CN111187093A - Non-autoclaved concrete aerated insulating brick produced by utilizing construction waste and production method thereof - Google Patents
Non-autoclaved concrete aerated insulating brick produced by utilizing construction waste and production method thereof Download PDFInfo
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- CN111187093A CN111187093A CN201811360194.0A CN201811360194A CN111187093A CN 111187093 A CN111187093 A CN 111187093A CN 201811360194 A CN201811360194 A CN 201811360194A CN 111187093 A CN111187093 A CN 111187093A
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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
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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
-
- 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
- C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
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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
- C04B28/06—Aluminous cements
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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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)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a steam-curing-free concrete aerated insulating brick produced by utilizing construction waste and a production method thereof, wherein the insulating brick is prepared from the following raw materials, by weight, 30-40 parts of cement, 20-30 parts of aggregate, 8-10 parts of CaO, and CaSO43-5 parts of carbamide, 3-5 parts of polyvinyl alcohol, 5-10 parts of hydroxypropyl methyl fiber, 3-5 parts of calcium formate, 5-10 parts of foaming agent and 40-60 parts of external water. The cement is common silicate, high alumina cement and fly ashOne or more than two of cement, alumina cement and aluminate cement are compounded; the aggregate is construction waste, and the granularity is less than or equal to 5 mm; the foaming agent is one or more of aluminum powder, aluminum powder paste, hydrogen peroxide and sodium bicarbonate. The non-autoclaved concrete insulating brick is obtained through material mixing, injection molding and curing. Effectively reduces the encroachment of construction waste on the land and the pollution to the living environment, and has the advantages of good heat preservation, light weight, good sound insulation, high strength, nailability, sawability and reduced construction strength.
Description
Technical Field
The invention relates to a building material, in particular to a steam-curing-free concrete insulating brick produced by utilizing building waste and a production method thereof, which are mainly used for building insulating blocks and sound-insulation inner wall partition blocks.
Background
At present, in the production of concrete air-entrapping heat-insulating bricks, a certain amount of aggregate such as sand, stone and perlite is added in order to improve the compressive strength of the heat-insulating bricks besides a certain amount of cement and foaming agent. And the concrete insulating brick in the prior art needs a heating and curing process in a heating kettle. With the acceleration of urban construction, a large amount of construction wastes are generated in the processes of building removal, reconstruction, expansion and resident decoration and fitment, the construction wastes cannot be utilized to seriously pollute living environment and occupy a large amount of land, the quantity of the construction wastes generated and discharged by construction and construction in China is roughly counted to be more than 1 hundred million tons every year, and the quantity of the construction wastes generated in the building decoration, removal and construction industries reaches hundreds of millions of tons, so that how to treat and utilize more and more construction wastes becomes an important subject faced by all levels of government departments and building waste generation and treatment units. Therefore, the non-autoclaved aerated concrete insulating brick produced by recycling the construction waste is urgently needed at present.
Disclosure of Invention
The invention aims to provide a steam-curing-free concrete aerated insulating brick produced by utilizing construction waste and a production method thereof.
In order to achieve the purpose, the invention is realized by the following technical scheme: the non-autoclaved aerated concrete insulating brick produced by utilizing the construction waste is prepared from the following raw materials in parts by weight: 30-40 parts of cement, 20-30 parts of aggregate, 8-10 parts of CaO, 43-5 parts of CaSO, 3-5 parts of carbamide, 3-5 parts of polyvinyl alcohol, 5-10 parts of hydroxypropyl methyl fiber, 3-5 parts of calcium formate, 5-10 parts of foaming agent and 40-60 parts of external water.
The cement is one or more of common silicate (42.5), high-alumina cement, fly ash cement, alumina cement and aluminate cement; the aggregate is construction waste, and the granularity is less than or equal to 5 mm; the foaming agent is one or more of aluminum powder, aluminum powder paste, hydrogen peroxide and sodium bicarbonate.
The invention relates to a method for producing a non-autoclaved aerated concrete insulating brick by using construction waste, which comprises the following steps in sequence:
(1) crushing and screening aggregate, controlling the particle size to be below 5mm, adding the aggregate, CaO, CaSO4 and carbamide into the cement according to the weight parts, and mixing and stirring to obtain a dry powder mixture;
(2) uniformly mixing polyvinyl alcohol, hydroxypropyl methylcellulose, calcium formate and added water according to the weight ratio, then mixing with the dry powder mixture in the step (1), and uniformly stirring to obtain mixture slurry;
(3) adding a foaming agent into the mixture slurry according to the weight part, uniformly stirring, injecting into a mold, hardening by the hydration heat of the mixture slurry, maintaining for 2-8 hours, and demolding;
(4) and (5) after demoulding, covering a plastic film, and curing for 20-30 days in a greenhouse to obtain a finished product.
