CN115650636B - Composite modified asphalt mixture and preparation method thereof - Google Patents
Composite modified asphalt mixture and preparation method thereof Download PDFInfo
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- CN115650636B CN115650636B CN202210816204.7A CN202210816204A CN115650636B CN 115650636 B CN115650636 B CN 115650636B CN 202210816204 A CN202210816204 A CN 202210816204A CN 115650636 B CN115650636 B CN 115650636B
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- 239000010426 asphalt Substances 0.000 title claims abstract description 92
- 239000000203 mixture Substances 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 51
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 47
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 43
- 239000010703 silicon Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 18
- 239000011707 mineral Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 125000000524 functional group Chemical group 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- KHLRJDNGHBXOSV-UHFFFAOYSA-N 5-trimethoxysilylpentane-1,3-diamine Chemical compound CO[Si](OC)(OC)CCC(N)CCN KHLRJDNGHBXOSV-UHFFFAOYSA-N 0.000 claims 1
- 238000000151 deposition Methods 0.000 claims 1
- 230000007062 hydrolysis Effects 0.000 claims 1
- 238000006460 hydrolysis reaction Methods 0.000 claims 1
- 239000012615 aggregate Substances 0.000 abstract description 15
- 239000007822 coupling agent Substances 0.000 abstract description 11
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 7
- 239000003607 modifier Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 125000005372 silanol group Chemical group 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a composite modified asphalt mixture and a preparation method thereof, aiming at solving the technical problems of high and low temperature diseases and water damage of asphalt pavement. The preparation raw materials mainly comprise mineral aggregate, asphalt, nano silicon nitride, silicon mud, coupling agent and the like, and the nano silicon nitride/silicon mud composite modified asphalt improves the viscosity, can be uniformly coated on the surface of aggregate, and improves the interlocking force between aggregates; meanwhile, the asphalt mixture has stronger deformation recovery capability, and the high-low temperature performance, the water damage resistance and the fatigue damage resistance of the asphalt mixture are obviously improved, so that the road performance of the asphalt mixture is improved.
Description
Technical Field
The invention relates to the technical field of road engineering materials, in particular to a composite modified asphalt mixture and a preparation method thereof.
Background
Along with the rapid development of highway construction in China, asphalt pavement has become the most widely used pavement structure form in China because of the advantages of sufficient mechanical strength, stable and comfortable driving, small vibration, no dust emission, low noise, convenience in maintenance and the like. However, due to the increase of high and low temperature extreme weather and the uncertainty of the use environment, many expressway asphalt pavements in China are easy to generate high and low temperature damage and water damage after being built and operated, the service life of the pavement is greatly shortened, and many expressways enter the overhaul or transformation period in advance, so that a great amount of economic losses are caused.
The existing technology of the asphalt pavement aiming at high and low temperatures mainly adopts means such as a road surface cooling coating at high temperature, but cannot simultaneously give consideration to damage to the pavement caused by high temperature and low temperature, and has no comprehensiveness. Therefore, the development of a novel modified asphalt mixture for solving the high and low temperature diseases of the pavement is particularly critical.
The information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is well known to a person skilled in the art.
Disclosure of Invention
In view of at least one of the above technical problems, the present disclosure provides a composite modified asphalt mixture and a preparation method thereof, which aim to solve both the technical problems of high and low temperature diseases and water damage of asphalt pavement.
According to one aspect of the present disclosure, there is provided a composite modified asphalt mixture, which is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 4-8 parts of asphalt, 0.02-0.08 part of nano silicon nitride, 0.20-0.60 part of silicon mud and 0.003-0.016 part of coupling agent.
In some embodiments of the present disclosure, the composite modified asphalt mixture is made from the following raw materials in parts by weight: 100 parts of mineral aggregate, 5-7 parts of asphalt, 0.03-0.06 part of nano silicon nitride, 0.30-0.50 part of silicon mud and 0.004-0.014 part of coupling agent.
In some embodiments of the present disclosure, the composite modified asphalt mixture is made from the following raw materials in parts by weight: 100 parts of mineral aggregate, 6.0 parts of asphalt, 0.036 parts of nano silicon nitride, 0.36 parts of silicon mud and 0.0072 parts of coupling agent.
In some embodiments of the present disclosure, the coupling agent is KH-550 epoxy functional silane, gamma-aminopropyl trimethoxysilane (WD-56) or gamma- (beta-aminoethyl) aminopropyl trimethoxysilane (WD-51), for example KH-550, which hydrolyzes upon dissolution in water to form unstable silanol groups, the-RO functional group of the silane coupling agent hydrolyzes in water (including free water adsorbed on the filler surface) to form silanol groups, which are compatible with Si 3 O 4 Chemical combination or combination with the original silyl ether alcohol group on the surface is carried out to form a homogeneous system.
In some embodiments of the present disclosure, the asphalt is road petroleum asphalt, coal asphalt, SBS modified asphalt, PE modified asphalt, or SBR modified asphalt.
According to another aspect of the present disclosure, there is provided a method for preparing a composite modified asphalt mixture, comprising the steps of:
(1) And (3) preparation of a modifier: preparing the raw materials according to the weight ratio;
nanometer silicon nitride, a coupling agent, water and ethanol are mixed according to the proportion of 1 to 4:0.15 to 0.8:0.4 to 0.6:1.1 to 1.4, and uniformly mixing and soaking for 80 to 100 minutes, filtering and drying at the temperature of between 40 and 70 ℃ to obtain the nano silicon nitride modifier;
(2) And (3) treating silicon mud: drying the silicon mud at 140 ℃ for 25-35 min for dehydration for standby;
(3) Preparing composite modified asphalt: heating and melting base asphalt at 180 ℃, adding modified nano silicon nitride, uniformly stirring by a high-speed shearing machine, adding silicon mud, stirring for 45-55 min, and placing the mixture in an environment at 160 ℃ for swelling and development for 25-350 min to obtain the modified nano silicon nitride;
(4) Preparing a composite modified asphalt mixture: heating mineral aggregate to 175-180 deg.c, and mixing with the modified asphalt.
In some embodiments of the present disclosure, in the step (1), the coupling agent is diluted with ethanol and water in a ratio of 3:7, the concentration of the diluent of the coupling agent is 1%, nano silicon nitride is added for soaking for 80-100 min after standing and hydrolyzing for 30min, then water and ethanol are removed by drying at 60-65 ℃, and the nano silicon nitride modifier is obtained after sieving by a square hole sieve with 0.075 mm.
In some embodiments of the present disclosure, in the step (3), the nano silicon nitride is added and then sheared for 8 to 12 minutes at a shear rate of 5000r/min, and then the silicon paste is added and sheared for 40 to 60 minutes at a shear rate of 5000 r/min.
One or more technical solutions provided in the embodiments of the present application at least have any one of the following technical effects or advantages:
1. the nano silicon nitride/silicon mud composite modified asphalt mixture is excellent in road performance, can enhance the high-temperature stability, low-temperature crack resistance and water stability of an asphalt pavement, and can prolong the service life of the asphalt pavement; the raw materials are nontoxic and harmless, the sources of the raw materials are wide, the production process is pollution-free and the price is low; the invention has simple preparation process, low cost and good economic benefit.
2. The surface of the nano silicon nitride is pretreated by a silane coupling agent (such as KH-550, etc.), so that the nano silicon nitride can be coupled with silicon mud in the asphalt mixture under the coupling action of the nano silicon nitride re-coupling agent to form a net-shaped coupling structure, thereby enhancing the mechanical strength, impact resistance and stability of the asphalt mixture.
3. The nano silicon nitride/silicon mud composite modified asphalt has higher viscosity, can be uniformly wrapped and attached on the surface of aggregate, and improves interlocking force between aggregates; meanwhile, the asphalt mixture has stronger deformation recovery capability, and the high-low temperature performance, the water damage resistance and the fatigue damage resistance of the asphalt mixture are obviously improved.
Detailed Description
The following examples relate to materials:
nano silicon nitride: the ceramic material has high hardness, stable structure, small thermal expansion coefficient, good oxidation resistance and corrosion resistance, and is a high-grade ceramic material integrating excellent thermodynamic performance and chemical performance.
Silicon mud: silicon powder generated when cutting a single crystal silicon or polycrystalline silicon rod by a diamond wire is deposited into cutting slurry together with other impurities to form a mud.
The instruments and devices referred to in the following examples are conventional instruments and devices unless otherwise specified; the related raw materials and reagents are all commercially available conventional raw materials unless otherwise specified; the detection, test, preparation methods and the like are conventional methods unless otherwise specified.
In order to better understand the technical solutions of the present application, the following describes the above technical solutions in detail with reference to specific embodiments.
Example 1: the embodiment discloses a nano silicon nitride/silicon mud composite modified asphalt mixture, which is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 5 parts of asphalt, 0.03 part of nano silicon nitride, 0.3 part of silicon mud and 0.006 part of silane coupling agent (KH-550); the mineral aggregate adopted in the embodiment is AC-13 mineral aggregate, and the asphalt adopted in the embodiment is road petroleum asphalt.
