CN101070433A - Emulsified pitch and preparing method - Google Patents
Emulsified pitch and preparing method Download PDFInfo
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- CN101070433A CN101070433A CN 200710078480 CN200710078480A CN101070433A CN 101070433 A CN101070433 A CN 101070433A CN 200710078480 CN200710078480 CN 200710078480 CN 200710078480 A CN200710078480 A CN 200710078480A CN 101070433 A CN101070433 A CN 101070433A
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Abstract
The invention provides an emulsified asphalt, which has the compositions of bitumen, surfactant, additives and water, the content of each component as follows : Asphalt 22 -55% surfactant: cationic surfactant 1.0 - 15 %, non-ionic surfactant 1.0 -20%; auxiliaries 0.1-8%; cushion for water; the ratios are according to the percentage of weight.. The invention of products, in lines with its performance as 'People's Republic of China Ministry of Railways' plate ballastless track emulsified asphalt cement mortar CA technical conditions, ' In the practical use ,which is to avoid CA mortar (that is, cement -- Asphalt mortar) have Segregation and enable CA mortar have a appropriate time to fully meet the needs of the construction, so that the products of this invention can be effectively used for high-speed railway plate ballastless track in the CA mortar.
Description
Technical field
The present invention relates to the high-speed railway plate-type slag-free orbit, specifically be applied to a kind of emulsified bitumen in the cement-bituminous mortar (claiming the CA mortar again) of high-speed railway plate-type slag-free orbit.
Background technology
In building high-speed railway, adopt board-like nothing quarrel technology in a large number, the CA mortar in this technology is one of core technology wherein.And emulsified bitumen is one of main ingredient in the CA mortar.But existing emulsified bitumen is not owing to consider the particular requirement of CA mortar in the high-speed railway plate-type slag-free orbit is used, as degree of mobilization, operable time, early strength and weathering resistance etc., therefore if it is applied in the CA mortar as one of main component, short, the problems such as intensity does not reach, mortar segregation of operable time appear easily, can not satisfy " The Ministry of Railway of the People's Republic of China, MOR " line plate-type slag-free orbit emulsified bitumen concrete CA mortar technical qualification then change " ", make this CA mortar be difficult in the high-speed railway plate-type slag-free orbit, use.
Summary of the invention
Purpose of the present invention just is to provide the emulsified bitumen in a kind of CA mortar that is used for the high-speed railway plate-type slag-free orbit.
Another object of the present invention provides this Preparation of Emulsification Asphalt method.
The object of the present invention is achieved like this: a kind of emulsified bitumen, and it is made up of pitch, tensio-active agent, auxiliary agent and water, and wherein each components contents is:
Pitch: 22~55%
Tensio-active agent: cats product 1.0~15%
Nonionogenic tenside 1.0~20%
Auxiliary agent: 0.1~8%
Surplus is a water
All by weight percentage.
Above-mentioned pitch be petroleum pitch or/and coal-tar pitch or/and rock asphalt, penetration degree is 40~140, its unit is 1/10mm; Above-mentioned cats product is one or more in alkyl amine, alkylamide, imidazolines, alkyl propylene diamine class, aminated lignin class, the quaternary ammonium salt; Above-mentioned nonionogenic tenside is one or more in the fatty acid methyl ester ethoxylate class; Above-mentioned auxiliary agent is stablizer and/or additive.
The amount of above-mentioned nonionogenic tenside is preferably 1.0~18%; The amount of above-mentioned auxiliary agent is preferably 0.2~8%, and the amount of stablizer is 0~0.2% in the above-mentioned auxiliary agent; All by weight percentage.
Above-mentioned penetration of bitumens is preferably 60~120; The abovementioned alkyl amine is 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; The abovementioned alkyl amides is N-aminoethyl acid amides and/or octadecyl amide group triamine; Above-mentioned imidazolines is 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 and/or 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 hydrochloride; Abovementioned alkyl Pn class is one or more in stearyl trimethylene diamines, tallow base trimethylene diamines, hydrogenated-tallow group trimethylene diamines and the lard base trimethylene diamines; Above-mentioned aminated lignin class is commercially available with in xylogen and the polyethylene polyamine material synthetic emulsifying agent one or more; Above-mentioned quaternary ammonium salt is one or more in 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, the stearyl dimethyl benzyl ammonium chloride; The carbon chain lengths of the lipid acid in the above-mentioned fatty acid methyl ester ethoxylate class is the single carbochain of 10~26 carbon atoms or the combination of multiple carbochain, and the oxyethane number of addition is in 3~500 one or more in the fatty acid methyl ester ethoxylate molecule; The aforementioned stable agent is one or more in ammonium salt, magnesium salts, calcium salt, strontium salt and the molysite; Above-mentioned additive is one or more in guar gum, carboxymethyl cellulose salt, Natvosol, alcohols, polymaleic anhydride, the polyacrylamide.
