CN110423056A - A kind of alkali-activated carbonatite fly ash base cementitious material and preparation method thereof mixed with regenerated coarse aggregate - Google Patents
A kind of alkali-activated carbonatite fly ash base cementitious material and preparation method thereof mixed with regenerated coarse aggregate Download PDFInfo
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- CN110423056A CN110423056A CN201910795157.0A CN201910795157A CN110423056A CN 110423056 A CN110423056 A CN 110423056A CN 201910795157 A CN201910795157 A CN 201910795157A CN 110423056 A CN110423056 A CN 110423056A
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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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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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- Environmental & Geological Engineering (AREA)
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- Materials Engineering (AREA)
- Structural Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention belongs to construction material preparation technical field, specially a kind of alkali-activated carbonatite fly ash base cementitious material and preparation method thereof mixed with regenerated coarse aggregate.The material includes 1100-1200 parts of regenerated coarse aggregate, 500-550 parts of fine aggregate, 450-500 parts of flyash, 200 parts of aqueous slkali.The preparation method comprises the following steps: substituting natural coarse aggregate using the processing regenerated coarse aggregate of crusher, prepare regeneration concrete, but it has been investigated that the incorporation of regenerated coarse aggregate can reduce the intensity of concrete, or replaces part of cement with more flyash, can also reduce the intensity of concrete.The cementitious material made of aqueous slkali excitation coal ash for manufacturing is standby, on the one hand regenerated coarse aggregate and power plant burning byproduct flyash can be utilized to mass efficient simultaneously, resource reutilization, saving construction cost, mitigate environmental pressure, on the other hand it can solve the adverse effect that regenerated coarse aggregate reduces strength on concrete material, reach building material requested intensity, meet the needs of Practical Project construction.
Description
Technical field
The invention belongs to construction material preparation technical field, specially a kind of alkali-activated carbonatite flyash mixed with regenerated coarse aggregate
Based cementitious material and preparation method thereof.
Technical background
Flyash, is the fine ash that catching is got off from the flue gas after coal combustion, and flyash is the main of coal-burning power plant's discharge
Solid waste.The main oxides of power plants flyash form are as follows: SiO2、Al2O3、FeO、Fe2O3、CaO、TiO2Deng.With
The development of power industry, the flyash discharge capacity of coal-burning power plant increase year by year, become the biggish Industry Waste of the current discharge capacity in China
One of slag.A large amount of flyash is untreated, will generate fugitive dust, pollutes atmosphere；Silt up if being discharged into water system and will cause river, and
Toxic chemical substance therein can also cause damages to human body and biology.But flyash resourcebility utilizes, and is such as used as concrete
Admixture etc..
Coarse aggregate refers to sand, stone in concrete, plays skeleton function, referred to as aggregate or gathers materials, and wherein partial size is greater than 5mm's
Aggregate is known as coarse aggregate；Fine aggregate is the construction material opposite with coarse aggregate, and partial size is known as thin bone in 4.75mm aggregate below
Material.
Currently, the most widely used construction material is exactly concrete material both at home and abroad, prepares concrete and need using big
The cement of amount is mixed and stirred, and has the document that cement is prepared using flyash part at present, but effect is all not fully up to expectations.Separately
Outside, the removal of China's building and earthquake disaster can all generate more concrete waste material, can generate after state's power plant thermal power generation
Many byproduct flyash.If can solve the problems, such as that construction waste and combustion by-product are stacked simultaneously, and make material
Property gets a promotion, and thus can be very good to realize the utilization to concrete waste material and flyash.
The method now used is to prepare regeneration concrete using the processing regenerated coarse aggregate substitution natural coarse aggregate of crusher,
But it has been investigated that the incorporation of regenerated coarse aggregate can reduce the intensity of concrete, or divide cement with the substitution of more flyash, but
Also the intensity of concrete can be reduced.
Summary of the invention
Goal of the invention of the invention is in view of the above-mentioned problems, providing a kind of alkali-activated carbonatite fly ash base mixed with regenerated coarse aggregate
Cementitious material.The fly ash base cementitious material takes full advantage of the obsolete material of building and the combustion by-products in power plant, to can
Sustainable development and environmental protection play positive effect, while exciting fly ash base cementitious material using the aqueous slkali of configuration, no
It only can be improved the strength of materials after adding regenerated coarse aggregate, and can be improved the durability of material.
Another goal of the invention of the invention is to provide the preparation method of fly ash base cementitious material described above.
In order to realize the above goal of the invention, the technical solution of the present invention is as follows:
A kind of alkali-activated carbonatite fly ash base cementitious material mixed with regenerated coarse aggregate comprising the raw material of following parts by weight: again
It is coarse aggregate 1100-1200 parts, 500-550 parts of fine aggregate, 450-500 parts of flyash, 200 parts of aqueous slkali raw.
The aqueous slkali is by NaOH solution and Na2SiO3Solution allocation forms, NaOH solution and Na2SiO3Solution
Mass ratio is 50-60:140-150.
In terms of mass percentage 100%, Na2SiO3The mass percent of each ingredient in solution are as follows: SiO226.2%,
Na2O 28.2%, H2O 45.6%, the sum of gross mass percentage composition are 100%；NaOH solution is the NaOH for being 98% by purity
The aqueous slkali that concentration made of solid and distilled water configuration is 8mol/L.
Preparation method of the above mixed with the alkali-activated carbonatite fly ash base cementitious material of regenerated coarse aggregate, including following step
It is rapid:
1) by concrete waste material by pulverizer Mechanical Crushing, artificial screening rejects flake or there are obvious crackles etc.
The poor regenerated coarse aggregate of mechanical property is starched by washing off the loose old sand in recycled aggregate surface, regenerated coarse aggregate is made；
Flyash is sufficiently crushed as powder；
2) after coarse aggregate to be regenerated sufficiently dries, by coarse aggregate and fine aggregate in concrete mixer dry mixing 1min, so
Flyash is poured into afterwards and continues to stir 1min, is slow added into aqueous slkali, continues stir about 3min, is uniformly mixed it, then press
Concrete component is made in as requested；The aqueous slkali being prepared by sodium hydroxide solution and sodium silicate solution, will pour coagulation
Completion is prepared for 24 hours before native；
3) the baking oven high temperature maintenance that concrete component is put into 80 DEG C for 24 hours, develops its intensity sufficiently, then component is put
At 20 DEG C ± 2 DEG C, relative humidity carries out standard curing in the fog room not less than 95%.
Compared with prior art, the invention has the benefit that
(1), the obsolete material of building and the combustion by-products in power plant are taken full advantage of, to sustainable development and environment
Protection plays positive effect.
(2) fly ash base cementitious material is excited using the aqueous slkali of configuration simultaneously, admixture can not only be improved and regenerate thick bone
The strength of materials after material, and can be improved the durability of material.
Detailed description of the invention
Fig. 1 is the microcosmic of the alkali-activated carbonatite fly ash base cementitious material mixed with regenerated coarse aggregate being prepared in embodiment 1
Structure chart can be seen from the chart that regenerated coarse aggregate and the interface of fly-ash mortar matrix are tightly combined.
Specific embodiment
In order to make the contents of the present invention easily facilitate understanding, below in conjunction with specific embodiment to heretofore described
Technique is further elaborated.But the range that this should not be interpreted as to the above-mentioned theme of the present invention is only limitted to following embodiments.
% employed in the application indicates its mass percentage, i.e. wt% unless otherwise specified.Implement below
For the raw material used in example for Class F fly ash, fine coal ash component is shown in Table 1；The maximum nominal diameter of regenerated coarse aggregate is 20mm,
Continuous grading；Na2SiO3The main component of solution are as follows: SiO226.2%, Na2O 28.2%, H2O 45.6%；Aqueous slkali be by
The NaOH solution that concentration made of NaOH solid and the distilled water configuration that purity is 98% is 8mol/L.
