CN117263567A - Asphalt mixture based on Buton rock asphalt-nano material composite modification and preparation method thereof - Google Patents
Asphalt mixture based on Buton rock asphalt-nano material composite modification and preparation method thereof Download PDFInfo
- Publication number
- CN117263567A CN117263567A CN202310951538.XA CN202310951538A CN117263567A CN 117263567 A CN117263567 A CN 117263567A CN 202310951538 A CN202310951538 A CN 202310951538A CN 117263567 A CN117263567 A CN 117263567A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- parts
- asphalt mixture
- nano
- buton rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 170
- 239000000203 mixture Substances 0.000 title claims abstract description 74
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 239000011435 rock Substances 0.000 title claims abstract description 41
- 239000002086 nanomaterial Substances 0.000 title claims abstract description 7
- 230000004048 modification Effects 0.000 title claims abstract description 6
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000002715 modification method Methods 0.000 title description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 30
- 239000004917 carbon fiber Substances 0.000 claims abstract description 30
- 229910021392 nanocarbon Inorganic materials 0.000 claims abstract description 30
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 25
- 239000011707 mineral Substances 0.000 claims abstract description 25
- 239000007822 coupling agent Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000012986 modification Methods 0.000 claims abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical group CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 9
- 239000002134 carbon nanofiber Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 239000003607 modifier Substances 0.000 claims description 8
- 238000010008 shearing Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000003245 coal Substances 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
- 238000007873 sieving Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 2
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 231100000252 nontoxic Toxicity 0.000 abstract description 3
- 230000003000 nontoxic effect Effects 0.000 abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 239000004408 titanium dioxide Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/305—Titanium oxide, e.g. titanates
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/386—Carbon
-
- 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
- C04B20/10—Coating or impregnating
- C04B20/1051—Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/36—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00008—Obtaining or using nanotechnology related materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2038—Resistance against physical degradation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Nanotechnology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The application provides a asphalt mixture based on Buton rock asphalt-nano material composite modification and a preparation method thereof, and aims to solve the technical problems that the road performance of the existing asphalt mixture is poor, and the formed asphalt pavement is serious in high and low temperature diseases and water damage. The composite modified asphalt mixture is prepared from the following raw materials in parts by weight: 80-120 parts of mineral aggregate, 4-6 parts of asphalt, 1-1.5 parts of Buton rock asphalt, 0.02-0.03 part of nano carbon fiber, 0.2-0.3 part of nano titanium dioxide and 0.01-0.015 part of coupling agent. The composite modified asphalt mixture provided by the application belongs to an environment-friendly nontoxic corrosion-free composite asphalt mixture, has excellent road performance, can enhance the high-temperature stability, low-temperature crack resistance and water stability of an asphalt pavement, and simultaneously enhances the mechanical strength, impact resistance and stability of the asphalt mixture, and has great significance for prolonging the service life of the asphalt pavement.
Description
Technical Field
The application relates to the technical field of road engineering materials, in particular to a Buton rock asphalt-nano material composite modified asphalt mixture and a preparation method thereof.
Background
Along with the rapid development of highway construction in China, the demand of the highway construction is growing. As one of the pavement materials commonly used in road construction, 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, convenient maintenance and the like. However, due to the increase of extreme weather at high and low temperatures and the uncertainty of the use environment, many expressway asphalt pavements in China are exposed to ultraviolet irradiation, high temperature, low temperature and heavy load environments for a long time after being built and operated, various diseases can occur after long-time use, and the phenomena of high and low temperature damage and water damage are easy to occur, so that the service life of the pavement is greatly shortened, and a great number of expressways enter a overhaul or reconstruction period in advance, so that a great amount of economic losses are caused.
The prior technical measures of the asphalt pavement aiming at high and low temperatures mainly adopt means such as a road surface cooling coating at high temperature, but the damage to the pavement caused by high temperature and low temperature cannot be simultaneously considered. Therefore, the development of a novel 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
The application provides a asphalt mixture based on Buton rock asphalt-nano material composite modification and a preparation method thereof, and aims to solve the technical problems of poor road performance of the existing asphalt mixture, high and low temperature diseases and serious water damage of an asphalt pavement constructed by the existing asphalt mixture.
The technical scheme of the application is realized in the following way:
the composite modified asphalt mixture is prepared from the following raw materials in parts by weight: the material is prepared from the following raw materials in parts by weight: 80-120 parts of mineral aggregate, 4-6 parts of asphalt, 1-1.5 parts of Buton rock asphalt, 0.02-0.03 part of nano carbon fiber, 0.2-0.3 part of nano titanium dioxide and 0.01-0.015 part of coupling agent.
