CN102234437B - Emulsified asphalt and preparation method thereof - Google Patents
Emulsified asphalt and preparation method thereof Download PDFInfo
- Publication number
- CN102234437B CN102234437B CN2010102274559A CN201010227455A CN102234437B CN 102234437 B CN102234437 B CN 102234437B CN 2010102274559 A CN2010102274559 A CN 2010102274559A CN 201010227455 A CN201010227455 A CN 201010227455A CN 102234437 B CN102234437 B CN 102234437B
- Authority
- CN
- China
- Prior art keywords
- pitch
- water
- emulsified bitumen
- bitumen
- emulsified asphalt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses emulsified asphalt and a preparation method thereof. The emulsified asphalt comprises asphalts, cationic emulsifiers, zwitterionic emulsifiers, a non-ionic emulsifier, 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 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 emulsified bitumen and preparation method thereof, a kind of anti-freezing emulsified asphalt and preparation method thereof particularly, 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 (terepthaloyl moietie 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; Added polymer substance resin and urethane, not only complicated steps has increased preparation cost; And the patented product is inappropriate under the situation that has water to exist and uses; Must guarantee that when using the road surface is dry, 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 terepthaloyl moietie 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 building stones surface electric charge property, thereby improved the adhesivity of pitch and building stones; But because the adding of diesel oil (or kerosene) and terepthaloyl moietie (or glycol ether); Can obviously reduce bituminous viscosity and toughness, also can only improve the 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, terepthaloyl moietie or USP Kosher 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
To the weak point that exists in the prior art, the invention provides a kind of good frost resistance, cohesiveness is good, cost is low 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.
Emulsified bitumen of the present invention comprises pitch, cationic emulsifier, amphoteric ion type emulsifying agent, nonionic emulsifier, alcohol, water, in the gross weight of emulsified bitumen:
Pitch 40.0%～65.0%,
Cationic emulsifier 0.05%～5.5%,
Amphoteric ion type emulsifying agent 0.03%～0.5%,
Nonionic emulsifier 0.02%～1.0%,
Alcohol 10.0%～20.0%,
Water 24.9%～33.0%;
Used alcohols is one or more in ethanol, propyl alcohol, Virahol and the trimethyl carbinol, is preferably the trimethyl carbinol.
Described cationic emulsifier can be in OTAC, palmityl trimethyl ammonium chloride, DTAC, Trimethyllaurylammonium bromide, octadecyl trimethyl benzyl ammonia chloride, cetyl trimethyl benzyl ammonium chloride, the dodecyl benzyl dimethyl ammonium chloride one or more for being quaternary ammonium salt.
Described amphoteric ion type emulsifying agent is aminocarboxylic acid and salt thereof, can be 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 one or more.
Described nonionic emulsifier is an AEO; Can be the mixture of one or more arbitrary proportions in ethoxylated dodecyl alcohol, Brij, palmityl alcohol Soxylat A 25-7, hexalin Soxylat A 25-7, the terpenol Soxylat A 25-7, wherein T 46155 molecule number be 15～25 in the AEO.
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.
The preparation method of anti-freezing emulsified asphalt of the present invention is: earlier soluble in water jointly, and then the adding alcohols cationic emulsifier, amphoteric ion type emulsifying agent and nonionic emulsifying agent, be prepared into soap lye and be heated to 40 ℃～65 ℃ subsequent use; With pitch be heated to 110 ℃～165 ℃ subsequent use; 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.
Anti-freezing emulsified asphalt of the present invention has following advantage:
1, the used emulsifying agent of the present invention is by cationic, amphoteric ion type and nonionic emulsifier is composite forms; Especially cationic emulsifier is selected quaternary ammonium salt for use; The amphoteric ion type emulsifying agent is selected aminocarboxylic acid and salt thereof for use; Nonionic emulsifier is selected fatty alcohol polyethenoxy ether class for use, and the three carries out composite.This compound scheme can effectively be brought into play speciality separately, owing to be aided with nonionic emulsifier, the emulsion stability in storage is improved more.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, and the frost resistance and the Marshall stability of compound also are improved.And the use of this compound emulsifying agent can promote the compound setting rate, shortens setting time.In addition, adopt three kinds of emulsifying agents according to the 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; Through both synergies; Not only can improve stability of emulsion, even and at-25 ℃ of multigelations caking phenomenon can not take place 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, shortens 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
Specify technical scheme of the present invention 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 ℃ subsequent use.Get cationic emulsifier palmityl trimethyl ammonium chloride 5g, amphoteric ion type emulsifying agent N-cocoyl-β-An Jibingsuan sodium 10g, nonionic emulsifier oleic alcohol polyoxyethylene (20) ether 10g; Be dissolved in jointly in the 2505g water; After treating that emulsifying agent fully dissolves, add Virahol 1070g again, stir; Be heated to 42 ℃, it is subsequent use to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, through 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 is seen 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 ℃ subsequent use.Get cationic emulsifier OTAC 550g, amphoteric ion type emulsifying agent N-lauryl-β-An Jibingsuan 3g, nonionic emulsifier palmityl alcohol T 46155 (20) ether 2g; Be dissolved in the 2045g water, treat that emulsifying agent fully dissolves after, add ethanol 400g again; Trimethyl carbinol 1000g; Stir, be heated to 50 ℃, it is subsequent use to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, through 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 is seen 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 ℃ subsequent use.Get cationic emulsifier octadecyl trimethyl benzyl ammonia chloride 200g, amphoteric ion type emulsifying agent N-tallow-β-imido disodium beclomethasone 50g, nonionic emulsifier lauryl alcohol polyethylene glycol oxide (20) ether 100g; Be dissolved in the 3450g water; After treating that emulsifying agent fully dissolves, add propyl alcohol 2000g again, stir; Be heated to 55 ℃, it is subsequent use to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, through 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 is seen table 1.
Embodiment 4
Getting penetration degree is the SBS modifying asphalt 5000g of 2081/10mm, be heated to 162 ℃ subsequent use.Get cationic emulsifier dodecyl benzyl dimethyl ammonium chloride 50g, amphoteric ion type emulsifying agent N-lauryl-β-imido disodium beclomethasone 20g, nonionic emulsifier terpenol T 46155 (20) ether 50g; Be dissolved in the 3280g water; After treating that emulsifying agent fully dissolves, add trimethyl carbinol 1600g again, stir; Be heated to 62 ℃, it is subsequent use to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, through 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 is seen table 1.
Comparative example 1
Getting penetration degree is the LIAOHE CRUDE straight-run pitch 6400g of 1481/10mm, be heated to 115 ℃ subsequent use.Get cationic emulsifier hydrogenated-tallow group trimethylene diamines 25g, nonionic emulsifier USP Kosher fatty 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 subsequent use to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, through 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 is seen table 1.
Comparative example 2
Getting penetration degree is the SBS modifying asphalt 5000g of 2081/10mm, be heated to 162 ℃ subsequent use.Get cationic emulsifier dodecyl benzyl dimethyl ammonium chloride 50g, amphoteric ion type emulsifying agent N-lauryl-β-imido disodium beclomethasone 20g, nonionic emulsifier terpenol T 46155 (20) ether 50g; Be dissolved in the 3280g water; After treating that emulsifying agent fully dissolves, add terepthaloyl moietie 1600g again, stir; Be heated to 62 ℃, it is subsequent use to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill,, become emulsion oil-in-water, through 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 is seen table 1.
Table 1
Claims (11)
1. an emulsified bitumen comprises pitch, cationic emulsifier, amphoteric ion type emulsifying agent, nonionic emulsifier, alcohol, water, in the gross weight of emulsified bitumen:
Pitch 40.0%～65.0%,
Cationic emulsifier 0.05%～5.5%,
Amphoteric ion type emulsifying agent 0.03%～0.5%,
Nonionic emulsifier 0.02%～1.0%,
Alcohol 10.0%～20.0%,
Water 24.9%～33.0%;
Used alcohols is one or more in ethanol, propyl alcohol, Virahol and the trimethyl carbinol; Described cationic emulsifier is a quaternary ammonium salt, and described amphoteric ion type emulsifying agent is aminocarboxylic acid and salt thereof, and described nonionic emulsifier is a fatty alcohol polyethenoxy ether class.
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, it is characterized in that described quaternary ammonium salt is selected from one or more in OTAC, palmityl trimethyl ammonium chloride, DTAC, Trimethyllaurylammonium bromide, the dodecyl benzyl dimethyl ammonium chloride.
4. according to the described emulsified bitumen of claim 1, it is characterized in that described aminocarboxylic acid and salt thereof are 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.
5. according to the described emulsified bitumen of claim 1; It is characterized in that described AEO is one or more in ethoxylated dodecyl alcohol, Brij, palmityl alcohol Soxylat A 25-7, hexalin Soxylat A 25-7, the terpenol Soxylat A 25-7, wherein the adduct number of oxyethane is 15～25 in the AEO.
