CN103058588A - Anti-freezing cement asphalt mortar and preparation method thereof - Google Patents
Anti-freezing cement asphalt mortar and preparation method thereof Download PDFInfo
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- CN103058588A CN103058588A CN2011103156681A CN201110315668A CN103058588A CN 103058588 A CN103058588 A CN 103058588A CN 2011103156681 A CN2011103156681 A CN 2011103156681A CN 201110315668 A CN201110315668 A CN 201110315668A CN 103058588 A CN103058588 A CN 103058588A
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Abstract
The invention discloses an anti-freezing cement asphalt mortar and a preparation method thereof. The cement asphalt mortar comprises emulsified asphalt, cement, fine sand, an expansive agent, an aluminite powder and water. A formula of the emulsified asphalt comprises asphalt, an anionic emulsifier, a cationic emulsifier, a thickener, a stabilizer, a water reducing agent, a defoaming agent, alcohol and water. The cement asphalt mortar provided by the invention employs special emulsified asphalt; and when the cement asphalt mortar is mixed with dry material such as cement and sand, the water reducing agent and the defoaming agent are easily dispersed to fully contact with the dry material, thus realizing obvious water reducing effect, effectively avoiding bleeding phenomenon after pouring of CA mortar, and improving workability of the emulsified asphalt with cement and fine sand; and synergistic effect of alcohol improves anti-freezing performance of the CA mortar, effectively eliminates large bubbles, and realizes dense and uniform texture after forming of the CA mortar. The cement asphalt mortar provided by the invention is particularly suitable for perfusion under track plate as a buffer layer in construction of high-speed railway.
Description
Technical field
The present invention relates to a kind of frost resistance cement asphalt mortar and preparation method thereof, cement asphalt mortar (being called for short the CA mortar) that pours under the plate-type ballastless track plate during especially for the build high-speed railway and preparation method thereof.
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 siccatives 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 siccative 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 easily produce a large amount of foams, occupy the very large space of products pot, if misoperation, the emulsified bitumen foam is easily emerged from the tank mouth, 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 easily causes 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, but the invention provides a kind of have frost resistance, good without bleeding, workability, the good fluidity duration of mixing long, without air pocket, homogeneous, can save the execute-in-place step, the cement asphalt mortar of enhancing productivity and preparation method thereof.This cement asphalt mortar is poured under the track plates as buffer layer when being particularly suitable for building high-speed railway.
Cement asphalt mortar of the present invention, its prescription comprises emulsified bitumen, cement, fine sand, swelling agent, aluminium powder, water; Take the weight of cement asphalt mortar as benchmark:
Emulsified bitumen 18.0%～25.0%,
Cement 22.0%～24.0%,
Fine sand 45.0%～47.0%,
Swelling agent 2.0%～2.6%,
Aluminium powder 0.0015%～0.0025%,
Water 6.0%～9.0%,
The prescription of wherein said emulsified bitumen comprises pitch, cationic emulsifier, anionic emulsifier, thickening material, stablizer, water reducer, defoamer, alcohol, water; Take the weight of emulsified bitumen as benchmark:
Pitch 55.0%～65.0%,
Cationic emulsifier 0.5%～2.0%,
Anionic emulsifier 0.5%～2.0%,
Stablizer 0.1%～0.25%,
Water reducer 0.1%～0.7%,
Defoamer 0.05%～0.1%,
Alcohol 0.8%～4.0%,
Thickening material 0.01%～0.05%,
Water 33.0%～36.0%.
The used water reducer of emulsified bitumen can be one or more in lignin sulfonate, naphthalenesulfonate formaldehyde condensation compound, the condensate of melamine and formaldehyde.
The used defoamer of emulsified bitumen 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 used alcohols of emulsified bitumen is one or more in ethanol, propyl alcohol, Virahol and the trimethyl carbinol.
The used cationic emulsifier of emulsified bitumen 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.
The used anionic emulsifier of emulsified bitumen 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.
The used thickening material of emulsified bitumen is Mierocrystalline cellulose, can be in Walocel MT 20.000PV, carboxyethyl cellulose, the hydroxypropylcellulose one or more.
