CN109233313A - A kind of high-modulus asphalt modifying agent, high-modulus composite modified asphalt, asphalt and preparation method thereof - Google Patents
A kind of high-modulus asphalt modifying agent, high-modulus composite modified asphalt, asphalt and preparation method thereof Download PDFInfo
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- CN109233313A CN109233313A CN201811121945.3A CN201811121945A CN109233313A CN 109233313 A CN109233313 A CN 109233313A CN 201811121945 A CN201811121945 A CN 201811121945A CN 109233313 A CN109233313 A CN 109233313A
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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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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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- C—CHEMISTRY; METALLURGY
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Abstract
The present invention provides a kind of high-modulus asphalt modifying agent, high-modulus composite modified asphalt, asphalt and preparation method thereof, high-modulus asphalt modifying agent includes 40-60 parts of devulcanized rubber tyre talcs, 30-60 parts of polyolefin plastics particles, 0-20 parts of Petropols or solid asphalt and 0-6 parts of stabilizers.High-modulus composite modified asphalt includes 80-85 parts of matrix pitches, 10-15 parts of high-modulus asphalt modifying agent, 0-0.4 parts of sulphur and 0-7 parts of lightweight oils.Asphalt includes 100 parts of mineral aggregates and 4.0-5.5 parts of high-modulus composite modified asphalts.The problem of high-modulus composite asphalt modifier of the invention solves plastics and pitch compatibility is poor, easily separates and floats from pitch asphalt of the invention can be obviously improved the modulus and rutting resistance of bituminous texture layer when forming bituminous pavement.
Description
Technical field
The invention belongs to bituminous composite modified field, it is related to a kind of high-modulus asphalt modifying agent, the composite modified drip of high-modulus
Green, asphalt and preparation method thereof.
Background technique
China's scale starts from the road network first stage of construction nineties in last century using modified pitch, and communications and transportation at that time is passing through
Ji, which increases, drives lower total amount rapid growth, and shipping overload heavy loading grows in intensity, so that newly-built expressway surface soon occurs
The serious road-surface problem of a large amount of high temperature unstability and rainy season water damage.The last century 90's, Capital Airport high speed is using from difficult to understandly
Plastics (PE) situ modified pitch that benefit is introduced has opened the prelude that scale uses modified pitch.In subsequent application, PE
Modified pitch is known as deforming that small, rutting resistance is strong by industry, has become using high-modulus and Rut resistance as target road surface
The preferred modifying agent of engineering.But PE modified pitch has two big short slabs never effectively to solve, first is that plastics and pitch are close
It spends that difference is big, poor compatibility, leads to modified pitch isolation quickly, it is necessary to scene supply, and during live supplying mode do not adapt to
The needs of state's expressway construction fast development；Second is, the low temperature and cracking resistance of modifying plastics are declined, and road surface
Cracking is one of the Major Diseases for influencing pavement life.So, modifying plastics pitch loses rapidly starting advantage,
The small kind of modified pitch is eventually become, SBS modified pitch becomes main because of good combination property, suitable centralized large-scale production
Flow modified pitch kind, nearly 4,000,000 tons of usage amount of China year.
Meanwhile because the problem of China's road traffic heavy duty is very serious, to the research of high-modulus (Rut resistance) pitch and
Using all maintaining higher industry attention rate and commercial scale always.Although PE situ modified application mode is substantially abandoned
With still, using plastics as dry method high-modulus (Rut resistance) Development of Additives visitor of main material directly launched to asphalt mixing plant
It sees, there is the application of certain scale in each province and city.But as situ modified, the mode process quality control for mixing throwing of standing erectly is difficult
Degree is big, generally plays the advantage of its using flexible and is mainly used in middle and small scale project.On the other hand, with the height of France
Modulus pavement technique system starts whole organizational system and introduces China, and low grade pitch have developed rapidly, and leads on high-modulus (Rut resistance) road surface
The application in domain has the tendency that catching up from behind.But low grade pitch is partially hard, cracking resistance and in terms of oil mass (cost) still
It is difficult to reach good balance.
After 2010, China's highway network networking, highway construction integrally turns to maintenance, and the demand to functional road surface continues
Increase, the application scale continuous enlargement on high-modulus (Rut resistance) road surface, to the functional material in high-modulus (Rut resistance) road surface field
The exploitation of material proposes huge challenge.Call the suitable centralized production with high-modulus (Rut resistance) for general function target in market
With the stability modified pitch kind of supply, the kind is other than high-modulus (Rut resistance) function of tonic chord, it is necessary to take into account well
Cracking resistance and cost.
Summary of the invention
The first purpose of this invention is to provide a kind of high-modulus asphalt modifying agent and preparation method thereof, high-modulus drip
Green modifying agent is easy to process, and can be stably dispersed in pitch.
Second object of the present invention is to provide a kind of high-modulus composite modified asphalt and preparation method thereof, the high-modulus
Composite modified asphalt toughness for matrix pitch is greatly improved.
Third object of the present invention is to provide a kind of asphalt and preparation method thereof, which can
For anti-cracking function structure sheaf, enables to the anti-crack ability of bituminous pavement that the order of magnitude is presented and increase.
