CN103773011B - A kind of bitumen regenerant and preparation method thereof - Google Patents
A kind of bitumen regenerant and preparation method thereof Download PDFInfo
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- CN103773011B CN103773011B CN201210411170.XA CN201210411170A CN103773011B CN 103773011 B CN103773011 B CN 103773011B CN 201210411170 A CN201210411170 A CN 201210411170A CN 103773011 B CN103773011 B CN 103773011B
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Abstract
The invention discloses a kind of bitumen regenerant and preparation method thereof, bitumen regenerant comprises by weight percentage: heavy oil 30wt%-50wt%, catalytically cracked oil 40wt%-65wt%, polymkeric substance 1wt%-5wt%, properties-correcting agent 1wt%-5wt%.Preparation method is for join in 130-150 DEG C of heavy oil by catalytically cracked oil, and stirring at low speed 0.5-1 hour, then add polymkeric substance and properties-correcting agent, high speed shear 0.5-1 hour, is cooled to room temperature, obtains bitumen regenerant.Bitumen regenerant of the present invention can obviously improve asphalt high-temperature and low-temperature performance, and preparation method is simple, and cost is low.
Description
Technical field
The present invention relates to a kind of bitumen regenerant and preparation method thereof.
Background technology
In the past in 50 years, countries in the world infrastructure construction particularly Road construction all achieves beyond example development.And this wherein quite a few bituminous pavement close to or reach life, need increase maintenance drop into, to maintain the due traffic capacity of these roads and security.In addition, repair on old road or in process of reconstruction, a large amount of waste and old ground surface material will be produced, and then cause three large problems: one is stack place; Two is contaminate environment; Three is waste a large amount of Nonrenewable resources.Therefore, waste asphalt pavement regeneration is day by day urgent.Asphalt-regenerating is exactly in aging pitch, add regenerator to recover the process of its pavement performance, and the key of this technology is to develop suitable regenerator, to recover every use properties of waste asphalt.The waste asphalt reclaiming agent normally lightweight oil that China used at the beginning of the eighties in last century, as lubricating oil, diesel oil, machine oil or their mixture.Because lightweight oil divides highly volatile, less stable regeneration effect is unsatisfactory.
Document (Jiangsu transport science and techonologies, 2001, Vol.5:8-10) utilizes 1,3-butadiene and acrylate for Material synthesis tackifying resin is as bitumen regenerant.Tackifying resin add the effect playing fixing lightweight oil content, make lightweight oil content miscible with it and form stable macromolecular solution with aged asphalt agglutinate, overcoming the volatile shortcoming of light oil.But the synthesis of tackifying resin needs special equipment and technology, and cost is higher, limit the commercial applications of its mass-producing.
US5578663 discloses one and comprises elastomeric asphalt pavement regeneration agent and preparation method.But the preparation method of this patent regenerator needs the aromatic solvent adding 20wt-30wt%, because the arene compounds boiling point added is low, in use there is safety problem, all have detrimentally affect to the health of environment and people.
CN101255245A discloses a kind of road bitumen regenerative agent, mainly with the vulcanization of rubber component of the heavy mineral oil of the devulcanized rubber powder of 50wt% ~ 100wt%, 0wt% ~ 50wt% and 0wt% ~ 10wt% for raw material, within 0.5 ~ 3 hour, obtain at 30 ~ 200 DEG C of mix and blends.Solve the bituminous matter dispersion segregation of high-content in rubber powder and aged asphalt and make the problem that its road performance declines.The preparation of devulcanized rubber powder involved in this technique needs special equipment, and rubber powder swelling time is long, is unfavorable for large-scale production.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of bitumen regenerant and preparation method thereof.Bitumen regenerant of the present invention can obviously improve asphalt high-temperature and low-temperature performance, and preparation method is simple, and cost is low.
A kind of bitumen regenerant, comprises by weight percentage:
(1) heavy oil 30wt%-50wt%
(2) catalytically cracked oil 40wt%-65wt%
(3) polymkeric substance 1wt%-5wt%
(4) properties-correcting agent 1wt%-5wt%.
Can be wherein long residuum, vacuum residuum or both mixtures in heavy oil, in heavy oil, saturated sub-prime amount content be 15%-25%.
Wherein in catalytically cracked oil, fragrance point mass content is 50%-60%.
Wherein polymkeric substance is the mixture of one or more in styrene-butadiene rubber(SBR) (SBR), natural rubber (NR), chloroprene rubber (CR), divinyl rubber (BR) or ethylene-propylene rubber(EPR) (EPDM).
Wherein properties-correcting agent is one or more in ortho-phosphoric acid, Tripyrophosphoric acid, polyphosphoric acid or polyphosphoric acid amine.
In bitumen regenerant of the present invention, other additive can also be added, as additives such as antiaging agent, stablizer, antistripping agents according to the requirement of application.
The preparation method of a kind of bitumen regenerant of the present invention is as follows: joined by catalytically cracked oil in 130-150 DEG C of heavy oil, stirring at low speed 0.5-1 hour, then add polymkeric substance and properties-correcting agent, high speed shear 0.5-1 hour, be cooled to room temperature, obtain waste asphalt reclaiming agent.
The rotating speed of the stirring at low speed described in the inventive method is less than 1200 revs/min, and the rotating speed of high speed shear is 3000 ~ 4000 revs/min.Wherein shearing the equipment used is shears or colloidal mill etc.
Bitumen regenerant of the present invention both can heat be mixed and made into regeneration asphalt with the road bitumen reclaimed, also can directly and other road bitumen be mixed and made into modifying asphalt.
Compared with prior art, the invention has the advantages that:
In regenerator of the present invention heavy oil and catalytically cracked oil add the compatibleness can improved between aged asphalt Four composition, recover its colloidal structure.After adding rubber polymer, the ductility of pitch can be improved, thus obviously improve pitch crack resistance at low-temperature.The properties-correcting agent adopted, as polyphosphoric acid, by changing the structure type of pitch, thus improves the high-temperature behavior of pitch significantly.The cost of bitumen regenerant of the present invention is low, and preparation technology is simple, waste material is reused, reduces the pollution to environment.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but therefore do not limit the present invention.
Embodiment 1
First catalytically cracked oil (fragrance is divided into 52%) is joined in 135 DEG C of vacuum residuum (saturated be divided into 18%), stirring at low speed 0.5 hour, then adds styrene-butadiene rubber(SBR) (SBR) and polyphosphoric acid (purity 84%), high speed shear 0.5 hour, be cooled to normal temperature, obtain bitumen regenerant.Wherein each component concentration is by weight percentage: vacuum residuum 35%, catalytically cracked oil 60%, SBR3%, polyphosphoric acid 2%.
By weight percentage the AH-70 aged asphalt of the bitumen regenerant of 15% and 85% is stirred and obtains regeneration asphalt in 1 hour at 150 DEG C.Aged asphalt and regeneration asphalt index are in table 1.
Table 1 aged asphalt and regeneration asphalt index.
| Project | Aged asphalt | Regeneration asphalt |
| Penetration degree (25 DEG C)/0.1mm | 38 | 70 |
| Ductility (10 DEG C)/cm | 10 | 120 |
| Softening temperature/DEG C | 65 | 47 |
Embodiment 2
First catalytically cracked oil (fragrance is divided into 55%) is joined in 135 DEG C of long residuums (saturated be divided into 25%), stirring at low speed 0.5 hour, then adds chloroprene rubber (CR) and polyphosphoric acid (purity 84%), high speed shear 0.5 hour, be cooled to normal temperature, obtain bitumen regenerant.Wherein each component concentration is by weight percentage: long residuum 40%, catalytically cracked oil 55%, CR2%, polyphosphoric acid 3%.
By weight percentage the AH-70 aged asphalt of the bitumen regenerant of 10% and 90% is stirred and obtains regeneration asphalt in 1 hour at 150 DEG C.Aged asphalt and regeneration asphalt index are in table 2.
Table 2 aged asphalt and regeneration asphalt index.
| Project | Waste asphalt | Regeneration asphalt |
| Penetration degree (25 DEG C)/0.1mm | 43 | 73 |
| Ductility (10 DEG C)/cm | 5 | 112 |
| Softening temperature/DEG C | 56 | 48 |
Embodiment 3
First catalytically cracked oil (fragrance is divided into 55%) is joined in 145 DEG C of vacuum residuum (saturated be divided into 20%), stirring at low speed 1 hour, then adds styrene-butadiene rubber(SBR) (SBR) and Tripyrophosphoric acid (purity 84%), high speed shear 1 hour, be cooled to normal temperature, obtain bitumen regenerant.Wherein each component concentration is by weight percentage: vacuum residuum 45%, catalytically cracked oil 48%, SBR4%, Tripyrophosphoric acid 4%.
By weight percentage the AH-90 aged asphalt of the regenerator of 15% and 85% is stirred and obtains regeneration asphalt in 1 hour at 150 DEG C.Aged asphalt and regeneration asphalt index are in table 3.
Table 3 aged asphalt and regeneration asphalt index.
| Project | Aged asphalt | Regeneration asphalt |
| Penetration degree (25 DEG C)/0.1mm | 50 | 92 |
| Ductility (10 DEG C)/cm | 12 | 130 |
| Softening temperature/DEG C | 67 | 50 |
Comparative example 1
According to method and the proportioning of embodiment 1, do not use polyphosphoric acid, SBR is 5%, and aged asphalt and regeneration asphalt index are in table 4.
Table 4 aged asphalt and regeneration asphalt index.
| Project | Aged asphalt | Regeneration asphalt |
| Penetration degree (25 DEG C)/0.1mm | 38 | 94 |
| Ductility (10 DEG C)/cm | 10 | 135 |
| Softening temperature/DEG C | 65 | 42 |
As can be seen from the table, properties-correcting agent (as polyphosphoric acid) and the composite use of rubber type compounds, softening temperature raises, and ductility increases, and makes the pitch after regeneration have good high temperature performance.
Claims (6)
1. a bitumen regenerant, is characterized in that comprising by weight percentage:
(1) heavy oil 30wt%-50wt%
(2) catalytically cracked oil 40wt%-65wt%
(3) polymkeric substance 1wt%-5wt%
(4) properties-correcting agent 1wt%-5wt%; Properties-correcting agent is one or more in ortho-phosphoric acid, Tripyrophosphoric acid, polyphosphoric acid or polyphosphoric acid amine.
2. bitumen regenerant according to claim 1, is characterized in that: heavy oil is long residuum, vacuum residuum or both mixtures, and in heavy oil, saturated sub-prime amount content is 15%-25%.
3. bitumen regenerant according to claim 1, is characterized in that: in catalytically cracked oil, fragrance point mass content is 50%-60%.
4. bitumen regenerant according to claim 1, is characterized in that: polymkeric substance is the mixture of one or more in styrene-butadiene rubber(SBR), natural rubber, chloroprene rubber, divinyl rubber or ethylene-propylene rubber(EPR).
5. a preparation method for bitumen regenerant according to claim 1, process is as follows: joined by catalytically cracked oil in 130-150 DEG C of heavy oil, stirring at low speed 0.5-1 hour, add polymkeric substance and properties-correcting agent again, high speed shear 0.5-1 hour, is cooled to room temperature, obtains bitumen regenerant.
6. preparation method according to claim 5, is characterized in that: the rotating speed of stirring at low speed is less than 1200 revs/min, and the rotating speed of high speed shear is 3000 ~ 4000 revs/min.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147253B (en) * | 2015-04-20 | 2018-10-12 | 中国石油化工股份有限公司 | A kind of regeneration asphalt and preparation method thereof |
| CN108059970B (en) * | 2016-11-09 | 2020-03-17 | 中国石油化工股份有限公司 | Method for utilizing catalytic slurry oil |
| CN108070266B (en) * | 2016-11-09 | 2020-03-17 | 中国石油化工股份有限公司 | Modified catalytic slurry oil and method for preparing road asphalt by using same |
| CN107603252A (en) * | 2017-10-24 | 2018-01-19 | 内蒙古综合交通科学研究院有限责任公司 | Cost of New Type Asphalt Pavement regeneration regenerative agent and preparation method thereof |
| CN108587204A (en) * | 2018-05-14 | 2018-09-28 | 重庆路维康交通科技有限公司 | A kind of the warm mix regenerative agent and its preparation and application of asphalt |
| CN109486218A (en) * | 2018-10-09 | 2019-03-19 | 中国石油化工股份有限公司 | Agent and preparation method thereof is prolonged in a kind of increasing of low grade road asphalt |
| CN110885564B (en) * | 2019-12-05 | 2022-06-17 | 邓棋文 | Hot-recycling asphalt mixture recycling agent |
| CN114426777A (en) * | 2020-10-10 | 2022-05-03 | 中国石油化工股份有限公司 | Hot-mixed asphalt regenerant and preparation method and application thereof |
| CN114656793A (en) * | 2022-02-28 | 2022-06-24 | 甘肃省交通科学研究院集团有限公司 | PPA (polyphthalamide) -based compounded high-toughness SBS (styrene butadiene styrene) modified asphalt regenerant and preparation method thereof |
| CN115637052B (en) * | 2022-08-16 | 2023-08-04 | 招商局重庆交通科研设计院有限公司 | Warm-mixing regenerant for in-situ thermal regeneration and preparation method thereof |
| CN117466563B (en) * | 2023-12-28 | 2024-03-19 | 水润天府新材料有限公司 | Process for producing recyclable asphalt mixture with added waste rubber |
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| CN1289801A (en) * | 1999-09-29 | 2001-04-04 | 中国石油化工集团公司 | Process for preparing polymer-asphalt composition |
| CN1508188A (en) * | 2002-12-19 | 2004-06-30 | 中国石油化工股份有限公司 | Modified asphalt and preparing method thereof |
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