CN109942255A - A kind of regeneration concrete and preparation method thereof - Google Patents
A kind of regeneration concrete and preparation method thereof Download PDFInfo
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- CN109942255A CN109942255A CN201910296488.XA CN201910296488A CN109942255A CN 109942255 A CN109942255 A CN 109942255A CN 201910296488 A CN201910296488 A CN 201910296488A CN 109942255 A CN109942255 A CN 109942255A
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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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Abstract
The invention discloses a kind of regeneration concretes, by weight, it is mixed to prepare by following components: 265-305 parts of cement, 605-675 parts of rubble, 450-510 parts of modification regeneration aggregate, 680-735 parts of sand, 65-90 parts of flyash, 4-7 parts of water-reducing agent, 135-180 parts of water；Modification regeneration aggregate processing includes: S1, takes out after recycled aggregate raw material is impregnated 20-30min in the calcium hydroxide solution that mass fraction is 5-10%, obtains the recycled aggregate A that surface is attached with calcium hydroxide solution；S2, recycled aggregate A and carbon dioxide gas haptoreaction 15-20min, obtain recycled aggregate B；S3 prepares the sodium fluoride solution that mass fraction is 0.4-0.6%, sodium hydroxide solution is added while stirring, until the pH value of mixed liquor is 6-6.5, later, the kaolin that mass fraction is 12-16% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；Recycled aggregate B is impregnated in enhancement solution C 1-3h, takes out drying, obtain modification regeneration aggregate by S4；The present invention improves the shock resistance and cleavage strength of concrete, alleviates the cracking phenomena of concrete.
Description
Technical field
The present invention relates to the technical field of concrete, in particular to a kind of regeneration concrete and preparation method thereof.
Background technique
The demand and application maximum of concrete in construction projects, and in concrete, the accounting of aggregate is again maximum, aggregate
Account for about the 60-70% of concrete material total volume.Currently, natural aggregate is natural sand stone, however, for a long time, because of city
The random mining of development construction application concrete bring natural sand stone resource causes massif vegetation deterioration, river damage etc. and asks
Topic.
On the other hand, it with the development of Process of Urbanization Construction, is rebuild along with the renovation of the buildings such as house, large amount of building
It is removed, at the same time, generates a large amount of discarded concrete building waste.If discarded concrete building rubbish cannot be made proper arrangements
Rubbish is piled up arbitrarily, and the ecological problems such as environmental degradation will be brought, moreover, and the waste to discarded concrete resource.
So using discarded concrete building waste as recycled aggregate development and application in regeneration concrete, on the one hand, can
To reduce consumption of the construction industry to rubble, to reduce the exploitation to natural sand stone, preserve the ecological environment；On the other hand, can
The problems such as solving a large amount of discarded concrete processing difficulties and worsening ecological environment resulting from.
Different from natural aggregate, recycled aggregate made of discarded concrete building waste includes green bone material, green bone material it is outer
Portion is partly or entirely coated with old mortar, and the outer surface of green bone material and the outer surface of old mortar have a large amount of hole, not only
So that the structural strength of recycled aggregate itself reduces, moreover, after incorporation concrete, green bone material and new mortar, old mortar and fresh sand
Interface cohesion between slurry is more weak, and concrete is caused to be easy to appear cracking phenomena.
Summary of the invention
In view of the shortcomings of the prior art, the purpose of the present invention one is: a kind of regeneration concrete is provided, to reach mitigation coagulation
The effect of native cracking phenomena.
The first purpose of this invention has the technical scheme that
A kind of regeneration concrete includes in parts by weight following components: 265-305 parts of cement, is modified 605-675 parts of rubble
450-510 parts of recycled aggregate, 680-735 parts of sand, 65-90 parts of flyash, 4-7 parts of water-reducing agent, 135-180 parts of water；
The modification regeneration aggregate processing includes following steps:
S1 takes out after recycled aggregate raw material is impregnated 20-30min in the calcium hydroxide solution that mass fraction is 5-10%, obtains
Obtain the recycled aggregate A that surface is attached with calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 15-20min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.4-0.6%, sodium hydroxide solution is added while stirring, until mixing
The pH value of liquid is 6-6.5, later, the kaolin that mass fraction is 12-16% is added into mixed liquor, is uniformly mixed, must enhance
Liquid C；
Recycled aggregate B is impregnated in enhancement solution C 1-3h, takes out drying, obtain modification regeneration aggregate by S4.
