CN103923473A - Environment-friendly asphalt mixture warm mix modifier and preparation method thereof - Google Patents
Environment-friendly asphalt mixture warm mix modifier and preparation method thereof Download PDFInfo
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- CN103923473A CN103923473A CN201310013993.1A CN201310013993A CN103923473A CN 103923473 A CN103923473 A CN 103923473A CN 201310013993 A CN201310013993 A CN 201310013993A CN 103923473 A CN103923473 A CN 103923473A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
Belonging to the field of road materials, the invention in particular relates to an environment-friendly asphalt mixture warm mix modifier and a preparation method thereof. The modifier comprises the following components by weight: 100 parts of polyethylene wax, 20-40 parts of an organic lubricant, 10-30 parts of a lubricating surfactant, and 3-10 parts of a plasticizer. The preparation method includes: subjecting the polyethylene wax, the organic lubricant, the lubricating surfactant and the plasticizer to heating melting at 130-150DEG C, mixing them evenly, conducting extrusion by a screw extruder, carrying out cooling under normal temperature, and cutting the product into particles. The warm mix modifier provided by the invention is environment-friendly, energy-saving and emission reducing, can effectively lower the mixing temperature of the asphalt mixture by 20-40DEG C, enhance the adhesion performance between asphalt cement and aggregate, improve the anti-water damage performance of the warm mix asphalt mixture, and strengthen the rutting resistance and low temperature resistance of the warm mix asphalt mixture.
Description
Technical field
The invention belongs to pavement material field, be specifically related to a kind of environment-friendly type asphalt mixture warm-mixing modifier and preparation method thereof, this properties-correcting agent can reduce the construction temperature of hot-mix asphalt mixture.
Background technology
As a kind of high energy-conservation, low emission, eco-friendly novel asphalt compound, Warm-Mix Bitumen Mixture has obtained the great attention in global range.Europe and the U.S. take the lead in having carried out prospective experimental study, and form a series of Patents technology.China has also carried out some independent research work, has developed some products.Warm-Mix Bitumen Mixture is compared traditional hot-mix asphalt mixture and is had lower mixing and stirring, pave and compacting temperature, and obviously fuel saving consumption, minimizing obnoxious flavour and soot emissions, effectively avoid the thermal ageing of bituminous cements in the process of mixing and stirring.
At present, conventional warm mix technology can be summarized as three major types: (1) asphalt foaming technology, adopt a small amount of water to add in pitch, or pass through foaming machine, or use gathering materials of water wetted material or humidity etc., bring out asphalt foaming, the asphalt membrane structure forming by foaming realizes under lesser temps wrapping up in of gathering materials attached, and the construction temperature that reduces asphalt.(2) organic additive class, produces or adds a kind of organic additive of low melting point during asphalt mixture mixing at bituminous cements, to improve the rheological property of bituminous cements, thereby reduce asphalt mix, pave and compacting temperature.(3) chemical surfactant, its technical characterstic is a small amount of tensio-active agent, water and heated bitumen acting in conjunction in the process of mixing and stirring, and by the powerful dispersive ability of mixing and stirring, realizes and being interlaced with one another.
The spread in performance of existing all kinds of warm-mixing agents is uneven at present, has the deficiency of one or more aspects.For asphalt foaming technology, can improve the compaction capacity of asphalt, but not remarkable on its high-temperature behavior impact, water stability can significantly reduce, water sensitivity increases, and stronger to device dependence; For surfactant-based, can improve the compaction capacity of asphalt, but its high-temperature behavior be improved not remarkable, and need to increase equipment while adding; For organic viscosity reduction class, can improve the compaction capacity of asphalt, and high-temperature behavior significantly improves, but the Moisture Damage risk of asphalt increases, easily there is asphalt stripping phenomenon.
For implementing and implement national energy-saving, reduce discharging policy, realize production domesticization and the variation of warm mix properties-correcting agent kind, guarantee the pavement performance of asphalt, developing a kind of over-all properties environment-friendly type asphalt mixture warm-mixing modifier superior, easy to use has very important realistic meaning.
