CN109369048A - A kind of asphalt and preparation method thereof of chemical modification red mud substitution miberal powder - Google Patents
A kind of asphalt and preparation method thereof of chemical modification red mud substitution miberal powder Download PDFInfo
- Publication number
- CN109369048A CN109369048A CN201811600540.8A CN201811600540A CN109369048A CN 109369048 A CN109369048 A CN 109369048A CN 201811600540 A CN201811600540 A CN 201811600540A CN 109369048 A CN109369048 A CN 109369048A
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- Prior art keywords
- red mud
- parts
- chemical modification
- chemical
- asphalt
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Classifications
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B18/0409—Waste from the purification of bauxite, e.g. red mud
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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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
Abstract
The invention discloses the asphalt and preparation method thereof that a kind of chemical modification red mud replaces miberal powder, chemical modification red mud is grouped as by the group of following parts by weight: 80-90 parts of red mud, 10-20 parts of red mud modifying agent, 0-10 parts of chemical solvent；The red mud modifying agent is the mixture of one or more of calcium hydroxide, flyash, cement, antistripping agent, the chemical solvent is the mixture of one or more of methanol, ethyl alcohol, normal propyl alcohol, isopropanol, or, the chemical solvent is the mixture of one or more of silane coupling agent, titanate coupling agent, aluminate coupling agent.Miberal powder is replaced to prepare asphalt using the red mud of chemical modification, on the one hand a series of societies, environmental problem caused by red mud is stored up on a large scale are alleviated, on the other hand the alternative materials for having opened up super quality and competitive price for bituminous mixture again, have significant economic benefit and social benefit.
Description
Technical field
The present invention relates to road engineering material and its preparation field, the drip that a kind of chemical modification red mud replaces miberal powder is provided
Green mixture and preparation method thereof.
Background technique
Red mud is that aluminium industry extracts the pollution waste residue being discharged when aluminium oxide, under normal circumstances 1 ton of aluminium oxide of every production
0.8~2.0 ton of red mud will be generated.Up to now, the red mud amount of Chinese festiva discharge accumulates red mud storage just up to 30,000,000 tons
Up to 3.5 hundred million tons, and its utilization rate is only 15% or so.Red mud pilling not only needs certain capital cost, and occupies big
Soil is measured, environment is polluted, and utilize many in red mud can cannot rationally using ingredient, causes the secondary waste of resource,
Therefore, red mud pilling and harm are reduced to greatest extent, realize that resource utilization is extremely urgent by all kinds of means, on a large scale.
How processing is carried out to large industrial solid wastes volumes such as red muds and comprehensive utilization is focus concerned by people.In sternness
Resource pressure and stringent environmental requirement under, the preparation cost of road engineering material field Asphalt Mixture is increasingly
Height, the difficulty of the acquisition of raw material also further.Red mud its physico-mechanical properties, particle form etc. in road asphalt mixture
Miberal powder used has similar performance, and some scholars study application of the red mud in asphalt before this.Therefore,
It not only can protect environment by its large-scale application in highway engineering construction using red mud exploitation new road material, but also
Solid state fermentation amount is big, industrial production is at low cost, is large industrial solids such as a large amount of consumption of current realization and non-pollution discharge red mud
The effective way of waste.
Miberal powder is mineral pellet of the partial size less than 0.074 millimeter, is chiefly used in bituminous concrete and bituminous macadam pavement, is made
With being filling gap, prevents pitch from trickling, enhance the cohesive force and thermal stability of asphalt material.Miberal powder will also have good with pitch
Good affinity (i.e. adhesion strength), can resist the corrosion function of water.Since red mud is the waste material generated during producing aluminium, without
The red mud alkalinity of processing is very high, and cannot as miberal powder and pitch carry out it is good it is affine with mutually melt, cannot directly replace
Miberal powder is used to prepare asphalt for road.
Summary of the invention
In order to solve the technical problems existing in the prior art, the object of the present invention is to provide a kind of chemical modification red mud generations
For the asphalt and preparation method thereof of miberal powder, miberal powder is replaced using the red mud of chemical modification to prepare asphalt, one
Aspect alleviates a series of societies, environmental problem caused by red mud is stored up on a large scale, is on the other hand again bituminous mixture
The alternative materials of super quality and competitive price have been opened up, there is significant economic benefit and social benefit.
In order to solve the above technical problems, the technical solution of the present invention is as follows:
A kind of chemical modification red mud, is grouped as by the group of following parts by weight: 80-90 parts of red mud, red mud modifying agent 10-20
Part, 2-10 parts of chemical solvent；The red mud modifying agent is one or more of calcium hydroxide, flyash, cement, antistripping agent
Mixture, the chemical solvent is the mixture of one or more of methanol, ethyl alcohol, normal propyl alcohol, isopropanol, or, describedization
Solvent is the mixture of one or more of silane coupling agent, titanate coupling agent, aluminate coupling agent.
Since red mud alkali metal content is high, cannot have the excellent performance as limestone dust, by utilizing red mud
Modifying agent combines red mud and red mud modifying agent by the effect of chemical solvent, thus reach it is similar with miberal powder or
There is more excellent performance than miberal powder.
Chemical solvent plays the role of coupling connection, red mud and red mud modifying agent can will be of coupled connections, and make it
It is effectively dispersed in pitch, to form more stable structure.
When chemical solvent is one or more of methanol, ethyl alcohol, normal propyl alcohol or isopropanol, obtained chemical modification is red
Mud is water-soluble chemical changed red mud, when chemical solvent is silane coupling agent, titanate coupling agent, one in aluminate coupling agent
When planting or is several, obtained chemical modification red mud is oil-soluble chemical modification red mud.
Preferably, the red mud is the mixed of one or more of red mud from sintering process, Bayer process red mud or combination method red mud
Close object.
Red mud is carried out to dry levigate processing, granularity meets in " standard specification for construction and acceptance of highway asphalt pavement " one to filler
It is required that and appearance without granule agglomerate.
Preferably, the chemical modification red mud, is grouped as by the group of following parts by weight: 80-85 parts of red mud, red mud modifying agent
10-15 parts, 2-5 parts of chemical solvent.
Preferably, the chemical modification red mud, is grouped as by the group of following parts by weight: 85-90 parts of red mud, red mud modifying agent
15-20 parts, 5-10 parts of chemical solvent.
The preparation method of the chemical modification red mud, includes the following steps:
1) red mud is crushed, dries, is levigate, it is spare；
2) in mass ratio it is that 0-1:1-2:8-9 is uniformly mixed with water by chemical solvent, red mud modifying agent and red mud, water and changes
The mass ratio for learning solvent, red mud modifying agent and red mud quality sum is 5-10:1；
3) mixed liquor obtained in step 2) is filtered, and by solid portion drying, crushing to get chemical modification red mud.
Preferably, in step 2), the time that chemical solvent, red mud modifying agent, red mud and water mix is 10~15min.
Preferably, in step 1) and step 3), the temperature of drying is 105 DEG C.
It is a kind of using the chemical modification red mud as the asphalt of filler, be grouped as by the group of following parts by weight:
20-90 parts of coarse aggregate, 20-80 parts of fine aggregate, 2-8 parts of pitch, 2-8 parts of filler, wherein filler is chemical modification red mud.
Preferably, the asphalt is grouped as by the group of following parts by weight: being gathered materials 70-110 parts, 4-6 parts of pitch, is filled out
2-6 parts of material.
The preparation method of the asphalt, includes the following steps:
1) by levigate chemical modification red mud at 160-180 DEG C pre- stand-by heat；
2) it after setting time being mixed at 160-180 DEG C in coarse aggregate and fine aggregate, is stirred for after pitch is added
It is even；
3) the chemical modification red mud after preheating in step 1) is added in the mixture in step 2), stirs setting time
Afterwards to get asphalt for road.
Preferably, in step 2), time of mixing is 25-35s, and in step 3), the time of stirring is 55-65s.
Preheating in step 1) and step 2) is to be easier to be mixed and stirred because of asphalt at this temperature, warm herein
The lower preheating of degree mainly prevents from making the reduction of mixture whipping temp after addition changed red mud, causes filler distribution uneven.
The beneficial effects of the present invention are:
(1) it can not only be protected by its large-scale application in highway engineering construction using red mud exploitation new road material
Retaining ring border, and waste residue can be largely handled, reduce construction cost and industrial production cost.
(2) preparation method of the present invention and required equipment are simple, easy to operate, and convenient for control, raw material and instrument are set technological parameter
It is low etc. for use cost.
(3) in the present invention in chemical modification red mud formula and preparation process, the chemical solvent of use can play an idol
The effect of connection is closed, it can be effectively connected two kinds of different substances of property or affinity, it is made to be effectively dispersed in organic high score
In sub- material matrix, to form more stable structure.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
A kind of chemical modification red mud, is composed of the following raw materials in parts by weight: 80~90 parts of the red mud, red mud modifying agent 10
~20 parts, 0~10 part of chemical solvent.
In some embodiments, 80~85 parts of red mud, 10~15 parts of red mud modifying agent, 0~5 part of chemical solvent.
In some embodiments, 85~90 parts of red mud, 15~20 parts of red mud modifying agent, 5~10 parts of chemical solvent.
In some embodiments, the industrial pollution being discharged when the red mud is aluminium industry extraction aluminium oxide is discarded
Object.Red mud is carried out to dry levigate processing, granularity meets the requirement in " standard specification for construction and acceptance of highway asphalt pavement " one to filler,
And appearance is agglomerated without granule.
In some embodiments, the red mud be red mud from sintering process, Bayer process red mud, it is a kind of or several in combination method red mud
The mixture of kind.
In some embodiments, the red mud modifying agent be one of calcium hydroxide, flyash, cement, antistripping agent or
Several mixtures.
In some embodiments, the chemical solvent is one or more of methanol, ethyl alcohol, normal propyl alcohol, isopropanol；
In some embodiments, the chemical solvent is silane coupling agent, in titanate coupling agent, aluminate coupling agent
It is one or more of.
The present invention also provides a kind of for replacing the oil of miberal powder molten or the preparation method of water-soluble changed red mud, comprising:
1) after red mud being carried out conventional be crushed, drying is carried out under the conditions of 105 DEG C and levigate to " asphalt highway construction
Technical specification " in partial size required by filler, it is spare；
2) by 0-1 parts of chemical solvent, 1-2 parts of red mud modifying agent, 8-9 parts of red mud, be added sequentially in a certain amount of water with
The revolving speed of 800-900rpm is stirred to forming homogeneous aqueous solution, the quality and chemical solvent, red mud modifying agent, red mud of water in solution
The ratio of three's mass sum is 5-10:1；
3) aqueous solution is poured into bottle,suction and is filtered, filter residue is placed in 105 DEG C together with filter paper after the completion of suction filtration
3h is dried in the baking oven of condition.
4) filter residue is taken out together with filter paper, after removing filter paper, modified red mud is crushed and levigate to " public
Road Asphalt Pavement Construction Technique specification " in partial size required by filler, obtain the molten changed red mud of oil.
It is a kind of using red mud as the asphalt of filler, including coarse aggregate, fine aggregate, pitch and filler, with weight
It part is unit, the weight proportion of each component is respectively as follows: 20-90 parts of coarse aggregate, and 20-80 parts of fine aggregate, 2-8 parts of pitch, filler 2-8
Part, wherein filler is the red mud of chemical modification
The preparation method of asphalt recited above, the specific steps of which are as follows:
(1) filler of the levigate modified red mud after 105 DEG C of drying as asphalt is spare, when use, will fill out
Material pre- stand-by heat at 160-180 DEG C；
(2) 30s is mixed at 160-180 DEG C in coarse aggregate and fine aggregate, is then added according to match ratio described heavy
The road asphalt of amount part is stirred for uniformly；
(3) filler after preheating is added in mixture prepared in step (2) and stirs 60s to get bitumen for road use
Mixture.
Below with reference to embodiment, the present invention is further described, and implementation is raw materials used to be all made of ommercially available AR.
Embodiment 1
Each raw material composition and mass percent proportion of the changed red mud of the embodiment of the present invention are as follows: red mud from sintering process
80%, calcium hydroxide 15%, titanate coupling agent 5%.
The preparation method is as follows:
(1) by red mud from sintering process carry out it is conventional broken after, drying and levigate to " highway asphalt is carried out under the conditions of 105 DEG C
Pavement construction technical specification " in partial size required by filler, it is spare；
(2) titanate coupling agent, calcium hydroxide, red mud from sintering process are added sequentially to be formed in a certain amount of water uniformly water-soluble
Liquid, the quality of water and titanate coupling agent in solution, calcium hydroxide, red mud from sintering process three mass and ratio be 10:1；
(3) aqueous solution is poured into bottle,suction and is filtered, filter residue is placed in 105 DEG C together with filter paper after the completion of suction filtration
3h is dried in the baking oven of condition.
