CN101376575B - Cold regeneration reducer of waste asphalt mixture, method for preparing the reducer and use - Google Patents
Cold regeneration reducer of waste asphalt mixture, method for preparing the reducer and use Download PDFInfo
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- CN101376575B CN101376575B CN2008101505046A CN200810150504A CN101376575B CN 101376575 B CN101376575 B CN 101376575B CN 2008101505046 A CN2008101505046 A CN 2008101505046A CN 200810150504 A CN200810150504 A CN 200810150504A CN 101376575 B CN101376575 B CN 101376575B
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- oil
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- reducing agent
- cold regeneration
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a cold recycling reducer for waste bituminous mixtures, and a method used for preparing the reducer and the application thereof. According to the weight percentage, the reducer is composed of naphthenic aromatic compounds, gumming oil, solvent oil, a reinforcing agent, anhydrous alcohol, a synergist and a solubilizing and dispersing agent. The preparation method comprises the following steps: at the normal temperature, the naphthenic aromatic compounds and the gumming oil are weighed and mixed in proportion, and are continuously sheared in a high speed to form a uniform emulsion; the solvent oil and the reinforcing agent are added into the emulsion for continuously stirring and emulsifying; and then, after the anhydrous alcohol is added for continuously stirring and emulsifying, the synergist and the solubilizing and dispersing agent are added to obtain the cold recycling reducer. The invention is applied to the construction of the base courses and the binder courses of bituminous concrete pavements. The bond strength is high, the rheological characteristic is good, the aromatic phenol content is higher, the anti-aging ability is strong, the weathering resistance is good, the ambient air is not polluted, and the reducer is used for improving the physical and the chemical properties of the chemical components of the waste bitumen, and improving or recovering the intermiscibility of the waste bituminous material roads. The invention is widely applied to the construction of express highways, urban roads and common roads.
Description
Technical field
The present invention relates to a kind of regeneration reducing agent that is used for waste asphalt mixture, be specifically related to the cold regeneration reducing agent of waste asphalt mixture and prepare the methods and applications of cold regeneration reducing agent.
Background technology
The highway regeneration techniques has become the hot spot technology of 21 century highway maintenance.After 10～20 years, according to highway in China net development program, China's motorway will reach 8.5 ten thousand kilometers, and the road network total kilometrage also will reach 6,500,000 kilometers.According to bituminous life, overhauled once in per about 10 years, with road surface width average 22m, overhaul thickness 10cm and calculate, 8.5 ten thousand kilometers freeway net will produce the old compound near 5,000 ten thousand tons every year on average, if can be used, can save about 10,000,000,000 Renminbi of materials cost every year.Otherwise these can only be discarded after digging for the huge asphalt concrete layer of number turns in vain, cause environmental pollution on the one hand, be a kind of wasting of resources for the very deficient country of this high-quality asphalt of China on the other hand, and the new building stones of a large amount of uses, exist exploitated ore can cause forest vegetation to reduce, the environmental destruction that soil erosion etc. are serious, particularly if the place of stacking is not right, under the effect of heavy rain, just easily form artificial rubble flow or landslide, damage farmland and village, jeopardize the people's lives and property safety, be unfavorable for the defective of road construction STRATEGIES OF SUSTAINABLE DEVELOPMENT thought.
Summary of the invention
The purpose of this invention is to provide a kind of cohesive strength height, rheological is good, has higher fragrance to divide content, and resistance of aging is strong, the cold regeneration reducing agent of the waste asphalt mixture of good weatherability.
Another object of the present invention provides the method for the cold regeneration reducing agent of preparation.
Still a further object of the present invention provides the application of cold regeneration reducing agent.
