CN103059583B - Emulsified asphalt and preparation method thereof - Google Patents
Emulsified asphalt and preparation method thereof Download PDFInfo
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- CN103059583B CN103059583B CN201110315706.3A CN201110315706A CN103059583B CN 103059583 B CN103059583 B CN 103059583B CN 201110315706 A CN201110315706 A CN 201110315706A CN 103059583 B CN103059583 B CN 103059583B
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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 CA mortar) when emulsified bitumen of the present invention is for building high-speed railway.
Background technology
Along with railway construction level and the raising that requires railway transportation capability, need to build high-speed railway and intercity light rail, for stationarity when improving train high-speed cruising and when alleviating train operation because of the noise that concussion produces, adopt plate-type ballastless track technology.Plate-type ballastless track technology is by two track layings (title track plates) on reinforced cement concrete plate, need to lay the thick buffer layer of 3-5cm below track plates, this buffer layer is made up of emulsified bitumen, cement, fine sand and other mineral material, form cement asphalt mortar (Cement Asphalt mortar is called for short CA mortar).In CA mortar, emulsified bitumen is key material, utilizes the vibration energy that its flexible absorbent is certain, alleviates because of the noise that concussion produces when train is advanced, 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 that emulsified bitumen not only will have satisfactory stability, also to there is good consistency with the dry blend such as cement, fine sand, the hydration reaction speed of cement can not being affected, for ensureing that mortar can pour into well, requiring that the mortar of preparation also will have certain mobility in a long time.In addition, rear homogeneous in order to ensure the mortar solidification of pouring into, can not air pocket be produced when emulsified bitumen and the dry blend such as cement, fine sand mix.For ensureing there is enough water in the solidification process of cement asphalt mortar after perfusion for cement generation hydration reaction, needing to add water in addition, but excreting water phenomenon can occur when amount of water is too much or emulsifiers formula is improper.
CN 200710149995.8 discloses a kind of emulsified bitumen, and it is made up 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 made up of pitch, tensio-active agent, auxiliary agent and water, and tensio-active agent adopts cationic surfactant and nonionic surface active agent is composite carries 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 anionic emulsifier, stablizer, auxiliary agent etc. carry out emulsification to pitch., in order to reduce additional water consumption, there is the phenomenon of bleeding in emulsified bitumen prepared by aforesaid method, generally adds water reducer when mixing CA mortar after avoiding CA mortar injection.In order to eliminate larger bubble and reduce the generation of foam in mortar mix process, generally add defoamer when mixing CA mortar, such as CN 200910076819.5.Prepare mortar process to carry out in a kind of mixing truck, belong to batch operation, because the consumption of defoamer and water reducer is little, metering is difficult to precise control, even and if rapid stirring, the two distribution in mortar is also difficult to evenly, once measure wrong or skewness will have impact to mortar character, main manifestations is that froth breaking is thorough, during pouring mortar, more bubble can be piled up in the below at track plates four angles, after shaping, cause the undercapacity in bight.In addition, breakdown of emulsion can be unlikely to when high-speed stirring after mixing with a large amount of cement, fine sand to make high-iron emulsified asphalt, and there is the intensity of certain resistance to mechanical destruction, generally when producing high-iron emulsified asphalt, the consumption of tensio-active agent all can be very large, so, just easily produce a large amount of foam when production and the entrucking of high-iron emulsified asphalt, occupy the very large space of products pot, if misoperation, emulsified bitumen foam is easily emerged from tank mouth, makes troubles to production and transport.In addition, if the foam of emulsified bitumen is too much, when forming the thick skin of one deck after lather collapse, this seed coat is linked after lather collapse by the asphalt component on foam, even if stir and also cannot make its emulsification again, so can affect emulsified bitumen character, especially the upper residual content index of impact sieve, even also easily causes the breakdown of emulsion of emulsified bitumen.In addition, add defoamer and water reducer at the construction field (site), complex operation step, affects construction speed, increases trouble also to the structure design of mixing truck.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of good with cement mixing, stability in storage is good, on sieve residual content few, save execute-in-place step, 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 formula comprises: pitch, cationic emulsifier, anionic emulsifier, thickening material, stablizer, water reducer, water; With the weight of emulsified bitumen for 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%;
Water reducer used can be one or more in lignin sulfonate, naphthalenesulfonate formaldehyde condensation compound, condensate of melamine and formaldehyde.
Cationic emulsifier used comprises one or more in alkyl amine, amides, imidazolines, aminated lignin class, 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 ammonium chloride, cetyl trimethyl benzyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride.
Anionic emulsifier used is one or more in sulfuric ester salt, is preferably one or more in sodium alkyl sulfate, polyoxyethylenated alcohol sodium sulfate, aliphatic amine polyoxyethylene sodium sulfate.The alkyl carbon number of described sodium alkyl sulfate is 12 ~ 18.In described polyoxyethylenated alcohol sodium sulfate, the carbon number of fatty alcohol is 14 ~ 20, and polyoxyethylene Molecules is 1 ~ 4.In described aliphatic amine polyoxyethylene sodium sulfate, the carbon number of aliphatic amide is 14 ~ 20, and polyoxyethylene Molecules is 1 ~ 4.
Thickening material used is Mierocrystalline cellulose, can be one or more in Walocel MT 20.000PV, carboxyethyl cellulose, hydroxypropylcellulose.
Described stablizer is inorganic salt, comprises one or more in calcium chloride, magnesium chloride, bariumchloride, ammonium chloride etc.
In emulsified bitumen of the present invention, preferably add amphoteric ionic surfactant and/or nonionic surface active agent, with the weight of emulsified bitumen for benchmark, amphoteric ionic surfactant is 0.1% ~ 0.7%, and nonionic surface active agent consumption is 0.1% ~ 0.7%.
Amphoteric ion type emulsifying agent used is one or more in aminocarboxylic acid and salt thereof, can be 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, N-lauryl-β-imido disodium beclomethasone.
Nonionic emulsifier used is one or more in fatty alcohol-polyoxyethylene ether and 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, terpenol Soxylat A 25-7, and wherein in fatty alcohol-polyoxyethylene ether, polyoxyethylene Molecules is 15 ~ 25.Alkylphenol polyoxyethylene can be one or both in polyoxyethylene octylphenol ether, polyoxyethylene nonylphenol ether, and wherein in alkylphenol polyoxyethylene, polyoxyethylene Molecules is 15 ~ 25.
Pitch used is petroleum pitch, and comprise one or more in straight-run pitch, oxidized bitumen, solvent deoiling pitch, polymer modified asphalt, its penetration degree is 60 ~ 120(1/10mm).
Emulsified bitumen of the present invention can also contain defoamer, and with the weight of emulsified bitumen for benchmark, the content of defoamer is 0.01% ~ 0.05%.Defoamer used 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, 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 DEG C ~ 165 DEG C is for subsequent use; Cationic emulsifier, anionic emulsifier, thickening material, stablizer is jointly soluble in water, and then add water reducer, stir, be prepared into soap lye and keep temperature be 40 DEG C ~ 65 DEG C for subsequent use; Above-mentioned soap lye and heated bitumen are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, go out system when emulsion temperature drops to 60 DEG C ~ 70 DEG C, obtain emulsified bitumen.When the wherein said emulsion after colloidal mill grinding does not drop to out system temperature, can adopt the mode of heat exchange, such as water cooler is lowered the temperature, and then goes out system.
In the preparation method of emulsified bitumen of the present invention, can cationic surfactant, aniorfic surfactant, amphoteric ionic surfactant, nonionic surface active agent, thickening material, stablizer is jointly soluble in water when preparing soap lye, and then add water reducer, stir, be prepared into soap lye and keep temperature be 40 DEG C ~ 65 DEG C for subsequent use.
In the inventive method, preferably add defoamer, defoamer before water reducer adds, add after or join in system simultaneously.
Emulsified bitumen tool of the present invention has the following advantages:
1, water reducer is added in emulsified bitumen as a component by the present invention, not only can with the effect playing water reducer itself during cement mix, reduce operation steps during construction, but also the surfactivity of itself can be utilized, arrange in pairs or groups with negatively charged ion and cats product and use, play when producing emulsified bitumen of the present invention and help emulsifying effect, improve emulsifying effectiveness, can dosage of surfactant be reduced, reduce emulsifying agent cost.And, to residual content on the sieve of emulsified bitumen, stability in storage, especially have cement mixing index and improve significantly.Cement used during cement injection bituminous mortar under high-speed rail plate is short-term strength cement, so require comparatively strict to the cement mixing of emulsified bitumen.Emulsified bitumen of the present invention, owing to the addition of water reducer, can obviously improve cement mixing index.
2, the present invention utilizes the special property of defoamer, emulsified bitumen is made not easily to produce more foam when production and entrucking, avoid because foam too much causes the phenomenon of emerging from tank mouth, it also avoid the skinning that high-iron emulsified asphalt too much causes because foam, residual content index on the sieve being conducive to improving emulsified bitumen simultaneously.
3, water reducer and defoamer add to when preparing emulsified bitumen among emulsified bitumen by the present invention in advance, metering caused by adding when not only can solve at the construction field (site) is forbidden, the problem of the two skewness in mortar, and can save working-yard add defoamer and water reducer time whipping step, enhance productivity.
4, the present invention is owing to adding in emulsifier aqueous solution by water reducer in advance, water reducer can be made to be evenly distributed in emulsified bitumen, when with the dry blend such as cement, fine sand mix, water reducer is easy to be uniformly dispersed, fully contact with cement, fine sand etc., water-reducing effect is obvious, and the scene of avoiding adds fashionable stirring uneven phenomenon.While the additional water consumption of minimizing, there is excreting water phenomenon after efficiently avoid CA mortar injection, improve the workability of emulsified bitumen and cement and fine sand, improve the mobility of CA mortar, make CA mortar injection full, shaping rear uniform force.
5, the present invention is owing to adding in emulsifier aqueous solution by defoamer in advance, defoamer can be made to be evenly distributed in emulsified bitumen, make emulsified bitumen when with the dry blend such as cement, fine sand mix, defoamer wherein fully can contact with various component, effectively can eliminate air pocket, make the shaping rear quality of CA mortar fine and close, evenly, the scene of avoiding adds and fashionablely produces 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 DEG C for subsequent use.Get cationic emulsifier palmityl trimethyl ammonium chloride 50g, anionic emulsifier fat (18) alcohol 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, what be jointly dissolved in 3113g is not less than in the water of 45 DEG C, after fully dissolving, add methyl-silicone oil (303-20) 1g again, calcium lignin sulphonate 10 g, stir, be prepared into soap lye for subsequent use, and make temperature keep being not less than 40 DEG C.Then soap lye and pitch are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, then when making emulsion temperature be reduced to 60 DEG C ~ 70 DEG C by water cooler, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning is in table 1, and emulsified bitumen character is in 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 DEG C 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 polyoxyethylene (20) ether 50g, carboxyethyl cellulose 5 g, ammonium chloride 15 g, jointly be dissolved in the water of 65 DEG C of 3531g, after to be emulsified dose of abundant dissolving, add naphthalene sulfonic acidformaldehyde condensation product 40g again, polyoxyethylene oxypropylene glycerine (GPE30) 5g, stir, be prepared into soap lye for subsequent use and keep temperature to be 65 DEG C.Then soap lye and pitch are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, then when making emulsion temperature be reduced to 60 DEG C ~ 70 DEG C by water cooler, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning is in table 1, and emulsified bitumen character is in 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 DEG C 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 the water of 55 DEG C of 3950g, after to be emulsified dose of abundant dissolving, add sulfonated melamine compound condenses 69 g again, higher alcohols fatty acid ester (C18, concentration 30%) 3g, stir, be prepared into soap lye for subsequent use and keep temperature to be 55 DEG C.Then soap lye and pitch are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, then when making emulsion temperature be reduced to 60 DEG C ~ 70 DEG C by water cooler, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning is in table 1, and emulsified bitumen character is in table 2.
Embodiment 4
Getting penetration degree is 118(1/10mm) SBS modifying asphalt 5800g, be heated to 162 DEG C for subsequent use.Get cationic emulsifier 1-aminoethyl-2-heptadecyl imidazole quinoline-2(M-1) 125 g, anionic emulsifier fat (20) alcohol 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 3827g water, after to be emulsified dose of abundant dissolving, add thionamic acid sodium 25 g again, polypropylene glycerol aether 2g, stirs, and is prepared into soap lye for subsequent use and keep temperature to be 60 DEG C.Then soap lye and pitch are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, then when making emulsion temperature be reduced to 60 DEG C ~ 70 DEG C by water cooler, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning is in table 1, and emulsified bitumen character is in table 2.
Embodiment 5
Getting penetration degree is 108(1/10mm) LIAOHE CRUDE straight-run pitch 6500g, be heated to 115 DEG C for subsequent use.Get cationic emulsifier palmityl trimethyl ammonium chloride 150g, anionic emulsifier fat (18) alcohol polyoxyethylene (3) ether sodium sulfate 150 g, carboxymethyl cellulose 4 g, calcium chloride 20g, be jointly dissolved in 3120g and be not less than in the water of 45 DEG C, after fully dissolving, add methyl-silicone oil (303-20) 4g again, calcium lignin sulphonate 52 g, stirs, be prepared into soap lye for subsequent use, and make temperature keep being not less than 40 DEG C.Then soap lye and pitch are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, then when making emulsion temperature be reduced to 60 DEG C ~ 70 DEG C by water cooler, flow out from the outlet of system, obtain emulsified bitumen of the present invention.Concrete proportioning is in table 1, and emulsified bitumen character is in table 2.
Comparative example 1
Getting penetration degree is 108(1/10mm) LIAOHE CRUDE straight-run pitch 6750g, be heated to 115 DEG C for subsequent use.Get cationic emulsifier palmityl trimethyl ammonium chloride 50g, anionic emulsifier fat (18) alcohol 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 being dissolved in 3124g is not less than in the water of 45 DEG C, stir, be prepared into soap lye for subsequent use, and make temperature keep being not less than 40 DEG C.Then soap lye and pitch are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, then when making emulsion temperature be reduced to 60 DEG C ~ 70 DEG C by water cooler, flow out from the outlet of system, obtain emulsified bitumen.Concrete proportioning is in table 1, and emulsified bitumen character is in 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 DEG C 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 polyoxyethylene (20) ether 50g, carboxyethyl cellulose 5 g, ammonium chloride 15g, be dissolved in the water of 65 DEG C of 3576g jointly, stir, be prepared into soap lye for subsequent use and keep temperature to be 65 DEG C.Then soap lye and pitch are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, then when making emulsion temperature be reduced to 60 DEG C ~ 70 DEG C by water cooler, flow out from the outlet of system, obtain emulsified bitumen.Concrete proportioning is in table 1, and emulsified bitumen character is in table 2.
By the emulsified bitumen of above-described embodiment 1 ~ embodiment 5 directly according to certain ratio, stir together with the high ferro dedicated mortar dry mash that cement, fine sand, aluminium powder, swelling agent, air entrapment agent etc. form, make cement asphalt mortar, record the character of mortar in table 3.By adding water reducer and the defoamer of respective numbers when the emulsified bitumen of comparative example 1 and comparative example 2 and high ferro dedicated mortar dry mash mix respectively with reference to embodiment 1 and embodiment 2, stir, make cement asphalt mortar, record the character of mortar in table 3.
table 1 emulsified bitumen proportioning
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| 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 continues
| Project | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 |
| 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 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 DEG C) | 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 |
| Evaporation of residual properties | |||||
| Penetration degree, 1/10mm | 109 | 98 | 63 | 60～120 | GB/T4509 |
| Ductility (25 DEG C)/cm | ＞150 | ＞150 | 110 | ≥100 | GB/T4508 |
| Ductility (5 DEG C)/cm | 68 | 45 | 27 | ≥20 | GB/T4508 |
| Solubleness/% | 99.8 | 99.8 | 99.9 | ≥99 | JTJ T0607 |
| Emulsified bitumen state | Fine and smooth | Fine and smooth | Fine and smooth |
table 2 continues
| Project | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | Index request | Detection method |
| Residual content/% on 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 DEG C) | Without coarse grain, without caking | Without coarse grain, without caking | Seedy, there is caking | Seedy, there is caking | Without coarse grain, without caking | JTJ T0656 |
| Cement mixing | 0.2 | 0.2 | 3.8 | 3.4 | ≤2.0 | JTJT0657 |
| Evaporation of residual properties | ||||||
| Penetration degree, 1/10mm | 118 | 107 | 108 | 98 | 60～120 | GB/T4509 |
| Ductility (25 DEG C)/cm | ＞150 | ＞150 | ＞150 | ＞150 | ≥100 | GB/T4508 |
| Ductility (5 DEG C)/cm | 90 | 70 | 68 | 45 | ≥20 | GB/T4508 |
| Solubleness/% | 99.6 | 99.7 | 99.8 | 99.8 | ≥99 | JTJ T0607 |
| Emulsified bitumen state | Fine and smooth | Fine and smooth | Seedy, there is skinning | Seedy, there is skinning |
From table 2, in advance water reducer and defoamer are participated in the preparation of emulsified bitumen as emulsifier component, residual content on the sieve of emulsified bitumen, stability in storage, cement mixing are had and improves significantly, especially more meaningful to improving cement mixing, be conducive to the mix of mortar, perfusion and shaping.
