CN1068835A - Process for preparation of rubber powder and asphalt mixture - Google Patents
Process for preparation of rubber powder and asphalt mixture Download PDFInfo
- Publication number
- CN1068835A CN1068835A CN 91105180 CN91105180A CN1068835A CN 1068835 A CN1068835 A CN 1068835A CN 91105180 CN91105180 CN 91105180 CN 91105180 A CN91105180 A CN 91105180A CN 1068835 A CN1068835 A CN 1068835A
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- rubber powder
- asphalt
- mineral
- mix
- mixture
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- Road Paving Structures (AREA)
Abstract
A kind of rubber powder and asphalt is to compound preparation technology.Use rubber powder and plain asphalt and existing mixing apparatus, the method that provides by the application, make rubber powder and asphalt mixture, come the making high grade pavement with it, have good Pavement Performance, technology is simple, unique, easy to use, is beneficial to popularization, can save construction costs greatly, have very big economic benefit and social benefit.
Description
The invention belongs to the bituminous modification handles.
China has begun to build advanced road at present, but lacks the bituminous material of building advanced road.If, exist the road surface and feel like jelly with plain asphalt making high grade pavement, cracking and problem such as not durable.Some local cement concrete pavement of building, it is slow to have occurred pavement forming again, has easily worn away dirt, and noise is big, the joint treatment difficulty, road-ability difference and consumption are big, and problem such as involve great expense.Build the required bituminous material of advanced road in order to solve, petrochemical industry department has developed several high-quality asphalts, takes off No. 70 pitches etc. as third of Maoming.But also all in the experimental study stage, output is limited, can't satisfy the demand at present.The approach that another is dealt with problems manages to improve the bituminous performance exactly, makes it to be suitable for building advanced road.Utilizing rubber powder to improve the bituminous pavement performance is exactly one of them.General method with rubber powder modified asphalt is that elder generation is incorporated into mix in the pitch to rubber powder, forms rubber asphalt and sticks with paste, and becomes compound with the building stones mix again.There is more shortcoming in this method.Rubber powder is incorporated in the pitch, can absorb a large amount of lightweight oil contents, volumetric expansion, and denseness increases, and easily stops up oil pumping vehicle and send oil-piping and shower nozzle.Therefore, can't utilize existing pitch batching plant to mix the system compound.Rubber powder mixes in the pitch, needs to increase whipping device, also needs long churning time.Need under higher temperature, mix and join and use, cause pitch and rubber powder serious aging, reduce work-ing life.Consumption is restricted, and the maximum consumption of rubber powder has only 25% of asphalt content, is not suitable for mixing system special purpose such as dealings mouth, the compound of occasions such as parking lot.Because need in comparatively high temps and long period operation, pitch and rubber powder all discharge toxic gas, contaminate environment is hindered operator's health, and so on, so need exploitation a kind of newly improve the bituminous method with rubber powder, be convenient to actual use.
Purpose of the present invention just is, utilizes rubber powder to improve the pavement performance of plain asphalt compound, so that it is suitable for building advanced road, builds the problem of materials that advanced road is badly in need of thereby solve.
Main points of the present invention are, earlier rubber powder and mineral fine uniform mixing, then, directly go into to mix and stir the hot mineral aggregate in the cylinder together premixing from breeze storehouse admixture, add pitch again, and mix becomes rubber powder and asphalt mixture at last.
Pitch stores for future use by traditional method heating and dehydration, and the rubber powder consumption is generally 1%～5% of asphalt, and in this ratio, rubber powder and mineral fine mix, and are stored in the breeze logical sequence.Mixing equipment is with existing movable small coagulating cement soil mixing plant, when mixing and stirring rubber-asphalt mixture, earlier mineral aggregate is heated to 170 ℃～180 ℃ by traditional method, go into to mix and stir cylinder by the design proportion scale, then by mineral powder hoisting machine, in proportion the rubber powder mineral fine mixture that mixes, send in the mineral aggregate together 5～10 seconds of premixing again by design proportion, put into 140 ℃～160 ℃ heated bitumen, with 20～40 seconds of mixture mix of rubber powder mineral fine and mineral aggregate, just form rubber powder and asphalt mixture, can send into on-the-spot the use.
By the rubber powder and asphalt mixture of this prepared, the road surface of build has good performance.Compare with the road surface of building with No. 70 high-quality asphalts in Maoming, have remarkable advantages, comparative result is:
1. high-temperature stability has improved 32%.
2. cohesive bonding power has improved 47%.
3.0 °～the girder modulus of resilience under-40 ℃ reduces by 47%.
4.0 °～-20 ℃ shrinkage coefficient reduces by 8%.
5. grow 3.9 times the fatigue lifetime under 20 ℃ of 55% stress level.
6. the big 4-7 of frictional coefficient pendulum-type value.
7. with regard to building the road surface cost, also hang down 25.5%.
8. through five summers in winter with under the condition of 8000/day of mixed traffics, the test road does not have bellding and feels like jelly, and pushes diseases such as gathering around bag and cracking.
As mentioned above, prove absolutely and utilize homemade plain asphalt and rubber powder that the technology of using the application to provide obtains rubber powder and asphalt mixture, be used for building the road surface, improve high-temperature stability significantly, prevented base course reflection cracking and temperature draw effectively, improved travel safety, comfortableness, improved the wearing quality on road surface, and, use existing installation fully, need not to add separately equipment.Plain asphalt output is big, and rubber powder is a raw material with old tire, old rubber overshoes, wide material sources.Thus, this is simple for process, unique, easy to use, respond well, is convenient to promote, and will obtain very big economic benefit and social benefit.
Claims (2)
1, process for preparation of rubber powder and asphalt mixture.Utilize rubber powder and plain asphalt and existing mixing apparatus.Pitch stores for future use by traditional method heating and dehydration, and mineral aggregate is heated to 170 ℃～180 ℃ by traditional method.It is characterized in that, rubber powder and mineral fine mix, be stored in the breeze storehouse, mineral aggregate is gone into to mix and stir cylinder by the design proportion scale, then by mineral powder hoisting machine, by design proportion the rubber powder mineral fine mixture that mixes, send in the mineral aggregate 5～10 seconds of premixing, by design proportion, put into 140 ℃～160 ℃ heated bitumen again, with rubber powder mineral fine mineral aggregate mixture, 20～40 seconds of mix.
2,, it is characterized in that the rubber powder consumption is 1%～5% of an asphalt weight according to the described process for preparation of rubber powder and asphalt mixture of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91105180A CN1035009C (en) | 1991-07-24 | 1991-07-24 | Process for preparation of rubber powder and asphalt mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91105180A CN1035009C (en) | 1991-07-24 | 1991-07-24 | Process for preparation of rubber powder and asphalt mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1068835A true CN1068835A (en) | 1993-02-10 |
| CN1035009C CN1035009C (en) | 1997-05-28 |
Family
ID=4907027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91105180A Expired - Fee Related CN1035009C (en) | 1991-07-24 | 1991-07-24 | Process for preparation of rubber powder and asphalt mixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035009C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313566C (en) * | 2003-10-24 | 2007-05-02 | 中国石油化工股份有限公司 | Waste rubber powder modified asphalt and its prepn process |
| CN101143968B (en) * | 2006-09-15 | 2011-04-06 | 中国石油化工股份有限公司抚顺石油化工研究院 | Waste rubber powder modified asphalt composition for increasing storage stability and preparation method thereof |
| CN110540381A (en) * | 2018-05-29 | 2019-12-06 | 江苏一诺路桥工程检测有限公司 | asphalt mixture preparation method based on asphalt cement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4166049A (en) * | 1976-08-27 | 1979-08-28 | U.S. Rubber Reclaiming Co., Inc. | Process of producing a rubberized asphalt composition suitable for use in road and highway construction and repair and product |
| JPS5614557A (en) * | 1979-07-13 | 1981-02-12 | Tech Res & Dev Inst Of Japan Def Agency | Asphalt composite material containing rubber particle |
| JPS5854106B2 (en) * | 1979-08-31 | 1983-12-02 | カネボウエヌエスシ−株式会社 | Paving material composition |
| CN1037526A (en) * | 1988-04-28 | 1989-11-29 | 多斯托罗技术科学生产协会 | The method for preparing asphalt-rubber composite |
| JPH0313603A (en) * | 1989-06-12 | 1991-01-22 | Bridgestone Corp | Asphalt paving composite |
| JPH03177344A (en) * | 1989-12-04 | 1991-08-01 | Sato Doro Kk | Preparation of asphalt mixture containing rubber-compounded asphalt |
-
1991
- 1991-07-24 CN CN91105180A patent/CN1035009C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313566C (en) * | 2003-10-24 | 2007-05-02 | 中国石油化工股份有限公司 | Waste rubber powder modified asphalt and its prepn process |
| CN101143968B (en) * | 2006-09-15 | 2011-04-06 | 中国石油化工股份有限公司抚顺石油化工研究院 | Waste rubber powder modified asphalt composition for increasing storage stability and preparation method thereof |
| CN110540381A (en) * | 2018-05-29 | 2019-12-06 | 江苏一诺路桥工程检测有限公司 | asphalt mixture preparation method based on asphalt cement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035009C (en) | 1997-05-28 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |