveyed to the grinding machine through the blanking system until the storage capacity of the red brick materials meets the working requirement of the grinding machine.
In a preferred embodiment of the present invention, the mill is a vertical mill.
As a preferable scheme of the invention, the active micro powder of the brick and tile type construction waste produced by the grinding of the grinder is conveyed to a micro powder tank through a pneumatic conveying device.
As a refinement of the invention, the mill is a vertical mill.
The invention has the beneficial effects that: the method provided by the invention has simple and easy working procedures and easy realization, skillfully mixes the construction waste concrete coarse aggregate, the brick and tile fine aggregate, the brick and tile construction waste active micro powder and the calcium carbide slag or the lime with water to obtain the lime fly ash stable recycled aggregate, has high activity, can effectively solve the problem of recycling of the construction waste, achieves the purposes of protecting the environment and recycling resources, not only protects the environment, but also greatly reduces the cost, is easy to construct, has good economic benefits and social benefits, and is beneficial to wide popularization and application.
The present invention will be further described with reference to the following examples.
Detailed Description
Example 1: the method for preparing the lime fly ash stable recycled aggregate provided by the embodiment comprises the following steps:
(1) preparing the following raw materials in percentage by mass: 50% of construction waste concrete coarse aggregate with the particle size of 5-31.5 mm, 29% of tile fine aggregate with the particle size of 1-5 mm, 8% of tile construction waste active micro powder, 4% of calcium carbide or lime and 9% of water; the construction waste concrete coarse aggregate is concrete construction waste or/and brick and tile construction waste, and specifically, the concrete construction waste or/and brick and tile construction waste is collected, then crushed and screened to obtain the construction waste concrete coarse aggregate with the particle size of 5-31.5 mm and the brick and tile fine aggregate with the particle size of 1-5 mm. The brick and tile type fine aggregate is preferably washed sand. The later strength of the mortar is continuously strengthened by utilizing the ash activity of the calcium carbide ash or the lime; meanwhile, the generation of bleeding phenomenon is reduced, and the surface wear resistance is greatly improved. The preparation method of the brick and tile type construction waste active micro powder comprises the following steps: the red bricks are sorted out from the construction waste by a sorting machine. Conveying the red bricks to a crushing and screening system through a conveyor belt, and crushing the red bricks by the crushing and screening system to obtain red brick materials with the particle size of less than 30 mm; the red brick material is stored by the crushing and screening system, and when the storage capacity of the red brick material meets the working requirement of the grinding machine, the material is conveyed to the grinding machine by the blanking system, the grinding machine is preferably a vertical grinding machine, and the grinding effect is good. Grinding the red brick material by a vertical mill to produce the brick and tile type construction waste active micro powder. The active micro powder of the brick and tile construction waste is conveyed to a micro powder tank through a pneumatic conveying device. The sorted red bricks are sequentially subjected to crushing, screening and grinding processes to regenerate the brick and tile type construction waste active micro powder with large specific surface area and high activity, so that the problem of recycling of construction waste can be effectively solved, and the purposes of environmental protection and resource recycling are achieved.
(2) Mixing the building waste concrete coarse aggregate, the brick and tile fine aggregate, the brick and tile building waste active micro powder and the calcium carbide or the lime, then adding water, stirring and mixing to obtain the lime fly ash stable recycled aggregate.
Example 2: the method for preparing the lime fly ash stabilized recycled aggregate provided by the embodiment is basically the same as that in the embodiment 1, and has the following differences in mass percentage: 30% of construction waste concrete coarse aggregate, 40% of brick and tile fine aggregate, 15% of brick and tile construction waste active micro powder, 2% of calcium carbide, 2% of lime and 10% of water.
Example 3: the method for preparing the lime fly ash stabilized recycled aggregate provided by the embodiment is basically the same as that in the embodiment 1, and has the following differences in mass percentage: 60% of construction waste concrete coarse aggregate, 20% of brick and tile fine aggregate, 13% of brick and tile construction waste active micro powder, 2% of lime and 5% of water.
Example 4: the method for preparing the lime fly ash stabilized recycled aggregate provided by the embodiment is basically the same as that in the embodiment 1, and has the following differences in mass percentage: 45% of construction waste concrete coarse aggregate, 28% of brick and tile fine aggregate, 14% of brick and tile construction waste active micro powder, 1% of calcium carbide and 12% of water.
The above examples are only preferred embodiments of the present invention, and the present invention is not limited to all embodiments, and any technical solution using one of the above examples or equivalent changes made according to the above examples is within the scope of the present invention. The invention skillfully mixes the construction waste concrete coarse aggregate, the brick and tile fine aggregate, the brick and tile construction waste active micro powder and the calcium carbide lime or the lime with water to obtain the lime fly ash stable recycled aggregate, has high activity, can effectively solve the problem of recycling the construction waste, achieves the purposes of protecting the environment and recycling resources, not only protects the environment, but also greatly reduces the cost, and is easy to construct.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. In addition, although specific terms are used herein, they are used for convenience of description and do not limit the present invention in any way, and other manufacturing methods similar or identical to those described above are within the scope of the present invention.
Claims (10)
1. A method for preparing lime fly ash stable recycled aggregate is characterized by comprising the following steps:
(1) preparing the following raw materials in percentage by mass: 30-60% of construction waste concrete coarse aggregate with the particle size of 5-31.5 mm, 20-40% of brick and tile fine aggregate with the particle size of 1-5 mm, 8-15% of brick and tile construction waste active micro powder, 1-5% of calcium carbide or lime and 5-12% of water;
(2) mixing the building waste concrete coarse aggregate, the brick and tile fine aggregate, the brick and tile building waste active micro powder and the calcium carbide or the lime, then adding water, stirring and mixing to obtain the lime fly ash stable recycled aggregate.