The method utilizes the crushed construction waste as the aggregate to produce the non-autoclaved concrete aerated insulating brick, effectively reduces the land encroachment and the pollution to the living environment by the construction waste, simultaneously has the advantages of good heat insulation, light weight, good sound insulation, high strength, nailability, sawability and reduced construction strength, and conforms to the living idea of green, environmental protection and low carbon.
Detailed Description
Example 1
The non-autoclaved aerated concrete insulating brick produced by utilizing the construction waste is prepared from the following raw materials in parts by weight: 40 parts of Portland cement, 30 parts of aggregate, 10 parts of CaO, 45 parts of CaSO, 5 parts of carbamide, 5 parts of polyvinyl alcohol, 10 parts of hydroxypropyl methyl cellulose, 5 parts of calcium formate, 10 parts of foaming agent aluminum powder and 50 parts of external water; the aggregate is construction waste, and the granularity is less than or equal to 5 mm.
The method for producing the non-autoclaved aerated concrete insulating brick by utilizing the construction waste is prepared by the following steps in sequence:
(1) crushing the building garbage serving as aggregate, screening, controlling the particle size to be less than 5mm, adding the aggregate, CaO, CaSO4 and carbamide into silicate cement according to the weight parts, and mixing and stirring to obtain a dry powder mixture;
(2) uniformly mixing polyvinyl alcohol, hydroxypropyl methylcellulose, calcium formate and added water according to the weight ratio, then mixing with the dry powder mixture in the step (1), and uniformly stirring to obtain mixture slurry;
(3) adding foaming agent aluminum powder into the mixture slurry according to the weight part, uniformly stirring, injecting into a mold, hardening by the hydration heat of the mixture slurry, maintaining for 2 hours, and demolding;
(4) and (5) covering a plastic film after demoulding, and curing for 20 days in a greenhouse at the later stage to obtain a finished product.
Example 2
The non-autoclaved aerated concrete insulating brick produced by utilizing the construction waste is prepared from the following raw materials in parts by weight: 35 parts of cement, 25 parts of aggregate, 9 parts of CaO, 44 parts of CaSO, 4 parts of carbamide, 4 parts of polyvinyl alcohol, 7 parts of hydroxypropyl methyl cellulose, 4 parts of calcium formate, 8 parts of foaming agent and 60 parts of external water; the cement is ordinary silicate and high-alumina cement; the aggregate is construction waste, and the granularity is less than or equal to 5 mm; the foaming agent is aluminum powder or aluminum paste.
The method for producing the non-autoclaved aerated concrete insulating brick by utilizing the construction waste is prepared by the following steps in sequence:
(1) crushing the construction waste serving as the aggregate, screening, controlling the particle size to be less than 5mm, adding the aggregate, CaO, CaSO4 and carbamide into the cement according to the weight parts, and mixing and stirring to obtain a dry powder mixture;
(2) uniformly mixing polyvinyl alcohol, hydroxypropyl methylcellulose, calcium formate and added water according to the weight ratio, then mixing with the dry powder mixture in the step (1), and uniformly stirring to obtain mixture slurry;
(3) adding a foaming agent into the mixture slurry according to the weight part, uniformly stirring, injecting into a mold, hardening by the hydration heat of the mixture slurry, maintaining for 8 hours, and demolding;
(4) and (5) covering a plastic film after demoulding, and curing for 30 days in a greenhouse at the later stage to obtain a finished product.
Example 3
The non-autoclaved aerated concrete insulating brick produced by utilizing the construction waste is prepared from the following raw materials in parts by weight: 30 parts of cement, 20 parts of aggregate, 8 parts of CaO, 43 parts of CaSO, 3 parts of carbamide, 3 parts of polyvinyl alcohol, 5 parts of hydroxypropyl methyl cellulose, 3 parts of calcium formate, 6 parts of foaming agent and 40 parts of external water; the cement is ordinary silicate, high-alumina cement and fly ash cement; the aggregate is construction waste, and the granularity is less than or equal to 5 mm; the foaming agent comprises 4 parts of hydrogen peroxide and 2 parts of sodium bicarbonate.
The method for producing the non-autoclaved aerated concrete insulating brick by utilizing the construction waste is prepared by the following steps in sequence:
(1) crushing the construction waste serving as the aggregate, screening, controlling the particle size to be less than 5mm, adding the aggregate, CaO, CaSO4 and carbamide into the cement according to the weight parts, and mixing and stirring to obtain a dry powder mixture;
(2) uniformly mixing polyvinyl alcohol, hydroxypropyl methylcellulose, calcium formate and added water according to the weight ratio, then mixing with the dry powder mixture in the step (1), and uniformly stirring to obtain mixture slurry;
(3) adding a foaming agent into the mixture slurry according to the weight part, uniformly stirring, injecting into a mold, hardening by the hydration heat of the mixture slurry, curing for 6 hours, and demolding;
(4) and (5) covering a plastic film after demoulding, and curing for 26 days in a greenhouse at the later stage to obtain a finished product.
