CN101735625B - Special modified cold-mixing asphalt for cold-region normal-temperature mixing-type asphalt concrete - Google Patents
Special modified cold-mixing asphalt for cold-region normal-temperature mixing-type asphalt concrete Download PDFInfo
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- CN101735625B CN101735625B CN2009102515711A CN200910251571A CN101735625B CN 101735625 B CN101735625 B CN 101735625B CN 2009102515711 A CN2009102515711 A CN 2009102515711A CN 200910251571 A CN200910251571 A CN 200910251571A CN 101735625 B CN101735625 B CN 101735625B
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Abstract
The invention provides special modified cold-mixing asphalt for cold-region normal-temperature mixing-type asphalt concrete, which comprises linear liquid SBS, heavy traffic asphalt, surfactant, organic additives and water. The weight percentages of the components are: 50 to 70 percent of heavy traffic asphalt, 2.5 to 15 percent of linear liquid SBS, 1.2 to 11 percent of cationic surfactant, 3 to 6 percent of organic additives, and 20 to 30 percent of water. The water and the cationic surfactant are mixed pro rata and then are fully mixed through an emulsifier to form soap liquid; the heavy traffic asphalt is heated to between 100 and 170 DEG C; the soap liquid is heated to between 45 and 80 DEG C; the heavy traffic asphalt, the soap liquid, the linear liquid SBS and the organic additives are rapidly mixed in a mixing-melting device; and a uniform stable suspended substance is formed through a grinding machine, fully stirred, cooled to normal temperature and stored, thus the asphalt can be obtained. The problem that cold-mixing asphalt is too fast to demulsify, unstable in performance, short in storage time and poor in regional adaptability is solved. Evaporation residue of the asphalt mixture can greatly improve pavement performance. In addition, the asphalt has the advantages of simple process, stable performance and wide use.
Description
Technical field
The present invention relates to a kind of highway pavement and use cold-mix asphalt, relate in particular to the dedicated modified cold-mix asphalt of a kind of cold region normal-temperature mix type bituminous concrete.
Background technology
Highway pavement adopts pitch as the road surface gelling material in a large number.And pitch is at first wanted heating and melting as gelling material, and high class pavement is wanted modification processing, and simultaneously, gathering materials also to be heated to 200 ℃, carries out mix then, under keeping warm mode, through transporting, paving, roll, forms bituminous pavement.All processes need to consume a large amount of fuel, produce greenhouse gases.Simultaneously, engineering construction receives weather effect serious, and operation cooperates strict, and material use efficiency is lower, and waste is serious.Serious environment pollution and workmen's is healthy.
Chinese patent 200510000487.4 discloses a kind of road surface hole groove cold mixing patching material SBS asphaltic liquid and production technique thereof; Cold-mixing repairing material SBS pitch liquid for pit or slot of pitch road surface is processed 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.Its weak point is to adopt the SBS modified emulsifying asphalt to carry out cold mixing, only can be used for little table place, slurry seal, crushed stone sealing at present.Because of its breakdown of emulsion is very fast, compound can not be deposited, and its paving thickness all below 15 millimeters, can not form marshal piece, and this cold mixing technology can only be used for the maintenance of road.
Chinese patent 200310120877.6 discloses a kind of road with cold mixing cold laid asphaltic material; Be that (petroleum resin, coumarone resin (6.0～11.0%), frostproofer (terepthaloyl moietie, glycol ether 0.0～1.0%), thinner (diesel oil, aviation kerosene 13.0～30.0%) and setting accelerator (hexadecyl trimethylene triamine, triethylenediamine 0.0～0.5%) are processed with petroleum pitch (55.0～78.0%), urethane (2.0～4.0%), resin; 120 ℃ of dissolving resins of pitch heating; 70～80 ℃ add thinner, polyurethane, frostproofer, setting accelerator, and stirring forms.