Above-mentioned guar gum is preferably the positively charged ion guar gum; Above-mentioned carboxymethyl cellulose salt be meant its sodium salt or/and sylvite or/and ammonium salt; Above-mentioned alcohols is that carbonatoms is one or more in 1~100 the alcohol, polyvinyl alcohol, polyoxyethylene glycol.
Another object of the present invention is above-mentioned Preparation of Emulsification Asphalt method, it is characterized in that: with the pitch of said ratio, be heated to 110~180 ℃; Tensio-active agent, auxiliary agent and the water of said ratio are mixed the formation aqueous solution under 30~95 ℃ temperature; Then the aqueous solution emulsification of the pitch after the above-mentioned heating with above-mentioned tensio-active agent and auxiliary agent is got product.
In order to make the final product quality after the above-mentioned emulsification even, the pitch after the above-mentioned heating by behind the emulsifying device, is cooled to room temperature under stirring with the aqueous solution of above-mentioned tensio-active agent and auxiliary agent.
Product among the present invention, its every performance index meet the requirement of " The Ministry of Railway of the People's Republic of China, MOR " line plate-type slag-free orbit emulsified bitumen concrete CA mortar technical qualification then change " " and " China Academy of Railways Sciences compile " Beijing-Shanghai High-Speed Railway worker be engaged in parts and Bidding Invition technical qualification " the 18th " cement pitch (CA) mortar " ".The early strength of using the CA mortar of product of the present invention is easy to improve, 7 days intensity of the CA mortar of making can reach 1.2~2.0MPa, intensity can reach 1.8~2.5MPa in 28 days, make the unit volume quality and the air content of mortar be easy to reach technical requirements, the unit volume quality that is mortar is more than 1.3kg/l, be generally between 1.55~1.65, air content is 8~10%.And bubble is small, can effectively improve the frost resistance of CA mortar.Because bubble is small, be evenly distributed, so whole system material is even, reduce the material separation degree, made the CA mortar ultimate compression strength unanimity of making, can avoid the CA mortar to produce segregation in actual use, can make the CA mortar working time suitable, reach about 1 hour, fully satisfy the needs of construction, thereby make product of the present invention can be effectively used to CA mortar in the high-speed railway plate-type slag-free orbit.
Do not use pH value conditioning agent and thickening material in the formula for a product of the present invention, and pH value conditioning agent there is the salt acids usually, has therefore avoided the corrosion of hydrochloric acid, also simplified formula for a product of the present invention and production technique equipment.The excellent storage stability of product of the present invention own is convenient to transportation and storage simultaneously, also can not cause corrosion to equipment.In addition,, reduced environmental protection pressure, met the demand of " recycling economy " and sustainable development because the fatty acid methyl ester ethoxylate class of using in the product of the present invention is reproducible tensio-active agent.
Embodiment:
Further specify the present invention below in conjunction with embodiment, but the present invention is not limited to these embodiment.
Embodiment 1: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 90 heavy-duty road asphalts (penetration degree is 92, and unit is 1/10mm); Cats product is the coconut oleyl amine; Fatty acid methyl ester ethoxylate is the Methyl palmitoleinate ethoxylate; Stablizer is a strontium chloride; Additive is a polyvinyl alcohol.Its preparation process is: the pitch in the proportioning is heated to 150 ℃, additives polyvinyl alcohol is dissolved in the boiling water, be cooled to 60 ℃, then other composition is dissolved in the polyvinyl alcohol water solution, form mixed aqueous solution, will add heated bitumen and this mixed aqueous solution at last and together promptly make emulsified asphalt product among the present invention by emulsifying device.The performance test results of products obtained therefrom sees Table 2.Examination criteria and detection method are compiled relevant portion in " Beijing-Shanghai High-Speed Railway worker be engaged in parts and Bidding Invition technical qualification " the 18th " cement pitch (CA) mortar " according to " line plate-type slag-free orbit emulsified bitumen concrete CA mortar technical qualification then change " and China Academy of Railways Sciences, and be as shown in the table:
Project | Unit | Index request | Test method | |
Outward appearance | Light brown liquid, evenly, do not have mechanical impurity | JC/T797 | ||
Particle charge | + | JTJ052-T0653 | ||
Screenings (1.18mm) | % | <0.1 | JTJ052-T0652 | |
Package stability (1 day, 25 ℃) | % | <1.0 | JTJ052-T0655 | |
Low tempertaure storage stability (5 ℃) | No coarse particles or block | JTJ052-T0656 | ||
Cement mixing | % | <1.0 | JTJ052-T0657 | |
Evaporation residue | Residuals content | % | 58~63 | JTJ052-T0651 |
Penetration degree (25 ℃, 100g) | 0.1mm | 60~120 | JTJ052-T0604 | |
Ductility (15 ℃) | cm | >100 | JTJ052-T0605 | |
Solubleness (trieline) | % | >97 | JTJ052-T0607 |
Following examples all detect by last table requirement.
