CN102964525A - Road asphalt mixture rut resisting additive and preparation method thereof - Google Patents
Road asphalt mixture rut resisting additive and preparation method thereof Download PDFInfo
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Abstract
Belonging to the technical field of road asphalt mixture additives, the invention relates to an asphalt mixture rut resisting agent and a preparation method thereof. A road asphalt mixture rut resisting additive is characterized in that it is prepared by: mixing the following raw materials, and conducting melt extrusion, grain cutting, as well as drying. The raw materials consist of, by weight: 100 parts of polyolefin, 3-30 parts of waste rubber powder, 0.5-2 parts of maleic anhydride, and 0.05-0.2 part of dicumyl peroxide. The additive prepared by the method can significantly improve the rut resistance of an asphalt mixture.
Description
Technical field
The invention belongs to road bitumen mixture additive technical field, relate to a kind of asphalt mixture anti-rutting agent and preparation method thereof.
Background technology
Along with the large flow of China's motorway, macro-axis carries and the canalized traffic characteristics show more and more outstandingly, bituminous pavement produces flow deformation and constantly accumulates the formation rut under the effect of high temperature and lasting load.Rut is one of several principal elements of Protective Measures of Bitumen Pavement Initial Damage.The appearance of asphalt pavement rut will have a strong impact on the service ability of pavement structure, not only directly have influence on planeness and the travel safety on road surface, and because wheelmark place brea bed reduced thickness, weakened the bulk strength of surface layer and pavement structure, will further bring out other diseases, affect using character and the work-ing life of bituminous pavement.Rut harm has become technical barrier of being badly in need of solution in the Road construction.
Generally, the asphalt pavement rut control all refers to the control of motive rut.In order to prevent and treat the generation of rut, need from exploitation rutting resistance strong asphalt and improvement construction technology two aspects.Preventative technical measures commonly used mainly contain following several at present: the high temperature viscosity of a, raising pitch, adopt asphaltum with high viscosity or various modifying asphalt; B, rationally adjust grating, adopt thicker mineral aggregate gradation; C, in compound various poly-cruel fiber, lignin fibre and mineral fibre of admixture etc.; The structural sheets such as d, employing high performance asphalt pavement (Superpave), stone mastic asphalt (SMA), large tar-mac (LSAM), Asphalt Stabilized Macadam compound (ATB).Mix various fibers outward or adopt the structures such as Superpave, SMA to use because cost increases substantially seldom, particularly be rarely used in middle surface layer.Some mechanisms and product man develop for the external additive that improves road bitumen mixture anti-rutting ability for the reason that the road surface produces rut both at home and abroad, and this additive directly is spiked in the asphalt in the road bitumen construction process, and constructional method is simple.
The anti-rut agent product mainly contains the PR PLASTS particle of French PR I company, the DUROFLEX particle of German Ba Saier group, SEAM particle of shell pitch company etc. on the present stage world market.The domestic RadSpunrie rut king anti-rut agent that mainly contains.The price of these anti-rut agents is expensive at present, and output is limited, can not satisfy domestic growing demand.The people such as the Xu Peihua of Xi'an Gaoyuan Highway Maintenance Technology Co., Ltd make track-resistant additive (China Patent Publication No. CN1887951A) with employing single screw extrusion machine blend such as polyethylene, petroleum pitch, diatomite, its patent specification shows: add 0.4%, the dynamic stability of road bitumen compound can reach 3000 times/more than the mm.The Central China University of Science and Technology separate the people such as filial piety woods also invented a kind of by mixing such as modified by maleic acid anhydride graft polyolefine, polyolefine, inorganic mineral stopping composition, rock asphalts by melt extruding the anti-rut agent (China Patent Publication No. CN101955335A) that makes, add this kind anti-rut agent of 0.4%, the dynamic stability of road bitumen compound can reach 11200 times/mm.The unit such as Int. of Highway Sciences, Ministry of Communications, Wuhan University of Technology also carried out the correlative study work of asphalt mixture anti-rutting agent.On the whole, China is less at this field matured product at present, and correlative study remains further deeply.