table 3 cement asphalt mortar character
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | CA mortar index request |
| Mortar state | Without air pocket, homogeneous full, not bleeding | Without air pocket, homogeneous full, not bleeding | Without air pocket, homogeneous full, not bleeding | |
| 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 continues
| Project | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | CA mortar index request |
| Mortar state | Without air pocket, homogeneous full, not bleeding | Without air pocket, homogeneous full, not bleeding | Have air pocket, quality is uneven, and bleeding is obvious | Have air pocket, 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 |
From table 3, after the emulsified bitumen of embodiment 1 ~ embodiment 5 and high ferro dedicated mortar dry powder mix, operable time extends, and is conducive to mortar mix, perfusion and shaping.Effectively improve bleeding rate, be conducive to the hydration reaction ensureing cement.The indexs such as air content, degree of mobilization, resolution, ultimate compression strength are made to meet high-speed rail construction code requirement.
Claims (12)
1. an emulsified bitumen, its formula comprises: pitch, cationic emulsifier, anionic emulsifier, thickening material, stablizer, water reducer, water; With the weight of emulsified bitumen for 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%;
Water reducer used is one or more in lignin sulfonate, naphthalenesulfonate formaldehyde condensation compound, condensate of melamine and formaldehyde; Cationic emulsifier used comprises one or more in alkyl amine, amides, imidazolines, aminated lignin class, quaternary ammonium salt emulsifying agent; Anionic emulsifier used is one or more in sulfuric ester salt; Described emulsified bitumen contains defoamer, and with the weight of emulsified bitumen for benchmark, the content of defoamer is 0.01% ~ 0.05%; Defoamer used 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, polypropylene glycerol aether.
2., according to emulsified bitumen according to claim 1, 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, dodecyl benzyl dimethyl ammonium chloride.
3., according to emulsified bitumen according to claim 1, it is characterized in that anionic emulsifier used is one or more in sodium alkyl sulfate, polyoxyethylenated alcohol sodium sulfate, aliphatic amine polyoxyethylene sodium sulfate; The alkyl carbon number of described sodium alkyl sulfate is 12 ~ 18; In described polyoxyethylenated alcohol sodium sulfate, the carbon number of fatty alcohol is 14 ~ 20, and polyoxyethylene Molecules is 1 ~ 4; In described aliphatic amine polyoxyethylene sodium sulfate, the carbon number of aliphatic amide is 14 ~ 20, and polyoxyethylene Molecules is 1 ~ 4.
4., according to emulsified bitumen according to claim 1, it is characterized in that thickening material used is one or more in Walocel MT 20.000PV, carboxyethyl cellulose, hydroxypropylcellulose; Described stablizer is one or more in calcium chloride, magnesium chloride, bariumchloride, ammonium chloride.
5. according to emulsified bitumen according to claim 1, it is characterized in that pitch used is petroleum pitch, comprise one or more in straight-run pitch, oxidized bitumen, solvent deoiling pitch, polymer modified asphalt, its penetration degree is 60 ~ 120 1/10mm.
6. according to emulsified bitumen according to claim 1, it is characterized in that adding amphoteric ion type emulsifying agent in described emulsified bitumen, with the weight of emulsified bitumen for benchmark, the add-on of amphoteric ion type emulsifying agent is 0.1% ~ 0.7%; Amphoteric ion type emulsifying agent used is one or more in aminocarboxylic acid and salt thereof.
7., according to emulsified bitumen according to claim 6, it is characterized in that amphoteric ion type emulsifying agent used 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, N-lauryl-β-imido disodium beclomethasone.
8. according to emulsified bitumen according to claim 1, it is characterized in that adding nonionic emulsifier in described emulsified bitumen, with the weight of emulsified bitumen for benchmark, the add-on of nonionic emulsifier is 0.1% ~ 0.7%; Nonionic emulsifier used is one or more in fatty alcohol-polyoxyethylene ether and alkylphenol polyoxyethylene.
9. according to emulsified bitumen according to claim 8, it is characterized in that fatty alcohol-polyoxyethylene ether used is one or more in ethoxylated dodecyl alcohol, Brij, palmityl alcohol Soxylat A 25-7, hexalin Soxylat A 25-7, terpenol Soxylat A 25-7, wherein in fatty alcohol-polyoxyethylene ether, polyoxyethylene Molecules is 15 ~ 25; Alkylphenol polyoxyethylene can be one or both in polyoxyethylene octylphenol ether, polyoxyethylene nonylphenol ether, and wherein in alkylphenol polyoxyethylene, polyoxyethylene Molecules is 15 ~ 25.
10. the preparation method of the arbitrary described emulsified bitumen of claim 1 ~ 5, comprises first that asphalt heating to 110 DEG C ~ 165 DEG C is for subsequent use; Cationic emulsifier, anionic emulsifier, thickening material, stablizer is jointly soluble in water, and then add water reducer, stir, be prepared into soap lye and keep temperature be 40 DEG C ~ 65 DEG C for subsequent use; Above-mentioned soap lye and heated bitumen are transported in colloidal mill respectively, through colloidal mill dispersed and grinding after, become emulsion oil-in-water, go out system when emulsion temperature drops to 60 DEG C ~ 70 DEG C, obtain emulsified bitumen; Before water reducer adds, add after or defoamer is joined in system simultaneously.
11. in accordance with the method for claim 10, it is characterized in that, adds amphoteric ion type emulsifying agent preparing in soap lye process; With the weight of emulsified bitumen for benchmark, the add-on of amphoteric ion type emulsifying agent is 0.1% ~ 0.7%; Amphoteric ion type emulsifying agent used is one or more in aminocarboxylic acid and salt thereof.
12., according to the method described in claim 10 or 11, is characterized in that, add nonionic emulsifier preparing in soap lye process; With the weight of emulsified bitumen for benchmark, the add-on of nonionic emulsifier is 0.1% ~ 0.7%; Nonionic emulsifier used is one or more in fatty alcohol-polyoxyethylene ether and alkylphenol polyoxyethylene.
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| BR112018009727B1 (en) * | 2012-11-13 | 2022-08-30 | Ergon Asphalt & Emulsions, Inc | POLYMER MODIFIED ASPHALT EMULSION, MICROCOATING PAVING COMPOSITION, ARTICLE, AND METHOD FOR APPLYING POLYMER MODIFIED ASPHALT EMULSION TO A PAVED SURFACE |
| 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 |
| CN105837092B (en) * | 2016-04-06 | 2018-05-04 | 河海大学 | A kind of method that desulfurization ash cures room temperature pitch |
| CN107779217B (en) * | 2016-08-25 | 2020-06-02 | 神华集团有限责任公司 | Emulsified asphalt prepared from coal liquefaction residues and preparation method and application thereof |
| 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 |
| CN108483975B (en) * | 2018-04-18 | 2020-12-15 | 辽宁仁泰交通科技有限公司 | High-performance asphalt warm-mixing agent |
| CN109880121A (en) * | 2019-02-22 | 2019-06-14 | 湖南鑫长胜材料科技有限公司 | A kind of emulsified asphalt and preparation method thereof |
| CN110092918A (en) * | 2019-06-04 | 2019-08-06 | 沈阳熠道科技有限公司 | Self-dissolving type asphalt emulsifier and preparation method |
| CN112759943A (en) * | 2021-01-22 | 2021-05-07 | 熊彪 | Emulsified asphalt and preparation method thereof |
| CN115490485B (en) * | 2022-11-21 | 2023-03-10 | 湖南大学 | Low-carbon underground filling material and preparation method thereof |
| CN117430827B (en) * | 2023-12-20 | 2024-02-23 | 德州坤鸿化工有限公司 | High-performance cold-recycling asphalt emulsifier and preparation method thereof |
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| CN102010163A (en) * | 2010-10-25 | 2011-04-13 | 中铁八局集团第四工程有限公司 | CA (cement and asphalt) mortar for CRTS II slab ballastless tracks |
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