By using above scheme, the present invention has carried out modification to used recycled aggregate:
Firstly, recycled aggregate raw material is impregnated in calcium hydroxide, and contacted with carbon dioxide gas, in recycled aggregate
Surface winnofil particle.On the one hand, calcium carbonate granule can fill the hole of green bone material, old mortar surface, improve regeneration
Thus the consistency of aggregate surface structure improves the structural strength of recycled aggregate itself；On the other hand, it is filled in recycled aggregate table
The calcium carbonate granule of face gap can improve the interfacial combined function between new mortar, to mitigate by recycled aggregate and fresh sand
A possibility that crackle, is developed in the interface of slurry, mitigates the cracking phenomena of concrete.
Secondly, the present invention is by being soaked in enhancement solution C for recycled aggregate after the winnofil of recycled aggregate surface
In, so that precipitated silica particles and kaolin are continued in recycled aggregate surface.On the one hand, silica dioxide granule can be further
Play the role of filling recycled aggregate surface pore；On the other hand, silica dioxide granule can wrap up calcium carbonate granule
And covering, the corrosion resistance of calcium carbonate is improved, recycled aggregate is enabled to keep preferable for a long time in the interface of new mortar
Binding performance, improve the durability of concrete.Kaolin is a kind of clay mineral, is suitable for that kaolinic addition can disperse again
The stress of the interface of raw aggregate and new mortar, to mitigate the possibility for developing crackle by the interface of recycled aggregate and new mortar
Property.
Furthermore, it is well known that in process of setting, hydration occurs concrete for internal cement, so that concrete
Inside discharges a large amount of heats of hydration, is easy so that inside concrete and the larger temperature difference of external environment appearance, cause the cracking of concrete.
And the reasonable raw material proportioning of concrete of the invention, the hydration during concrete setting can be substantially reduced, is reduced mixed
Internal-external temperature difference in solidifying soil process of setting, is conducive to the cracking phenomena for mitigating concrete setting.
The present invention is further arranged to: the modification regeneration aggregate processing includes following steps:
S1 takes out after recycled aggregate raw material is impregnated 25min in the calcium hydroxide solution that mass fraction is 7%, obtains surface
It is attached with the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 17min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.5%, sodium hydroxide solution is added while stirring, until mixed liquor
PH value is 6.2, later, the kaolin that mass fraction is 14% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 2h, takes out drying, obtain modification regeneration aggregate by S4.
It can be improved changing for recycled aggregate by optimizing modification regeneration aggregate processing parameter by using above scheme
Property effect, thus further mitigate modified concrete cracking phenomena.
The present invention is further arranged to: include following components in parts by weight: 280 parts of cement, is modified 635 parts of rubble
485 parts of recycled aggregate, 705 parts of sand, 82 parts of flyash, 5 parts of water-reducing agent, 150 parts of water.
By using above scheme, the proportion of regeneration concrete is advanced optimized, is conducive to further mitigate regeneration coagulation
The cracking phenomena of soil.
The present invention is further arranged to: the recycled aggregate raw material is discarded concrete building waste, recycled aggregate raw material
Particle size range be 5-10mm, apparent density 2300-2350kg/m3, water absorption rate 10-12%, voidage 40-45%, contain mud
Measure 8-12%, crush values mean value 32%.
By using above scheme, discarded concrete building waste is varied, and performance difference is larger, to recycled aggregate
The physicochemical property of raw material is defined, and can further ensure that the modified effect of recycled aggregate, further increases final concrete
The mechanical properties such as crack resistence.
The present invention is further arranged to: the cement is P.O42.5.
The present invention is further arranged to: the partial size of the rubble is the continuous grade of 5-30mm, clay content≤5%.
The present invention is further arranged to: the fineness modulus of the sand is 1.6-2.2, clay content≤4%.
The present invention is further arranged to: partial size≤0.1mm of the flyash.
The present invention is further arranged to: the water-reducing agent is polycarboxylate water-reducer.
The purpose of the present invention two is: providing a kind of preparation method of above-mentioned regeneration concrete, includes following preparation step
It is rapid: at 20-30 DEG C, cement, rubble, modification regeneration aggregate, sand, water are stirred evenly, then water-reducing agent, flyash are added,
And continue to stir 10-20min, obtain regeneration concrete.