The used stablizer of emulsified bitumen 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%.
The used amphoteric ion type emulsifying agent of emulsified bitumen 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.
The used nonionic emulsifier of emulsified bitumen 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.
The used pitch of emulsified bitumen 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.
Used cement is silicate cement in the cement asphalt mortar of the present invention, and strength grade is any one among 42.5R, 52.5, the 52.5R, 62.5.
Used fine sand can for one or more the mixture in river sand, extra large sand, the mountain sand, be preferably mountain sand in the cement asphalt mortar of the present invention; Used fine sand will be through washing, and flush away earth wherein fully mixes after the oven dry, wherein, and the fine sand proportion of different-grain diameter, take the weight of fine sand as benchmark:
Particle diameter 0.35～0.5mm 34%～40%,
Particle diameter 0.25～0.35mm 22%～24%,
Particle diameter＜0.25mm 38%～42%.
Used swelling agent is calcium sulphoaluminate class swelling agent in the cement asphalt mortar of the present invention.
Used aluminium powder is flakey in the cement asphalt mortar of the present invention.
The preparation method of cement asphalt mortar of the present invention comprises: load weighted water and emulsified bitumen are added in the stirring tank, stir as liquid material; Then, stir on one side, successively the siccatives such as cement, fine sand, swelling agent, aluminium powder are added in the above-mentioned liquid material on one side, after adding, whole siccatives stir, obtain cement asphalt mortar.
The preparation method of wherein said emulsified bitumen is: with asphalt heating to 110 ℃～165 ℃, obtain material I first; At normal temperatures, water reducer, defoamer and alcohol are mixed, then under whipped state, thickening material is added in the mixture of water reducer, defoamer and alcohol slowly, stir, make mashed prod, obtain material II; Jointly soluble in water cationic emulsifier, anionic emulsifier, stablizer, being prepared into soap lye and keeping temperature is 40 ℃～65 ℃, obtains material III; Then material I, material II and material III are transported to respectively in the colloidal mill, behind the colloidal mill Uniform Dispersion, 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, the preferred preparation process of material III is as follows: jointly soluble in water cationic emulsifier, anionic emulsifier, amphoteric ion type emulsifying agent and/or nonionic emulsifier, stablizer, be prepared into soap lye, and remain on 40 ℃～65 ℃, obtain material III.
Cement asphalt mortar of the present invention has following advantage:
1, the present invention is dissolved in water reducer, thickening material, defoamer in the alcohol in advance, be prepared into mashed prod and jointly participate in emulsification, they can be scattered in the emulsified bitumen equably, when with mixs such as cement, fine sands, add the problem that caused metering is inaccurate and dispersion is uneven in the time of not only can solving at the construction field (site), and the whipping step can save the working-yard and add defoamer and water reducer the time, enhance productivity;
2, during the dry blend mix such as emulsified bitumen of the present invention and cement, fine sand, water reducer is easy to be uniformly dispersed, and fully contacts with cement, fine sand etc., and 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;
3, during the dry blend mix such as emulsified bitumen of the present invention and cement, fine sand, the defoamer that is dispersed in advance in the emulsified bitumen 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;
4, the present invention has used water reducer and alcohols simultaneously, because the use of water reducer guaranteeing that cement carries out having reduced as much as possible external adding water under the hydration reaction prerequisite, is conducive to improve the frost resistance of CA mortar; Under the synergy of alcohol, further improved the frost resistance of CA mortar again, guaranteed that bursting by freezing or the loose phenomenon of freeze thawing do not occur winter mortar;
5, anti-freezing emulsified asphalt of the present invention is dissolved in water reducer, defoamer, thickening material in the alcohol in advance at normal temperatures, is prepared into mashed prod.Make this mashed prod participate in emulsification with the form of an integral body, cooperate with positively charged ion and anionic emulsifier, water reducer wherein plays and helps emulsifying effect, improved emulsifying effectiveness, make the emulsified bitumen particle become fine and smooth, to residual content on the sieve of emulsified bitumen, stability in storage, especially the cement mixing index is had significantly improve; Defoamer wherein makes emulsified bitumen be difficult for producing more foam when production and entrucking, avoid too much causing the phenomenon of emerging from the tank mouth because of foam, simultaneously also avoid emulsified bitumen because of the skinning that foam too much causes, be conducive to improve residual content index on the sieve of emulsified bitumen; Thickening material wherein plays the effect of enhanced film intensity, makes film be difficult for breaking, and pitch particle is difficult for combination, improves stability in storage; Pure molecule wherein plays cryoprotective effects, makes near the water molecules of pitch particle easy freezing not.Under four synergy, improve residual content on emulsified bitumen standing storage, the sieve, especially improved the cement mixing index, have again frost resistance simultaneously.
