CN105153511A - Modified asphalt mixture modifier and preparation method therefor - Google Patents
Modified asphalt mixture modifier and preparation method therefor Download PDFInfo
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- CN105153511A CN105153511A CN201510438516.9A CN201510438516A CN105153511A CN 105153511 A CN105153511 A CN 105153511A CN 201510438516 A CN201510438516 A CN 201510438516A CN 105153511 A CN105153511 A CN 105153511A
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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Abstract
The invention relates to a modified asphalt mixture modifier and a preparation method therefor. The modified asphalt mixture modifier is prepared from the following components in parts by weight: 60-100 parts of a component A, 15-25 parts of a component B and 15-25 parts of a component C, wherein the component A is prepared from the following components in parts by weight: 60-100 parts of recovered polyethylene, 20-40 parts of polyethylene, 10-20 parts of auxiliaries and 5-10 parts of color masterbatch; the component B is prepared from the following components in parts by weight: 60-100 parts of recovered rubber powder, 20-40 parts of rubber powder and 3-5 parts of latex; the component C is prepared from the following components in parts by weight: 60-100 parts of inorganic powder and 20-40 parts of an asphalt material. According to the modifier provided by the invention, the comprehensive performance of the modified asphalt mixture can be improved. By directly inputting the modifier into a stirring cylinder of a mixing plant, stirring and modification are synchronously implemented. The produced modified asphalt mixture is superior to a conventional modified asphalt mixture in performance.
Description
Technical field
The present invention relates to a kind of modified asphalt mixture properties-correcting agent and preparation method thereof.
Background technology
Asphalt is gathered materials and appropriate asphaltic binder at the thickness of certain grating, a kind of mixture under suitable condition through fully mixing and stirring.Along with the increase of road traffic amount, the increase of traffic loading, the deterioration of climatope, the requirement of road construction, maintenance and reconstruction and extension project road pavement material is more and more higher, common ground surface material cannot meet the demand of prevailing traffic conditions, modified asphalt mixture, with its superior pavement performance, is applied comparatively extensive.
Tradition modified asphalt mixture, based on modified asphalt technology, is the thickness of certain grating gathered materials and a kind of mixture of appropriate modified asphalt binders under suitable condition through fully mixing and stirring.Modifying asphalt refers to the additives (properties-correcting agent) such as admixture rubber, resin high molecular polymer, levigate rubber powder or other fillers, or takes measures such as pitch mild oxidation processing, the performance of pitch is improved and the asphaltic binder made.Current modifying asphalt has two kinds of production methods: one is field fabrication, docks with asphalt batching plant, and this mode need not consider the stability in storage of modifying asphalt, production process is convenient to monitoring, but its output is little, an amalgamator needs a modifying asphalt on-site producing devices, and cost performance is low; Second method is finished product asphaltum, and advantage is steady quality, but receives the restriction of the condition such as transportation tank car, storage facilities.First produce the conventional solution that regenerating modified asphalt produces modified asphalt mixture, there is bottleneck and the deficiency of some technology, environment, economic aspect: (1) ageing of asphalt.Preparing in modifying asphalt process, needing first asphalt heating to be carried out mixing to certain temperature and properties-correcting agent, swelling, shear, grow, the operation such as storage, Heating temperature is high, the time length is long, and pitch is easily aging, affects the endurance quality of bituminous pavement; (2) properties-correcting agent and pitch are emanated.Matrix pitch is complicated chemical system, and different matrix pitch Four composition is different, has compatibleness with properties-correcting agent.In addition, the impact of production technique, equipment and parameter, makes modifying asphalt very easily segregation phenomenon occur in storage process, and namely properties-correcting agent and pitch layering, have a strong impact on the use properties of modifying asphalt; (3) quality is unstable.Modifying asphalt is a thermodynamic system, and along with the prolongation in storage time, the performance index of modifying asphalt also there occurs decay in various degree, to such an extent as to do not reach engine request; (4) cost is high.The production system that modifying asphalt need of production is special, comprising expensive shears or colloidal mill, floor space is large, needs to build the Infrastructure such as production plant; (5) energy consumption is large.Modifying asphalt production, storage, transport all need to realize at relatively high temperatures, and this needs a large amount of heat energy to maintain; (6) noxious gas emission.In Modified Bitumen Production Procedure, Heating temperature is generally 180 ~ 190 DEG C, and even more than 200 DEG C, under high temperature, pitch and properties-correcting agent can give off certain obnoxious flavour, cause disadvantageous effect to construction environment and operator.
Novel modified asphalt compound technology is on the basis of plain asphalt compound production technology, what modified asphalt mixture additive is directly added to batching plant mixes in cylinder, do not increase more mechanical means, do not change traditional production technique, realize the object improving performance of asphalt mixture.Compared with traditional modified asphalt mixture technology, novel modified asphalt compound technology has energy-saving and environmental protection, easy construction, quality are easy to the feature that controls, and having good marketing application prospect, is the new trend of low carbon materials utilisation technology.In novel modified asphalt compound technology, properties-correcting agent is the core of this technology, has very high requirement to its performance.The anti-rut agent that existing market has come into operation is a type of novel modified asphalt mixed material modifier, mainly lays particular emphasis on and improves and prevention asphalt pavement rut disease, improve the high temperature anti-rut behavior of asphalt.Novel modified asphalt compound not only requires the high-temperature behavior improving asphalt, take into account low temperature performance of asphalt simultaneously, need to carry out system research and development to the comprehensive asphalt mixed material modifier product of performance and application method thereof, thus realize novel modified asphalt compound technology.
Summary of the invention
The object of the present invention is to provide a kind of modified asphalt mixture properties-correcting agent, asphalt over-all properties can be improved, mix in cylinder by what properties-correcting agent is directly put into batching plant, realization is mixed and stirred and modification synchronization implementation, and the modified asphalt mixture performance of production is better than traditional modified asphalt mixture; Another object of the present invention is to the preparation method that a kind of modified asphalt mixture properties-correcting agent is provided; 3rd object of the present invention is to provide a kind of application method of modified asphalt mixture properties-correcting agent.To achieve these goals,
A kind of modified asphalt mixture properties-correcting agent, its difference is, is made up of the component of following weight ratio: component A 60 ~ 100 parts, B component 15 ~ 25 parts, component C 15 ~ 25 parts;
Wherein component A is made up of the component of following weight part: recycle polyethylene 60 ~ 100 parts, polyethylene 20 ~ 40 parts, auxiliary agent 10 ~ 20 parts, colour batch 5 ~ 10 parts;
B component is made up of the component of following weight part: reclaim rubber powder 60 ~ 100 parts, 20 ~ 40 parts, rubber powder end, 3 ~ 5 parts, latex;
Component C is made up of the component of following weight part: inorganic powder 60 ~ 100 parts, bituminous material 20 ~ 40 parts.
Recycle polyethylene refers to that density is less than 1g/cm
3recycle polyethylene, the particle diameter of recycle polyethylene is less than or equal to 5mm;
Component A: polyethylene (PE) refers at least one in Low Density Polyethylene (LDPE), medium-density polyethylene (MDPE), high density polyethylene(HDPE) (HDPE), LLDPE (LLDPE) or multiple mixing;
Auxiliary agent refers at least one in polyethylene wax (PE-WAX), chlorinatedpolyethylene (CPE), ethene-vinyl acetate copolymer (EVA), ethylenebisstearamide (EBS) or multiple mixing.
Colour batch refers to polyethylene color masterbatch.
B component: reclaim rubber powder and refer to and reclaim tire glue powder, reclaim footwear rubber powders, reclaim at least one in scrap stock rubber powder or multiple mixing, the fineness scope of described recovery tire glue powder is 30 ~ 80 orders;
Rubber powder end refers at least one in sbr powder (SBR), styrene-butadiene-styrene block copolymer (SBS) or multiple mixing;
Latex refers to natural rubber latex, styrene-butadiene latex, polychloroprene latex, at least one in butadiene acrylonitrile rubber Ruzhong or multiple mixing, and the latex solid content of described latex is more than or equal to 40%.
Component C: inorganic powder refers at least one in nano-calcium carbonate, nano-sized magnesium hydroxide, nano silicon, nano titanium oxide, talcum powder, kaolin, polynite, mica, flyash, carbon powder, wollastonite, diatomite, zeolite powder or multiple mixing; Described bituminous material refers at least one in petroleum pitch, building asphalt, lake pitch, rock asphalt or multiple mixing.
A preparation method for modified asphalt mixture properties-correcting agent, its special character is, comprises the following steps:
1] component A, B component, component C are joined in screw extrusion press according to weight ratio, through batch mixing, melting, extrude, tie rod, pelletizing operation be prepared into modified asphalt mixture modified grain; Be ground into≤2.36mm powder-granule material.Weight ratio shared by component A, B component, component C is: component A 60 ~ 100 parts, B component 15 ~ 25 parts, component C 15 ~ 25 parts;
Wherein component A preparation method is:
First become to be less than or equal to the powder of 5mm by recycle polyethylene grinding or extruding pelletization;
According to weight part recycle polyethylene powder, polyethylene, auxiliary agent, colour batch mixed in mixer again and be component A, recycle polyethylene 0 ~ 100 part, polyethylene 20 ~ 40 parts, auxiliary agent 10 ~ 20 parts, colour batch 5 ~ 10 parts;
B component preparation method:
According to weight ratio, first recovery rubber powder is mixed with rubber powder end;
Latex is evenly sprayed onto composite grain surface with vaporific, and composite grain is dried and is B component, and wherein weight part is: reclaim rubber powder 60 ~ 100 parts, 20 ~ 40 parts, rubber powder end, 3 ~ 5 parts, latex;
Component C preparation method:
According to weight ratio, the inorganic powder of one-component is directly added and joins the Youth League in material machine; Or the inorganic powder of various ingredients first joined in mixer mix and again inorganic powder after mixing is joined in a material machine;
Pitch heat is melted to flow state, in the inorganic powder in the group's of being added drop-wise to material machine, rolls into a ball into small-particle and be component C; Wherein the weight part of component C is: inorganic powder 60 ~ 100 parts, bituminous material 20 ~ 40 parts;
2] as required, modified asphalt mixture modified grain is joined in crusher pulverize.
Recycle polyethylene refers to that density is less than 1g/cm
3recycle polyethylene, the particle diameter of described recycle polyethylene is less than or equal to 5mm;
Polyethylene (PE) refers at least one in Low Density Polyethylene (LDPE), medium-density polyethylene (MDPE), high density polyethylene(HDPE) (HDPE), LLDPE (LLDPE) or multiple mixing;
Auxiliary agent refers at least one in polyethylene wax (PE-WAX), chlorinatedpolyethylene (CPE), ethene-vinyl acetate copolymer (EVA), ethylenebisstearamide (EBS) or multiple mixing;
Colour batch refers to polyethylene color masterbatch.
Reclaim rubber powder to refer to and reclaim tire glue powder, reclaim footwear rubber powders, reclaim at least one in scrap stock rubber powder or multiple mixing, the fineness scope of described recovery tire glue powder is 30 ~ 80 orders;
Rubber powder end refers at least one in sbr powder (SBR), styrene-butadiene-styrene block copolymer (SBS) or multiple mixing;
Latex refers to natural rubber latex, styrene-butadiene latex, polychloroprene latex, at least one in butadiene acrylonitrile rubber Ruzhong or multiple mixing, and the latex solid content of described latex is more than or equal to 40%.
Inorganic powder refers at least one in nano-calcium carbonate, nano-sized magnesium hydroxide, nano silicon, nano titanium oxide, talcum powder, kaolin, polynite, mica, flyash, carbon powder, wollastonite, diatomite, zeolite powder or multiple mixing; Described bituminous material refers at least one in petroleum pitch, building asphalt, lake pitch, rock asphalt or multiple mixing.
The preparation method of the modified asphalt mixture of modified asphalt mixture properties-correcting agent, its special character is: comprise the following steps:
1] will gather materials and be heated to 175 ~ 185 DEG C, what according to design level proportioning example, gathering materials after heating is joined batching plant mixes in cylinder, artificial or batch charger adds modified asphalt mixture properties-correcting agent simultaneously, and the addition of modified asphalt mixture properties-correcting agent accounts for 0.4% ~ 1.0% of quality of asphalt mixtures; Asphalt comprise gather materials, modified asphalt mixture properties-correcting agent and petroleum pitch;
2] mixed and stirred for 20 ~ 30 seconds, then add the petroleum pitch that temperature is 150 ~ 160 DEG C;
3] mixed and stirred for 10 ~ 20 seconds, then add breeze and mix and stir and can be prepared into modified asphalt mixture 10 ~ 20 seconds; Modified asphalt mixture drop temperature scope 160 ~ 180 DEG C.
The preparation method of the modified asphalt mixture of modified asphalt mixture properties-correcting agent, its special character is: comprise the following steps:
1] reclaimed asphalt mixture after fragmentation is heated to 180 ~ 190 DEG C, what according to design level proportioning example, the reclaimed asphalt mixture after heating is joined batching plant mixes in cylinder, artificial or batch charger adds modified asphalt mixture properties-correcting agent simultaneously, and the addition of modified asphalt mixture properties-correcting agent accounts for 0.4% ~ 1.0% of quality of asphalt mixtures; Described asphalt comprises reclaimed asphalt mixture, modified asphalt mixture properties-correcting agent and petroleum pitch;
2] mixed and stirred for 20 ~ 30 seconds, then add the petroleum pitch that temperature is 150 ~ 160 DEG C;
3] mixed and stirred for 10 ~ 20 seconds, add breeze and mix and stir and can be prepared into modification regeneration asphalt 10 ~ 20 seconds, modification regeneration asphalt drop temperature scope 165 ~ 185 DEG C.
The technical requirement of modified asphalt mixture properties-correcting agent:
(1) physical technique index request
(2) modification compound technical requirement
Modified asphalt mixture properties-correcting agent addition accounts for 0.4% ~ 1.0% of quality of asphalt mixtures, at gradation design rationally, gather materials, under pitch index meets the condition of corresponding code requirement:
Modified asphalt mixture wheel tracking test dynamic stability >=4000 time/mm
Modified asphalt mixture low-temperature bending test breaking strain >=2800 μ ε
The advantage that the present invention has:
1, asphalt mixed material modifier of the present invention is made up of A, B, C tri-components, and component A take polyethylene as main component.Polyethylene belongs to thermoplastic resin material, exceeding under its vicat temperature condition, melting becomes deformable body, by reaching with the mutual modifying function of asphalt the high temperature anti-rut behavior improving asphalt, but polyethylene acts on without raising low temperature performance of asphalt and other performances.B component is the glue class component through surface modification, can significantly improve the crack resistance at low-temperature of asphalt.Component C is made up of pitch and filler, component A, B component effectively link together by physics chemical action by asphalt component, form composite rubber-plastic material, and properties-correcting agent needs to add in asphalt in application process, owing to containing asphalt component in asphalt mixed material modifier of the present invention, therefore facilitate the consistency of properties-correcting agent and asphalt greatly, better play its modification performance.
What 2, asphalt mixed material modifier of the present invention directly added asphalt batching plant to mixes in cylinder, and the modified asphalt mixture excellent performance of preparation, meets or exceeds existing relevant modified asphalt mixture demand of technical standard.Modified asphalt mixture properties-correcting agent application of the present invention is convenient, and energy-conserving and environment-protective are a kind of low-carbon (LC), economic green pavement material, have wide marketing application prospect.
3, compared with traditional modified asphalt mixture, prepare one ton of modified asphalt mixture and can save coal 39.4kg, reduce Carbon emission 144.6kg, reduce sulfur dioxide emissions 4.728kg, reduce emitting nitride 0.591kg.Making 1km bituminous pavement, modified asphalt mixture saves 314 tons, coal than traditional modified asphalt mixture, reduce Carbon emission 1151 tons, reduce sulfur dioxide emissions 38 tons, (road surface thickness is pressed 15cm and is calculated to reduce emitting nitride 5 tons, width by 22m (two-way 4 tracks), compound mean density 2.54g/cm3, average void fraction 5%).As can be seen here, the effects of energy saving and emission reduction of modified asphalt mixture is remarkable.
4, modified asphalt mixture properties-correcting agent of the present invention, adds in asphalt, is improved the over-all properties of asphalt by the mechanism of action such as softening, melting, thickening, modification.Properties-correcting agent adds to during high temperature gathers materials and carries out dry mixing, and properties-correcting agent heat is softened rapidly, and then reaches molten state, produces powerful shearing force in the process of mixing and stirring of gathering materials, make the properties-correcting agent of melting with trickleer evenly state be present in and gather materials.When adding heated bitumen and mixing and stirring, the properties-correcting agent of molten state is compatible with pitch rapidly, reach even modification, simultaneously due to oil suction, the swelling action of properties-correcting agent, reach the effect to asphalt mastic thickening, thus increase the thickness of surface of aggregate asphalt membrane, reduce the amount of free pitch between gathering materials, and then increase asphalt over-all properties.
Embodiment
Embodiment 1:
Take 80kg recycle polyethylene particle, 30kg Low Density Polyethylene, 5kg polyethylene wax, 10kg ethene-vinyl acetate copolymer, 7kg polyethylene color masterbatch, above-mentioned material is added in mixer, mixes and be component A.
Take 80kg30 order recovery tyre rubber powder, 30kg sbr powder joins in mixer, is that the styrene-butadiene latex of 50% is evenly sprayed onto composite grain surface with vaporific in mixing process by 4kg solid content, then composite grain oven dry is B component.
Take 30kg nano-calcium carbonate, 30kg nano silicon, 20kg carbon powder, above-mentioned material is joined in mixer, mix, again mixture is joined in a material machine, 30kg lake pitch is heated to 160 DEG C and is hot melt to flow state, again fluidised form pitch is added drop-wise in the powder in a material machine, rolls into a ball into small-particle and be component C.
Take above-mentioned component A 80kg, B component 20kg, component C 20kg to join respectively in the hopper of screw extrusion press, through batch mixing, melting, extrude, tie rod, the operation such as pelletizing be prepared into modified asphalt mixture modified grain.Embodiment 2 ~ embodiment 4 forms as shown in table 1, and preparation method is identical with embodiment 1.
Table 1 is embodiment 2-embodiment 4 synopsis
Table 2 prepares modified asphalt mixture properties-correcting agent physical technique Indexs measure result synopsis for embodiment 1 ~ embodiment 4
| Properties-correcting agent technical indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Mode of appearance | Solid cylinder particle | Solid cylinder particle | Solid cylinder particle | Solid cylinder particle |
| Color | Black | Black | Black | Black |
| Particle diameter, mm | ≤4.75 | ≤4.75 | ≤4.75 | ≤4.75 |
| Water content, % | 0.1 | 0.3 | 0.2 | 0.1 |
| Density, g/cm 3 | 0.93 | 0.94 | 0.97 | 0.95 |
| Softening temperature, DEG C | 135℃ | 145 | 140 | 135 |
Embodiment 5:
Gathering materials of AC-20 type grating is heated to 175 ~ 185 DEG C, what according to design level proportioning example, gathering materials after heating is joined batching plant mixes in cylinder, artificial or batch charger adds modified asphalt mixture properties-correcting agent prepared by embodiment 1 simultaneously, the addition of properties-correcting agent accounts for 0.5% of quality of asphalt mixtures, mixed and stirred for 25 seconds, add the 90# petroleum pitch that temperature is 155 DEG C again, mixed and stirred for 15 seconds, then add breeze and mix and stir and can be prepared into modified asphalt mixture 15 seconds.Modified asphalt mixture drop temperature 170 DEG C, paving material 160 DEG C, rolls temperature 140 DEG C.
The performance index detected result of above-mentioned modified asphalt mixture:
Modified asphalt mixture wheel tracking test dynamic stability 6027 times/mm
Modified asphalt mixture low-temperature bending test breaking strain 3023 μ ε
Embodiment 6 ~ embodiment 8 adds the properties-correcting agent prepared by embodiment 2 ~ embodiment 4 respectively, and the performance index detected result of modified asphalt mixture is as shown in table 3.
Table 3 is the performance index detected result synopsis of embodiment 5 ~ embodiment 8 modified asphalt mixture
Claims (10)
1. a modified asphalt mixture properties-correcting agent, is characterized in that, is made up of the component of following weight ratio: component A 60 ~ 100 parts, B component 15 ~ 25 parts, component C 15 ~ 25 parts;
Wherein component A is made up of the component of following weight part: recycle polyethylene 60 ~ 100 parts, polyethylene 20 ~ 40 parts, auxiliary agent 10 ~ 20 parts, colour batch 5 ~ 10 parts;
B component is made up of the component of following weight part: reclaim rubber powder 60 ~ 100 parts, 20 ~ 40 parts, rubber powder end, 3 ~ 5 parts, latex;
Component C is made up of the component of following weight part: inorganic powder 60 ~ 100 parts, bituminous material 20 ~ 40 parts.
2. modified asphalt mixture properties-correcting agent according to claim 1, is characterized in that: described recycle polyethylene refers to that density is less than 1g/cm
3recycle polyethylene, the particle diameter of described recycle polyethylene is less than or equal to 5mm;
Polyethylene (PE) refers at least one in Low Density Polyethylene (LDPE), medium-density polyethylene (MDPE), high density polyethylene(HDPE) (HDPE), LLDPE (LLDPE) or multiple mixing;
Auxiliary agent refers at least one in polyethylene wax (PE-WAX), chlorinatedpolyethylene (CPE), ethene-vinyl acetate copolymer (EVA), ethylenebisstearamide (EBS) or multiple mixing;
Colour batch refers to polyethylene color masterbatch.
3. modified asphalt mixture properties-correcting agent according to claim 1 and 2, is characterized in that:
Described recovery rubber powder refers to and reclaims tire glue powder, reclaims footwear rubber powders, reclaims at least one in scrap stock rubber powder or multiple mixing, and the fineness scope of described recovery tire glue powder is 30 ~ 80 orders;
Rubber powder end refers at least one in sbr powder (SBR), styrene-butadiene-styrene block copolymer (SBS) or multiple mixing;
Latex refers to natural rubber latex, styrene-butadiene latex, polychloroprene latex, at least one in butadiene acrylonitrile rubber Ruzhong or multiple mixing, and the latex solid content of described latex is more than or equal to 40%.
4. modified asphalt mixture properties-correcting agent according to claim 3, is characterized in that: described inorganic powder refers at least one in nano-calcium carbonate, nano-sized magnesium hydroxide, nano silicon, nano titanium oxide, talcum powder, kaolin, polynite, mica, flyash, carbon powder, wollastonite, diatomite, zeolite powder or multiple mixing; Described bituminous material refers at least one in petroleum pitch, building asphalt, lake pitch, rock asphalt or multiple mixing.
5. a preparation method for modified asphalt mixture properties-correcting agent, is characterized in that, comprises the following steps:
1] component A, B component, component C are joined in screw extrusion press according to weight ratio, through batch mixing, melting, extrude, tie rod, pelletizing operation be prepared into modified asphalt mixture modified grain; Weight ratio shared by component A, B component, component C is: component A 60 ~ 100 parts, B component 15 ~ 25 parts, component C 15 ~ 25 parts;
Wherein component A preparation method is:
First become to be less than or equal to the powder of 5mm by recycle polyethylene grinding or extruding pelletization;
According to weight part recycle polyethylene powder, polyethylene, auxiliary agent, colour batch mixed in mixer again and be component A, recycle polyethylene 0 ~ 100 part, polyethylene 20 ~ 40 parts, auxiliary agent 10 ~ 20 parts, colour batch 5 ~ 10 parts;
B component preparation method:
According to weight ratio, first recovery rubber powder is mixed with rubber powder end;
Latex is evenly sprayed onto composite grain surface with vaporific, and composite grain is dried and is B component, and wherein weight part is: reclaim rubber powder 60 ~ 100 parts, 20 ~ 40 parts, rubber powder end, 3 ~ 5 parts, latex;
Component C preparation method:
According to weight ratio, the inorganic powder of one-component is directly added and joins the Youth League in material machine; Or the inorganic powder of various ingredients first joined in mixer mix and again inorganic powder after mixing is joined in a material machine;
Pitch heat is melted to flow state, in the inorganic powder in the group's of being added drop-wise to material machine, rolls into a ball into small-particle and be component C; Wherein the weight part of component C is: inorganic powder 60 ~ 100 parts, bituminous material 20 ~ 40 parts;
2] as required, modified asphalt mixture modified grain is joined in crusher pulverize.
6. the preparation method of modified asphalt mixture properties-correcting agent according to claim 5, is characterized in that: described recycle polyethylene refers to that density is less than 1g/cm
3recycle polyethylene, the particle diameter of described recycle polyethylene is less than or equal to 5mm;
Polyethylene (PE) refers at least one in Low Density Polyethylene (LDPE), medium-density polyethylene (MDPE), high density polyethylene(HDPE) (HDPE), LLDPE (LLDPE) or multiple mixing;
Auxiliary agent refers at least one in polyethylene wax (PE-WAX), chlorinatedpolyethylene (CPE), ethene-vinyl acetate copolymer (EVA), ethylenebisstearamide (EBS) or multiple mixing;
Colour batch refers to polyethylene color masterbatch.
7. the preparation method of the modified asphalt mixture properties-correcting agent according to claim 5 or 6, it is characterized in that: described recovery rubber powder refers to and reclaims tire glue powder, reclaims footwear rubber powders, reclaims at least one in scrap stock rubber powder or multiple mixing, and the fineness scope of described recovery tire glue powder is 30 ~ 80 orders;
Rubber powder end refers at least one in sbr powder (SBR), styrene-butadiene-styrene block copolymer (SBS) or multiple mixing;
Latex refers to natural rubber latex, styrene-butadiene latex, polychloroprene latex, at least one in butadiene acrylonitrile rubber Ruzhong or multiple mixing, and the latex solid content of described latex is more than or equal to 40%.
8. the preparation method of modified asphalt mixture properties-correcting agent according to claim 7, is characterized in that: described inorganic powder refers at least one in nano-calcium carbonate, nano-sized magnesium hydroxide, nano silicon, nano titanium oxide, talcum powder, kaolin, polynite, mica, flyash, carbon powder, wollastonite, diatomite, zeolite powder or multiple mixing; Described bituminous material refers at least one in petroleum pitch, building asphalt, lake pitch, rock asphalt or multiple mixing.
9., based on the preparation method of the modified asphalt mixture of the modified asphalt mixture properties-correcting agent described in claim 1-4, it is characterized in that: comprise the following steps:
1] will gather materials and be heated to 175 ~ 185 DEG C, what according to design level proportioning example, gathering materials after heating is joined batching plant mixes in cylinder, artificial or batch charger adds modified asphalt mixture properties-correcting agent simultaneously, and the addition of modified asphalt mixture properties-correcting agent accounts for 0.4% ~ 1.0% of quality of asphalt mixtures; Described asphalt comprise gather materials, modified asphalt mixture properties-correcting agent and petroleum pitch;
2] mixed and stirred for 20 ~ 30 seconds, then add the petroleum pitch that temperature is 150 ~ 160 DEG C;
3] mixed and stirred for 10 ~ 20 seconds, then add breeze and mix and stir and can be prepared into modified asphalt mixture 10 ~ 20 seconds; Modified asphalt mixture drop temperature scope 160 ~ 180 DEG C.
10., based on the preparation method of the modified asphalt mixture of the modified asphalt mixture properties-correcting agent described in claim 1-4, it is characterized in that: comprise the following steps:
1] reclaimed asphalt mixture after fragmentation is heated to 180 ~ 190 DEG C, what according to design level proportioning example, the reclaimed asphalt mixture after heating is joined batching plant mixes in cylinder, artificial or batch charger adds modified asphalt mixture properties-correcting agent simultaneously, and the addition of modified asphalt mixture properties-correcting agent accounts for 0.4% ~ 1.0% of quality of asphalt mixtures; Described asphalt comprises reclaimed asphalt mixture, modified asphalt mixture properties-correcting agent and petroleum pitch;
2] mixed and stirred for 20 ~ 30 seconds, then add the petroleum pitch that temperature is 150 ~ 160 DEG C;
3] mixed and stirred for 10 ~ 20 seconds, add breeze and mix and stir and can be prepared into modification regeneration asphalt 10 ~ 20 seconds, modification regeneration asphalt drop temperature scope 165 ~ 185 DEG C.
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