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: earlier cationic emulsifier, amphoteric ion type emulsifying agent, nonionic emulsifier soluble in water jointly; And then adding alcohols; Be prepared into soap lye and be heated to 40 ℃～65 ℃ subsequent use, with pitch be heated to 110 ℃～165 ℃ subsequent use; 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102274559A CN102234437B (en) | 2010-04-23 | 2010-07-07 | Emulsified asphalt and preparation method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010155290.9 | 2010-04-23 | ||
| CN201010155290 | 2010-04-23 | ||
| CN2010102274559A CN102234437B (en) | 2010-04-23 | 2010-07-07 | Emulsified asphalt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102234437A CN102234437A (en) | 2011-11-09 |
| CN102234437B true CN102234437B (en) | 2012-10-17 |
Family
ID=44885587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102274559A Active CN102234437B (en) | 2010-04-23 | 2010-07-07 | Emulsified asphalt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102234437B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194193B (en) * | 2013-04-02 | 2016-08-03 | 西南石油大学 | Emulsified asphalt controlled breakdown of emulsion water shutoff agent and manufacture method and the method utilizing water shutoff agent water blockoff |
| CN109575617A (en) * | 2018-12-04 | 2019-04-05 | 黄河三角洲京博化工研究院有限公司 | A kind of emulsified asphalt and preparation method thereof |
| MX2022012871A (en) * | 2020-05-26 | 2022-11-08 | Asfalto Liquido Tecnologia Extrema Altex Sa | Asphaltic mixture conditioner, conditioned asphaltic paving mixture, their processes of preparation, their uses in paving surfaces, paved surfaces and system to prepare an asphaltic mixture conditioner. |
| CN117126544B (en) * | 2023-08-14 | 2024-03-29 | 湖南云中再生科技股份有限公司 | Compound emulsified asphalt, and preparation and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101153118A (en) * | 2007-05-17 | 2008-04-02 | 张洪武 | Emulsified asphalt |
| CN101691447A (en) * | 2008-05-29 | 2010-04-07 | 中国石油化工股份有限公司 | Pitch water emulsion and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2647831B2 (en) * | 1986-07-09 | 1997-08-27 | 花王株式会社 | Bituminous emulsion |
-
2010
- 2010-07-07 CN CN2010102274559A patent/CN102234437B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101153118A (en) * | 2007-05-17 | 2008-04-02 | 张洪武 | Emulsified asphalt |
| CN101691447A (en) * | 2008-05-29 | 2010-04-07 | 中国石油化工股份有限公司 | Pitch water emulsion and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102234437A (en) | 2011-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101724278B (en) | Anti-freezing emulsified asphalt and preparation method thereof | |
| CN102234433B (en) | Frost-resistant emulsified asphalt for roads and preparation method thereof | |
| CN101321814B (en) | Water-in-oil bitumen dispersions and methods for producing paving compositions from the same | |
| US11174603B2 (en) | Process for cold-in-place recycling using foamed asphalt and lubrication additive | |
| CN105348827B (en) | A kind of solvent type asphalt cold repairing liquid and its preparation process | |
| US11124926B2 (en) | Pavement repair method and system thereof | |
| CN103013144B (en) | In-situ warm-mixing regenerant for bituminous pavement, preparation method and construction method of in-situ warm-mixing regenerant | |
| CN103073748B (en) | Warm-mix asphalt, preparation method thereof and special compound modifying agent | |
| CN102234437B (en) | Emulsified asphalt and preparation method thereof | |
| CN104788970A (en) | Recycling agent for in-place hot recycled asphalt, mixture and preparation thereof | |
| CN102234438B (en) | Emulsified asphalt and preparation method thereof | |
| CN104530731A (en) | High-viscosity spraying type SBS modified emulsified asphalt and preparing method thereof | |
| Takamura et al. | Paving with asphalt emulsions | |
| JP5189535B2 (en) | Road pavement composition and road pavement method | |
| CN102234435B (en) | Frost resistant emulsified bitumen prepared from composite emulsifier, and preparation method thereof | |
| CN104371339A (en) | Road asphalt plasticity improvement asphalt fat glue and preparation method thereof | |
| CN102234434B (en) | Emulsified asphalt for roads and preparation method thereof | |
| CN108485523A (en) | Bituminous paving microwave is rapidly heated accelerating agent and preparation method thereof and application method | |
| Lesueur | Polymer modified bitumen emulsions (PMBEs) | |
| CN102234436B (en) | Frost resistant emulsified bitumen and preparation method thereof | |
| CN103275500A (en) | Preparation method of ice and snow melting modified emulsified-asphalt | |
| CN104386949A (en) | Reparation method and construction method of warm mix asphalt mixture | |
| US3270631A (en) | Method of applying seal coat paving mixtures | |
| CN108559284A (en) | A kind of thin overlay sticking layer oil and its preparation method and application | |
| CN103059580B (en) | Anionic anti-freezing emulsified asphalt and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |