CN112592136B - Environment-friendly greening brick containing waste powder recovered by asphalt mixing station and preparation method thereof - Google Patents
Environment-friendly greening brick containing waste powder recovered by asphalt mixing station and preparation method thereof Download PDFInfo
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- CN112592136B CN112592136B CN202011600517.6A CN202011600517A CN112592136B CN 112592136 B CN112592136 B CN 112592136B CN 202011600517 A CN202011600517 A CN 202011600517A CN 112592136 B CN112592136 B CN 112592136B
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an environment-friendly greening brick containing waste powder recycled by an asphalt mixing station and a preparation method thereof, wherein a certain amount of water is added into the waste powder recycled by the asphalt mixing station, aggregate and cement, and the mixture is stirred, mixed and pressed into a brick; the prepared greening brick does not contain substances causing pollution to the long-term environment, such as a binder, an organic solvent and the like, has enough strength, and can be used as a greening brick.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to an environment-friendly greening brick containing waste powder recycled by an asphalt mixing station and a preparation method thereof.
Background
With the continuous development of economic construction in China, the influence of waste powder generated by an asphalt mixing station on the ecological environment is more and more serious, in recent years, the environmental protection attention degree of the national government departments is increasingly improved, and the governments in various places increase the investment of dust control projects so as to improve the conditions and realize the aim of sustainable development. However, a large amount of fine-particle dust is generated in the production process of asphalt concrete, the treatment of the waste powder recovered by the asphalt mixing station in China is mainly landfill, and the underground landfill treatment occupies a large amount of storage yards and has potential danger of polluting underground water, so that how to treat the waste powder recovered by the asphalt mixing station is an environmental protection problem which needs to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an environment-friendly greening brick containing waste powder recycled by an asphalt mixing station and a preparation method thereof. The environment-friendly brick is a light environment-friendly greening brick, does not need high-temperature calcination, has low production cost and simple production process, solves the problem of environmental pollution caused by waste powder of the existing asphalt mixing station, changes waste into valuable, and is favorable for protecting ecological environment.
The technical scheme of the invention is realized as follows:
an environment-friendly greening brick containing waste powder recovered by an asphalt mixing station comprises, by weight, 25-45 parts of waste powder, 40-60 parts of aggregate and 8-15 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.4-2.6 t-m3The water content is 0.5-0.7%, and the particle size is 0.075-0.15 mm.
The limestone dust in the waste powder accounts for 80-90 wt%.
The aggregate is limestone with the grain diameter of 3mm-8 mm.
The cement is portland cement with the specific surface area of 450-480m2/kg。
The materials used above: the waste powder, the aggregate and the cement are all taken from an asphalt mixing station, the materials are obtained locally, the asphalt and the environment-friendly greening bricks can be co-produced, and good economic benefits can be generated.
Preferably, the environment-friendly greening brick containing the waste powder recycled by the asphalt mixing station comprises, by weight, 30-40 parts of waste powder, 50-55 parts of aggregate and 10-12 parts of cement on a dry basis. The raw materials required by the formula are all taken from an asphalt mixing station, the environment-friendly greening brick meeting the requirements can be produced under the condition that other auxiliary materials such as a binder and a solvent are not added, toxic substances such as an organic solvent are not added, and the environment is not polluted.
The preparation method of the environment-friendly greening brick comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to the proportion, adding water, and mixing by adopting a double-shaft mixer to obtain a mixture;
(2) and (2) feeding the mixture obtained in the step (1) into a mould, pressing and forming the mixture by using a hydraulic brick press, spraying water at the temperature of 0-35 ℃ for curing for 40-60 hours to harden the brick body, and demoulding to obtain the environment-friendly greening brick.
And (2) adding water in the step (1) to ensure that the liquid limit of the mixture is 30% and the plasticity index IP is 13. Only in this way, the greening bricks can have enough strength and can be used as greening bricks.
The double-shaft mixer in the step (1) is a commercially available device, and the hydraulic brick press in the step (2) is a bidirectional pressure type hydraulic brick press, model number YMZA-1200, which is a commercially available device.
And (3) carrying out watering curing at 0 ℃ for 60 hours or at 25 ℃ for 48 hours or at 35 ℃ for 40 hours, wherein the water is cured at a specific temperature and can generate enough strength after being pressed.
The environmental greening brick can be prepared into various shapes according to the needs, such as a grid shape (240 multiplied by 115 multiplied by 50mm), a well shape (250 multiplied by 190 multiplied by 70mm), a nine-hole shape (300 multiplied by 70mm), an 8 shape (400 multiplied by 200 multiplied by 70mm) and the like.
According to the environment-friendly greening brick, a certain amount of water is added into waste powder, aggregate and cement recovered by an asphalt mixing station, and the waste powder, the aggregate and the cement are stirred, mixed and pressed into the brick; the prepared greening brick does not contain substances causing pollution to the long-term environment, such as a binder, an organic solvent and the like, has enough strength, and can be used as a greening brick.