Summary of the invention
The purpose of this invention is to provide a kind of road bitumen mixture anti-rutting additive and preparation method thereof, the additive of the method preparation can significantly improve the anti-rut performance of asphalt.
For achieving the above object, the technical solution used in the present invention is: a kind of road bitumen mixture anti-rutting additive, after it is characterized in that it is by following raw material mixing, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight part of each raw material is: 100 parts of polyolefine, 3～30 parts of waste Crumb rubbers (preferred 5～15 parts), 0.5～2 part of maleic anhydride (MA), 0.05～0.2 part of dicumyl peroxide (DCP).
The shared weight part the best of above-mentioned each raw material is: 100 parts of polyolefine, 5～15 parts of waste Crumb rubbers, 0.5～2 part of maleic anhydride, 0.05～0.2 part of dicumyl peroxide.
Described polyolefine is new polyolefine and the compound of waste polyolefine, and the shared weight part of compound Raw is: 10～100 parts of new polyolefine (preferred 30～100 parts), 0～90 part of waste polyolefine (preferred 0～70 part).
Described polyolefine (new polyolefine, waste and old polyolefine) is one or more mixtures by any proportioning in polypropylene, high density polyethylene(HDPE), Low Density Polyethylene, the linear low density polyethylene.
Described waste Crumb rubber is common waste Crumb rubber modified asphalt waste tire rubber powder (being existing product), and the order number all can from 40 orders～80 orders.
The preparation method of above-mentioned a kind of road bitumen mixture anti-rutting additive is characterized in that it comprises the steps:
1) by the shared weight part of each raw material be: 100 parts of polyolefine, 3～30 parts of waste Crumb rubbers, 0.5～2 part of maleic anhydride, 0.05～0.2 part of dicumyl peroxide is chosen polyolefine, waste Crumb rubber, maleic anhydride and dicumyl peroxide, and is for subsequent use;
2) polyolefine, waste Crumb rubber, maleic anhydride and dicumyl peroxide are mixed at normal temperatures after, join in the screw extrusion press, under 160～230 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, dry (normal temperature forced air drying 5-15min) obtains the road bitumen mixture anti-rutting additive.
With road bitumen mixture anti-rutting additive provided by the invention and pitch, gather materials and mineral aggregate, AC-13 type grating in the employing " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004), by " highway engineering pitch and Asphalt Mixture Experiment rules " (JTJ052-2000) (T0703-1993) standard of " the bitumen mixture specimen making method " in the standard, the preparation bitumen mixture specimen, the addition of road bitumen mixture anti-rutting additive of the present invention is 0.3% (accounting for the mass fraction of asphalt), and bitumen aggregate ratio is 5.3%.Bitumen mixture specimen is according to " highway engineering pitch and Asphalt Mixture Experiment rules " (JTJ052-2000) (T0719-1993) standard of " asphalt mixture in track test " in the standard, carry out dynamic stability and measure, weigh the anti-rut performance of above-mentioned bitumen mixture specimen.
The mechanism of action of anti-rut agent of the present invention is: said mixture is by the graft reaction of consolute generation polymkeric substance and maleic anhydride, obtain part modified by maleic acid anhydride graft polyolefine, its blend tensile strength and shock strength are improved, the adding of waste Crumb rubber has further improved the visco-elasticity of mixture, and the anti-aging composition in the waste Crumb rubber has increased the ageing-resistant performance of anti-rut agent.In the mix process, the micro-crystallization district of the polymer formation in the anti-rut agent has suitable stiffness, and the part wire drawing becomes plastic optical fibre, puts up a bridge crosslinked in the skeleton that gathers materials and forms fiber and steel bar reinforced effect; Anti-rut agent softens in construction temporarily, be dispersed in and gather materials, moulding in the process of rolling, the fine aggregate that is equivalent to have high-adhesiveness has been filled the space in the skeleton that gathers materials, and has increased the skeleton function of asphalt structure, has reduced simultaneously the perviousness on moulding road surface; Anti-rut agent Elastic composition has the function of the crushed element recovery of elasticity that makes the road surface when comparatively high temps, reduced the tension set of moulding bituminous pavement.
