CN103897411A - Anti-rutting additive of asphalt mixture and preparation method of anti-rutting additive - Google Patents
Anti-rutting additive of asphalt mixture and preparation method of anti-rutting additive Download PDFInfo
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Abstract
The invention discloses an anti-rutting additive of an asphalt mixture. The anti-rutting additive is prepared from the following raw materials in parts by weight: polyethylene, crystal whiskers, polymethyl methacrylate, beta-(3,5-di-tert-butyl-4-hydroxybenzyl) n-octadecanol propionate, dilauryl thiodipropionate and rock asphalt; the anti-rutting additive of the asphalt mixture is capable of effectively guaranteeing the cementing actionamong the asphalt, an aggregate and the anti-rutting additive while greatly improving the anti-rutting, low-temperature tensile and anti-cracking properties of a pavement, and therefore, the asphalt mixture has excellent overall performance and the overall service life of the pavement structure is increased; in addition, the anti-rutting additive has excellent wear resistance and thus is capable of effectively guaranteeing the anti-slide performance of the pavement.
Description
Technical field
The present invention relates to ground surface material field, particularly a kind of for improving the high-temperature stability of surface layer asphalt and asphalt mixture anti-rutting additive of rutting resistance and preparation method thereof.
Background technology
Asphalt pavement rut refers to that the wheelmark place degree of depth is greater than the longitudinal banded groove of 10mm.According to " highway technology situation evaluation criteria JTG H20-2007 ", by the degree of depth of rut groove, can be divided into two kinds, light rut and 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.According to the experience of existing rut treatment in recent years, by the degree of depth of rut groove, can be divided into again three kinds of slight ruts, moderate rut, severe rut, the slight rut degree of depth is less than 10～15mm, is mainly densification type rut; The moderate rut degree of depth 15～35mm is mainly flow model rut; The severe rut degree of depth is greater than 35mm, is mainly flow model rut and structure-type rut.Form that the reason of rut mainly contains that asphalt pavement structure combination is improper, asphalt mixture anti-rutting performance is bad, traffic and weather condition etc.The performance of asphalt is mainly bituminous material character, mineral aggregate characteristic, asphalt content and grating type; Traffic and weather condition are mainly the impacts of traffic loading, longitudinal gradient impact and temperature; Construction quality is mainly the problems such as compactness and interlaminar bonding be bad.
Asphalt pavement rut measure of control generally have three kinds: (1) pavement structure improvement: improve overall anti-rut performance by rational Pavement Structure Combination design, as in lower surface layer or basic unit overlay the flexible context layer of high-performance half, LSPM (LSPM), high-modulus asphalt concrete; (2) bituminous concrete mineral aggregate gradation is optimized: by rational grating and bitumen aggregate ratio design, Asphalt Mixture Design is become to the mineral aggregate gradation of high resistance rut performance; (3) material is preferred: select low grade pitch, hard pitch or modifying asphalt, adopt that surface microroughness is large, hard, shape approaches cubes, corner angle are good, coarse aggregate and the Machine-made Sand strong with asphalt adhesion simultaneously; (4) in asphalt, add anti-rut agent etc.Domestic and international existing anti-rut agent is of a great variety, volume and anti-rut effect are also uneven, existing anti-rut agent all has certain anti-rut performance, but under heavy lift condition, there is toughness deficiency, distortion restorability is poor, and the problem such as wear no resistance, and the anti-rut performance on road surface is not ideal enough.
Therefore, need a kind of novel asphalt mixture anti-rutting additive, can improve the toughness of bituminous pavement, improve the distortion restorability under heavy lift condition, improve wear resistance and the weathering resistance on road surface, and then improve the rutting resistance of bituminous pavement.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of asphalt mixture anti-rutting additive and preparation method thereof, can improve the toughness of bituminous pavement, improve the distortion restorability under heavy lift condition, improve wear resistance and the weathering resistance on road surface, and then the rutting resistance of raising bituminous pavement, to extend the work-ing life of bituminous pavement and to improve degree of safety and the comfort level of driving.
Asphalt mixture anti-rutting additive of the present invention, anti-rut agent raw material comprises following component by weight: polyethylene 55-65 part, whisker 25-35 part, polymethylmethacrylate 10-20 part, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) the positive octadecanol ester of propionic acid 1-10 part, Tyox B 1-10 part, natural rock asphalt 15-30 part;
Further, anti-rut agent raw material comprises following component by weight: 60 parts of polyethylene, 30 parts of whiskers, 15 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 5 parts of positive octadecanol esters of propionic acid, 5 parts of Tyox Bs, 20 parts of natural rock asphalts;
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 coupling agent;
Further, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 250-400 order;
Further, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000;
The present invention also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 170～200 DEG C, makes asphalt mixture anti-rutting additive.
Beneficial effect of the present invention: asphalt mixture anti-rutting additive of the present invention and preparation method thereof, between pitch and high molecular polymer, there is the diffusion of mutually invading, asphaltene molecule is filled in the gap of polymer macromolecule, some chain link of polymer molecule diffuses in asphaltene molecule simultaneously, thereby forms the netted mixed structure of cohesion.When mixing and stirring, anti-rut agent and asphalt can be dissolved in rapidly in pitch, because the micro-crystallization district of polymer formation 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 crosslinked and form fiber and steel bar reinforced effect gathering materials in skeleton. due to the existence of polymer fiber, it forms netted in agglutinate, having strengthened asphalite arogel ramming material system interacts and globality, β-(3, 5-di-t-butyl-4-hydroxybenzene methyl) the positive octadecanol ester of propionic acid and Tyox B synergy play anti-aging effect, anti-aging molecule is uniformly distributed in compound, extend the fatigue performance on road surface, can improve antifatigue time limit 25-35%, toughner is put up a bridge to be cross-linked and is played reinforced action in compound, due to physical strength and the Young's modulus large (stretching) of whisker, add its microtexture, with large specific surface area ratio, there is fine wetting property and good compound ability, network is gone here and there in compound rear formation mutually, improve the elastic recovery capability of wear-resisting resistance to pressure and pitch, can improve the softening temperature of pitch simultaneously, improve penetration of bitumens ratio, and then the high-temperature stability of raising asphalt, be embodied in:
1., add after asphalt mixture anti-rutting additive, the penetrative index of asphaltic binder enlarges markedly, and softening temperature raises, and denseness increases, the dynamic stability of asphalt has great raising, shows that the high-temperature stability of asphaltic binder and asphalt is greatly improved.
2., add after asphalt mixture anti-rutting additive, bending tensile strength and flexural-tensile strain in the flexural failure of asphalt test have increase by a relatively large margin, show that the low-temperature performance of asphaltic binder and asphalt obtains larger enhancing.
3., add after asphalt mixture anti-rutting additive, the elastic recovery properties of asphaltic binder increases to some extent, show that by nomogram its denseness is constant, temperature is 10 DEG C of left and right, is suitable for control and produces the warm draw of temperature 10 DEG C below and stitch.Therefore,, for the road surface temperature draw seam lower area of occurrence temperature, anti-rutting additive can play good effect.
4., asphalt mixture anti-rutting additive is a kind of well behaved additive, the high temperature of road improvement, low temperature, water stability energy and anti-fatigue performance effectively, especially high-temperature behavior aspect is more outstanding.
Embodiment
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: polyethylene 55-65 part, whisker 25-35 part, polymethylmethacrylate 10-20 part, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) the positive octadecanol ester of propionic acid 1-10 part, Tyox B 1-10 part, natural rock asphalt 15-30 part.
In the present embodiment, be preferably, anti-rut agent raw material comprises following component by weight: 60 parts of polyethylene, 30 parts of whiskers, 15 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 5 parts of positive octadecanol esters of propionic acid, 5 parts of Tyox Bs, 20 parts of natural rock asphalts.
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, be preferably described whisker and carry out surface treatment through silane coupling agent; Improve intermolecular consistency.
In the present embodiment, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 250-400 order.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 170～200 DEG C, makes asphalt mixture anti-rutting additive.
Below by specific embodiment, the present invention is further elaborated.
Embodiment mono-
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: 60 parts of polyethylene, 30 parts of whiskers, 15 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 5 parts of positive octadecanol esters of propionic acid, 5 parts of Tyox Bs, 20 parts of natural rock asphalts.
In the present embodiment, described whisker is carborundum whisker, in the present embodiment, carborundum whisker is replaced with to 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 replace with carborundum whisker and 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, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive.
In the present embodiment, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 300 orders.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
In the present embodiment, described whisker carries out surface treatment through silane coupling agent.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 180 DEG C, makes asphalt mixture anti-rutting additive.
Embodiment bis-
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: 55 parts of polyethylene, 25 parts of whiskers, 10 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 1 part of positive octadecanol ester of propionic acid, 1 part of Tyox B, 15 parts of natural rock asphalts.
In the present embodiment, described whisker is silicon nitride crystal whisker, in the present embodiment, silicon nitride crystal whisker is replaced with to 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 pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 250 orders.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 170 DEG C, makes asphalt mixture anti-rutting additive.
Embodiment tri-
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: 65 parts of polyethylene, 35 parts of whiskers, 20 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 10 parts of positive octadecanol esters of propionic acid, 10 parts of Tyox Bs, 30 parts of natural rock asphalts.
In the present embodiment, described whisker is mullite crystal whisker, in the present embodiment, mullite crystal whisker is replaced with to 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 replace with mullite crystal whisker and 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, 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 coupling agent.
In the present embodiment, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 400 orders.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 200 DEG C, makes asphalt mixture anti-rutting additive.
Embodiment tetra-
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: 55 parts of polyethylene, 35 parts of whiskers, 10 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 10 parts of positive octadecanol esters of propionic acid, 1 part of Tyox B, 30 parts of natural rock asphalts.
In the present embodiment, described whisker is potassium titanate crystal whisker, in the present embodiment, potassium titanate crystal whisker is replaced with to 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 replace with potassium titanate crystal whisker and 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, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive.
In the present embodiment, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 350 orders.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 190 DEG C, makes asphalt mixture anti-rutting additive.
Embodiment five
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: 65 parts of polyethylene, 25 parts of whiskers, 20 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 1 part of positive octadecanol ester of propionic acid, 10 parts of Tyox Bs, 15 parts of natural rock asphalts.
In the present embodiment, described whisker is aluminium borate whisker, in the present embodiment, carborundum whisker is replaced with to 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 replace with aluminium borate whisker and 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, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive.
In the present embodiment, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 280 orders.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 175 DEG C, makes asphalt mixture anti-rutting additive.
Embodiment six
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: 58 parts of polyethylene, 28 parts of whiskers, 18 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 2 parts of positive octadecanol esters of propionic acid, 2 parts of Tyox Bs, 18 parts of natural rock asphalts.
In the present embodiment, described whisker is calcium carbonate crystal whisker, in the present embodiment, calcium carbonate crystal whisker is replaced with to 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 replace with calcium carbonate crystal whisker and 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, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive.
In the present embodiment, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 300 orders.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 180 DEG C, makes asphalt mixture anti-rutting additive.
Embodiment seven
The asphalt mixture anti-rutting additive of the present embodiment, anti-rut agent raw material comprises following component by weight: 62 parts of polyethylene, 32 parts of whiskers, 12 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 7 parts of positive octadecanol esters of propionic acid, 7 parts of Tyox Bs, 25 parts of natural rock asphalts.
In the present embodiment, described whisker is calcium sulfate crystal whiskers, in the present embodiment, calcium sulfate crystal whiskers is replaced with to 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 replace with calcium sulfate crystal whiskers and 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, the mixture of silicon whisker or magnesium salt whisker, all qualified asphalt mixture anti-rutting additive.
In the present embodiment, described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 280 orders.
In the present embodiment, the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
The present embodiment also discloses a kind of preparation method of asphalt mixture anti-rutting additive, comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 175 DEG C, makes asphalt mixture anti-rutting additive.
In above-mentioned example, the molecular formula of β-(3,5-di-t-butyl-4-hydroxybenzene methyl) positive octadecanol ester of propionic acid: C
35h
62o
3; Tyox B molecular formula is C
30h
58o
4s.
In above-described embodiment, the using dosage of prepared asphalt mixture anti-rutting additive is asphalt 0.3～0.5%, in asphalt per ton, mixes 3～5KG.Generally mix 0.35-0.4% for road, in asphalt per ton, mix 3.5-4KG.The volume of traffic is large, and what heavy vehicle was many limits with high, and special road section can be mixed more than 0.6%; The dynamic stability of the anti-rut of high temperature reach 15000 times/more than mm, there is very strong adhesive property simultaneously, the kinetic viscosity (60 DEG C) of bituminous material conventionally 25000 to 35000Pa.s, under low temperature, ductility reaches more than 40, fusing point and the unit elongation of anti-rut agent are higher.
Construction technology:
Because anti-rut agent is particulate state, additional use at the scene conventionally, therefore, its operation is convenient and simple, is mixed and stirred in process and is directly added by asphalt:
1. while mineral aggregate being heated to 170～180 DEG C, additive directly being dropped into mix and stir in pot and carry out dry mixing, the mixing time can increase by 2～3 seconds.
