CN101173070A - Powdered asphalt mixture track-resistant additive and method for producing the same - Google Patents
Powdered asphalt mixture track-resistant additive and method for producing the same Download PDFInfo
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- CN101173070A CN101173070A CNA2007100189460A CN200710018946A CN101173070A CN 101173070 A CN101173070 A CN 101173070A CN A2007100189460 A CNA2007100189460 A CN A2007100189460A CN 200710018946 A CN200710018946 A CN 200710018946A CN 101173070 A CN101173070 A CN 101173070A
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Abstract
The invention relates to a powder-shaped bituminous mixture anti-track additive and a preparation method thereof. Each component of the additive has the compounding ratio by weight part that the polyethylene is 30 to 70 parts, the wasted polyethylene is 20 to 55 parts, the ethane-vinyl acetate is 8 to 15 parts, the petroleum asphalt is 2 to 7 parts, and the additive is 1 to 4 parts. Each component is smashed into the powder-shaped grain with 50 to 500 micrometers of grain diameter through mixing, heating, making into a bar shape, cooling and cutting. The polyethylene material adopted by the invention can improve the anti-track property of the bituminous mixture. The wasted polyethylene material adopted by the invention can reduce the product cost. The adopted ethane-vinyl acetate improves the crack resistance property at low temperature of the product. The adopted additive improves the anti-aging property of the product. Through controlling the production process, the invention reduces the product fineness, improves the blending uniformity, increases the adhesive ability between the bitumen and the aggregate, and increases the anti-peeling property of the bituminous mixture.
Description
Technical field
The invention belongs to bituminous pavement and use the material technology field, be specifically related to powdered asphalt mixture track-resistant additive and preparation method thereof.
Technical background
In high-grade highway, bituminous pavement is as a kind of jointless continuous pavement, with its good mechanical intensity, smooth attrition resistant surface, steadily comfortable train operation performance, no airborne dust, vibration is little, noise is low, the construction time is short and characteristics such as simple maintenance, has obtained application widely.Bituminous pavement has accounted for the overwhelming majority in the high grade pavement structure that China has built up, external developed country uses bituminous pavement then more extensive.Along with the continuous growth of the volume of traffic, and the influence of factor such as vehicle maximization, traffic channelization, bituminous pavement is faced with acid test.The early damage phenomenon of a lot of newly-built motorways is comparatively serious,, hole groove bad, loose, check crack as rut, damage by water, and wherein rut has become one of the most serious early disease of bituminous pavement.Rut is that the bituminous pavement vehicular load acts on down repeatedly, and runway produces bigger permanent deformation at the wheelpath place, and exercises the road surface damage phenomenon of the similar groove of a kind of shape of direction formation at bituminous pavement upper edge vehicle.
For asphalt pavement of highway, the hazardness that rut brings is very big: planeness descends, the comfortableness of influence driving and the security of goods; Ponding in the rut groove influences traffic safety; Bituminous texture reduced thickness in the rut groove has reduced the structural strength on road surface.The extensive method that adopts of control rut disease is to mix and stir at asphalt to add thermoplastic polyester in the process at present, mainly is polyethylene, is called for short PE.Promptly, mixing and stirring in the process of asphalt, directly will be that the product (being commonly referred to anti-rut agent) of raw material joins and mixes and stirs in the stove with the thermoplastic resin, anti-rut agent is subjected to thermal softening, in the compound moulding process, forms elastomerics, after the cooling, the anti-rut agent hardening, by embedding squeeze, reinforcement, gluing and viscosifying action, improve the anti-rut performance of asphalt.At present, Chang Yong anti-rut agent product has the PR PLAST of France, the DUROFLEX of Germany and the rut king of Shenzhen Hai Chuan.This several prods all is to be main raw material with the polyethylene, is processed into the cylindric or hemispherical granule of 3～6mm by screw extrusion press.