The invention has the beneficial effects as follows: by a large amount of experiments, the road bitumen mixture anti-rutting additive of preparation different ratios of raw materials, the optimization experiment condition, dynamic stability result to bitumen mixture specimen investigates, and experimental result shows that road bitumen mixture anti-rutting additive provided by the invention can significantly improve the anti-rut performance of asphalt.Prepare the cost that the road bitumen mixture anti-rutting additive greatly reduces anti-rut and agent by adding waste polyolefine and waste Crumb rubber.
Specific implementation method
For a better understanding of the present invention, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
New polyethylene (granular) 100kg,
Waste Crumb rubber 10kg,
Maleic anhydride 1.2kg,
Dicumyl peroxide 0.12kg.
Its preparation method is: by said ratio polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 160～190 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, dry (normal temperature forced air drying 5-15min) obtains the long road bitumen mixture anti-rutting additive (product of the present invention) of 2～5mm.
Polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are existing raw material.
Road bitumen mixture anti-rutting additive and pitch that the embodiment of the invention is provided, gather materials and mineral aggregate, AC-13 type grating in the employing " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40-2004), by " highway engineering pitch and Asphalt Mixture Experiment rules " (JTJ052-2000) (T0703-1993) standard of " the bitumen mixture specimen making method " in the standard, the preparation bitumen mixture specimen, the addition of road bitumen mixture anti-rutting additive of the present invention is 0.3% (accounting for the mass fraction of asphalt), and bitumen aggregate ratio is 5.3%.Bitumen mixture specimen is according to " highway engineering pitch and Asphalt Mixture Experiment rules " (JTJ052-2000) (T0719-1993) standard of " asphalt mixture in track test " in the standard, carry out dynamic stability and measure, weigh the anti-rut performance of above-mentioned bitumen mixture specimen.Anti-rut performance sees Table 1, and following examples are identical.
Embodiment 2:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (granular) 65kg,
Waste and old Low Density Polyethylene (granular) 35kg,
Waste Crumb rubber 10kg,
Maleic anhydride 0.5kg,
Dicumyl peroxide 0.05kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 180～210 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, drying (normal temperature forced air drying 5-15min), obtain the long product of the present invention of 2～5mm.
Embodiment 3:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (granular) 65kg,
Waste and old Low Density Polyethylene (granular) 35kg,
Waste Crumb rubber 10kg,
Maleic anhydride 2.0kg,
Dicumyl peroxide 0.2kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 180～210 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, drying (normal temperature forced air drying 5-15min), obtain the long product of the present invention of 2～5mm.
Embodiment 4:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (granular) 70kg,
Waste and old Low Density Polyethylene (granular) 30kg,
Waste Crumb rubber 15kg,
Maleic anhydride 1.5kg,
Dicumyl peroxide 0.15kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 180～210 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, drying (normal temperature forced air drying 5-15min), obtain the long product of the present invention of 2～5mm.
Embodiment 5:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (powdery) 70kg,
Waste and old Low Density Polyethylene (granular) 30kg,
Waste Crumb rubber 15kg,
Maleic anhydride 1.5kg,
Dicumyl peroxide 0.15kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 190～220 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, drying (normal temperature forced air drying 5-15min), obtain the long product of the present invention of 2～5mm.
Embodiment 6:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (granular) 75kg,
Waste and old high density polyethylene(HDPE) (granular) 25kg,
Waste Crumb rubber 5kg,
Maleic anhydride 1.2kg,
Dicumyl peroxide 0.12kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 170～200 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, drying (normal temperature forced air drying 5-15min), obtain the long product of the present invention of 2～5mm.
Embodiment 7:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (powdery) 75kg,
Waste and old high density polyethylene(HDPE) (granular) 25kg,
Waste Crumb rubber 5kg,
Maleic anhydride 1.2kg,
Dicumyl peroxide 0.12kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 170～200 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, drying (normal temperature forced air drying 5-15min), obtain the long product of the present invention of 2～5mm.
