CN105293957A - Concrete gel material and preparation method thereof - Google Patents
Concrete gel material and preparation method thereof Download PDFInfo
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- CN105293957A CN105293957A CN201510876607.0A CN201510876607A CN105293957A CN 105293957 A CN105293957 A CN 105293957A CN 201510876607 A CN201510876607 A CN 201510876607A CN 105293957 A CN105293957 A CN 105293957A
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The invention discloses a concrete gel material and a preparation method thereof. The concrete gel material is prepared from the following raw materials in parts by mass: 40-50 parts of waste residues, 30-40 parts of tailings, 0.5-0.8 part of flue gas desulfurization gypsum, 1-2 parts of silicon powder, 0.5-1 part of synthesized resin, 2-4 parts of powder and 2-4 parts of an activating agent. The invention further discloses a preparation method. The concrete gel material has the beneficial effects that firstly, the raw materials (coal ash, waste residue, tailings and the like) are wide in source, easy to obtain and low in cost; secondly, 50% of cement in concrete can be replaced, and thus astonishing economic benefits and environment-friendly benefits can be achieved; thirdly, the strength of concrete with the gel material in the later period (after 28 days) can be continuously and remarkably increased; fourthly, the strength of the concrete with the gel material is kept excellent, and the durability of the concrete is greatly improved; fifthly, the concrete prepared from the gel material disclosed by the invention has the characteristics of low water thermal property, corrosion resistance, high tightness, high strength, micro shrinkage prevention, and the like.
Description
Technical field
The present invention relates to industrial mining industry technical field, particularly a kind of concrete gel material and preparation method thereof.
Background technology
Concrete admixture is to improve concrete performance, water saving, regulates strength grade of concrete, mixes the natural or artificial powdered ore material that can improve concrete performance when concrete mixing.Answer the development in market, various adulterants arises at the historic moment, and due to the performance of adulterant and the difference of composition, the spread in performance that result in compound is uneven, and working effect is also not quite similar.Moreover the material quality of existing adulterant is unstable, has increased the weight of the cost pressure of concrete mixing plant.
Therefore, how to carry out excellent improvement by adding some materials to the performance of concrete itself and characteristic, be the problem that this area is studied all the time.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of concrete gel material and preparation method thereof.
In order to realize foregoing invention object, the invention provides a kind of concrete gel material, obtained by the raw material of following mass fraction: waste residue 40-50 part, mine tailing 30-40 part, desulfurated plaster 0.5-0.8 part, silica flour 1-2 part, synthetic resins 0.5-1 part, powder 2-4 part and activator 2-4 part.
Further, obtained by the raw material of following mass fraction: 45 parts, waste residue, mine tailing 35 parts, desulfurated plaster 0.6 part, silica flour 1 part, synthetic resins 0.6 part, powder 3 parts and 3 parts, activator.
Further, described waste residue is made up of flyash and metallurgical slag, and wherein, the ratio of quality and the number of copies of flyash and metallurgical slag is: 2:0.5-1; And/or described mine tailing is the mixture of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and siliceous lithotype mine tailing, wherein, the ratio of quality and the number of copies of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and siliceous lithotype mine tailing is: 1:0.5-1:1.
Further, the main component of described powder is the brickbat of 40-50% and the dregs of 30-35%; And/or described synthetic resins is tetrafluoroethylene, epoxy resin and urethane composition, and wherein, the ratio of quality and the number of copies of tetrafluoroethylene, epoxy resin and urethane is: 0.5-1:0.1-0.5:0.5-1.
Further, described activator is obtained by following composition: sodium hydroxide 2-10 part, Starso 1-8 part, calcium sulfate 10-30 part, amides mixture 0.1-2 part, ether of cellulose 0.1-0.3 part, vinylformic acid 0.5-1 part, cyclic hydrocarbon mixture 1-2 part, macromolecule dispersing agent 0.1-1 part and water 15-30 part.