Detailed Description
Example 1
An environment-friendly greening brick containing waste powder recovered by an asphalt mixing station comprises, by weight, 35 parts of waste powder, 52 parts of aggregate and 10 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.508t/m3The water content is 0.6%, and the particle size is 0.075mm-0.10 mm.
Limestone dust in the waste powder accounts for 85 wt%.
The aggregate is limestone with the grain diameter of 3mm-5 mm.
The cement is Portland cement with the specific surface area of 460m2/kg。
The preparation method of the environment-friendly greening brick comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to a ratio, adding water, and mixing by using a double-shaft mixer to obtain a mixture, wherein the liquid limit of the mixture is 30% and the plasticity index IP is 13;
(2) and (2) feeding the mixture obtained in the step (1) into a mold, pressing and molding the mixture by a hydraulic brick press, spraying water at 25 ℃ for curing for 48 hours to harden the brick body, and demolding to obtain the environment-friendly greening brick.
Example 2
An environment-friendly greening brick containing waste powder recovered by an asphalt mixing station comprises the following components, by weight, 30 parts of waste powder, 50 parts of aggregate and 11 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.6t/m3The water content is 0.5%, and the particle size is 0.1mm-0.12 mm.
The limestone dust in the waste powder accounts for 80 wt%.
The aggregate is limestone with the grain diameter of 4mm-6 mm.
The cement is Portland cement with the specific surface area of 450m2/kg。
The preparation method of the environment-friendly greening brick comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to the proportion, adding water, and mixing by adopting a double-shaft mixer to obtain a mixture, wherein the liquid limit of the mixture is 30%, and the plasticity index IP is 13;
(2) and (2) feeding the mixture obtained in the step (1) into a mold, pressing and molding the mixture by a hydraulic brick press, spraying water at 35 ℃ for curing for 40 hours to harden the brick body, and demolding to obtain the environment-friendly greening brick.
Example 3
An environment-friendly greening brick containing waste powder recovered by an asphalt mixing station comprises, by weight, 40 parts of waste powder, 55 parts of aggregate and 12 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.4t/m3The water content is 0.7%, and the particle size is 0.12mm-0.14 mm.
Limestone dust in the waste powder accounts for 90 wt%.
The aggregate is limestone with the grain diameter of 6mm-8 mm.
The cement is Portland cement with a specific surface area of 480m2/kg。
The preparation method of the environment-friendly greening brick comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to a ratio, adding water, and mixing by using a double-shaft mixer to obtain a mixture, wherein the liquid limit of the mixture is 30% and the plasticity index IP is 13;
(2) and (2) feeding the mixture obtained in the step (1) into a mold, pressing and molding the mixture by a hydraulic brick press, spraying water at 0 ℃ for curing for 60 hours to harden the brick body, and demolding to obtain the environment-friendly greening brick.
Example 4
An environment-friendly greening brick containing waste powder recovered by an asphalt mixing station comprises, by weight, 25 parts of waste powder, 40 parts of aggregate and 8 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.4t/m3The water content is 0.7%, and the particle size is 0.13mm-0.15 mm.
The limestone dust in the waste powder accounts for 87 wt%.
The aggregate is limestone with the particle size of 5mm-7 mm.
The cement is Portland cement with the specific surface area of 470m2/kg。
The preparation method of the environment-friendly greening brick comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to a ratio, adding water, and mixing by using a double-shaft mixer to obtain a mixture, wherein the liquid limit of the mixture is 30% and the plasticity index IP is 13;
(2) and (2) feeding the mixture obtained in the step (1) into a mold, pressing and molding the mixture by a hydraulic brick press, spraying water at 25 ℃ for curing for 48 hours to harden the brick body, and demolding to obtain the environment-friendly greening brick.
Example 5
An environment-friendly greening brick containing waste powder recovered by an asphalt mixing station comprises the following components, by weight, 45 parts of waste powder, 60 parts of aggregate and 15 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.5t/m3The water content is 0.5%, and the particle size is 0.08mm-0.10 mm.
The limestone dust in the waste powder accounts for 82% wt.
The aggregate is limestone with the particle size of 7mm-8 mm.
The cement is Portland cement with the specific surface area of 455m2/kg。
The preparation method of the environment-friendly greening brick comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to a ratio, adding water, and mixing by using a double-shaft mixer to obtain a mixture, wherein the liquid limit of the mixture is 30% and the plasticity index IP is 13;
(2) and (2) feeding the mixture obtained in the step (1) into a mold, pressing and molding the mixture by a hydraulic brick press, spraying water at 0 ℃ for curing for 60 hours to harden the brick body, and demolding to obtain the environment-friendly greening brick.
