CN103044935B - Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof - Google Patents
Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof Download PDFInfo
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- CN103044935B CN103044935B CN201310000216.3A CN201310000216A CN103044935B CN 103044935 B CN103044935 B CN 103044935B CN 201310000216 A CN201310000216 A CN 201310000216A CN 103044935 B CN103044935 B CN 103044935B
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Abstract
The invention discloses modified cold-stirred and cold-spread room temperature bitumen which comprises the following components by weight percentage: 60-80% of bitumen, 5-15% of rubber resin, 2-6% of activated carbon, 3-8% of a diluent, 4-10% of resin, 3-8% of an anti-stripping agent and 2-5% of a curing agent. The preparation method comprises the steps of heating bitumen to 80-100 DEG C, adding resin to bitumen, cooling to 70 DEG C, adding the diluent, stirring, controlling the temperature between 80 DEG and 90 DEG C, adding rubber powder, the anti-stripping agent and the activated carbon, stirring uniformly, finally adding the curing agent and stirring uniformly.
Description
Technical field
The invention belongs to Expressway Pavement Material field, be specifically related to cold mixing cold-application normal temperature pitch of a kind of modification and preparation method thereof.
Background technology
Driving comfort level is the basic demand of people's road pavement quality, and traditional cement concrete pavement snappiness is poor, damage is serious, maintenance is large.Bituminous pavement has good road-ability and excellent use properties, and construction speed is fast, easy to maintenance; Bituminous pavement can reduce noise, the dust pollution that driving causes simultaneously, has been widely used in urban road, motorway etc.
In China, what overwhelming majority bituminous pavement was used is hot-mix asphalt mixture, limitation due to hot-mix asphalt mixture self, brought a series of technical barriers to the construction of bituminous pavement: 1. hot-mix asphalt mixture requires pitch and aggregate to have higher temperature when mixing and stirring, therefore the production of hot-mix asphalt mixture is more special to mixing and stirring with the requirement of processing units, causes its manufacturing and processing equipment price generally higher; During 2. due to pavement construction, the temperature of asphalt is had to higher requirement equally, long distance transportation can not; 3. in temperature lower season, hot asphalt material is used difficulty, causes the road surface of damage to can not get repairing timely, the safety and comfort that directly impact is driven a vehicle and the work-ing life of road.
The exploitation of cold mixing cold-laid asphalt pavement technology will fundamentally improve these technical barriers that exist in hot asphalt technology.Meanwhile, along with the raising of living standards of the people, people are more and more higher to the requirement of urban air-quality, and cold mixing cold-laid asphalt pavement technology can not only in use reduce road surface airborne dust, can also in construction, reduce the pollution to atmospheric environment.But cold mixing cold-application material mostly relies on import, and it is expensive, and user is difficult to bear, cannot in engineering, use in a large number; Actively develop the research of cold mixing cold laid asphaltic compound compounding process, really have very important meaning.
The cold mixing cold laid asphaltic of modification at present generally refers to polymer modified asphalt, also a lot of for the type of polymer of modification.According to the difference of properties-correcting agent, generally be divided three classes: the one, thermoplastic elastomer class, it is mainly styrenic block copolymer, as styrene-butadiene one vinylbenzene (SBS), vinylbenzene one isoprene one vinylbenzene (SIS), vinylbenzene one polyethylene/butyl one polyethylene (segmented copolymer such as SE/SB, because it has the structure and properties of rubber and resin concurrently, therefore also referred to as rubber tree lipid).The 2nd, rubber-like, wherein using maximum is styrene-butadiene rubber(SBR) (SBR) and chloroprene rubber (CR).The 3rd, type thermoplastic resin, as polyethylene (PE), polypropylene, ethene one vinyl acetate copolymer (EVA) etc. were all employed in the modification of road bitumen.The common feature of this analog thermoplastic resin is heating post softening, and cure hard when cooling, so can obviously improve the high-temperature stability of asphaltic binder.Conventional cold mixing cold laid asphaltic properties-correcting agent is mainly SBS and SBR at present.
CN101555354 the invention discloses a kind of preparation method of Crumber rubber modified asphalt, comprise steps A: 8～12% SBS, 75～85% rubber powder, 7～13% PE are uniformly mixed, wherein, the weight percent sum of SBS, rubber powder, PE is 100%, in rubber powder, the content of waste Crumb rubber accounts for the more than 50% of total rubber powder, makes waste rubber composite modifier; Step B: first matrix pitch is heated to 150～165 ℃, then add waste rubber composite modifier to form asphalt, wherein, the content of waste rubber composite modifier accounts for 5～20% of total Crumber rubber modified asphalt, by high speed shear instrument, undertaken after high speed shear to asphalt is uniformly dispersed, adding stablizer, maintain the temperature at 160～180 ℃, and continue to shear 20～30 minutes, make Crumber rubber modified asphalt.This rubber modified bitumen is owing to adding SBS, and cost increases, and easily produces peeling phenomenon.
CN102786804 discloses a kind of polymer asphalt modifier that can mix and stir, pave, roll under the temperature condition of-10 ℃～60 ℃, contains weight part and be 25～50 component A and 75～50 component B; Described component A is mainly made by the raw material of following weight part: 15～30 parts of polyethylene, 15～30 parts of polypropylene, 5～10 parts of poly-propionic acid amide resins of methyl, 1～3 part of glycerol; Described B component is mainly made by the raw material of following weight part: 15～30 parts of Stockholm tars, 5～15 parts of coumarone indene resins, 3～7 parts of modified phenolic resinss, 35～65 parts of rubber powders.This modifying asphalt complicated process of preparation, cost is high.
The prior art of above-mentioned disclosure, comes with some shortcomings, as current conventional cold mixing cold laid asphaltic properties-correcting agent mainly be take SBS and SBR as main, and complicated process of preparation, cost is expensive; The prior art that the waste old of take is asphalt modifier is very complicated to the processing of rubber modified asphalt, and cost is high, or rubber content is higher, causes the adhesivity of pitch and fine aggregate to reduce, and antistripping is poor.
Summary of the invention
The object of the invention is to have obtained the more excellent modifying asphalt material of performance by cold mixing cold laid asphaltic formula is improved, its good springiness, preparation technology is simple, cost is low.
Modification cold mixing cold-application normal temperature pitch of the present invention comprises the component of following weight percent:
Pitch 60-80%
Rubber powder 5-15%
Activated carbon 2-6%
Diluent kerosene 3-8%
Gu Malong resin 4-10%
Antistripping agent 3-8%
Solidifying agent polyurethane 2-5%.
Described pitch is preferably 70-90 pitch, more preferably 70 or No. 90 pitches.
In a preferred embodiment, modification cold mixing cold-application normal temperature pitch of the present invention is comprised of the component of following weight percent:
No. 70 pitches 80%
Rubber powder 5%
Activated carbon 3%
Diluent kerosene 3%
Coumarone resin 4%
Antistripping agent 3%
Solidifying agent polyurethane 2%.
In a preferred embodiment, modification cold mixing cold-application normal temperature pitch of the present invention is comprised of the component of following weight percent:
No. 90 pitches 70%
Rubber powder 10%
Activated carbon 3%
Diluent kerosene 4%
Coumarone resin 6%
Antistripping agent 4%
Solidifying agent polyurethane 3%.
In another preferred embodiment, modification cold mixing cold-application normal temperature pitch of the present invention is comprised of the component of following weight percent:
No. 70 pitches 60%
Rubber powder 10%
Activated carbon 6%
Diluent kerosene 4%
Coumarone resin 7%
Antistripping agent 8%
Solidifying agent polyurethane 5%.
The invention described above modification cold mixing cold-application normal temperature pitch, described rubber powder is broken thin and obtain the method that its broken thin method is this area routine through waste tire rubber; Described antistripping agent is asphalt anti-stripping agent, can buy the TW-1 type asphalt anti-stripping agent that ，Ru Jiangsu Wenchang New Material Co., Ltd. produces by commercial sources.Described solidifying agent polyurethane can be polyurethane solidifying agent 115 or 125 types.
Another object of the present invention provides a kind of method of preparing modification cold mixing cold-application normal temperature pitch of the present invention, comprises the following steps:
1) by asphalt heating to 80～100 ℃, resin dissolves wherein,
2) temperature of step 1) is dropped to 80～90 ℃, adds thinner, rubber powder, activated carbon, antistripping agent to stir,
3) add solidifying agent, stirring and dissolving is even at normal temperatures.
Described in the inventive method, pitch is 70～No. 90 pitches, preferably 70 or No. 90 pitches; Described resin is coumarone resin; Described thinner is kerosene; Described solidifying agent is polyurethane.
Another object of the present invention provides a kind of asphalt of modification, comprises described modification cold mixing cold-application normal temperature pitch and fine aggregate, and described fine aggregate is rubble.
Modification cold mixing cold-application normal temperature pitch of the present invention is for the purposes of road surfacing or repairing.Be about to cold mixing cold laid asphaltic and mix with rubble at normal temperatures, under the temperature of-10～40 ℃, be laid on road surface or revise damaged bituminous sheaths.
Modification normal temperature pitch of the present invention meets JTGF40-2004 standard, and 50% of the 70%，Shi Korea S SK modifying asphalt material of cost Di，Shi U.S. SBS modifying asphalt material is more lower slightly than the cost of the hot spice of matrix pitch; Aspect high temperature and low-temperature performance, be also better than SBS and SBR modifying asphalt.Cold mixing cold-application modification normal temperature pitch preparation technology of the present invention is simple, good stability.Modifying asphalt of the present invention, it solidifies is to occur under field conditions (factors), and intermediate formation one deck is solid interlayer never, its role is to prevent that pitch from chapping, extend the ageing of asphalt time and keep higher rebound resilience, reaching the effect of noise reduction, shock resistance, antifatigue.So this pitch is sealed up for safekeeping and do not emanated for 2 two years, rebound resilience is good, plasticity is high, adhesivity is strong, road surface is not chapped, do not turned over oil at 80 ℃ of high temperature at-40 ℃, higher wear resistance and resistance to deterioration are not removed, had to car.Can be under the temperature of-10～40 ℃ road surface pavement, can the damaged bituminous pavement of round-the-clock repairing, be not subject to the impact of weather and temperature; Can machinery paving also can Manual, while mixing with fine aggregate without heating, energy-saving and environmental protection.
Embodiment
Following examples are explained the present invention for further, but do not limit the scope of the invention.
The formula of embodiment and comparative example is as following table (weight percent):
Formula table
Preparation method: by the recipe ratio of upper table, by asphalt heating to 80～100 ℃, resin dissolves wherein, temperature drops to 80～90 ℃, add thinner, rubber powder (SBR or SBS), activated carbon, antistripping agent to stir, then add solidifying agent, stirring and dissolving is even at normal temperatures.
By embodiment 1～4 and comparative example 1～2 modifying asphalt and fine aggregate be mixed into compound for laying road road surface or repair road.
embodiment 5performance test comparison
The performance of the asphalt material of the asphalt material of test implementation example 1～4 and comparative example 1～2, as the impact of high-temperature behavior, low-temperature performance, the easy property of construction, segregability, environment, energy consumption etc.Testing method is this area ordinary method.The pitch of embodiment and comparative example and fine aggregate being mixed to form to compound, according to the sub-testing regulation of JTG E-20-2011[highway engineering pitch and asphalt] performance measurement experiment carries out performance test.The results are shown in following table 1:
Table 1 the performance test results
| Performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 |
| High-temperature behavior | Excellent | Excellent | Excellent | Excellent | Poor | Good |
| High-temperature behavior | Excellent | Excellent | Excellent | Excellent | Good | Good |
| Easy act | Excellent | Excellent | Excellent | Excellent | Poor | Poor |
| Whether emanate | No | No | No | No | Be | Be |
| Environmental influence | Nothing | Nothing | Nothing | Nothing | Nothing | Nothing |
| Energy consumption height | Low | Low | Low | Low | High | High |
embodiment 6marshall stability test
According to the sub-testing regulation of JTG E-20-2011[highway engineering pitch and asphalt] Marshall stability test of the compound of the asphalt material of test implementation example 1～4 and the asphalt material of comparative example 1～2, at the temperature that keeps stipulating at compound, constant temperature is 12 hours, measure stability, result is as following table 2:
Table 2: stability test result (unit K N)
The data of table 2 show that the stability of modification normal temperature pitch of the present invention is better than or is equal to SBS or SBR modifying asphalt.
embodiment 7technical indicator
According to the sub-testing regulation of JTG E-20-2011[highway engineering pitch and asphalt] regulation measure the parameters such as penetration degree, penetrative index, ductility, recovery of elasticity, softening temperature, kinematic viscosity.Data are as following table:
Table 3 technical indicator
| Performance | Penetration degree (25 ℃, 100g5s) 0.1mm | Penetrative index is not less than | 15 ℃ of ductility 5cm/min | Softening temperature ℃ | 25 ℃ of recovery of elasticity | Kinematic viscosity Pa.s |
| Embodiment 1 | 60 | 0.23 | 50 | 56 | 75 | 2.5 |
| Embodiment 2 | 86 | -0.20 | 55 | 57 | 60 | 1.8 |
| Embodiment 3 | 62 | ?0.20 | 40 | 53 | 70 | 2.3 |
| Embodiment 4 | 76 | -0.10 | 60 | 60 | 78 | 2.0 |
| Comparative example 1 | 62 | -0.30 | 35 | 50 | 65 | 2.0 |
| Comparative example 2 | 63 | -0.52 | 38 | 54 | 58 | 1.8 |
| No. 70 pitches | 64 | -0.88 | 150 | 49 | - | - |
| No. 90 pitches | 93 | -1.23 | 128.3 | 45.5 | - | - |
| Testing method | T0604 | T0604 | T0605 | T0606 | T0662 | T0625 |
The data of table 3 show that modification normal temperature pitch of the present invention meets the requirement of JTGF40-2004 standard, particularly to show that ductility in low temperature properties is made properties-correcting agent pitch than SBS or SBR good, to show that penetration degree in high-temperature behavior and softening temperature are also made the pitch of properties-correcting agent than SBS or SBR good.
Claims (8)
1. a cold mixing cold laid asphaltic material for modification, the component that comprises following weight percent:
Wherein, described pitch is 70-90 pitch.
2. asphalt material as claimed in claim 1, described pitch is No. 70 or No. 90 pitches.
3. asphalt material as claimed in claim 1, is comprised of the component of following weight percent:
No. 70 pitch 80%, rubber powder 5%, activated carbon 3%, kerosene 3%, Gu Malong resin 4%, antistripping agent 3%, solidifying agent polyurethane 2%.
4. asphalt material as claimed in claim 1, is comprised of the component of following weight percent:
No. 90 pitch 70%, rubber powder 10%, activated carbon 3%, kerosene 4%, Gu Malong resin 6%, antistripping agent 4%, solidifying agent polyurethane 3%.
5. asphalt material as claimed in claim 1, is comprised of the component of following weight percent:
No. 70 pitch 60%, rubber powder 10%, activated carbon 6%, kerosene 4%, Gu Malong resin 7%, antistripping agent 8%, solidifying agent polyurethane 5%.
6. a method of preparing the asphalt material of claim 1, comprise: asphalt heating is arrived to 80-100 ℃, coumarone resin dissolves in wherein, its temperature drops to 80 ℃～90 ℃, add thinner, rubber powder, activated carbon, antistripping agent to stir, add at normal temperatures solidifying agent polyurethane stirring and dissolving even.
7. method as claimed in claim 6, described pitch is 70 or No. 90 pitches.
8. an asphalt for modification, comprises claim 1～5 arbitrary described cold mixing cold laid asphaltic material and fine aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310000216.3A CN103044935B (en) | 2013-01-04 | 2013-01-04 | Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof |
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| CN201310000216.3A CN103044935B (en) | 2013-01-04 | 2013-01-04 | Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof |
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| CN103044935B true CN103044935B (en) | 2014-03-05 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104479373A (en) * | 2014-11-30 | 2015-04-01 | 梁子兰 | Anti-stripping road asphalt and preparation method thereof |
| CN107236313A (en) * | 2017-07-26 | 2017-10-10 | 广东华路交通科技有限公司 | A kind of asphaltic liquid repaired for asphalt pavement crack and preparation method thereof |
| CN109422483A (en) * | 2017-08-25 | 2019-03-05 | 山东路联交通材料有限公司 | A kind of road cracking repair materials and construction method |
| CN109423059A (en) * | 2017-08-30 | 2019-03-05 | 罗雪洁 | A kind of asphalt pavement material major ingredient is at being grouped as |
| CN108342091B (en) * | 2018-02-05 | 2020-08-04 | 山东省交通科学研究院 | Cold-mixed asphalt and cold-mixed overlay mixture based on waste asphalt pavement material |
| CN111004516A (en) * | 2019-12-23 | 2020-04-14 | 四川氟瑞物联科技有限公司 | Preparation method of self-repairing cold-mix modified asphalt |
| CN111019367A (en) * | 2019-12-23 | 2020-04-17 | 四川氟瑞物联科技有限公司 | Asphalt cold mixing agent |
| CN112111164A (en) * | 2020-08-26 | 2020-12-22 | 盐城工学院 | Method for refining asphalt for road construction |
| CN112897937B (en) * | 2021-02-01 | 2022-04-19 | 西安建筑科技大学 | Composite modified cold-patch asphalt mixture and preparation method thereof |
| CN113150568A (en) * | 2021-04-07 | 2021-07-23 | 重庆畅鑫路面建筑材料有限公司 | Modified cold-mixed cold-paved normal-temperature asphalt and preparation method thereof |
| CN115286927A (en) * | 2021-12-20 | 2022-11-04 | 长沙理工大学 | Preparation method and application of medium-temperature-cured modified asphalt |
| CN115180876B (en) * | 2022-07-05 | 2023-07-18 | 新乡市通达公路新科技有限公司 | Cold mix agent for repairing pit |
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| KR20110026038A (en) * | 2009-09-07 | 2011-03-15 | 허정도 | Temperature-controlled modified recycling mixes for reuse of 100% rap in road pavements and manufacturing methods thereof |
| CN102329103A (en) * | 2010-07-13 | 2012-01-25 | 上海道柯特沥青科技有限公司 | Hot-mix cold-lay rubber asphalt mixture |
| CN102408602A (en) * | 2011-07-27 | 2012-04-11 | 上海浦东路桥建设股份有限公司 | Direct-feeding type asphalt warm-mix modifier as well as preparation method and application thereof |
| CN102417736A (en) * | 2011-11-18 | 2012-04-18 | 武汉科技大学 | Waste rubber powder modified asphalt and preparation method thereof |
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2013
- 2013-01-04 CN CN201310000216.3A patent/CN103044935B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554708A (en) * | 2003-12-28 | 2004-12-15 | 大连市政设施修建总公司材料综合加工 | Method for preparing cold stirring cold laying road asphalt |
| KR20110026038A (en) * | 2009-09-07 | 2011-03-15 | 허정도 | Temperature-controlled modified recycling mixes for reuse of 100% rap in road pavements and manufacturing methods thereof |
| CN102329103A (en) * | 2010-07-13 | 2012-01-25 | 上海道柯特沥青科技有限公司 | Hot-mix cold-lay rubber asphalt mixture |
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| CN102417736A (en) * | 2011-11-18 | 2012-04-18 | 武汉科技大学 | Waste rubber powder modified asphalt and preparation method thereof |
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Effective date of registration: 20160714 Address after: 402371 Chongqing City Economic Development Zone Town Dongsheng Youting Shuangqiao Village Group Patentee after: Chongqing Changxin road construction material Co., Ltd. Address before: The 5 group of Dazu County, Chongqing City, long town Huanglong village 402368 Patentee before: Chen Yonghong Patentee before: Zhao Yanming Patentee before: Jiang Changyou Patentee before: Duan Shaoxuan |
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