CN109627797A - Useless edible soybean oil and the composite regenerated pitch of graphene oxide and preparation method thereof - Google Patents
Useless edible soybean oil and the composite regenerated pitch of graphene oxide and preparation method thereof Download PDFInfo
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- CN109627797A CN109627797A CN201811621227.2A CN201811621227A CN109627797A CN 109627797 A CN109627797 A CN 109627797A CN 201811621227 A CN201811621227 A CN 201811621227A CN 109627797 A CN109627797 A CN 109627797A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a kind of useless edible soybean oils and the composite regenerated pitch of graphene oxide, are matched and are counted according to mass fraction by following components: 30~40 parts of recycling pitches；20~40 parts of new pitch；0.02~0.5 part of graphene oxide；10~20 parts of useless edible soybean oils；6~8 parts of waste Crumb rubbers；3.0~5.0 parts of thermoplastic elastomers；3.0~4.0 parts of plasticizer；0.6~0.8 part of stabilizer.The invention also discloses the preparation methods of useless edible soybean oil and the composite regenerated pitch of graphene oxide, including prepare graphene oxide modified pitch, prepare composite regenerated pitch first sample, three steps of regeneration asphalt are made；Its preparation process is simple, and gained regeneration asphalt has good caking property, mobility and ductility, and includes a large amount of waste and old raw materials, cheap, energy conservation and environmental protection in formula.
Description
Technical field
The invention belongs to the wastes of environment protection field to recycle field, and in particular to a kind of useless edible soybean oil and oxidation stone
Black composite regenerated pitch of alkene and preparation method thereof.
Background technique
With the rapid development of highway communication cause, the construction of bituminous pavement also rapidly increases, according to China Expressway
Design life and practical duty status, the highway built up successively after the nineties entered it is big or middle repair the phase, every year
It needs repairing maintenance there are about 12% asphalt pavement of highway, and is increased with annual 15% speed.If will dig, milling
Old asphalt mixture is discarded, on the one hand causes environmental pollution, on the other hand the extremely deficient state of high-quality asphalt this for China
For family it is a kind of waste of resource, and largely uses new pitch, exploitation petroleum can also does great damage to ecological environment.
Regeneration is carried out to waste asphalt pavement material, not only can be reduced, save Master Cost and construction investment, but also can be reduced environment dirt
Dye reduces energy consumption, sustainable development to society and preserves the ecological environment and is of great significance and is worth.
Gutter oil event in China's takes place frequently in recent years, seriously endangers people's physical and mental health, the whole society has been caused to pay close attention to.Trench
Oil refers to all kinds of poor oils in people's life, and main component is still triglycerides, but many causes more than edible oil
Sick, carcinogenic toxicant, if main harm object aflatoxins is a kind of strong carcinogen, toxicity is 100 times of arsenic；Ground
The toxin that ditch oil contains, which flows to rivers, will cause water nutrition, and long-term consumption can cause human body obviously to injure, such as development barrier
Hinder, be susceptible to suffer from enteritis, and with liver, the heart and the lesions such as kidney enlargement and fatty liver.China is to gutter oil raw material, that is, waste edible oil
Processing recycling also lacks the administrative mechanism of system perfecting, and the optimum method for solving " gutter oil " reflux dining table is exactly to its raw material-
Waste edible oil is comprehensively utilized.
Chinese patent CN102585529A provide it is a kind of using waste edible oil prepare bitumen regenerant and its preparation work
85~95% waste edible oils are heated to 120~140 DEG C by skill, are separately added into 2~5% plasticizer, 2~5% stabilizers in the temperature
20~40min is stirred with 1~5% age resister, bitumen regenerant is made after cooling.The method disadvantage first is that selected useless edible
Oil frying oils for recycling waste oil or repeatedly, not yet explicitly waste oil type and source, main component and content can not be unified, in turn
It is difficult to control its regeneration effect to aged asphalt, regeneration efficiency is caused to reduce；Second is that stabilizer selects Sasobit or sulphur can
It is obviously improved the high-temperature stability of regeneration asphalt, but has inhibiting effect to low-temperature cracking-resistance, thus its use scope is limited.