To achieve the above object, the invention adopts the following technical scheme:
[high-modulus asphalt modifying agent]
A kind of high-modulus asphalt modifying agent comprising following components and its parts by weight:
40-60 parts of devulcanized rubber tyre talc；
30-60 parts of polyolefin plastics particle；
Petropols and/or 0-20 parts of solid asphalt；
0-6 parts of stabilizer.
Wherein, devulcanized rubber tyre talc be by crumb rubber it is broken after, 160-260 DEG C of progress desulfurization be made.It is de-
The Mooney index of sulphur rubber tyre talc is between 50-190.Sweetening process actively forces to exclude flue gas.
Any one or two kind of the polyolefin plastics particle in polyethylene particles and polypropylene particles.Polyolefin plastics
The melt index of particle is 1-15g/10min, and 6% adulteration modified asphalt softening point is at 80 DEG C or more.
Stabilizer is selected from castor oil, petroleum sodium sulfonate, styrene, nylon toughener, modified polyacrylate, cyclic annular acid
Any one or a few in acid anhydride, epoxy resin or compound with epoxy group.
Stabilizer can contain 0-10 parts of castor oil, can also contain 0.1-9.9 parts of castor oil.Stabilizer can contain 0-15 parts
Petroleum sodium sulfonate, 0.1-14.9 parts of petroleum sodium sulfonates can also be contained.Stabilizer can contain 5-35 parts of styrene, can also be with
Containing 5.1-34.9 parts of styrene.Stabilizer can contain 0-15 parts of nylon tougheners, can also contain 0.1-14.9 parts of toughening nylons
Agent.Stabilizer can contain 0-35 parts of modified polyacrylates, can also contain 0.1-34.9 parts of modified polyacrylates.Stablize
Agent can contain 0-35 parts of cyclic acid anhydrides, can also contain 0.1-34.9 parts of cyclic acid anhydrides.Stabilizer can contain 0-35 parts of epoxy resin
Or the compound with epoxy group, 0.1-34.9 parts of epoxy resin or the compound with epoxy group can also be contained.
The softening point of Petropols is 60-120 DEG C.
Solid asphalt is that normal-temperature is solid or particle shape, and pitch of the softening point at 100 DEG C or more can be refined by petroleum
System forms or naturally occurs (lake asphalt or rock asphalt).
[preparation method of high-modulus asphalt modifying agent]
A kind of preparation method of high-modulus composite asphalt modifier comprising following steps:
(1), rubber wheel tire powder desulfurization is plasticized, obtains devulcanized rubber tyre talc；
(2), by 40-60 parts of devulcanized rubber tyre talcs, 30-60 parts of polyolefin plastics particles, 0-20 parts of Petropols or solid
Recombination reaction is carried out by double screw extruder after body pitch and 0-6 parts of stabilizer mixing, is then made by single screw extrusion machine
Grain.
Wherein, in step (1), normal pressure spiral Plasticator, spiro rod plasticizing machine, dynamic devulcanizer etc. is can be used in desulfurization plasticizing
Rubber powder desulfurization is plasticized equipment, and the temperature of desulfurization plasticizing is 160-260 DEG C.
In step (2), the temperature that double screw extruder carries out compound reaction time is 140-240 DEG C.
In step (2), the temperature that single screw extrusion machine is granulated is 100-160 DEG C.
[high-modulus composite modified asphalt]
A kind of high-modulus composite modified asphalt comprising following components and its parts by weight:
80-85 parts of matrix pitch；
10-15 parts of high-modulus asphalt modifying agent；
0-0.4 parts of sulphur；
0-7 parts of lightweight oil.
Wherein, matrix pitch is the A grade pitch for meeting JTG-F40 requirement.
Light oil is selected from any one in tall oil, rubber processing oil, furfural oil or decompression residuum.Light oil sorting
From tall oil, rubber processing oil, furfural oil, decompression residuum etc..When tall oil is from alkaline process (predominantly sulfate process) wood pulp processed
Remaining dark solution refining fatty acid and rosin acid blend.Rubber processing oil includes paraffine base crude oil, naphthene base crude oil
(naphthenic oil) and fragrant base oil (aromatic naphtha) etc..Furfural oil, i.e. furtural.Decompression residuum is also referred to as evaporated under reduced pressure residual oil, from refining
The residue oil of oily factory's VACUUM TOWER BOTTOM extraction.
The parts by weight of sulphur can also be 0.1-0.2 parts.
The parts by weight of lightweight oil can also be 0.1-6.9 parts.
High-modulus composite modified asphalt of the invention can be used in most common continuous grading bituminous pavement upper layer AC-
10, AC-13 or middle surface layer AC-16 and AC-20 or other high-modulus mix types.
[preparation method of high-modulus composite modified asphalt]
A kind of preparation method of high-modulus composite modified asphalt comprising following steps:
(1), by 80-85 parts of matrix pitches, 10-15 parts of high-modulus asphalt modifying agent and 0-7 parts of lightweight oils (when necessary)
It injects in swelling can, be warming up to 170-180 DEG C and be swollen a period of time, obtain swollen mixt；
(2), it is added in high speed disperser and disperses after mixing swollen mixt with 0-0.4 parts of sulphur, it is multiple to obtain high-modulus
Close modified pitch.
Wherein, in step (2), high speed disperser is cutter or colloid mill.The shear temperature of cutter is 160-190
DEG C, shear time is 20-40 minutes, and shearing revolution is 3000-6000r/min.