Further, described activator is obtained by following composition: 5 parts, sodium hydroxide, Starso 7 parts, 20 parts, calcium sulfate, 0.5 part, amides mixture, ether of cellulose 0.2 part, 0.7 part, vinylformic acid, 1 part, cyclic hydrocarbon mixture, macromolecule dispersing agent 0.4 part and 20 parts, water.
Further, described amides mixture is made up of N-ethyl acetamide, methane amide and 2,4-dihydroxy benzoyl amine, and its ratio of quality and the number of copies is: 1:1:0.5-1; And/or, described ether of cellulose is become to be grouped into carboxymethyl cellulose four kinds by Natvosol, carboxymethyl hydroxyethyl cellulose, ethyl cellulose, wherein, the mass fraction of each composition is: Natvosol 1-2 part, carboxymethyl hydroxyethyl cellulose 0.5-1 part, ethyl cellulose 0.5-1 part and carboxymethyl cellulose 1-2 part.
Further, cyclic hydrocarbon mixture is made up of tetrahydrobenzene and hexanaphthene, and its ratio of quality and the number of copies is: 1:0.5-1; With or, described macromolecule dispersing agent be fatty alcohol-polyoxyethylene ether and polytetrafluoroethyl-ne olefin(e) acid ammonium composition, its ratio of quality and the number of copies is: 0.5-1:1.
Wherein, the preparation method of activator comprises the following steps:
The first step, various raw materials by dewatering, beyond sodium hydroxide, Starso, calcium sulfate add in reactor respectively according to each ratio of quality and the number of copies, setting pressure is 4MPa, temperature is react at 55 DEG C, opens whipping appts simultaneously, stirs, continue 2 hours, obtained mixture;
Second step, sodium hydroxide, Starso, calcium sulfate to be added to the water according to ratio of quality and the number of copies, and to add the mixture that the first step obtains, carry out mixing and stirring, continue 30 minutes, obtain activator.
In order to achieve the above object, present invention also offers the preparation method of described concrete gel material, wherein,
The first step, by other raw materials described in except synthetic resins and activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 8-12um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 8-12um;
Second step, each raw material after the first step process delivered in mixing machine respectively and carries out mechanically mixing, mixing time is 3-4 hour, then adds activator, mixing 1-2 hour, at the temperature of 400 DEG C, carry out heating 30 minutes-1 hour, then cooling obtains batch mixing in 2 hours;
3rd step, the batch mixing obtained by second step add synthetic resins, mix 1 hour, obtain composite blend.
The invention has the beneficial effects as follows: 1. starting material (flyash, waste residue, mine tailing etc.) wide material sources, be easy to obtain, with low cost; 2. vast scale 50% replaces the cement consumption in concrete, has surprising economic benefit and environmental benefit; 3. add the concrete of gelling material, the intensity in later stage (after 28 days) has lasting significant lifting; 4. add the concrete of gelling material, intensity keeps excellent, and its weather resistance has had and significantly improves; 5. the concrete of gelling material configuration that the present invention obtains has the feature such as low hydro-thermal, corrosion-resistant, high solidity, high strength, anti-micro.
Embodiment
Below adopt embodiment to describe embodiments of the present invention in detail, to the present invention, how utilisation technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.
Embodiment 1 activator
The activator that the present invention uses, its preparation method comprises the following steps:
The first step, 5kg amides mixture, 2kg ether of cellulose, 7kg vinylformic acid, 10kg cyclic hydrocarbon mixture and 4kg macromolecule dispersing agent to be added in reactor respectively, setting pressure is 4MPa, temperature is react at 50 DEG C, open whipping appts simultaneously, stir, continue 2 hours, obtained mixture;
Second step, 50kg sodium hydroxide, 70kg Starso and 200kg calcium sulfate to be added in 200kg water, and add the mixture that the first step obtains, carry out mixing and stirring, continue 30 minutes, obtain activator.
Wherein, amides mixture is made up of 1.875kgN-ethyl acetamide, 0.625kg methane amide and 2.5kg2,4-dihydroxy benzoyl amine.