(4) filter residue is taken out together with filter paper, after removing filter paper, by modified red mud be crushed and it is levigate extremely
To partial size required by filler in " standard specification for construction and acceptance of highway asphalt pavement ", the water-soluble changed red mud is obtained.
According to the AC-13 type gradation in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004), thickness is gathered materials
Using basalt, pitch uses SBS modified pitch, and the changed red mud volume instead of miberal powder of the embodiment of the present invention is 6%, oilstone
Than being 5%.By the test method test in " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTJ052-2000) standard
Dynamic stability, low temperature damage strain and freeze-thaw split intensity ratio, the performance test results are shown in Table 1.
Embodiment 2
Each raw material composition and mass percent proportion of the changed red mud of the embodiment of the present invention are as follows: red mud from sintering process
80%, calcium hydroxide 15%, isopropanol 5%.
The preparation method is as follows:
(1) by red mud from sintering process carry out it is conventional broken after, drying and levigate to " highway asphalt is carried out under the conditions of 105 DEG C
Pavement construction technical specification " in partial size required by filler, it is spare；
(2) isopropanol, calcium hydroxide, red mud from sintering process are added sequentially to form homogeneous aqueous solution in a certain amount of water, it is molten
The quality of water and titanate coupling agent in liquid, calcium hydroxide, red mud from sintering process three mass and ratio be 10:1；
(3) aqueous solution is poured into bottle,suction and is filtered, filter residue is placed in 105 DEG C together with filter paper after the completion of suction filtration
3h is dried in the baking oven of condition.
(4) filter residue is taken out together with filter paper, after removing filter paper, by modified red mud be crushed and it is levigate extremely
To partial size required by filler in " standard specification for construction and acceptance of highway asphalt pavement ", the molten changed red mud of oil is obtained.
According to the AC-13 type gradation in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004), thickness is gathered materials
Using basalt, pitch uses SBS modified pitch, and the changed red mud volume instead of miberal powder of the embodiment of the present invention is 6%, oilstone
Than being 5%.By the test method test in " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTJ052-2000) standard
Dynamic stability, low temperature damage strain and freeze-thaw split intensity ratio, the performance test results are shown in Table 1.
Embodiment 3
According to the AC-13 type gradation in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004), thickness is gathered materials
Using basalt, pitch uses SBS modified pitch, contents of ground slag 6%, bitumen aggregate ratio 5%.By " highway engineering pitch and drip
Green test mixture regulation " test method test dynamic stability in (JTJ052-2000) standard, low temperature damage strain and freeze
Melt Ratio of split strength, the performance test results are shown in Table 1.
Embodiment 4
With being distinguished as embodiment 1, calcium hydroxide is replaced with into flyash, it is other same as Example 1.The pitch of preparation is mixed
It is as shown in table 1 to close the performances such as dynamic stability, low temperature damage strain and the freeze-thaw split intensity ratio of material.
Embodiment 5
With being distinguished as embodiment 1, calcium hydroxide is replaced with into cement, it is other same as Example 1.The pitch of preparation mixes
The performances such as dynamic stability, low temperature damage strain and the freeze-thaw split intensity ratio of material are as shown in table 1.
Embodiment 6
With being distinguished as embodiment 1, titanate coupling agent is replaced with into water, it is other same as Example 1.The pitch of preparation
The performances such as dynamic stability, low temperature damage strain and the freeze-thaw split intensity ratio of mixture are as shown in table 1.