In step (2), when swollen mixt is mixed with sulphur, high speed disperser select colloid mill, after distribution into
Row stirring development.The time of stirring development is 60-120min, agitation revolution 400-1000r/min.Sulphur needs are passing through
It adds within 10 minutes before colloid mill.When swollen mixt is not mixed with sulphur, without the process of stirring development, finished product is directly arrived,
And it directly delivers.
[asphalt]
A kind of asphalt comprising following components and its parts by weight:
100 parts of mineral aggregate (building stones)；
4.0-5.5 parts of high-modulus composite modified asphalt.
Wherein, mineral aggregate is the mixtures at different levels to gather materials with miberal powder.The sources at different levels to gather materials be limestone, granite or
Any one or a few in tufa stone.JTG-F40 is shown in the specific requirement of coarse aggregate, and source is local common cutting optimal
Building stones, comprising: limestone, granite, tufa stone etc..The source of fine aggregate is limestone or other alkali aggregates, specific requirement
See JTG-F40.Miberal powder is the levigate powder of limestone, specific requirement JTG-F40.
[preparation method of asphalt]
A kind of preparation method of asphalt comprising following steps:
Mineral aggregate is preheated to 175-190 DEG C, then the high-modulus that temperature is 170-180 DEG C is added in dry mixing and 5-20s
Composite modified asphalt, wet-mixing and 35s-4min, discharging, obtain asphalt.
By adopting the above scheme, the beneficial effects of the present invention are:
The first, the problem of present invention solves plastics and pitch compatibility is poor, easily separates and floats from pitch, because existing
There is technology that can only use immediately using produced on-site, or the side that additive is directly launched to asphalt mixture mixing station is made
Even so formula is still difficult to ensure modifying agent being uniformly distributed in mixture.
The second, the present invention carries out desulfurization to tire glue powder, composite modified, strand squeezes the pretreatment such as arrangement, further
It is sufficiently mixed the high-modulus asphalt modifying agent obtained with recombination reaction with plastics, which is easy to refine in pitch
With homogenize and keep physical and chemical stability, the high-modulus modified pitch of plastics base has been achieved centralized production and extensive
Supply.The high-modulus asphalt is obviously improved in the cost frame of conventional modified asphalt mixture for bitumen pavement construction
The modulus of bituminous texture layer and rutting resistance.What is particularly worth mentioning is that the high-modulus asphalt mixing that the present invention obtains
Material, realizes take into account to non-deformability and good cryogenic property for the first time, is greatly enlarged recycling rubber and plastics are used for
The market space of modifying road asphalt has filled up the supply side blank of a crucial functional modification pitch.The present invention complies with
Road maintenance market can be realized the extensive digestibility and utilization waste tire of cleaning mode to the customization demand of asphalt modification
And recycled plastic, Technological Economy and social effect are significant.
Specific embodiment
The present invention provides a kind of high-modulus asphalt modifying agent, high-modulus composite modified asphalt, asphalt and its systems
Preparation Method.It is illustrated individually below.
[high-modulus asphalt modifying agent]
A kind of high-modulus asphalt modifying agent, it is easy to process, and can be stably dispersed in pitch.The high-modulus asphalt changes
Property agent includes following components and its parts by weight:
40-60 parts of devulcanized rubber tyre talc；
30-60 parts of polyolefin plastics particle；
Petropols and/or 0-20 parts of solid asphalt；
0-6 parts of stabilizer.
Wherein, devulcanized rubber tyre talc be by crumb rubber it is broken after, 160-260 DEG C of progress desulfurization be made, take off
Sulphur process actively forces to exclude flue gas.Rubber powder mesh number is 15-80 mesh.The Mooney index of the devulcanized rubber tyre talc can be with
It, can also be between 50-190 for 40-200.The test method of Mooney index is GB/T 1232.1, test condition are as follows: test
100 DEG C of temperature, greater trochanter heats 1min, rotates 4min.
Any one or two kind of the polyolefin plastics particle in polyethylene particles and polypropylene particles.Polyolefin plastics
The melt index (or the molten value of flowing) of particle can be 1-15g/10min, or 2-10g/10min.The survey of melt index
Fixed condition are as follows: 190 DEG C, 2.16kg, unit g/10min.The adulteration modified asphalt softening point of the 6% of polyolefin plastics particle is 80
DEG C or more, it such as can be 80-140 DEG C.The determination condition of 6% adulteration modified asphalt softening point are as follows: 940g70 pitch is heated to
175 DEG C, 60g plastic pellet is put into, 3000 turns of high-speed shearing machines are sheared 30 minutes, after can't see particle, taken under stirring
Sample pours softening point mould immediately.The parts by weight of polyolefin plastics particle may be 45-50 parts.
The parts by weight of Petropols or solid asphalt may be 0.1-19.9 parts, can also be 1-15 parts, or
5-10 parts.Petropols include C5 Petropols or C9 Petropols.
The softening point of Petropols is 60-120 DEG C, molecular weight 1000-5000.The normal-temperature of solid asphalt be solid or
Particle shape, pitch of the softening point at 100 DEG C or more can form or naturally occur (lake asphalt or rock drip by petroleum refining
It is green).The test method of softening point is JTG E20-2011T0606.
Stabilizer is selected from castor oil, petroleum sodium sulfonate, styrene, nylon toughener, modified polyacrylate, acid anhydrides (such as
Maleic anhydride etc.), any one or a few in epoxy resin or compound with epoxy group.
The total amount of stabilizer can be 0.1-5.9 parts, wherein the content ratio of each ingredient is following (with weight in stabilizer
Part indicates):
Stabilizer can contain 0-10 parts of castor oil, can also contain 0.1-9.9 parts of castor oil.Stabilizer can contain 0-15 parts
Petroleum sodium sulfonate, 0.1-14.9 parts of petroleum sodium sulfonates can also be contained.Stabilizer can contain 5-35 parts of styrene, can also be with
Containing 5.1-34.9 parts of styrene.Stabilizer can contain 0-15 parts of nylon tougheners, can also contain 0.1-14.9 parts of toughening nylons
Agent.Stabilizer can contain 0-35 parts of modified polyacrylates, can also contain 0.1-34.9 parts of modified polyacrylates.Stablize
Agent can contain 0-35 parts of cyclic acid anhydrides, can also contain 0.1-34.9 parts of cyclic acid anhydrides.Stabilizer can contain 0-35 parts of asphalt mixtures modified by epoxy resin
Rouge can also contain 0.1-34.9 parts of epoxy resin.
[preparation method of high-modulus asphalt modifying agent]
A kind of preparation method of high-modulus composite asphalt modifier comprising following steps:
(1), rubber wheel tire powder desulfurization is plasticized, obtains devulcanized rubber tyre talc；
(2), by 40-60 parts of devulcanized rubber tyre talcs, 30-60 parts of polyolefin plastics particles, 0-20 parts of Petropols or solid
Recombination reaction is carried out by double screw extruder after body pitch and 0-6 parts of stabilizer mixing, is then squeezed by single screw extrusion machine
It is granulated out；
Wherein, in step (1), normal pressure spiral Plasticator, spiro rod plasticizing machine, dynamic devulcanizer etc. is can be used in desulfurization plasticizing
Rubber powder desulfurization is plasticized equipment, and the temperature of desulfurization plasticizing is 160-260 DEG C.
In step (2), the temperature that double screw extruder carries out compound reaction time is 140-240 DEG C.
In step (2), the temperature of the extruding pelletization of single screw extrusion machine is 100-160 DEG C.
[high-modulus composite modified asphalt]
A kind of high-modulus composite modified asphalt comprising following components and its parts by weight:
80-85 parts of matrix pitch；
10-15 parts of high-modulus asphalt modifying agent；
0-0.4 parts of sulphur；
0-7 parts of lightweight oil.
Wherein, matrix pitch is the A grade pitch for meeting JTG-F40 requirement.
Light oil is selected from any one in tall oil (Tall Oil), rubber processing oil, furfural oil or decompression residuum.
The fatty acid and rosin acid-mixed that tall oil dark solution remaining when being from alkaline process (predominantly sulfate process) wood pulp processed is refined
Close object.Rubber processing oil includes paraffine base crude oil, naphthene base crude oil (naphthenic oil) and fragrant base oil (aromatic naphtha) etc..Furfural oil, i.e. furan
It mutters formaldehyde.Decompression residuum is also referred to as evaporated under reduced pressure residual oil, is the residue oil extracted out from Vacuum Tower In Refinery bottom.
The parts by weight of sulphur can be 0.1-0.2 parts.
The parts by weight of lightweight oil can be 0.1-6.9 parts.
In high-modulus composite modified asphalt of the invention, high-modulus asphalt modifying agent can uniformly divide in matrix pitch
It dissipates, to realize the resistance to deformation reinforcing effect to matrix pitch.
[preparation method of high-modulus composite modified asphalt]
A kind of preparation method of high-modulus composite modified asphalt comprising following steps:
(1), by 80-85 parts of matrix pitch injection swelling cans, 10-15 parts of high-modulus asphalt modifying agent and 0-7 parts are added
Lightweight oil (when necessary) is warming up to 170-180 DEG C and is swollen a period of time, obtains swollen mixt；
(2), swollen mixt is mixed to be added in high speed disperser afterwards (when necessary) with 0-0.4 parts of sulphur and is dispersed, obtained
High-modulus composite modified asphalt.
Wherein, in step (1), the time of swelling can be 0.5-2.5 hours, or 1-2 hours.By swelling
The particle in reaction system softens afterwards.
In step (2), high speed disperser is cutter or colloid mill.When high speed disperser is cutter, cutter
Shear temperature be 160-190 DEG C, shear time be 20-40 minute, shearing revolution be 3000-6000r/min.When needs add
When entering sulphur, it is preferred to use colloid mill.Sulphur needs to add by 10 minutes before colloid mill.The purpose of shearing is to make Gao Mo
It is distributed in matrix pitch to amount asphalt modifier uniform and smooth.
In step (2), when swollen mixt is mixed with sulphur, finished pot stirring hair is entered after crossing colloid mill dispersion
It educates.The time of stirring development is 60-120min, agitation revolution 400-1000r/min.When not adding sulphur, then without warp
Stirring development step is crossed, directly forms finished product after distribution.According to bench-scale laboratory test equipment, then can suitably shorten
Swelling time, and increase shear time, until shearing is uniformly.