In conclusion the invention has the following advantages:
1, the present invention impregnates recycled aggregate raw material in calcium hydroxide, and is contacted with carbon dioxide gas, in Regenerated Bone
The surface winnofil particle of material, to fill the hole of green bone material, old mortar surface, the knot for improving recycled aggregate surface is fine and close
Degree and structural strength, and can improve the interfacial combined function between new mortar, so that mitigation is by recycled aggregate and new mortar
A possibility that crackle, is developed in interface, mitigates the cracking phenomena of concrete；
2, the present invention after the winnofil of recycled aggregate surface, the present invention by the way that recycled aggregate is soaked in enhancement solution C,
So that precipitated silica particles are continued on recycled aggregate surface, filling recycled aggregate surface pore can not only be further functioned as
Effect, additionally it is possible to calcium carbonate granule be wrapped up and covered, the corrosion resistance of calcium carbonate is improved, so that recycled aggregate is in new
The interface of mortar can keep preferable binding performance for a long time, improve the durability of concrete；
3, the present invention adds the kaolin of suitable proportion in enhancement solution C, can disperse the interface of recycled aggregate and new mortar
Stress, thus mitigate by the interface of recycled aggregate and new mortar develop crackle a possibility that；
4, the reasonable raw material proportioning of concrete of the invention can substantially reduce the hydration during concrete setting, contracting
Internal-external temperature difference during small concrete setting is conducive to the cracking phenomena for mitigating concrete setting.
Specific embodiment
Invention is further described in detail below.
The cement used in following embodiment is P.O42.5；The partial size of rubble is the continuous grade of 5-30mm, clay content≤5%；
The fineness modulus of sand is 1.6-2.2, clay content≤4%；Partial size≤0.1mm of flyash；Water-reducing agent is polycarboxylate water-reducer；Again
The particle size range of raw aggregate raw material is 5-10mm, apparent density 2300-2350kg/m3, water absorption rate 10-12%, voidage 40-
45%, clay content 8-12%, crush values mean value 32%.
Embodiment 1
A kind of regeneration concrete includes in parts by weight following components: 265 parts of cement, 605 parts of rubble, modification regeneration aggregate
450 parts, 680 parts of sand, 65 parts of flyash, 4 parts of water-reducing agent, 135 parts of water；
The preparation method of regeneration concrete includes: to stir evenly cement, rubble, modification regeneration aggregate, sand, water at 20 DEG C,
Water-reducing agent, flyash are added again, and continue to stir 10min, obtains regeneration concrete；
Modification regeneration aggregate processing includes following steps:
S1 takes out after recycled aggregate raw material is impregnated 20min in the calcium hydroxide solution that mass fraction is 5%, obtains surface
It is attached with the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 15min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.4%, sodium hydroxide solution is added while stirring, until mixed liquor
PH value is 6, later, the kaolin that mass fraction is 12% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 1h, takes out drying, obtain modification regeneration aggregate by S4.
Embodiment 2
A kind of regeneration concrete includes in parts by weight following components: 280 parts of cement, 635 parts of rubble, modification regeneration aggregate
485 parts, 705 parts of sand, 82 parts of flyash, 5 parts of water-reducing agent, 150 parts of water；
The preparation method of regeneration concrete includes: to stir evenly cement, rubble, modification regeneration aggregate, sand, water at 25 DEG C,
Water-reducing agent, flyash are added again, and continue to stir 15min, obtains regeneration concrete；
Modification regeneration aggregate processing includes following steps:
S1 takes out after recycled aggregate raw material is impregnated 25min in the calcium hydroxide solution that mass fraction is 7%, obtains surface
It is attached with the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 17min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.5%, sodium hydroxide solution is added while stirring, until mixed liquor
PH value is 6.2, later, the kaolin that mass fraction is 14% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 2h, takes out drying, obtain modification regeneration aggregate by S4.
Embodiment 3
A kind of regeneration concrete includes in parts by weight following components: 305 parts of cement, 675 parts of rubble, modification regeneration aggregate
510 parts, 735 parts of sand, 90 parts of flyash, 70 parts of water-reducing agent, 180 parts of water；
The preparation method of regeneration concrete includes: to stir evenly cement, rubble, modification regeneration aggregate, sand, water at 30 DEG C,
Water-reducing agent, flyash are added again, and continue to stir 20min, obtains regeneration concrete；
Modification regeneration aggregate processing includes following steps:
S1 takes out after recycled aggregate raw material is impregnated 30min in the calcium hydroxide solution that mass fraction is 10%, obtains surface
It is attached with the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 20min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.6%, sodium hydroxide solution is added while stirring, until mixed liquor
PH value is 6.5, later, the kaolin that mass fraction is 16% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 3h, takes out drying, obtain modification regeneration aggregate by S4.
