CN102329103A - Hot-mix cold-lay rubber asphalt mixture - Google Patents
Hot-mix cold-lay rubber asphalt mixture Download PDFInfo
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- CN102329103A CN102329103A CN2010102256828A CN201010225682A CN102329103A CN 102329103 A CN102329103 A CN 102329103A CN 2010102256828 A CN2010102256828 A CN 2010102256828A CN 201010225682 A CN201010225682 A CN 201010225682A CN 102329103 A CN102329103 A CN 102329103A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides a hot-mix cold-lay rubber asphalt mixture. The mixture is characterized in that: the mixture comprises rubber asphalt and an aggregate; the aggregate comprises a coarse aggregate, a fine aggregate and ore powder; and the rubber asphalt comprises the following components, by weight, 1.5-10% of rubber powder, 5-15% of solvent naphtha, 0.1-5% of a silane coupling agent, 2-5% of a thermoplastic elastomer, and the balance petroleum asphalt. The silane coupling agent, which is added to rubber powder modified asphalt in the invention, allows a separation problem of the rubber powder and asphalt to be effectively solved. The obtained hot-mix cold-lay rubber powder modified asphalt mixture can keep a good loosened state for several months and all performances are stable in normal temperature conditions.
Description
Technical field
The present invention relates to a kind of hot-mix-cold-laid rubber-asphalt mixture and preparation method thereof, belong to building material field.
Background technology
Bituminous pavement loose, hole, hole can occur, disease such as peel off in secular use.Pavement disease has not only reduced the service ability on road surface, and mainly influences the road normal traffic, the hole, hole on super expressway even possibly cause traffic hazard.Therefore the hole, hole that occurs for the road surface, breakage need in time to repair.
At present pavement construction mostly adopts hot-mix asphalt mixture, produce, higher to temperature requirement during construction, and open to traffic immediately after the construction, product can not be reused, and environment is very big to construction infection.The hot-mix-cold-laid asphalt is different from common hot-mix asphalt mixture, and it is in advance that the asphalt premixing is good, and being packed in bag stores, and when the hole, hole on finding the road surface, occurring, transports to the scene at any time, carries out pavement patching.Owing to be stored in the warehouse at ordinary times, pave at normal temperatures and compacting during use, thereby this material is referred to as storage type cold laid asphaltic compound.Domestic some hot-mix-cold-laid rubber-asphalt mixtures that occurred; Like Hong Kong " it is logical that peace is mended the road admittedly " and homemade " section is peaceful " cold-application rubber-asphalt mixture; But adopt the road face after these compound reparations often can only keep the very short time and damage again; Particularly only can keep 1～2 hour, and the use properties of reparation road face can't get a desired effect in the rainy day.
Chinese patent 200510000487 discloses hole, a kind of road surface groove cold mixing patching material SBS asphaltic liquid; Process by following materials of weight proportions: the diesel oil of 7-10%, the terepthaloyl moietie of 4-5%, the gasoline of 8-10%; The SBS of 6-8%; The inhibitor of 5-10%, the antistripping agent of 0.3-0.4%, surplus is a pitch.Chinese patent 200710044201 discloses a kind of hot-mix-cold-laid road face and has repaired asphalt; This asphalt is by SBS modifying asphalt, additive and gather materials and form, and wherein, additive comprises thinner, petroleum resin and antistripping agent; Gather materials and comprise coarse aggregate, fine aggregate and breeze; During obtaining liq pitch, be benchmark with the weight of SBS modifying asphalt, the thinner weight percent is 14%-22%; The petroleum resin weight percent is 1.8-2.2%, and the antistripping agent weight percent is 0.4%-0.6%.Above-mentioned asphalt is in sponginess, compactibility, initial strength, workability, and the intensity of compound, anti-water damage property all show good after the moulding.But all there is expensive problem in the SBS modifying asphalt, and the modified technique more complicated; And use waste rubber powder as properties-correcting agent, can make its performance index can reach the standard of SBS modifying asphalt, even its low-temperature cracking-resistance, anti-skidding, wear resistance index surpass the SBS modifying asphalt.
Waste Crumb rubber is different from SBS (styrene-butadiene-styrene block copolymer), SBR (styrene-butadiene rubber(SBR)) etc.; Its composition is very complicated; Contain the polymkeric substance of carbon black, high-molecular weight hydrocarbons etc.; Be difficult to make the rubber powder particle can be evenly dispersed in the pitch, promptly pitch and rubber powder are difficult to form stable dispersion system.Therefore, adopt the pitch of waste Crumb rubber modification all is to join existing usefulness in the production scene at present.And bibliographical information is not seen in the application that the pitch of waste Crumb rubber modification is used for the hot-mix-cold-laid asphalt as yet.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of hot-mix-cold-laid rubber powder modified asphalt compound of storage-stable is provided.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of hot-mix-cold-laid rubber-asphalt mixture is characterized in that, is made up of with gathering materials rubber asphalt; Said gathering materials comprises coarse aggregate, fine aggregate and breeze; Said rubber asphalt comprises the rubber powder of the component of following weight percentage: 1.5-10%, the solvent oil of 5-15%, the silane coupling agent of 0.1-5%, the thermoplastic elastomer of 2-5%, and surplus is a petroleum pitch.
Described rubber powder is a waste and used rubber tyre levigated rubber powder, the powder that the junked tire that constitutes like tree elastomer, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber or polyisoprene rubber makes through pulverizing, and preferably its fineness is the 20-100 order.
Described solvent oil is a medium-boiling solvent oil, and like rubber solvent naphtha, boiling range is 80-120 ℃.
Described silane coupling agent is by trichlorosilane (HSiCl
3) and have unsaturated olefin addition under the catalysis of platinum chloric acid of reactive group, get through alcoholysis again.Its model is like KH550, KH560, KH570, KH792, DL602, DL171 etc.
Described thermoplastic elastomer (TPE) is through terephthalic acid, 1,4-butyleneglycol and gather the butanols copolymerization and form, and its hard section ratio increases can strengthen physics rigidity and chemicalstability, and soft section ratio increases can improve snappiness and low-temperature performance.The product of the KEYFLEX trade mark of producing like LG chemical company.
In addition, the present invention's over-all properties of also coming further to improve the rubber powder modified asphalt compound through the consumption of regulating the bitumen aggregate ratio ratio of the weight of gathering materials (rubber asphalt with), aggregate grading and breeze.
For improving the supporting capacity and the surfaceness of compound, coarse aggregate described in the present invention and fine aggregate are all selected grouan for use, and aggregate grading is: corresponding 100% percent of pass of 9.5mm sieve aperture; 4.75mm corresponding 86% percent of pass of sieve aperture; 2.36mm corresponding 73% percent of pass of sieve aperture, corresponding 52% percent of pass of 1.18mm sieve aperture, corresponding 34% percent of pass of 0.6mm sieve aperture; 0.3mm corresponding 22% percent of pass of sieve aperture; 0.15mm corresponding 17% percent of pass of sieve aperture, corresponding 11% percent of pass of 0.075mm sieve aperture, it is the weight percent of benchmark that above-mentioned per-cent is with the gross weight of gathering materials.
Said breeze is a particle diameter less than 0.074 millimeter mineral pellet, controls its weight and accounts for 1～3% of the gross weight of gathering materials, helps improving compound sponginess and intensity like this.
Asphalt content directly influences asphalt membrane thickness, and asphalt membrane thickness directly has influence on a series of performances such as the sponginess, compactibility, intensity, water stability of compound.When asphalt content more for a long time, the surface of aggregate asphalt membrane is thicker, free pitch is more, bonding easily each other, it is agglomerating that compound is prone to caking, also is difficult for after the conglomeration breaing up.When asphalt content more after a little while, be not enough to fully wrap surface of aggregate, bad adhesion between the aggregate particle rolls and can not make compound form integral body, the road surface occurs loose easily.Therefore, must strict control asphalt content.Through a large amount of tests, the present invention confirms that best bitumen aggregate ratio is 3.5-4.0%.
The present invention has solved rubber powder and bituminous segregation problem effectively through in the pitch of modifying rubber powder, adding silane coupling agent.Under normal temperature condition, the hot-mix-cold-laid rubber powder modified asphalt compound that is obtained can keep good rarefaction and each item stable performance in the time of some months.
Embodiment
Further set forth the present invention below in conjunction with embodiment.Should be understood that these embodiment only are used to explain the present invention, and unrestricted scope of the present invention.
One, material is selected
Waste Crumb rubber: make the 40-80 order by junked tire through pulverizing.