The weak point of above-mentioned patent also has, and adopts the cold-mix asphalt of solvent method production owing to make and be used for a large amount of gasoline, diesel oil, kerosene, forms that intensity is slow, contaminate environment, cost be high, and gasoline, diesel oil etc. are the expensive energy.The concrete road that adopts this cold-mix asphalt to mix system is used poor performance, can not be used for high grade highway pavement, is only using in the road below three grades.
At present, existing modified emulsifying asphalt can not be with not reaching more than the 2cm with mix bituminous concrete or its pavement asphalt concrete paving thickness on the market.This problem needs to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide the dedicated modified cold-mix asphalt of a kind of cold region normal-temperature mix type bituminous concrete; Be used for substituting heated bitumen or heat modification pitch, solve that the cold-mix asphalt de-emulsification speed is too fast, unstable properties, waiting time are short, adapt to provincialism difference problem.Further aim of the present invention is to provide the preparation method of the dedicated modified cold-mix asphalt of a kind of cold region normal-temperature mix type bituminous concrete.This method technological process is simple, can realize quality control preferably in the preparation process, is fit to mass production.
The technical solution adopted for the present invention to solve the technical problems is: the dedicated modified cold-mix asphalt of a kind of cold region normal-temperature mix type bituminous concrete comprises line style liquid SBS, heavy traffic paving asphalt, tensio-active agent, organic additive and water; It is characterized in that: by weight percentage, heavy traffic paving asphalt: 50%～70%, the line style liquid SBS: 2.5%～15%, cats product: 1.2%～11%, organic additive: 3%～6%, water: 20%～30%.
The physical index of this cold-mix asphalt is: 5 ℃ of ductilities: greater than 50 centimetres.Softening temperature: greater than 70 ℃.Recovery of elasticity: greater than 75%.
Described heavy traffic paving asphalt is the petroleum pitch that meets JTG F40-2004 standard-required.
Described line style liquid SBS is a liquid state, and its solid content weight percent remains on 25%～50%.
Described cats product is selected from a kind of or wherein multiple mixture in alkylamide or imidazolines or alkyl propylene diamine class or aminated lignin class or the quaternary ammonium salt.
Described organic additive is selected from one or more mixtures in the fatty acid methyl ester ethoxy compound class.
Calcium ions and magnesium ions content is no more than 120mg in the described water.
A kind of method for preparing described modification cold-mix asphalt comprises the steps:
1), forms soap lye through the mulser thorough mixing with behind water and the cats product proportional mixing;
2) heavy traffic paving asphalt is heated to 100 ℃～170 ℃, above-mentioned soap lye is heated to 45 ℃～80 ℃; Heavy traffic paving asphalt, soap lye, line style liquid SBS and organic additive are mixed rapidly in the mixing device, and the shredder that passes through forms uniform and stable outstanding absurd creature, fully stirs, and is cooled to normal temperature storage and promptly gets.
Principle of the present invention is that the tensio-active agent in the cold-mix asphalt has solved forming a stable uniform mixture between water, properties-correcting agent and the pitch, makes water base group wrapped up by the pitch particulate.And organic additive is used to adjust the denseness of this uniform mixture, and is easy to use.Increase organic additive, then the mixture denseness reduces, and kinematic viscosity reduces, and is convenient to the internal friction angle of the cold-mix asphalt compound of pumping and adjustment, to adapt to different use temperatures.Properties-correcting agent is used to improve the pavement performance of mixture evaporation residue, as improving softening temperature, low-temperature ductility etc.
Beneficial effect of the present invention: the present invention test shows, because the present invention adopts rational component, especially the selection of emulsifying agent has solved that the cold-mix asphalt de-emulsification speed is too fast, unstable properties, waiting time are short, adapt to provincialism difference problem.Organic additive select the density technical problem that has also solved cold-mix asphalt for use.
The present invention has solved asphalt on using complete cold construction promptly in use need not heating, and is the same as the cement concrete construction.Simultaneously, its cold mixing concrete has quite long storageability (greater than 7 days).And owing to all produce at low temperatures, top temperature is no more than 100 ℃, so the aging of material alleviate greatly, and the effective rate of utilization of product performance and material is improved significantly.
Solve also that heated bitumen can not store, the engineering use properties is poor, use season short and using weather to want demanding problem.More having solved existing in the market modified emulsifying asphalt can not be with not reaching the problem more than the 2cm with mix bituminous concrete or its pavement asphalt concrete paving thickness.
Promptly adopt this emulsified bitumen at normal temperatures under the temperature of (10 ℃～40 ℃), need not the method for the heat temperature raising that gathers materials can be mixed to process and meet the bituminous concrete that JTG F40-2004 requires.This emulsified bitumen can be mixed system AC class, SMA class, OGFC class and ATB class, and its road surface thickness that paves can surpass more than the 2cm.Satisfy the requirement of the highway pavement of each grade.
Following examples further describe technique effect of the present invention; Be interpreted as these embodiment and only be used for the purpose of illustration; Do not limit the scope of the invention, conspicuous change and modification that while those of ordinary skills are made according to the present invention are also contained within the scope of the invention.
Embodiment
Major equipment comprises: mixing device, shredder, temperature control system, metering system.
Embodiment 1: the cold-mix asphalt preparation that a kind of Han Qu uses
Component: by weight percentage, heavy traffic paving asphalt: 70%, the line style liquid SBS: 5%, cats product (as stated): 10%, organic additive (as stated): 4%, water: 11%.
Preparing method: pitch is heated to 170 ℃; Water is heated to 45 ℃, mixes the back with cats product and grind the formation soap lye; The liquid line style properties-correcting agent of the pitch with 70% and 21% soap lye and 5% and 4% organic additive rapidly through grinding, leave in the transition jar and stirred 60 minutes in the mixing device after the mixing, squeeze into to be cooled to normal temperature in the finished product jar and to get final product.
Embodiment 2: the cold-mix asphalt preparation that a kind of Han Qu uses
Component: by weight percentage, heavy traffic paving asphalt: 60%, the line style liquid SBS: 5%, cats product: 10%, organic additive: 4%, water: 21%.
The preparation method: pitch is heated to 130 ℃, and soap lye is heated to 65 ℃.Pitch with 60% stablize suspension liquid with after the line style liquid modifying agent of 31% soap lye and 5% mixes through grinding to form in the mixing device, stirring is 60 minutes in the transition jar, deposits in the finished product jar, is cooled to normal temperature.
Embodiment 3: the cold-mix asphalt preparation that a kind of Han Qu uses
Component: by weight percentage, heavy traffic paving asphalt: 50%, the line style liquid SBS: 5%, cats product: 10%, organic additive: 4%, water: 31%.
The preparation method: pitch is heated to 100 ℃, and soap lye is heated to 50 ℃.The line style liquid modifying agent of the pitch with 50% and 41% soap lye and 5% joins in the mixing device simultaneously, grinds to get in the transition jar, stirs 60 minutes, gets in the finished product jar and is cooled to normal temperature.
Test detects: by the People's Republic of China's industry standard: T0605-1993, T0606-2000, T0662-2000, T0616-1993 standard among highway engineering pitch and the asphalt testing regulation JTJ 052-2000 detect, and the result is following:
| Test subject | 5 ℃ of ductilities | Softening temperature | Recovery of elasticity | Adhesivity |
| Embodiment 1 | 35 centimetres | 58℃ | 75％ | 5 grades |
| Embodiment 2 | 50 centimetres | 63℃ | 81％ | 5 grades |
| Embodiment 3 | 75 centimetres | 92℃ | 97％ | 5 grades |
The cold-mix asphalt that present method is made can use to the north of the Yellow River and in northwest, Qinghai-Tibet Platean season in spring and autumn and the part weather in winter.Avoided the pavement construction heating.
Claims (2)
1. the dedicated modified cold-mix asphalt of cold region normal-temperature mix type bituminous concrete comprises line style liquid SBS, heavy traffic paving asphalt, cats product, organic additive and water; It is characterized in that: by weight percentage, heavy traffic paving asphalt: 50%～70%, the line style liquid SBS: 2.5%～15%, cats product: 1.2%～11%, organic additive: 3%～6%, water: 20%～30%; Described heavy traffic paving asphalt is the petroleum pitch that meets JTG F40-2004 standard-required; Described line style liquid SBS is a liquid state, and its solid content weight percent remains on 25%～50%; Described cats product is selected from a kind of or wherein multiple mixture in alkylamide or imidazolines or aminated lignin class or the quaternary ammonium salt; Described organic additive is selected from one or more in the fatty acid methyl ester ethoxy compound class.
2. a method for preparing the dedicated modified cold-mix asphalt of cold region normal-temperature mix type bituminous concrete as claimed in claim 1 comprises the steps:
1), forms soap lye through the mulser thorough mixing with behind water and the cats product proportional mixing;
2) heavy traffic paving asphalt is heated to 100 ℃～170 ℃, above-mentioned soap lye is heated to 45 ℃～80 ℃; Heavy traffic paving asphalt, soap lye, line style liquid SBS and organic additive are mixed rapidly in the mixing device, form uniform and stable outstanding absurd creature, fully stir, be cooled to normal temperature storage and promptly get through shredder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102515711A CN101735625B (en) | 2009-12-25 | 2009-12-25 | Special modified cold-mixing asphalt for cold-region normal-temperature mixing-type asphalt concrete |
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| CN2009102515711A CN101735625B (en) | 2009-12-25 | 2009-12-25 | Special modified cold-mixing asphalt for cold-region normal-temperature mixing-type asphalt concrete |
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| CN101735625A CN101735625A (en) | 2010-06-16 |
| CN101735625B true CN101735625B (en) | 2012-07-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190898B (en) * | 2011-03-22 | 2012-07-04 | 四川国星高分子树脂有限公司 | Preparation method of paving asphalt modified at normal temperature |
| CN102676060B (en) * | 2012-04-13 | 2014-03-05 | 太原理工大学 | Antifreeze liquid film for pulverized coal transport and preparation method and application thereof |
| CN109232974B (en) * | 2018-08-15 | 2021-08-17 | 合肥孚成活性材料技术开发有限公司 | Normal-temperature regenerant for recycled asphalt pavement materials |
| CN111233371A (en) * | 2020-01-20 | 2020-06-05 | 北京建筑大学 | Polyurethane micro-surfacing sealing layer mixture and preparation method and application thereof |
Citations (4)
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|---|---|---|---|---|
| KR20070089280A (en) * | 2006-02-28 | 2007-08-31 | (주) 시티이엔지 | Binder composition for asphalt |
| CN101200595A (en) * | 2006-12-12 | 2008-06-18 | 中国石油天然气股份有限公司 | Modified emulsified asphalt |
| CN101508848A (en) * | 2009-03-18 | 2009-08-19 | 广州路翔股份有限公司 | Modified emulsified asphalt, production method and CA mortar comprising the emulsified asphalt |
| CN101550277A (en) * | 2009-05-15 | 2009-10-07 | 江苏省镇江市路桥工程总公司 | Liquid SBS modified emulsified asphalt and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070089280A (en) * | 2006-02-28 | 2007-08-31 | (주) 시티이엔지 | Binder composition for asphalt |
| CN101200595A (en) * | 2006-12-12 | 2008-06-18 | 中国石油天然气股份有限公司 | Modified emulsified asphalt |
| CN101508848A (en) * | 2009-03-18 | 2009-08-19 | 广州路翔股份有限公司 | Modified emulsified asphalt, production method and CA mortar comprising the emulsified asphalt |
| CN101550277A (en) * | 2009-05-15 | 2009-10-07 | 江苏省镇江市路桥工程总公司 | Liquid SBS modified emulsified asphalt and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 何会成等.乳化SBS改性沥青和SBR改性乳化沥青对比试验.《石油沥青》.2007,第21卷(第4期),第21-24页. * |
| 才洪美等.SBS胶乳改性乳化沥青稳定性研究.《石油沥青》.2008,第22卷(第3期),第20-23页. * |
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