The environmental greening bricks prepared in examples 1 to 5 were subjected to the compression strength and the breaking strength tests, and the results are as follows:
as can be seen from the test results in the above table, the compressive strength and the flexural strength of the grid ring greening brick prepared in example 1 are optimal.
Claims (6)
1. The utility model provides an environmental protection greening brick that contains pitch mixing station recovery waste powder which characterized in that: the cement mortar consists of the following components, by weight, 25-45 parts of waste powder, 40-60 parts of aggregate and 8-15 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.4-2.6t/m3The water content is 0.5 to 0.7 percent, and the particle size is 0.075 to 0.15 mm;
limestone dust accounts for 80-90 wt% of the waste powder;
the aggregate is limestone with the grain size of 3mm-8 mm;
the cement is Portland cement with the specific surface area of 450-2/kg；
The preparation method of the environment-friendly greening brick comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to the proportion, adding water, and mixing by adopting a double-shaft mixer to obtain a mixture;
(2) feeding the mixture obtained in the step (1) into a mould, pressing and forming the mixture by a hydraulic brick press, spraying water at the temperature of 0-35 ℃ for curing for 40-60 hours to harden the brick body, and demoulding to obtain the environment-friendly greening brick;
and (2) adding water in the step (1) to ensure that the liquid limit of the mixture is 30% and the plasticity index IP is 13.
2. The environment-friendly greening brick containing recycled waste powder of an asphalt mixing station as claimed in claim 1, is characterized in that: the cement mortar consists of the following components, by weight, 30-40 parts of waste powder, 50-55 parts of aggregate and 10-12 parts of cement on a dry basis.
3. The method for preparing the environmental greening brick as claimed in claim 1, wherein the method comprises the following steps: the method comprises the following specific steps:
(1) mixing the waste powder, the aggregate and the cement according to the proportion, adding water, and mixing by adopting a double-shaft mixer to obtain a mixture;
(2) feeding the mixture obtained in the step (1) into a mould, pressing and forming the mixture by a hydraulic brick press, spraying water at the temperature of 0-35 ℃ for curing for 40-60 hours to harden the brick body, and demoulding to obtain the environment-friendly greening brick;
adding water in the step (1) to ensure that the liquid limit of the mixture is 30% and the plasticity index IP is 13;
the environment-friendly greening brick comprises, by weight, 25-45 parts of waste powder, 40-60 parts of aggregate and 8-15 parts of cement on a dry basis;
the waste powder is recovered from an asphalt mixing station, and the apparent density of the waste powder is 2.4-2.6t/m3The water content is 0.5 to 0.7 percent, and the particle size is 0.075 to 0.15 mm;
limestone dust accounts for 80-90 wt% of the waste powder;
the aggregate is limestone with the grain size of 3mm-8 mm;
the cement is Portland cement with the specific surface area of 450-2/kg。
4. The method for preparing the environmental greening brick as claimed in claim 3, wherein the method comprises the following steps: and (3) carrying out watering curing at 0 ℃ for 60 hours in the step (2).
5. The method for preparing the environmental greening brick as claimed in claim 3, wherein the method comprises the following steps: and (3) carrying out water spraying curing at 25 ℃ for 48 hours in the step (2).
6. The method for preparing the environmental greening brick as claimed in claim 3, wherein the method comprises the following steps: and (3) the step (2) of watering and curing is carried out for 40 hours at the temperature of 35 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011600517.6A CN112592136B (en) | 2020-12-29 | 2020-12-29 | Environment-friendly greening brick containing waste powder recovered by asphalt mixing station and preparation method thereof |
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| CN112592136B true CN112592136B (en) | 2022-05-17 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108569878A (en) * | 2017-03-09 | 2018-09-25 | 武汉江夏路桥工程总公司 | A kind of recycling processing method of the useless powder of asphalt concrete batching ＆ mixing plant recycling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1033575A (en) * | 1973-12-19 | 1978-06-27 | John E. Allen | Treatment of steel mill waste dusts containing zinc |
| CN102093011A (en) * | 2010-11-29 | 2011-06-15 | 司密花 | Burning-free block brick prepared from bulky industrial waste residues |
| CN105272008A (en) * | 2015-10-30 | 2016-01-27 | 湖南云中再生科技股份有限公司 | Environment-friendly multifunctional brick and preparation method thereof |
| CN111039642A (en) * | 2020-01-16 | 2020-04-21 | 深圳港创建材股份有限公司 | Pressure forming brick prepared from waste bricks and preparation method thereof |
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- 2020-12-29 CN CN202011600517.6A patent/CN112592136B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108569878A (en) * | 2017-03-09 | 2018-09-25 | 武汉江夏路桥工程总公司 | A kind of recycling processing method of the useless powder of asphalt concrete batching ＆ mixing plant recycling |
Non-Patent Citations (1)
| Title |
|---|
| 沥青拌合站回收矿粉性能研究;裴旭;《市政技术》;20200910;第38卷(第5期);第290-292页 * |
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