Embodiment 8:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Linear low density polyethylene (granular) 50kg,
Waste and old high density polyethylene(HDPE) (granular) 50kg,
Waste Crumb rubber 10kg,
Maleic anhydride 1kg,
Dicumyl peroxide 0.1kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 180～210 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, dry (normal temperature forced air drying 5-15min) obtains the long product of the present invention of 2～5mm.
Embodiment 9:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (granular) 30kg,
Waste and old Low Density Polyethylene (granular) 70kg,
Waste Crumb rubber 5kg,
Maleic anhydride 1kg,
Dicumyl peroxide 0.1kg.
Its preparation method is: by said ratio polyethylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 190～220 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, dry (normal temperature forced air drying 5-15min) obtains the long product of the present invention of 2～5mm.
Embodiment 10:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (granular) 50kg,
Polypropylene (granular) 25kg,
Waste and old Low Density Polyethylene (granular) 25kg,
Waste Crumb rubber 5kg,
Maleic anhydride 1.2kg,
Dicumyl peroxide 0.12kg.
Its preparation method is: by said ratio polyethylene, polypropylene, waste polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 190～220 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, dry (normal temperature forced air drying 5-15min) obtains the long product of the present invention of 2～5mm.
Embodiment 11:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
Low Density Polyethylene (granular) 10kg,
Waste and old Low Density Polyethylene (granular) 90kg,
Waste Crumb rubber 3kg,
Maleic anhydride 1.2kg,
Dicumyl peroxide 0.12kg.
Its preparation method is: by said ratio Low Density Polyethylene, waste and old Low Density Polyethylene, waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 210～230 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, dry (normal temperature forced air drying 5-15min) obtains the long product of the present invention of 2～5mm.
Embodiment 12:
A kind of road bitumen mixture anti-rutting additive, after it is mixed by following raw material, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight of each raw material is:
High density polyethylene(HDPE) (granular) 60kg,
Polypropylene (granular) 20kg,
Waste and old high density polyethylene(HDPE) (granular) 20kg,
Waste Crumb rubber 30kg,
Maleic anhydride 2kg,
Dicumyl peroxide 0.2kg.
Its preparation method is: by said ratio high density polyethylene(HDPE), polypropylene, waste and old high density polyethylene(HDPE), waste Crumb rubber, maleic anhydride, dicumyl peroxide are at room temperature evenly mixed, compound joins in the twin screw extruder, under 200～230 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, dry (normal temperature forced air drying 5-15min) obtains the long product of the present invention of 2～5mm.
Data in the table 1 are parts by weight of raw materials and the compound dynamic stability test result of the described road bitumen mixture anti-rutting additive of embodiment of the invention 1-12 (or speaking approvingly of road asphalt mixture anti-rutting agent).The addition of anti-rut agent is 0.3% (accounting for the mass fraction of asphalt), and bitumen aggregate ratio is 5.3%.For investigating the agent of road bitumen mixture anti-rutting to the impact of bitumen mixture specimen dynamic stability, prepared the bitumen mixture specimen contrast sample that does not add the agent of road bitumen mixture anti-rutting, and the dynamic stability that records the contrast sample is 1500 times/mm.The contrast sample is not except adding the agent of road bitumen mixture anti-rutting, and its preparation method is all identical with the bitumen mixture specimen that adds the agent of road bitumen mixture anti-rutting with dynamic stability detection method and the condition of condition, test specimen.
Table 1: road bitumen mixture anti-rutting additive ingredients weight parts is on the impact of compound dynamic stability
Can be with finding out from table 1, the dynamic stability that does not add the heavy traffic paving asphalt compound of road bitumen mixture anti-rutting agent only is 1500 times/mm, the dynamic stability of common SBS modified asphalt mixture also only has 3500 times/mm, and after having added road bitumen mixture anti-rutting of the present invention agent, the dynamic stability of asphalt can reach 10500 times/mm, and the anti-rut performance of compound obviously improves.Each group experiment of contrast moving stablized data and can find out that the add-on of polyolefinic kind and component proportion, maleic anhydride, barrel temperature etc. are larger to the asphalt mixture anti-rutting performance impact in the asphalt mixture anti-rutting agent component.
