CN103360772A - Regeneration activator for old asphalt mixture of high type asphalt pavement - Google Patents
Regeneration activator for old asphalt mixture of high type asphalt pavement Download PDFInfo
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- CN103360772A CN103360772A CN2012101053929A CN201210105392A CN103360772A CN 103360772 A CN103360772 A CN 103360772A CN 2012101053929 A CN2012101053929 A CN 2012101053929A CN 201210105392 A CN201210105392 A CN 201210105392A CN 103360772 A CN103360772 A CN 103360772A
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Abstract
The invention discloses a recycling utilization technology of an old asphalt mixture of a high type asphalt pavement. According to the invention, for the chemical composition change condition of the old asphalt mixture in the asphalt pavement, saturates, aromatics, colloids and asphaltenes in the asphalt are analyzed by a component method; the missing part in the old asphalt is adjusted by adding an activator according to the change of each component of the aged asphalt; the component transfer problem (commonly known as aging) of the old asphalt material in the asphalt pavement is solved from the aspect of recovering the chemical components of the old asphalt; as a result, the chemical components of the old asphalt material are re-activated, the old asphalt mixture is caused to obtain new technological performance, the original mechanical properties and pavement performance indicators of the old asphalt mixture are recovered, and the old asphalt mixture can be better utilized by pavement engineering again.
Description
Technical field
The invention belongs to asphalt pavement mixture recovery technology field, specifically is a kind of recovery and utilization technology of senior bituminous pavement old asphalt mixture.
Background technology
At present China's motorway has reached 80,000 kilometers, has every year 10% road surface to reprocess.After bituminous pavement destroyed, most of being rooted out by milling abandoned contaminate environment, land occupation, waste resource.Since the nineties, China each province is all carrying out the research of old asphalt modification, but modification technology is single, and old pitch utilization ratio is not high, row in addition be used for the roadbase aspect, cause the resource significant wastage.The present invention can make asphalt pavement mixture 100% utilize, and is used in top courses at different levels.
Summary of the invention
For solving the deficiency of above-mentioned technology, the present invention is directed to the chemical constitution changing conditions of the old bituminous material in the bituminous pavement, according to saturated minute in the component method analysis pitch, fragrance is fragrant, resin and asphalt, variation according to each component after the ageing of asphalt, regulate the part that lacks in the old pitch by the admixture activator, chemical composition aspects from recover old pitch, solve the old bituminous material component branch problem (being commonly called as aging) in the bituminous pavement, the chemical composition of old bituminous material is reactivated, make old asphalt mixture obtain new technical feature, recover its original the mechanical properties and performance index, utilized by pavement engineering better.
Asphalt regenerative activator of the present invention is comprised of the phenyl alkylsulf of 20-80%, the plant asphalt of 30-50%, the tenderizer of 10-30%, the high-strength softening agent of 0.5-5%, the stablizer of 0.5-1%.According to proximate analysis situation and the three norms (penetration degree, ductility, softening temperature) of the old pitch in the different old asphalt pavement compounds, determine the pharmaceutical formulation of its activator.Determine the consumption standard of its activator during use according to the old asphalt content in the old asphalt pavement compound.In the old asphalt mixture that during use this activator was heated in the volume ratio, just can effectively improve the performance of the old pitch in the old asphalt pavement compound, component in its old bituminous material is activated, recover its original performance index, satisfy in the pavement of road design requirement to bituminous material.Technique is simple, reduces cost, reduces and pollutes, save energy.
Advantage of the present invention is:
1, this activator and old pitch have good cosolvency, have the ability of very strong dissolving and dispersed bitumens matter and the approach of additional colloid.
2, this activator has higher flash-point, and the aging performance of heat-resisting and anti-construction is arranged, and is applicable to heat regeneration processing.
3, this activator is the chemical composition of capable of regulating pitch, can adjust again the viscosity of pitch, makes the asphalt after the modification, and good rheological property is arranged, and is beneficial to construction.
4, this activator asepsis environment-protecting, to the workmen healthy, safety secure.
5, the international regenerator low price of this activator cost ratio is beneficial to utilization and extention.
6, this activator raw material is domestic abundant, is convenient to produce.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
1, will need reinforcement or the damaged old asphalt pavement that need to reprocess to start with milling car or some disintegrating apparatus after, utilize crushing mechanism that its old bitumen pavement material is controlled maximum particle diameter by the grating requirement that proposes standard and carry out fragmentation.
2, the old asphalt pavement compound with fragmentation carries out extraction test.Determine bitumen aggregate ratio and the aggregate grading of old asphalt pavement compound.
3, the old pitch that obtains after the extracting is carried out the component chemical analysis.Determine each component concentration of old pitch.Carry out simultaneously the three norms test (penetration degree, ductility, softening temperature) of old pitch, determine the mixed ratio example of regeneration activator.
4, by the surface layer structure of intending with the road surface old asphalt pavement compound is carried out gradation design, and carry out the bitumen aggregate ratio test, determine to intend using the bitumen aggregate ratio of asphalt pavement mixture.
5, according to bitumen aggregate ratio and the old grating situation of gathering materials of old asphalt mixture of design, determine whether the new pitch of admixture or add and newly gather materials.
6, determine the addition of activator according to the old pitch content in old pitch oilstone ratio content and the asphalt bitumen aggregate ratio newly drafted.
7, will design definite Bituminous Mixture Ratio and carry out shop experiment, determine whether its mechanical property meets design requirement.
8, according to the situation of site operation, carry out the pavement performance test of the asphalt after the modification.
Implement technical scheme of the present invention, clear thinking, orderliness is clear, is easy to construction technical staff and grasps, and is convenient to utilize, and schedule of operation is simple.Both guaranteed the construction quality of old bitumen pavement material regeneration, the while provides the scheme of designing and constructing efficiently for the regeneration of old asphalt pavement again.
The according to the above description announcement of book and instruction, those skilled in the art in the invention can also change and revise above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although used some specific terms in this specification sheets, these terms do not consist of any restriction to the present invention just for convenience of description.
Claims (2)
1. the recovery and utilization technology of a senior bituminous pavement old asphalt mixture, it is characterized in that the chemical constitution changing conditions to the old bituminous material in the bituminous pavement, according to saturated minute in the component method analysis pitch, fragrance is fragrant, resin and asphalt, variation according to each component after the ageing of asphalt, regulate the part that lacks in the old pitch by the admixture activator, chemical composition aspects from recover old pitch, solve the old bituminous material component branch problem (being commonly called as aging) in the bituminous pavement, the chemical composition of old bituminous material is reactivated, make old asphalt mixture obtain new technical feature, recover its original the mechanical properties and performance index, utilized by pavement engineering better.
2. activator according to claim 1 is characterized in that, is comprised of the phenyl alkylsulf of 20-80%, the plant asphalt of 30-50%, the tenderizer of 10-30%, the high-strength softening agent of 0.5-5%, the stablizer of 0.5-1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210105392.9A CN103360772B (en) | 2012-04-06 | 2012-04-06 | Regeneration activator for old asphalt mixture of high type asphalt pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210105392.9A CN103360772B (en) | 2012-04-06 | 2012-04-06 | Regeneration activator for old asphalt mixture of high type asphalt pavement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103360772A true CN103360772A (en) | 2013-10-23 |
| CN103360772B CN103360772B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210105392.9A Active CN103360772B (en) | 2012-04-06 | 2012-04-06 | Regeneration activator for old asphalt mixture of high type asphalt pavement |
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| CN (1) | CN103360772B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725024A (en) * | 2014-01-03 | 2014-04-16 | 东南大学 | Method for regenerating aged asphalt by utilizing biological asphalt |
| CN104609771A (en) * | 2015-01-14 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Warm-mixing reclaiming agent and preparation method thereof |
| CN105384392A (en) * | 2015-11-25 | 2016-03-09 | 吉林大学 | Asphalt light component prefilling packing and application method thereof |
| CN106009724A (en) * | 2016-06-17 | 2016-10-12 | 东南大学 | Modified regenerant and preparation method and application thereof |
| CN114441530A (en) * | 2022-01-17 | 2022-05-06 | 山东省路桥集团有限公司 | Method for evaluating activation degree of old asphalt mixture of pavement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724382B2 (en) * | 1978-03-13 | 1982-05-24 | ||
| CN101041574A (en) * | 2007-04-23 | 2007-09-26 | 凌天清 | Old asphalt pavement regeneration additive and method for preparing asphalt pavement regeneration mixture with the same |
| CN102086305A (en) * | 2010-12-27 | 2011-06-08 | 尹泽珲 | New composite modified rubber asphalt and preparation process thereof |
| CN102276996A (en) * | 2011-07-28 | 2011-12-14 | 中交第一公路勘察设计研究院有限公司 | Fog sealing layer material and preparation method thereof |
-
2012
- 2012-04-06 CN CN201210105392.9A patent/CN103360772B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724382B2 (en) * | 1978-03-13 | 1982-05-24 | ||
| CN101041574A (en) * | 2007-04-23 | 2007-09-26 | 凌天清 | Old asphalt pavement regeneration additive and method for preparing asphalt pavement regeneration mixture with the same |
| CN102086305A (en) * | 2010-12-27 | 2011-06-08 | 尹泽珲 | New composite modified rubber asphalt and preparation process thereof |
| CN102276996A (en) * | 2011-07-28 | 2011-12-14 | 中交第一公路勘察设计研究院有限公司 | Fog sealing layer material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王永刚等: "废旧沥青再生剂的开发", 《精细石油化工进展》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725024A (en) * | 2014-01-03 | 2014-04-16 | 东南大学 | Method for regenerating aged asphalt by utilizing biological asphalt |
| CN104609771A (en) * | 2015-01-14 | 2015-05-13 | 江苏苏博特新材料股份有限公司 | Warm-mixing reclaiming agent and preparation method thereof |
| CN104609771B (en) * | 2015-01-14 | 2017-04-12 | 江苏苏博特新材料股份有限公司 | Warm-mixing reclaiming agent and preparation method thereof |
| CN105384392A (en) * | 2015-11-25 | 2016-03-09 | 吉林大学 | Asphalt light component prefilling packing and application method thereof |
| CN106009724A (en) * | 2016-06-17 | 2016-10-12 | 东南大学 | Modified regenerant and preparation method and application thereof |
| CN114441530A (en) * | 2022-01-17 | 2022-05-06 | 山东省路桥集团有限公司 | Method for evaluating activation degree of old asphalt mixture of pavement |
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| Publication number | Publication date |
|---|---|
| CN103360772B (en) | 2015-06-17 |
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