Embodiment 2: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 120 straight run petroleum pitch (penetration degree is 119, and unit is 1/10mm); Cats product is 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 hydrochloride; Fatty acid methyl ester ethoxylate is the tallow acid FMEE; Stablizer is a ferrous sulfate; Additive is the positively charged ion guar gum.Its preparation process is: the pitch in the proportioning is heated to 110 ℃, additive positively charged ion guar gum is dissolved in 40 ℃ of water, other composition is dissolved in the positively charged ion guar gum aqueous solution then, form mixed aqueous solution, will add heated bitumen and this mixed aqueous solution at last and together promptly make emulsified asphalt product among the present invention by emulsifying device.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 3: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is grand celebration propane de-oiled asphalt (penetration degree is 70, and unit is 1/10mm); Cats product is a hydrogenated-tallow group trimethylene diamines; Fatty acid methyl ester ethoxylate is the cotton oil acid FMEE; Stablizer is an ammonium sulfate; Additive is a Natvosol.Its preparation process is: the pitch in the proportioning is heated to 180 ℃, the additive Natvosol is dissolved in 30 ℃ of water, then other composition is dissolved in the hydroxyethyl cellulose aqueous solution, form mixed aqueous solution, will add heated bitumen and this mixed aqueous solution at last and together promptly make emulsified asphalt product among the present invention by emulsifying device.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 4: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is triumph No. 100 pitches (penetration degree is 103, and unit is 1/10mm); Cats product is an octadecyl trimethyl ammonium chloride; Fatty acid methyl ester ethoxylate is a hydrogenation oleic acid FMEE; Stablizer is a calcium chloride; Additive is a polymaleic anhydride.Its preparation process is: the pitch in the proportioning is heated to 130 ℃, the additive polymaleic anhydride is dissolved in 80 ℃ of water, then other composition is dissolved in the polymaleic anhydride aqueous solution, form mixed aqueous solution, will add heated bitumen and this mixed aqueous solution at last and together promptly make emulsified asphalt product among the present invention by emulsifying device.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 5: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 60 pitches (penetration degree is 611/10mm); Cats product is a lauryl amine; Fatty acid methyl ester ethoxylate is the methyl dodecanoate ethoxylate; Stablizer does not have; Additive is a polyoxyethylene glycol.Its preparation process is: the pitch in the proportioning is heated to 150 ℃, then that other composition in the proportioning is soluble in water, form mixed aqueous solution and be heated to 40~90 ℃, to add heated bitumen and this mixed aqueous solution at last together by behind the emulsifying device, be cooled to room temperature under stirring, make product of the present invention.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 6: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 80 pitches (penetration degree is 811/10mm); Cats product is tetradecylamine (claiming myristyl amine again); Fatty acid methyl ester ethoxylate is TETRADECONIC ACID (claiming a tetradecanoic acid again) FMEE; Stablizer does not have; Additive is an Xylo-Mucine.Its preparation process is: the pitch in the proportioning is heated to 120 ℃, then that other composition in the proportioning is soluble in water, form mixed aqueous solution and be heated to 40~90 ℃, to add heated bitumen and this mixed aqueous solution at last together by behind the emulsifying device, be cooled to room temperature under stirring, make product of the present invention.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 7: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 60 pitches (penetration degree is 611/10mm); Cats product is hexadecylamine (claiming palmitamide again); Fatty acid methyl ester ethoxylate is palmitic acid (claiming a palmitinic acid again) FMEE; Stablizer is a sal epsom; Additive is a stearyl alcohol.Its preparation process is: the pitch in the proportioning is heated to 150 ℃, then other composition is heated to 60 ℃ soluble in water, form mixed aqueous solution and be heated to 60~90 ℃, to add heated bitumen and this mixed aqueous solution at last together by behind the emulsifying device, be cooled to room temperature under stirring, make product of the present invention.