CN108640635A - Cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate and preparation method thereof - Google Patents
Cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate and preparation method thereof Download PDFInfo
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- CN108640635A CN108640635A CN201810595089.9A CN201810595089A CN108640635A CN 108640635 A CN108640635 A CN 108640635A CN 201810595089 A CN201810595089 A CN 201810595089A CN 108640635 A CN108640635 A CN 108640635A
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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
- C04B28/30—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 magnesium cements or similar 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
- 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
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The invention discloses a kind of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregates comprising the uniformly mixed each component with following mass content：93%~97% reclaimed concrete aggregate, 1.56%~3.12% magnesia, 0.57%~1.90% cinder powder, 0.76%~1.80% magnesium sulfate and 0.09%~0.18% water resistant additive.The invention also discloses the preparation methods of above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate.The cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the present invention has the characteristics that materials facility, energy conservation and environmental protection, is a kind of novel construction material；It largely utilizes the solid waste such as discarded concrete, cinder, bischofite, environmental protection and landed property caused by can solving the problems, such as discarded concrete, cinder and the sandstone and cement resource for alleviating worsening shortages, and the application range of magnesium oxysulfide concrete is expanded, there is far-reaching influence and wide application prospect；And its unconfined compressive strength meets code requirement, can accelerate the progress of construction.
Description
Technical field
The invention belongs to building material technical fields, it relates in particular to a kind of cinder powder magnesium oxysulfide concrete stable regeneration
Concrete aggregate and preparation method thereof.
Background technology
Every year, China's infrastructure construction needs hundreds billion of tons of sandstone material, causes " green hill hangs white, river water yellowing ",
Seriously affect the environment in China, at the same sand and stone resources be it is non-renewable, for environmental protection and limited sand and stone resources, urgently
It needs to replace sand and stone resources using other materials.Meanwhile there is several hundred million tons of discarded concrete air storage in China every year, that is, pollutes
Environment occupies a large amount of land resource again；Therefore discarded concrete regeneration becomes the research emphasis in China, to be effectively relieved
The pressure and concrete debris environmental pollution of natural aggregate shortage.
There is several hundred million tons of cinder air storage in China, at present only part for brickmaking, pave the way and cement mixture, but its
Utilization rate is low；Therefore, there is an urgent need for improve its utilization rate and utility value.
At the same time, China has abundant sulfuric acid magnesium resource, and magnesium sulfate resource reserve is about 16.73 hundred million in salt lake bittern
Ton, and magnesium sulfate reserves reach 3,570,000,000,000,000 tons in seawater.In general, brine of the seawater after carrying bromine, carrying potassium, by certainly
So crystallization can obtain magnesium sulfate.
To sum up, how by discarded concrete and cinder recycling and how to find the substitute of sandstone material at
For technical problem urgently to be resolved hurrily.
Invention content
To solve the above-mentioned problems of the prior art, the present invention provides the following technical solutions：
A kind of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate comprising uniformly mixed there is following quality to contain
The each component of amount：
Further, the reclaimed concrete aggregate by discarded concrete gather materials through it is broken, except muscle, sorting, screening, clear
It washes, dry acquisition.
Further, the reclaimed concrete aggregate by the grain size that mass percent is 5%~20% be 0.075mm~
Melon seeds piece that the grain size that rice sand, the mass percent of 5mm is 25%~35% is 5mm~13mm, mass percent be 25%~
The grain size that the small broken and mass percent that 40% grain size is 13mm~25mm is 5%~20% is broken in 25mm~40mm
Composition.
Further, the cinder powder is crossed 45 μm of negative pressure sieves after broken, drying, grinding by cinder and is obtained.
Further, the magnesia is not less than 80% light magnesium oxide powder, and the ratio table of the magnesia for purity
Area is 2.1m2/ kg~2.3m2/kg。
Further, the magnesium sulfate is magnesium sulfate monohydrate and/or epsom salt.
Further, it is 1 that the water resistant additive, which is mass ratio,:3:1 sodium dihydrogen phosphate, aluminum sulfate and ferric phosphate
Mixture.
Further, three days unconfined compressive strengths of the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate are extremely
It is less 5.6MPa, unconfined compressive strength is at least 6.5MPa within seven days.
Another object of the present invention is to provide a kind of as above any cinder powder magnesium oxysulfide concrete stable regeneration is mixed
The each component of following mass contents is uniformly mixed by the preparation method that solidifying soil gathers materials：
Further, the preparation method further includes into the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate
It adds water and carries out mix；Wherein, the quality of water is the quality of the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate
9.68%~12.7%.
Beneficial effects of the present invention：
(1) present invention is had found by studying：By discarded concrete it is broken be processed into performance and meet the regeneration of code requirement mix
Solidifying soil gathers materials；The present invention substitutes common natural material in the prior art using the reclaimed concrete aggregate as a result, can effectively delay
The pressure and concrete debris environmental pollution for solving natural aggregate shortage are to ensure effectively arranging for social sustainable development
One of apply；
(2) present invention is had found by studying：Cinder obtains after crossing 45 μm of negative pressure sieves after broken, drying, grinding 45min
Cinder powder, its pozzolanic activity of obtained cinder powder are better than II grade of flyash；The present invention substitutes existing skill using cinder powder as a result,
Mineral admixture in art can solve the problems, such as that cinder takes up an area and pollute environment, promote the utility value of cinder, can alleviate mineral
The present situation of admixture shortage；
(3) present invention realizes energy-saving and emission-reduction by the magnesium sulfate and magnesia of specific proportioning to form magnesium oxysulfide concrete,
" the magnesium evil " that can solve Salt Lake Area, improves the yield of potash fertilizer, farmland saving, while the application model of magnesium oxysulfide concrete has also been enlarged
It encloses；
(4) cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the invention has materials convenient, energy-saving and environment-friendly
Feature is a kind of novel construction material；The material can largely utilize the solids such as discarded concrete, cinder, bischofite useless
Gurry, environmental protection and landed property caused by can solving the problems, such as discarded concrete, cinder and the sandstone and water for alleviating worsening shortages
Mud resource, and the application range of magnesium oxysulfide concrete is expanded, the present invention has far-reaching influence and wide application prospect；
(5) proved by Practical Project, cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the invention without side
Limit compression strength meets code requirement, and can accelerate the progress of construction.
Specific implementation mode
Hereinafter, detailed description of the present invention embodiment in future.However, it is possible to implement this hair in many different forms
It is bright, and the present invention should not be construed as limited to the specific embodiment illustrated here.On the contrary, provide these embodiments be for
Explanation the principle of the present invention and its practical application, to make others skilled in the art it will be appreciated that the present invention's is various
Embodiment and the various modifications for being suitable for specific intended application.
The present invention provides a kind of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregates comprising uniformly mixed tool
There is each component of following mass content：
Specifically, reclaimed concrete aggregate be by discarded concrete gather materials through it is broken, except muscle, sorting, screening, cleaning,
Dry and acquisition, which has composition as shown in Table 1.
The composition of 1 reclaimed concrete aggregate of table
It is worth noting that when determining the concrete composition of above-mentioned reclaimed concrete aggregate, specifically need to according to it is final or
Forming method (the hitting real or vibration) experiment of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate and unconfined compressive strength
Requirement, to select best proportioning.
Further, above-mentioned discarded concrete gathers materials including excavating concrete slab, discarded building construction or bridge structure
One or more of discarded concretes such as part, concrete test block and component；Also, reclaimed concrete aggregate root of the present invention
According to《Highway road surface construction technique normalizing》(JTJ034-2000) grading requirement, it is desirable that its crush values is no more than 30%.