Not contaminated in order to improve environment, as to save stone material exploitation avoids landslide and vegetation to reduce, and the defective of soil erosion, technical scheme of the present invention are to solve like this:
A kind of cold regeneration reducing agent of waste asphalt mixture, special character of the present invention is by the percentage mass ratio, naphthenic aromatic compounds by 40%～45%, 22%～30% gummy oil, 20%～30% solvent oil, 2%～3% toughener, 3%～4% dehydrated alcohol, 2%～3% synergistic agent, 2%～3% solubilising dispersion agent is formed, described naphthenic aromatic compounds comprises indane and tetralin and their methyl-derivatives and steroid, the mixture of one or more in the terpenoid, described gummy oil comprises petroleum residual oil, heavy distillate, catalytic pyrolysis oil one or more compound wherein, described solvent oil comprises gasoline, kerosene, wherein one or more of diesel oil, described toughener comprises phenyl amines, described synergistic agent comprises imidazolidine derivatives, the bicyclic imidazo quinoline derivant, the mixture of one or more of cycloalkyl imidazolidine derivatives, described solubilising dispersion agent comprises the metal carboxylate in the cationic fluorochemical tensio-active agent, Sulfonates, the mixture of one or more of phosphoric acid salt and Sulfates.
The preparation method of described cold regeneration reducing agent, undertaken by following step:
1), under 22 ℃～28 ℃ conditions of normal temperature, take by weighing 40%～45% naphthenic aromatic compounds and 22%～30% gummy oil and mix according to the above ratio, after continuous high speed is sheared 25min～35min, form homogeneous latex emulsion;
2), in emulsion, add 20%～30% solvent oil respectively, 2%～3% toughener is at lasting stirring and emulsifying 18min～25min;
3) add, again after 3%～4% dehydrated alcohol continues stirring and emulsifying 8min～15min, add the solubilising dispersion agent of 2%～3% synergistic agent and 2%～3% and continue stirring and emulsifying 25min～35min, promptly obtain described cold regeneration reducing agent.
The application method of described cold regeneration reducing agent, undertaken by following step:
1), the waste asphalt mixture of returning is broken into powder, powder diameter is≤25mm;
2), with 0.8%～1.2% the ratio of above-mentioned cold regeneration reducing agent in the waste asphalt mixture powder of returning, join in the waste asphalt mixture powder with mist envelope state, after fully stirring, the basic unit that is used for bituminous concrete pavement reaches surface layer making down.
Cold regeneration techniques is owing to wrap can not be as hot mixing to mix with the anti-aging modification of new pitch by the bituminous thaw process at the old pitch that reclaims surface of aggregate and form firm combining.So in early days, the cold mixing compound can only be used for the road of the low volume of traffic such as backroad.Improving constantly along with regeneration reducing agent performance in recent years, by adding reductive agent (comprising various chemical reducing agents), can improve physics, the chemical property of aged asphalt by the interaction between reductive agent and the old pitch, thereby enlarge the range of application of cold regeneration techniques.
The present invention compared with prior art, the cohesive strength height, rheological is good, has higher fragrance to divide content, resistance of aging is strong, the characteristics of good weatherability, advantage of the present invention is:
1), the preparation method of cold regeneration reducing agent carries out at normal temperatures, and is pollution-free to ambient air, the environment around having protected.
2), the basic unit of bituminous concrete pavement and down surface layer all adopt the old pavement asphalt concrete layer to turn over waste asphalt concrete after digging, reach utilization of waste material, reduce discarded old pavement pitch floor space, reduce the produced quantity of new building stones, save the building stones cost on new road surface.
3), improve physics, the chemical property of waste asphalt chemical composition with reductive agent, thereby the road of improving or recovering the waste asphalt material is with the performance that mixes, still reduce processing with the cold regenerated method of plantmix simultaneously, do not need waste asphalt mixture is carried out hot-work, pollution-free to ambient air.
4), realized the resource circulation utilization, solved the problem of environmental pollution that old stockpile is put generation, reduced land seizure and mine resources the exploitation.
5), reduced the waste of a large amount of coal resources, avoided the discharging of toxic and harmful in a large amount of greenhouse gases and the pitch heat-processed again, and then also produced good atmospheric environment protection benefit by force.
6), adopt the Bituminous Pavement Cold Regeneration technology, reduce virgin material and use, avoided excessively cutting into a mountain for quarrying, reduced because of cutting into a mountain and got the noise pollution that produces in the stone process, make ecotope obtain protection.
7) alleviated the traffic burden at making scene, to a certain extent, avoided economic problems and problem of environmental pollution because of too much raw material transportation generation, it is strong to have played the merit of killing two birds with one stone.
The pavement performance index of the waste asphalt mixture of handling through the cold regeneration reducing agent of waste asphalt mixture of the present invention reaches the basic unit of Department of Transportation's " asphalt highway regeneration techniques standard " and surface layer regenerated pavement performance index down, is widely used in motorway and urban road and common road construction.
Embodiment
Below in conjunction with embodiment summary of the invention is described further:
Embodiment 1
A kind of cold regeneration reducing agent of waste asphalt mixture, press the percentage mass ratio, naphthenic aromatic compounds by 40%～45%, 22%～30% gummy oil, 20%～30% solvent oil, 2%～3% toughener, 3%～4% dehydrated alcohol, 2%～3% synergistic agent, 2%～3% solubilising dispersion agent is formed, described naphthenic aromatic compounds comprises indane and tetralin and their methyl-derivatives and steroid, the mixture of one or more in the terpenoid, described gummy oil comprises petroleum residual oil, heavy distillate, catalytic pyrolysis oil one or more compound wherein, described solvent oil comprises gasoline, kerosene, wherein one or more of diesel oil, described toughener comprises phenyl amines, described synergistic agent comprises imidazolidine derivatives, the bicyclic imidazo quinoline derivant, the mixture of one or more of cycloalkyl imidazolidine derivatives, described solubilising dispersion agent comprises the metal carboxylate in the cationic fluorochemical tensio-active agent, Sulfonates, the mixture of one or more of phosphoric acid salt and Sulfates.
Above-mentioned naphthenic aromatic compounds contains resin or polar aromatics, has extremely strong polarity.
Above-mentioned toughener is a phenyl amines, molecular formula C6H5NH2.
Above-mentioned synergistic agent is an imidazolidine derivatives, and the mixture of one or more of bicyclic imidazo quinoline derivant, cycloalkyl imidazolidine derivatives is used to strengthen the cohesive strength between the waste and old compound.
Above-mentioned solubilising dispersion agent is the metal carboxylate (R in the cationic fluorochemical tensio-active agent
fCOO-M
+), Sulfonates (R
fSO
3-M
+), phosphoric acid salt (R
fOPO
3 2-M
2+) and Sulfates (R
fOSO
3-M
+), one or more mixture.Lower surface tension and lower micelle-forming concentration can strengthen the effect of colloidal spatial stability.
The preparation method of cold regeneration reducing agent, undertaken by following step:
1), under 22 ℃～28 ℃ conditions of normal temperature, take by weighing 40%～45% naphthenic aromatic compounds and 22%～30% gummy oil and mix according to the above ratio, after continuous high speed is sheared 25min～35min, form homogeneous latex emulsion;
2), in emulsion, add 20%～30% solvent oil respectively, 2%～3% toughener is at lasting stirring and emulsifying 18min～25min;
3) add, again after 3%～4% dehydrated alcohol continues stirring and emulsifying 8min～15min, add the solubilising dispersion agent of 2%～3% synergistic agent and 2%～3% and continue stirring and emulsifying 25min～35min, promptly obtain described cold regeneration reducing agent.
The application method of cold regeneration reducing agent, undertaken by following step:
1), the waste asphalt mixture of returning is broken into powder, powder diameter is≤25mm;
2), with the ratio of above-mentioned cold regeneration reducing agent in the 0.8%-1.2% of the waste asphalt mixture powder of returning, join in the waste asphalt mixture powder with mist envelope state, after fully stirring, the basic unit that is used for bituminous concrete pavement reaches surface layer making down.
Embodiment 2
The percentage mass ratio is pressed in cold regeneration reducing agent, naphthenic aromatic compounds by 41%～43%, 23%～27% gummy oil, 22%～26% solvent oil, 2%～3% toughener, 3%～4% dehydrated alcohol, 2%～3% synergistic agent, 2%～3% solubilising dispersion agent is formed, and preparation method and application method are with embodiment 1.
Embodiment 3
The percentage mass ratio is pressed in cold regeneration reducing agent, the naphthenic aromatic compounds by 40%, 25% gummy oil, 25% solvent oil, 3.5% ethanol, 2.5% synergistic agent, 2.0% toughener, 2.0% solubilising dispersion agent is formed, and preparation method and application method are with embodiment 1.
Reductive agent of the present invention according to waste asphalt 4～5 ‰, is joined among the aging SK AH-70# that reclaims from waste material milling material, stir 35min at normal temperatures, make regeneration asphalt.
Test regeneration asphalt index and the contrast of aged asphalt index are as follows:
| Pitch | 25 ℃ of penetration degrees | 15 ℃ of ductilities | Softening temperature |
| Waste asphalt AH-70# | 36 | 40 | 62 |
| Regeneration asphalt | 70 | ＞100 | 49 |
With 0.8～1.2% the ratio of reductive agent of the present invention in waste asphalt mixture, be sprayed onto in the waste asphalt mixture with mist envelope state, (Xi'an is around city high speed milling material, 5 years duration of service) according to asphalt highway regeneration techniques standard " JT%F41-2008 " shaping test piece, health, detect its pavement performance index.
Test result is as follows:
Embodiment 4
The percentage mass ratio is pressed in cold regeneration reducing agent, the naphthenic aromatic compounds by 44%, 25% gummy oil, 21% solvent oil, 3.0% ethanol, 2.0% synergistic agent, 2.5% toughener, 2.5% solubilising dispersion agent is formed, and preparation method and application method are with embodiment 1.
Reductive agent of the present invention according to waste asphalt 4～5 ‰, is joined among the aging SK AH-70# that reclaims from waste material milling material, stir 35min at normal temperatures, make regeneration asphalt.
Test regeneration asphalt index and the contrast of aged asphalt index are as follows:
| Pitch | 25 ℃ of penetration degrees | 15 ℃ of ductilities | Softening temperature |
| Waste asphalt AH-70# | 38 | 41 | 61 |
| Regeneration asphalt | 70 | ＞100 | 48 |
With 0.8～1.2% the ratio of reductive agent of the present invention in waste asphalt mixture, be sprayed onto in the waste asphalt mixture with mist envelope state, (Xi'an is around city high speed milling material, 5 years duration of service) according to asphalt highway regeneration techniques standard " JT%F41-2008 " shaping test piece, health, detect its pavement performance index.
Test result is as follows:
Embodiment 5
The percentage mass ratio is pressed in cold regeneration reducing agent, the naphthenic aromatic compounds by 41%, 20% gummy oil, 27% solvent oil, 3.6% ethanol, 2.8% synergistic agent, 2.8% toughener, 2.8% solubilising dispersion agent is formed, and preparation method and application method are with embodiment 1.
Reductive agent of the present invention according to waste asphalt 4～5 ‰, is joined among the aging SK AH-70# that reclaims from waste material milling material, stir 35min at normal temperatures, make regeneration asphalt.
Test regeneration asphalt index and the contrast of aged asphalt index are as follows:
| Pitch | 25 ℃ of penetration degrees | 15 ℃ of ductilities | Softening temperature |
| Waste asphalt AH-70# | 37 | 42 | 61 |
| Regeneration asphalt | 71 | ＞100 | 47 |
With 0.8～1.2% the ratio of reductive agent of the present invention in waste asphalt mixture, (Xi'an is around city high speed milling material to be sprayed onto waste asphalt mixture with mist envelope state, 5 years duration of service) in, according to asphalt highway regeneration techniques standard " JTG F41-2008 " shaping test piece, health, detect its pavement performance index.
Test result is as follows:
Claims (4)
1. the cold regeneration reducing agent of a waste asphalt mixture, it is characterized in that by the percentage mass ratio, naphthenic aromatic compounds by 40%～45%, 22%～30% gummy oil, 20%～30% solvent oil, 2%～3% toughener, 3%～4% dehydrated alcohol, 2%～3% synergistic agent, 2%～3% solubilising dispersion agent is formed, above-mentioned each composition total mass is 100%, described naphthenic aromatic compounds comprises indane and tetralin and their methyl-derivatives and steroid, in the terpenoid more than one, described gummy oil comprises petroleum residual oil, heavy distillate, catalytic pyrolysis oil more than one compound wherein, described solvent oil comprises gasoline, kerosene, wherein more than one of diesel oil, described toughener comprises phenyl amines, described synergistic agent comprises imidazolidine derivatives, the bicyclic imidazo quinoline derivant, more than one of cycloalkyl imidazolidine derivatives, described solubilising dispersion agent comprises the metal carboxylate in the cationic fluorochemical tensio-active agent, Sulfonates, more than one of phosphoric acid salt and Sulfates.
2. the cold regeneration reducing agent of waste asphalt mixture according to claim 1, it is characterized in that cold regeneration reducing agent is by the percentage mass ratio, naphthenic aromatic compounds by 41%～43%, 23%～27% gummy oil, 22%～26% solvent oil, 2%～3% toughener, 3%～4% dehydrated alcohol, 2%～3% synergistic agent, 2%～3% solubilising dispersion agent is formed.
3. the preparation method of the described cold regeneration reducing agent of claim 1, undertaken by following step:
1), under 22 ℃～28 ℃ conditions of normal temperature, take by weighing 40%～45% naphthenic aromatic compounds and 22%～30% gummy oil and mix according to the above ratio, after continuous high speed is sheared 25min～35min, form homogeneous latex emulsion;
2), in emulsion, add 20%～30% solvent oil respectively, 2%～3% toughener is at lasting stirring and emulsifying 18min～25min;
3) add, again after 3%～4% dehydrated alcohol continues stirring and emulsifying 8min～15min, add the solubilising dispersion agent of 2%～3% synergistic agent and 2%～3% and continue stirring and emulsifying 25min～35min, promptly obtain described cold regeneration reducing agent.
4. the application method of the described cold regeneration reducing agent of claim 1, undertaken by following step:
1), the waste asphalt mixture of returning is broken into powder, powder diameter is≤25mm
2), with the ratio of above-mentioned cold regeneration reducing agent in the 0.8%-1.2% of the waste asphalt mixture powder of returning, join in the waste asphalt mixture powder with mist envelope state, after fully stirring, the basic unit that is used for bituminous concrete pavement reaches surface layer making down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101505046A CN101376575B (en) | 2008-07-31 | 2008-07-31 | Cold regeneration reducer of waste asphalt mixture, method for preparing the reducer and use |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101505046A CN101376575B (en) | 2008-07-31 | 2008-07-31 | Cold regeneration reducer of waste asphalt mixture, method for preparing the reducer and use |
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| Publication Number | Publication Date |
|---|---|
| CN101376575A CN101376575A (en) | 2009-03-04 |
| CN101376575B true CN101376575B (en) | 2010-08-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296512B (en) * | 2011-06-22 | 2013-02-27 | 西安国琳实业股份有限公司 | Preventive maintenance method of asphalt concrete pavement |
| CN102863806B (en) * | 2012-10-16 | 2015-03-11 | 深圳市科中大交通建材有限公司 | High-elasticity waste asphalt modifier and preparation method thereof |
| CN104327521B (en) * | 2014-10-20 | 2016-10-19 | 河南省高远公路养护技术有限公司 | Old bitumen pavement material room temperature activating and regenerating agent and preparation method thereof |
| CN105985653A (en) * | 2015-02-03 | 2016-10-05 | 吕刚 | Normal temperature asphalt modifier prepared by using waste rubber oil and preparation method of modified asphalt |
| CN110441384B (en) * | 2019-07-12 | 2021-11-09 | 核工业北京地质研究院 | Experimental method for determining uranium precipitation action strength of asphalt |
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Assignee: Xi'an Guolin Industrial Co., Ltd. Assignor: Xi'an Guolin Regeneration Technology Research Co., Ltd. Contract record no.: 2012610000074 Denomination of invention: Cold regeneration reducer of waste asphalt mixture, method for preparing the reducer and use Granted publication date: 20100818 License type: Exclusive License Open date: 20090304 Record date: 20120529 |
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Effective date of registration: 20190320 Address after: 710024 East Vice-1, Zhengjie Village, Baqiao Town, Chanba Ecological Zone, Xi'an City, Shaanxi Province Patentee after: Xi'an Zhongli asphalt Co., Ltd. Address before: 710075 Room 105, Information Port Building, No. 9, Gaoxin No. 3 Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xi'an Guolin Regeneration Technology Research Co., Ltd. |
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