Studies show that: by adding anti-rut agent, though can improve the high-temperature stability of asphalt significantly, i.e. rutting resistance, the problem that exists is: present anti-rut agent is main raw material with the polyethylene, and product performance are single, bad adaptability; Prices of raw and semifnished materials height is unfavorable for promoting the use of; Product high temperature elasticity is better, but low-temperature performance is relatively poor, and fragility is big, embrittlement and cracking easily; Product mainly lays particular emphasis on macroscopical physical action, and the recovery of elasticity of the macromolecular material that utilize to add, embedding are squeezed and performance such as gluing improves the high-temperature stability of asphalt, and the effect of product micro interface is relatively poor; The ageing resistance and the antistrip performance of product are relatively poor; Product with the mixing and stirring in the process of building stones, it is easily softening, bonded to one another to be heated, and is difficult to be uniformly dispersed.
Summary of the invention
The objective of the invention is to overcome the shortcoming that existing asphalt mixture anti-rutting admixture exists, provide a kind of easy to use, cheap, improve track-resistant additive of asphalt over-all properties and preparation method thereof.
Admixture of the present invention is made by the raw material of following weight parts:
30～70 parts of polyethylene
20～55 parts of waste polyethylenes
8～15 parts in ethane-acetic acid ethyenyl fat
2～7 parts in petroleum pitch
1～4 part of additive
More preferred weight part proportioning is in this scope:
Polyethylene: 40～60 parts
Waste polyethylene: 30～50 parts
Ethane-acetic acid ethyenyl fat: 8～10 parts
Petroleum pitch: 4～6 parts
Additive: 1～3 part
The polyethylene of said components is one or both combinations in new LDPE (film grade), the medium-density polyethylene; Waste polyethylene is regenerating waste used high and low pressure polyethylene broken material; Ethane-acetic acid ethyenyl fat is vinyl acetate resin content range 5%～30%; The penetration degree of petroleum pitch is 30～70, in 0.1mm; Additive is one or both combinations in antioxidant and the thermo-stabilizer.
The preparation method of the present invention's powdered asphalt mixture track-resistant additive is:
With polyethylene, waste polyethylene, ethane-acetic acid ethyenyl fat, petroleum pitch and additive, according to the mixed in the prescription; Heating and stirring in 125～180 ℃ environment again; Be extruded into the strip work in-process subsequently; After the normal temperature water-bath cooling, cutting into length is 3～5mm particle; Break the particles down into the mealy solid particle that particle diameter is 50～500 μ m, promptly get product of the present invention.
The action principle of product of the present invention is as follows:
The macroscopic view physical action.Mix and stir in the process, product of the present invention is softening under high temperature action, forms elastomerics, under the effect of high speed machine stirring and shearing force, product fusion of the present invention, wire drawing, recoverable deformation, between being filled into pitch and gathering materials, to asphalt play that embedding is squeezed, reinforcement and cementation.
Filling effect.The particle size range of product of the present invention is 50～500 μ m, because the particle diameter particle distribution range is wide, at pitch with between gathering materials, according to the distribution of product particle, can play the effect of mutual filling.
Increase the active effect of physics.The present invention is the finely powdered solid particulate product, compares with traditional anti-rut agent product, has reduced particle grain size, has increased the particulate specific surface area, has increased the physical activity of product, thereby has accelerated the mutual rate of adsorption of pitch and product of the present invention; In addition, because product particle particle diameter of the present invention is little, in use, be easier to be uniformly dispersed.
Absorption and enhancement.Contain low crosslinking degree polymeric high oil absorbency macromolecular material in the product, formed a kind of three-dimensional cross-linked reticulated structure, have certain micropore.The oil suction principle of this material is different from traditional oil absorption material, mainly be to utilize the solvent action of its internal networking structure to the Van der Waals force of oil molecule, intramolecular oleophilic group segment and oil molecule, because the existence of cross-linked network, macromolecular material swelling and not dissolving, oil molecule is wrapped in the macromolecular network structure, the oil that absorbs in the material externally is not easy to discharge under the pressure effect, reaches oil suction, protects oily purpose.When summer high temperature, pitch is softening, and the inside and outside oil concentration difference of macromolecule network structure increases, and can absorb more softening pitch by diffusion and Van der Waals force, reduces because of the softening rut that causes of pitch.During winter low temperature, to oil content constraint effect, oil content is difficult to discharge by Van der Waals force for asphalt hardening, the three-dimensional net structure in the product, and pitch can not produce displacement, has reduced fissured generation.