Wherein, ether of cellulose is become to be grouped into 0.73kg carboxymethyl cellulose four kinds by 0.73kg Natvosol, 0.39kg carboxymethyl hydroxyethyl cellulose, 0.15kg ethyl cellulose.
Wherein, cyclic hydrocarbon mixture is made up of 6.5kg tetrahydrobenzene and 3.5kg hexanaphthene.
Wherein, macromolecule dispersing agent is 2.6kg fatty alcohol-polyoxyethylene ether and 1.4kg polytetrafluoroethyl-ne olefin(e) acid ammonium composition.
Embodiment 2 concrete gel material I
The invention provides a kind of concrete gel material, obtained by following raw material: waste residue 40kg, mine tailing 30kg, desulfurated plaster 0.5kg, silica flour 1kg, synthetic resins 0.5kg, powder 2kg and activator 2kg.
Waste residue is made up of 32kg flyash and 8kg metallurgical slag; Mine tailing is the mixture of 12kg height alumino-silicate type mine tailing, 6kg magnesium, iron and silicon hydrochlorate type mine tailing and the siliceous lithotype mine tailing of 12kg.
The main component of powder is 0.8kg brickbat and 0.6kg dregs; Synthetic resins is 0.91kg tetrafluoroethylene, 0.18kg epoxy resin and 0.91kg urethane composition.
Wherein, the activator that obtains for embodiment 1 of the activator of use.
Preparation process is:
The first step, by other raw materials described in except synthetic resins and activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 8um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 8um;
Second step, to be delivered to respectively in mixing machine by each raw material after the first step process and carry out mechanically mixing, mixing time is 3 hours, then adds activator, mixes 1 hour, at the temperature of 400 DEG C, carries out heating 1 hour, and then cooling obtains batch mixing in 2 hours;
3rd step, the batch mixing obtained by second step add synthetic resins, mix 1 hour, obtain composite blend.
Embodiment 3 concrete gel material II
The invention provides a kind of concrete gel material, obtained by following raw material: waste residue 50kg, mine tailing 40kg, desulfurated plaster 0.8kg, silica flour 2kg, synthetic resins 1kg, powder 4kg and activator 4kg.
Waste residue is made up of 33.33kg flyash and 16.67kg metallurgical slag; Mine tailing is the mixture of 13.33kg height alumino-silicate type mine tailing, 13.33kg magnesium, iron and silicon hydrochlorate type mine tailing and the siliceous lithotype mine tailing of 13.34kg.
The main component of powder is 1kg brickbat and 0.7kg dregs; Synthetic resins is 0.4kg tetrafluoroethylene, 0.2kg epoxy resin and 0.4kg urethane composition.
Wherein, the activator that obtains for embodiment 1 of the activator of use.
Preparation process is:
The first step, by other raw materials described in except synthetic resins and activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 12um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 12um;
Second step, to be delivered to respectively in mixing machine by each raw material after the first step process and carry out mechanically mixing, mixing time is 4 hours, then adds activator, mixes 2 hours, at the temperature of 400 DEG C, carries out heating 1 hour, and then cooling obtains batch mixing in 2 hours;
3rd step, the batch mixing obtained by second step add synthetic resins, mix 1 hour, obtain composite blend.
Embodiment 4 concrete gel material III
The invention provides a kind of concrete gel material, obtained by following raw material: waste residue 45kg, mine tailing 35kg, desulfurated plaster 0.6kg, silica flour 1kg, synthetic resins 0.6kg, powder 3kg and activator 3kg.
Waste residue is made up of 34.6kg flyash and 10.4kg metallurgical slag; Mine tailing is the mixture of 13.46kg height alumino-silicate type mine tailing, 8.08kg magnesium, iron and silicon hydrochlorate type mine tailing and the siliceous lithotype mine tailing of 13.46kg.
The main component of powder is 1.35kg brickbat and 0.96kg dregs; Described synthetic resins is 0.3kg tetrafluoroethylene, 0.15kg epoxy resin and 0.15kg urethane composition.
Wherein, the activator that obtains for embodiment 1 of the activator of use.