Example 4
The non-autoclaved aerated concrete insulating brick produced by utilizing the construction waste is prepared from the following raw materials in parts by weight: 35 parts of cement, 30 parts of aggregate, 10 parts of CaO, 45 parts of CaSO, 5 parts of carbamide, 5 parts of polyvinyl alcohol, 10 parts of hydroxypropyl methyl cellulose, 5 parts of calcium formate and 6 parts of foaming agent; the cement is ordinary silicate, high-alumina cement, fly ash cement, alumina cement and aluminate cement; the aggregate is construction waste, and the granularity is less than or equal to 5 mm; the foaming agent comprises 4 parts of aluminum powder and 2 parts of sodium bicarbonate.
The method for producing the non-autoclaved aerated concrete insulating brick by utilizing the construction waste is prepared by the following steps in sequence:
(1) crushing the construction waste serving as the aggregate, screening, controlling the particle size to be less than 5mm, adding the aggregate, CaO, CaSO4 and carbamide into the cement according to the weight parts, and mixing and stirring to obtain a dry powder mixture;
(2) uniformly mixing polyvinyl alcohol, hydroxypropyl methylcellulose, calcium formate and added water according to the weight ratio, then mixing with the dry powder mixture in the step (1), and uniformly stirring to obtain mixture slurry;
(3) adding a foaming agent into the mixture slurry according to the weight part, uniformly stirring, injecting into a mold, hardening by the hydration heat of the mixture slurry, maintaining for 4 hours, and demolding;
(4) and (5) covering a plastic film after demoulding, and curing for 28 days in a greenhouse at the later stage to obtain a finished product.
Claims (2)
1. The utility model provides an utilize building rubbish production to exempt from to steam and cure concrete aerated insulating brick which characterized in that: the feed is prepared from the following raw materials in parts by weight: 30-40 parts of cement, 20-30 parts of aggregate, 8-10 parts of CaO, 43-5 parts of CaSO, 3-5 parts of carbamide, 3-5 parts of polyvinyl alcohol, 5-10 parts of hydroxypropyl methyl fiber, 3-5 parts of calcium formate, 5-10 parts of foaming agent and 40-60 parts of external water;
the cement is one or more of common silicate, high alumina cement, fly ash cement, alumina cement and aluminate cement; the aggregate is construction waste, and the granularity is less than or equal to 5 mm; the foaming agent is one or more of aluminum powder, aluminum powder paste, hydrogen peroxide and sodium bicarbonate.
2. The method for producing the non-autoclaved aerated concrete insulating brick by using the construction waste of claim 1 is characterized by comprising the following steps:
(1) crushing and screening aggregate, controlling the particle size to be below 5mm, adding the aggregate, CaO, CaSO4 and carbamide into the cement according to the weight parts, and mixing and stirring to obtain a dry powder mixture;
(2) uniformly mixing polyvinyl alcohol, hydroxypropyl methylcellulose, calcium formate and added water according to the weight ratio, then mixing with the dry powder mixture in the step (1), and uniformly stirring to obtain mixture slurry;
(3) adding a foaming agent into the mixture slurry according to the weight part, uniformly stirring, injecting into a mold, hardening by the hydration heat of the mixture slurry, maintaining for 2-8 hours, and demolding;
(4) and (5) after demoulding, covering a plastic film, and curing for 20-30 days in a greenhouse to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360194.0A CN111187093A (en) | 2018-11-15 | 2018-11-15 | Non-autoclaved concrete aerated insulating brick produced by utilizing construction waste and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360194.0A CN111187093A (en) | 2018-11-15 | 2018-11-15 | Non-autoclaved concrete aerated insulating brick produced by utilizing construction waste and production method thereof |
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| Publication Number | Publication Date |
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| CN111187093A true CN111187093A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811360194.0A Withdrawn CN111187093A (en) | 2018-11-15 | 2018-11-15 | Non-autoclaved concrete aerated insulating brick produced by utilizing construction waste and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010513A (en) * | 2021-12-29 | 2022-09-06 | 贺州学院 | Cement-based porous acoustic board and preparation method thereof |
-
2018
- 2018-11-15 CN CN201811360194.0A patent/CN111187093A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115010513A (en) * | 2021-12-29 | 2022-09-06 | 贺州学院 | Cement-based porous acoustic board and preparation method thereof |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20200522 |