CN103059583A - Emulsified asphalt and preparation method thereof - Google Patents
Emulsified asphalt and preparation method thereof Download PDFInfo
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- CN103059583A CN103059583A CN2011103157063A CN201110315706A CN103059583A CN 103059583 A CN103059583 A CN 103059583A CN 2011103157063 A CN2011103157063 A CN 2011103157063A CN 201110315706 A CN201110315706 A CN 201110315706A CN 103059583 A CN103059583 A CN 103059583A
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Abstract
The invention discloses an emulsified asphalt and a preparation method thereof. A formula of the emulsified asphalt comprises asphalt, a cationic emulsifier, an anionic emulsifier, a thickener, a stabilizer, a water reducing agent and water. According to the invention, the water reducing agent is added to asphalt emulsion as a component for not only playing the role of the reducing agent itself, reducing operation steps during construction, but also for cooperating with the cationic surfactant and the anionic surfactant, thus obviously improving sieve residual amount, storage stability and especially indexes of cement miscibility of the emulsified asphalt. The emulsified asphalt provided by the invention is used for cement asphalt mortar pouring of a plate-type ballastless track during construction of a high-speed railway.
Description
Technical field
The present invention relates to a kind of emulsified bitumen and preparation method thereof, particularly a kind of cement asphalt mortar special-purpose emulsifying pitch and preparation method thereof.Plate-type ballastless track cement injection bituminous mortar (being called for short the CA mortar) when emulsified bitumen of the present invention is used for building high-speed railway.
Background technology
Along with railway construction level and raising that railway transportation capability is required, need to build high-speed railway and intercity light rail, the stationarity when improving the train high-speed cruising and the noise that produces because of concussion when alleviating train operation adopt the plate-type ballastless track technology.The plate-type ballastless track technology is with two track layings (title track plates) on the reinforced cement concrete plate, below track plates, need to lay the thick buffer layer of 3-5cm, this buffer layer is to be made of emulsified bitumen, cement, fine sand and other mineral material, form cement asphalt mortar (Cement Asphalt mortar is called for short the CA mortar).In the CA mortar, emulsified bitumen is key material, utilizes the certain vibration energy of its flexible absorbent, the noise that produces because of concussion when alleviating train and advancing, and can improve stationarity and the comfortableness of train operation.The performance of emulsified bitumen directly affects serviceability and the endurance quality of cement asphalt mortar.Require emulsified bitumen not only will have satisfactory stability, also to good consistency be arranged with dry blends such as cement, fine sands, can not affect the hydration reaction speed of cement, for guaranteeing that mortar can pour into well, require the mortar of preparation also will have in a long time certain flowability.In addition, for homogeneous after the mortar curing that guarantees to pour into, can not produce air pocket during the dry blend mixs such as emulsified bitumen and cement, fine sand.For guaranteeing enough water to be arranged for cement generation hydration reaction in the solidification process of cement asphalt mortar after perfusion, need to add in addition water, but amount of water is too much or emulsifiers formula excreting water phenomenon can occur when improper.
CN 200710149995.8 discloses a kind of emulsified bitumen, and it is comprised of pitch, tensio-active agent, auxiliary agent and water, and wherein tensio-active agent adopts the mixture of ionogenic surfactant and nonionic surface active agent.CN 200710078480.3 discloses a kind of emulsified bitumen and preparation method thereof, it is comprised of pitch, tensio-active agent, auxiliary agent and water, and tensio-active agent is to adopt that cationic surfactant and nonionic surface active agent are composite to carry out emulsification to pitch and obtain emulsified bitumen.CN 200910076818.0 discloses a kind of vertical linking-board type non-fragment orbit cement asphalt mortar special-purpose emulsifying pitch, employing be that anionic emulsifier, stablizer, auxiliary agent etc. carry out emulsification to pitch.The emulsified bitumen of aforesaid method preparation adds water consumption in order to reduce, and avoids occuring behind the CA mortar injection phenomenon of bleeding, generally adding water reducer when mixing CA mortar processed.In mortar mix process, in order to eliminate larger bubble and to reduce the generation of foam, generally when mixing CA mortar processed, add defoamer, such as CN 200910076819.5.Preparation mortar process is carried out in a kind of mixing truck, belong to batch operation, because the consumption of defoamer and water reducer is seldom, metering is difficult to precise control, even and rapid stirring, the two distribution in mortar also is difficult to evenly, in case measure wrong or skewness will be influential to mortar character, main manifestations is that froth breaking is not thorough, during pouring mortar, can below four angles of track plates, pile up more bubble, cause the undercapacity in bight after the moulding.In addition, in order to be unlikely to breakdown of emulsion when the high-speed stirring after making high-iron emulsified asphalt and a large amount of cement, fine sand mixing, and have the intensity of certain anti-physical disturbance, generally when producing high-iron emulsified asphalt, the consumption of tensio-active agent all can be very large, so, when the production of high-iron emulsified asphalt and entrucking, just produce easily a large amount of foams, occupy the very large space of products pot, if misoperation, the emulsified bitumen foam is emerged from the tank mouth easily, makes troubles to production and transport.In addition, if the foam of emulsified bitumen is too much, behind lather collapse, can form the thick skin of one deck, this skin is to be linked behind lather collapse by the pitch composition on the foam, even stir and also can't make again its emulsification, so can affect emulsified bitumen character, especially upper residual content index is sieved in impact, even also causes easily the breakdown of emulsion of emulsified bitumen.In addition, add at the construction field (site) defoamer and water reducer, complex operation step affects construction speed, increases trouble also for the structure design of mixing truck.