1 fine coal ash component of table
Embodiment 1:
A kind of alkali-activated carbonatite fly ash base cementitious material mixed with regenerated coarse aggregate comprising the raw material of following parts by weight: again
Raw 1171 parts of coarse aggregate, 539 parts of fine aggregate, 459 parts of flyash, 200 parts of aqueous slkali.
Embodiment 2:
A kind of alkali-activated carbonatite fly ash base cementitious material mixed with regenerated coarse aggregate comprising the raw material of following parts by weight: again
Raw 1188 parts of coarse aggregate, 522 parts of fine aggregate, 452 parts of flyash, 200 parts of aqueous slkali.
Embodiment 3:
A kind of alkali-activated carbonatite fly ash base cementitious material mixed with regenerated coarse aggregate comprising the raw material of following parts by weight: again
Raw 1165 parts of coarse aggregate, 545 parts of fine aggregate, 468 parts of flyash, 200 parts of aqueous slkali.
Formula of the embodiment 1 into embodiment 3 is subjected to the alkali-activated carbonatite fly ash base cementitious material mixed with regenerated coarse aggregate
Preparation, the specific steps are as follows:
1) by concrete waste material by pulverizer Mechanical Crushing, artificial screening rejects flake or there are obvious crackles etc.
The poor regenerated coarse aggregate of mechanical property is starched by washing off the loose old sand in recycled aggregate surface, regenerated coarse aggregate is made；
2) after coarse aggregate to be regenerated sufficiently dries, by coarse aggregate and fine aggregate in concrete mixer dry mixing 1min, so
Flyash is poured into afterwards and continues to stir 1min, is slow added into aqueous slkali, continues stir about 3min, carries out it after mixing
It pours；The aqueous slkali being prepared by sodium hydroxide solution and sodium silicate solution, will prepare for 24 hours completion before casting concrete；
Test piece maintenance mode: it pours and completes 100mm × 100mm × 100mm test cube, test specimen is put into 80 DEG C of high temperature
It is conserved in furnace for 24 hours, is then placed in standard curing box (temperature is 20 ± 2 DEG C, and relative humidity is 95% or more) and conserves 26d, after
It is taken out from standard curing box, dries 48h at 60 DEG C.The total 28d of curing age tests compression strength when 28d.
Embodiment 1 to embodiment 3 is named as materials A, material B according to the gel rubber material that above method is prepared respectively
And material C, to materials A, material B and material C carry out compressive strength determination, and concrete outcome is as follows:
It is proved by the above experimental data, the gel rubber material compression strength being prepared using this method is good, and it is general to reach C45
Logical silicate concrete strength grade.
Test 1:
Test be provided with 3 groups mixed with or not mixed with the alkali-activated carbonatite fly ash base cementitious material of regenerated coarse aggregate, it is specific to match
It is shown in Table 2.
Table 2
Note: GRC0- recycled coarse aggregate contents 0%；GRC50- recycled coarse aggregate contents 50%；GRC100- regeneration is thick
Aggregate Replacement rate 100%.
1. test piece maintenance mode: pouring and complete 100mm × 100mm × 100mm test cube, test specimen is put into 80 DEG C of height
It is conserved in warm furnace for 24 hours, is then placed in standard curing box (temperature is 20 ± 2 DEG C, and relative humidity is 95% or more) and conserves 26d,
It is taken out from standard curing box afterwards, dries 48h at 60 DEG C.The total 28d of curing age tests compression strength when 28d.
2. three groups of test specimens, the compression strength measured are shown in Table 3.