Embodiment 4
A kind of regeneration concrete the difference is that, includes following components in parts by weight with embodiment 2: cement 265
Part, 605 parts of rubble, 450 parts of modification regeneration aggregate, 680 parts of sand, 65 parts of flyash, 4 parts of water-reducing agent, 135 parts of water.
Embodiment 5
A kind of regeneration concrete the difference is that, includes following components in parts by weight with embodiment 2: cement 305
Part, 675 parts of rubble, 510 parts of modification regeneration aggregate, 735 parts of sand, 90 parts of flyash, 70 parts of water-reducing agent, 180 parts of water.
Embodiment 6
A kind of regeneration concrete, the difference is that, modification regeneration aggregate processing includes following steps with embodiment 2:
S1 takes out after recycled aggregate raw material is impregnated 20min in the calcium hydroxide solution that mass fraction is 5%, obtains surface
It is attached with the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 15min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.4%, sodium hydroxide solution is added while stirring, until mixed liquor
PH value is 6, later, the kaolin that mass fraction is 12% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 1h, takes out drying, obtain modification regeneration aggregate by S4.
Embodiment 7
A kind of regeneration concrete, the difference is that, modification regeneration aggregate processing includes following steps with embodiment 2:
S1 takes out after recycled aggregate raw material is impregnated 30min in the calcium hydroxide solution that mass fraction is 10%, obtains surface
It is attached with the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 20min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.6%, sodium hydroxide solution is added while stirring, until mixed liquor
PH value is 6.5, later, the kaolin that mass fraction is 16% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 3h, takes out drying, obtain modification regeneration aggregate by S4.
Comparative example 1
A kind of regeneration concrete, with embodiment 2 the difference is that: recycled aggregate is without modification.
Comparative example 2
A kind of regeneration concrete, with embodiment 2 the difference is that: in modification regeneration aggregate processing, without step S3
With step S4, recycled aggregate B is directly as modification regeneration aggregate in regeneration concrete.
Comparative example 3
A kind of regeneration concrete, with embodiment 2 the difference is that: in modification regeneration aggregate processing, step S3 enhancement solution C
Preparation in do not add kaolin.
Concrete performance examination
Performance detection is carried out to embodiment 1-7 and comparative example 1 regeneration concrete prepared, the results are shown in Table 1.
1 regeneration concrete performance test results of table
According to table 1, comparative example 2,4,5 as can be seen that the shock resistance and cleavage strength of embodiment 2 more preferably, this be because
For the raw material proportioning of the concrete in embodiment 2 is more reasonable, can substantially reduce the aquation work during concrete setting
With, reduce concrete setting during internal-external temperature difference, be conducive to mitigate concrete setting cracking phenomena.
Method of modifying of the invention is not used to be modified recycled aggregate it can be seen from embodiment 2, comparative example 1-3,
Perhaps on surface, precipitating does not have the recycled aggregate surface of calcium carbonate to continue precipitated silica and kaolin or precipitated silica
Kaolin is not precipitated when silicon simultaneously, can weaken the shock resistance of regeneration concrete, reduces the cleavage strength of concrete, this is
Cause are as follows: improve Regenerated Bone in the surface winnofil particle of recycled aggregate to fill the hole of green bone material, old mortar surface
Expect the knot consistency and structural strength on surface, and the interfacial combined function between new mortar can be improved, to mitigate by regenerating
A possibility that crackle, is developed in the interface of aggregate and new mortar, mitigates the cracking phenomena of concrete；It is precipitated on recycled aggregate surface
After calcium carbonate, the present invention is by the way that recycled aggregate to be soaked in enhancement solution C, so that precipitated silica is continued on recycled aggregate surface
Silicon particle can not only further function as the effect of filling recycled aggregate surface pore, additionally it is possible to wrap to calcium carbonate granule
Wrap up in and cover, improve the corrosion resistance of calcium carbonate, enable recycled aggregate in the interface of new mortar keep for a long time compared with
Good binding performance improves the durability of concrete；The kaolin that suitable proportion is added in enhancement solution C, can disperse to regenerate
The stress of the interface of aggregate and new mortar, to mitigate the possibility for developing crackle by the interface of recycled aggregate and new mortar
Property.