Preparation process is:
The first step, by other raw materials described in except synthetic resins and activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 10um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 10um;
Second step, to be delivered to respectively in mixing machine by each raw material after the first step process and carry out mechanically mixing, mixing time is 3 hours, then adds activator, mixes 1 hour, at the temperature of 400 DEG C, carries out heating 1 hour, and then cooling obtains batch mixing in 2 hours;
3rd step, the batch mixing obtained by second step add synthetic resins, mix 1 hour, obtain composite blend.
Project simultaneous test
Data analysis is carried out for Linyi Tianyuan concrete works company limited concrete project.
Control group is the C30 concrete not using adulterant to mix to obtain; First group of C30 concrete using gelling material (I) to mix.Second group of C30 concrete using gelling material (II) to mix.The 3rd group of C30 concrete using gelling material (III) to mix.
Table 1 is raw material Basic Information Table
| Material | Model specification | Price | Remarks |
| Cement | Po42.5 | 225 yuan/ton | |
| Breeze | 140 yuan/ton | ||
| Flyash | Three grades | 100 yuan/ton | |
| Sand | 30 yuan/ton | ||
| Stone | 5-25 particle diameter | 45 yuan/ton | |
| Admixture | 1700 yuan/ton | ||
| Gelling material (I) | 76.7 yuan/ton | ||
| Gelling material (II) | 76.6 yuan/ton | ||
| Gelling material (III) | 76.3 yuan/ton |
(1) 3 test group and 1 control group is selected to carry out 1M
3the improvement contrast of concrete materials and performance thereof.
Table 2 is the Cost comparisons of 4 groups
| Every m3 materials | Cement (kg) | Water (kg) | Sand (kg) | Stone (kg) | Flyash | Breeze | Admixture (kg) | Composite blend (kg) | Cost (unit) |
| Control group | 310 | 168 | 779 | 1032 | 90 | -- | 10.5 | -- | 166.41 |
| First group | 160 | 145 | 779 | 1032 | -- | -- | 10.5 | 230 | 141.3 |
| Second group | 160 | 145 | 779 | 1032 | -- | -- | 10.5 | 230 | 141.03 |
| 3rd group | 160 | 145 | 779 | 1032 | -- | -- | 10.5 | 230 | 141.21 |
Can be learnt by table 2, the consumption of 4 groups of every side's concrete materials and contrast, can learn, compared with control group, the cement consumption of 3 embodiment groups greatly reduces to 50%, and the cost of three embodiment groups about decreases 24.5 yuan, 25.4 yuan and 25.2 yuan respectively relative to the cost of control group.
(2) intensity detection of slump and 1 day, 3 days, 7 days, 14 days and 28 days is carried out respectively for 4 groups.
Result is as table 3.
Can be learnt by table 3,3 embodiment groups add the gelling material of activator of the present invention for concrete production, the initial ultimate compression strength of concrete can be made to improve 20-27MPa, and after realizing 28 days, ultimate compression strength improve about 33MPa further, substantially increases concrete performance.
(3) the concrete porosity of four groups and the impact of carbonation depth is compared.And with condition, intensity detection and cracking situation are carried out to the concrete of 4 groups after 3 years.
Table 4 is result
| Group | Porosity | Intensity (MPa) | Carbonation depth and outward appearance |
| Control group | 20.2% | 48.4 | 12mm, has hair line |
| First group | 9.2% | 61.2 | 5mm, without drop phenomenon, flawless |
| Second group | 9.0% | 62.5 | 5mm, without drop phenomenon, flawless |
| 3rd group | 9.0% | 61.8 | 5mm, without drop phenomenon, flawless |
As can be seen from Table 4, the porosity of 3 embodiment groups is significantly less than control group.And the intensity of concrete product and degree of compactness keep better performance, and weather resistance improves a lot always.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a concrete gel material, is characterized in that, is obtained by the raw material of following mass fraction: waste residue 40-50 part, mine tailing 30-40 part, desulfurated plaster 0.5-0.8 part, silica flour 1-2 part, synthetic resins 0.5-1 part, powder 2-4 part and activator 2-4 part.