The micro interface effect.Increase the building stones surfaceness, improve the adhesivity of pitch and building stones.Mix and stir in the process at asphalt, fused anti-rut agent particle wraps the building stones surface, has increased the building stones surfaceness, has reduced the contact angle between pitch and building stones, helps pitch wetting on the building stones surface.
The present invention's admixture, have easy to use, cheap, steady performance, except that having the asphalt mixture anti-rutting of raising performance, also low-temperature cracking-resistance, ageing resistance, water stability and the antistrip performance to asphalt has obvious effects, and overcome in the use of traditional anti-rut agent product and mixed and stirred uneven shortcoming, made product in use bring into play maximum usefulness
Embodiment
The present invention is described in more detail below in conjunction with embodiment, but the invention is not restricted to these embodiment.
Embodiment 1. is an example with production product 100kg of the present invention, and used raw material and weight proportion thereof are:
Polyethylene: 45kg
Waste polyethylene: 40kg
Ethane-acetic acid ethyenyl fat: 8kg
Petroleum pitch: 5kg
Additive: 2kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 45 parts
Waste polyethylene: 40 parts
Ethane-acetic acid ethyenyl fat: 8 parts
Petroleum pitch: 5 parts
Additive: 2 parts
Said components is mixed, after stirring, join in the hopper of screw extrusion press, open the temp control switch of screw extrusion press, four district's heating and temperature control are respectively: 125～135 ℃ in a district, 140～150 ℃ of two district's temperature, 155～165 ℃ of three district's temperature, 170～180 ℃ of four district's temperature, adjusting screw speed is 25～35 rev/mins; Open the funnel switch, behind the compound process screw extrusion press uniform mixing, extrude cylinder strip work in-process; Through normal temperature water-bath cooling, enter in the cutting machine, evenly cutting into length is 3～5mm particle; Particle is joined in the plastic breaker, and by the crushing and grinding effect, it is 50～500 μ m mealy solid particles that granular work in-process are processed into particle diameter, promptly gets product of the present invention.
Embodiment 2. is an example with production product 100kg of the present invention, and used raw material and weight proportion thereof are:
Polyethylene: 49.18kg
Waste polyethylene: 32.79kg
Ethane-acetic acid ethyenyl fat: 13.11kg
Petroleum pitch: 3.28kg
Additive: 1.64kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 30 parts
Waste polyethylene: 20 parts
Ethane-acetic acid ethyenyl fat: 8 parts
Petroleum pitch: 2 parts
Additive: 1 part
Be prepared into the admixture of powdered asphalt compound according to following method:
1. each component is mixed according to formula rate, stir;
2. above-mentioned compound is put in the hopper of screw extrusion press, the Heating temperature in four districts of control is respectively: 125～130 ℃ in a district, 145～150 ℃ in two districts, 155～160 ℃ in three districts, 175～180 ℃ in four districts; The control screw speed is 25 rev/mins;
3. open the funnel switch, behind the compound process screw extrusion press uniform mixing, extrude cylinder strip work in-process;
4. through normal temperature water-bath cooling;
5. put into cutting machine, evenly cutting into length is 3～4mm particle;
6. with the particle of above-mentioned 5 cuttings, join in the plastic breaker, by crushing and grinding, it is 80～100 μ m mealy solid particles that granular work in-process are processed into particle diameter, promptly makes the present invention's admixture.
Embodiment 3. is an example with production product 100kg of the present invention, and used raw material and weight proportion thereof are:
Polyethylene: 46.36kg
Waste polyethylene: 36.42kg
Ethane-acetic acid ethyenyl fat: 9.93kg
Petroleum pitch: 4.64kg
Additive: 2.65kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 70 parts
Waste polyethylene: 55 parts
Ethane-acetic acid ethyenyl fat: 15 parts
Petroleum pitch: 7 parts
Additive: 4 parts
Be prepared into admixture according to following method:
1. each component is mixed according to formula rate, stir;
2. above-mentioned compound is joined in the hopper of screw extrusion press the Heating temperature in four districts of control: 130～135 ℃ in a district, 145～148 ℃ in two districts, 160～165 ℃ in three districts, 170～175 ℃ in four districts; The control screw speed is 35 rev/mins,
3. open the funnel switch, behind the compound process screw extrusion press uniform mixing, extrude cylinder strip work in-process;
4. normal temperature water-bath cooling;
5. put into cutting machine, evenly cutting into length is 4～5mm particle;
6. with the particle of above-mentioned 5 cuttings, join in the plastic breaker, by crushing and grinding, it is 400～500 μ m mealy solid particles that granular work in-process are processed into particle diameter, promptly makes the present invention's admixture.
Embodiment 4. is that used raw material of example and weight proportion thereof are with production product 100kg of the present invention:
Polyethylene: 69.31kg
Waste polyethylene: 19.80kg
Ethane-acetic acid ethyenyl fat: 7.92kg
Petroleum pitch: 1.98kg
Additive: 0.99kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 70 parts
Waste polyethylene: 20 parts
Ethane-acetic acid ethyenyl fat: 8 parts
Petroleum pitch: 2 parts
Additive: 1 part
Be prepared into admixture according to following method:
1. each component is mixed according to formula rate, stir;
2. above-mentioned compound is joined in the hopper of screw extrusion press the Heating temperature in four districts of control: 130 ℃ in a district, 148 ℃ in two districts, 160 ℃ in three districts, 175 ℃ in four districts; The control screw speed is 30 rev/mins;
3. open the funnel switch, behind the compound process screw extrusion press uniform mixing, extrude cylinder strip work in-process;
4. normal temperature water-bath cooling;
5. put into cutting machine, evenly cutting into length is the 4mm particle;
6. with the particle of above-mentioned 5 cuttings, join in the plastic breaker, by crushing and grinding, it is 300 μ m mealy solid particles that granular work in-process are processed into particle diameter, promptly makes the present invention's admixture.
Embodiment 5. is that used raw material of example and weight proportion thereof are with production product 100kg of the present invention:
Polyethylene: 44.12kg
Waste polyethylene: 29.41kg
Ethane-acetic acid ethyenyl fat: 22.06kg
Petroleum pitch: 2.94kg
Additive: 1.47kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 30 parts
Waste polyethylene: 20 parts
Ethane-acetic acid ethyenyl fat: 15 parts
Petroleum pitch: 2 parts
Additive: 1 part
Its preparation method is identical with embodiment 2.
Embodiment 6. is that used raw material of example and weight proportion thereof are with production product 100kg of the present invention:
Polyethylene: 45.45kg
Waste polyethylene: 30.30kg
Ethane-acetic acid ethyenyl fat: 12.12kg
Petroleum pitch: 10.61kg
Additive: 1.52kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 30 parts
Waste polyethylene: 20 parts
Ethane-acetic acid ethyenyl fat: 8 parts
Petroleum pitch: 7 parts
Additive: 1 part
Its preparation method is identical with embodiment 3.
Embodiment 7
With production product 100kg of the present invention is that used raw material of example and weight proportion thereof are:
Polyethylene: 27.03kg
Waste polyethylene: 49.55kg
Ethane-acetic acid ethyenyl fat: 13.51kg
Petroleum pitch: 6.31kg
Additive: 3.60kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 30 parts
Waste polyethylene: 55 parts
Ethane-acetic acid ethyenyl fat: 15 parts
Petroleum pitch: 7 parts
Additive: 4 parts
Its preparation method is identical with embodiment 4.
Embodiment 8. is that used raw material of example and weight proportion thereof are with production product 100kg of the present invention:
Polyethylene: 48.61kg
Waste polyethylene: 38.19kg
Ethane-acetic acid ethyenyl fat: 5.56kg
Petroleum pitch: 4.86kg
Additive: 2.78kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 70 parts
Waste polyethylene: 55 parts
Ethane-acetic acid ethyenyl fat: 8 parts
Petroleum pitch: 7 parts
Additive: 4 parts
Its preparation method is identical with embodiment 1.
Embodiment 9. is that used raw material of example and weight proportion thereof are with production product 100kg of the present invention:
Polyethylene: 47.95kg
Waste polyethylene: 37.67kg
Ethane-acetic acid ethyenyl fat: 10.27kg
Petroleum pitch: 1.37kg
Additive: 2.74kg
In the proportioning of present embodiment, the weight part of raw materials used each component is:
Polyethylene: 70 parts
Waste polyethylene: 55 parts
Ethane-acetic acid ethyenyl fat: 15 parts
Petroleum pitch: 2 parts
Additive: 4 parts
Its preparation method is identical with embodiment 2.
The performance of admixture for checking the present invention, the admixture that above-mentioned each embodiment is made, press 0.4% of asphalt total weight parts respectively and add, carry out the anti-rut performance of high temperature, crack resistance at low-temperature test, and with do not add test of products result of the present invention and compare.Test is carried out according to the relevant rules of the ministerial standard JTJ 052-2000 of Chinese transportation portion " highway engineering pitch and asphalt testing regulation ".Test-results shows: after adding the present invention's admixture, the dynamic stability of asphalt, breaking strain, residual stability and retained strength compare performance index, all meet and exceed the requirement of ministerial standard JTG F40-2004 " asphalt highway construction technique normalizing ", compare with the test-results of not adding product of the present invention, every index all is improved largely.Main performance index is as shown in the table:
| Test index | Unit | Test method | Standard-required | Test-results | ||
| Do not add | Add | Do not add | Add product of the present invention | |||
| Dynamic stability | Inferior/mm | T0719 | Be not less than 1000 | Be not less than 3000 | 1580 | 7800～7900 |
| Breaking strain | - | T0715 | Be not less than 2600 | Be not less than 3000 | 2890 | 5000～5100 |
| Residual stability | ％ | T0709 | Be not less than 80 | Be not less than 85 | 85 | 90～95 |
| The retained strength ratio | ％ | T0729 | Be not less than 75 | Be not less than 80 | 82 | 88～95 |
Claims (8)
1. the powdered asphalt mixture track-resistant additive contains polyethylene, it is characterized in that: be made up of polyethylene, waste polyethylene, ethane-acetic acid ethyenyl fat, petroleum pitch, additive, the weight part proportioning of each component is,
30～70 parts of polyethylene
20～55 parts of waste polyethylenes
8～15 parts in ethane-acetic acid ethyenyl fat
2～7 parts in petroleum pitch
1～4 part of additive
2. according to the described powdered asphalt mixture track-resistant additive of claim 1, it is characterized in that: the optimization weight part proportioning of each component is 40～60 parts of polyethylene
30～50 parts of waste polyethylenes
8～10 parts in ethane-acetic acid ethyenyl fat
4～6 parts in petroleum pitch
1～3 part of additive
3. according to claim 1 or 2 described powdered asphalt mixture track-resistant additives, it is characterized in that: described polyethylene is one or both combinations in new LDPE (film grade), the medium-density polyethylene;
4. according to claim 1 or 2 described powdered asphalt mixture track-resistant additives, it is characterized in that: described ethane-acetic acid ethyenyl fat is vinyl acetate resin content range 5%～30%;
5. according to claim 1 or 2 described powdered asphalt mixture track-resistant additives, it is characterized in that: the penetration degree of petroleum pitch is 30～70, in 0.1mm;
6. according to the described powdered asphalt mixture track-resistant additive of claim 1, it is characterized in that: additive is one or both combinations in antioxidant and the thermo-stabilizer;
7. according to the preparation method of the described powdered asphalt mixture track-resistant additive of claim 1, it is characterized in that, carry out according to following step: polyethylene, waste polyethylene, ethane-acetic acid ethyenyl fat, petroleum pitch and additive according to the ratio in the prescription, are mixed; Subsequently in 125～180 ℃ of heating and stirring; Be extruded into the strip work in-process; Often after the warm water bath cooling, cutting into length is 3～5mm particle; Breaking the particles down into particle diameter is 50～500 μ m mealy solid particles, promptly gets product of the present invention;
8. according to the preparation method of the described powdered asphalt mixture track-resistant additive of claim 7, it is characterized in that, adopt screw extrusion press, Qi Si district Heating temperature is respectively: 125～135 ℃ in a district, and, 140～150 ℃ of two district's temperature, 155～165 ℃ of three district's temperature, 170～180 ℃ of four district's temperature; Screw speed is 25～35 rev/mins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100189460A CN101173070B (en) | 2007-10-26 | 2007-10-26 | Method for producing powdered asphalt mixture track-resistant additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100189460A CN101173070B (en) | 2007-10-26 | 2007-10-26 | Method for producing powdered asphalt mixture track-resistant additive |
Publications (2)
| Publication Number | Publication Date |
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| CN101173070A true CN101173070A (en) | 2008-05-07 |
| CN101173070B CN101173070B (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100189460A Expired - Fee Related CN101173070B (en) | 2007-10-26 | 2007-10-26 | Method for producing powdered asphalt mixture track-resistant additive |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115608A (en) * | 2010-12-22 | 2011-07-06 | 北京东方雨虹防水技术股份有限公司 | Modified asphalt synthetic resin high-polymer waterproof material and preparation method thereof |
| CN102234432A (en) * | 2010-04-28 | 2011-11-09 | 上海益泰能源科技有限公司 | Anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application |
| CN102585522A (en) * | 2011-12-20 | 2012-07-18 | 上海浦东路桥建设股份有限公司 | Direct-casting type anti-track agent and preparation method |
| CN107446210A (en) * | 2017-08-04 | 2017-12-08 | 江苏中路交通科学技术有限公司 | A kind of warm-mixed asphalt anti-rut agent, preparation method and applications |
| CN107501689A (en) * | 2017-09-18 | 2017-12-22 | 江苏中路交通科学技术有限公司 | A kind of compound multiple-effect warm-mixing agent, preparation method and applications |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1321275C (en) * | 1987-05-01 | 1993-08-10 | Ludo Zanzotto | Thermoplastic asphaltic composition |
| IT1253006B (en) * | 1991-12-23 | 1995-07-10 | Enichem Polimeri | BITUMES MODIFIED WITH RECYCLING AND / OR VIRGIN POLYMERS AND THEIR APPLICATIONS |
| GB9306517D0 (en) * | 1993-03-29 | 1993-05-19 | Polyphalt Inc | Stabilized bitumen compositions |
| CN100451064C (en) * | 2006-07-31 | 2009-01-14 | 西安高远公路养护技术有限公司 | Rut resisting admixutre for high-grade asphalt highway |
-
2007
- 2007-10-26 CN CN2007100189460A patent/CN101173070B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234432A (en) * | 2010-04-28 | 2011-11-09 | 上海益泰能源科技有限公司 | Anti-stripping warm mix asphalt additive agent comprising surfactant, its preparation method and application |
| CN102234432B (en) * | 2010-04-28 | 2013-01-02 | 上海益泰能源科技有限公司 | Anti-stripping warm mix asphalt additive agent comprising surfactant, preparation method and application thereof |
| CN102115608A (en) * | 2010-12-22 | 2011-07-06 | 北京东方雨虹防水技术股份有限公司 | Modified asphalt synthetic resin high-polymer waterproof material and preparation method thereof |
| CN102585522A (en) * | 2011-12-20 | 2012-07-18 | 上海浦东路桥建设股份有限公司 | Direct-casting type anti-track agent and preparation method |
| 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 |
| CN107446210A (en) * | 2017-08-04 | 2017-12-08 | 江苏中路交通科学技术有限公司 | A kind of warm-mixed asphalt anti-rut agent, preparation method and applications |
| CN107501689A (en) * | 2017-09-18 | 2017-12-22 | 江苏中路交通科学技术有限公司 | A kind of compound multiple-effect warm-mixing agent, preparation method and applications |
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|---|---|
| CN101173070B (en) | 2010-10-06 |
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