CN102234434A - Emulsified asphalt for roads and preparation method thereof - Google Patents
Emulsified asphalt for roads and preparation method thereof Download PDFInfo
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- CN102234434A CN102234434A CN 201010227398 CN201010227398A CN102234434A CN 102234434 A CN102234434 A CN 102234434A CN 201010227398 CN201010227398 CN 201010227398 CN 201010227398 A CN201010227398 A CN 201010227398A CN 102234434 A CN102234434 A CN 102234434A
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Abstract
The invention discloses emulsified asphalt for roads and a preparation method thereof. The emulsified asphalt comprises asphalts, cationic emulsifiers, zwitterionic emulsifiers, alcohols and water, wherein the alcohols are one or more of ethanol, propanol, isopropanol and tert butyl alcohol. The emulsified asphalt has the following advantages: through synergistic action of the compound emulsifier and lower fatty alcohols, without adding such diluents as diesel or kerosene, the emulsified asphalt can be used for shortening the time of moisture volatilization, speeding up mixture hardening and improving the frost resistance, is not frozen at minus 5-minus 25 DEG C, maintains such excellent properties of the original asphalts as caking property and can be used for avoiding the low-temperature shrinkage crack or freeze thawing and looseness of a mixture in winter. The emulsified asphalt is used for highway maintenance and repair.
Description
Technical field
The present invention relates to a kind of road emulsified bitumen and preparation method thereof, particularly a kind of anti-freezing emulsified asphalt and preparation method thereof, this emulsified bitumen can be used for highway maintenance, maintenance.
Background technology
In the maintenance and maintenance process of highway, emulsified bitumen is one of a kind of material commonly used.Compare with heated bitumen, advantages such as saving the energy, easy to use, environmental protection is arranged.But there is the relatively poor shortcoming of anti-freezing property in employed in the past emulsified bitumen, is easy to when store winter because of freezing breakdown of emulsion, consequently can't continue to use.In addition, adopt the road surface of emulsified bitumen making, winter, the low temperature shrinkage cracking took place easily or freeze thawing loose, also be because relatively poor the causing of emulsified bitumen anti-freezing property of being adopted.Use when emulsified bitumen in the past can only be higher than-5 ℃ in temperature, then freeze, breakdown of emulsion just takes place after melt and dissolved, can't re-use when being lower than-5 ℃.
CN1554708A discloses a kind of road with cold mixing cold laid asphaltic material, is pitch to be heated to 120 ℃ dissolve, and adds thinner (diesel oil or kerosene), resin, urethane, frostproofer (ethylene glycol or glycol ether), setting accelerator, stirs and gets.This pitch material is a kind of fluxed asphalt, is not emulsified bitumen, does not wherein have the composition of water.This method makes pitch lose performances such as original cohesiveness for the adding that remedies because of thinner, polymer substance resin and urethane have been added, step complexity not only, increased preparation cost, and the patented product is unsuitable for using under the situation that has water to exist, when using, must guarantee the road surface drying, compare with emulsified bitumen, comparatively strict to the construction environment conditional request.In addition, it is higher as the thinner cost to add diesel oil or kerosene, and also can polluted air when diesel oil or kerosene volatilization, and operator can smell dense oil gas flavor when work, the healthy of personnel is harmful to.Add ethylene glycol or glycol ether as frostproofer, higher not volatile because of its boiling point, the presetting period of compound is prolonged, but also can cause that compound is loose, building stones peel off easily.Although this patent has added the amine setting accelerator, presetting period is accelerated, strengthened the electric charge on building stones surfaces, thereby improved the adhesivity of pitch and building stones, but because the adding of diesel oil (or kerosene) and ethylene glycol (or glycol ether), can obviously reduce bituminous viscosity and toughness, also can only improve adhesivity between pitch and the building stones even added the amine setting accelerator, but can't improve the cohesiveness between building stones and the building stones.So this patent has problems aspect cohesiveness.The Marshall stability data also can be found out from embodiment, and the cohesiveness of compound is bad, so stability is less.
CN101148544A discloses a kind of cold crack pouring asphalt emulsion and preparation method thereof, used a spot of solvent oil in this bitumen emulsion, though low than the consumption of diesel oil among the CN1554708A or kerosene, but still can make bituminous cohesiveness variation to a certain extent, and can increase cost, polluted air.In addition, CN101148544A has used cationic emulsifier or anionic emulsifier separately, because this asphalt emulsification system is comparatively complicated, and emulsifying agent is single, and the stability in storage of emulsion can have problems.In addition, ethylene glycol or glycerol have been used in this patent, although the two good frost resistance, but because of its boiling point higher not volatile, retain in after the application in the compound, can make bituminous cohesiveness variation, make compound be difficult for sclerosis, bad adhesion between novel material and the old pavement is difficult for forming firm tack coat.
Summary of the invention
At the deficiencies in the prior art part, the invention provides a kind of good frost resistance, cohesiveness is good, cost is low road with emulsified bitumen and preparation method thereof.This emulsified bitumen does not freeze when can be implemented in-5 ℃～-25 ℃, avoided emulsified bitumen in the past because of freezing to cause breakdown of emulsion winter, cause the wasting of resources, also can avoid adopting the road surface of in the past emulsified bitumen making to freeze shrinkage cracking or the loose phenomenon of freeze thawing winter simultaneously.
Road emulsified bitumen of the present invention comprises pitch, cationic emulsifier, amphoteric ion type emulsifying agent, alcohol, water, in the gross weight of emulsified bitumen:
Pitch 40.0%～65.0%,
Cationic emulsifier 0.1%～6.0%,
Amphoteric ion type emulsifying agent 0.1%～2.0%,
Alcohol 10.0%～20.0%,
Water 24.8%～32.0%;
Used alcohols is one or more in ethanol, propyl alcohol, Virahol and the trimethyl carbinol, is preferably the trimethyl carbinol.
Used cationic emulsifier is a quaternary ammonium salt, is selected from octadecyl trimethyl ammonium chloride, palmityl trimethyl ammonium chloride, Dodecyl trimethyl ammonium chloride, Trimethyllaurylammonium bromide, octadecyl trimethyl benzyl ammonia chloride, cetyl trimethyl benzyl ammonium chloride, the dodecyl benzyl dimethyl ammonium chloride one or more.
Used amphoteric ion type emulsifying agent is aminocarboxylic acid and salt thereof, can be selected from N-cocoyl-β-An Jibingsuan sodium, N-cocoyl-β-An Jibingsuan, N-lauryl-β-An Jibingsuan, N-myristyl-β-An Jibingsuan, N-tallow-β-imido disodium beclomethasone, the N-lauryl-β-imido disodium beclomethasone one or more.
Used pitch is petroleum pitch, comprises in straight-run pitch, oxidized bitumen, solvent deoiling pitch, the polymer modified asphalt one or more, and its penetration degree is 40～2101/10mm.
Used water can be one or more in tap water, underground water, service water and the river.
Road of the present invention with the Preparation of Emulsification Asphalt method is: earlier soluble in water jointly, and then the adding alcohols cationic emulsifier, amphoteric ion type emulsifying agent, be prepared into soap lye and be heated to 40 ℃～65 ℃ standby; With pitch be heated to 110 ℃～165 ℃ standby; Above-mentioned soap lye and heated bitumen are transported to respectively in the colloidal mill,, become emulsion oil-in-water,, go out system when preferably dropping to below 40 ℃, obtain anti-freezing emulsified asphalt when emulsion temperature drops to below 70 ℃ through the colloidal mill homodisperse and after grinding.When wherein said emulsion after colloidal mill grinds does not drop to out system temperature, can adopt the mode of heat exchange, lower the temperature, go out system then such as water cooler.
Emulsified bitumen of the present invention has following advantage:
1, the used emulsifying agent of the present invention is cationic and the two composite forming of amphoteric ion type, and especially cationic emulsifier is selected quaternary ammonium salt for use, and the amphoteric ion type emulsifying agent is selected aminocarboxylic acid and salt thereof for use, and both carry out composite.This compound scheme can effectively be brought into play speciality separately, improves the stability of emulsion.The mix performance of emulsion and building stones is good, and behind emulsion and the building stones mix, the associativity of pitch and building stones is good, and cohesive force is big, helps improving the frost resistance and the Marshall stability of compound.And can also promote the compound setting rate, shorten setting time.In addition, adopt two kinds of emulsifying agents of the present invention composite, can reduce the emulsifying agent consumption, reduce cost.
2, anti-freezing emulsified asphalt of the present invention, because lower aliphatic alcohols and compound emulsifying agent are present in the emulsified bitumen simultaneously, by both synergies, not only can improve stability of emulsion, even caking phenomenon can not take place at-25 ℃ of multigelations yet, have good stability and freezing and thawing performance.When after using on the road, part alcohol volatilizees away and can simultaneously moisture be carried volatilization, shorten the time of moisture evaporation, accelerate the compound setting rate, open to traffic is rapidly avoided the traffic congestion that causes because of road maintenance, and a part of alcohol still retains in and plays freeze proof effect in the bituminous material, make compound be difficult for the loose phenomenon of freeze thawing takes place, improved the pavement maintenance quality.In addition, owing to the existence of lower aliphatic alcohols, improved the diffustivity of compound, when being used for road surface filleting repairing, compound is diffused into the fissured deep layer of old pavement position easily, improves repair efficiency.
3, the present invention does not use diesel oil or solvent wet goods oil product, can keep the original superperformance of pitch, such as cohesiveness etc., and can reduce cost, and alleviates the atmospheric pollution and the personnel safety problem that cause because of diesel oil or the volatilization of solvent oil content.
4, the inventive method can adopt existing industrial device, need not transform and can implement.
Embodiment
Describe technical scheme of the present invention in detail below in conjunction with embodiment, but the invention is not restricted to following examples.
Embodiment 1
Getting penetration degree is the LIAOHE CRUDE straight-run pitch 6400g of 1481/10mm, be heated to 115 ℃ standby.Get cationic emulsifier palmityl trimethyl ammonium chloride 10g, amphoteric ion type emulsifying agent N-cocoyl-β-An Jibingsuan sodium 10g is dissolved in the 2510g water jointly, after treating that emulsifying agent fully dissolves, add Virahol 1070g again, stir, be heated to 42 ℃, it is standby to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, by water cooler emulsion temperature is reduced to below 60 ℃ again, flow out, obtain anti-freezing emulsified asphalt from the outlet of system through the colloidal mill homodisperse and after grinding.Concrete outcome sees Table 1.
Embodiment 2
Getting penetration degree is Oman crude oil solvent deoiling pitch 6000g of Maoming petro-chemical corporation of 981/10mm, be heated to 125 ℃ standby.Get cationic emulsifier octadecyl trimethyl ammonium chloride 600g, amphoteric ion type emulsifying agent N-lauryl-β-An Jibingsuan 22g, be dissolved in the 1978g water, after treating that emulsifying agent fully dissolves, add ethanol 400g again, trimethyl carbinol 1000g stirs, be heated to 50 ℃, it is standby to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, by water cooler emulsion temperature is reduced to below 50 ℃ again, flow out, obtain anti-freezing emulsified asphalt from the outlet of system through the colloidal mill homodisperse and after grinding.Concrete outcome sees Table 1.
Embodiment 3
Getting penetration degree is the Kuwait Crude Oil oxidized bitumen 4200g of the Qilu Petrochemical company of 561/10mm, be heated to 155 ℃ standby.Get cationic emulsifier octadecyl trimethyl benzyl ammonia chloride 220g, amphoteric ion type emulsifying agent N-tallow-β-imido disodium beclomethasone 200g, be dissolved in the 3380g water, after treating that emulsifying agent fully dissolves, add propyl alcohol 2000g again, stir, be heated to 55 ℃, it is standby to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, by water cooler emulsion temperature is reduced to below 70 ℃ again, flow out, obtain anti-freezing emulsified asphalt from the outlet of system through the colloidal mill homodisperse and after grinding.Concrete outcome sees Table 1.
Embodiment 4
Getting penetration degree is the SBS modifying asphalt 5000g of 2081/10mm, be heated to 162 ℃ standby.Get cationic emulsifier dodecyl benzyl dimethyl ammonium chloride 150g, amphoteric ion type emulsifying agent N-lauryl-β-imido disodium beclomethasone 80g, be dissolved in the 3170g water, after treating that emulsifying agent fully dissolves, add trimethyl carbinol 1600g again, stir, be heated to 62 ℃, it is standby to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, by water cooler emulsion temperature is reduced to below 40 ℃ again, flow out, obtain anti-freezing emulsified asphalt from the outlet of system through the colloidal mill homodisperse and after grinding.Concrete outcome sees Table 1.
Comparative example 1
Getting penetration degree is the LIAOHE CRUDE straight-run pitch 6400g of 1481/10mm, be heated to 115 ℃ standby.Get cationic emulsifier hydrogenated-tallow group trimethylene diamines 25g, nonionic emulsifier glycerol fatty acid ester 5g is dissolved in the 2500g water, after treating that emulsifying agent fully dissolves, add Virahol 1070g again, stir, be heated to 42 ℃, it is standby to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, by water cooler emulsion temperature is reduced to below 60 ℃ again, flow out, obtain anti-freezing emulsified asphalt from the outlet of system through the colloidal mill homodisperse and after grinding.Concrete outcome sees Table 1.
Comparative example 2
Getting penetration degree is the SBS modifying asphalt 5000g of 2081/10mm, be heated to 162 ℃ standby.Get cationic emulsifier dodecyl benzyl dimethyl ammonium chloride 150g, amphoteric ion type emulsifying agent N-lauryl-β-imido disodium beclomethasone 80g, be dissolved in the 3170g water, after treating that emulsifying agent fully dissolves, add ethylene glycol 1600g again, stir, be heated to 62 ℃, it is standby to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, by water cooler emulsion temperature is reduced to below 40 ℃ again, flow out, obtain anti-freezing emulsified asphalt from the outlet of system through the colloidal mill homodisperse and after grinding.Concrete outcome sees Table 1.
Table 1
Claims (11)
1. a road emulsified bitumen comprises pitch, cationic emulsifier, amphoteric ion type emulsifying agent, alcohol, water, in the gross weight of emulsified bitumen:
Pitch 40.0%～65.0%,
Cationic emulsifier 0.1%～6.0%,
Amphoteric ion type emulsifying agent 0.1%～2.0%,
Alcohol 10.0%～20.0%,
Water 24.8%～32.0%;
Used alcohols is one or more in ethanol, propyl alcohol, Virahol and the trimethyl carbinol.
2. according to the described emulsified bitumen of claim 1, it is characterized in that described alcohols is the trimethyl carbinol.
3. according to the described emulsified bitumen of claim 1, it is characterized in that described cationic emulsifier is a quaternary ammonium salt, described amphoteric ion type emulsifying agent is aminocarboxylic acid and salt thereof.
4. according to the described emulsified bitumen of claim 3, it is characterized in that described quaternary ammonium salt is selected from one or more in octadecyl trimethyl ammonium chloride, palmityl trimethyl ammonium chloride, Dodecyl trimethyl ammonium chloride, Trimethyllaurylammonium bromide, octadecyl trimethyl benzyl ammonia chloride, cetyl trimethyl benzyl ammonium chloride, the dodecyl benzyl dimethyl ammonium chloride.
5. according to the described emulsified bitumen of claim 3, it is characterized in that described aminocarboxylic acid and salt thereof are selected from one or more in N-cocoyl-β-An Jibingsuan sodium, N-cocoyl-β-An Jibingsuan, N-lauryl-β-An Jibingsuan, N-myristyl-β-An Jibingsuan, N-tallow-β-imido disodium beclomethasone, the N-lauryl-β-imido disodium beclomethasone.
6. according to the described emulsified bitumen of claim 1, it is characterized in that used pitch is that penetration degree is the petroleum pitch of 40～2101/10mm.
7. according to the described emulsified bitumen of claim 6, it is characterized in that used petroleum pitch is one or more in straight-run pitch, oxidized bitumen, solvent deoiling pitch and the polymer modified asphalt.
8. the arbitrary described Preparation of Emulsification Asphalt method of claim 1～7, comprise the steps: that elder generation is soluble in water jointly cationic emulsifier, amphoteric ion type emulsifying agent, and then adding alcohols, be prepared into soap lye and be heated to 40 ℃～65 ℃ standby, with pitch be heated to 110 ℃～165 ℃ standby; Above-mentioned soap lye and heated bitumen are transported to respectively in the colloidal mill,, become emulsion oil-in-water, when emulsion temperature drops to below 70 ℃, go out system, obtain anti-freezing emulsified asphalt through the colloidal mill homodisperse and after grinding.
9. according to the described preparation method of claim 8, it is characterized in that going out system when described emulsion temperature drops to below 40 ℃, obtain anti-freezing emulsified asphalt.
10. according to the described preparation method of claim 8, when it is characterized in that described emulsion after colloidal mill grinds does not drop to out system temperature, adopt the mode of heat exchange to lower the temperature, go out system then.
11., it is characterized in that described heat exchange employing water cooler according to the described preparation method of claim 10.
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| CN2010102273984A CN102234434B (en) | 2010-04-23 | 2010-07-09 | Emulsified asphalt for roads and preparation method thereof |
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| CN201010155265.0 | 2010-04-23 | ||
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| CN2010102273984A CN102234434B (en) | 2010-04-23 | 2010-07-09 | Emulsified asphalt for roads and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675889A (en) * | 2012-05-22 | 2012-09-19 | 山西明科斯科技有限公司 | Polymer modified emulsified asphalt composition and preparation method thereof |
| CN108463510A (en) * | 2015-11-13 | 2018-08-28 | 埃尔根沥青及乳剂公司 | The micro- surface treating composition of crack resistance |
| CN112608614A (en) * | 2020-12-16 | 2021-04-06 | 中科庆华(上海)科技有限公司 | Pavement composite board and preparation method and application thereof |
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| JPS6317960A (en) * | 1986-07-09 | 1988-01-25 | Kao Corp | Asphalt emulsion |
| JP2002020626A (en) * | 2000-07-06 | 2002-01-23 | Kao Corp | Asphalt emulsifying dispersant |
| CN1942525A (en) * | 2004-02-18 | 2007-04-04 | 米德维斯特沃克公司 | Method for producing bituminous compositions |
| CN101054470A (en) * | 2007-05-25 | 2007-10-17 | 重庆师范大学 | Emulsification asphalt used for high speed railway or light rail plate type slag-free orbit CA mortar |
| CN101697447A (en) * | 2009-10-19 | 2010-04-21 | 银世德 | Novel magnetic energy engine |
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2010
- 2010-07-09 CN CN2010102273984A patent/CN102234434B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6317960A (en) * | 1986-07-09 | 1988-01-25 | Kao Corp | Asphalt emulsion |
| JP2002020626A (en) * | 2000-07-06 | 2002-01-23 | Kao Corp | Asphalt emulsifying dispersant |
| CN1942525A (en) * | 2004-02-18 | 2007-04-04 | 米德维斯特沃克公司 | Method for producing bituminous compositions |
| CN101054470A (en) * | 2007-05-25 | 2007-10-17 | 重庆师范大学 | Emulsification asphalt used for high speed railway or light rail plate type slag-free orbit CA mortar |
| CN101697447A (en) * | 2009-10-19 | 2010-04-21 | 银世德 | Novel magnetic energy engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675889A (en) * | 2012-05-22 | 2012-09-19 | 山西明科斯科技有限公司 | Polymer modified emulsified asphalt composition and preparation method thereof |
| CN108463510A (en) * | 2015-11-13 | 2018-08-28 | 埃尔根沥青及乳剂公司 | The micro- surface treating composition of crack resistance |
| US11781019B2 (en) | 2015-11-13 | 2023-10-10 | Ergon, Inc. | Crack resistant micro surfacing composition |
| CN112608614A (en) * | 2020-12-16 | 2021-04-06 | 中科庆华(上海)科技有限公司 | Pavement composite board and preparation method and application thereof |
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| CN102234434B (en) | 2012-10-17 |
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