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 8: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 110 pitches (penetration degree is 1081/10mm); Cats product is hydrogenated tallow amine (claiming stearylamine again); Fatty acid methyl ester ethoxylate is stearic acid (claiming a stearic acid again) FMEE; Stablizer is a sal epsom; Additive is a polyacrylamide.Its preparation process is: the pitch in the proportioning is heated to 150 ℃, then other composition is heated to 60 ℃ soluble in water, form mixed aqueous solution and be heated to 60~90 ℃, to add heated bitumen and this mixed aqueous solution at last together by behind the emulsifying device, be cooled to room temperature under stirring, make product of the present invention.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 9: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 120 pitches (penetration degree is 1191/10mm); Cats product is docosyl amine (a Cheng Shan Yu amine again); Fatty acid methyl ester ethoxylate is behenic acid (Cheng docosoic again) FMEE; Stablizer is a magnesium chloride; Additive is a polyacrylamide.Its preparation process is: the pitch in the proportioning is heated to 170 ℃, then other composition is heated to 65 ℃ soluble in water, form mixed aqueous solution and be heated to 60~90 ℃, to add heated bitumen and this mixed aqueous solution at last together by behind the emulsifying device, be cooled to room temperature under stirring, make product of the present invention.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 10: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 100 pitches (penetration degree is 1011/10mm); Cats product is the soybean oleyl amine; Fatty acid methyl ester ethoxylate is the oleic acid FMEE; Stablizer is magnesium chloride and strontium chloride; Additive is a polyacrylamide.Its preparation process is: the pitch in the proportioning is heated to 170 ℃, then other composition is heated to 65 ℃ soluble in water, form mixed aqueous solution and be heated to 60-90 ℃, to add heated bitumen and this mixed aqueous solution at last together by behind the emulsifying device, be cooled to room temperature under stirring, make product of the present invention.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Embodiment 11: a kind of emulsified bitumen, its prescription is formed as table 1.Its medium pitch is No. 100 pitches (penetration degree is 1021/10mm); Cats product is a N-aminoethyl acid amides; Fatty acid methyl ester ethoxylate is behenic acid (Cheng docosoic again) FMEE; Stablizer is a magnesium chloride; Additive is a polyacrylamide.Its preparation process is: the pitch in the proportioning is heated to 170 ℃, then other composition is heated to 65 ℃ soluble in water, form mixed aqueous solution and be heated to 60~90 ℃, to add heated bitumen and this mixed aqueous solution at last together by behind the emulsifying device, be cooled to room temperature under stirring, make product of the present invention.The Performance Detection standard of products obtained therefrom and detection method are with embodiment 1, and detected result sees Table 2.
Table 1: the prescription of each embodiment of product of the present invention is formed
Form (by weight percentage) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 |
Pitch | 50 | 52 | 48 | 40 | 55 | 22 | 28 | 43 | 38 | 35 | 30 |
Cats product | 2 | 2.5 | 5 | 6 | 2.5 | 15 | 8 | 3 | 4 | 6 | 1 |
Fatty acid methyl ester ethoxylate | 6 | 1 | 5 | 13 | 3 | 13 | 18 | 10 | 12 | 14 | 20 |
Stablizer | 0.05 | 0.01 | 0.05 | 0.01 | 0 | 0 | 0.15 | 0.2 | 0.15 | 0.15 | 0.15 |
Additive | 2 | 0.2 | 0.05 | 0.5 | 1.5 | 8.0 | 7 | 4 | 5 | 5.5 | 6 |
Water | Surplus | Surplus | Surplus | Surplus | Surplus | Surplus | Surplus | Surplus | Surplus | Surplus | Surplus |
Table 2: the performance test results of each embodiment products obtained therefrom among the present invention
Performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Performance index | |
Screenings (1.18mm), wt% | 0.03 | 0.02 | 0.05 | 0.01 | Be not more than 0.1 | |
Low-temperature stability (5 ℃) | No coarse particles or block | No coarse particles or block | No coarse particles or block | No coarse particles or block | ||
Package stability, (1 day, 25 ℃) | 0.02 | 0.02 | 0.01 | 0.01 | Be not more than 1 | |
The evaporation of residual properties | Penetration degree (25 ℃, 1/10mm) | 88 | 116 | 63 | 100 | 60-120 |
Ductility (cm, 15 ℃) | 108 | 110 | 102 | 110 | ≥100 | |
Solubleness (trieline) | 99 | 99 | 100 | 99 | ≥97% |
Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 |
0.03 | 0.02 | 0.05 | 0.01 | 0.02 | 0.03 | 0.02 |
No coarse particles or block | No coarse particles or block | No coarse particles or block | No coarse particles or block | No coarse particles or block | No coarse particles or block | No coarse particles or block |
0.02 | 0.02 | 0.01 | 0.01 | 0.03 | 0.04 | 0.03 |
68 | 102 | 96 | 109 | 110 | 105 | 110 |
102 | 110 | 112 | 112 | 103 | 110 | 107 |
99 | 99 | 100 | 99 | 99 | 98 | 99 |
Claims (7)
1, a kind of emulsified bitumen, it is made up of pitch, tensio-active agent, auxiliary agent and water, and wherein each components contents is:
Pitch: 22~55%
Tensio-active agent: cats product 1.0~15%
Nonionogenic tenside 1.0~20%
Auxiliary agent: 0.1~8%
Surplus is a water
All by weight percentage.
2, emulsified bitumen as claimed in claim 1 is characterized in that: described pitch be petroleum pitch or/and coal-tar pitch or/and rock asphalt, penetration degree is 40~140, its unit is 1/10mm; Described cats product is one or more in alkyl amine, alkylamide, imidazolines, alkyl propylene diamine class, aminated lignin class, the quaternary ammonium salt; Described nonionogenic tenside is one or more in the fatty acid methyl ester ethoxylate class; Described auxiliary agent is stablizer and/or additive.
3, emulsified bitumen as claimed in claim 1 or 2 is characterized in that: the amount of described nonionogenic tenside is 1.0~18%; The amount of described auxiliary agent is 0.2~8%, and the amount of stablizer is 0~0.2% in the described auxiliary agent; All by weight percentage.
4, emulsified bitumen as claimed in claim 2 is characterized in that: described penetration of bitumens is 60~120; Described alkyl amine is 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; Described alkylamide is N-aminoethyl acid amides and/or octadecyl amide group triamine; Described imidazolines is 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 and/or 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2 hydrochloride; Described alkyl propylene diamine class is one or more in stearyl trimethylene diamines, tallow base trimethylene diamines, hydrogenated-tallow group trimethylene diamines and the lard base trimethylene diamines; Described aminated lignin class is commercially available with in xylogen and the polyethylene polyamine material synthetic emulsifying agent one or more; Described quaternary ammonium salt is one or more in 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, the stearyl dimethyl benzyl ammonium chloride; The carbon chain lengths of the lipid acid in the described fatty acid methyl ester ethoxylate class is the single carbochain of 10~26 carbon atoms or the combination of multiple carbochain, and the oxyethane number of addition is in 3~500 one or more in the fatty acid methyl ester ethoxylate molecule; Described stablizer is one or more in ammonium salt, magnesium salts, calcium salt, strontium salt and the molysite; Described additive is one or more in guar gum, carboxymethyl cellulose salt, Natvosol, alcohols, polymaleic anhydride, the polyacrylamide.
5, emulsified bitumen as claimed in claim 4 is characterized in that: described guar gum is the positively charged ion guar gum; Described carboxymethyl cellulose salt be meant its sodium salt or/and sylvite or/and ammonium salt; Described alcohols is that carbonatoms is one or more in 1~100 the alcohol, polyvinyl alcohol, polyoxyethylene glycol.
6, as the described Preparation of Emulsification Asphalt method of arbitrary claim in the claim 1~5, it is characterized in that:, be heated to 110~180 ℃ the pitch of described proportioning; Tensio-active agent, auxiliary agent and the water of described proportioning are mixed the formation aqueous solution under 30~95 ℃ temperature; Then the aqueous solution emulsification of the pitch after the described heating with described tensio-active agent and auxiliary agent is got product.
7, Preparation of Emulsification Asphalt method as claimed in claim 6 is characterized in that: the pitch after the described heating is cooled to room temperature under stirring and gets product after the aqueous solution emulsification of described tensio-active agent and auxiliary agent.
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CN2007101499958A CN101153118B (en) | 2007-05-17 | 2007-09-30 | Emulsified asphalt |
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