CN108424094A - A kind of building waste/alkaline residue base autoclave aerated concrete building block and preparation method thereof - Google Patents
A kind of building waste/alkaline residue base autoclave aerated concrete building block and preparation method thereof Download PDFInfo
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- CN108424094A CN108424094A CN201810397523.2A CN201810397523A CN108424094A CN 108424094 A CN108424094 A CN 108424094A CN 201810397523 A CN201810397523 A CN 201810397523A CN 108424094 A CN108424094 A CN 108424094A
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- 239000002699 waste material Substances 0.000 title claims abstract description 52
- 239000004567 concrete Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims description 17
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 12
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 12
- 239000004571 lime Substances 0.000 claims abstract description 12
- 239000004411 aluminium Substances 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 239000010440 gypsum Substances 0.000 claims abstract description 10
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 14
- 238000000498 ball milling Methods 0.000 claims description 9
- 239000011449 brick Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 239000012467 final product Substances 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 7
- 238000010025 steaming Methods 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- -1 alkaline residue Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 238000005266 casting Methods 0.000 abstract description 6
- 230000015271 coagulation Effects 0.000 abstract description 2
- 238000005345 coagulation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 239000000499 gel Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000002585 base Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000000643 oven drying Methods 0.000 description 6
- 235000015110 jellies Nutrition 0.000 description 5
- 239000008274 jelly Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 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
- 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
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of method preparing autoclave aerated concrete building block using building waste and alkaline residue, the air entrained concrete includes according to mass percent component：Building waste 43 63%, alkaline residue 15 25%, lime 5 15%, cement 15 20%, gypsum 1 3%, aluminium powder 0.1%, ratio of water to material 0.55 stir evenly rear moulding by casting, then obtain autoclave aerated concrete building block through steam press maintenance.Contain a large amount of sial in building waste of the present invention, activated by alkaline residue, CSH gels, the performance that prepared air-entrained concrete building block has high-strength, lightweight, heat preservation, frost resistance strong can be formed during steam pressure, property indices reach GB11968 2006《Steam pressurized coagulation scholar building block standard》In A7.5B07 requirements, provide new way for what building waste and alkaline residue recycled.
Description
Technical field
The invention belongs to building material technical fields, and in particular to a kind of steam pressurized mixed using building waste/alkaline residue base
Solidifying earth building blocks and preparation method thereof.
Background technology
China's construction refuse resource degree is well below developed countries, the utilization for building waste, most of
It is confined to simple process, a large amount of building waste is not utilized effectively, and not only wastes resource, but also polluted environment.China
The quantity of building waste has accounted for 1/3 of municipal refuse total amount or more.Also illustrate from another point of view, China's construction refuse resource
The potentiality of comprehensive utilization are very big, if will be a kind of inexpensive raw material as waste utilization.
Solid waste of the alkaline residue as soda industry, a large amount of stockpilings have seriously affected the development of alkali factory, and each alkali factory is
Through that must be solved the problems, such as using the comprehensive utilization of alkaline residue as sustainable Green Development.The main component of alkaline residue is calcium carbonate, sulphur
Sour calcium, calcium chloride are at present utilized as the processing of alkaline residue.
Both above-mentioned building, industrial refuse are not utilized preferably, and environmental protection and recycling are unfavorable for.
Invention content
In order to solve the above technical problem, the present invention provides a kind of building waste/alkaline residue base autoclave aerated concrete building blocks
And preparation method thereof.
The present invention excites the sial in building waste using alkaline residue, is built with improving using building waste and alkaline residue as raw material
Building refuse-alkaline residue compressive strength of aerated autoclaved concrete blocks.The primary raw material of this formula is solid waste, other raw material types are less
And be conventional lower-cost chemicals, be conducive to cost control.There is height using concrete segment prepared by this method
By force, lightweight, it is freeze proof, heat preservation performance, after tested its performance indicator belong to the high-class product in national standard, realize solid waste resource
Change, purpose that is environmentally friendly and reducing cost.
Scheme provided by the invention is as follows.
A kind of building waste/alkaline residue base air-entrained concrete building block, the siccative for preparing raw material include by mass percentage：It builds
Building refuse building waste building waste 43-63%, alkaline residue 15-25%, lime 5-15%, cement 15-20%, gypsum 1-3%, aluminium
Powder 0.1%.
A kind of method of building waste/alkaline residue base air-entrained concrete building block, includes the following steps：
(1) building waste is pulverized and sieved obtained by rear ball milling 20min；
(2) building waste, alkaline residue, lime, cement, gypsum, aluminium powder are mixed and made into siccative, water is compared with quality：Siccative is
0.55：1 addition water simultaneously stirs, then the slurry after stirring is stood；
(3) slurry is poured into mold and is poured into a mould, be put into baking oven conserve after the completion, then demoulded, obtain building block；
(4) building block is put into progress steam pressure in pressure steaming kettle and obtains steamed building blocks；
(5) it by steamed building blocks natural cooling, is subsequently placed in constant temperature oven drying to obtain the final product.
Building waste is made of discarded concrete, useless brick and tile, barren rock block in above-mentioned steps (1).
Building waste in above-mentioned steps (1) is ball milling 20min gained after smashing it through 60 mesh screen residues.
Alkaline residue in above-mentioned steps (2) is industrial soda-manufacturing waste residue, and main component is calcium carbonate, calcium sulfate, calcium chloride.
The efficient oxidation calcium of lime is not less than 80% in above-mentioned steps (2).
Cement is 4.5 grades of portland cements in above-mentioned steps (2).
Oven temperature is 65 DEG C in above-mentioned steps (3), curing time 4h.
Autoclaved condition is 1.5MPa, 6h in above-mentioned steps (4).
Advantageous effect of the invention：
1. using building waste and alkaline residue as raw material, it is good for the environment, changing rejected material to useful resource and reduces cost；
2. the activity excitation significant effect of alkaline residue, prepared concrete segment density is low, compression strength is big, dry contraction
Coefficient is low, frost resistance is strong, thermal coefficient is small, meets standard GB/T 11968-2006 after tested《Steam pressurized coagulation scholar building block
Standard》A7.5B07 requirement.
Specific implementation mode
With reference to specific embodiment, the present invention is further described, and present disclosure is completely without being limited thereto.
Embodiment 1
Preparation method is as follows：
(1) it uses discarded concrete, useless brick and tile, barren rock block as building waste, crushed ball milling 20min institutes after 60 mesh sieve
；
(2) by building waste 43Kg, alkaline residue 25Kg, lime 15Kg, cement 15Kg, gypsum 1.9Kg, aluminium powder 0.1Kg are placed in
Siccative is made in stirring at low speed 2min in blender, adds 55Kg to carry out wet mixing, then the slurry after stirring is stood 30min；
(3) slurry is poured into mold, the sample after casting complete is put into 65 DEG C of baking oven and conserves 4h, then sample
It is demoulded, obtains air-entrained concrete building block；
(4) building block is put into pressure steaming kettle and obtains steamed building blocks in 1.5MPa steam pressures 6h；
(5) it by steamed building blocks natural cooling, is subsequently placed in constant temperature oven drying to obtain the final product.
After tested, the performance test results are as follows：
Compression strength 6.76MPa, dry density 653Kg/m3, drying shrinkage value 0.16, mass loss 0.12% after jelly, heat conduction
Coefficient 0.05W/ (mK).
The GB11968-2006 the result shows that concrete segment prepared by embodiment 1 is up to state standards《It is steam pressurized mixed
Solidifying scholar's building block standard》The requirement of A5.0B07.
Embodiment 2
Preparation method is as follows：
(1) it uses discarded concrete, useless brick and tile, barren rock block to be used as building waste, crushed after 60 mesh sieve 20min after ball milling
Gained；
(2) by building waste 48Kg, alkaline residue 19.9Kg, lime 10Kg, cement 20Kg, gypsum 2Kg, aluminium powder 0.1Kg are placed in
Siccative is made in stirring at low speed 2min in blender, adds 55Kg to carry out wet mixing, then the slurry after stirring is stood 30min；
(3) slurry is poured into mold, the sample after casting complete is put into 65 DEG C of baking oven and conserves 4h, then sample
It is demoulded, obtains air-entrained concrete building block；
(4) building block is put into pressure steaming kettle and obtains steamed building blocks in 1.5MPa steam pressures 6h；
(5) it by steamed building blocks natural cooling, is subsequently placed in constant temperature oven drying to obtain the final product.
After tested, the performance test results are as follows：
Compression strength 7.68MPa, dry density 674Kg/m3, drying shrinkage value 0.15, mass loss 0.09% after jelly, heat conduction
Coefficient 0.07W/ (mK).
The GB11968-2006 the result shows that concrete segment prepared by embodiment 1 is up to state standards《It is steam pressurized mixed
Solidifying scholar's building block standard》The requirement of A5.0B07.
Embodiment 3
Preparation method is as follows：
(1) it uses discarded concrete, useless brick and tile, barren rock block as building waste, crushed ball milling 20min institutes after 60 mesh sieve
；
(2) by building waste 53Kg, alkaline residue 17Kg, lime 10Kg, cement 18.9Kg, gypsum 1Kg, aluminium powder 0.1Kg are placed in
Siccative is made in stirring at low speed 2min in blender, adds 55Kg to carry out wet mixing, then the slurry after stirring is stood 30min；By slurry
It pours into mold, the sample after casting complete is put into 65 DEG C of baking oven and conserves 4h, then sample is demoulded, and obtains aerating
Concrete segment；
(3) building block is put into pressure steaming kettle and obtains steamed building blocks in 1.5MPa steam pressures 6h；
(4) it by steamed building blocks natural cooling, is subsequently placed in constant temperature oven drying to obtain the final product.
After tested, the performance test results are as follows：
Compression strength 6.54MPa, dry density 686Kg/m3, drying shrinkage value 0.12, mass loss 0.11% after jelly, heat conduction
Coefficient 0.08W/ (mK).
The GB11968-2006 the result shows that concrete segment prepared by embodiment 1 is up to state standards《It is steam pressurized mixed
Solidifying scholar's building block standard》The requirement of A5.0B07.
Embodiment 4
Preparation method is as follows：
(1) it uses discarded concrete, useless brick and tile, barren rock block as building waste, crushed ball milling 20min institutes after 60 mesh sieve
；
(2) by building waste 58Kg, alkaline residue 17Kg, lime 5.9Kg, cement 16Kg, gypsum 3Kg, aluminium powder 0.1Kg, which is placed in, to be stirred
It mixes stirring at low speed 2min in machine and siccative is made, add 55Kg to carry out wet mixing, then the slurry after stirring is stood 30min；
(3) slurry is poured into mold, the sample after casting complete is put into 65 DEG C of baking oven and conserves 4h, then sample
It is demoulded, obtains air-entrained concrete building block；
(4) building block is put into pressure steaming kettle and obtains steamed building blocks in 1.5MPa steam pressures 6h；
(5) it by steamed building blocks natural cooling, is subsequently placed in constant temperature oven drying to obtain the final product.
After tested, the performance test results are as follows：
Compression strength 6.12MPa, dry density 688Kg/m3, drying shrinkage value 0.14, mass loss 0.16% after jelly, heat conduction
Coefficient 0.06W/ (mK).
The GB11968-2006 the result shows that concrete segment prepared by embodiment 1 is up to state standards《It is steam pressurized mixed
Solidifying scholar's building block standard》The requirement of A5.0B07.
Embodiment 5
Preparation method is as follows：
(1) it uses discarded concrete, useless brick and tile, barren rock block as building waste, crushed ball milling 20min institutes after 60 mesh sieve
；
(2) by building waste 63Kg, alkaline residue 15Kg, lime 5Kg, cement 15Kg, gypsum 1.9Kg, aluminium powder 0.1Kg, which is placed in, to be stirred
It mixes stirring at low speed 2min in machine and siccative is made, add 55Kg to carry out wet mixing, then the slurry after stirring is stood 30min；；
(3) slurry is poured into mold, the sample after casting complete is put into 65 DEG C of baking oven and conserves 4h, then sample
It is demoulded, obtains air-entrained concrete building block；
(4) building block is put into pressure steaming kettle and obtains steamed building blocks in 1.5MPa steam pressures 6h；
(5) it by steamed building blocks natural cooling, is subsequently placed in constant temperature oven drying to obtain the final product.
After tested, the performance test results are as follows：
Compression strength 5.88MPa, dry density 698Kg/m3, drying shrinkage value 0.16, mass loss 0.18% after jelly, heat conduction
Coefficient 0.07W/ (mK).
The GB11968-2006 the result shows that concrete segment prepared by embodiment 1 is up to state standards《It is steam pressurized mixed
Solidifying scholar's building block standard》The requirement of A5.0B07.
To sum up, the preparation method of building waste provided by the invention/alkaline residue base autoclave aerated concrete building block, it is determined that complete
New formula, and a large amount of building waste and alkaline residue are applied as raw material；Prepared concrete segment intensity is big, density
It is low, drying shrinkage value is low, frost resistance is strong, and meet national standard, be a kind of construction material of environmental protection.
The foregoing is only a preferred embodiment of the present invention, but the scope of protection of the invention be not limited thereto,
Any modification that any one skilled in the art is made in the technical scope disclosed by the present invention, equivalent replacement and
Improve etc., it should be included within the protection domain of invention.
Claims (9)
1. a kind of building waste/alkaline residue base air-entrained concrete building block, which is characterized in that it prepares the siccative of raw material by quality percentage
Than including：Building waste 43-63%, alkaline residue 15-25%, lime 5-15%, cement 15-20%, gypsum 1-3%, aluminium powder
0.1%.
2. a kind of method preparing building waste described in claim 1/alkaline residue base air-entrained concrete building block, which is characterized in that
Include the following steps：
(1) building waste is pulverized and sieved after rear ball milling obtained by 20min；
(2) building waste, alkaline residue, lime, cement, gypsum, aluminium powder are mixed and made into siccative, water is compared with quality：Siccative is 0.55：
1 addition water simultaneously stirs, then the slurry after stirring is stood；
(3) slurry is poured into mold and is poured into a mould, be put into baking oven conserve after the completion, then demoulded, obtain building block；
(4) building block is put into progress steam pressure in pressure steaming kettle and obtains steamed building blocks；
(5) it by steamed building blocks natural cooling, is subsequently placed in constant temperature oven to obtain the final product.
3. the preparation method of building waste according to claim 2/alkaline residue base air-entrained concrete building block, it is characterised in that：
Building waste is discarded concrete, useless brick and tile, barren rock block composition, wherein discarded concrete, useless brick and tile weight in the step (1)
Than being 80~100%.
4. the preparation method of building waste according to claim 2/alkaline residue base air-entrained concrete building block, it is characterised in that：
Building waste in the step (1) is ball milling 20min gained after smashing it through 60 mesh screen residues.
5. the preparation method of building waste according to claim 2/alkaline residue base air-entrained concrete building block, it is characterised in that：
Alkaline residue in the step (2) is industrial soda-manufacturing waste residue, and composition includes mainly calcium carbonate, calcium sulfate and calcium chloride.
6. the preparation method of building waste according to claim 2/alkaline residue base air-entrained concrete building block, it is characterised in that：
The efficient oxidation calcium of lime is not less than 80% in the step (2).
7. the preparation method of building waste according to claim 2/alkaline residue base air-entrained concrete building block, it is characterised in that：
Cement is 42.5 grades of portland cements in the step (2).
8. the preparation method of building waste according to claim 2/alkaline residue base air-entrained concrete building block, it is characterised in that：
Oven temperature is 65 DEG C in the step (3), curing time 4h.
9. the preparation method of building waste according to claim 2/alkaline residue base air-entrained concrete building block, it is characterised in that：
Autoclaved condition is 1.5MPa, 6h in the step (4).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293328A (en) * | 2018-09-19 | 2019-02-01 | 贵州师范大学 | The production method of the steam pressurized lithium dreg concrete building block of light transmission |
| CN111187051A (en) * | 2020-01-16 | 2020-05-22 | 佛冈豪鑫环保建材有限公司 | Autoclaved aerated concrete block brick utilizing construction waste |
| CN112094087A (en) * | 2019-10-15 | 2020-12-18 | 上海市建筑科学研究院有限公司 | Tailing sand autoclaved and block-added substitute and preparation method thereof |
| CN112239370A (en) * | 2020-09-25 | 2021-01-19 | 安徽筑园景新型建材科技有限公司 | High-strength aerated concrete block and preparation method thereof |
| CN112723842A (en) * | 2021-01-07 | 2021-04-30 | 广州大学 | Autoclaved aerated concrete block and preparation method thereof |
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| CN102424604A (en) * | 2011-08-12 | 2012-04-25 | 刘应贵 | Method for producing gas-filled light building blocks by using alkaline residue |
| CN105152677A (en) * | 2015-09-08 | 2015-12-16 | 安徽筑园景新型建材科技有限公司 | Aerated concrete block and preparation method |
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| CN109293328A (en) * | 2018-09-19 | 2019-02-01 | 贵州师范大学 | The production method of the steam pressurized lithium dreg concrete building block of light transmission |
| CN112094087A (en) * | 2019-10-15 | 2020-12-18 | 上海市建筑科学研究院有限公司 | Tailing sand autoclaved and block-added substitute and preparation method thereof |
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| CN112239370A (en) * | 2020-09-25 | 2021-01-19 | 安徽筑园景新型建材科技有限公司 | High-strength aerated concrete block and preparation method thereof |
| CN112723842A (en) * | 2021-01-07 | 2021-04-30 | 广州大学 | Autoclaved aerated concrete block and preparation method thereof |
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Inventor after: Xu Kemeng Inventor after: Zhang Huiling Inventor after: Chen Yongliang Inventor after: Du Jinyang Inventor after: Wang Mengchan Inventor after: Chen Runze Inventor before: Xu Kemeng Inventor before: Zhang Huiling Inventor before: Chen Yongliang Inventor before: Du Jinyang Inventor before: Wang Mengchan Inventor before: Chen Runze |
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Application publication date: 20180821 |