Summary of the invention
In view of the deficiencies of the prior art, there is provided a kind of useless edible soybean oil and graphene oxides for the first purpose by the present invention
Composite regenerated pitch.
Second object of the present invention is to provide a kind of useless edible soybean oil and the composite regenerated pitch of graphene oxide
Preparation method.
In order to achieve the above objectives, solution of the invention is:
A kind of useless edible soybean oil and the composite regenerated pitch of graphene oxide are matched according to mass fraction by following components and are counted:
30~40 parts of recycling pitches；
20~40 parts of new pitch；
0.05~0.2 part of graphene oxide；
10~20 parts of useless edible soybean oils；
6~8 parts of waste Crumb rubbers；
3.0~5.0 parts of thermoplastic elastomers；
3.0~4.0 parts of plasticizer；
0.6~0.8 part of stabilizer.
Under preferable performance, the component is matched according to following mass fraction and is counted:
30 parts of recycling pitches；
40 parts of new pitch；
0.05 part of graphene oxide；
15 parts of useless edible soybean oils；
7 parts of waste Crumb rubbers；
3.5 parts of thermoplastic elastomers；
3.0 parts of plasticizer；
0.7 part of stabilizer.
The recycling pitch is to be recycled from waste asphalt pavement material by the method for solvent extraction and rotary evaporation
Aged asphalt.
The new pitch is 70# matrix pitch.
The graphene oxide is made using Hummers method, and interlamellar spacing is 0.7~1.2nm, specific surface area 2100
~2600m2/g。
The useless edible soybean oil is triglycerides, oxygen element content from waste oil, main component is fried repeatedly
About 40%~50%, moisture and volatile matter content content is less than 0.2%.
The waste Crumb rubber derives from waste and old truck tire, and main component is butadiene-styrene rubber, and grain fineness is 80 mesh.
The thermoplastic elastomer is Styrene-Butadiene-Styrene Block Copolymer (SBS), star-like, block ratio S/B=
30/70, molecular weight 14~300,000.
The plasticizer is dibutyl phthalate.
The stabilizer is peroxide diisopropylbenzene (DIPB).
A kind of preparation method of useless edible soybean oil and the composite regenerated pitch of graphene oxide, including following preparation step:
Step 1, it is heated after new pitch being mixed in proportion with recycling pitch, graphite oxide is added into the mix asphalt after heating
Alkene, clipped, stirring, obtains graphene oxide modified pitch；
Step 2, sequentially added in the graphene oxide modified pitch that Xiang Suoshu step 1 obtains useless edible soybean oil, waste Crumb rubber,
Thermoplastic elastomer, plasticizer, clipped, stirring, obtain composite regenerated pitch first sample；
Step 3, stabilizer is added in the composite regenerated pitch first sample that Xiang Suoshu step 2 obtains, agitated, regeneration is made in swelling
Pitch.
Under preferable performance, heating temperature described in step 1 is 150~160 DEG C；Shear rate be 2500 ±
500r/min, shear time are 15 ± 5min；Mixing time is 20 ± 5min.
Under preferable performance, shear rate described in step 2 be 3500 ± 500r/min, shear time be 20 ±
5min；Mixing time is 30 ± 5min.
Under preferable performance, mixing time described in step 3 is 15 ± 5min；Swelling temperature is 150~160 DEG C,
Swelling time is 50-60min.
The beneficial effects of the present invention are:
1. the aged asphalt that the invention is suitable for various waste asphalt pavement material recoveries regenerates, preparation process is simple,
Gained regeneration asphalt has good caking property, mobility and ductility, and includes a large amount of waste and old raw materials in formula, cheap,
Energy conservation and environmental protection；
2. graphene oxide plays age resister and solubilizer in regeneration asphalt, graphene oxide specific surface area greatly and
With oxygen-containing functional group abundant, so that it is easily formed hydrogen bond with the component in pitch and generate Van der Waals force, graphene oxide
It can macromolecular substances (such as colloid and asphalitine) in quick adsorption aged asphalt；Contain a large amount of rouge in useless edible soybean oil
Fat acid, is a kind of grease, has the characteristics that flash-point is high, viscosity is low, yield is big, price is low, while having been subjected to high-temperature cooking process,
With preferable heat resistance, during preparing regeneration asphalt, useless edible soybean oil acts as small molecule solvent；The same aging of the two
Pitch acts synergistically together, is not only improving asphaltene dissolution degree and rigidity that is infiltrative while reducing aged asphalt, and
It is swollen the aged asphalt matter in gel state, the interaction between macromolecular components is promoted, enhances the flexible of pitch
Property, it significantly increases in terms of viscosity, resistance to permanent deformation and spring function, and improve mixing for aged asphalt and other additives
Property, while pitch also a small amount of harmful substance remaining in curable waste edible oil, therefore, this three lacks when preparing regeneration asphalt
One can not；
3. waste Crumb rubber used in the present invention derives from junk vehicle tire, powdered is obtained after mechanical crushing is handled
Grain, main component are butadiene-styrene rubber, and it is that good aged asphalt increases that waste Crumb rubber, which plays a part of to increase in regeneration asphalt, which prolongs agent,
Prolong agent；
It 4. the stabilizer that the present invention is eventually adding is peroxide diisopropylbenzene (DIPB), is avoided to neutralize the unreacted plasticizer in part
Excessively crosslinking；
5. main component recycling pitch, useless edible soybean oil and the waste Crumb rubber in regeneration asphalt of the present invention are waste material, belong to
Waste and old resource recycles, economy, obvious environment benefit, has extensive popularization and application foreground；Realize the regenerated main side of pitch
Method is to reduce the asphalitine relative amount in aged asphalt by addition bitumen regenerant and other adjuvants, improve pitch
Compatibility, and then the needle penetration and ductility of pitch are improved, restore it or close to original performance；The method of the present invention is simple, valence
Lattice are cheap, easy to implement.
Specific embodiment
Principle analysis:
Basic principle of the invention are as follows: as novel c-based nanomaterial, graphene oxide specific surface area is greatly and with abundant
Oxygen-containing functional group, form it easily with the component in pitch and hydrogen bond and generate Van der Waals force, so minimal amount of oxidation stone
Black alkene can macromolecular substances (such as colloid and asphalitine) in quick adsorption aged asphalt, in viscosity, anti-permanent become
It is significantly increased in terms of shape and spring function, and improves the intermiscibility of aged asphalt Yu other additives.In addition, graphene oxide has
Have unique two-dimensional layered structure (structural formula is as follows), can be formed in pitch " intercalation " construction insulation oxygen oxidation and
Ultraviolet radiation, and then improve the anti-aging property of modified pitch.
During preparing regeneration asphalt, useless edible soybean oil acts as small molecule solvent, improve asphaltene dissolution degree and
Rigidity that is infiltrative while reducing aged asphalt, and it is swollen the aged asphalt matter in gel state, thus promote
Interaction between macromolecular components enhances the flexibility of pitch.
Thermoplastic elastomer and butadiene-styrene rubber generate physics and chemical crosslinking with pitch each component under the action of plasticizer, together
When promote each component form stable cubic network colloid structure；The stabilizer being eventually adding can neutralize the unreacted increasing in part
Agent is moulded, avoids excessively being crosslinked.
For a better understanding of the present invention, below with reference to table 1,2,3 and the specific embodiment skill that the present invention is further explained
Art scheme.Raw material used in following embodiment is as follows: recycling pitch is using waste asphalt of the solvent extraction method from recycling
The aged asphalt recycled in ground surface material (RAP), technical indicator are shown in Table 1.New pitch is that the just sincere petrochemical industry of Maoming City is limited
The high richness 70# matrix pitch of company's production, technical indicator are shown in Table 2.Graphene oxide be laboratory in Hummers method from
System, interlamellar spacing are 0.7~1.2nm, and specific surface area is 2100~2600m2/g；Useless edible soybean oil is decocted repeatedly from KFC
Fried waste oil, main component is triglycerides, and oxygen element content is about 40%~50%, and moisture and volatile matter content content is less than 0.2%.It is useless
Rubber powder is produced by Qingdao greenery company, and main component is butadiene-styrene rubber, and grain fineness is 80 mesh；Thermoplastic elastomer is Yueyang stone
The road for being combined to rubber plant's production changes No. two star-like modifying agent, block ratio S/B=30/70, molecular weight 14~300,000；Plasticizer is
The dibutyl phthalate of Yancheng City Shuan Hong Chemical Industry Science Co., Ltd production, ester content > 99%, acidity < 0.015%；Surely
Determine the peroxide diisopropylbenzene (DIPB) that agent is the production of Zibo City Sheng Ying Chemical Co., Ltd., DCP content is 55%.
Table 1 recycles bitumen technology index
2 new pitch technical indicator of table
Embodiment 1:
Useless edible soybean oil and the composite regenerated pitch of graphene oxide, are matched according to mass fraction by following components and are counted:
30 parts of recycling pitches；
40 parts of new pitch；
0.05 part of graphene oxide；
15 parts of useless edible soybean oils；
7 parts of waste Crumb rubbers；
3.5 parts of thermoplastic elastomers；
3.0 parts of plasticizer；
0.7 part of stabilizer.
The preparation method of useless edible soybean oil and the composite regenerated pitch of graphene oxide, including following preparation step:
Step 1,160 DEG C are heated to after new pitch being mixed in proportion with recycling pitch, is added into the mix asphalt after heating
Graphene oxide stirs 20min after shearing 15min with the rate of 2500r/min, obtains graphene oxide modified pitch.
Step 2, useless edible soybean oil, useless rubber are sequentially added in the graphene oxide modified pitch that Xiang Suoshu step 1 obtains
Rubber powder, thermoplastic elastomer, plasticizer stir 30min after shearing 20min with the rate of 3500r/min, obtain composite regenerated pitch
First sample.
Step 3, stabilizer is added in the composite regenerated pitch first sample that Xiang Suoshu step 2 obtains, 15min is stirred, at 150 DEG C
Regeneration asphalt is made in lower swelling 60min.
Embodiment 2:
Useless edible soybean oil and the composite regenerated pitch of graphene oxide, are matched according to mass fraction by following components and are counted:
35 parts of recycling pitches；
30 parts of new pitch；
0.1 part of graphene oxide；
10 parts of useless edible soybean oils；
6 parts of waste Crumb rubbers；
3.5 parts of thermoplastic elastomers；
4.0 parts of plasticizer；
0.8 part of stabilizer.
The preparation method of useless edible soybean oil and the composite regenerated pitch of graphene oxide, including following preparation step:
Step 1,150 DEG C are heated to after new pitch being mixed in proportion with recycling pitch, is added into the mix asphalt after heating
Graphene oxide stirs 15min after shearing 20min with the rate of 2000r/min, obtains graphene oxide modified pitch.
Step 2, be added in the graphene oxide modified pitch that Xiang Suoshu step 1 obtains useless edible soybean oil, waste Crumb rubber,
Thermoplastic elastomer, plasticizer stir 35min after shearing 25min with the rate of 3000r/min, obtain composite regenerated pitch first sample.
Step 3, stabilizer is added in the composite regenerated pitch first sample that Xiang Suoshu step 2 obtains, 15min is stirred, at 160 DEG C
Regeneration asphalt is made in lower swelling 50min.
Embodiment 3:
Useless edible soybean oil and the composite regenerated pitch of graphene oxide, are matched according to mass fraction by following components and are counted:
40 parts of recycling pitches；
30 parts of new pitch；
0.05 part of graphene oxide；
15 parts of useless edible soybean oils；
7 parts of waste Crumb rubbers；
3.0 parts of thermoplastic elastomers；
3.5 parts of plasticizer；
0.7 part of stabilizer.
The preparation method of useless edible soybean oil and the composite regenerated pitch of graphene oxide, including following preparation step:
Step 1,155 DEG C are heated to after new pitch being mixed in proportion with recycling pitch, is added into the mix asphalt after heating
Graphene oxide stirs 25min after shearing 15min with the rate of 3000r/min, obtains graphene oxide modified pitch.
Step 2, be added in the graphene oxide modified pitch that Xiang Suoshu step 1 obtains useless edible soybean oil, waste Crumb rubber,
Thermoplastic elastomer, plasticizer stir 25min after shearing 15min with the rate of 3700r/min, obtain composite regenerated pitch first sample.
Step 3, stabilizer is added in the composite regenerated pitch first sample that Xiang Suoshu step 2 obtains, 10min is stirred, at 155 DEG C
Lower swelling 55min.
Embodiment 4:
Useless edible soybean oil and the composite regenerated pitch of graphene oxide, are matched according to mass fraction by following components and are counted:
35 parts of recycling pitches；
35 parts of new pitch；
0.2 part of graphene oxide；
20 parts of useless edible soybean oils；
8 parts of waste Crumb rubbers；
5.0 parts of thermoplastic elastomers；
4.0 parts of plasticizer；
0.6 part of stabilizer.
The preparation method of useless edible soybean oil and the composite regenerated pitch of graphene oxide, including following preparation step:
Step 1,155 DEG C are heated to after new pitch being mixed in proportion with recycling pitch, is added into the mix asphalt after heating
Graphene oxide stirs 25min after shearing 20min with the rate of 2800r/min, obtains graphene oxide modified pitch.
Step 2, be added in the graphene oxide modified pitch that Xiang Suoshu step 1 obtains useless edible soybean oil, waste Crumb rubber,
Thermoplastic elastomer, plasticizer stir 30min after shearing 20min with the rate of 4000r/min, obtain composite regenerated pitch first sample.
Step 3, stabilizer is added in the composite regenerated pitch first sample that Xiang Suoshu step 2 obtains, 20min is stirred, at 160 DEG C
Lower swelling 50min.
Embodiment 5:
Edible soybean oil and the composite regenerated pitch of graphene oxide are matched according to mass fraction by following components and are counted:
35 parts of recycling pitches；
20 parts of new pitch；
0.05 part of graphene oxide；
15 parts of useless edible soybean oils；
7 parts of waste Crumb rubbers；
4.0 parts of thermoplastic elastomers；
3.5 parts of plasticizer；
0.7 part of stabilizer.
The preparation method of useless edible soybean oil and the composite regenerated pitch of graphene oxide, including following preparation step:
Step 1,150 DEG C are heated to after new pitch being mixed in proportion with recycling pitch, is added into the mix asphalt after heating
Graphene oxide stirs 15min after shearing 10min with the rate of 3000r/min, obtains graphene oxide modified pitch.
Step 2, be added in the graphene oxide modified pitch that Xiang Suoshu step 1 obtains useless edible soybean oil, waste Crumb rubber,
Thermoplastic elastomer, plasticizer stir 25min after shearing 15min with the rate of 3600r/min, obtain composite regenerated pitch first sample.
Step 3, stabilizer is added in the composite regenerated pitch first sample that Xiang Suoshu step 2 obtains, 20min is stirred, at 155 DEG C
Lower swelling 60min.
By each regeneration asphalt binder of above-described embodiment according to Chinese transportation portion " highway engineering pitch and asphalt
Testing regulations " standard method as defined in (JTG E20-2011) tests the performances such as its needle penetration, softening point, ductility, viscosity, it tests
It the results are shown in Table 3.
Each embodiment regeneration asphalt of table 3 and new pitch performance comparison
Table 3 statistics indicate that, each regeneration asphalt performance prepared by the present invention is all satisfied " standard specification for construction and acceptance of highway asphalt pavement "
(JTG F40-2017) bi tumenf orr oad technical requirements, respectively with the aged asphalt regeneration for comparing waste asphalt pavement material recovery
It works well.
The above-mentioned description to embodiment is understood for the ease of those skilled in the art and using the present invention.
Those skilled in the art easily can make various modifications to these embodiments, and General Principle described herein
It is applied in other embodiments, without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments.This field
Technical staff's principle according to the present invention, does not depart from improvement that scope of the invention is made and modification all should be of the invention
Within protection scope.
Claims (10)
1. a kind of useless edible soybean oil and the composite regenerated pitch of graphene oxide, which is characterized in that by following components according to quality
Number proportion meter:
30~40 parts of recycling pitches；
20~40 parts of new pitch；
0.05~0.2 part of graphene oxide；
10~20 parts of useless edible soybean oils；
6~8 parts of waste Crumb rubbers；
3.0~5.0 parts of thermoplastic elastomers；
3.0~4.0 parts of plasticizer；
0.6~0.8 part of stabilizer.
2. useless edible soybean oil according to claim 1 and the composite regenerated pitch of graphene oxide, which is characterized in that described
Recycling pitch are as follows: the aged asphalt recycled from waste asphalt pavement material by the method for solvent extraction and rotary evaporation；
The new pitch is 70# matrix pitch.
3. useless edible soybean oil according to claim 1 and the composite regenerated pitch of graphene oxide, which is characterized in that described
Graphene oxide using Hummers method be made, interlamellar spacing be 0.7~1.2nm, specific surface area be 2100~2600m2/g。
4. useless edible soybean oil according to claim 1 and the composite regenerated pitch of graphene oxide, which is characterized in that described
Useless edible soybean oil from waste oil is fried repeatedly, main component is triglycerides, and oxygen element content is about 40%~50%,
Moisture and volatile matter content content is less than 0.2%.
5. useless edible soybean oil according to claim 1 and the composite regenerated pitch of graphene oxide, which is characterized in that described
Waste Crumb rubber derive from waste and old truck tire, main component is butadiene-styrene rubber, and grain fineness is 80 mesh；The thermoplasticity rubber
Glue is Styrene-Butadiene-Styrene Block Copolymer, star-like, block ratio S/B=30/70, molecular weight 14~300,000.
6. useless edible soybean oil according to claim 1 and the composite regenerated pitch of graphene oxide, which is characterized in that described
Plasticizer be dibutyl phthalate；The stabilizer is peroxide diisopropylbenzene (DIPB).
7. the preparation side of any one useless edible soybean oil and the composite regenerated pitch of graphene oxide as described in claim 1-6
Method, which is characterized in that including following preparation step:
Step 1, it is heated after new pitch being mixed in proportion with recycling pitch, graphite oxide is added into the mix asphalt after heating
Alkene, clipped, stirring, obtains graphene oxide modified pitch；
Step 2, sequentially added in the graphene oxide modified pitch that Xiang Suoshu step 1 obtains useless edible soybean oil, waste Crumb rubber,
Thermoplastic elastomer, plasticizer, clipped, stirring, obtain composite regenerated pitch first sample；
Step 3, stabilizer is added in the composite regenerated pitch first sample that Xiang Suoshu step 2 obtains, agitated, regeneration is made in swelling
Pitch.
8. the useless preparation method with soybean oil and the composite regenerated pitch of graphene oxide according to claim 7, feature
It is, heating temperature described in step 1 is 150~160 DEG C；Shear rate be 2500 ± 500r/min, shear time be 15 ±
5min；Mixing time is 20 ± 5min.
9. the preparation method of useless edible soybean oil according to claim 7 and the composite regenerated pitch of graphene oxide, special
Sign is that shear rate described in step 2 is 3500 ± 500r/min, and shear time is 20 ± 5min；Mixing time be 30 ±
5min。
10. the preparation method of useless edible soybean oil according to claim 7 and the composite regenerated pitch of graphene oxide, special
Sign is that mixing time described in step 3 is 15 ± 5min；Swelling temperature is 150~160 DEG C, swelling time 50-60min.
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| CN110183147A (en) * | 2019-04-30 | 2019-08-30 | 中国建筑土木建设有限公司 | Asphalt mixture for environment-friendly road and preparation method thereof |
| CN114015252A (en) * | 2021-11-24 | 2022-02-08 | 新疆华雄再生资源科技有限公司 | Preparation method of plant modified asphalt serving as waterproof material |
| CN115029008A (en) * | 2022-05-30 | 2022-09-09 | 北京工业大学 | Preparation and use methods of high-performance asphalt regenerant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110183147A (en) * | 2019-04-30 | 2019-08-30 | 中国建筑土木建设有限公司 | Asphalt mixture for environment-friendly road and preparation method thereof |
| CN110183147B (en) * | 2019-04-30 | 2021-09-03 | 中国建筑土木建设有限公司 | Asphalt mixture for environment-friendly road and preparation method thereof |
| CN114015252A (en) * | 2021-11-24 | 2022-02-08 | 新疆华雄再生资源科技有限公司 | Preparation method of plant modified asphalt serving as waterproof material |
| CN115029008A (en) * | 2022-05-30 | 2022-09-09 | 北京工业大学 | Preparation and use methods of high-performance asphalt regenerant |
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Application publication date: 20190416 |