CN101735626A - Specific modified cold-mixed asphalt for heat-area normal-temperature blending asphalt concrete - Google Patents
Specific modified cold-mixed asphalt for heat-area normal-temperature blending asphalt concrete Download PDFInfo
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- CN101735626A CN101735626A CN200910251572A CN200910251572A CN101735626A CN 101735626 A CN101735626 A CN 101735626A CN 200910251572 A CN200910251572 A CN 200910251572A CN 200910251572 A CN200910251572 A CN 200910251572A CN 101735626 A CN101735626 A CN 101735626A
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Abstract
The invention discloses specific modified cold-mixed asphalt for heat-area normal-temperature blending asphalt concrete, comprising the following components by weight percent: 50-70% of heavy traffic paving asphalt, 2.5-15% of star liquid SBS, 1.2-11% of cationic surface active agent, 3-6% of organic assistant and 20-30% of water. The method comprises the following steps: mixing water and the cationic surface active agent according to ratio, fully mixing to form liquid soap by an emulsion machine; heating the heavy traffic paving asphalt to 100-170 DEG C, heating the liquid soap to 45-80 DEG C; rapidly mixing heavy traffic paving asphalt, liquid soap, star liquid SBS and organic assistant in a mixer, forming even and stable suspended material by a grinder, fully stirring, and cooling to normal temperature to obtain the specific modified cold-mixed asphalt. The invention solves the problems of too rapid cold-mix asphalt demulsification speed, unstable performance, short storage time and adaptability of poor provincialism. Pavement property can be greatly improved by evaporated residue of asphalt amalgam. In addition, the process is simple, the performance is stable, and the application is wide.
Description
Technical field
The present invention relates to a kind of highway pavement cold-mix asphalt, relate in particular to the dedicated modified cold-mix asphalt of a kind of heat-area 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 is subjected to 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 made by following materials of weight proportions: the diesel oil of 7-10%, the ethylene glycol of 4-5%, the gasoline of 8-10%, the SBS of 6-8%, the antiaging agent of 5-10%, the antistripping agent of 0.3-0.4%, surplus is a pitch.
This patent of invention is the dilution type cold-mix asphalt, and its pavement performance is poor, and code requirement can only be used for the following use of tertiary road face, or uses as the road surface pit repairing.The cold-mix asphalt of solvent method production owing to make is 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 expensive energy and materials.Adopt this cold-mix asphalt to mix the concrete road poor performance of system, can not be used for high grade highway pavement, only using in the road below three grades.So far do not see and be used for paving of road surface.
Chinese patent application 200910027834.0 discloses liquid SBS modified emulsified asphalt and the preparation method that a kind of road construction and maintenance project are used, and the percentage composition that each component weight accounts for gross weight is: matrix pitch 60-70%; Water 25-35%; Compound emulsifying agent 2-3%; Stablizer 0.01-0.05%; Liquid SBS modified dose of 3-5% that accounts for matrix pitch weight; Liquid SBS modified dose, compound emulsifying agent and stablizer are added in the entry simultaneously, heat while stirring, make liquid SBS modified dose with the mixed aqueous solution of compound emulsifying agent and by aqueous solution pump delivery to 60-65 ℃; Heat matrix pitch to 135-140 ℃ and carry by bitumenpump; Water-soluble liquid pump and bitumenpump are carried to colloidal mill simultaneously, and the cutting and grinding of process colloidal mill gets final product.The present invention is according to different pitch, by liquid SBS modified dose of the composite compound emulsifying agent that adapts and rational Match, improved the every performance of bituminous; Asphalt modification and asphalt emulsification are finished synchronously, simplified technological process.Its weak point is that prepared SBS modified emulsifying asphalt can only be used for spraying as sticking layer oil or seal oil, and can not be used for the system of mixing of bituminous concrete.
Adopt the cold-mix asphalt of solvent method production owing to make and be used for a large amount of gasoline, diesel oil, kerosene, form that intensity is slow, contaminate environment, cost be high, and gasoline, diesel oil etc. are the expensive energy.Adopt this cold-mix asphalt to mix the concrete road poor performance of system, can not be used for high grade highway pavement, only using in the road below three grades.
The apolegamy of emulsifying agent and properties-correcting agent is the key that influences the emulsified bitumen quality.
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 heat-area normal-temperature mix type bituminous concrete, 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 heat-area 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 heat-area normal-temperature mix type bituminous concrete comprises star-like 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%, star-like 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 35 centimetres.Softening temperature: greater than 55 ℃.Recovery of elasticity: greater than 75%.
Described heavy traffic paving asphalt is the petroleum pitch that meets JTG F40-2004 standard-required.
Described star-like liquid SBS is a liquid state, and its solid content remains on weight percent 25%～50%.
Described cats product is selected from one or more in lauryl amine, tetradecylamine, hexadecylamine, octadecylamine, coconut oleyl amine, tallow amine, hydrogenated tallow amine, oleyl amine, docosyl amine, the soybean oleyl amine; Or N-aminoethyl acid amides and/or octadecyl amide group triamine; 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 and/or 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 hydrochloride; In stearyl trimethylene diamines, tallow base trimethylene diamines, hydrogenated-tallow group trimethylene diamines and the lard base trimethylene diamines one or more; Or in xylogen and the polyethylene polyamine material synthetic emulsifying agent one or more; Or a kind of or wherein multiple mixture in the octadecyl trimethyl ammonium chloride, octadecyl trimethylammonium bromide, Dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, palmityl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, cetalkonium chloride, stearyl dimethyl benzyl ammonium chloride.
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) water and cats product are mixed in proportion after, form soap lye through the mulser thorough 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, star-like 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 promptly.
Principle of the present invention is that the tensio-active agent in the cold-mix asphalt has solved and will form a stable uniform mixture between water, properties-correcting agent and the pitch, makes water base group be 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 in the hot area of weather as the complete cold construction problem on ground such as Chinese Guangdong, Guangxi, Fujian on using.Promptly in use need not heating, if the cement concrete construction is the same.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.
Promptly adopt this emulsified bitumen at normal temperatures under the temperature of (10 ℃～40 ℃), the method for the heat temperature raising that gathers materials can need not be mixed to make 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.
Further describe technique effect of the present invention by the following examples, 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 use a kind of hot-zone
Component: by weight percentage, heavy traffic paving asphalt: 70%, star-like liquid SBS: 3.5%, cats product (as mentioned above): 8%, organic additive (as mentioned above): 4%, water: 14.5%.
Preparation method: pitch is heated to 170 ℃; Water is heated to 75 ℃, mixes the back with cats product and grind the formation soap lye; The liquid star properties-correcting agent of the pitch with 70% and 22.5% soap lye and 5% and 4% organic additive rapidly by 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 use a kind of hot-zone
Component: by weight percentage, heavy traffic paving asphalt: 60%, star-like liquid SBS: 4%, cats product: 8%, organic additive: 4%, water: 24%.
The preparation method: pitch is heated to 150 ℃, and soap lye is heated to 65 ℃.After the star-like liquid modifying agent of the pitch with 60% and 32% soap lye and 4% and organic additive mix in the mixing device, stablize suspension liquid by grinding to form, 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 use a kind of hot-zone
Component: by weight percentage, heavy traffic paving asphalt: 50%, star-like liquid SBS: 6%, cats product: 8%, organic additive: 4%, water: 32%.
The preparation method: pitch is heated to 100 ℃, and soap lye is heated to 50 ℃.The star-like liquid modifying agent of the pitch with 50% and 40% soap lye and 6% and 4% organic additive join in the mixing device simultaneously, grind to enter in the transition jar, stir 60 minutes, enter in the finished product jar and are cooled to normal temperature.
Test detects: by 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 as follows
| Test subject | 5 ℃ of ductilities | Softening temperature | Recovery of elasticity | Adhesivity |
| Test 1 | 45 centimetres | ??62℃ | ??81％ | 5 grades |
| Test subject | 5 ℃ of ductilities | Softening temperature | Recovery of elasticity | Adhesivity |
| Test 2 | 62 centimetres | ??71℃ | ??90％ | 5 grades |
| Test 3 | 77 centimetres | ??98℃ | ??98％ | 5 grades |
The cold-mix asphalt that present method is made can use on the south the Changjiang river and in the northern summer weather.Avoided the pavement construction heating.
Claims (7)
1. the dedicated modified cold-mix asphalt of heat-area normal-temperature mix type bituminous concrete comprises star-like 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%, star-like liquid SBS: 2.5%～15%, cats product: 1.2%～11%, organic additive: 3%～6%, water: 20%～30%.
2. modification cold-mix asphalt as claimed in claim 1 is characterized in that: described heavy traffic paving asphalt is the petroleum pitch that meets JTG F40-2004 standard-required.
3. modification cold-mix asphalt as claimed in claim 1 is characterized in that: described star-like liquid SBS is a liquid state, and its solid content weight percent remains on 25%～50%.
4. modification cold-mix asphalt as claimed in claim 1 is characterized in that: described cats product is selected from one or more in lauryl amine, tetradecylamine, hexadecylamine, octadecylamine, coconut oleyl amine, tallow amine, hydrogenated tallow amine, oleyl amine, docosyl amine, the soybean oleyl amine; Or N-aminoethyl acid amides and/or octadecyl amide group triamine; 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 and/or 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 hydrochloride; In stearyl trimethylene diamines, tallow base trimethylene diamines, hydrogenated-tallow group trimethylene diamines and the lard base trimethylene diamines one or more; Or in xylogen and the polyethylene polyamine material synthetic emulsifying agent one or more; Or a kind of or wherein multiple mixture in the octadecyl trimethyl ammonium chloride, octadecyl trimethylammonium bromide, Dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, palmityl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, tetradecyl dimethyl benzyl ammonium chloride, cetalkonium chloride, stearyl dimethyl benzyl ammonium chloride.
5. modification cold-mix asphalt as claimed in claim 1 is characterized in that: described organic additive is selected from one or more in the fatty acid methyl ester ethoxy compound class.
6. modification cold-mix asphalt as claimed in claim 1 is characterized in that: calcium ions and magnesium ions content is no more than 120mg in the described water.
7. a method for preparing as any described modification cold-mix asphalt of claim in front comprises the steps:
1) water and cats product are mixed in proportion after, form soap lye through the mulser thorough 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 promptly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910251572A CN101735626A (en) | 2009-12-25 | 2009-12-25 | Specific modified cold-mixed asphalt for heat-area normal-temperature blending asphalt concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910251572A CN101735626A (en) | 2009-12-25 | 2009-12-25 | Specific modified cold-mixed asphalt for heat-area normal-temperature blending asphalt concrete |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532925A (en) * | 2012-01-11 | 2012-07-04 | 李国涛 | Modified emulsified asphalt used for half warm mix modification and preparation method of the same |
| CN102795801A (en) * | 2012-08-17 | 2012-11-28 | 辽宁石油化工大学 | Asphalt warm mix additive for high grade road and preparation method thereof |
| CN103183938A (en) * | 2013-03-21 | 2013-07-03 | 清华大学深圳研究生院 | Polycaprolactone/poly butylene succinate/eggshell powder composite material and preparation method thereof |
| CN103709766A (en) * | 2013-12-13 | 2014-04-09 | 许昌金欧特沥青股份有限公司 | Cold mixing and cold paving type SBS modified emulsified asphalt and preparation method thereof |
-
2009
- 2009-12-25 CN CN200910251572A patent/CN101735626A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532925A (en) * | 2012-01-11 | 2012-07-04 | 李国涛 | Modified emulsified asphalt used for half warm mix modification and preparation method of the same |
| CN102795801A (en) * | 2012-08-17 | 2012-11-28 | 辽宁石油化工大学 | Asphalt warm mix additive for high grade road and preparation method thereof |
| CN103183938A (en) * | 2013-03-21 | 2013-07-03 | 清华大学深圳研究生院 | Polycaprolactone/poly butylene succinate/eggshell powder composite material and preparation method thereof |
| CN103183938B (en) * | 2013-03-21 | 2015-08-26 | 清华大学深圳研究生院 | Polycaprolactone/poly butylene succinate/egg-shell meal matrix material and method for making thereof |
| CN103709766A (en) * | 2013-12-13 | 2014-04-09 | 许昌金欧特沥青股份有限公司 | Cold mixing and cold paving type SBS modified emulsified asphalt and preparation method thereof |
| CN103709766B (en) * | 2013-12-13 | 2015-05-20 | 许昌金欧特沥青股份有限公司 | Cold mixing and cold paving type SBS modified emulsified asphalt and preparation method thereof |
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Application publication date: 20100616 |