Example 2: the embodiment discloses a nano silicon nitride/silicon mud composite modified asphalt mixture, which is prepared from the following raw materials in parts by weight: 100 parts of AC-13 mineral aggregate, 5.5 parts of coal tar pitch, 0.033 part of nano silicon nitride, 0.33 part of silicon mud and 0.0066 part of silane coupling agent (KH-550).
Example 3: the embodiment discloses a nano silicon nitride/silicon mud composite modified asphalt mixture, which is prepared from the following raw materials in parts by weight: 100 parts of AC-13 mineral aggregate, 6 parts of SBS asphalt, 0.036 part of nano silicon nitride, 0.36 part of silicon mud and 0.0072 part of silane coupling agent (KH-550).
Example 4: the embodiment discloses a nano silicon nitride/silicon mud composite modified asphalt mixture, which is prepared from the following raw materials in parts by weight: 100 parts of AC-13 mineral aggregate, 6.5 parts of PE modified asphalt, 0.039 part of nano silicon nitride, 0.39 part of silicon mud and 0.0078 part of silane coupling agent (KH-550).
Example 5: the embodiment discloses a nano silicon nitride/silicon mud composite modified asphalt mixture, which is prepared from the following raw materials in parts by weight: 100 parts of AC-13 mineral aggregate, 7 parts of SBR modified asphalt, 0.042 part of nano silicon nitride, 0.42 part of silicon mud and 0.0084 part of silane coupling agent (KH-550).
The preparation method of the nanocomposite modified asphalt mixture in the above embodiment includes the following steps:
the raw materials were selected in parts by weight as described in examples 1-5, respectively.
(1) Preparing a modifier:
uniformly mixing nano silicon nitride, a coupling agent, water and ethanol according to corresponding proportion, soaking for 90min, filtering, and drying at 60 ℃ to obtain a nano silicon nitride modifier; the KH550 type coupling agent is used for modifying the silicon nitride, so that an organic functional group-R' carried by the other end of the silane coupling agent and having good affinity with a high polymer can be firmly covered on the surface of the silicon nitride particles to form a coating film with reactivity, and the coating film can be better uniformly dispersed in asphalt.
(2) And (3) drying the silicon mud in a 140 ℃ oven for 30min for dehydration for standby, and obtaining the prepared silicon mud modifier.
(3) Preparing nano silicon nitride/silicon mud composite modified asphalt: heating and melting base asphalt at 180 ℃, adding nano silicon nitride (improving the high-temperature stability of asphalt mixture and improving the problem of poor compatibility of silicon mud and matrix asphalt), uniformly stirring by a high-speed shearing machine, adding silicon mud (improving the low-temperature crack resistance and water stability of asphalt mixture), stirring for 50min, and placing the mixture in 160 ℃ environment for swelling and developing for 30min to obtain the nano silicon nitride/silicon mud composite modified asphalt.
(4) Preparing a nano silicon nitride/silicon mud composite modified asphalt mixture: heating mineral aggregate to 175-180 ℃, and then mixing and stirring uniformly with the nano silicon nitride/silicon mud composite modified asphalt obtained in the step (3) according to a conventional method to obtain the nano silicon nitride/silicon mud composite modified asphalt mixture.
The nano silicon nitride/silicon mud composite modified asphalt mixtures of examples 1 to 5 were subjected to road performance tests including a high temperature rutting test, a low Wen Xiaoliang bending test (-10 ℃), a freeze thawing cleavage test and a water-immersed marshall test, to test the road performance of the nano composite modified asphalt mixtures obtained in each example, and were subjected to comparative analysis with a normal asphalt mixture to which no nano material was added, and the test results are shown in table 1 below.
Table 1 pavement performance test data for the nano silicon nitride/silicon mud composite modified asphalt mixtures of examples 1-5
。
As can be seen from Table 1, the nano silicon nitride/silicon mud composite modified asphalt mixture meets the related requirements of the Ministry of transportation issued standard JTG F40-2004 technical Specification for construction of Highway asphalt pavement, and the indexes such as high temperature stability, low temperature crack resistance and water stability are obviously higher than those of the common asphalt mixture, thus indicating that the asphalt mixture has excellent road performance.
While certain preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, the present invention is intended to include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The composite modified asphalt mixture is characterized by being prepared from the following raw materials in parts by weight: 100 parts of AC-13 mineral aggregate, 4-8 parts of asphalt, 0.02-0.08 part of nano silicon nitride, 0.20-0.60 part of silicon mud and 0.003-0.016 part of silane coupling agent;
the preparation method of the composite modified asphalt mixture comprises the following steps:
(1) Nanometer silicon nitride, a silane coupling agent, water and ethanol are mixed according to the proportion of 1 to 4:0.15 to 0.8:0.4 to 0.6:1.1 to 1.4, and uniformly mixing and soaking for 80 to 100 minutes, filtering and drying at the temperature of between 40 and 70 ℃ to obtain modified nano silicon nitride;
(2) And (3) treating silicon mud: drying the silicon mud at 140 ℃ for 30min for dehydration for standby;
(3) Preparing composite modified asphalt: heating and melting asphalt at 180 ℃, adding modified nano silicon nitride, uniformly stirring by a high-speed shearing machine, adding silicon mud, stirring for 45-55 min, and placing the mixture in an environment at 160 ℃ for swelling and developing for 25-35 min to obtain the modified nano silicon nitride;
(4) Preparing a composite modified asphalt mixture: heating the AC-13 mineral aggregate to 175-180 ℃, and then uniformly mixing and stirring the mineral aggregate with the composite modified asphalt obtained in the previous step;
the silicon mud is mud formed by depositing silicon powder generated when cutting a single crystal silicon rod or a polycrystalline silicon rod by using a diamond wire and other impurities into cutting slurry.
2. The composite modified asphalt mixture according to claim 1, which is characterized by being prepared from the following raw materials in parts by weight: 100 parts of AC-13 mineral aggregate, 5-7 parts of asphalt, 0.03-0.06 part of nano silicon nitride, 0.30-0.50 part of silicon mud and 0.004-0.014 part of silane coupling agent.
3. The composite modified asphalt mixture according to claim 1, which is characterized by being prepared from the following raw materials in parts by weight: 100 parts of AC-13 mineral aggregate, 6.0 parts of asphalt, 0.036 parts of nano silicon nitride, 0.36 parts of silicon mud and 0.0072 parts of silane coupling agent.
4. The composite modified asphalt mixture according to claim 1, wherein the silane coupling agent is KH-550 epoxy functional group silane, γ -aminopropyl trimethoxysilane or γ - (β -aminoethyl) aminopropyl trimethoxysilane.
5. The composite modified asphalt mixture according to claim 1, wherein the asphalt is road petroleum asphalt, coal asphalt, SBS modified asphalt, PE modified asphalt or SBR modified asphalt.
6. The composite modified asphalt mixture according to claim 1, wherein in the step (1) of the preparation method, the silane coupling agent is diluted with ethanol and water, the ratio of water to ethanol is 3:7, the concentration of the diluted solution of the silane coupling agent is 1%, the silane coupling agent is subjected to standing hydrolysis for 25-35 min, then nano silicon nitride is added for soaking for 80-100 min, then water and ethanol are removed by drying under the condition of 60-65 ℃, and the modified nano silicon nitride is obtained after sieving through a 0.075mm square hole sieve.
7. The composite modified asphalt mixture according to claim 1, wherein in the step (3) of the preparation method, modified nano silicon nitride is added to shear for 8-12 min at a shear rate of 5000r/min, and then silicon mud is added to shear for 40-60 min at a shear rate of 5000 r/min.
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| US11370707B1 (en) * | 2021-03-23 | 2022-06-28 | Tongji University | Asphalt modified with red mud for porous pavement material and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034270B (en) * | 2017-12-28 | 2019-11-22 | 华南理工大学 | A kind of modified pitch and preparation method thereof |
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|---|---|---|---|---|
| WO2008049312A1 (en) * | 2006-10-20 | 2008-05-02 | Shenzhen Oceanpower Industrial Co., Ltd. | An asphalt modifier for improving rutting resistance of pavements |
| CN101838468A (en) * | 2010-05-19 | 2010-09-22 | 西安国琳再生技术研究有限公司 | Nanometer silicon powder compound modified bitumen composition and method for preparing same |
| CN102558888A (en) * | 2012-02-27 | 2012-07-11 | 周其强 | Application of polycrystalline silicon wastes to preparation of synthetic rubber asphalts |
| CN106746927A (en) * | 2016-12-27 | 2017-05-31 | 华北水利水电大学 | Nano-compound modified asphalt and preparation method thereof |
| CN112010588A (en) * | 2020-09-05 | 2020-12-01 | 华北水利水电大学 | Multi-scale nano material composite diatomite modified drainage asphalt mixture and preparation method thereof |
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| US11370707B1 (en) * | 2021-03-23 | 2022-06-28 | Tongji University | Asphalt modified with red mud for porous pavement material and application thereof |
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