More specifically, cinder powder is to cross 45 μm of negative pressure sieves after broken, drying, grinding by cinder to obtain；Magnesia
It is not less than 80% light magnesium oxide powder for purity, and its specific surface area is 2.1m2/ kg~2.3m2/kg；Magnesium sulfate can be work
Industry magnesium sulfate and/or bischofite；And it is 1 that water resistant additive, which is mass ratio,:3:1 sodium dihydrogen phosphate, aluminum sulfate and ferric phosphate
The compound water repellent agent of AK types of mixture namely Aladdin chemical reagent work.
Three days non-confining strengths of above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate provided by the invention
Degree is at least 5.6MPa, and unconfined compressive strength is at least 6.5MPa within seven days；When not carrying out engineering test, generally also need to survey
Fixed 28 days respective performances meet highway and use function secondly 18 days unconfined compressive strengths are at least 8.2MPa
Requirement.
The preparation method of above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate according to the present invention is simple for process,
It is easy to prepare, it is only necessary to be uniformly mixed each component of above-mentioned mass content.
Understood by one of ordinary skill in the art to be, for cement concrete type product, product is either above-mentioned
Dry powder (block) shape of description, and can be that state is formed by after water mix, in general, only by water mix after, side
The correlated performance of the coagulating cement native produce can be measured；For this purpose, the above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration coagulation of the present invention
Soil gathers materials i.e. when with water mix, and wherein magnesia, magnesium sulfate and water resistant additive can form magnesium oxysulfide concrete, show compared with
The superior performance of traditional portland cement.At the same time, for magnesium oxysulfide concrete, dosage (the i.e. water of mixing water
With magnesia and/or the relative usage of magnesium sulfate, it being commonly called as the ratio of mud) influence for final products performance is great；For this purpose, being directed to
The above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the present invention is generally determined preferably thereto by vibration test
It adds 9.68%~12.7% water that quality is cinder powder magnesia oxychloride cement stable regeneration concrete aggregate quality and carries out mix,
So that it shows excellent using effect.
It will illustrate the above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration concrete of the present invention by specific embodiment below
Gather materials and its preparation method and application performance, but it will be appreciated by those skilled in the art that following embodiments are only of the invention
Specific example, different from limiting its whole technical solution.
Embodiment 1
First, by following technique productions reclaimed concrete aggregates.
Specifically, discarded Cement Concrete Pavement Slab, the component of demolition of buildings, discarded cement concrete are tried
The centralized recoveries such as block；The discarded concrete of recycling is carried out to primary fragmentation successively, obtains institute except muscle, second-time breakage, by screening
Need the reclaimed concrete aggregate of particle size range；The mass percent such as table that the reclaimed concrete aggregate obtained passes through following sieve pore
Shown in 2.
The content that 2 reclaimed concrete aggregate of table passes through each sieve pore
The crush values of gained reclaimed concrete aggregate are 22.6%, apparent density 2.69g/cm3。
By screening result in above-mentioned table 2 by 33.4% meter of sand, 29.2% melon seeds piece, 23.5% it is small it is broken, in 13.9% it is broken
Mass ratio mixes, and obtains reclaimed concrete aggregate.
Then, using the cinder powder of index listed by table 3.
3 cinder powder index of table
Finally, it is 1.56 by the mass ratio of magnesia, cinder powder, magnesium sulfate, water resistant additive, reclaimed concrete aggregate:
0.57:0.78:0.09:97 each ingredients of mixing.
In the present embodiment, it is 1 that water resistant additive, which is mass ratio,:3:1 sodium dihydrogen phosphate, aluminum sulfate and ferric phosphate it is mixed
Close object；Magnesia is the light magnesium oxide powder that purity is not less than 80%, and its specific surface area is 2.1m2/ kg~2.3m2/kg；Sulphur
Sour magnesium is industrial sulphuric acid magnesium.
In order to verify the performance of above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate, pass through vibration test
Determining maximum dry density and optimum moisture content adds cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate thereto
9.68% tap water of quality carries out mix, and the unconfined compressive strength for measuring its 3d, 7d and 28d age respectively is respectively
5.85MPa, 6.67MPa and 8.22MPa.
Embodiment 2
First, by following technique productions reclaimed concrete aggregates.
Specifically, discarded Cement Concrete Pavement Slab, the component of demolition of buildings, discarded cement concrete are tried
The centralized recoveries such as block；The discarded concrete of recycling is carried out to primary fragmentation successively, obtains institute except muscle, second-time breakage, by screening
Need the reclaimed concrete aggregate of particle size range；The mass percent such as table that the reclaimed concrete aggregate obtained passes through following sieve pore
Shown in 4.
The content that 4 reclaimed concrete aggregate of table passes through each sieve pore
The crush values of gained reclaimed concrete aggregate are 24.6%, apparent density 2.72g/cm3。
By screening result in above-mentioned table 4 by 35.6% meter of sand, 18.7% melon seeds piece, 25.6% it is small it is broken, in 20.1% it is broken
Mass ratio mixes, and obtains reclaimed concrete aggregate.
Then, using the cinder powder of index, magnesia as listed by table 3 in embodiment 1, by itself and water resistant additive, regeneration
Concrete aggregate is mixed according to mass ratio in the same manner as in Example 1.
In the present embodiment, it is 1 that water resistant additive, which is specially mass ratio,:3:1 sodium dihydrogen phosphate, aluminum sulfate and ferric phosphate
Mixture；Magnesia is the light magnesium oxide powder that purity is not less than 80%, and its specific surface area is 2.1m2/ kg~2.3m2/
kg；Magnesium sulfate is bischofite.
In order to verify the performance of above-mentioned cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate, pass through vibration test
Determining maximum dry density and optimum moisture content adds cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate thereto
10.16% tap water of quality carries out mix, and the unconfined compressive strength for measuring its 3d, 7d and 28d age respectively is respectively
5.63MPa, 6.53MPa and 8.34MPa.
Embodiment 3
In the description of embodiment 3, details are not described herein with the something in common of embodiment 1, only describes with embodiment 1 not
Same place.Embodiment 3 difference from example 1 is that, according to magnesia, cinder powder, magnesium sulfate, water resistant additive, again
The mass ratio that growing concrete gathers materials is 2.08:0.76:1.04:0.12:96 each substances of mixing；Remaining is obtained with reference to described in embodiment 1
Obtain the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the present embodiment.
Using identical assay method in same embodiment 1 to the cinder powder magnesium oxysulfide concrete stable regeneration coagulation of the present embodiment
The performance that soil gathers materials is determined.The maximum dry density and optimum moisture content determined by vibration test, thereto
10.68% tap water for adding the quality of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate carries out mix, surveys respectively
The unconfined compressive strength of its fixed 3d, 7d and 28d age is respectively 6.24MPa, 7.13MPa and 8.84MPa.
Embodiment 4
In the description of embodiment 4, details are not described herein with the something in common of embodiment 2, only describes with embodiment 2 not
Same place.Embodiment 4 and embodiment 2 the difference is that, according to magnesia, cinder powder, magnesium sulfate, water resistant additive, again
The mass ratio that growing concrete gathers materials is 2.6:0.95:1.30:0.15:95 each substances of mixing；Remaining is obtained with reference to described in embodiment 2
Obtain the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the present embodiment.
Using identical assay method in same embodiment 2 to the cinder powder magnesium oxysulfide concrete stable regeneration coagulation of the present embodiment
The performance that soil gathers materials is determined.Maximum dry density (the 2.04g/cm determined by vibration test3) and most preferably contain
Water (10.8%) adds oneself of 11.16% of the quality of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate thereto
Water carry out mix, the unconfined compressive strength for measuring its 3d, 7d and 28d age respectively be respectively 7.58MPa, 8.21MPa and
9.16MPa。
Embodiment 5
In the description of embodiment 5, details are not described herein with the something in common of embodiment 2, only describes with embodiment 2 not
Same place.Embodiment 5 and embodiment 2 the difference is that, according to magnesia, cinder powder, magnesium sulfate, water resistant additive, again
The mass ratio that growing concrete gathers materials is 2.80:1.22:1.80:0.18:94 each substances of mixing；Remaining is obtained with reference to described in embodiment 2
Obtain the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the present embodiment.
Using identical assay method in same embodiment 2 to the cinder powder magnesium oxysulfide concrete stable regeneration coagulation of the present embodiment
The performance that soil gathers materials is determined.The maximum dry density and optimum moisture content determined by vibration test, thereto
11.78% tap water for adding the quality of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate carries out mix, surveys respectively
The unconfined compressive strength of its fixed 3d, 7d and 28d age is respectively 8.86MPa, 9.64MPa and 10.83MPa.
Embodiment 6
In the description of embodiment 6, details are not described herein with the something in common of embodiment 2, only describes with embodiment 2 not
Same place.Embodiment 6 and embodiment 2 the difference is that, according to magnesia, cinder powder, magnesium sulfate, water resistant additive, again
The mass ratio that growing concrete gathers materials is 1.85:1.90:1.10:0.15:95 each substances of mixing；Remaining is obtained with reference to described in embodiment 2
Obtain the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate of the present embodiment.
Using identical assay method in same embodiment 2 to the cinder powder magnesium oxysulfide concrete stable regeneration coagulation of the present embodiment
The performance that soil gathers materials is determined.The maximum dry density and optimum moisture content determined by vibration test, thereto
11.54% tap water for adding the quality of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate carries out mix, surveys respectively
The unconfined compressive strength of its fixed 3d, 7d and 28d age is respectively 5.84MPa, 7.18MPa and 8.68MPa.
Embodiment 7
The present embodiment is engineering test, and design standard is Class II highway.
The present embodiment technique equally described in embodiment 1 processes concrete debris panel, to obtain regeneration concrete
Gather materials；The reclaimed concrete aggregate obtained is as shown in table 5 by the mass percent of following sieve pore.
The content that 5 reclaimed concrete aggregate of table passes through each sieve pore
The crush values of gained reclaimed concrete aggregate are 20.8%, apparent density 2.54g/cm3。
Screening result in above-mentioned table 5 is mixed by 40% meter of sand, 29% melon seeds piece, 10% small broken, broken in 21% mass ratio
It closes, obtains reclaimed concrete aggregate.
Using magnesium sulfate, magnesia and cinder powder (SiO2、Al2O3、Fe2O3Gross mass percentage be not less than 70%, and burn
Vector is not less than 10%) preparation cinder powder magnesium oxysulfide concrete reclaimed concrete aggregate.
In this engineering test, cinder powder magnesium oxysulfide concrete reclaimed concrete aggregate uses following two groups of proportionings：
1st group：By magnesia, cinder powder, magnesium sulfate, water resistant additive (mass ratio 1:3:1 sodium dihydrogen phosphate, sulphur
The mixture of sour aluminium and ferric phosphate), the mass ratio of reclaimed concrete aggregate be 1.56:1.56:0.76:0.12:96 mixing it is each at
Point；Pass through vibration moulding, maximum dry density 2.03g/cm3, optimum moisture content 11.9%, thereto add cinder powder sulphur
12.6% tap water of the quality of oxygen magnesium cement stabilizing reclaimed concrete aggregate carries out mix；The nothing of its test specimen 3d and 7d ages
Confined compressive strength is respectively 5.71MPa, 6.69MPa, and test section measured deflection is 9 × 10-2Mm~16 × 10-2mm
(BZZ-100)。
2nd group：By magnesia, cinder powder, magnesium sulfate, water resistant additive (mass ratio 1:3:1 sodium dihydrogen phosphate, sulphur
The mixture of sour aluminium and ferric phosphate), the mass ratio of reclaimed concrete aggregate be 1.95:1.90:1.00:0.15:95 mixing it is each at
Point；Pass through vibration moulding, maximum dry density 2.07g/cm3, optimum moisture content 12.1%, thereto add cinder powder sulphur
12.6% tap water of the quality of oxygen magnesium cement stabilizing reclaimed concrete aggregate carries out mix；The nothing of its test specimen 3d and 7d ages
Confined compressive strength is respectively 6.54MPa, 8.31MPa, and test section measured deflection is 7 × 10-2Mm~15 × 10-2mm
(BZZ-100)。
Although the present invention has shown and described with reference to specific embodiment, it should be appreciated by those skilled in the art that：
In the case where not departing from the spirit and scope of the present invention limited by claim and its equivalent, can carry out herein form and
Various change in details.
Claims (10)
1. a kind of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate, which is characterized in that including be uniformly mixed have with
The each component of lower mass content：
2. cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate according to claim 1, which is characterized in that it is described again
Growing concrete, which gathers materials, to be gathered materials by discarded concrete through being crushed, except muscle, sorting, screening, cleaning, dry acquisition.
3. cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate according to claim 2, which is characterized in that it is described again
Rice sand that the grain size that it is 5%~20% by mass percent that growing concrete, which gathers materials, is 0.075mm~5mm, mass percent are
The grain size that melon seeds piece that 25%~35% grain size is 5mm~13mm, mass percent are 25%~40% is 13mm~25mm
Small broken and mass percent be 5%~20% grain size be broken composition in 25mm~40mm.
4. cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate according to claim 1, which is characterized in that the coal
Ground-slag is crossed 45 μm of negative pressure sieves after broken, drying, grinding by cinder and is obtained.
5. cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate according to claim 1, which is characterized in that the oxygen
It is the light magnesium oxide powder that purity is not less than 80% to change magnesium, and the specific surface area of the magnesia is 2.1m2/ kg~2.3m2/kg。
6. cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate according to claim 1, which is characterized in that the sulphur
Sour magnesium is magnesium sulfate monohydrate and/or epsom salt.
7. cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate according to claim 1, which is characterized in that described anti-
Water additive is that mass ratio is 1:3:1 sodium dihydrogen phosphate, the mixture of aluminum sulfate and ferric phosphate.
8. according to any cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregates of claim 1-7, which is characterized in that
Three days unconfined compressive strengths of the cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate are at least 5.6MPa, seven days nothings
Confined compressive strength is at least 6.5MPa.
9. a kind of preparation side of cinder powder magnesium oxysulfide concrete stable regeneration concrete aggregate as described in claim 1-8 is any
Method, which is characterized in that be uniformly mixed each component of following mass contents：
10. preparation method according to claim 9, which is characterized in that the preparation method further includes to the cinder powder
Water is added in magnesium oxysulfide concrete stable regeneration concrete aggregate carries out mix；Wherein, the quality of water is the cinder powder magnesium oxysulfide
The 9.68%~12.7% of the quality of cement stabilizing reclaimed concrete aggregate.
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| CN113788666A (en) * | 2021-10-12 | 2021-12-14 | 江西秀川科技有限公司 | Super early strength recycled concrete and preparation method thereof |
| CN114524658A (en) * | 2022-03-22 | 2022-05-24 | 辽宁科大中驰镁建材科技有限公司 | Preparation method of ferric phosphate magnesium oxysulfate composite cement-based 3D printing material |
| ES2933749A1 (en) * | 2021-05-21 | 2023-02-13 | Univ Burgos | HIGH STRENGTH AND LOW SHRINKAGE SUSTAINABLE CONCRETE AND ITS PRODUCTION PROCEDURE (Machine-translation by Google Translate, not legally binding) |
| CN116239342A (en) * | 2022-12-07 | 2023-06-09 | 山东高速舜通路桥工程有限公司 | Water stable material for road subgrade and preparation method thereof |
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