CN103923474A - Waste asphalt mixture improving agent - Google Patents
Waste asphalt mixture improving agent Download PDFInfo
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- CN103923474A CN103923474A CN201410146273.7A CN201410146273A CN103923474A CN 103923474 A CN103923474 A CN 103923474A CN 201410146273 A CN201410146273 A CN 201410146273A CN 103923474 A CN103923474 A CN 103923474A
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Abstract
The invention discloses a waste asphalt mixture improving agent which consists of 50-70% of oil with high arene content, 30-40% of slurry rich in colloid and 5-10% of penetrating agent rich in epoxy group. By adoption of the waste asphalt mixture improving agent, waste resource circulation is achieved, and the coefficient of mining is reduced; for vegetation which is severely damaged by mining and hard to recover, the peeling exploration to a mine is reduced by more than 80% after a recycling technique is adopted, meanwhile the limited asphalt resource is saved, the popularization and the application of a hot mix plant recycling technique have great significance for road construction cost reduction, environmental protection and reasonable resource utilization, and the technique is an effective measure for strategy of sustainable development.
Description
Technical field
The invention belongs to road engineering category, belong to resource and environment field, in particular to a kind of waste asphalt mixture activator.
Background technology
China will produce 1.6 hundred million tons of old asphalt mixtures because of HIGHWAY MAINTENANCE every year, as cycling and reutilization, can save 20,000,000,000 yuan of direct material expenses.Plant-mix heat recycle technology is after old asphalt concrete road-surface milling, to transport factory back, by broken, screening (if desired), and according to indexs such as old material Asphalt Content, ageing of asphalt degree, mineral aggregate gradations, mixing newly the gathering materials of some amount, pitch and regeneration activator mixes and stirs, make reclaimed asphalt mixture reach the indices requirement of regulation and stipulation, according to the identical method of newly-built bituminous pavement making again.Can make full use of the old pitch resource (in asphalt, the asphalt content of 5% left and right accounts for the more than 50% of whole compound construction costs) in waste asphalt pavement material, regenerating mixture is functional, is one of energy-saving and emission-reduction direction of vigorously advocating of country.
Both at home and abroad expert and scholar's research were mainly considered the old asphalt extraction in waste asphalt pavement material (actually operating, difficulty is larger) out in the past, recovered old asphalt performance and reach the index of code requirement by developing all kinds bitumen regenerant.But, in use, adopt waste asphalt pavement material first to act on regenerator at a certain temperature, because the actual mixing time is shorter, aged asphalt and regenerator are difficult to mix completely, regenerator cannot effectively be brought into play its due effect, has affected the using character of reclaimed bituminous pavement.
Summary of the invention
The object of this invention is to provide a kind of waste asphalt mixture activator, in order to realize object of the present invention, intend adopting following technical scheme.
The present invention relates to a kind of waste asphalt mixture activator, it is characterized in that being formed by the oil of 50%～70% high aromaticity content, 30%～40% the slurry that is rich in colloid composition and 5%～10% epoxy soybean oil, wherein the oil of high aromaticity content by asphalt oil, carbon 9 aromatic hydrocarbons, extract out oil, catalytically cracked oil, Semen Maydis oil, cycloalkyl subtract two or 2～3 kinds of one-tenth subtracting in three distillates be grouped into; 1～2 kind of one-tenth in the nitrogen slag of the slurry that is rich in colloid composition after by furfural complexing denitrogenation, soybean oil, lubricating oil is grouped into.
In a preferred embodiment of the present invention, the oil of described high aromaticity content by asphalt oil, carbon 9 aromatic hydrocarbons, extract oil, catalytically cracked oil, Semen Maydis oil, cycloalkyl out and subtract two or subtract 2 kinds of one-tenth in three distillates and be grouped into the proportioning of 1～2:1 and form.
In another preferred embodiment of the present invention, 1～2 kind of one-tenth in the nitrogen slag of the described slurry that is rich in colloid composition after by furfural complexing denitrogenation, soybean oil, lubricating oil is grouped into the proportioning of 1～2:1 and forms.
In a preferred embodiment of the present invention, the oil of high aromaticity content is to mix according to 2-1:1-2 volume ratio by extracting oil+catalytically cracked oil out; Nitrogen slag+the lubricating oil of the slurry that is rich in colloid composition after by furfural complexing denitrogenation mixes according to 1-2:1-2 volume ratio; High-efficient penetrant is epoxy soybean oil.
In a preferred embodiment of the present invention, the oil of high aromaticity content is to mix according to 2-1:1-2 volume ratio by extracting oil+catalytically cracked oil out; Nitrogen slag+the lubricating oil of the slurry that is rich in colloid composition after by furfural complexing denitrogenation mixes according to 1-2:1-2 volume ratio.
In a preferred embodiment of the present invention, the oil of high aromaticity content is to mix according to 2-1:1-2 volume ratio by extracting oil+carbon 9 aromatic hydrocarbons out; The slurry that is rich in colloid composition is soybean oil.
In another preferred embodiment of the present invention, described waste asphalt mixture activator is prepared from as follows: the oil of high aromaticity content is added in reactor, be heated to 70～80 DEG C; Then, add the slurry that is rich in colloid composition to stir 8-12min; And then, after being warming up to 120～140 DEG C, mixture slurry add permeate agent to continue to stir the cooling waste asphalt mixture activator of making after 8-12min.
The present invention also relates to the asphalt that contains above-mentioned waste asphalt mixture activator on the other hand.
In a preferred embodiment of the present invention, described asphalt contains new pitch and waste asphalt, and described new pitch and the proportioning of waste asphalt are 2-4:1.
Waste asphalt mixture high-performance activator of the present invention is nontoxic, homogeneous, stable black-and-blue liquid; In four components, saturated point≤30%, fragrance sweet smell >=50%, colloid 10～20%, bituminous matter≤1%; Flash-point >=220 DEG C; 60 DEG C of kinematic viscosity 30～320mm2/s; Thin film oven (163 DEG C, 5h) test, viscosity ratio≤3, front and back, quality change absolute value≤3, front and back.
Product of the present invention meet " Recycled Asphalt Pavement " (GB/T25033), " bituminous pavement plant-mix heat recycle technology guide " (DB21/T1847), " asphalt highway regeneration techniques specification " (JTGF41), " standard specification for construction and acceptance of highway asphalt pavement " (JTGF40), " town road engineering construction and inspection of quality specification " code requirement such as (CJJ1).
The plant-mix heat recycle technology of application " waste asphalt mixture high-performance activator ", more common hot-mix asphalt mixture takes up an area from saving old material, has obviously saved more than 50% the consumption aspect of saving material, saves material cost more than 30%.The significant contribution of regenerating mixture is also to have reduced the coefficient of mining in mine; existing society is because exploitated ore is to seriously and difficult making up of the destruction of vegetation; after employing regeneration techniques, the stripping in mine is adopted and is reduced more than 80%; plant-mix heat recycle technology is applied reducing road construction cost, protection of the environment, the earth shaking meaning of having made rational use of resources, and is effective measure that meet the strategy of sustainable development.
Embodiment:
Embodiment 1:
The preparation method of product:
1, activator composition (volume ratio): the oil (extracting oil+catalytically cracked oil out according to 2:1 volume ratio)+32% of 61% high aromaticity content is rich in slurry (the nitrogen slag+lubricating oil after furfural complexing denitrogenation is according to 1:1 the volume ratio)+high-efficient penetrant epoxy soybean oil 7% of colloid composition.
2, the oil of high aromaticity content is added in reactor, be heated to 70～80 DEG C; Then, add the slurry that is rich in colloid composition to stir 10min; And then, after being warming up to 120～140 DEG C, mixture slurry add high-efficient penetrant to continue to stir cooling making " waste asphalt mixture high-performance activator " after 10min.
3, " waste asphalt mixture high-performance activator " in 120 DEG C～140 DEG C situations, directly be added in asphalt, active and infiltration amalgamation by it, carry out physics and chemosynthesis with aging pitch, recover chemical composition and the colloidal structure of aged asphalt, efficient and sufficient and waste asphalt mixture merges, and can improve the use properties of reclaimed asphalt mixture comprehensively.
Reclaimed asphalt mixture grating type is AC-20, and old material is the old pavement material 30% that airport expressway maintenance milling is got off, and waste asphalt mixture activator volume is 7%.In order to increase cogency, carry out the not mixture performance test of admixture activator 0% of same grating simultaneously, and carry out conventional asphalt (completely newly material) and carry out lateral performance comparison.
The across comparison of table 1 and other analogous products:
Table 2 embodiment 1 lateral performance comparative result
Embodiment 2
Activator composition: 65%(extracts oil+carbon 9 aromatic hydrocarbons out according to 2:1)+30% soybean oil+epoxy soybean oil 5%, preparation technology is with embodiment 1.
Reclaimed asphalt mixture grating type is AC-16, old material volume 28%.
The lateral performance comparison of table 3 embodiment 2.
From above two embodiment, the reclaimed asphalt mixture of admixture activator on year-on-year basis not admixture obviously can improve compound snappiness, low-temperature cracking-resistance and anti-water damage property; Conventional asphalt on year-on-year basis, the reclaimed asphalt mixture property indices of admixture activator is basic identical.Further illustrate, " waste asphalt mixture high-performance activator " joins in waste asphalt pavement material, can at utmost recover the technical feature of aged asphalt, promote the pitch oil film and the newly fusion of asphalt that again recover, thereby improve the use properties of reclaimed asphalt mixture comprehensively.
The above is the preferred embodiments of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a waste asphalt mixture activator, it is characterized in that being formed by the oil of 50%～70% high aromaticity content, 30%～40% the slurry that is rich in colloid composition and 5%～10% epoxy soybean oil, wherein the oil of high aromaticity content by asphalt oil, carbon 9 aromatic hydrocarbons, extract out oil, catalytically cracked oil, Semen Maydis oil, cycloalkyl subtract two or 2～3 kinds of one-tenth subtracting in three distillates be grouped into; 1～2 kind of one-tenth in the nitrogen slag of the slurry that is rich in colloid composition after by furfural complexing denitrogenation, soybean oil, lubricating oil is grouped into.
2. activator according to claim 1, the oil of described high aromaticity content by asphalt oil, carbon 9 aromatic hydrocarbons, extract oil, catalytically cracked oil, Semen Maydis oil, cycloalkyl out and subtract two or subtract 2 kinds of one-tenth in three distillates and be grouped into the proportioning of 1～2:1 and form.
3. activator according to claim 1 and 2,1～2 kind of one-tenth in the nitrogen slag of the described slurry that is rich in colloid composition after by furfural complexing denitrogenation, soybean oil, lubricating oil is grouped into the proportioning of 1～2:1 and forms.
4. activator according to claim 1, the oil of high aromaticity content is to mix according to 2-1:1-2 volume ratio by extracting oil+catalytically cracked oil out; Nitrogen slag+the lubricating oil of the slurry that is rich in colloid composition after by furfural complexing denitrogenation mixes according to 1-2:1-2 volume ratio; High-efficient penetrant is epoxy soybean oil.
5. activator according to claim 1, the oil of high aromaticity content is to mix according to 2-1:1-2 volume ratio by extracting oil+catalytically cracked oil out; Nitrogen slag+the lubricating oil of the slurry that is rich in colloid composition after by furfural complexing denitrogenation mixes according to 1-2:1-2 volume ratio.
6. activator according to claim 1, the oil of high aromaticity content is to mix according to 2-1:1-2 volume ratio by extracting oil+carbon 9 aromatic hydrocarbons out; The slurry that is rich in colloid composition is soybean oil.
7. the preparation method of the waste asphalt mixture activator described in claim 1-6 any one, it is prepared from as follows: the oil of high aromaticity content is added in reactor, be heated to 70～80 DEG C; Then, add the slurry that is rich in colloid composition to stir 8-12min; And then, after being warming up to 120～140 DEG C, mixture slurry add permeate agent to continue to stir the cooling waste asphalt mixture activator of making after 8-12min.
8. contain the asphalt of above-mentioned waste asphalt mixture activator.
9. asphalt according to claim 8, described asphalt contains new pitch and waste asphalt, and described new pitch and the proportioning of waste asphalt are 2-4:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146273.7A CN103923474A (en) | 2014-04-14 | 2014-04-14 | Waste asphalt mixture improving agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146273.7A CN103923474A (en) | 2014-04-14 | 2014-04-14 | Waste asphalt mixture improving agent |
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| CN103923474A true CN103923474A (en) | 2014-07-16 |
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| CN201410146273.7A Pending CN103923474A (en) | 2014-04-14 | 2014-04-14 | Waste asphalt mixture improving agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828222A (en) * | 2017-11-13 | 2018-03-23 | 甘肃畅陇公路养护技术研究院有限公司 | A kind of bitumen regenerant and its preparation method and application |
| CN109082985A (en) * | 2018-08-15 | 2018-12-25 | 深圳市粤通建设工程有限公司 | Sheet pavement in-situ heat regeneration construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107828222A (en) * | 2017-11-13 | 2018-03-23 | 甘肃畅陇公路养护技术研究院有限公司 | A kind of bitumen regenerant and its preparation method and application |
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Application publication date: 20140716 |