[asphalt]
A kind of asphalt comprising following components and its parts by weight:
100 parts of mineral aggregate；
4.0-5.5 parts of high-modulus composite modified asphalt.
Wherein, mineral aggregate is the mixture of gather materials (coarse aggregate and fine aggregate) and miberal powders at different levels.
Coarse aggregate (JTG-F40 is shown in specific requirement) can be local common cutting optimal building stones source, comprising: limestone, flower
Gang Yan, tufa stone etc..Fine aggregate source is limestone or other alkali aggregates (JTG-F40 related request is shown in specific requirement).Mine
Powder is the levigate powder of limestone (JTG-F40 is shown in specific requirement).
Any one or a few in the building stones such as limestone, granite or tufa stone at different levels of gathering materials.Mineral aggregate
Gather materials for gradation, is used for most common continuous grading bituminous pavement upper layer AC-10, AC-13 or middle surface layer AC-16 and AC-
20 or other high-modulus mix types.
Miberal powder is the levigate powder of limestone, and JTG-F40 related request is shown in specific requirement.
Asphalt of the invention can be used for the anti-cracking function structure sheaf of bituminous pavement, have bituminous pavement very strong
Anti-crack ability and very long pavement life.
[preparation method of asphalt]
A kind of preparation method of asphalt comprising following steps:
(1), the mix temperature of asphalt mixing plant is set, and opens preheating, building stones feeding is opened after the completion of preheating, drying is simultaneously
So that the heating temperature of building stones is reached 175-190 DEG C, building stones at this temperature are respectively enterd into thicknesses at different levels after regrading
Hot aggregate bin；
(2), according to preset proportion, corresponding building stones (such as coarse aggregate is launched into mix pot from thickness hot aggregate bins at different levels
And fine aggregate) and miberal powder (form mineral aggregate), mineral aggregate is preheated to 175-190 DEG C in mix pot, dry mixing and 5-
Then 20s sprays into the high-modulus composite modified asphalt that temperature is 170-180 DEG C, wet-mixing and 35s-4min according to default dosage,
Discharging, obtains asphalt.
In step (2), drop temperature is 175-185 DEG C.
When the mix of laboratory test room, 15s can be closed with dry mixing by mixing and stirring pot, and 3-4min, mix temperature and drop temperature are closed in wet-mixing
With industrial mix temperature as above.When non-laboratory is mixed and stirred, 5s can be closed with dry mixing by mixing and stirring pot, and 35-45s is closed in wet-mixing.
The present invention is further illustrated for embodiment shown below.
Embodiment 1
Present embodiments provide a kind of preparation method of asphalt comprising following steps:
1, high-modulus asphalt modifying agent is prepared:
(1), rubber wheel tire powder desulfurization is plasticized, obtains devulcanized rubber tyre talc；
(2), by 60 kilograms of devulcanized rubber tyre talcs (Mooney 110, partial size are 30 mesh), 40 kilograms of low density polyethylene (LDPE) modelings
Expect particle (6% adulteration modified asphalt softening point > 100 DEG C, melt index 1.1g/10min), 2 kilograms of Petropols (softenings
103 DEG C of point) and the mixing of 2.6 kilograms of stabilizers after by double screw extruder reaction, then by single screw extrusion machine granulation, obtain
To high-modulus asphalt modifying agent.
Wherein, stabilizer includes following component: 0.8 kilogram of nylon toughener, 0.8 kilogram of castor oil, petroleum sodium sulfonate 0.6
Kilogram, 0.4 kilogram of styrene, 0.5 kilogram of maleic anhydride.
In step (2), double screw extruder first carries out mixed refining process, and then low temperature squeezes out.The temperature of mixed refining process is
190 DEG C, extrusion temperature is 160 DEG C.
2, high-modulus composite modified asphalt is prepared；
(1), it is calculated with the total weight parts of high-modulus composite modified asphalt, by 86 parts of matrix pitches (pitch 70#A grades of the East Sea)
It injects in swelling can, 13 parts of high-modulus asphalt modifying agent is added, be warming up to 170-180 DEG C and be swollen a period of time, be swollen
Mixture；
(2), swollen mixt is directly added into high speed disperser (such as high-speed shearing machine) dispersing shear 30 minutes, is sheared
Temperature be 190 DEG C, shearing revolution be 4000r/min, obtain high-modulus composite modified asphalt.
3, asphalt is prepared.
(1), the mix temperature of asphalt mixing plant is set, and opens preheating, building stones feeding is opened after the completion of preheating, 180
DEG C baking oven in it is dry, and the heating temperature of building stones is made to reach 180 DEG C, by building stones at this temperature after regrading point
It Jin Ru not thickness hot aggregate bins at different levels；
(2), according to preset proportion, from thickness hot aggregate bins at different levels launched into mix pot corresponding building stones and miberal powder (with
Form mineral aggregate), prepared mineral aggregate is heated 4 hours in 180 DEG C of baking ovens or more, by mineral collection in mix pot
Material is preheated to 175-190 DEG C, and dry mixing and 5-20s, the high-modulus for being then 170-180 DEG C according to default dosage penetrating temperature are multiple
Modified pitch, wet-mixing and 3min (under laboratory condition) are closed, discharging obtains asphalt.