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 6470g, be heated to 115 ℃ for subsequent use, obtain material I; At normal temperatures, with sulfonated lignin calcium 10 g, methyl-silicone oil (303-20) 7g, Virahol 80 g after mixing, add carboxymethyl cellulose 1 g slowly under whipped state, stir and make mashed prod, obtain material II; 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, calcium chloride 5 g, jointly be dissolved in the 3307g water, keep temperature 45 C, obtain material III; Then material I, material II and material III are transported to respectively in the colloidal mill, behind the colloidal mill Uniform Dispersion, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain the used 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, obtain material I; At normal temperatures, with naphthalene sulfonic acidformaldehyde condensation product 40 g, polyoxyethylene oxypropylene glycerine (GPE30) 5g, ethanol 60g, trimethyl carbinol 100g is after mixing, under whipped state, slowly add carboxyethyl cellulose 5 g, stir and make mashed prod, obtain material II; 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, ammonium chloride 15 g are dissolved in the water of 3371g jointly, stir, be prepared into soap lye and keep 65 ℃ of temperature, obtain material III; Then material I, material II and material III are transported to respectively in the colloidal mill, behind the colloidal mill Uniform Dispersion, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain the used 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 5900g of Qilu Petrochemical Company, be heated to 155 ℃, obtain material I; At normal temperatures, with sulfonated melamine compound condenses 25 g, higher alcohols fatty acid ester (C18, concentration 30wt%) 9g, propyl alcohol 320g is after fully mixing, under whipped state, slowly add Natvosol 3 g, stir and make mashed prod, obtain material II; 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 30g, nonionic emulsifier lauryl alcohol polyethylene glycol oxide (20) ether 30g, magnesium chloride 10g is dissolved in 55 ℃ the water of 3353g jointly, stirs, be prepared into soap lye and keep 55 ℃ of temperature, obtain material III; Then material I, material II and material III are transported to respectively in the colloidal mill, behind the colloidal mill Uniform Dispersion, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain the used 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 5520g, be heated to 162 ℃, obtain material I; At normal temperatures, with thionamic acid sodium 69 g, polypropylene glycerol aether 10g, trimethyl carbinol 400g fully mixes, and then slowly adds hydroxypropylcellulose 2 g under whipped state, stirs the formation mashed prod, obtains material II; Get 125 g of cationic emulsifier 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline-2(M-1), anionic emulsifier fat (20) pure polyoxyethylene (4) ether sodium sulfate 150g, amphoteric ion type emulsifying agent N-lauryl-β-imido disodium beclomethasone 50g, nonionic emulsifier Nonyl pheno (20) ether 69g, bariumchloride 25 g, jointly be dissolved in the 3580g water, being prepared into soap lye and keeping temperature is 60 ℃, obtains material III; Then material I, material II and material III are transported to respectively in the colloidal mill, behind the colloidal mill Uniform Dispersion, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain the used 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 6100g, be heated to 115 ℃, obtain material I; At normal temperatures, with sulfonated lignin calcium 52 g, methyl-silicone oil (303-20) 6g, Virahol 240 g after mixing, add carboxymethyl cellulose 4 g slowly under whipped state, stir and make mashed prod, obtain material II; Get cationic emulsifier palmityl trimethyl ammonium chloride 150g, anionic emulsifier fat (18) pure polyoxyethylene (3) ether