3 compression strength of table
As can be seen from Table 3, regenerated coarse aggregate can replace natural coarse aggregate, the pressure resistance of fly ash base cementitious material completely
Degree can reach C45 normal silicate strength grade of concrete there is no reducing.GRC0 represents regenerated coarse aggregate and is not added with, thick bone
Material is natural coarse aggregate, and according to identical match ratio, the compression strength of GRC0 is 46.1MPa；GRC100, which is represented, regenerates thick bone
Material all replaces natural aggregate, and the compression strength of GRC100 is 48.8MPa at this time, can reach C45 concrete strength requirement, and
The latter's intensity is slightly above the former.This is mainly due to the old sand on regenerated coarse aggregate surface slurries still to remain hydrolysis product of cement, energy
Secondary response occurs for enough and flyash, so that the Ca (OH) in hydrolysis product of cement2Crystal grain refinement, crystal Ca (OH)2Determine
Weaken to arrangement phenomenon, wherein Poor structure is reduced；Some unreacteds or the incomplete fly ash grain of reaction can be filled out simultaneously
The micro-pore for filling transition region between regenerated coarse aggregate and mortar in ground polymers regeneration concrete, so that interfaces transition plot structure is more
Encryption is real.
Test 2:
Experimental condition only changes the additive amount of alkali-activated carbonatite solution with embodiment 1, when aqueous slkali addition is improper: for fine coal
For lacquer putty polymers concrete, the OH in gel content and aqueous slkali that is formed in hydration processConcentration it is closely bound up, concentration
When lower, geopolymeric reaction is not thorough, and flyash fails sufficiently to participate in reaction, and gel structure is poor, and compression strength is low；With alkali
The increase of solution concentration, more SiO2With Al2O3Oligomerization is participated in, compression strength can be effectively improved；When aqueous slkali is dense
Height is spent, extra basic ion can generate alumino-silicate compound precipitating in early stage, to reduce compression strength.
The exciting agent of geopolymeric reaction is usually containing SiO3 2-Aqueous slkali, the effect of aqueous slkali is made in raw material
Aluminosilicate dissolve and polymerize.
Metal ion in aqueous slkali is mainly used for balancing Al in geo-polymer3+The negative electrical charge of ion.Alkali in exciting agent
The metal cation of solution and the concentration of alkali have the influence that can not ignore to the performance of geopolymeric reaction and geo-polymer.Na+Volume ratio Mg2+It is smaller, the polycondensation reaction in solution can be made more thorough, while Na+Compare Mg2+It is more basic, it can make more
More Si and Al are dissolved out from raw material, and the Si in oligomerization state and free state is easier anti-with the Al of dissolution generation polycondensation
Geo-polymer gel should be generated, so that ground polymers compression strength improves.
The concentration of Si influences the performance of geo-polymer very big in alkali-activated carbonatite solvent, and the concentration of Si is higher, compression strength
Higher but excessively high Si concentration may be unfavorable to compression strength.Si concentration is smaller in exciting agent, newly-generated gel precipitation attachment
In on flyash, the solution of the elements such as Si, Al works as exciting agent to influence continuing for polycondensation reaction in obstruction flyash
Middle Si concentration suitably increases, this inhibition is obviously weakened.
Test 3:
Experimental condition only changes the additive amount of flyash with embodiment 1, if flyash addition is improper: lacking enough powder
Coal ash is reacted with aqueous slkali exciting agent, so that enough geo-polymer cementitious materials can not be formed, influences intensity；Excessive powder
Coal ash is unable to fully react with aqueous slkali exciting agent, and remaining fly ash grain will affect the microcosmic knot of geo-polymer
Structure, so that it is loosely organized, there is hole, influences intensity.
Test 4:
Experimental condition is with embodiment 1, but maintenance process is wrapped up according to room temperature and being conserved, and can make ground polymers regeneration concrete
Early strength is lower, and this is mainly due to early stage flyash and NaOH and Na2SiO3The gel generated in the alkali-activated carbonatite environment of formation
Mainly based on rich Al gel, mechanical strength is lower, needs the maintenance by certain age, can just be changed into more stable richness
Si gel, mechanical strength are higher.
Curing temperature is improved in a certain range, the compression strength of ground polymers concrete can be significantly improved, if but temperature
It is promoted excessively, can compression strength be increasesd slowly, or even downward trend occur.This, which is primarily due to High Temperature Curing, to add
The chemical reaction of fast early stage flyash and alkali-activator, promotes dense micro-structure；And curing temperature is excessively high can make instead
Compression strength decline, it is too fast that this is primarily due to internal moisture evaporation, lacks enough moisture and participates in polymerization reaction, while moisture
Evaporation forms internal vapor pressure, will lead to the generation and extension of underbead crack, damages its compression strength.
It is elaborated although the present invention has passed through specific embodiment, this profession ordinary skill
Personnel should be understood that made on this basis without departing from any form of claims and the variation of details,
Belong to invention which is intended to be protected.
Claims (4)
1. a kind of alkali-activated carbonatite fly ash base cementitious material mixed with regenerated coarse aggregate, it is characterised in that the original including following parts by weight
Material: 1100-1200 parts of regenerated coarse aggregate, 500-550 parts of fine aggregate, 450-500 parts of flyash, 200 parts of aqueous slkali.
2. as described in claim 1 mixed with the alkali-activated carbonatite fly ash base cementitious material of regenerated coarse aggregate, it is characterised in that: described
Aqueous slkali is by NaOH solution and Na2SiO3Solution allocation forms, NaOH solution and Na2SiO3The mass ratio of solution is 50-60:
140-150.
3. as claimed in claim 2 mixed with the alkali-activated carbonatite fly ash base cementitious material of regenerated coarse aggregate, it is characterised in that with quality
Percentage composition 100% is counted, Na2SiO3The mass percent of each ingredient in solution are as follows: SiO226.2%, Na2O28.2%,
H2O45.6%；NaOH solution is the alkali that concentration made of the NaOH solid for being 98% as purity is configured with distilled water is 8mol/L
Solution.
4. mixed with the preparation of the alkali-activated carbonatite fly ash base cementitious material of regenerated coarse aggregate as described in claim 1 to claim 3
Method, it is characterised in that the following steps are included:
1) by concrete waste material by pulverizer Mechanical Crushing, artificial screening rejects flake or there are the mechanics such as obvious crackle
The poor regenerated coarse aggregate of performance is starched by washing off the loose old sand in recycled aggregate surface, regenerated coarse aggregate is made；By powder
Coal ash sufficiently crushes as powder；
2) after coarse aggregate to be regenerated sufficiently dries, by coarse aggregate and fine aggregate in concrete mixer dry mixing 1min, then will
Flyash, which pours into, to be continued to stir 1min, is slow added into aqueous slkali, is continued stir about 3min, is uniformly mixed it, according still further to wanting
It asks and concrete component is made；The aqueous slkali being prepared by sodium hydroxide solution and sodium silicate solution, be before casting concrete
Completion is prepared for 24 hours；
3) the baking oven high temperature maintenance that concrete component is put into 80 DEG C for 24 hours, develops its intensity sufficiently, then component is placed on 20
DEG C ± 2 DEG C, relative humidity carries out standard curing in the fog room not less than 95%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250355A (en) * | 2020-09-27 | 2021-01-22 | 山西省交通科技研发有限公司 | Alkali-activated fly ash/slag recycled concrete and preparation method thereof |
| CN112479674A (en) * | 2020-11-23 | 2021-03-12 | 湖南大学 | Alkali-activated recycled red brick micro powder and slag-based recycled concrete and preparation method thereof |
| CN112573875A (en) * | 2020-12-09 | 2021-03-30 | 东南大学 | Preparation method of geopolymer concrete based on complete utilization of lime-fly ash crushed stone waste |
| CN113831152A (en) * | 2021-10-26 | 2021-12-24 | 纳思同(无锡)科技发展有限公司 | All-solid-waste high-strength permeable geopolymer concrete and preparation method thereof |
| CN113860804A (en) * | 2021-09-30 | 2021-12-31 | 常州大学 | Graphene oxide modified geopolymer recycled concrete and preparation method thereof |
| CN115403321A (en) * | 2022-09-30 | 2022-11-29 | 燕山大学 | Geopolymer concrete and preparation method thereof |
| CN116589233A (en) * | 2023-05-18 | 2023-08-15 | 内蒙古科技大学 | Low-shrinkage alkali-activated cementing material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601424A (en) * | 2013-11-11 | 2014-02-26 | 长沙理工大学 | Geopolymeric concrete based on recycled aggregate and preparation method of geopolymeric concrete |
| CN104803630A (en) * | 2014-01-26 | 2015-07-29 | 神华集团有限责任公司 | Geopolymer composition and geopolymer material |
| CN105130373A (en) * | 2015-09-30 | 2015-12-09 | 四川大学 | Preparation method of fly ash based polymer concrete |
| US9321687B2 (en) * | 2013-07-03 | 2016-04-26 | University Of North Dakota | Low concentration alkali fly ash cement and method of making |
-
2019
- 2019-08-27 CN CN201910795157.0A patent/CN110423056A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9321687B2 (en) * | 2013-07-03 | 2016-04-26 | University Of North Dakota | Low concentration alkali fly ash cement and method of making |
| CN103601424A (en) * | 2013-11-11 | 2014-02-26 | 长沙理工大学 | Geopolymeric concrete based on recycled aggregate and preparation method of geopolymeric concrete |
| CN104803630A (en) * | 2014-01-26 | 2015-07-29 | 神华集团有限责任公司 | Geopolymer composition and geopolymer material |
| CN105130373A (en) * | 2015-09-30 | 2015-12-09 | 四川大学 | Preparation method of fly ash based polymer concrete |
Non-Patent Citations (2)
| Title |
|---|
| 任芝军: "《固体废物处理处置与资源化技术》", 30 April 2010, 哈尔滨工业大学出版社 * |
| 黄琪等: "《再生粗骨料对粉煤灰基地聚物混凝土碳化性能的影响》", 《硅酸盐通报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250355A (en) * | 2020-09-27 | 2021-01-22 | 山西省交通科技研发有限公司 | Alkali-activated fly ash/slag recycled concrete and preparation method thereof |
| CN112479674A (en) * | 2020-11-23 | 2021-03-12 | 湖南大学 | Alkali-activated recycled red brick micro powder and slag-based recycled concrete and preparation method thereof |
| CN112573875A (en) * | 2020-12-09 | 2021-03-30 | 东南大学 | Preparation method of geopolymer concrete based on complete utilization of lime-fly ash crushed stone waste |
| CN113860804A (en) * | 2021-09-30 | 2021-12-31 | 常州大学 | Graphene oxide modified geopolymer recycled concrete and preparation method thereof |
| CN113831152A (en) * | 2021-10-26 | 2021-12-24 | 纳思同(无锡)科技发展有限公司 | All-solid-waste high-strength permeable geopolymer concrete and preparation method thereof |
| CN115403321A (en) * | 2022-09-30 | 2022-11-29 | 燕山大学 | Geopolymer concrete and preparation method thereof |
| CN115403321B (en) * | 2022-09-30 | 2023-05-19 | 燕山大学 | Geopolymer concrete and preparation method thereof |
| CN116589233A (en) * | 2023-05-18 | 2023-08-15 | 内蒙古科技大学 | Low-shrinkage alkali-activated cementing material and preparation method thereof |
| CN116589233B (en) * | 2023-05-18 | 2024-04-19 | 内蒙古科技大学 | Low-shrinkage alkali-activated cementing material and preparation method thereof |
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