Summary of the invention
The object of the present invention is to provide a kind of environment-friendly type asphalt mixture warm-mixing modifier and preparation method thereof, by selecting the body material that the polyethylene wax of waste polyethylene plastics catalytic pyrolysis is properties-correcting agent, be equipped with the tensio-active agent that plays lubricated and antistripping effect of suitable proportion simultaneously, when obviously improving the compaction capacity of asphalt, significantly improving its anti-rut performance, the Water Damage of Asphalt Mixtures and the cold cracking risk that solve existing organic viscosity reduction class additive existence increase, easily occur the problem of asphalt stripping.
For achieving the above object, technical scheme of the present invention is as follows: a kind of environment-friendly type asphalt mixture warm-mixing modifier, is characterized in that it comprises the component of following weight part: 100 parts of polyethylene waxs, 20 ~ 40 parts of organic lubricants, 10 ~ 30 parts, oilness tensio-active agent, 3 ~ 10 parts, softening agent.According to a preferred embodiment of the invention, polyethylene wax: organic lubricant: oilness tensio-active agent: the weight ratio of softening agent is 100:26 ~ 34:16 ~ 22:3 ~ 6.
Described polyethylene wax is made by catalytic pyrolysis by waste polyethylene plastics, and its fusing point is at 90 ℃ ~ 110 ℃, and molecular-weight average is between 1000 ~ 3000, can reduce the construction temperature of asphalt, improve construction workability, strengthen compactness, improve the high-temperature stability of asphalt simultaneously.The preparation method of polyethylene wax is prior art, does not repeat them here.Polyethylene wax of the present invention utilizes waste and scrap preparation, can reach regeneration, economize on resources and eco-friendly object.
Described organic lubricant is the mixture of a kind of or at least two kinds of any proportionings of stearic amide, fatty acid amide, ethylene bis stearic acid amide or pentaerythritol stearate, and its fusing point is between 65 ℃ ~ 140 ℃.
Described oilness tensio-active agent is a kind of cats product, including, but not limited to alkylammonium, alkyl trimethyl quaternary ammonium salt, alkyl dimethyl benzyl quaternary ammonium salt, imidazoline type ammonium salt.
Described softening agent is one or both the mixture of any proportioning in dibutyl phthalate or dimixo-octyl phthalate.
The present invention also further relates to a kind of preparation method of environment-friendly type asphalt mixture warm-mixing modifier: by polyethylene wax, organic lubricant, oilness tensio-active agent and softening agent at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cut into the particle of 3 ~ 5mm.
The volume of warm mix properties-correcting agent of the present invention in asphalt is asphalt quality 1 ~ 8%, and preferably volume is that 2 ~ 4%, 2 ~ 4% volume can guarantee that the temperature of mixing and stirring of asphalt reduces by 20 ~ 40 ℃.
Environment-friendly type asphalt mixture warm-mixing modifier of the present invention, has following significant effect:
1) in hot-mix asphalt mixture or in pitch, add warm mix properties-correcting agent of the present invention, can improve the compaction capacity of asphalt, make asphalt mix and stir, pave and compacting temperature reduces by 20 ~ 40 ℃, and the energy can save asphalt heating and mix and stir time and reduce the discharge of obnoxious flavour;
2) polyethylene wax adding in the present invention, is made by catalytic pyrolysis by waste polyethylene plastics, not only can reduce the cost of warm mix properties-correcting agent, and can solve the problem of environmental pollution of waste polyethylene plastics, reaches the object of regeneration, recycling economy;
3) organic lubricant used in the present invention, is a kind of micromolecular compound that contains polar group and apolar chain segment unit, very good with the consistency of each component in polyethylene wax and pitch;
4) polyethylene wax adding in the present invention and organic lubricant can reduce the high temperature viscosity of pitch, improve softening temperature and 60 ℃ of kinetic viscosities of pitch, thereby improve the construction workability of asphalt, improve its high-temperature stability; The tensio-active agent adding can reduce surface tension and the coating ability of pitch, further contributes to thus compacting, improves pitch and the adhesion property of gathering materials simultaneously.
5) warm mix properties-correcting agent of the present invention not only contributes to reduce production and the compacting temperature of asphalt, and improves the water resistant damage performance of asphalt.As warm-mixing additive, its reduce viscosity and improve the flowing property of pitch and it in the coating property of surface of aggregate, make thus the required temperature of compacting compound compare with plain asphalt compound and reduce by 20 ~ 40 ℃; As adhering to and interior poly-improving agent, it improves the anti-water damage property of asphalt;
6) complete processing of the present invention is simple, easy to use, has saved the process procedure of asphalt modification.
Embodiment
For a better understanding of the present invention, below in conjunction with embodiment, further illustrate content of the present invention, but content of the present invention is not limited to the following examples.
Embodiment 1
100 parts of polyethylene waxs by molecular-weight average between 1000 ~ 3000,34 parts of ethylene bis stearic acid amides, 20 parts of alkyl trimethyl quaternary ammonium salts, 6 parts of dibutyl phthalates, at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
Embodiment 2
100 parts of polyethylene waxs by molecular-weight average between 1000 ~ 3000,28 parts of ethylene bis stearic acid amides, 18 parts of imidazoline type ammonium salts, 3 parts of dibutyl phthalates, at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
Embodiment 3
100 parts of polyethylene waxs by molecular-weight average between 1000 ~ 3000,30 parts of stearic amides, 16 parts of alkyl trimethyl quaternary ammonium salts, 5 parts of dibutyl phthalates, at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
Embodiment 4
100 parts of polyethylene waxs by molecular-weight average between 1000 ~ 3000,30 parts of stearic amides, 22 parts of imidazoline type ammonium salts, 6 parts of dimixo-octyl phthalates, at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
Embodiment 5
100 parts of polyethylene waxs by molecular-weight average between 1000 ~ 3000,26 parts of ethylene bis stearic acid amides, 18 parts of alkyl dimethyl benzyl quaternary ammonium salt, 5 parts of dimixo-octyl phthalates, at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
Embodiment 6
100 parts of polyethylene waxs by molecular-weight average between 1000 ~ 3000,18 parts of ethylene bis stearic acid amides, 14 parts of fatty acid amides, 20 parts of alkyl trimethyl quaternary ammonium salts, 2 parts of dibutyl phthalates, 2 parts of dimixo-octyl phthalates, at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
Embodiment 7
100 parts of polyethylene waxs by molecular-weight average between 1000 ~ 3000,28 parts of pentaerythritol stearates, 20 parts of alkylammoniums, 5 parts of dimixo-octyl phthalates, at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
In the present invention, all raw materials are commercially available prod, do not repeat them here.
The particle that above-described embodiment 1 ~ 7 is prepared, volume with 3% (mass percent based on pitch) adds in AC-20 type compound, under differing temps, make marshal piece, test to evaluate the warm mix effect of asphalt by compacting voidage, test-results is in Table 1.
The voidage (%) of table 1 asphalt under different compacting temperatures
From table 1, under the condition lower than 30 ℃ of hot-mix asphalt mixture compacting temperatures, the Warm-Mix Bitumen Mixture of adding different embodiment still can obtain the voidage with hot-mix asphalt mixture same effect, and properties-correcting agent warm mix successful of the present invention is described.
The water stability of evaluating Warm-Mix Bitumen Mixture by freeze thawing split test, test-results is in Table 2.
Table 2 Warm-Mix Bitumen Mixture water stability testing result
From table 2, the water stability that adds Warm-Mix Bitumen Mixture of the present invention is not less than plain asphalt compound, illustrates that thus the present invention has effectively improved the not good problem of water stability that existing organic viscosity reduction class additive exists.
By dynamic shear test and bending creep test, carry out PG level estimate, evaluate the high temperature performance of bituminous cements, test-results is in Table 3.
Table 3 PG performance rate test-results
From table 3, add the basically identical of the S of warm mix properties-correcting agent of the present invention and m value and matrix pitch, the performance rate of matrix pitch is PG64-22, the performance rate that adds the bituminous cements of warm mix properties-correcting agent of the present invention is PG70-22.Explanation thus: both low-temperature performancies are substantially suitable, and the high-temperature behavior of adding bituminous cements of the present invention is than the high grade of matrix pitch, and high temperature stability is significantly improved.
Therefore, warm mix properties-correcting agent of the present invention is environmentally friendly, energy-saving and emission-reduction, that can effectively reduce asphalt mixes and stirs 20 ~ 40 ℃ of temperature, effectively improve stability of asphalt mixture and the bad problem of low-temperature performance that other organic viscosity reduction class warm mix properties-correcting agent exist, adhesion property between improving bituminous cements and gathering materials, the anti-rut performance of enhancing Warm-Mix Bitumen Mixture.
Claims (7)
1. an environment-friendly type asphalt mixture warm-mixing modifier, is characterized in that it comprises the component of following weight part: 100 parts of polyethylene waxs, 20 ~ 40 parts of organic lubricants, 10 ~ 30 parts, oilness tensio-active agent, 3 ~ 10 parts, softening agent.
2. warm mix properties-correcting agent according to claim 1, is characterized in that, described polyethylene wax is made by catalytic pyrolysis by waste polyethylene plastics, and its fusing point is at 90 ℃ ~ 110 ℃, and molecular-weight average is between 1000 ~ 3000.
3. warm mix properties-correcting agent according to claim 1, it is characterized in that, described organic lubricant is the mixture of a kind of of stearic amide, fatty acid amide, ethylene bis stearic acid amide or pentaerythritol stearate or at least two kinds, and described organic lubricant fusing point is between 65 ℃ ~ 140 ℃.
4. warm mix properties-correcting agent according to claim 1, it is characterized in that, described oilness tensio-active agent is a kind of cats product, and described oilness tensio-active agent is alkylammonium, alkyl trimethyl quaternary ammonium salt, alkyl dimethyl benzyl quaternary ammonium salt or imidazoline type ammonium salt.
5. warm mix properties-correcting agent according to claim 1, is characterized in that, described plasticizing component is one or both the mixture in dibutyl phthalate or dimixo-octyl phthalate.
6. the preparation method of environment-friendly type asphalt mixture warm-mixing modifier according to claim 1, it is characterized in that by polyethylene wax, organic lubricant, oilness tensio-active agent and softening agent at 130 ~ 150 ℃ heating and melting, mix, through screw extrusion press, extrude, cooling under normal temperature, cutting granulating.
7. the using method of environment-friendly type asphalt mixture warm-mixing modifier according to claim 1, the volume that it is characterized in that this warm mix properties-correcting agent is asphalt quality 1 ~ 8%.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371340A (en) * | 2014-11-07 | 2015-02-25 | 交通运输部科学研究院 | Styrene-butadiene rubber modified asphalt mixture and preparation method thereof |
| CN107523074A (en) * | 2016-06-17 | 2017-12-29 | 中国石油化工股份有限公司 | A kind of warm mix flame-retardant pitch, contain its compound and preparation method thereof |
| CN107523073A (en) * | 2016-06-17 | 2017-12-29 | 中国石油化工股份有限公司 | A kind of Warm-mix hard asphalt, contain its compound and preparation method thereof |
| CN107722651A (en) * | 2017-10-19 | 2018-02-23 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of can the quick high intensity micro-surface area bituminous cements of open to traffic preparation method |
| CN108976829A (en) * | 2018-06-27 | 2018-12-11 | 河海大学 | A kind of warm-mixing agent and preparation method thereof suitable for high-viscosity asphalt |
| CN111303546A (en) * | 2020-03-03 | 2020-06-19 | 重庆交通大学 | Modified asphalt viscosity reducer and preparation method thereof |
| CN112062495A (en) * | 2020-09-17 | 2020-12-11 | 西南交通大学 | Warm-mix regenerant and preparation method of warm-mix regenerated asphalt |
| CN113248809A (en) * | 2021-04-09 | 2021-08-13 | 重庆交通大学 | Plasticizing modified warm-mix agent and warm-mix asphalt preparation method |
| CN114773999A (en) * | 2022-03-17 | 2022-07-22 | 太原东方雨虹建筑材料有限公司 | Water-based base layer treating agent capable of being stored at low temperature and preparation method thereof |
| CN115124279A (en) * | 2022-05-17 | 2022-09-30 | 大连市市政设计研究院有限责任公司 | Preparation method of 100% RAP warm-mixed recycled asphalt mixture |
| WO2023032609A1 (en) * | 2021-08-30 | 2023-03-09 | Ｅｎｅｏｓ株式会社 | Asphalt binder and asphalt mixture for paving |
| KR102659645B1 (en) * | 2023-09-11 | 2024-04-23 | (주)윤성산업개발 | Carbon reduced low temperature asphalt additives composition and asphalt mixture using low temperature asphalt additives |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765641A (en) * | 2007-07-26 | 2010-06-30 | 阿克佐诺贝尔股份有限公司 | adhesion and cohesion modifiers for asphalt |
| WO2010080718A1 (en) * | 2009-01-12 | 2010-07-15 | Prime Eco Group, Inc. | Asphalt prime coat |
| CN101861360A (en) * | 2007-11-14 | 2010-10-13 | 阿克佐诺贝尔股份有限公司 | Asphalt modifiers for 'warm mix' applications including adhesion promoter |
| CN102020859A (en) * | 2010-11-11 | 2011-04-20 | 浙江沃普曼高新建材有限公司 | Modified asphalt composition with creeping characteristic and preparation method thereof |
| CN102558879A (en) * | 2012-02-29 | 2012-07-11 | 陕西长大博源公路养护科技有限公司 | Compound asphalt mixture wet-mixing additive and preparation method thereof |
-
2013
- 2013-01-15 CN CN201310013993.1A patent/CN103923473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765641A (en) * | 2007-07-26 | 2010-06-30 | 阿克佐诺贝尔股份有限公司 | adhesion and cohesion modifiers for asphalt |
| CN101861360A (en) * | 2007-11-14 | 2010-10-13 | 阿克佐诺贝尔股份有限公司 | Asphalt modifiers for 'warm mix' applications including adhesion promoter |
| WO2010080718A1 (en) * | 2009-01-12 | 2010-07-15 | Prime Eco Group, Inc. | Asphalt prime coat |
| CN102020859A (en) * | 2010-11-11 | 2011-04-20 | 浙江沃普曼高新建材有限公司 | Modified asphalt composition with creeping characteristic and preparation method thereof |
| CN102558879A (en) * | 2012-02-29 | 2012-07-11 | 陕西长大博源公路养护科技有限公司 | Compound asphalt mixture wet-mixing additive and preparation method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371340A (en) * | 2014-11-07 | 2015-02-25 | 交通运输部科学研究院 | Styrene-butadiene rubber modified asphalt mixture and preparation method thereof |
| CN104371340B (en) * | 2014-11-07 | 2017-05-24 | 交通运输部科学研究院 | Styrene-butadiene rubber modified asphalt mixture and preparation method thereof |
| CN107523074A (en) * | 2016-06-17 | 2017-12-29 | 中国石油化工股份有限公司 | A kind of warm mix flame-retardant pitch, contain its compound and preparation method thereof |
| CN107523073A (en) * | 2016-06-17 | 2017-12-29 | 中国石油化工股份有限公司 | A kind of Warm-mix hard asphalt, contain its compound and preparation method thereof |
| CN107722651A (en) * | 2017-10-19 | 2018-02-23 | 上海市政工程设计研究总院（集团）有限公司 | It is a kind of can the quick high intensity micro-surface area bituminous cements of open to traffic preparation method |
| CN108976829A (en) * | 2018-06-27 | 2018-12-11 | 河海大学 | A kind of warm-mixing agent and preparation method thereof suitable for high-viscosity asphalt |
| CN111303546A (en) * | 2020-03-03 | 2020-06-19 | 重庆交通大学 | Modified asphalt viscosity reducer and preparation method thereof |
| CN112062495A (en) * | 2020-09-17 | 2020-12-11 | 西南交通大学 | Warm-mix regenerant and preparation method of warm-mix regenerated asphalt |
| CN113248809A (en) * | 2021-04-09 | 2021-08-13 | 重庆交通大学 | Plasticizing modified warm-mix agent and warm-mix asphalt preparation method |
| WO2023032609A1 (en) * | 2021-08-30 | 2023-03-09 | Ｅｎｅｏｓ株式会社 | Asphalt binder and asphalt mixture for paving |
| CN114773999A (en) * | 2022-03-17 | 2022-07-22 | 太原东方雨虹建筑材料有限公司 | Water-based base layer treating agent capable of being stored at low temperature and preparation method thereof |
| CN115124279A (en) * | 2022-05-17 | 2022-09-30 | 大连市市政设计研究院有限责任公司 | Preparation method of 100% RAP warm-mixed recycled asphalt mixture |
| KR102659645B1 (en) * | 2023-09-11 | 2024-04-23 | (주)윤성산업개발 | Carbon reduced low temperature asphalt additives composition and asphalt mixture using low temperature asphalt additives |
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