The shock resistance of regeneration concrete in embodiment 2 it can be seen from embodiment 2,6-7 is best, cleavage strength
Highest, i.e., modification regeneration aggregate processing parameter is best to the modified effect of recycled aggregate in embodiment 2, can further improve
The shock resistance of regeneration concrete improves the cleavage strength of regeneration concrete.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (10)
1. a kind of regeneration concrete, which is characterized in that include following components in parts by weight: 265-305 parts of cement, rubble
605-675 parts, 450-510 parts of modification regeneration aggregate, 680-735 parts of sand, 65-90 parts of flyash, 4-70 parts of water-reducing agent, water 135-
180 parts；
The modification regeneration aggregate processing includes following steps:
S1 takes out after recycled aggregate raw material is impregnated 20-30min in the calcium hydroxide solution that mass fraction is 5-10%, obtains
Surface is attached with the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 15-20min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.4-0.6%, sodium hydroxide solution is added while stirring, until mixed liquor
PH value be 6-6.5, later, into mixed liquor be added mass fraction be 12-16% kaolin, be uniformly mixed, obtain enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 1-3h, takes out drying, obtain modification regeneration aggregate by S4.
2. a kind of regeneration concrete according to claim 1, which is characterized in that the modification regeneration aggregate processing includes
There are following steps:
S1 takes out after recycled aggregate raw material is impregnated 25min in the calcium hydroxide solution that mass fraction is 7%, and it is attached to obtain surface
Have the recycled aggregate A of calcium hydroxide solution；
Recycled aggregate A and carbon dioxide gas haptoreaction 17min are obtained recycled aggregate B by S2；
S3 prepares the sodium fluoride solution that mass fraction is 0.5%, sodium hydroxide solution is added while stirring, until the PH of mixed liquor
Value is 6.2, later, the kaolin that mass fraction is 14% is added into mixed liquor, is uniformly mixed, obtains enhancement solution C；
Recycled aggregate B is impregnated in enhancement solution C 2h, takes out drying, obtain modification regeneration aggregate by S4.
3. a kind of regeneration concrete according to claim 1, it is characterised in that: include following components in parts by weight:
280 parts of cement, 635 parts of rubble, 485 parts of modification regeneration aggregate, 705 parts of sand, 82 parts of flyash, 5 parts of water-reducing agent, 150 parts of water.
4. a kind of regeneration concrete according to claim 1, it is characterised in that: the recycled aggregate raw material is discarded coagulation
Civil engineering building refuse, the particle size range of recycled aggregate raw material is 5-10mm, apparent density 2300-2350kg/m3, water absorption rate 10-
12%, voidage 40-45%, clay content 8-12%, crush values mean value 32%.
5. a kind of regeneration concrete according to claim 1, it is characterised in that: the cement is P.O42.5.
6. a kind of regeneration concrete according to claim 1, it is characterised in that: the partial size of the rubble is that 5-30mm is continuous
Grade, clay content≤5%.
7. a kind of regeneration concrete according to claim 1, it is characterised in that: the fineness modulus of the sand be 1.6-2.2,
Clay content≤4%.
8. a kind of regeneration concrete according to claim 1, it is characterised in that: partial size≤0.1mm of the flyash.
9. a kind of regeneration concrete according to claim 1, it is characterised in that: the water-reducing agent is polycarboxylate water-reducer.
10. a kind of preparation method of any regeneration concrete of claim 1-9, which is characterized in that include following system
Standby step: at 20-30 DEG C, cement, rubble, modification regeneration aggregate, sand, water are stirred evenly, then water-reducing agent, flyash are added
Enter, and continue to stir 10-20min, obtains regeneration concrete.
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| CN111689738A (en) * | 2020-07-01 | 2020-09-22 | 台州四强新型建材有限公司 | Environment-friendly recycled concrete and preparation process thereof |
| CN112110669A (en) * | 2020-09-24 | 2020-12-22 | 上海建工建材科技集团股份有限公司 | Recycled aggregate reinforcing agent, preparation method thereof and recycled aggregate concrete |
| CN113248166A (en) * | 2021-06-17 | 2021-08-13 | 山东省高速路桥养护有限公司 | Asphalt pavement milling material particle reinforced stabilizer, preparation method thereof and reinforced stabilization method |
| CN115321861A (en) * | 2022-08-10 | 2022-11-11 | 香港理工大学 | Method for absorbing carbon and fixing carbon by utilizing concrete porous aggregate and concrete |
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| CN115321861B (en) * | 2022-08-10 | 2023-08-15 | 香港理工大学 | Method for absorbing and fixing carbon by utilizing concrete porous aggregate and concrete |
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