2. The method for preparing the lime fly ash stabilized recycled aggregate according to claim 1, wherein the construction waste concrete coarse aggregate is concrete construction waste or/and brick and tile construction waste.
3. The method for preparing the lime fly ash stabilized recycled aggregate according to claim 1, wherein the brick and tile type fine aggregate is brick and tile type construction waste.
4. The method for preparing the lime fly ash stable recycled aggregate according to claim 2, wherein the concrete construction waste or/and the brick and tile construction waste is collected, crushed and screened to obtain the construction waste concrete coarse aggregate with the particle size of 5-31.5 mm and the brick and tile fine aggregate with the particle size of 1-5 mm.
5. The method for preparing the lime fly ash stabilized recycled aggregate according to claim 2, wherein the active micro powder of the brick and tile construction waste is 325-400 meshes.
6. The method for preparing the lime fly ash stable recycled aggregate according to claim 1, wherein the preparation method of the brick and tile construction waste active micro powder comprises the following steps: conveying the red bricks to a crushing and screening system through a conveyor belt, and crushing the red bricks by the crushing and screening system to obtain red brick materials with the particle size of less than 30 mm; and conveying the red brick material to a grinding machine for grinding to produce the brick and tile type construction waste active micro powder.
7. The method for preparing lime fly ash stabilized recycled aggregate according to claim 6, wherein the red bricks are sorted from the construction waste by a sorting machine.
8. The method for preparing lime fly ash stabilized recycled aggregate according to claim 6, wherein the crushing and screening system stores red brick materials, and the materials are conveyed to the mill through a blanking system until the storage capacity of the red brick materials meets the working requirement of the mill.
9. The method for making a lime fly ash stabilized recycled aggregate according to claim 6, wherein the mill is a vertical mill.
10. The method for preparing the lime fly ash stabilized recycled aggregate according to claim 7, wherein the activated micropowder of the brick and tile construction waste produced by the grinding of the mill is delivered to a micropowder tank by a pneumatic delivery device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010871157.7A CN112174561A (en) | 2020-08-26 | 2020-08-26 | Method for preparing lime fly ash stable recycled aggregate and product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010871157.7A CN112174561A (en) | 2020-08-26 | 2020-08-26 | Method for preparing lime fly ash stable recycled aggregate and product thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112174561A true CN112174561A (en) | 2021-01-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010871157.7A Pending CN112174561A (en) | 2020-08-26 | 2020-08-26 | Method for preparing lime fly ash stable recycled aggregate and product thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112174561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745569A (en) * | 2022-12-03 | 2023-03-07 | 深圳市特区建工固废资源化有限公司 | Method for preparing sintered wallboard from construction waste |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002338321A (en) * | 2001-03-06 | 2002-11-27 | Taiheiyo Cement Corp | Concrete composition using regenerated aggregate and product |
| CN102211889A (en) * | 2011-04-19 | 2011-10-12 | 上海德滨环保科技有限公司 | Method for resource recovery of construction wastes |
| CN105461262A (en) * | 2015-11-06 | 2016-04-06 | 首钢环境产业有限公司 | Pervious concrete and preparation method thereof |
| CN107098638A (en) * | 2017-04-13 | 2017-08-29 | 越艳 | Insulation blocks containing building waste aggregate and preparation method thereof |
| CN107117894A (en) * | 2017-04-13 | 2017-09-01 | 越艳 | Permeable pavement brick containing building refuse brick tiling fine aggregate and preparation method thereof |
| CN108558303A (en) * | 2018-01-17 | 2018-09-21 | 同济大学 | A kind of regeneration concrete bulk and its production method |
| CN109942265A (en) * | 2019-01-30 | 2019-06-28 | 北京首钢资源综合利用科技开发有限公司 | A kind of roadbed material and its application using building waste processing product |
-
2020
- 2020-08-26 CN CN202010871157.7A patent/CN112174561A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002338321A (en) * | 2001-03-06 | 2002-11-27 | Taiheiyo Cement Corp | Concrete composition using regenerated aggregate and product |
| CN102211889A (en) * | 2011-04-19 | 2011-10-12 | 上海德滨环保科技有限公司 | Method for resource recovery of construction wastes |
| CN105461262A (en) * | 2015-11-06 | 2016-04-06 | 首钢环境产业有限公司 | Pervious concrete and preparation method thereof |
| CN107098638A (en) * | 2017-04-13 | 2017-08-29 | 越艳 | Insulation blocks containing building waste aggregate and preparation method thereof |
| CN107117894A (en) * | 2017-04-13 | 2017-09-01 | 越艳 | Permeable pavement brick containing building refuse brick tiling fine aggregate and preparation method thereof |
| CN108558303A (en) * | 2018-01-17 | 2018-09-21 | 同济大学 | A kind of regeneration concrete bulk and its production method |
| CN109942265A (en) * | 2019-01-30 | 2019-06-28 | 北京首钢资源综合利用科技开发有限公司 | A kind of roadbed material and its application using building waste processing product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745569A (en) * | 2022-12-03 | 2023-03-07 | 深圳市特区建工固废资源化有限公司 | Method for preparing sintered wallboard from construction waste |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20210105 |