CN110028296B - Building brick containing construction waste recycling object and manufacturing method thereof - Google Patents
Building brick containing construction waste recycling object and manufacturing method thereof Download PDFInfo
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- CN110028296B CN110028296B CN201910260249.9A CN201910260249A CN110028296B CN 110028296 B CN110028296 B CN 110028296B CN 201910260249 A CN201910260249 A CN 201910260249A CN 110028296 B CN110028296 B CN 110028296B
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/281—Polyepoxides
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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
- C04B28/10—Lime cements or magnesium oxide cements
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of building material processing, and particularly relates to a building brick containing a construction waste recycling object and a manufacturing method thereof. The invention comprises the following raw materials in parts by weight: 20-25 parts of construction waste recyclates, 12-16 parts of cement, 4-6 parts of fly ash, 3-4 parts of coal cinder, 6-8 parts of hydrated lime, 2-3 parts of modified glass fibers, 10-12 parts of quartz sand and 3-6 parts of phenolic epoxy resin. According to the invention, the construction waste is recycled to manufacture the construction bricks, so that the problems of environmental pollution, land resource occupation and the like caused by stacking of the construction waste can be effectively reduced, and the construction waste is used as a raw material for producing the construction bricks after the steps of primary sorting, winnowing, magnetic separation, ball milling and the like, so that the waste of resources can be effectively reduced, and the production cost is saved. In the magnetic separation step, the iron substances can be recycled, and the separation of the iron substances in the concrete structure and the concrete structure can be realized, namely the recycling of resources is realized.
Description
Technical Field
The invention belongs to the technical field of building material processing, and particularly relates to a building brick containing a construction waste recycling object and a manufacturing method thereof.
Background
The construction waste refers to dregs, spoil, waste materials, sludge and other wastes generated in the process of constructing, laying or dismantling and repairing various buildings, structures, pipe networks and the like by construction and construction units or individuals.
With the acceleration of industrialization and urbanization, the construction industry is rapidly developing, and along with the increase of the generated construction waste, the quantity of Chinese construction waste accounts for more than 1/3 of the total quantity of municipal waste.
Along with the increase of the quantity of urban construction wastes, the number of waste stacking points is also increased, and the area of a waste stacking field is gradually enlarged. The phenomenon that garbage and people compete for land is a serious step, most suburban garbage dumps are mainly piled in the open air, after long-term exposure to the sun and rain, harmful substances in the garbage (including polycyclic aromatic hydrocarbon structuring substances released by paint, coating, asphalt and the like in urban building garbage) permeate into soil through garbage leachate, so that a series of physical, chemical and biological reactions occur, such as filtration, adsorption and precipitation, or are absorbed by plant roots or are synthesized and absorbed by microorganisms, so that the suburban soil is polluted, and the soil quality is reduced.
At present, the recycling of construction waste becomes a trend of disposing construction waste.
Disclosure of Invention
In order to solve the problems, the invention provides a building brick containing a construction waste recycling object and a manufacturing method thereof.
A building brick containing a construction waste recycling object comprises the following raw materials in parts by weight: 20-25 parts of construction waste recyclates, 12-16 parts of cement, 4-6 parts of fly ash, 3-4 parts of coal cinder, 6-8 parts of hydrated lime, 2-3 parts of modified glass fibers, 10-12 parts of quartz sand and 3-6 parts of phenolic epoxy resin.
Preferably, the feed comprises the following raw materials in parts by weight: 22 parts of construction waste recyclates, 14 parts of cement, 4 parts of fly ash, 3 parts of coal slag, 7 parts of hydrated lime, 3 parts of modified glass fiber, 10 parts of quartz sand and 5 parts of phenolic epoxy resin.
Preferably, the modified glass fiber is prepared by soaking glass fiber in 13-15% NaOH solution for 2-3 h, taking out and naturally cooling.
Preferably, the construction waste recycling material includes one or more of construction waste masonry, waste concrete, waste floor tile, waste ceramic tile, waste marble material, and waste mortar mixed at any ratio.