Summary of the invention
For the deficiencies in the prior art, the invention provides that a kind of and cement mixing are good, stability in storage is good, few, saving execute-in-place step of residual content on the sieve, the emulsified bitumen of enhancing productivity and preparation method thereof.Plate-type ballastless track cement injection bituminous mortar when this emulsified bitumen is particularly suitable for building high-speed railway.
Emulsified bitumen of the present invention, its prescription comprises: pitch, cationic emulsifier, anionic emulsifier, thickening material, stablizer, water reducer, water; Take the weight of emulsified bitumen as benchmark:
Pitch 55.0%～68.0%,
Cationic emulsifier 0.5%～2.0%,
Anionic emulsifier 0.5%～2.0%,
Thickening material 0.01%～0.05%,
Stablizer 0.05%～0.25%,
Water reducer 0.1%～0.7%,
Water 30.0%～40.0%;
Used water reducer can be one or more in lignin sulfonate, naphthalenesulfonate formaldehyde condensation compound, the condensate of melamine and formaldehyde.
Used cationic emulsifier comprises one or more in alkyl amine, amides, imidazolines, aminated lignin class, the quaternary ammonium salt emulsifying agent.Quaternary ammonium salt wherein can be 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.
Used anionic emulsifier is one or more in the sulfuric ester salt, is preferably in sodium alkyl sulfate, polyoxyethylenated alcohol sodium sulfate, the aliphatic amine polyoxyethylene sodium sulfate one or more.The alkyl carbon number of described sodium alkyl sulfate is 12 ~ 18.In the described polyoxyethylenated alcohol sodium sulfate, the carbon number of Fatty Alcohol(C12-C14 and C12-C18) is 14 ~ 20, and polyoxyethylene molecule number is 1 ~ 4.In the described aliphatic amine polyoxyethylene sodium sulfate, the carbon number of aliphatic amide is 14 ~ 20, and polyoxyethylene molecule number is 1 ~ 4.
Used thickening material is Mierocrystalline cellulose, can be in Walocel MT 20.000PV, carboxyethyl cellulose, the hydroxypropylcellulose one or more.
Described stablizer is inorganic salt, comprises in calcium chloride, magnesium chloride, bariumchloride, the ammonium chloride etc. one or more.
In the emulsified bitumen of the present invention, preferred amphoteric ionic surfactant and/or the nonionic surface active agent of adding, take the weight of emulsified bitumen as benchmark, amphoteric ionic surfactant is 0.1% ~ 0.7%, and the nonionic surface active agent consumption is 0.1% ~ 0.7%.
Used amphoteric ion type emulsifying agent is one or more in aminocarboxylic acid and the salt thereof, can be in N-cocoyl-β-alanine sodium, N-cocoyl-β-alanine, N-lauryl-β-alanine, N-myristyl-β-alanine, N-tallow-β-imido disodium beclomethasone, the N-lauryl-β-imido disodium beclomethasone one or more.
Used nonionic emulsifier is one or more in fatty alcohol-polyoxyethylene ether and the alkylphenol polyoxyethylene.Wherein, fatty alcohol-polyoxyethylene ether can be 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, and wherein polyoxyethylene molecule number is 15 ~ 25 in the fatty alcohol-polyoxyethylene ether.Alkylphenol polyoxyethylene can be one or both in polyoxyethylene octylphenol ether, the polyoxyethylene nonylphenol ether, and wherein polyoxyethylene molecule number is 15 ~ 25 in the alkylphenol polyoxyethylene.
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 60～120(1/10mm).
Emulsified bitumen of the present invention can also contain defoamer, and take the weight of emulsified bitumen as benchmark, the content of defoamer is 0.01%～0.05%.Used defoamer is one or more in silicone emulsion, the fatty acid ester compounded thing of higher alcohols, polyoxyethylene polyoxypropylene tetramethylolmethane ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, the polypropylene glycerol aether etc.
The preparation method of cement asphalt mortar special-purpose emulsifying pitch of the present invention is: first that asphalt heating to 110 ℃～165 ℃ is for subsequent use; Jointly soluble in water cationic emulsifier, anionic emulsifier, thickening material, stablizer, and then add water reducer, stir, be prepared into soap lye and keep temperature be 40 ℃～65 ℃ for subsequent use; Above-mentioned soap lye and heated bitumen are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain emulsified bitumen.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 such as water cooler, then go out system.
Among the preparation method of emulsified bitumen of the present invention, can be jointly soluble in water cationic surfactant, aniorfic surfactant, amphoteric ionic surfactant, nonionic surface active agent, thickening material, stablizer when the preparation soap lye, and then adding water reducer, stir, be prepared into soap lye and keep temperature be 40 ℃～65 ℃ for subsequent use.
In the inventive method, preferably add defoamer, defoamer before water reducer adds, add afterwards or join in the system simultaneously.
Emulsified bitumen of the present invention has following advantage:
1, the present invention is added to water reducer in the emulsified bitumen as a component, not only can with the cement mix time, play the effect of water reducer itself, operation steps when reducing construction, but also can utilize itself surfactivity, use with negatively charged ion and cats product collocation, when producing emulsified bitumen of the present invention, play and help emulsifying effect, improve emulsifying effectiveness, can reduce dosage of surfactant, reduce the emulsifying agent cost.And, to residual content on the sieve of emulsified bitumen, stability in storage, especially the cement mixing index had significantly improve.Under the high-speed rail plate during cement injection bituminous mortar used cement be short-term strength cement, so comparatively strict to the cement mixing requirement of emulsified bitumen.Emulsified bitumen of the present invention can obviously improve the cement mixing index owing to added water reducer.
2, the present invention utilizes the special property of defoamer, make emulsified bitumen when production and entrucking, be difficult for producing more foam, avoid too much causing the phenomenon of emerging from the tank mouth because of foam, simultaneously also avoid high-iron emulsified asphalt because of the skinning that foam too much causes, be conducive to improve residual content index on the sieve of emulsified bitumen.
3, the present invention adds water reducer and defoamer when the preparation emulsified bitumen among the emulsified bitumen in advance, add in the time of not only can solving at the construction field (site) that caused metering is inaccurate, the problem of the two skewness in mortar, and the whipping step can save the working-yard and add defoamer and water reducer the time, enhance productivity.
4, the present invention is owing to add water reducer in the emulsifier aqueous solution in advance, water reducer is evenly distributed in emulsified bitumen, when with dry blend mixs such as cement, fine sands, water reducer is easy to be uniformly dispersed, fully contact with cement, fine sand etc., water-reducing effect is obvious, has avoided the on-the-spot fashionable stirring uneven phenomenon that adds.When minimizing adds water consumption, effectively avoided behind the CA mortar injection excreting water phenomenon occuring, improved the workability of emulsified bitumen and cement and fine sand, improved the flowability of CA mortar, make the CA mortar injection full, stressed even after the moulding.
5, the present invention is owing to add defoamer in the emulsifier aqueous solution in advance, defoamer is evenly distributed in emulsified bitumen, so that emulsified bitumen is with dry blend mixs such as cement, fine sands the time, defoamer wherein can fully contact with various components, can effectively eliminate air pocket, make after the moulding of CA mortar quality fine and close, evenly, avoided the scene to add and fashionablely produced the air pocket phenomenon because stirring inequality.
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 108(1/10mm) LIAOHE CRUDE straight-run pitch 6750g, be heated to 115 ℃ for subsequent use.Get cationic emulsifier palmityl trimethyl ammonium chloride 50g, anionic emulsifier fat (18) pure polyoxyethylene (3) ether sodium sulfate 50 g, amphoteric ion type emulsifying agent N-cocoyl-β-alanine sodium 10 g, nonionic emulsifier oleic alcohol polyoxyethylene (20) ether 10g, carboxymethyl cellulose 1 g, calcium chloride 5 g, jointly be dissolved in being not less than in 45 ℃ the water of 3113g, after fully dissolving, add methyl-silicone oil (303-20) 1g, calcium lignin sulphonate 10 g stir again, it is for subsequent use to be prepared into soap lye, and makes temperature keep being not less than 40 ℃.Then soap lye and pitch are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when making emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
Embodiment 2
Getting penetration degree is 98(1/10mm) Oman crude oil solvent deoiling pitch 6000g of Refinery of Maoming Petrochemical Corporation, be heated to 125 ℃ for subsequent use.Get cationic emulsifier hydrogenated-tallow group propylene triamine 90g, anionic emulsifier fat (18) amine polyoxyethylene (4) sodium sulfate 195g, amphoteric ion type emulsifying agent N-tallow-β-imido disodium beclomethasone 69 g, nonionic emulsifier octyl phenol polyoxy ethene (20) ether 50g, carboxyethyl cellulose 5 g, ammonium chloride 15 g, jointly be dissolved in 65 ℃ the water of 3531g, after emulsifying agent fully dissolves, add again naphthalene sulfonic acidformaldehyde condensation product 40g, polyoxyethylene oxypropylene glycerine (GPE30) 5g stirs, and it is for subsequent use and to keep temperature be 65 ℃ to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when making emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
Embodiment 3
Getting penetration degree is 62(1/10mm) the Kuwait Crude Oil oxidized bitumen 5550g of Qilu Petrochemical Company, be heated to 155 ℃ for subsequent use.Get cationic emulsifier aminated lignin (RH-CO1) emulsifying agent 195g, anionic emulsifier sodium lauryl sulphate 125 g, amphoteric ion type emulsifying agent N-lauryl-β-alanine 40g, nonionic emulsifier lauryl alcohol polyethylene glycol oxide (20) ether 40g, Natvosol 3 g, magnesium chloride 25g, jointly be dissolved in 55 ℃ the water of 3950g, after emulsifying agent fully dissolves, add again sulfonated melamine compound condenses 69 g, higher alcohols fatty acid ester (C18, concentration 30%) 3g, stir, it is for subsequent use and to keep temperature be 55 ℃ to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when making emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
Embodiment 4
Getting penetration degree is 118(1/10mm) SBS modifying asphalt 5800g, be heated to 162 ℃ for subsequent use.Get 125 g of cationic emulsifier 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2(M-1), anionic emulsifier fat (20) pure polyoxyethylene (4) ether sodium sulfate 90g, amphoteric ion type emulsifying agent N-lauryl-β-imido disodium beclomethasone 50g, nonionic emulsifier Nonyl pheno (20) ether 69g, hydroxypropylcellulose 2 g, bariumchloride 10 g, be dissolved in the 3827g water, after emulsifying agent fully dissolves, add again thionamic acid sodium 25 g, polypropylene glycerol aether 2g stirs, and it is for subsequent use and to keep temperature be 60 ℃ to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when making emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
Embodiment 5
Getting penetration degree is 108(1/10mm) LIAOHE CRUDE straight-run pitch 6500g, be heated to 115 ℃ for subsequent use.Get cationic emulsifier palmityl trimethyl ammonium chloride 150g, anionic emulsifier fat (18) pure polyoxyethylene (3) ether sodium sulfate 150 g, carboxymethyl cellulose 4 g, calcium chloride 20g is dissolved in the water that 3120g is not less than 45 ℃ jointly, after fully dissolving, add methyl-silicone oil (303-20) 4g, calcium lignin sulphonate 52 g stir again, it is for subsequent use to be prepared into soap lye, and makes temperature keep being not less than 40 ℃.Then soap lye and pitch are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when making emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
Comparative example 1
Getting penetration degree is 108(1/10mm) LIAOHE CRUDE straight-run pitch 6750g, be heated to 115 ℃ for subsequent use.Get cationic emulsifier palmityl trimethyl ammonium chloride 50g, anionic emulsifier fat (18) pure polyoxyethylene (3) ether sodium sulfate 50 g, amphoteric ion type emulsifying agent N-cocoyl-β-alanine sodium 10 g, nonionic emulsifier oleic alcohol polyoxyethylene (20) ether 10g, carboxymethyl cellulose 1 g, calcium chloride 5 g, jointly be dissolved in the water that 3124g is not less than 45 ℃, stir, it is for subsequent use to be prepared into soap lye, and makes temperature keep being not less than 40 ℃.Then soap lye and pitch are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when making emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, flow out from the outlet of system, obtain emulsified bitumen.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
Comparative example 2
Getting penetration degree is 98(1/10mm) Oman crude oil solvent deoiling pitch 6000g of Refinery of Maoming Petrochemical Corporation, be heated to 125 ℃ for subsequent use.Get cationic emulsifier hydrogenated-tallow group propylene triamine 90g, anionic emulsifier fat (18) amine polyoxyethylene (4) sodium sulfate 195g, amphoteric ion type emulsifying agent N-tallow-β-imido disodium beclomethasone 69 g, nonionic emulsifier octyl phenol polyoxy ethene (20) ether 50g, carboxyethyl cellulose 5 g, ammonium chloride 15g is dissolved in 65 ℃ the water of 3576g jointly, stir, it is for subsequent use and to keep temperature be 65 ℃ to be prepared into soap lye.Then soap lye and pitch are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when making emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, flow out from the outlet of system, obtain emulsified bitumen.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
With the emulsified bitumen of above-described embodiment 1～embodiment 5 directly according to certain ratio, high ferro dedicated mortar dry mash with compositions such as cement, fine sand, aluminium powder, swelling agent, air entrapment agents stirs, make cement asphalt mortar, the character that records mortar sees Table 3.Add water reducer and the defoamer of respective numbers with reference to embodiment 1 and embodiment 2 respectively during with the emulsified bitumen of comparative example 1 and comparative example 2 and high ferro dedicated mortar dry mash mix, stir, make cement asphalt mortar, the character that records mortar sees Table 3.
Table 1 emulsified bitumen proportioning
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The basic asphalt type | Straight-run pitch | Solvent deoiling pitch | Oxidized bitumen |
| Penetration degree, 1/10mm | 108 | 98 | 62 |
| Asphalt content/g | 6750 | 6000 | 5550 |
| Emulsifier/g | ? | ? | ? |
| -positively charged ion | 50 | 90 | 195 |
| -negatively charged ion | 50 | 195 | 125 |
| -zwitter-ion | 10 | 69 | 40 |
| -nonionic | 10 | 50 | 40 |
| Thickening material consumption/g | 1 | 5 | 3 |
| Stabilizing agent dosage/g | 5 | 15 | 25 |
| Water reducer consumption/g | 10 | 40 | 69 |
| Defoamer consumption/g | 1 | 5 | 3 |
| Water consumption/g | 3113 | 3531 | 3950 |
Table 1 is continuous
| Project | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 |
| The basic asphalt type | Modifying asphalt | Straight-run pitch | Straight-run pitch | Solvent deoiling pitch |
| Penetration degree, 1/10mm | 118 | 108 | 108 | 98 |
| Asphalt content/g | 5800 | 6500 | 6750 | 6000 |
| Emulsifier/g | ? | ? | ? | ? |
| -positively charged ion | 125 | 150 | 50 | 90 |
| -negatively charged ion | 90 | 150 | 50 | 195 |
| -zwitter-ion | 50 | - | 10 | 69 |
| -nonionic | 69 | - | 10 | 50 |
| Thickening material consumption/g | 2 | 4 | 1 | 5 |
| Stabilizing agent dosage/g | 10 | 20 | 5 | 15 |
| Water reducer consumption/g | 25 | 52 | - | - |
| Defoamer consumption/g | 2 | 4 | - | - |
| Water consumption/g | 3827 | 3120 | 3124 | 3576 |
Table 2 emulsified bitumen character
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Index request | Detection method |
| Residual content/% on the sieve | 0.01 | 0.01 | 0.02 | ≤0.1 | JTJ T0652 |
| Viscosity Engler | 13 | 9 | 8 | 3～15 | JTJ T0622 |
| Stability in storage/% | ? | ? | ? | ? | ? |
| 1 day | 0.1 | 0.1 | 0.1 | ≤1 | JTJ T0655 |
| 5 days | 3 | 3 | 2 | ≤5 | JTJ T0655 |
| Low-temperature storage experiment (5 ℃) | Without coarse grain, without caking | Without coarse grain, without caking | Without coarse grain, without caking | Without coarse grain, without caking | JTJ T0656 |
| Cement mixing | 0.4 | 0.3 | 0.2 | ≤2.0 | JTJT0657 |
| The evaporation of residual properties | ? | ? | ? | ? | ? |
| Penetration degree, 1/10mm | 109 | 98 | 63 | 60～120 | GB/T4509 |
| Ductility (25 ℃)/cm | ＞150 | ＞150 | 110 | ≥100 | GB/T4508 |
| Ductility (5 ℃)/cm | 68 | 45 | 27 | ≥20 | GB/T4508 |
| Solubleness/% | 99.8 | 99.8 | 99.9 | ≥99 | JTJ T0607 |
| The emulsified bitumen state | Fine and smooth | Fine and smooth | Fine and smooth | ? | ? |
Table 2 is continuous
| Project | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | Index request | Detection method |
| Residual content/% on the sieve | 0.01 | 0.03 | 0.95 | 0.84 | ≤0.1 | JTJ T0652 |
| Viscosity Engler | 10 | 12 | 13 | 9 | 3～15 | JTJ T0622 |
| Stability in storage/% | ? | ? | ? | ? | ? | ? |
| 1 day | 0.1 | 0.2 | 1.7 | 1.5 | ≤1 | JTJ T0655 |
| 5 days | 2 | 1 | 9 | 7 | ≤5 | JTJ T0655 |
| Low-temperature storage experiment (5 ℃) | Without coarse grain, without caking | Without coarse grain, without caking | Seedy, caking is arranged | Seedy, caking is arranged | Without coarse grain, without caking | JTJ T0656 |
| Cement mixing | 0.2 | 0.2 | 3.8 | 3.4 | ≤2.0 | JTJT0657 |
| The evaporation of residual properties | ? | ? | ? | ? | ? | ? |
| Penetration degree, 1/10mm | 118 | 107 | 108 | 98 | 60～120 | GB/T4509 |
| Ductility (25 ℃)/cm | ＞150 | ＞150 | ＞150 | ＞150 | ≥100 | GB/T4508 |
| Ductility (5 ℃)/cm | 90 | 70 | 68 | 45 | ≥20 | GB/T4508 |
| Solubleness/% | 99.6 | 99.7 | 99.8 | 99.8 | ≥99 | JTJ T0607 |
| The emulsified bitumen state | Fine and smooth | Fine and smooth | Seedy, skinning is arranged | Seedy, skinning is arranged | ? | ? |
By as seen from Table 2, in advance water reducer and defoamer are participated in the preparation of emulsified bitumen as emulsifier component, for residual content, stability in storage, cement mixing on the sieve of emulsified bitumen significantly improvement is arranged, especially more meaningful to improving cement mixing, be conducive to mix, perfusion and the moulding of mortar.
Table 3 cement asphalt mortar character
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | CA mortar index request |
| The mortar state | Without air pocket, homogeneous full, bleeding not | Without air pocket, homogeneous full, bleeding not | Without air pocket, homogeneous full, bleeding not | ? |
| Degree of mobilization/s | 24 | 22 | 18 | 16～26 |
| Operable time/min | 45 | 67 | 100 | ≥30 |
| Resolution/% | 1.0 | 0.8 | 0.9 | ≤3 |
| Air content/% | 11.2 | 8.5 | 8.9 | 8～12 |
| Bleeding rate/% | 0 | 0 | 0 | 0 |
| Rate of expansion/% | 1.8 | 1.9 | 1.6 | 1～3 |
| Ultimate compression strength/MPa | ? | ? | ? | ? |
| 1 day | 0.19 | 0.25 | 0.24 | ≥0.1 |
| 7 days | 1.46 | 1.85 | 1.92 | ≥0.7 |
| 28 days | 1.98 | 2.19 | 2.26 | 1.8～2.5 |
| Young's modulus/MPa | 198 | 255 | 262 | 100～300 |
Table 3 is continuous
| Project | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | CA mortar index request |
| The mortar state | Without air pocket, homogeneous full, bleeding not | Without air pocket, homogeneous full, bleeding not | Air pocket is arranged, and quality is uneven, and bleeding is obvious | Air pocket is arranged, and quality is uneven, a small amount of bleeding | ? |
| Degree of mobilization/s | 20 | 21 | 35 | 29 | 16～26 |
| Operable time/min | 89 | 76 | 17 | 24 | ≥30 |
| Resolution/% | 0.7 | 0.8 | 3.3 | 2.5 | ≤3 |
| Air content/% | 10.2 | 9.2 | 28 | 15.7 | 8～12 |
| Bleeding rate/% | 0 | 0 | 6 | 3 | 0 |
| Rate of expansion/% | 1.7 | 2.0 | Subside | 0.4 | 1～3 |
| Ultimate compression strength/MPa | ? | ? | ? | ? | ? |
| 1 day | 0.24 | 0.22 | 0.09 | 0.10 | ≥0.1 |
| 7 days | 1.81 | 1.79 | 0.52 | 0.98 | ≥0.7 |
| 28 days | 2.08 | 2.10 | 1.67 | 1.72 | 1.8～2.5 |
| Young's modulus/MPa | 243 | 251 | 359 | 97 | 100～300 |
By as seen from Table 3, behind the emulsified bitumen of embodiment 1～embodiment 5 and the high ferro dedicated mortar dry powder mix, operable time prolongs, and is conducive to mortar mix, perfusion and moulding.Effectively improve bleeding rate, be conducive to guarantee the hydration reaction of cement.Make the indexs such as air content, degree of mobilization, resolution, ultimate compression strength meet the high-speed rail construction code requirement.
Claims (16)
1. emulsified bitumen, its prescription comprises: pitch, cationic emulsifier, anionic emulsifier, thickening material, stablizer, water reducer, water; Take the weight of emulsified bitumen as benchmark:
Pitch 55.0%～68.0%,
Cationic emulsifier 0.5%～2.0%,
Anionic emulsifier 0.5%～2.0%,
Thickening material 0.01%～0.05%,
Stablizer 0.05%～0.25%,
Water reducer 0.1%～0.7%,
Water 30.0%～40.0%;
Used water reducer is one or more in lignin sulfonate, naphthalenesulfonate formaldehyde condensation compound, the condensate of melamine and formaldehyde.
2. according to emulsified bitumen claimed in claim 1, it is characterized in that used cationic emulsifier comprises one or more in alkyl amine, amides, imidazolines, aminated lignin class, the quaternary ammonium salt emulsifying agent.
3. according to emulsified bitumen claimed in claim 2, it is characterized in that described quaternary ammonium salt emulsifying agent is 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.
4. according to emulsified bitumen claimed in claim 1, it is characterized in that used anionic emulsifier is one or more in the sulfuric ester salt.
5. according to emulsified bitumen claimed in claim 1, it is characterized in that used anionic emulsifier is one or more in sodium alkyl sulfate, polyoxyethylenated alcohol sodium sulfate, the aliphatic amine polyoxyethylene sodium sulfate; The alkyl carbon number of described sodium alkyl sulfate is 12 ~ 18; In the described polyoxyethylenated alcohol sodium sulfate, the carbon number of Fatty Alcohol(C12-C14 and C12-C18) is 14 ~ 20, and polyoxyethylene molecule number is 1 ~ 4; In the described aliphatic amine polyoxyethylene sodium sulfate, the carbon number of aliphatic amide is 14 ~ 20, and polyoxyethylene molecule number is 1 ~ 4.
6. according to emulsified bitumen claimed in claim 1, it is characterized in that used thickening material is one or more in Walocel MT 20.000PV, carboxyethyl cellulose, the hydroxypropylcellulose; Described stablizer is one or more in calcium chloride, magnesium chloride, bariumchloride, the ammonium chloride.
7. according to emulsified bitumen claimed in claim 1, it is characterized in that used pitch is petroleum pitch, comprise in straight-run pitch, oxidized bitumen, solvent deoiling pitch, the polymer modified asphalt one or more, its penetration degree is 60～120 1/10mm.
8. according to emulsified bitumen claimed in claim 1, it is characterized in that described emulsified bitumen contains defoamer, take the weight of emulsified bitumen as benchmark, the content of defoamer is 0.01%～0.05%; Used defoamer is one or more in silicone emulsion, the fatty acid ester compounded thing of higher alcohols, polyoxyethylene polyoxypropylene tetramethylolmethane ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, the polypropylene glycerol aether.
9. according to emulsified bitumen claimed in claim 1, it is characterized in that adding amphoteric ionic surfactant in the described emulsified bitumen, take the weight of emulsified bitumen as benchmark, the add-on of amphoteric ionic surfactant is 0.1% ~ 0.7%; Used amphoteric ion type emulsifying agent is one or more in aminocarboxylic acid and the salt thereof.
10. according to emulsified bitumen claimed in claim 9, it is characterized in that used amphoteric ion type emulsifying agent is one or more in N-cocoyl-β-alanine sodium, N-cocoyl-β-alanine, N-lauryl-β-alanine, N-myristyl-β-alanine, N-tallow-β-imido disodium beclomethasone, the N-lauryl-β-imido disodium beclomethasone.
11. according to emulsified bitumen claimed in claim 1, it is characterized in that adding nonionic surface active agent in the described emulsified bitumen, take the weight of emulsified bitumen as benchmark, the add-on of nonionic surface active agent is 0.1% ~ 0.7%; Used nonionic emulsifier is one or more in fatty alcohol-polyoxyethylene ether and the alkylphenol polyoxyethylene.
12. according to the described emulsified bitumen of claim 11, it is characterized in that used fatty alcohol-polyoxyethylene ether 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 polyoxyethylene molecule number is 15 ~ 25 in the fatty alcohol-polyoxyethylene ether; Alkylphenol polyoxyethylene can be one or both in polyoxyethylene octylphenol ether, the polyoxyethylene nonylphenol ether, and wherein polyoxyethylene molecule number is 15 ~ 25 in the alkylphenol polyoxyethylene.
13. the preparation method of the arbitrary described emulsified bitumen of claim 1 ~ 7 comprises first asphalt heating to 110 ℃～165 ℃ for subsequent use; Jointly soluble in water cationic emulsifier, anionic emulsifier, thickening material, stablizer, and then add water reducer, stir, be prepared into soap lye and keep temperature be 40 ℃～65 ℃ for subsequent use; Above-mentioned soap lye and heated bitumen are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain emulsified bitumen.
14. in accordance with the method for claim 13, it is characterized in that, before water reducer adds, add afterwards or simultaneously defoamer is joined in the system.
15. in accordance with the method for claim 13, it is characterized in that, in preparation soap lye process, add amphoteric ionic surfactant; Take the weight of emulsified bitumen as benchmark, the add-on of amphoteric ionic surfactant is 0.1% ~ 0.7%; Used amphoteric ion type emulsifying agent is one or more in aminocarboxylic acid and the salt thereof.
16. according to claim 13 or 15 described methods, it is characterized in that, in preparation soap lye process, add nonionic surface active agent; Take the weight of emulsified bitumen as benchmark, the add-on of nonionic surface active agent is 0.1% ~ 0.7%; Used nonionic emulsifier is one or more in fatty alcohol-polyoxyethylene ether and the alkylphenol polyoxyethylene.
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| CN103525102A (en) * | 2013-09-23 | 2014-01-22 | 句容市睿远科技有限公司 | Emulsified asphalt for high-speed rail and preparation method thereof |
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| US11781019B2 (en) | 2015-11-13 | 2023-10-10 | Ergon, Inc. | Crack resistant micro surfacing composition |
| 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 |
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| CN105837092A (en) * | 2016-04-06 | 2016-08-10 | 河海大学 | Method for solidifying normal temperature asphalt by desulfurization ash |
| CN105837092B (en) * | 2016-04-06 | 2018-05-04 | 河海大学 | A kind of method that desulfurization ash cures room temperature pitch |
| CN107779217A (en) * | 2016-08-25 | 2018-03-09 | 神华集团有限责任公司 | A kind of coal liquefaction residue emulsified asphalt and its preparation method and application |
| CN108467496A (en) * | 2018-04-02 | 2018-08-31 | 大连理工大学 | A kind of cationic emulsified bitumen and preparation method thereof of high solids content high osmosis |
| CN108483975A (en) * | 2018-04-18 | 2018-09-04 | 辽宁仁泰交通科技有限公司 | A kind of high-performance asphalt warm-mix agent |
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