In step (2), mineral aggregate is prepared by AC-20 gradation, including Guangdong Fugang expensive field stone field produces granite thickness
Gather materials the miberal powder produced with Li Shan building materials Co., Ltd of Boluo County.It is at different levels to gather materials (building stones) and the specification and weight ratio of miberal powder
Are as follows: 10~20mm:10~15mm:5~10mm:3~6mm:0~3mm: miberal powder=18:25:23:6:22:6.
In step (3), by examination as defined in asphalt mixture mixing proportion design method as defined in JTG F40 and JTG E20
Proved recipe method carries out specimen molding and mix-design, obtains asphalt optimum content.
For embodiment 1, using resulting target proportion (building stones proportion, asphalt content), according to JTG E20 accordingly at
Type method makes test specimen, is tested for the property to mixture.Surveyed performance include modulus (15 DEG C of 10Hz dynamic resilience modulus),
High-temperature behavior (dynamic stability) and cryogenic property (the curved drawing damaged deformation of girder), water resistant damage performance (TSR).
Embodiment 2
The present embodiment replaces with " the LDPE: Low-density polyethylene plastics particle " in step 1 (2) section in embodiment 1 " poly-
Propylene ".Remaining parameter constant.
Embodiment 3
" LDPE: Low-density polyethylene plastics particle " in step 1 (2) section in embodiment 1 is replaced with " two by the present embodiment
Grade PE reclaimed materials ", melt index 1.5g/10min, 6% 89 DEG C of adulteration modified asphalt softening point.Remaining parameter constant.
Embodiment 4
" LDPE: Low-density polyethylene plastics particle " in step 1 (2) section in embodiment 1 is replaced with " two by the present embodiment
Grade PE reclaimed materials ", melt index 1.5g/10min, 6% 89 DEG C of adulteration modified asphalt softening point." second level PE reclaimed materials "
Content is 50 kilograms, and the weight of devulcanized rubber tyre talc is 50 kilograms.Remaining parameter constant.
Embodiment 5
The present embodiment will increase the C9 resin that softening point is 110 DEG C in step 1 (2) section in embodiment 1 and (belong to petroleum
Resin) 10 parts.Remaining parameter constant.
Embodiment 6
The present embodiment will increase 20 parts of solid asphalt of softening point > 100 DEG C in step 1 (2) section in embodiment 1.Its
Remaining parameter constant.
Comparative example 1
This comparative example provides a kind of preparation method of asphalt comprising following steps:
(1) it by 4.2 parts of SBS, is added in 95.8 parts of matrix pitches, is warmed to 180 DEG C.30 are sheared under high-speed shearing machine
Minute (shearing revolution 4000r/min)；Stirring 120 minutes (revolution 600r/min) of development, adds in 10 minutes after stirring starts
Enter the sulphur that weight percent is 0.1%, continue to stir, SBS modified pitch is made.
(2) gathering materials by the preparation of AC-20 gradation, (Guangdong Fugang expensive field stone field produces granite thickness and gathers materials, and filler is Boluo County
The miberal powder of Li Shan building materials Co., Ltd production, each shelves gather materials specification and ratio are as follows: 10~20mm:10~15mm:5~10mm:3
~6mm:0~3mm: miberal powder=18:25:23:6:22:6), it is prepared gather materials heated 4 hours in 180 DEG C of baking ovens or more.Institute
It obtains modified pitch (175-185 DEG C), 3 minutes hot mixs of laboratory is carried out with gathering materials by the heat prepared, by as defined in JTG F40
Test method as defined in asphalt mixture mixing proportion design method and JTG E20 carries out specimen molding and mix-design, obtains
Take asphalt optimum content.
(3) using resulting target proportion (building stones proportion, asphalt content), according to the corresponding test method of JTG E20, system
Make the performance test that test specimen carries out mixture.Surveyed performance includes that modulus (15 DEG C of 10Hz dynamic resilience modulus), high-temperature behavior are (dynamic
Stability) and cryogenic property (the curved drawing damaged deformation of girder), water resistant damage performance (TSR).
Comparative example 2
This comparative example provides a kind of preparation method of asphalt comprising following steps:
(1) it obtains high-quality dry method in the market and adds anti-rut agent A, survey 6% 71 DEG C of adulteration modified asphalt softening point.
(2) gathering materials by the preparation of AC-20 gradation, (Guangdong Fugang expensive field stone field produces granite thickness and gathers materials, and filler is Boluo County
The miberal powder of Li Shan building materials Co., Ltd production, each shelves gather materials specification and ratio are as follows: 10~20mm:10~15mm:5~10mm:3
~6mm:0~3mm: miberal powder=18:25:23:6:22:6), it is prepared gather materials heated 4 hours in 180 DEG C of baking ovens or more.It will
Anti-rut agent A carries out the hot dry mixing of laboratory in 1.5 minutes with by the building stones (185 DEG C baking oven 4 hours or more) of AC-20 gradation configuration
It closes, East Sea board 70#A grade matrix pitch (160 DEG C) hot wet-mixing is then added and closes 3 minutes.It is mixed by pitch as defined in JTG F40
Expect test method as defined in mixing proportion design method and JTG E20, carry out specimen molding and mix-design, obtains best drip
Green dosage.