Each raw material that the present invention is cited, and the bound of each raw material of the present invention, interval value, and the bound of processing parameter (such as temperature, time etc.), interval value can both realize the present invention, do not enumerate one by one embodiment at this.
Claims (7)
1. road bitumen mixture anti-rutting additive, after it is characterized in that it is by following raw material mixing, by melt extrude, pelletizing, drying be prepared from, raw material forms and the shared weight part of each raw material is: 100 parts of polyolefine, 3～30 parts of waste Crumb rubbers, 0.5～2 part of maleic anhydride, 0.05～0.2 part of dicumyl peroxide.
2. a kind of road bitumen mixture anti-rutting additive according to claim 1, it is characterized in that: the shared weight part of each raw material is: 100 parts of polyolefine, 5～15 parts of waste Crumb rubbers, 0.5～2 part of maleic anhydride, 0.05～0.2 part of dicumyl peroxide.
3. a kind of road bitumen mixture anti-rutting additive according to claim 1 and 2, it is characterized in that: described polyolefine is new polyolefine and the compound of waste polyolefine, the shared weight part of compound Raw is: 10～100 parts of new polyolefine, 0～90 part of waste polyolefine.
4. a kind of road bitumen mixture anti-rutting additive according to claim 3, it is characterized in that: the shared weight part of compound Raw is: 30～100 parts of new polyolefine, 0～70 part of waste polyolefine.
5. a kind of road bitumen mixture anti-rutting additive according to claim 1, it is characterized in that: described polyolefine is one or more mixtures by any proportioning in polypropylene, high density polyethylene(HDPE), Low Density Polyethylene, the linear low density polyethylene.
6. a kind of road bitumen mixture anti-rutting additive according to claim 1, it is characterized in that: the order number of described waste Crumb rubber is 40 orders～80 orders.
7. a method for preparing road bitumen mixture anti-rutting additive as claimed in claim 1 is characterized in that it comprises the steps:
1) by the shared weight part of each raw material be: 100 parts of polyolefine, 3～30 parts of waste Crumb rubbers, 0.5～2 part of maleic anhydride, 0.05～0.2 part of dicumyl peroxide is chosen polyolefine, waste Crumb rubber, maleic anhydride and dicumyl peroxide, and is for subsequent use;
2) polyolefine, waste Crumb rubber, maleic anhydride and dicumyl peroxide are mixed at normal temperatures after, join in the screw extrusion press, under 160～230 ℃ of barrel temperatures, 30～50 rev/mins of engine speeds, 30～60 rev/mins of feed rate, melt extrude, pelletizing, drying obtains the road bitumen mixture anti-rutting additive.
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| CN104016612A (en) * | 2014-06-05 | 2014-09-03 | 山西省交通科学研究院 | Method for preparing asphalt concrete anti-cracking agent by blending, grafting and modifying |
| CN104193229A (en) * | 2014-08-26 | 2014-12-10 | 南京东道路桥工程技术咨询有限公司 | Anti-rut agent, gap-gradation rubber asphalt mixture and preparation method thereof |
| CN104559257A (en) * | 2015-01-07 | 2015-04-29 | 山西省交通科学研究院 | A kind of high modulus asphalt particle and preparation method thereof for road construction |
| CN108559161A (en) * | 2018-05-15 | 2018-09-21 | 王波 | High-modulus additive for asphalt concrete |
| CN110643189A (en) * | 2019-10-15 | 2020-01-03 | 中交一公局集团有限公司 | A kind of warm mix type high modulus asphalt mixture additive and preparation method thereof |
| CN114921011A (en) * | 2022-04-16 | 2022-08-19 | 辽宁新远复合材料有限公司 | High-performance asphalt concrete anti-rutting agent and preparation and use method thereof |
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Application publication date: 20130313 |