CN103897411B - asphalt mixture anti-rutting additive and preparation method thereof - Google Patents
asphalt mixture anti-rutting additive and preparation method thereof Download PDFInfo
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Abstract
Disclosure one asphalt mixture anti-rutting additive, anti-rut agent raw material includes polyethylene, whisker, polymethyl methacrylate, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid, dilauryl thiodipropionate, natural rock asphalt by weight；The asphalt mixture anti-rutting additive of the present invention is while greatly improving road surface Rut resistance, cryogenic tensile and cracking resistance, can effective guarantee Colophonium, gather materials, cementation between anti-rut agent, make asphalt reach excellent overall performance, extend the bulk life time of pavement structure；Additionally, also have excellent anti-wear performance, can effectively ensure that the antiskid performance on road surface。
Description
Technical field
The present invention relates to ground surface material field, particularly to a kind of asphalt mixture anti-rutting additive of high-temperature stability and rutting resistance for improving surface layer asphalt and preparation method thereof。
Background technology
Asphalt pavement rut refers to the wheelmark place degree of depth longitudinal banding groove more than 10mm。According to " highway technology status assessment standard JTGH20-2007 ", by the degree of depth of rut groove, can being divided into light rut and two kinds of loaded vehicle rut, light rut rut groove is shallow, and the degree of depth is between 10～15mm；Loaded vehicle rut rut groove depth, more than degree of depth 15mm。Experience according to existing rut treatment in recent years, by the degree of depth of rut groove, can be divided into again slight rut, moderate rut, severe rut three kinds, and slight rutting depth, less than 10～15mm, is mainly densification type rut；Moderate rutting depth 15～35mm, mainly flow model rut；Severe rutting depth, more than 35mm, is mainly flow model rut and structural type rut。Form the reason of rut and mainly have that asphalt pavement structure combination is improper, asphalt mixture anti-rutting performance is bad, traffic and weather conditions etc.。The performance of asphalt is mainly asphalt material character, mineral aggregate characteristic, asphalt content and gradation types；Traffic and weather conditions are mainly the impact of traffic loading, longitudinal gradient impact and temperature；Construction quality is mainly compactness and the problem such as interlaminar bonding is bad。
Asphalt pavement rut control measure generally have three kinds: (1) pavement structure is improved: improve overall anti-rut behavior by the design of rational Pavement Structure Combination, as overlayed high-performance semi-flexible context layer, LSPM (LSPM), high-modulus asphalt concrete at middle cutting optimal or basic unit；(2) bituminous concrete Optimising aggregate gradation: designed by rational grating and bitumen aggregate ratio, Asphalt Mixture Design is become the mineral aggregate gradation of high anti-rut behavior；(3) material is preferred: select low grade Colophonium, hard grades of bitumen or modified pitch, adopts that surface microroughness is big, hard, shape is close to cube, corner angle are good and asphalt adhesion is strong coarse aggregate and Machine-made Sand simultaneously；(4) in asphalt, anti-rut agent etc. is added。Domestic and international existing anti-rut agent is of a great variety, volume and Rut resistance effect are also uneven, existing anti-rut agent is respectively provided with certain anti-rut behavior, but when heavy load, there is toughness deficiency, recoverable force ability, and the problem such as wear no resistance, the anti-rut behavior on road surface is not ideal enough。
Accordingly, it would be desirable to a kind of novel asphalt mixture anti-rutting additive, it is possible to increase the toughness of bituminous paving, improves recoverable force ability when heavy load, improves wearability and the weatherability on road surface, and then improve the rutting resistance of bituminous paving。
Summary of the invention
In view of this, it is an object of the invention to provide a kind of asphalt mixture anti-rutting additive and preparation method thereof, the toughness of bituminous paving can be improved, improve recoverable force ability when heavy load, improve wearability and the weatherability on road surface, and then the rutting resistance of raising bituminous paving, to extend the service life of bituminous paving and to improve degree of safety and the comfort level of driving。
The asphalt mixture anti-rutting additive of the present invention, anti-rut agent raw material includes following components by weight: polyethylene 55-65 part, whisker 25-35 part, polymethyl methacrylate 10-20 part, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) propanoic acid positive octadecanol ester 1-10 part, dilauryl thiodipropionate 1-10 part, natural rock asphalt 15-30 part；
Further, anti-rut agent raw material includes following components by weight: polyethylene 60 parts, whisker 30 parts, polymethyl methacrylate 15 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 5 parts, dilauryl thiodipropionate 5 parts, natural rock asphalt 20 parts；
Further, described whisker is one or more in carborundum whisker, silicon nitride crystal whisker, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, silicon whisker or magnesium salt whisker；
Further, described whisker carries out surface treatment through silane coupler；
Further, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 250-400 order；
Further, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000；
The preparation method that invention additionally discloses a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 170～200 DEG C, prepare asphalt mixture anti-rutting additive。
Beneficial effects of the present invention: asphalt mixture anti-rutting additive of the present invention and preparation method thereof, the diffusion mutually invaded is there is between Colophonium and high molecular polymer, asphaltene molecule is filled in the gap of polymer macromolecule, some chain link of polymer molecule diffuses in asphaltene molecule simultaneously, thus forming the netted mixed structure of cohesion。Anti-rut agent and asphalt can be dissolved in rapidly in Colophonium when mixing and stirring, the micro-crystallization district formed due to polymer in anti-rut agent has suitable stiffness, its part wire drawing in the process of mixing and stirring becomes plastic optical fibre, put up a bridge crosslinking in skeleton gathering materials and form fiber and steel bar reinforced effect. due to the existence of polymer fiber, it is formed netted in cementitious matter, strengthen asphalite arogel ramming material system to interact and globality, β-(3, 5-di-t-butyl-4-hydroxyphenylmethyl) the positive octadecanol ester of propanoic acid and dilauryl thiodipropionate Synergistic play aging resistance effect, aging resistance molecule is uniformly distributed in compound, extend the fatigue performance on road surface, endurance time limit 25-35% can be improved, reinforced action is played in toughener bridging crosslinking in compound, mechanical strength and elastic modelling quantity big (stretching) due to whisker, plus its fine structure, with big specific surface area ratio, there is fine wellability and good compound ability, formed after compound and go here and there network mutually, improve the elastic recovery capability of wear-resisting resistance to pressure and Colophonium, the softening point of Colophonium can be improved simultaneously, improve penetration of bitumens ratio, and then improve the high-temperature stability of asphalt, it is embodied in:
1. after, adding asphalt mixture anti-rutting additive, the penetration index of asphalt binder enlarges markedly, and softening point raises, and denseness increases, the dynamic stability of asphalt has great raising, it was shown that the high-temperature stability of asphalt binder and asphalt is greatly improved。
2., adding after asphalt mixture anti-rutting additive, bending tensile strength and flexural-tensile strain in the bending failure test of asphalt have increase by a relatively large margin, it was shown that the cryogenic property of asphalt binder and asphalt obtains bigger enhancing。
3., adding after asphalt mixture anti-rutting additive, the elastic recovery properties of asphalt binder increases to some extent, show that its denseness is constant by nomogram, and temperature is about 10 DEG C, is suitable for preventing and treating and produces temperature warm plastic forming below 10 DEG C。Therefore, for the area that road surface warm plastic forming occurrence temperature is relatively low, anti-rutting additive can play good effect。
4., asphalt mixture anti-rutting additive is a kind of additive of good performance, it is possible to the high temperature of road improvement, low temperature, water stabilizing and anti-fatigue performance effectively, especially high-temperature behavior aspect ratio is more prominent。
Detailed description of the invention
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 55-65 part, whisker 25-35 part, polymethyl methacrylate 10-20 part, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) propanoic acid positive octadecanol ester 1-10 part, dilauryl thiodipropionate 1-10 part, natural rock asphalt 15-30 part。
In the present embodiment, it is preferably, anti-rut agent raw material includes following components by weight: polyethylene 60 parts, whisker 30 parts, polymethyl methacrylate 15 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 5 parts, dilauryl thiodipropionate 5 parts, natural rock asphalt 20 parts。
In the present embodiment, described whisker is one or more in carborundum whisker, silicon nitride crystal whisker, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, silicon whisker or magnesium salt whisker。
In the present embodiment, it is preferred to described whisker carries out surface treatment through silane coupler；Improve the intermolecular compatibility。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 250-400 order。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 170～200 DEG C, prepare asphalt mixture anti-rutting additive。
Below by specific embodiment, the present invention is further elaborated。
Embodiment one
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 60 parts, whisker 30 parts, polymethyl methacrylate 15 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 5 parts, dilauryl thiodipropionate 5 parts, natural rock asphalt 20 parts。
In the present embodiment, described whisker is carborundum whisker, in the present embodiment, carborundum whisker is replaced with silicon nitride crystal whisker according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, one in silicon whisker or magnesium salt whisker, or carborundum whisker and silicon nitride crystal whisker is replaced with according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 300 orders。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
In the present embodiment, described whisker carries out surface treatment through silane coupler。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 180 DEG C, prepare asphalt mixture anti-rutting additive。
Embodiment two
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 55 parts, whisker 25 parts, polymethyl methacrylate 10 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 1 part, dilauryl thiodipropionate 1 part, natural rock asphalt 15 parts。
In the present embodiment, described whisker is silicon nitride crystal whisker, in the present embodiment, silicon nitride crystal whisker is replaced with carborundum whisker according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, one in silicon whisker or magnesium salt whisker, or replace with silicon nitride crystal whisker and carborundum whisker according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 250 orders。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 170 DEG C, prepare asphalt mixture anti-rutting additive。
Embodiment three
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 65 parts, whisker 35 parts, polymethyl methacrylate 20 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 10 parts, dilauryl thiodipropionate 10 parts, natural rock asphalt 30 parts。
In the present embodiment, described whisker is mullite crystal whisker, in the present embodiment, mullite crystal whisker is replaced with silicon nitride crystal whisker according to equivalent weight part, carborundum whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, one in silicon whisker or magnesium salt whisker, or mullite crystal whisker and silicon nitride crystal whisker is replaced with according to equivalent weight part, carborundum whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive。
In the present embodiment, described whisker carries out surface treatment through silane coupler。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 400 orders。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 200 DEG C, prepare asphalt mixture anti-rutting additive。
Embodiment four
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 55 parts, whisker 35 parts, polymethyl methacrylate 10 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 10 parts, dilauryl thiodipropionate 1 part, natural rock asphalt 30 parts。
In the present embodiment, described whisker is potassium titanate crystal whisker, in the present embodiment, potassium titanate crystal whisker is replaced with silicon nitride crystal whisker according to equivalent weight part, mullite crystal whisker, carborundum whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, one in silicon whisker or magnesium salt whisker, or potassium titanate crystal whisker and silicon nitride crystal whisker is replaced with according to equivalent weight part, mullite crystal whisker, carborundum whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 350 orders。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 190 DEG C, prepare asphalt mixture anti-rutting additive。
Embodiment five
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 65 parts, whisker 25 parts, polymethyl methacrylate 20 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 1 part, dilauryl thiodipropionate 10 parts, natural rock asphalt 15 parts。
In the present embodiment, described whisker is aluminium borate whisker, in the present embodiment, carborundum whisker is replaced with silicon nitride crystal whisker according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, carborundum whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, one in silicon whisker or magnesium salt whisker, or aluminium borate whisker and silicon nitride crystal whisker is replaced with according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, carborundum whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 280 orders。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 175 DEG C, prepare asphalt mixture anti-rutting additive。
Embodiment six
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 58 parts, whisker 28 parts, polymethyl methacrylate 18 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 2 parts, dilauryl thiodipropionate 2 parts, natural rock asphalt 18 parts。
In the present embodiment, described whisker is calcium carbonate crystal whisker, in the present embodiment, calcium carbonate crystal whisker is replaced with silicon nitride crystal whisker according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, carborundum whisker, one in silicon whisker or magnesium salt whisker, or calcium carbonate crystal whisker and silicon nitride crystal whisker is replaced with according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, carborundum whisker, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 300 orders。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 180 DEG C, prepare asphalt mixture anti-rutting additive。
Embodiment seven
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material includes following components by weight: polyethylene 62 parts, whisker 32 parts, polymethyl methacrylate 12 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 7 parts, dilauryl thiodipropionate 7 parts, natural rock asphalt 25 parts。
In the present embodiment, described whisker is calcium sulfate crystal whiskers, in the present embodiment, calcium sulfate crystal whiskers is replaced with silicon nitride crystal whisker according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, carborundum whisker, calcium carbonate crystal whisker, one in silicon whisker or magnesium salt whisker, or calcium sulfate crystal whiskers and silicon nitride crystal whisker is replaced with according to equivalent weight part, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, carborundum whisker, calcium carbonate crystal whisker, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive。
In the present embodiment, described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 280 orders。
In the present embodiment, the length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
The preparation method that the present embodiment is also disclosed a kind of asphalt mixture anti-rutting additive, comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 175 DEG C, prepare asphalt mixture anti-rutting additive。
In above-mentioned example, the molecular formula of β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid: C35H62O3；Dilauryl thiodipropionate molecular formula is C30H58O4S。
In above-described embodiment, the using dosage of obtained asphalt mixture anti-rutting additive is the 0.3～0.5% of asphalt, namely mixes 3～5KG in asphalt per ton。Then generally mix 0.35-0.4% for road, namely 3.5-4KG mixed by asphalt per ton。The volume of traffic is big, and many limitting with height of heavy vehicle, special road section can mix more than 0.6%；The dynamic stability of high temperature Rut resistance reaches 15000 times/more than mm, there is very strong adhesive property simultaneously, generally under 25000 to 35000Pa.s, low temperature, ductility reaches more than 40 to the dynamic viscosity (60 DEG C) of asphalt material, and fusing point and the elongation percentage of anti-rut agent are higher。
Construction technology:
Owing to anti-rut agent is graininess, additional use generally at the scene, therefore, it uses technique convenient and simple, is mixed and stirred in process by asphalt and is directly added into:
1. when mineral aggregate being heated to 170～180 DEG C, direct plungeing into additive to mix and stir and carry out dry mixing in pot, the mixing time can increase by 2～3 seconds。
2. adding heated bitumen and continue stirring, the mixing time can increase relatively。
3. the quality control of finished product compound and storage transport compound routinely carry out。
The cracking resistance ability of the rutting resistance in summer with winter can be improved 4 times by the asphalt mixture anti-rutting additive of the present invention。It is applicable to any asphalt mixing plant。Without changing any technical conditions and appointed condition, and cheap, mixing and easy construction。
1. after, adding asphalt mixture anti-rutting additive, the penetration index of asphalt binder enlarges markedly, and softening point raises, and denseness increases, the dynamic stability of asphalt has great raising, it was shown that the high-temperature stability of asphalt binder and asphalt is greatly improved。
2., adding after asphalt mixture anti-rutting additive, bending tensile strength and flexural-tensile strain in the bending failure test of asphalt have increase by a relatively large margin, it was shown that the cryogenic property of asphalt binder and asphalt obtains bigger enhancing。
3., adding after asphalt mixture anti-rutting additive, the elastic recovery properties of asphalt binder increases to some extent, show that its denseness is constant by nomogram, and temperature is about 10 DEG C, is suitable for preventing and treating and produces temperature warm plastic forming below 10 DEG C。Therefore, for the area that road surface warm plastic forming occurrence temperature is relatively low, anti-rutting additive can play good effect。
4., asphalt mixture anti-rutting additive is a kind of additive of good performance, it is possible to the high temperature of road improvement, low temperature, water stabilizing and anti-fatigue performance effectively, especially high-temperature behavior aspect ratio is more prominent。
Additionally, the asphalt mixture anti-rutting additive of the present invention is used for bituminous concrete and carries out bituminous concrete indoor wheel tracking test and bending tensile strength test, under same test conditions, the bituminous concrete rutting depth not adding asphalt mixture anti-rutting additive reaches 235mm, and the rutting depth having added the bituminous concrete after bituminous concrete anti-rutting additive only has 12mm。When carrying out the anti-bending test of bituminous concrete when-15 DEG C, the bituminous concrete test specimen after 1200 repeated-load tests not adding bituminous concrete anti-rutting additive ruptures；And added the bituminous concrete after bituminous concrete anti-rutting additive and still stood intact through 10000 Repeated Loadings, therefore the asphalt mixture anti-rutting additive of the present invention is equally applicable to bituminous concrete。
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention。
Claims (5)
1. an asphalt mixture anti-rutting additive, it is characterized in that: anti-rutting additive raw material includes following components by weight: polyethylene 55-65 part, whisker 25-35 part, polymethyl methacrylate 10-20 part, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) propanoic acid positive octadecanol ester 1-10 part, dilauryl thiodipropionate 1-10 part, natural rock asphalt 15-30 part；Described whisker carries out surface treatment through silane coupler；The length of described whisker is 20～2000 μm, diameter 0.5～20 μm, and draw ratio is 40～1000。
2. asphalt mixture anti-rutting additive according to claim 1, it is characterized in that: anti-rutting additive raw material includes following components by weight: polyethylene 60 parts, whisker 30 parts, polymethyl methacrylate 15 parts, β-(3,5-di-t-butyl-4-hydroxyphenylmethyl) positive octadecanol ester of propanoic acid 5 parts, dilauryl thiodipropionate 5 parts, natural rock asphalt 20 parts。
3. asphalt mixture anti-rutting additive according to claim 2, it is characterised in that: described whisker is one or more in carborundum whisker, silicon nitride crystal whisker, mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, silicon whisker or magnesium salt whisker。
4. asphalt mixture anti-rutting additive according to claim 3, it is characterised in that: described Colophonium is Qing Chuan kir, and the granularity of described Colophonium is 250-400 order。
5. the preparation method of the asphalt mixture anti-rutting additive described in a claim 1, it is characterized in that: comprise the following steps: by setting weight part, each component is sufficiently mixed after uniformly, join in double screw extruder, blending extrusion at the temperature of 170～200 DEG C, prepares asphalt mixture anti-rutting additive。
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| CN109852080A (en) * | 2018-12-19 | 2019-06-07 | 青岛科凯达橡塑有限公司 | A kind of anti-rutting asphalt modifier and its preparation method and application |
| CN112480697A (en) * | 2020-11-27 | 2021-03-12 | 江苏一诺路桥工程检测有限公司 | High-strength asphalt based on normal-temperature anti-rutting performance and preparation method thereof |
| CN114230226B (en) * | 2021-12-28 | 2023-02-10 | 南京兴佑交通科技有限公司 | High-density thin-layer asphalt pavement additive and preparation method thereof |
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| WO2010107134A1 (en) * | 2009-03-18 | 2010-09-23 | Taiyu Kensetsu Co., Ltd. | Asphalt modifier, asphalt composition, asphalt mixture, and methods for producing them |
| CN101704644A (en) * | 2009-11-06 | 2010-05-12 | 同济大学 | Anti-rut agent for asphalt pavements and preparation method thereof |
| CN101805470B (en) * | 2010-03-16 | 2011-11-16 | 中交第一公路勘察设计研究院有限公司 | Asphalt mixture anti-rutting additive and preparation and use method thereof |
| CN102585522B (en) * | 2011-12-20 | 2014-06-04 | 上海浦东路桥建设股份有限公司 | Direct-casting type anti-track agent and preparation method |
| CN102702600B (en) * | 2012-06-04 | 2014-04-30 | 深圳市科中大高分子材料研究所 | Environment-friendly asphalt pavement anti-rut agent and preparation method thereof |
| CN103059587B (en) * | 2012-12-14 | 2016-01-20 | 北京中交路通科技发展有限公司 | Bituminous pavement tracking-resisting modifier and the asphalt containing tracking-resisting modifier |
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2013
- 2013-12-16 CN CN201310700929.0A patent/CN103897411B/en not_active Expired - Fee Related
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