(3) using resulting target proportion (building stones proportion, asphalt content), according to the corresponding test method of JTG E20, system
Make the performance test that test specimen carries out mixture.Surveyed performance includes that modulus (15 DEG C of 10Hz dynamic resilience modulus), high-temperature behavior are (dynamic
Stability) and cryogenic property (the curved drawing damaged deformation of girder), water resistant damage performance (TSR).
Comparative example 3
This comparative example provides a kind of preparation method of asphalt comprising following steps:
(1) the natural lake asphalt in Trinida is obtained.18 parts of lake asphalt are stirred and are put under (revolution 600r/min) state
In 82 parts of board 70#A grades of 160 DEG C of East Sea pitches, it is warming up to 175 DEG C and stirs 1 hour, lake asphalt melts completely, by the side E20 JTG
Method measures resulting reconciliation Asphalt Penetration 26.
(3) gathering materials by the preparation of AC-20 gradation, (Guangdong Fugang expensive field stone field produces granite thickness and gathers materials, and filler is Boluo County
The miberal powder of Li Shan building materials Co., Ltd production, each shelves gather materials specification and ratio are as follows: 10~20mm:10~15mm:5~10mm:3
~6mm:0~3mm: miberal powder=18:25:23:6:22:6), it is prepared gather materials heated 4 hours in 180 DEG C of baking ovens or more.Institute
It must reconcile pitch (175-185 DEG C), 3 minutes hot mixs of laboratory be carried out with gathering materials by the heat prepared, by as defined in JTG F40
Test method as defined in asphalt mixture mixing proportion design method and JTG E20 carries out specimen molding and mix-design, obtains
Take asphalt optimum content.
(4) using resulting target proportion (building stones proportion, asphalt content), according to the corresponding test method of JTG E20, system
Make the performance test that test specimen carries out mixture.Surveyed performance includes that modulus (15 DEG C of 10Hz dynamic resilience modulus), high-temperature behavior are (dynamic
Stability) and cryogenic property (the curved drawing damaged deformation of girder), water resistant damage performance (TSR).
Test case
Product made from embodiment 1 to 6 and comparative example 1 to 3 is tested according to relevant test method, as a result such as following table
Shown in 1.
1 performance of asphalt mixture of table tests table
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright；Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiments without having to go through creative labor；Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (10)
1. a kind of high-modulus asphalt modifying agent, it is characterised in that: including following components and its parts by weight:
40-60 parts of devulcanized rubber tyre talc；
30-60 parts of polyolefin plastics particle；
Petropols or 0-20 parts of solid asphalt；
0-6 parts of stabilizer.
2. high-modulus asphalt modifying agent according to claim 1, it is characterised in that:
The devulcanized rubber tyre talc be by crumb rubber it is broken after, 160-260 DEG C of progress desulfurization be made；And/or
Any one or two kind of the polyolefin plastics particle in polyethylene particles and polypropylene particles；And/or
The stabilizer is selected from castor oil, petroleum sodium sulfonate, styrene, nylon toughener, modified polyacrylate, acid anhydrides, ring
Any one or a few in oxygen resin or compound with epoxy group.
3. high-modulus composite asphalt modifier according to claim 2, it is characterised in that:
The melt index of the polyolefin plastics particle be 1-15g/10min, 6% adulteration modified asphalt softening point 80 DEG C with
On；And/or
The Mooney index of the devulcanized rubber tyre talc is between 50-190；And/or
The stabilizer can contain 0-10 parts of castor oil, can also contain 0.1-9.9 parts of castor oil；And/or
The stabilizer can contain 0-15 parts of petroleum sodium sulfonate, can also contain 0.1-14.9 parts of petroleum sodium sulfonates；And/or
The stabilizer can contain 5-35 parts of styrene, can also contain 5.1-34.9 parts of styrene；And/or
The stabilizer can contain 0-15 parts of nylon toughener, can also contain 0.1-14.9 parts of nylon tougheners；And/or
The stabilizer can contain 0-35 parts of modified polyacrylates, can also contain 0.1-34.9 parts of modified polyacrylates；
And/or
The stabilizer can contain 0-35 parts of acid anhydrides, can also contain 0.1-34.9 parts of acid anhydrides；And/or
The stabilizer can contain 0-35 parts of epoxy resin, can also contain 0.1-34.9 parts of epoxy resin.
4. a kind of preparation method of high-modulus composite asphalt modifier, characterized by the following steps:
(1), rubber wheel tire powder desulfurization is plasticized, obtains devulcanized rubber tyre talc；
(2), 40-60 parts of devulcanized rubber tyre talcs, 30-60 parts of polyolefin plastics particles, 0-20 parts of Petropols or solid are dripped
Recombination reaction is carried out by double screw extruder after green and 0-6 parts of stabilizer mixing, is then granulated by single screw extrusion machine；
Preferably, in step (1), the temperature of desulfurization plasticizing is 160-260 DEG C；And/or
In step (2), the temperature that double screw extruder carries out compound reaction time is 140-240 DEG C；And/or
In step (2), the temperature that single screw extrusion machine is granulated is 100-160 DEG C.
5. a kind of high-modulus composite modified asphalt, it is characterised in that: including following components and its parts by weight:
80-85 parts of matrix pitch；
10-15 parts of high-modulus asphalt modifying agent；
0-0.4 parts of sulphur；
0-7 parts of lightweight oil.
6. high-modulus composite modified asphalt according to claim 5, it is characterised in that:
The matrix pitch is the A grade pitch for meeting JTG-F40 requirement；And/or
The high-modulus asphalt modifying agent is high-modulus asphalt modifying agent described in claims 1 to 3 any one；And/or
The light oil is selected from any one in tall oil, rubber processing oil, furfural oil or decompression residuum；And/or
The parts by weight of the sulphur are 0.1-0.2 parts；And/or
The parts by weight of the lightweight oil are 0.1-6.9 parts.
7. a kind of preparation method of high-modulus composite modified asphalt, characterized by the following steps:
(1), 80-85 parts of matrix pitches, 10-15 parts of high-modulus asphalt modifying agent and 0-7 parts of light oils are dispensed in swelling can,
It is warming up to 170-180 DEG C and is swollen a period of time, obtain swollen mixt；
(2), it is added in high speed disperser and disperses after mixing the swollen mixt with 0-0.4 parts of sulphur, it is multiple to obtain high-modulus
Close modified pitch；
Preferably, in step (2), the high speed disperser is cutter or colloid mill；And/or
In step (2), when the swollen mixt is mixed with the sulphur, it is stirred development after distribution；
It is further preferred that the shear temperature of the cutter is 160-190 DEG C, shear time 20-40 in step (2)
Minute, shearing revolution is 3000-6000r/min；And/or
In step (2), the time of the stirring development is 60-120min, agitation revolution 400-1000r/min.
8. a kind of asphalt, it is characterised in that: including following components and its parts by weight:
100 parts of mineral aggregate；
4.0-5.5 parts of high-modulus composite modified asphalt；
The high-modulus composite modified asphalt is high-modulus composite modified asphalt described in claim 5 or 6.
9. asphalt according to claim 8, it is characterised in that:
The mineral aggregate is the mixtures at different levels to gather materials with miberal powder；
Preferably, any one or a few in limestone, granite or tufa stone at different levels of gathering materials；And/or
The miberal powder is the levigate powder of limestone.
10. a kind of preparation method of asphalt, characterized by the following steps:
Mineral aggregate is preheated to 175-190 DEG C, dry mixing and 5-20s, the high-modulus that then addition temperature is 170-180 DEG C are compound
Modified pitch, wet-mixing and 35s-4min, discharging, obtain asphalt.
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| CN110922657A (en) * | 2019-12-05 | 2020-03-27 | 达州市禾原再生资源有限公司 | Thermal regeneration asphalt mixture modifier |
| KR102127999B1 (en) * | 2020-01-17 | 2020-06-29 | 홍상일 | Asphalt concrete compound containing of high strength asphalt modifier composition and a method using the same |
| CN112574583A (en) * | 2020-12-21 | 2021-03-30 | 徐州市融道路桥有限公司 | High-modulus asphalt material with excellent durability and preparation method thereof |
| CN112608607A (en) * | 2020-12-04 | 2021-04-06 | 中路交科科技股份有限公司 | High-strength modified asphalt and preparation method thereof |
| CN112920612A (en) * | 2021-01-25 | 2021-06-08 | 贵州中路交通技术有限公司 | High modulus asphalt additive and preparation process thereof |
| CN113150566A (en) * | 2020-12-07 | 2021-07-23 | 南京兴佑交通科技有限公司 | High-melt-index high-modulus asphalt mixture additive and preparation method and application thereof |
| CN113462177A (en) * | 2021-07-08 | 2021-10-01 | 江苏聚科特新材料科技有限公司 | Polymer composite modified asphalt and highway pavement structure thereof |
| CN114804726A (en) * | 2022-05-12 | 2022-07-29 | 徐州市公路工程总公司 | EME-14 high-modulus asphalt concrete and preparation method thereof |
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| CN110922657A (en) * | 2019-12-05 | 2020-03-27 | 达州市禾原再生资源有限公司 | Thermal regeneration asphalt mixture modifier |
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| CN113150566A (en) * | 2020-12-07 | 2021-07-23 | 南京兴佑交通科技有限公司 | High-melt-index high-modulus asphalt mixture additive and preparation method and application thereof |
| CN113150566B (en) * | 2020-12-07 | 2022-04-12 | 南京兴佑交通科技有限公司 | High-melt-index high-modulus asphalt mixture additive and preparation method and application thereof |
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| CN112920612A (en) * | 2021-01-25 | 2021-06-08 | 贵州中路交通技术有限公司 | High modulus asphalt additive and preparation process thereof |
| CN113462177A (en) * | 2021-07-08 | 2021-10-01 | 江苏聚科特新材料科技有限公司 | Polymer composite modified asphalt and highway pavement structure thereof |
| CN114804726A (en) * | 2022-05-12 | 2022-07-29 | 徐州市公路工程总公司 | EME-14 high-modulus asphalt concrete and preparation method thereof |
| CN116589221A (en) * | 2023-05-17 | 2023-08-15 | 江苏同禹新材料科技有限公司 | Modified high-modulus agent for asphalt and preparation method and application thereof |
| CN116589221B (en) * | 2023-05-17 | 2024-04-16 | 江苏同禹新材料科技有限公司 | Modified high-modulus agent for asphalt and preparation method and application thereof |
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