The further composite modified asphalt mixture is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 5.0 parts of asphalt, 1.25 parts of Buton rock asphalt, 0.025 part of nano carbon fiber, 0.25 part of nano titanium dioxide and 0.0125 part of coupling agent.
Further, the asphalt is at least one of road petroleum asphalt, coal asphalt, SBS modified asphalt, PE modified asphalt or SBR modified asphalt.
The preparation method of the composite modified asphalt mixture comprises the following steps:
(1) Preparing a nano carbon fiber modifier: preparing the raw materials according to the weight ratio; diluting the coupling agent with ethanol and water, keeping the concentration of the diluted solution to be 2%, standing for 15-25 min, adding the carbon nanofiber, soaking for 90-110 min, drying at 50-70 ℃ to remove water and ethanol, and sieving to obtain the nano carbon fiber;
(2) Buton rock asphalt treatment: the Buton rock asphalt is dried for 35 to 45 minutes at the temperature of 140 to 160 ℃ for standby;
(3) Nano titanium dioxide treatment: drying the nano titanium dioxide at 140-160 ℃ for 35-45 min for standby;
(4) Preparing composite modified asphalt: heating and melting asphalt at 160-180 ℃, adding nano carbon fiber, uniformly stirring, adding Buton rock asphalt and nano titanium dioxide, stirring for 50-70 min, and swelling and developing for 20-40 min at 145-165 ℃ to obtain the asphalt;
(5) Preparing a composite modified asphalt mixture: heating mineral aggregate to 170-175 ℃, and uniformly stirring with the composite modified asphalt.
Further, the coupling agent is gamma-aminopropyl trimethoxy silane coupling agent. The gamma-aminopropyl trimethoxy silane (WD-56) coupling agent covers the carbon nanofiber, so that the surface of the carbon nanofiber is oleophylic and hydrophobic, and the carbon nanofiber and the titanium dioxide are well mixed into asphalt and uniformly dispersed in the asphalt.
Further, in the step (4), after adding the nano carbon fiber, shearing for 15-25 min at a shearing rate of 4500r/min, and then sequentially adding Buton rock asphalt and nano titanium dioxide, shearing for 30-50 min at a shearing rate of 5500 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:
1. the composite modified asphalt mixture is environment-friendly, nontoxic and corrosion-free, has excellent road performance, and can enhance the high-temperature stability, the low-temperature crack resistance and the water stability of the asphalt pavement, thereby prolonging the service life of the asphalt pavement.
2. The composite modified asphalt mixture is prepared from mineral aggregate, asphalt, buton rock asphalt, carbon nanofiber, nano titanium dioxide, gamma-aminopropyl trimethoxy silane (WD-56) coupling agent and other raw materials, is nontoxic and harmless, has wide raw material sources, pollution-free production process, low price, simple preparation process, low cost and good economic benefit.
3. The surface of the nano carbon fiber is pretreated by the coupling agent solution, so that the nano carbon fiber can be connected with titanium dioxide in the asphalt mixture to form a net-shaped connection structure under the coupling action of the coupling agent, and the mechanical strength, impact resistance and stability of the asphalt mixture are enhanced; fully blending Buton rock asphalt with higher softening point and smaller penetration into asphalt, so as to improve rutting resistance, fatigue resistance and water damage resistance of the asphalt mixture; the nano titanium dioxide can improve the rutting resistance, ageing resistance, fatigue resistance and water damage resistance of the asphalt mixture; the nano carbon fiber can improve the heat-conducting property, compressive strength and shear strength of the asphalt mixture; the Buton rock asphalt, the nano carbon fiber and the nano titanium dioxide in the composite modifier form a three-dimensional framework structure together, so that the comprehensive road performance of the asphalt mixture is improved.
4. The carbon nanofiber, the nano titanium dioxide and the Buton rock asphalt can play a synergistic effect in the asphalt mixture, so that the performance of the asphalt mixture is comprehensively improved; can improve the heat conduction performance of the asphalt mixture: the nano carbon fiber can form a heat conduction network, so that the heat conduction performance of the pavement is improved; the Buton rock asphalt has higher softening point and smaller penetration, and can keep better stability at high temperature, so that the heat conduction performance of the pavement can be further improved by the matched use of the nano carbon fiber and the Buton rock asphalt; the mechanical properties of the asphalt mixture can be improved: the nano titanium dioxide can improve rutting resistance, fatigue resistance and water damage resistance of the asphalt mixture, and the Buton rock asphalt has higher softening point and smaller penetration, and can keep better stability at high temperature, so that the mechanical property of the asphalt mixture can be further improved by the cooperation of the nano titanium dioxide and the Buton rock asphalt; the air quality of the asphalt mixture can be improved: the nanometer titanium dioxide has photocatalysis characteristic, and generates free radical under illumination, thereby degrading harmful substances in automobile exhaust, adding the nanometer titanium dioxide can improve air quality and reduce exhaust pollution, and the Buton rock asphalt has better ageing resistance and can prolong the service life of the pavement, so the cooperation of the nanometer titanium dioxide and the Buton rock asphalt can improve air quality and prolong the service life of the pavement.
5. The application can reduce cost: the nano carbon fiber and the nano titanium dioxide have smaller addition amount, so that the performance of the asphalt mixture can be improved under the condition of not increasing too much cost, and the Buton rock asphalt is also natural asphalt, and has lower cost compared with other modifiers, so that the performance of the asphalt mixture can be improved under the condition of not increasing too much cost by the matched use of the nano carbon fiber, the nano titanium dioxide and the Buton rock asphalt.
6. The viscosity of the composite modified asphalt is higher, the composite modified asphalt can be uniformly wrapped on the surface of aggregate, and the interlocking force between aggregates is improved; 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
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.
The raw materials of the pesticides and the auxiliary agents in the following examples are all conventional raw materials on the market unless otherwise specified; the preparation method, the application method and the test method are all conventional methods unless otherwise specified.
The following examples of the composite modified asphalt mixture include the following preparation steps:
according to 100 parts of mineral aggregate, 4-6 parts of asphalt, 1-1.5 parts of Buton rock asphalt, 0.02-0.03 part of nano carbon fiber, 0.2-0.3 part of nano titanium dioxide and 0.01-0.015 part of coupling agent by weight proportion;
(1) And (3) preparation of a modifier: carbon nanofibers, a coupling agent (gamma-aminopropyl trimethoxysilane), water and ethanol were mixed in a ratio of 1:0.05:0.3:1.2, uniformly mixing the materials according to the mass ratio, soaking for 60 minutes, filtering, and drying at 60 ℃ to obtain the carbon nanofiber modifier;
the coupling agent (gamma-aminopropyl trimethoxy silane) is diluted by ethanol and water, the ratio of water to ethanol is 2:8, the concentration of the diluent of the coupling agent (gamma-aminopropyl trimethoxy silane) is 2%, the coupling agent is left to stand and hydrolyze for 20min, then nano carbon fibers are added to soak for 90-110 min, the water and the ethanol are removed by drying at 50-70 ℃, and the nano carbon fiber modifier is obtained after sieving by a square hole sieve with 0.075 mm.
(2) Buton rock asphalt treatment: drying Buton rock asphalt in a baking oven at 150 ℃ for 40min for dehydration for standby;
(3) Nano titanium dioxide treatment: drying nanometer titanium dioxide in a baking oven at 150 ℃ for 40min for dehydration for standby;
(4) Preparing composite modified asphalt: heating and melting base asphalt at 170 ℃, adding nano carbon fibers, uniformly stirring by a high-speed shearing machine, gradually adding Buton rock asphalt and nano titanium dioxide, stirring for 60min, and placing the mixture in an environment at 155 ℃ for swelling and developing for 30min to obtain the modified asphalt;
(5) Preparing a composite modified asphalt mixture: and (3) mixing and stirring the mineral aggregate heated to 170-175 ℃ and the composite modified asphalt obtained in the step (4) uniformly according to a conventional method to obtain the composite modified asphalt mixture.
Example 1: a composite modified asphalt mixture is prepared from the following raw materials in parts by weight:
is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 4 parts of asphalt, 1 part of Buton rock asphalt, 0.02 part of nano carbon fiber, 0.2 part of nano titanium dioxide and 0.001 part of coupling agent.
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: a composite modified asphalt mixture is prepared from the following raw materials in parts by weight:
is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 4.5 parts of asphalt, 1.125 parts of Buton rock asphalt, 0.0225 part of nano carbon fiber, 0.225 part of nano titanium dioxide and 0.001125 parts of coupling agent.
The mineral aggregate used in this example was AC-13 mineral aggregate, and the asphalt used was coal asphalt.
Example 3: a composite modified asphalt mixture is prepared from the following raw materials in parts by weight:
is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 5 parts of asphalt, 1.25 parts of Buton rock asphalt, 0.025 part of nano carbon fiber, 0.25 part of nano titanium dioxide and 0.00125 part of coupling agent.
The mineral aggregate used in this example was AC-13 mineral aggregate, and the asphalt used was SBS asphalt.
Example 4: a composite modified asphalt mixture is prepared from the following raw materials in parts by weight:
is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 5.5 parts of asphalt, 1.375 parts of Buton rock asphalt, 0.0275 part of nano carbon fiber, 0.275 part of nano titanium dioxide and 0.001375 parts of coupling agent.
The mineral aggregate adopted in the embodiment is AC-13 mineral aggregate, and the asphalt adopted in the embodiment is PE modified asphalt.
Example 5: a composite modified asphalt mixture is prepared from the following raw materials in parts by weight:
is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 6 parts of asphalt, 1.5 parts of Buton rock asphalt, 0.03 part of nano carbon fiber, 0.3 part of nano titanium dioxide and 0.0015 part of coupling agent.
The mineral aggregate used in this example was AC-13 mineral aggregate, and the asphalt used was SBR modified asphalt.
The composite modified asphalt mixtures of examples 1-5 were subjected to road performance tests, including high temperature rutting test, low Wen Xiaoliang bending test (-10 ℃), freeze-thaw cleavage test and water-immersion Marshall test; the road performance of the composite modified asphalt mixture of the invention is tested, and the road performance is compared and analyzed with the common asphalt mixture without the modifier, and the test results are shown in the following table 1.
Table 1 road performance test data for the composite modified asphalt mixtures of examples 1-5
。
As can be seen from table 1, the dynamic stability of the composite modified asphalt mixture is far higher than that of the normal asphalt mixture, and therefore, the high-temperature rutting resistance of the composite modified asphalt mixture is stronger than that of the normal asphalt mixture; the maximum flexural tensile strain of the composite modified asphalt mixture is far greater than that of the common asphalt mixture, so that the low-temperature crack resistance of the composite modified asphalt mixture is stronger than that of the common asphalt mixture; the residual stability of the composite modified asphalt mixture is far higher than that of the common asphalt mixture, so that the high-temperature stability of the composite modified asphalt mixture is higher than that of the common asphalt mixture; the splitting strength ratio of the composite modified asphalt mixture is far greater than that of the common asphalt mixture, so that the water stability of the composite modified asphalt mixture is stronger than that of the common asphalt mixture.
The composite modified asphalt mixture meets the related requirements of the traffic department issued standard JTG F40-2004 technical Specification for highway asphalt pavement construction, and the indexes of high temperature stability, low temperature crack resistance, water stability and the like are obviously higher than those of the common asphalt mixture, so that the asphalt mixture has excellent road performance.
The present application is described in detail above with reference to examples; however, it will be understood by those skilled in the art that various specific parameters of the above embodiments may be changed or equivalents may be substituted for related materials and method steps without departing from the inventive concept thereof, so as to form a plurality of specific embodiments, which are common variations of the present application and will not be described in detail herein.
Claims (6)
1. The asphalt mixture based on the Buton rock asphalt-nano material composite modification is characterized by being prepared from the following raw materials in parts by weight: 80-120 parts of mineral aggregate, 4-6 parts of asphalt, 1-1.5 parts of Buton rock asphalt, 0.02-0.03 part of nano carbon fiber, 0.2-0.3 part of nano titanium dioxide and 0.01-0.015 part of coupling agent.
2. The asphalt mixture according to claim 1, which is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 5.0 parts of asphalt, 1.25 parts of Buton rock asphalt, 0.025 part of nano carbon fiber, 0.25 part of nano titanium dioxide and 0.0125 part of coupling agent.
3. The asphalt mixture according to claim 1, wherein the coupling agent is a gamma-aminopropyl trimethoxysilane coupling agent.
4. The asphalt mixture according to claim 1, wherein the asphalt is at least one of road petroleum asphalt, coal asphalt, SBS modified asphalt, PE modified asphalt, or SBR modified asphalt.