2. concrete gel material according to claim 1, is characterized in that, is obtained by the raw material of following mass fraction: 45 parts, waste residue, mine tailing 35 parts, desulfurated plaster 0.6 part, silica flour 1 part, synthetic resins 0.6 part, powder 3 parts and 3 parts, activator.
3. concrete gel material according to claim 1 and 2, is characterized in that, described waste residue is made up of flyash and metallurgical slag, and wherein, the ratio of quality and the number of copies of flyash and metallurgical slag is: 2:0.5-1; And/or described mine tailing is the mixture of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and siliceous lithotype mine tailing, wherein, the ratio of quality and the number of copies of high alumino-silicate type mine tailing, magnesium, iron and silicon hydrochlorate type mine tailing and siliceous lithotype mine tailing is: 1:0.5-1:1.
4. the concrete gel material according to any one of claims 1 to 3, is characterized in that, the main component of described powder is the brickbat of 40-50% and the dregs of 30-35%; And/or described synthetic resins is the mixing of tetrafluoroethylene, epoxy resin and urethane, wherein, the ratio of quality and the number of copies of tetrafluoroethylene, epoxy resin and urethane is: 0.5-1:0.1-0.5:0.5-1.
5. the concrete gel material according to any one of Claims 1-4, it is characterized in that, described activator is obtained by following composition: sodium hydroxide 2-10 part, Starso 1-8 part, calcium sulfate 10-30 part, amides mixture 0.1-2 part, ether of cellulose 0.1-0.3 part, vinylformic acid 0.5-1 part, cyclic hydrocarbon mixture 1-2 part, macromolecule dispersing agent 0.1-1 part and water 15-30 part.
6. the concrete gel material according to any one of claim 1 to 5, it is characterized in that, described activator is obtained by following composition: 5 parts, sodium hydroxide, Starso 7 parts, 20 parts, calcium sulfate, 0.5 part, amides mixture, ether of cellulose 0.2 part, 0.7 part, vinylformic acid, 1 part, cyclic hydrocarbon mixture, macromolecule dispersing agent 0.4 part and 20 parts, water.
7. the concrete gel material according to any one of claim 1 to 5, is characterized in that, described amides mixture is made up of N-ethyl acetamide, methane amide and 2,4-dihydroxy benzoyl amine, and its ratio of quality and the number of copies is: 0.5-1:0.1-0.5:0.7-1; And/or, described ether of cellulose is become to be grouped into carboxymethyl cellulose four kinds by Natvosol, carboxymethyl hydroxyethyl cellulose, ethyl cellulose, wherein, the mass fraction of each composition is: Natvosol 1-2 part, carboxymethyl hydroxyethyl cellulose 0.5-1 part, ethyl cellulose 0.1-0.5 part and carboxymethyl cellulose 1-2 part.
8. the concrete gel material according to any one of claim 1 to 5, is characterized in that, cyclic hydrocarbon mixture is made up of tetrahydrobenzene and hexanaphthene, and its ratio of quality and the number of copies is: 1-2:0.5-1; And/or described macromolecule dispersing agent is fatty alcohol-polyoxyethylene ether and polytetrafluoroethyl-ne olefin(e) acid ammonium composition, and its ratio of quality and the number of copies is: 1-2:0.5-1.
9. the concrete gel material according to any one of claim 1 to 5, is characterized in that, the preparation method of activator comprises the following steps:
The first step, various raw materials by dewatering, beyond sodium hydroxide, Starso, calcium sulfate add in reactor respectively according to each ratio of quality and the number of copies, setting pressure is 4MPa, temperature is react at 50 DEG C, opens whipping appts simultaneously, stirs, continue 2 hours, obtained mixture;
Second step, sodium hydroxide, Starso, calcium sulfate to be added to the water according to ratio of quality and the number of copies, and to add the mixture that the first step obtains, carry out mixing and stirring, continue 30 minutes, obtain activator.
10. the concrete gel material according to any one of claim 1 to 9, is characterized in that, comprises the following steps:
The first step, by other raw materials described in except synthetic resins and activator respectively via band frequency conversion rotary feeder respectively feeding grind in ultra-fine vertical mill, the particle diameter of each raw material is made to reach 8-12um, and the raw material that particle diameter not to be reached requirement by screening reenters in ultra-fine vertical mill and grinds, until particle diameter reaches 8-12um;
Second step, each raw material after the first step process delivered in mixing machine respectively and carries out mechanically mixing, mixing time is 3-4 hour, then adds activator, mixing 1-2 hour, at the temperature of 400 DEG C, carry out heating 30 minutes-1 hour, then cooling obtains batch mixing in 2 hours;
3rd step, the batch mixing obtained by second step add synthetic resins, mix 1 hour, obtain composite blend.
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| CN105646815A (en) * | 2016-03-29 | 2016-06-08 | 华北理工大学 | Preparation method of tailing powder and straw cellulose-enhanced polyurethane/epoxy resin thermal insulation wall board |
| CN107973540A (en) * | 2017-12-27 | 2018-05-01 | 江苏百瑞吉新材料有限公司 | A kind of concrete intensifier and preparation method thereof |
| CN111732365A (en) * | 2020-07-22 | 2020-10-02 | 湖南大学 | Concrete composite admixture and preparation method thereof |
| CN116675463A (en) * | 2023-08-03 | 2023-09-01 | 河北省建筑科学研究院有限公司 | Special early strength agent for preparing solid waste-based cementing material by utilizing tailing waste and preparation method |
| CN117069451A (en) * | 2023-08-17 | 2023-11-17 | 重庆大学溧阳智慧城市研究院 | Method for preparing high-strength 3D printed concrete based on modified antimony tailings |
| CN117602871A (en) * | 2024-01-22 | 2024-02-27 | 中建八局西南建设工程有限公司 | Novel fast-curing residue-soil-based regenerated composite material and preparation method thereof |
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| CN105646815A (en) * | 2016-03-29 | 2016-06-08 | 华北理工大学 | Preparation method of tailing powder and straw cellulose-enhanced polyurethane/epoxy resin thermal insulation wall board |
| CN105646815B (en) * | 2016-03-29 | 2018-09-28 | 华北理工大学 | A kind of preparation method of mine tailing and stalk cellulose enhancing polyurethane/epoxy resin insulation wallboard |
| CN107973540A (en) * | 2017-12-27 | 2018-05-01 | 江苏百瑞吉新材料有限公司 | A kind of concrete intensifier and preparation method thereof |
| CN111732365A (en) * | 2020-07-22 | 2020-10-02 | 湖南大学 | Concrete composite admixture and preparation method thereof |
| CN116675463A (en) * | 2023-08-03 | 2023-09-01 | 河北省建筑科学研究院有限公司 | Special early strength agent for preparing solid waste-based cementing material by utilizing tailing waste and preparation method |
| CN116675463B (en) * | 2023-08-03 | 2023-10-13 | 河北省建筑科学研究院有限公司 | Special early strength agent for preparing solid waste-based cementing material by utilizing tailing waste and preparation method |
| CN117069451A (en) * | 2023-08-17 | 2023-11-17 | 重庆大学溧阳智慧城市研究院 | Method for preparing high-strength 3D printed concrete based on modified antimony tailings |
| CN117069451B (en) * | 2023-08-17 | 2024-05-28 | 重庆大学溧阳智慧城市研究院 | Method for preparing high-strength 3D printed concrete based on modified antimony tailings |
| CN117602871A (en) * | 2024-01-22 | 2024-02-27 | 中建八局西南建设工程有限公司 | Novel fast-curing residue-soil-based regenerated composite material and preparation method thereof |
| CN117602871B (en) * | 2024-01-22 | 2024-04-09 | 中建八局西南建设工程有限公司 | Novel fast-curing residue-soil-based regenerated composite material and preparation method thereof |
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