1 embodiment 1- embodiment of table, 6 the performance test results
| Project | AC-13 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| Dynamic stability (secondary/mm) | 2785 | 5985 | 4968 | 5675 | 4960 | 5750 | 2950 |
| Low temperature damage strains (μ ε) | 2500 | 3686 | 2860 | 3250 | 3175 | 4037 | 2598 |
| Freeze-thaw split intensity ratio (%) | 82.5 | 92.1 | 86.5 | 87 | 83.5 | 91.5 | 84 |
The pitch mixing of chemical modification of embodiment of the present invention red mud substitution miberal powder it can be seen from the above the performance test results
Dynamic stability, low temperature damage strain, the freeze-thaw split intensity of material than being able to satisfy, even more than " construct by asphalt highway
Technical specification " in associated specifications, illustrate that the Asphalt Mixture Performance of method provided by the invention preparation is excellent, value
It must promote and use.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. a kind of chemical modification red mud, it is characterised in that: be grouped as by the group of following parts by weight: 80-90 parts of red mud, red mud is modified
10-20 parts of agent, 2-10 parts of chemical solvent；The red mud modifying agent is one of calcium hydroxide, flyash, cement, antistripping agent
Or several mixtures, the chemical solvent are the mixture of one or more of methanol, ethyl alcohol, normal propyl alcohol, isopropanol,
Or, the chemical solvent is the mixture of one or more of silane coupling agent, titanate coupling agent, aluminate coupling agent.
2. chemical modification red mud according to claim 1, it is characterised in that: the red mud is red mud from sintering process, Bayer process
The mixture of one or more of red mud or combination method red mud.
3. chemical modification red mud according to claim 1, it is characterised in that: be grouped as by the group of following parts by weight: red mud
80-85 parts, 10-15 parts of red mud modifying agent, 2-5 parts of chemical solvent.
4. chemical modification red mud according to claim 1, it is characterised in that: be grouped as by the group of following parts by weight: red mud
85~90 parts, 15~20 parts of red mud modifying agent, 5~10 parts of chemical solvent.
5. the preparation method of any chemical modification red mud of claim 1-4, characterized by the following steps:
1) red mud is crushed, dries, is levigate, it is spare；
It 2) is in mass ratio that 0-1:1-2:8-9 is uniformly mixed with water by chemical solvent, red mud modifying agent and red mud, water and chemical solution
The mass ratio of agent, red mud modifying agent and red mud quality sum is 5-10:1；
3) mixed liquor obtained in step 2) is filtered, and by solid portion drying, crushing to get chemical modification red mud.
6. preparation method according to claim 5, it is characterised in that: chemical solvent, red mud modifying agent, red in step 2)
The time that mud and water mix is 10~15min.
7. a kind of using the chemical modification red mud as the asphalt of filler, it is characterised in that: by following parts by weight
Group is grouped as: 20-90 parts of coarse aggregate, 20-80 parts of fine aggregate, 2-8 parts of pitch, 2-8 parts of filler, wherein filler is that chemical modification is red
Mud.
8. asphalt according to claim 8, it is characterised in that: be grouped as by the group of following parts by weight: gather materials 70-
110 parts, 4-6 parts of pitch, 2-6 parts of filler.
9. the preparation method of the asphalt of claim 7 or 8, characterized by the following steps:
1) by levigate chemical modification red mud at 160-180 DEG C pre- stand-by heat；
2) it after setting time being mixed at 160-180 DEG C in coarse aggregate and fine aggregate, is stirred for uniformly after pitch is added；
3) the chemical modification red mud after preheating in step 1) is added in the mixture in step 2), after stirring setting time,
Up to asphalt for road.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642555A (en) * | 2019-10-15 | 2020-01-03 | 山东大学 | Red mud-based nano anti-stripping agent and preparation method and application thereof |
| CN111499240A (en) * | 2020-03-16 | 2020-08-07 | 山东大学 | Red mud fiber composite material, preparation method thereof and application thereof in modified asphalt |
| CN112010586A (en) * | 2020-08-25 | 2020-12-01 | 广西路建工程集团有限公司 | Red mud desalted sea sand AC-16 asphalt mixture and preparation method thereof |
| CN114988763A (en) * | 2022-06-01 | 2022-09-02 | 山东大学 | Method for improving water stability of asphalt mixture by compounding coal pitch and red mud |
| CN115087707A (en) * | 2021-05-07 | 2022-09-20 | 德州学院 | Method for preparing composite pigment filler for coating by using red mud |
| CN116254005A (en) * | 2023-02-09 | 2023-06-13 | 山东大学 | Preparation method of self-chemically-modified high half-life synergistic foaming foamed asphalt |
| CN116410623A (en) * | 2023-05-05 | 2023-07-11 | 水利部交通运输部国家能源局南京水利科学研究院 | Preparation method of carbonized modified red mud-based hydrophobic concrete coating |
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