5. The method for preparing the asphalt mixture based on the composite modification of the Buton rock asphalt and the nano material as set forth in claim 1, which is characterized by comprising the following steps:
(1) Preparing a nano carbon fiber modifier: preparing the raw materials according to the weight ratio of claim 1; diluting the coupling agent with ethanol and water, keeping the concentration of the diluted solution to be 2%, standing for 15-25 min, adding the carbon nanofiber, soaking for 90-110 min, drying at 50-70 ℃ to remove water and ethanol, and sieving to obtain the nano carbon fiber;
(2) Buton rock asphalt treatment: the Buton rock asphalt is dried for 35 to 45 minutes at the temperature of 140 to 160 ℃ for standby;
(3) Nano titanium dioxide treatment: drying the nano titanium dioxide at 140-160 ℃ for 35-45 min for standby;
(4) Preparing composite modified asphalt: heating and melting asphalt at 160-180 ℃, adding nano carbon fiber, uniformly stirring, adding Buton rock asphalt and nano titanium dioxide, stirring for 50-70 min, and swelling and developing for 20-40 min at 145-165 ℃ to obtain the asphalt;
(5) Preparing a composite modified asphalt mixture: heating mineral aggregate to 170-175 ℃, and uniformly stirring with the composite modified asphalt.
6. The method according to claim 6, wherein in the step (4), the nano carbon fiber is added and then sheared for 15 to 25 minutes at a shearing rate of 4500r/min, and the Buton rock asphalt and the nano titanium dioxide are sequentially added and sheared for 30 to 50 minutes at a shearing rate of 5500 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310951538.XA CN117263567A (en) | 2023-07-31 | 2023-07-31 | Asphalt mixture based on Buton rock asphalt-nano material composite modification and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310951538.XA CN117263567A (en) | 2023-07-31 | 2023-07-31 | Asphalt mixture based on Buton rock asphalt-nano material composite modification and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117263567A true CN117263567A (en) | 2023-12-22 |
Family
ID=89218519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310951538.XA Pending CN117263567A (en) | 2023-07-31 | 2023-07-31 | Asphalt mixture based on Buton rock asphalt-nano material composite modification and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117263567A (en) |
-
2023
- 2023-07-31 CN CN202310951538.XA patent/CN117263567A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103288392B (en) | Fiber-toughened cement-emulsified asphalt-based mixture and preparation method thereof | |
| CN109265054A (en) | Ultra-thin wearing layer bituminous mixture and preparation method thereof | |
| CN109650781B (en) | Medium-low temperature warm-mixed high-friction thin-layer overlay asphalt mixture and preparation method thereof | |
| CN101649122B (en) | SBS modified asphalt and preparation method thereof | |
| CN109231890A (en) | A kind of stone mastic asphalt and preparation method thereof | |
| CN111747683A (en) | Hot-mix-in-plant asphalt mixture and preparation method thereof | |
| CN111377661A (en) | Ultrathin asphalt mixture based on environment-friendly rubber powder and preparation method thereof | |
| CN105541182A (en) | Ultra-viscous fiber resin asphalt wearing layer mixture and preparation method thereof | |
| CN112125577A (en) | Multi-scale nano material composite modified asphalt mixture and preparation method thereof | |
| CN112430012A (en) | Basalt composite fiber and asphalt mixture containing basalt composite fiber | |
| CN112430010A (en) | Desulfurized reclaimed rubber reclaimed asphalt mixture and preparation method thereof | |
| CN112010588A (en) | Multi-scale nano material composite diatomite modified drainage asphalt mixture and preparation method thereof | |
| CN108314357A (en) | A kind of cocoanut fiber asphalt and preparation method thereof | |
| CN106630770A (en) | Double-fiber fine-grain type asphalt mixture and preparation method thereof | |
| CN114804722A (en) | High-performance rubber asphalt mixture based on soft and hard asphalt compounding, and preparation method and application thereof | |
| CN107265926A (en) | Inspire confidence in basalt fibre water-permeating pitch mixed material in one kind incorporation North America | |
| CN112939513B (en) | Self-healing asphalt concrete based on fiber type self-repairing agent | |
| CN114213060A (en) | Low-activity steel slag asphalt mixture and preparation method thereof | |
| CN102757198A (en) | Environment-friendly flaming retarding bituminous mixture and preparation method thereof | |
| CN117263567A (en) | Asphalt mixture based on Buton rock asphalt-nano material composite modification and preparation method thereof | |
| CN115650636B (en) | Composite modified asphalt mixture and preparation method thereof | |
| CN112280323A (en) | Preparation method of asphalt regenerant with large-proportion RAP mixing amount | |
| CN115710099A (en) | Asphalt mixture for ultrathin overlay pavement and preparation method thereof | |
| CN111072311A (en) | Modifier for improving anti-rutting performance of asphalt concrete and preparation method thereof | |
| CN116477877A (en) | Fiber-reinforced high-toughness asphalt mixture and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |