CN103265229A - SMA (styrene maleic anhydride) on-site thermal regenerated asphalt mixture - Google Patents
SMA (styrene maleic anhydride) on-site thermal regenerated asphalt mixture Download PDFInfo
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- CN103265229A CN103265229A CN2013102244190A CN201310224419A CN103265229A CN 103265229 A CN103265229 A CN 103265229A CN 2013102244190 A CN2013102244190 A CN 2013102244190A CN 201310224419 A CN201310224419 A CN 201310224419A CN 103265229 A CN103265229 A CN 103265229A
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Abstract
The invention discloses an SMA (styrene maleic anhydride) on-site thermal regenerated asphalt mixture and a preparation method thereof. Raw materials of the SMA on-site thermal regenerated asphalt mixture adopt SMA asphalt pavement milling and planning materials and comprise a regenerated old material and newly added asphalt mixture as well as an additive, wherein the regenerated old material adopts the SMA asphalt pavement milling and planning materials; the additive is SBS (styrene butadiene styrene) modified asphalt, an asphalt regenerating agent or a mixture of SBS modified asphalt and the asphalt regenerating agent; and the newly added asphalt mixture comprises SBS modified asphalt, cellulose fibers and mineral aggregates. According to the preparation method, the SMA asphalt pavement milling and planning materials are taken as raw materials, resource is saved, and environmental pollution is avoided; and the prepared mixture can be applied to an SMA asphalt pavement again, each technical requirement can be met, and preparation cost is reduced.
Description
Technical field
The present invention relates to a kind of asphalt-regenerating material, be specifically related to a kind of regenerating mixture of SMA bituminous pavement.
Background technology
Along with the quick growth of Chinese national economy, and the developing rapidly of high-grade highway construction, the SMA bituminous pavement occupies larger specific gravity with its good pavement performance gradually in motorway upper layer structure.Yet because the sharp increase of the volume of traffic and the frequent appearance of overweight overload phenomenon, the increase of road surface working life in addition, various disease forms constantly appear in bituminous pavement, and are faced with the baptism of big area maintenance.At matrix pitch and common hot-mix asphalt mixture, adopt regeneration techniques at present, can cut the waste, save cost.But the SMA bituminous pavement be there is no relevant Study of Regeneration Technique.And the SMA asphalt uses expensive modifying asphalt and high-quality to gather materials more, directly its milling is abandoned not only in maintenance process and can be caused enormous economic loss, can cause environmental pollution simultaneously, and the regeneration problem of therefore studying the SMA road surface just seems particularly important.
Summary of the invention
The objective of the invention is the defective that exists in the prior art in order to solve, providing a kind of is the compound that raw material is regenerated and obtained with the SMA asphalt pavement material.
In order to achieve the above object, the invention provides a kind of SMA on-site heat regeneration asphalt, this SMA on-site heat regeneration asphalt raw material adopts SMA bituminous pavement milling material (RAP material); Comprise the old material of regeneration and newly add asphalt; The old material of regenerating adopts SMA bituminous pavement milling material, also comprises additive; Additive is selected from SBS modifying asphalt, bitumen regenerant or both mixing; The old material bitumen aggregate ratio of regenerating is 5.8%～6.0%(preferred 5.9%); Bitumen regenerant accounts for 0～1% of described SMA bituminous pavement milling material medium pitch weight; Newly add asphalt and comprise SBS modifying asphalt, lignin fibre and mineral aggregate; It is consistent with the bitumen aggregate ratio of reclaimed asphalt mixture newly to add the asphalt bitumen aggregate ratio; Add newly that lignin fibre accounts for the 0.2%～0.4%(that newly adds the asphalt gross weight preferred 0.3% in the asphalt); Newly add asphalt chats material package and draw together the 1# material that particle diameter is 10～20mm, the 2# material that particle diameter is 5～10mm, 4# material and the breeze that particle diameter is 0～3mm, and with the weight ratio of RAP material be the preferred 6:6:1.5:1.5:85 of 1.5～7:2～8:0.5～2:0.5～1.5:85～95().
The present invention also provides the preparation method of above-mentioned SMA on-site heat regeneration asphalt, may further comprise the steps:
(1) newly adds the asphalt configuration: get SBS modifying asphalt, lignin fibre and mineral aggregate by proportioning and mix stirring;
(2) SMA bituminous pavement milling material regeneration: get scattered SMA bituminous pavement milling material, add bitumen regenerant, mix; Add the SBS modifying asphalt, mix;
(3) SMA on-site heat regeneration asphalt preparation: will newly add asphalt and add in the reclaimed asphalt mixture, and fully stir, and namely get described SMA on-site heat regeneration asphalt.
After stirring is finished in the step (1), 165 ℃ of insulations down; RAP material scattered in the described step (2) adds bitumen regenerant after 135 ℃ of following mixs are even, mix 30s adds SBS modifying asphalt mix 30s again; Churning time 90～120s in the described step (3), whipping temp is 135 ℃.
The present invention has the following advantages compared to existing technology: be raw material with SMA bituminous pavement milling material (RAP material), economize on resources, avoid environmental pollution, and the compound for preparing can be reused for the SMA bituminous pavement, each technical requirements all meets the demands, and has reduced preparation cost.The present invention passes through RAP material composition and performance analysis, determined that new interpolation compound respectively forms proportioning, wherein the bitumen regenerant of Tian Jiaing, SBS modifying asphalt and mineral aggregate gradation are formed the aging and loss that has effectively remedied original RAP material, and the performance of final mixing prod is met the requirements.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.
Embodiment one
The SMA reclaimed asphalt mixture is formed (weight part):
1, the old material of regenerating: RAP material (SMA bituminous pavement milling material) 950 parts (about bitumen aggregate ratio 5.8%), 0.52 part of bitumen regenerant (day the SZS of section regenerator) (adding proportion is decided according to RAP material medium pitch degree of aging, the highest be no more than RAP material medium pitch weight 1%);
2, newly add 20 parts in asphalt: 1# material, 20 parts in 2# material, 5 parts in 4# material, 5 parts of breezes, 2.9 parts of SBS modifying asphalts, 0.15 part of lignin fibre.
Indoor preparation process:
1) newly adds asphalt at indoor mix, put into 165 ℃ of baking ovens behind the mix and be incubated;
2) scattered RAP mix under 135 ℃ temperature is even, add bitumen regenerant then, mix 30s;
3) add SBS modifying asphalt mix 30s in the RAP;
4) the new asphalt of having mixed in the baking oven is joined among the RAP, fully stir 90-120s, the mix temperature is 135 ℃, namely gets final SMA reclaimed asphalt mixture.
The SMA on-site heat regeneration asphalt mineral aggregate gradation of preparation is as shown in table 1.
Table 1 mineral aggregate gradation is formed
Embodiment two
The SMA reclaimed asphalt mixture is formed (weight part):
1, the old material of regenerating: RAP(SMA bituminous pavement milling material) 850 parts (bitumen aggregate ratio 5.8%), newly add 0.85 part of SBS modifying asphalt (addition determine according to the bitumen aggregate ratio in the RAP material, make bitumen aggregate ratio gets final product in the old material of regeneration) between 5.8%～6.0%;
2, newly add 60 parts in asphalt: 1# material, 60 parts in 2# material, 15 parts in 4# material, 15 parts of breezes, 8.85 parts of SBS modifying asphalts, 0.45 part of lignin fibre.
Indoor preparation process is with embodiment one, and SMA on-site heat regeneration asphalt mineral aggregate gradation is as shown in table 2
Table 2 mineral aggregate gradation is formed
Embodiment three
The SMA reclaimed asphalt mixture is formed (weight part):
1, the old material of regenerating: RAP(SMA bituminous pavement milling material) 900 parts (bitumen aggregate ratio 5.8%), 1.8 parts of SBS modifying asphalts;
2, newly add 50 parts in asphalt: 1# material, 30 parts in 2# material, 10 parts in 4# material, 10 parts of breezes, 6.0 parts of SBS modifying asphalts, 0.3 part of lignin fibre.
Indoor preparation process is with embodiment one, and SMA on-site heat regeneration asphalt mineral aggregate gradation is as shown in table 3.
Table 3 mineral aggregate gradation is formed
Effect embodiment
The SMA reclaimed asphalt mixture of each embodiment preparation is carried out performance test:
Marshall Test: get the SMA reclaimed asphalt mixture and adopt two-sided 75 shaping test pieces in fact that respectively hit of Marshall, mold temperature is preferably 135 ℃.Carry out Marshall Test with reference to " highway engineering pitch and asphalt testing regulation " code requirement, test places room temperature cooling demoulding after 12 hours with the marshal piece of 135 ℃ of (unified mold temperature) compacted unders, carries out the volumetric parameter test then.
Xie Lunbao analyses Lou test: carry out Xie Lunbao with reference to " highway engineering pitch and asphalt testing regulation " code requirement and analyse Lou test, test conditions is being analysed the test leakage examination with the insulation of SMA reclaimed asphalt mixture under 185 ± 2 ℃ the temperature after 1 hour.
Superpave mix-design test: carry out the Superpave mix-design test with reference to " highway engineering pitch and asphalt testing regulation " code requirement, the marshal piece of moulding was soaked 20 hours under 20 ± 0.5 ℃ of water temperatures, adopt 300 tests of dispersing of Los Angeles abrasion testion machine rotation then.
Immersion Marshall Test: according to " highway engineering pitch and asphalt testing regulation " code requirement Marshall Test that soaks, estimate anti-water damage property, every group of three parallel test specimens.
Freeze thawing split test: carry out the freeze thawing split test according to " highway engineering pitch and asphalt testing regulation " code requirement, estimate anti-water damage property, every group of three parallel test specimens.
Thimble test: carry out wheel tracking test according to " highway engineering pitch and asphalt testing regulation " code requirement, estimate high-temperature behavior, every group of three parallel tests.
Each test-results is as shown in table 4.
Each SMA reclaimed asphalt mixture The performance test results of table 4
As can be seen from the above table, the SMA reclaimed asphalt mixture of the present invention's preparation all can satisfy performance requriements, makes the RAP material obtain regeneration.
Claims (4)
1. SMA on-site heat regeneration asphalt, this SMA on-site heat regeneration asphalt raw material adopt SMA bituminous pavement milling material; It is characterized in that: comprise the old material of regeneration and newly add asphalt; The old material of described regeneration adopts described SMA bituminous pavement milling material, also comprises additive; Described additive is selected from SBS modifying asphalt, bitumen regenerant or both mixing; The old material bitumen aggregate ratio of described regeneration is 5.8%～6.0%; Described bitumen regenerant accounts for 0～1% of described SMA bituminous pavement milling material medium pitch weight; The described asphalt that newly adds comprises SBS modifying asphalt, lignin fibre and mineral aggregate; It is described that newly to add the asphalt bitumen aggregate ratio consistent with the bitumen aggregate ratio of described reclaimed asphalt mixture; The described lignin fibre that newly adds in the asphalt accounts for and newly adds 0.2%～0.4% of asphalt gross weight; The described asphalt chats material package of newly adding is drawn together the 1# material that particle diameter is 10～20mm, the 2# material that particle diameter is 5～10mm, 4# material and the breeze that particle diameter is 0～3mm, and with the weight ratio of described SMA bituminous pavement milling material be 1.5～7:2～8:0.5～2:0.5～1.5:85～95.
2. SMA on-site heat regeneration asphalt according to claim 1 is characterized in that: the old material of described regeneration and newly to add the asphalt bitumen aggregate ratio be 5.9%; The described lignin fibre that newly adds in the asphalt accounts for and newly adds 0.3% of asphalt gross weight; Described weight ratio of newly adding 1# material in the asphalt, 2# material, 4# material and breeze and described SMA bituminous pavement milling material is 6:6:1.5:1.5:85.
3. the preparation method of claim 1 or 2 described SMA on-site heat regeneration asphalts is characterized in that: may further comprise the steps:
(1) newly adds the asphalt configuration: get SBS modifying asphalt, lignin fibre and mineral aggregate by proportioning and mix stirring;
(2) SMA bituminous pavement milling material regeneration: get scattered SMA bituminous pavement milling material, add bitumen regenerant, mix; Add the SBS modifying asphalt, mix makes the old material of described regeneration;
(3) SMA on-site heat regeneration asphalt preparation: will newly add asphalt and add in the old material of regeneration, and fully stir, and namely get described SMA on-site heat regeneration asphalt.
4. preparation method according to claim 3 is characterized in that: after stirring is finished in the described step (1), 165 ℃ of insulations down; SMA bituminous pavement milling material scattered in the described step (2) adds bitumen regenerant after 135 ℃ of following mixs are even, mix 30s adds SBS modifying asphalt mix 30s again; Churning time 90～120s in the described step (3), whipping temp is 135 ℃.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790093A (en) * | 2014-01-06 | 2014-05-14 | 徐州徐工筑路机械有限公司 | Feeding and blending technology and feeding and blending device for cold recycling of emulsified asphalt factory |
| CN104003656A (en) * | 2014-05-05 | 2014-08-27 | 广厦建设集团有限责任公司贵州分公司 | SMA mixture, and preparation method and application thereof |
| CN104119032A (en) * | 2014-07-03 | 2014-10-29 | 同济大学 | A regenerating method of an SBS asphalt mixture with a high RAP mixing amount |
| CN105271950A (en) * | 2015-11-30 | 2016-01-27 | 苏交科集团股份有限公司 | Foam warm mixing recycled asphalt mixture, preparation method and performance evaluation method |
| CN105421181A (en) * | 2015-12-09 | 2016-03-23 | 段宝东 | ESA-13 in-place thermal regeneration bituminous mixture |
| CN107382149A (en) * | 2017-07-24 | 2017-11-24 | 张莹莹 | A kind of construction of the highway bituminous concrete and preparation method thereof |
| CN109574551A (en) * | 2019-01-28 | 2019-04-05 | 上海时申工贸有限公司 | A kind of environment-friendly type regeneration bituminous concrete and its preparation process |
| EP3467045A4 (en) * | 2016-05-23 | 2019-06-19 | Jiangsu Tiannuo Road Materials Technology Co., Ltd | Plant mix warm regenerated asphalt mixture and preparation method therefor |
| CN110982291A (en) * | 2019-12-23 | 2020-04-10 | 东北林业大学 | Emulsified asphalt for cold recycled asphalt and preparation method thereof |
| CN111693346A (en) * | 2020-06-15 | 2020-09-22 | 深圳市市政工程总公司 | Marshall test piece preparation method based on plant heat tracing recycled asphalt mixture |
| CN111892337A (en) * | 2020-08-06 | 2020-11-06 | 长沙理工大学 | A kind of magnetic powder modified asphalt mortar and preparation method thereof |
| CN113277775A (en) * | 2021-06-02 | 2021-08-20 | 扬州大学 | SMA-13 in-situ thermal regeneration asphalt mixture and preparation method thereof |
| CN116639912A (en) * | 2023-05-26 | 2023-08-25 | 武汉市政工程设计研究院有限责任公司 | Building solid waste reclaimed material asphalt brick and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654347A (en) * | 2009-08-07 | 2010-02-24 | 江苏省交通科学研究院股份有限公司 | Hot in-plant reclaimed asphalt mixture |
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2013
- 2013-06-07 CN CN201310224419.0A patent/CN103265229B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654347A (en) * | 2009-08-07 | 2010-02-24 | 江苏省交通科学研究院股份有限公司 | Hot in-plant reclaimed asphalt mixture |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103790093B (en) * | 2014-01-06 | 2017-02-01 | 徐州徐工筑路机械有限公司 | Feeding and blending technology and feeding and blending device for cold recycling of emulsified asphalt factory |
| CN103790093A (en) * | 2014-01-06 | 2014-05-14 | 徐州徐工筑路机械有限公司 | Feeding and blending technology and feeding and blending device for cold recycling of emulsified asphalt factory |
| CN104003656A (en) * | 2014-05-05 | 2014-08-27 | 广厦建设集团有限责任公司贵州分公司 | SMA mixture, and preparation method and application thereof |
| CN104003656B (en) * | 2014-05-05 | 2016-01-06 | 广厦建设集团有限责任公司贵州分公司 | A kind of SMA mixture and its preparation method and application |
| CN104119032A (en) * | 2014-07-03 | 2014-10-29 | 同济大学 | A regenerating method of an SBS asphalt mixture with a high RAP mixing amount |
| CN104119032B (en) * | 2014-07-03 | 2016-08-17 | 同济大学 | A kind of SBS asphalt regenerative method of high RAP volume |
| CN105271950A (en) * | 2015-11-30 | 2016-01-27 | 苏交科集团股份有限公司 | Foam warm mixing recycled asphalt mixture, preparation method and performance evaluation method |
| CN105421181A (en) * | 2015-12-09 | 2016-03-23 | 段宝东 | ESA-13 in-place thermal regeneration bituminous mixture |
| EP3467045A4 (en) * | 2016-05-23 | 2019-06-19 | Jiangsu Tiannuo Road Materials Technology Co., Ltd | Plant mix warm regenerated asphalt mixture and preparation method therefor |
| CN107382149A (en) * | 2017-07-24 | 2017-11-24 | 张莹莹 | A kind of construction of the highway bituminous concrete and preparation method thereof |
| CN107382149B (en) * | 2017-07-24 | 2018-03-23 | 张莹莹 | A kind of construction of the highway bituminous concrete and preparation method thereof |
| CN109574551A (en) * | 2019-01-28 | 2019-04-05 | 上海时申工贸有限公司 | A kind of environment-friendly type regeneration bituminous concrete and its preparation process |
| CN110982291A (en) * | 2019-12-23 | 2020-04-10 | 东北林业大学 | Emulsified asphalt for cold recycled asphalt and preparation method thereof |
| CN111693346A (en) * | 2020-06-15 | 2020-09-22 | 深圳市市政工程总公司 | Marshall test piece preparation method based on plant heat tracing recycled asphalt mixture |
| CN111892337A (en) * | 2020-08-06 | 2020-11-06 | 长沙理工大学 | A kind of magnetic powder modified asphalt mortar and preparation method thereof |
| CN113277775A (en) * | 2021-06-02 | 2021-08-20 | 扬州大学 | SMA-13 in-situ thermal regeneration asphalt mixture and preparation method thereof |
| CN116639912A (en) * | 2023-05-26 | 2023-08-25 | 武汉市政工程设计研究院有限责任公司 | Building solid waste reclaimed material asphalt brick and preparation method thereof |
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