Solvent oil: rubber solvent naphtha, boiling range are 80-120 ℃.
Silane coupling agent: model is KH550.
Thermoplastic elastomer: BT-1047D.
Petroleum pitch: 70#-A level bi tumenf orr oad, ductility 164cm, 52.5 ℃ of softening temperatures, 295 ℃ of flash-points, penetration degree 79mm.
Two, grading limit: coarse aggregate and fine aggregate are all selected grouan for use, and grading limit is seen table 1.
The grating that table 1 gathers materials
| Size of mesh/mm | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Through percentage/% | 100 | 86 | 73 | 52 | 34 | 22 | 17 | 11 |
Three, proportioning raw materials:
Table 2 ratio of components
Four, process for preparation:
Waste Crumb rubber, solvent oil and silane coupling agent are mixed, be heated to 150-180 ℃ petroleum pitch then, and thermoplastic elastomer; And, can obtain eu-bitumen at 150-180 ℃ of following high speed shear 0.5-2h.
The general is thick, fine aggregate stirs and be heated to 110-120 ℃; By the accurate weighing aforesaid liquid of said bitumen aggregate ratio pitch with gather materials; Elder generation overstriking, fine aggregate stir, and add breeze again, mix and stir to even no grey material and get final product discharging.Stir after the discharging in good time, and be blown into freezing air make it the cooling, in order to avoid compound condenses into piece, pack when treating its temperature near normal temperature.
Five, performance test:
Measure penetration degree, softening temperature, ductility and 177 ℃ of kinematic viscosity of eu-bitumen according to the method for existing " highway engineering pitch and rubber-asphalt mixture testing regulation " (JTJ 052-2000) regulation, testing data is seen table 3.
Table 3 test result
Storge quality: the compound that embodiment 4 and Comparative Examples are obtained is packed into and is stored in the bag, measures its softening temperature behind the certain interval of time, and the result is following:
The variation of table 4 softening temperature
| Sequence number | Time | Embodiment 4 | Comparative Examples |
| 1 | 0d | 56.5 | 55 |
| 2 | 15d | 56.0 | 53.5 |
| 3 | 60h | 53.5 | 52 |
| 4 | 180d | 52.5 | 49.5 |
Can find out that from above-mentioned data after cold-application material provided by the present invention stored for some time, softening temperature changed steady relatively, and stable storing performance is preferably arranged.
Claims (7)
1. a hot-mix-cold-laid rubber-asphalt mixture is characterized in that, is made up of with gathering materials rubber asphalt; Said gathering materials comprises coarse aggregate, fine aggregate and breeze; Said rubber asphalt comprises the rubber powder of the component of following weight percentage: 1.5-10%, the solvent oil of 5-15%, the silane coupling agent of 0.1-5%, the thermoplastic elastomer of 2-5%, and surplus is a petroleum pitch.
2. hot-mix-cold-laid rubber-asphalt mixture as claimed in claim 1 is characterized in that, the fineness of described rubber powder is the 20-100 order.
3. hot-mix-cold-laid rubber-asphalt mixture as claimed in claim 1 is characterized in that, described solvent oil is a medium-boiling solvent oil, and boiling range is 80-120 ℃.
4. hot-mix-cold-laid rubber-asphalt mixture as claimed in claim 1 is characterized in that described silane coupling agent is selected from one or more among KH550, KH560, KH570, KH792, DL602 or the DL171.
5. like the described hot-mix-cold-laid rubber-asphalt mixture of arbitrary claim among the claim 1-4, it is characterized in that said coarse aggregate and fine aggregate are all selected grouan for use; Aggregate grading is: corresponding 100% percent of pass of 9.5mm sieve aperture, corresponding 86% percent of pass of 4.75mm sieve aperture, corresponding 73% percent of pass of 2.36mm sieve aperture; 1.18mm corresponding 52% percent of pass of sieve aperture; 0.6mm corresponding 34% percent of pass of sieve aperture, corresponding 22% percent of pass of 0.3mm sieve aperture, corresponding 17% percent of pass of 0.15mm sieve aperture; 0.075mm corresponding 11% percent of pass of sieve aperture, it is the weight percent of benchmark that above-mentioned per-cent is with the gross weight of gathering materials.