A method for manufacturing a building brick containing a construction waste recycling object comprises the following steps:
a. preliminary sorting of construction waste: impurities such as domestic garbage, massive soil and the like contained in the construction waste are removed through manual screening, and then the construction waste enters a crusher to be crushed into particles with the diameter of less than 10 cm;
b. winnowing: the construction waste after the preliminary crushing enters an air separation device to remove substances such as household waste, light soil and the like contained in the construction waste;
c. magnetic separation: the construction waste after air separation enters a magnetic separator to remove iron substances, then is continuously transferred into a crusher to be crushed into particles with the diameter of less than 1cm, and then is subjected to secondary magnetic separation, so that the iron substances contained in the original waste are fully removed;
d. grinding the materials: transferring the construction waste subjected to the magnetic separation twice into a ball mill, grinding the construction waste and sieving the construction waste by a 400-mesh industrial sieve to obtain a construction waste recovered material; transferring the fly ash into a ball mill for fine grinding and sieving by a 325-mesh industrial sieve;
e. glass fiber treatment: transferring the modified glass fiber into a melting furnace, heating to 900-950 ℃, adding quartz sand into the glass fiber after the glass fiber is in a molten state, completely wrapping the quartz sand by the modified glass fiber, taking out, spreading and naturally cooling to obtain a mixed material A;
f. mixing materials: adding the finely ground construction waste recycled materials, fly ash, cement, coal slag, hydrated lime and novolac epoxy resin into a stirrer, adding water which is 0.7-0.75 time of the total mass of the materials, mixing, stirring for 15-20 min at a rotating speed of 70-80 r/min to obtain a mixed material B, and then mixing and stirring the mixed material A and the mixed material B uniformly to obtain a raw material mixture;
g. pressing and forming: transferring the prepared raw material mixture into a mould to be pressed and formed to obtain a building brick primary product;
h. and (4) natural maintenance: and naturally curing the prepared building brick primary product to obtain the finished building brick.
Preferably, the pressure is 8-10 MPa.
Preferably, the natural curing time is 15-18 days.
The invention has the beneficial effects that:
1. according to the invention, the construction waste is recycled to manufacture the construction bricks, so that the problems of environmental pollution, land resource occupation and the like caused by stacking of the construction waste can be effectively reduced, and the construction waste is used as a raw material for producing the construction bricks after the steps of primary sorting, winnowing, magnetic separation, ball milling and the like, so that the waste of resources can be effectively reduced, and the production cost is saved. In the magnetic separation step, the iron substances can be recycled, and the separation of the iron substances in the concrete structure and the concrete structure can be realized, namely the recycling of resources is realized.
2. In the processing process, the quartz sand is wrapped by the molten modified glass fiber and then naturally cooled, so that the strength of the finished building brick can be effectively enhanced, and the phenolic epoxy resin is added into the raw materials, so that the prepared building brick has excellent anti-seismic performance and high strength, does not need to be calcined in the processing process, and saves resources.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the technical solutions provided by the present invention include not only the contents shown in the examples.
Example 1
The method comprises the following steps of: 22 parts of construction waste recyclates, 14 parts of cement, 4 parts of fly ash, 3 parts of coal cinder, 7 parts of hydrated lime, 3 parts of modified glass fiber, 10 parts of quartz sand and 5 parts of phenolic epoxy resin;
step two, preliminary sorting of the construction waste: impurities such as domestic garbage, massive soil and the like contained in the construction waste are removed through manual screening, and then the construction waste enters a crusher to be crushed into particles with the diameter of less than 10 cm;
step two, air separation: the construction waste after the preliminary crushing enters an air separation device to remove substances such as household waste, light soil and the like contained in the construction waste;
step three, magnetic separation: the construction waste after air separation enters a magnetic separator to remove iron substances, then is continuously transferred into a crusher to be crushed into particles with the diameter of less than 1cm, and then is subjected to secondary magnetic separation, so that the iron substances contained in the original waste are fully removed;
step four, grinding the materials: transferring the construction waste subjected to the magnetic separation twice into a ball mill, grinding the construction waste and sieving the construction waste by a 400-mesh industrial sieve to obtain a construction waste recovered material; transferring the fly ash into a ball mill for fine grinding and sieving by a 325-mesh industrial sieve;
step five, glass fiber treatment: transferring the modified glass fiber into a melting furnace, heating to 940 ℃, adding quartz sand into the glass fiber after the glass fiber is in a molten state, completely wrapping the quartz sand by the modified glass fiber, taking out the glass fiber, spreading and naturally cooling to obtain a mixed material A;
step six, mixing materials: adding the finely ground construction waste recycled materials, fly ash, cement, coal slag, hydrated lime and novolac epoxy resin into a stirrer, adding water which is 0.70 times of the total mass of the materials, mixing, stirring at the rotating speed of 75r/min for 16min to obtain a mixed material B, and then mixing and stirring the mixed material A and the mixed material B uniformly to obtain a raw material mixture;
step seven, press forming: transferring the prepared raw material mixture into a mould to be pressed and formed to obtain a building brick primary product;
step eight, natural curing: and naturally curing the prepared building brick primary product to obtain the finished building brick.
Example 2
The method comprises the following steps of: 24 parts of construction waste recyclates, 13 parts of cement, 6 parts of fly ash, 3 parts of coal cinder, 7 parts of hydrated lime, 3 parts of modified glass fiber, 11 parts of quartz sand and 4 parts of phenolic epoxy resin;
step two, preliminary sorting of the construction waste: impurities such as domestic garbage, massive soil and the like contained in the construction waste are removed through manual screening, and then the construction waste enters a crusher to be crushed into particles with the diameter of less than 10 cm;
step two, air separation: the construction waste after the preliminary crushing enters an air separation device to remove substances such as household waste, light soil and the like contained in the construction waste;
step three, magnetic separation: the construction waste after air separation enters a magnetic separator to remove iron substances, then is continuously transferred into a crusher to be crushed into particles with the diameter of less than 1cm, and then is subjected to secondary magnetic separation, so that the iron substances contained in the original waste are fully removed;
step four, grinding the materials: transferring the construction waste subjected to the magnetic separation twice into a ball mill, grinding the construction waste and sieving the construction waste by a 400-mesh industrial sieve to obtain a construction waste recovered material; transferring the fly ash into a ball mill for fine grinding and sieving by a 325-mesh industrial sieve;
step five, glass fiber treatment: transferring the modified glass fiber into a melting furnace, heating to 920 ℃, adding quartz sand into the glass fiber after the glass fiber is in a molten state, completely wrapping the quartz sand by the modified glass fiber, taking out the glass fiber, spreading and naturally cooling to obtain a mixed material A;
step six, mixing materials: adding the finely ground construction waste recycled materials, fly ash, cement, coal slag, hydrated lime and novolac epoxy resin into a stirrer, adding water which is 0.7 time of the total mass of the materials, mixing, stirring for 15min at the rotating speed of 75r/min to obtain a mixed material B, and then uniformly mixing and stirring the mixed material A and the mixed material B to obtain a raw material mixture;
step seven, press forming: transferring the prepared raw material mixture into a mould to be pressed and formed to obtain a building brick primary product;
step eight, natural curing: and naturally curing the prepared building brick primary product to obtain the finished building brick.
Example 3
The method comprises the following steps of: 24 parts of construction waste recyclates, 15 parts of cement, 4 parts of fly ash, 3 parts of coal cinder, 8 parts of hydrated lime, 2 parts of modified glass fiber, 12 parts of quartz sand and 4 parts of phenolic epoxy resin;
step two, preliminary sorting of the construction waste: impurities such as domestic garbage, massive soil and the like contained in the construction waste are removed through manual screening, and then the construction waste enters a crusher to be crushed into particles with the diameter of less than 10 cm;
step two, air separation: the construction waste after the preliminary crushing enters an air separation device to remove substances such as household waste, light soil and the like contained in the construction waste;
step three, magnetic separation: the construction waste after air separation enters a magnetic separator to remove iron substances, then is continuously transferred into a crusher to be crushed into particles with the diameter of less than 1cm, and then is subjected to secondary magnetic separation, so that the iron substances contained in the original waste are fully removed;
step four, grinding the materials: transferring the construction waste subjected to the magnetic separation twice into a ball mill, grinding the construction waste and sieving the construction waste by a 400-mesh industrial sieve to obtain a construction waste recovered material; transferring the fly ash into a ball mill for fine grinding and sieving by a 325-mesh industrial sieve;
step five, glass fiber treatment: transferring the modified glass fiber into a melting furnace, heating to 940 ℃, adding quartz sand into the glass fiber after the glass fiber is in a molten state, completely wrapping the quartz sand by the modified glass fiber, taking out the glass fiber, spreading and naturally cooling to obtain a mixed material A;
step six, mixing materials: adding the finely ground construction waste recycled materials, fly ash, cement, coal slag, hydrated lime and novolac epoxy resin into a stirrer, adding water which is 0.75 time of the total mass of the materials, mixing, stirring at the rotating speed of 80r/min for 19min to obtain a mixed material B, and then mixing and stirring the mixed material A and the mixed material B uniformly to obtain a raw material mixture;
step seven, press forming: transferring the prepared raw material mixture into a mould to be pressed and formed to obtain a building brick primary product;
step eight, natural curing: and naturally curing the prepared building brick primary product to obtain the finished building brick.
According to the invention, the construction waste is recycled to manufacture the construction bricks, so that the problems of environmental pollution, land resource occupation and the like caused by stacking of the construction waste can be effectively reduced, and the construction waste is used as a raw material for producing the construction bricks after the steps of primary sorting, winnowing, magnetic separation, ball milling and the like, so that the waste of resources can be effectively reduced, and the production cost is saved. In the magnetic separation step, the iron substances can be recycled, and the separation of the iron substances in the concrete structure and the concrete structure can be realized, namely the recycling of resources is realized.
In the processing process, the quartz sand is wrapped by the molten modified glass fiber and then naturally cooled, so that the strength of the finished building brick can be effectively enhanced, and the phenolic epoxy resin is added into the raw materials, so that the prepared building brick has excellent anti-seismic performance and high strength, does not need to be calcined in the processing process, and saves resources.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention without departing from the technical spirit of the present invention.
Claims (5)
1. The building brick containing the construction waste recycling object is characterized by comprising the following raw materials in parts by weight: 20-25 parts of construction waste recyclates, 12-16 parts of cement, 4-6 parts of fly ash, 3-4 parts of coal cinder, 6-8 parts of hydrated lime, 2-3 parts of modified glass fibers, 10-12 parts of quartz sand and 3-6 parts of phenolic epoxy resin; the modified glass fiber is prepared by putting glass fiber into 13-15% NaOH solution, soaking for 2-3 h, taking out, naturally cooling, transferring the modified glass fiber into a melting furnace, heating to 900-950 ℃, adding quartz sand into the glass fiber after the glass fiber is in a molten state, completely wrapping the quartz sand by the modified glass fiber, taking out, spreading and naturally cooling to obtain a mixed material A; the construction waste recycling object comprises one or more of construction waste masonry, waste concrete, waste floor tiles, waste ceramic tiles, waste marble materials and waste mortar which are mixed in any ratio.
2. The building brick containing the construction waste recycling object according to claim 1, characterized by comprising the following raw materials in parts by weight: 22 parts of construction waste recyclates, 14 parts of cement, 4 parts of fly ash, 3 parts of coal slag, 7 parts of hydrated lime, 3 parts of modified glass fiber, 10 parts of quartz sand and 5 parts of phenolic epoxy resin.
3. The method for making building bricks containing construction waste recycling products according to claim 1, comprising the steps of:
a. preliminary sorting of construction waste: removing large blocks of soil and domestic garbage contained in the construction garbage through manual screening, and then crushing the domestic garbage and the large blocks of soil into particles with the diameter of less than 10cm in a crusher;
b. winnowing: the construction waste after the preliminary crushing enters an air separation device to remove domestic waste and light soil contained in the construction waste;
c. magnetic separation: the construction waste after air separation enters a magnetic separator to remove iron substances, then is continuously transferred into a crusher to be crushed into particles with the diameter of less than 1cm, and then is subjected to secondary magnetic separation, so that the iron substances contained in the original waste are fully removed;
d. grinding the materials: transferring the construction waste subjected to the magnetic separation twice into a ball mill, grinding the construction waste and sieving the construction waste by a 400-mesh industrial sieve to obtain a construction waste recovered material; transferring the fly ash into a ball mill for fine grinding and sieving by a 325-mesh industrial sieve;
e. glass fiber treatment: transferring the modified glass fiber into a melting furnace, heating to 900-950 ℃, adding quartz sand into the glass fiber after the glass fiber is in a molten state, completely wrapping the quartz sand by the modified glass fiber, taking out, spreading and naturally cooling to obtain a mixed material A;
f. mixing materials: adding the finely ground construction waste recycled materials, fly ash, cement, coal slag, hydrated lime and novolac epoxy resin into a stirrer, adding water which is 0.7-0.75 times of the total mass of the materials, mixing, stirring for 15-20 min at a rotating speed of 70-80 r/min to obtain a mixed material B, and then mixing and stirring the mixed material A and the mixed material B uniformly to obtain a raw material mixture;
g. pressing and forming: transferring the prepared raw material mixture into a mould to be pressed and formed to obtain a building brick primary product;
h. and (4) natural maintenance: and naturally curing the prepared building brick primary product to obtain the finished building brick.
4. The method for manufacturing the building brick containing the construction waste recycling object according to claim 3, wherein the pressure of the press forming is 8-10 MPa.
5. The method for making building bricks containing construction waste recyclates according to claim 3, wherein the natural curing time is 15 to 18 days.
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| CN110845176A (en) * | 2019-10-30 | 2020-02-28 | 河南晖睿智能科技有限公司 | Novel energy-saving environment-friendly building material and manufacturing method thereof |
| CN111055365B8 (en) * | 2019-12-30 | 2021-11-26 | 深圳市华夏建工集团股份有限公司 | Brick press with recycling function for constructional engineering |
| CN111847945A (en) * | 2020-07-29 | 2020-10-30 | 广东通兴再生资源科技有限公司 | Construction waste recycling method |
| CN114560666B (en) * | 2022-04-11 | 2023-07-04 | 广东大禹工程技术有限公司 | Environment-friendly durable building material |
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| 新型无机轻质绝热材料――膨胀玻化微珠及其应用;刘伟华等;《中国建材》;20070306(第03期);88-89 * |
| 水玻璃砂溃散性的改善;Ю.Ф.борвский等;《铸造》;19860622(第06期);44 * |
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| CN110028296A (en) | 2019-07-19 |
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