2. add heated bitumen to continue to stir, the mixing time can increase relatively.
3. the quality control of finished product compound and storage transport compound routinely carry out.
Asphalt mixture anti-rutting additive of the present invention can improve 4 times by the cracking resistance ability in the rutting resistance in summer and winter.It is applicable to any asphalt mixing plant.Without changing any technical qualification and appointed condition, and cheap, mixing and easy construction.
1., add after asphalt mixture anti-rutting additive, the penetrative index of asphaltic binder enlarges markedly, and softening temperature raises, and denseness increases, the dynamic stability of asphalt has great raising, shows that the high-temperature stability of asphaltic binder and asphalt is greatly improved.
2., add after asphalt mixture anti-rutting additive, bending tensile strength and flexural-tensile strain in the flexural failure of asphalt test have increase by a relatively large margin, show that the low-temperature performance of asphaltic binder and asphalt obtains larger enhancing.
3., add after asphalt mixture anti-rutting additive, the elastic recovery properties of asphaltic binder increases to some extent, show that by nomogram its denseness is constant, temperature is 10 DEG C of left and right, is suitable for control and produces the warm draw of temperature 10 DEG C below and stitch.Therefore,, for the road surface temperature draw seam lower area of occurrence temperature, anti-rutting additive can play good effect.
4., asphalt mixture anti-rutting additive is a kind of well behaved additive, the high temperature of road improvement, low temperature, water stability energy and anti-fatigue performance effectively, especially high-temperature behavior aspect is more outstanding.
In addition, asphalt mixture anti-rutting additive of the present invention is carried out to the indoor wheel tracking test of bituminous concrete and bending tensile strength test for bituminous concrete, under same test conditions, the bituminous concrete rut degree of depth that does not add asphalt mixture anti-rutting additive reaches 235mm, and the rut degree of depth that has added the bituminous concrete after bituminous concrete anti-rutting additive only has 12mm.Carry out the anti-bending test of bituminous concrete in the time of-15 DEG C time, the bituminous concrete test specimen after 1200 repeated-load tests that does not add bituminous concrete anti-rutting additive ruptures; And the bituminous concrete having added after bituminous concrete anti-rutting additive still stands intact through 10000 Repeated Loadings, therefore asphalt mixture anti-rutting additive of the present invention is equally applicable to bituminous concrete.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. an asphalt mixture anti-rutting additive, it is characterized in that: anti-rutting additive raw material comprises following component by weight: polyethylene 55-65 part, whisker 25-35 part, polymethylmethacrylate 10-20 part, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) the positive octadecanol ester of propionic acid 1-10 part, Tyox B 1-10 part, natural rock asphalt 15-30 part.
2. asphalt mixture anti-rutting additive according to claim 1, it is characterized in that: anti-rut agent raw material comprises following component by weight: 60 parts of polyethylene, 30 parts of whiskers, 15 parts of polymethylmethacrylates, β-(3,5-di-t-butyl-4-hydroxybenzene methyl) 5 parts of positive octadecanol esters of propionic acid, 5 parts of Tyox Bs, 20 parts of natural rock asphalts.
3. asphalt mixture anti-rutting additive according to claim 2, is characterized 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, is characterized in that: described whisker carries out surface treatment through silane coupling agent.
5. asphalt mixture anti-rutting additive according to claim 4, is characterized in that: the length of described whisker is 20～2000 μ m, diameter 0.5～20 μ m, and length-to-diameter ratio is 40～1000.
6. asphalt mixture anti-rutting additive according to claim 5, is characterized in that: described pitch is Qing Chuan rock asphalt, and the granularity of described pitch is 250-400 order.
7. a profit requires the preparation method of the asphalt mixture anti-rutting additive described in 1, it is characterized in that: comprise the following steps: after by setting weight part, each component fully being mixed, join in twin screw extruder, blending extrusion at the temperature of 170～200 DEG C, makes asphalt mixture anti-rutting additive.
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Cited By (4)
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| CN106010256A (en) * | 2016-07-13 | 2016-10-12 | 袁春华 | Preparing method of epoxy asphalt cement |
| 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 |
| CN114230226A (en) * | 2021-12-28 | 2022-03-25 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106010256A (en) * | 2016-07-13 | 2016-10-12 | 袁春华 | Preparing method of epoxy asphalt cement |
| 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 |
| CN114230226A (en) * | 2021-12-28 | 2022-03-25 | 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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| Publication number | Publication date |
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| CN103897411B (en) | 2016-06-22 |
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