6. like the described hot-mix-cold-laid rubber-asphalt mixture of arbitrary claim among the claim 1-4, it is characterized in that said breeze is a particle diameter less than 0.074 millimeter mineral pellet, its weight accounts for 1～3% of the gross weight of gathering materials.
7. like the described hot-mix-cold-laid rubber-asphalt mixture of arbitrary claim among the claim 1-4, it is characterized in that said rubber asphalt is 4-5% with the ratio of the weight of gathering materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102256828A CN102329103A (en) | 2010-07-13 | 2010-07-13 | Hot-mix cold-lay rubber asphalt mixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102256828A CN102329103A (en) | 2010-07-13 | 2010-07-13 | Hot-mix cold-lay rubber asphalt mixture |
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| CN102329103A true CN102329103A (en) | 2012-01-25 |
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| CN2010102256828A Pending CN102329103A (en) | 2010-07-13 | 2010-07-13 | Hot-mix cold-lay rubber asphalt mixture |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796387A (en) * | 2012-09-03 | 2012-11-28 | 黄卫 | Epoxy glue powder asphalt material and preparation method thereof |
| CN103044935A (en) * | 2013-01-04 | 2013-04-17 | 陈永红 | Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof |
| CN103319906A (en) * | 2013-06-26 | 2013-09-25 | 北京同华道路养护有限责任公司 | Asphalt for ultrathin surface wearing layer and mixture and application thereof |
| CN103613943A (en) * | 2013-12-17 | 2014-03-05 | 海南大学 | Hot mix asphalt recycling agent as well as preparation method and application thereof |
| CN103708772A (en) * | 2013-12-10 | 2014-04-09 | 柳州博泽科技有限公司 | Preparation method of mixture of modified asphalt modified by applying petroleum asphalt |
| CN103951993A (en) * | 2014-05-06 | 2014-07-30 | 广西大学 | Method of using silane coupling agent as rubber asphalt stabilizer in microwave field |
| CN110643186A (en) * | 2019-09-18 | 2020-01-03 | 湖南鑫长胜材料科技有限公司 | Asphalt warm-mixing agent and application thereof |
| CN113698137A (en) * | 2021-09-16 | 2021-11-26 | 广西新发展交通集团有限公司 | Rubber asphalt, low-carbon rubber foamed asphalt, rubber asphalt mixture and preparation method thereof |
-
2010
- 2010-07-13 CN CN2010102256828A patent/CN102329103A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796387A (en) * | 2012-09-03 | 2012-11-28 | 黄卫 | Epoxy glue powder asphalt material and preparation method thereof |
| CN103044935A (en) * | 2013-01-04 | 2013-04-17 | 陈永红 | Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof |
| CN103044935B (en) * | 2013-01-04 | 2014-03-05 | 陈永红 | Modified cold-stirred and cold-spread room temperature bitumen and preparation method thereof |
| CN103319906A (en) * | 2013-06-26 | 2013-09-25 | 北京同华道路养护有限责任公司 | Asphalt for ultrathin surface wearing layer and mixture and application thereof |
| CN103708772A (en) * | 2013-12-10 | 2014-04-09 | 柳州博泽科技有限公司 | Preparation method of mixture of modified asphalt modified by applying petroleum asphalt |
| CN103613943A (en) * | 2013-12-17 | 2014-03-05 | 海南大学 | Hot mix asphalt recycling agent as well as preparation method and application thereof |
| CN103951993A (en) * | 2014-05-06 | 2014-07-30 | 广西大学 | Method of using silane coupling agent as rubber asphalt stabilizer in microwave field |
| CN103951993B (en) * | 2014-05-06 | 2016-08-17 | 广西大学 | In microwave field, silane coupler is as the method for rubber asphalt stabilizer |
| CN110643186A (en) * | 2019-09-18 | 2020-01-03 | 湖南鑫长胜材料科技有限公司 | Asphalt warm-mixing agent and application thereof |
| CN113698137A (en) * | 2021-09-16 | 2021-11-26 | 广西新发展交通集团有限公司 | Rubber asphalt, low-carbon rubber foamed asphalt, rubber asphalt mixture and preparation method thereof |
| CN113698137B (en) * | 2021-09-16 | 2022-12-09 | 广西新发展交通集团有限公司 | Rubber asphalt, low-carbon rubber foamed asphalt, rubber asphalt mixture and preparation method thereof |
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Application publication date: 20120125 |