sodium sulfate 90 g, calcium chloride 20 g, jointly be dissolved in the water that 3338g is not less than 50 ℃, stir, be prepared into soap lye and keep temperature 50 C, obtain material III; Then material I, material II and material III are transported to respectively in the colloidal mill, behind the colloidal mill Uniform Dispersion, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain the used 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 6470g, 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, calcium chloride 5 g are dissolved in the water that 3324g is not less than 45 ℃ jointly, stir, be prepared into soap lye for subsequent use, and make temperature keep being not less than 45 ℃.Get Virahol 80 g, under whipped state, slowly the carboxymethyl cellulose of 1 g is added in the Virahol, stir that to make mashed prod for subsequent use.Then above-mentioned pitch, soap lye and mashed prod are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, make emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, emit 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, ammonium chloride 15 g, jointly be dissolved in 65 ℃ the water of 3416g, stir, be prepared into that soap lye is for subsequent use and to keep temperature be 65 ℃.Get ethanol 60g, trimethyl carbinol 100g slowly adds the carboxyethyl cellulose of 5 g in the alcoholic solution under whipped state, stirs that to make mashed prod for subsequent use.Then above-mentioned pitch, soap lye and mashed prod are transported to respectively in the colloidal mill, through the colloidal mill Uniform Dispersion and after grinding, become emulsion oil-in-water, make emulsion temperature be reduced to 60 ℃～70 ℃ by water cooler again, emit from the outlet of system, obtain emulsified bitumen.Concrete proportioning sees Table 1, and emulsified bitumen character sees Table 2.
Above-described embodiment 1～embodiment 5 preparation mortar methods: at normal temperatures load weighted water and emulsified bitumen are added in the stirring tank respectively, stir as liquid material; Then, stir on one side, successively cement, fine sand, swelling agent, aluminium powder are added in the above-mentioned liquid material on one side, after adding, whole siccatives stir.The material mixture ratio of embodiment 1～embodiment 5 preparation mortars sees Table 3, and the character that records mortar sees Table 4.Respectively the emulsified bitumen of comparative example 1 and comparative example 2 is pressed the preparation method of above-mentioned mortar, respectively according to the consumption of water reducer and defoamer among embodiment 1 and the embodiment 2, add in the mortar at the scene when the preparation mortar, make cement asphalt mortar, material mixture ratio sees Table 3, and the character that records mortar sees Table 4.The used cement of the present invention is the conch board cement that Anhui Conch Cement stock company produces.
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.Simultaneously, because the synergy of alcohols, make emulsified bitumen-25 ℃ of lower storages and breakdown of emulsion not, without coarse grain without caking.
By as seen from Table 4, behind the siccative mixs such as the emulsified bitumen of embodiment 1～embodiment 5 and cement, fine sand, swelling agent, 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, frost resistance also is improved.
Table 1 emulsified bitumen proportioning
| The raw material consumption | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| The basic asphalt type | Straight-run pitch | Solvent deoiling pitch | Oxidized bitumen |
| Penetration degree/0.1mm | 108 | 98 | 62 |
| Asphalt content/g | 6470 | 6000 | 5900 |
| Emulsifier/g | ? | ? | ? |
| -positively charged ion | 50 | 90 | 195 |
| -negatively charged ion | 50 | 195 | 125 |
| -zwitter-ion | 10 | 69 | 30 |
| -nonionic | 10 | 50 | 30 |
| Stabilizing agent dosage/g | 5 | 15 | 10 |
| Water reducer consumption/g | 10 | 40 | 25 |
| Defoamer consumption/g | 7 | 5 | 9 |
| Alcohol consumption/g | 80 | 160 | 320 |
| Thickening material consumption/g | 1 | 5 | 3 |
| Water consumption/g | 3307 | 3371 | 3353 |
Table 1 is continuous
| The raw material consumption | 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/0.1mm | 118 | 108 | 108 | 98 |
| Asphalt content/g | 5520 | 6100 | 6470 | 6000 |
| Emulsifier/g | ? | ? | ? | ? |
| Positively charged ion | 125 | 150 | 50 | 90 |
| Negatively charged ion | 150 | 90 | 50 | 195 |
| Zwitter-ion | 50 | - | 10 | 69 |
| Nonionic | 69 | - | 10 | 50 |
| Stabilizing agent dosage/g | 25 | 20 | 5 | 15 |
| Water reducer consumption/g | 69 | 52 | - | - |
| Defoamer consumption/g | 10 | 6 | - | - |
| Alcohol consumption/g | 400 | 240 | 80 | 160 |
| Thickening material consumption/g | 2 | 4 | 1 | 5 |
| Water consumption/g | 3580 | 3338 | 3324 | 3416 |
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. | 10 | 12.8 | 3～15 | JTJ T0622 |
| Stability in storage/% | ? | ? | ? | ? | ? |
| 1 day | 0.3 | 0.2 | 0.2 | ≤1 | JTJ T0655 |
| 5 days | 3 | 2 | 2.4 | ≤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 |
| Low-temperature storage experiment (25 ℃) | Without coarse grain, without caking | Without coarse grain, without caking | Without coarse grain, without caking | ? | ? |
| Cement mixing | 0.6 | 0.4 | 0.8 | ≤2.0 | JTJT0657 |
| The evaporation of residual properties | ? | ? | ? | ? | ? |
| Penetration degree/0.1mm | 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 | 0.02 | 0.95 | 0.84 | ≤0.1 | JTJ T0652 |
| Viscosity Engler | 9.1 | 11.4 | 13.6 | 9.8 | 3～15 | JTJ T0622 |
| Stability in storage/% | ? | ? | ? | ? | ? | ? |
| 1 day | 0.1 | 0.5 | 1.7 | 1.5 | ≤1 | JTJ T0655 |
| 5 days | 1.3 | 1.9 | 7 | 8 | ≤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 | Without coarse grain, without caking | JTJ T0656 |
| Low-temperature storage experiment (25 ℃) | Without coarse grain, without caking | Without coarse grain, without caking | Seedy | Seedy | ? | ? |
| Cement mixing | 0.29 | 0.31 | 3.8 | 3.4 | ≤2.0 | JTJT0657 |
| The evaporation of residual properties | ? | ? | ? | ? | ? | ? |
| Penetration degree/0.1mm | 118 | 107 | 108 | 98 | 60～120 | GB/T4509 |
| Ductility (25 ℃)/cm | ＞150 | ＞150 | ＞150 | ＞150 | ≥100 | GB/T4508 |
| Ductility (5 ℃)/cm | 90 | 72 | 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 | Skinning is arranged | Skinning is arranged | ? | ? |
Table 3 cement asphalt mortar proportioning
| The raw material consumption | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Emulsified bitumen/kg | 180 | 248 | 201 |
| The strength of cement grade | 42.5R | 52.5 | 52.5R |
| Cement consumption/kg | 240 | 220 | 230 |
| The fine sand type | River sand | Sea sand | Mountain sand |
| Fine sand consumption/kg | 470 | 450 | 460 |
| Swelling agent/kg | 20 | 22 | 24 |
| External adding water/kg | 90 | 60 | 85 |
| Water reducer/g | - | - | - |
| Defoamer/g | - | - | - |
| Aluminium powder/g | 25 | 15 | 20 |
Table 3 is continuous
| The raw material consumption | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 |
| Emulsified bitumen/kg | 204 | 215 | 180 | 248 |
| The strength of cement grade | 52.5R | 62.5 | 42.5R | 52.5 |
| Cement consumption/kg | 235 | 225 | 240 | 220 |
| The fine sand type | Mountain sand, river sand | Mountain sand, extra large sand | River sand | Sea sand |
| Fine sand consumption/kg | 455 | 465 | 470 | 450 |
| Swelling agent/kg | 26 | 25 | 20 | 22 |
| External adding water/kg | 80 | 70 | 90 | 60 |
| Water reducer/g | - | - | 180 | 992 |
| Defoamer/g | - | - | 126 | 124 |
| Aluminium powder/g | 18 | 23 | 25 | 15 |
Table 4 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 | 23 | 18 | 19 | 16～26 |
| Operable time/min | 58 | 79 | 92 | ≥30 |
| Resolution/% | 0.7 | 0.5 | 0.7 | ≤3 |
| Air content/% | 10.2 | 9.5 | 9.9 | 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 | 0.26 | ≥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 |
| Frost resistance test (28 days) | ? | ? | ? | ? |
| Mass loss rate/% | 2.3 | 2.8 | 1.2 | ≤5 |
| Relative resilient modulus/MPa | 93 | 99 | 94 | ≥60 |
Table 4 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 | 21 | 20 | 29 | 27 | 16～26 |
| Operable time/min | 81 | 68 | 28 | 36 | ≥30 |
| Resolution/% | 0.8 | 0.4 | 2.2 | 2.0 | ≤3 |
| Air content/% | 11.2 | 9.2 | 14 | 12.7 | 8～12 |
| Bleeding rate/% | 0 | 0 | 4 | 2 | 0 |
| Rate of expansion/% | 1.7 | 2.0 | 0.7 | 0.9 | 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 | 90 | 97 | 100～300 |
| Frost resistance test (28 days) | ? | ? | ? | ? | ? |
| Mass loss rate/% | 2.6 | 0.8 | 4.2 | 4.9 | ≤5 |
| Relative resilient modulus/MPa | 95 | 98 | 71 | 67 | ≥60 |
Claims (18)
1. a frost resistance cement asphalt mortar comprises emulsified bitumen, cement, fine sand, swelling agent, aluminium powder, water; Take the weight of cement asphalt mortar as benchmark:
Emulsified bitumen 18.0%～25.0%,
Cement 22.0%～24.0%,
Fine sand 45.0%～47.0%,
Swelling agent 2.0%～2.6%,
Aluminium powder 0.0015%～0.0025%,
Water 6.0%～9.0%,
Emulsified bitumen prescription wherein comprises: pitch, cationic emulsifier, anionic emulsifier, thickening material, stablizer, water reducer, defoamer, alcohol, water; Take the weight of emulsified bitumen as benchmark:
Pitch 55.0%～65.0%,
Cationic emulsifier 0.5%～2.0%,
Anionic emulsifier 0.5%～2.0%,
Thickening material 0.01%～0.05%,
Stablizer 0.1%～0.25%,
Water reducer 0.1%～0.7%,
Defoamer 0.05%～0.1%,
Alcohol 0.8%～4.0%,
Water 33.0%～36.0%.
2. according to cement asphalt mortar claimed in claim 1, it is characterized in that used cement is silicate cement, strength grade is any one among 42.5R, 52.5, the 52.5R, 62.5; Used swelling agent is calcium sulphoaluminate class swelling agent; It is as follows that used fine sand is pressed the different-grain diameter proportion, take the weight of fine sand as benchmark:
Particle diameter 0.35～0.50mm 34%～39%,
Particle diameter 0.25～0.35mm 23%～25%,
Particle diameter＜0.25mm 38%～41%.
3. according to cement asphalt mortar claimed in claim 1, it is characterized in that: used water reducer is one or more in lignin sulfonate, naphthalenesulfonate formaldehyde condensation compound, the condensate of melamine and formaldehyde in the emulsified bitumen; 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.
4. according to cement asphalt mortar claimed in claim 1, it is characterized in that: used alcohols is one or more in ethanol, propyl alcohol, Virahol and the trimethyl carbinol in the emulsified bitumen.
5. according to cement asphalt mortar 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 in the emulsified bitumen.
6. according to cement asphalt mortar claimed in claim 5, it is characterized in that: the quaternary ammonium salt emulsifying agent described in the emulsified bitumen 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.
7. according to cement asphalt mortar claimed in claim 1, it is characterized in that: used anionic emulsifier is one or more in the sulfuric ester salt in the emulsified bitumen.
8. according to cement asphalt mortar 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 in the emulsified bitumen; 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.
9. according to cement asphalt mortar 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 in the emulsified bitumen; Described stablizer is one or more in calcium chloride, magnesium chloride, bariumchloride, the ammonium chloride.
10. according to cement asphalt mortar claimed in claim 1, it is characterized in that: used pitch is petroleum pitch in the emulsified bitumen, 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.
11. according to cement asphalt mortar 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.
12. according to the described cement asphalt mortar of claim 11, 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.
13. according to cement asphalt mortar 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.
14. according to the described cement asphalt mortar of claim 13, 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.
15. the preparation method of the arbitrary described cement asphalt mortar of claim 1 ~ 10 comprises: water and emulsified bitumen are added in the stirring tank, stir as liquid material; Then, stir on one side, successively cement, fine sand, swelling agent, aluminium powder are added in the above-mentioned liquid material on one side, after adding, whole siccatives stir, obtain cement asphalt mortar.
16. in accordance with the method for claim 15, it is characterized in that the preparation process of described emulsified bitumen is as follows: with asphalt heating to 110 ℃～165 ℃, obtain material I first; At normal temperatures, water reducer, defoamer and alcohol are mixed, then under whipped state, thickening material is added in the mixture of water reducer, defoamer and alcohol slowly, stir, make mashed prod, obtain material II; Jointly soluble in water cationic emulsifier, anionic emulsifier, stablizer, being prepared into soap lye and keeping temperature is 40 ℃～65 ℃, obtains material III; Then material I, material II and material III are transported to respectively in the colloidal mill, behind the colloidal mill Uniform Dispersion, become emulsion oil-in-water, when emulsion temperature drops to 60 ℃～70 ℃, go out system, obtain emulsified bitumen.
17. in accordance with the method for claim 16, it is characterized in that, in preparation emulsified bitumen process, when the preparation soap lye, 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.
18. according to claim 16 or 17 described methods, it is characterized in that, in preparation emulsified bitumen process, when the preparation soap lye, 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103803893A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Cement asphalt mortar and preparation method thereof |
| CN104151844A (en) * | 2014-08-06 | 2014-11-19 | 中南大学 | Cationic modified emulsified asphalt and application thereof in slab ballastless track |
| CN105524591A (en) * | 2014-10-24 | 2016-04-27 | 中国石油化工股份有限公司 | Solution for test on environmental stress resistance of hollow container and use thereof |
| CN107739613A (en) * | 2017-11-16 | 2018-02-27 | 中国铁路设计集团有限公司 | A kind of soil composite modifying agent of frost heaving resistant |
| CN112759943A (en) * | 2021-01-22 | 2021-05-07 | 熊彪 | Emulsified asphalt and preparation method thereof |
| CN116040988A (en) * | 2023-03-31 | 2023-05-02 | 中交四公局第六工程有限公司 | Anti-freezing asphalt pavement composition and pavement construction method |
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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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| CN101724278A (en) * | 2008-10-29 | 2010-06-09 | 中国石油化工股份有限公司 | Anti-freezing emulsified asphalt and preparation method thereof |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803893A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Cement asphalt mortar and preparation method thereof |
| CN103803893B (en) * | 2012-11-07 | 2016-02-03 | 中国石油化工股份有限公司 | A kind of cement asphalt mortar and preparation method thereof |
| CN104151844A (en) * | 2014-08-06 | 2014-11-19 | 中南大学 | Cationic modified emulsified asphalt and application thereof in slab ballastless track |
| CN104151844B (en) * | 2014-08-06 | 2016-10-05 | 中南大学 | A kind of cationic emulsified modified asphalt and the application in plate-type ballastless track |
| CN105524591A (en) * | 2014-10-24 | 2016-04-27 | 中国石油化工股份有限公司 | Solution for test on environmental stress resistance of hollow container and use thereof |
| CN105524591B (en) * | 2014-10-24 | 2018-06-12 | 中国石油化工股份有限公司 | A kind of hollow container resisting environmental stress and cracking test solution and its application |
| CN107739613A (en) * | 2017-11-16 | 2018-02-27 | 中国铁路设计集团有限公司 | A kind of soil composite modifying agent of frost heaving resistant |
| CN112759943A (en) * | 2021-01-22 | 2021-05-07 | 熊彪 | Emulsified asphalt and preparation method thereof |
| CN116040988A (en) * | 2023-03-31 | 2023-05-02 | 中交四公局第六工程有限公司 | Anti-freezing asphalt pavement composition and pavement construction method |
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