Summary of the invention
An object of the present invention is mainly to exist poor stability for the emulsified bitumen that solves above-mentioned emulsification asphalt cement mortar, ionic strength is higher, poor with the consistency of sand-cement slurry system, make that the emulsification asphalt cement mortar operable time of preparing is short, thermal adaptability is relatively poor, easily layering, pour into and be difficult to after 24 hours expand, problems such as fillibility difference, a kind of good stability is provided, ionic strength is lower, good with the consistency of sand-cement slurry system, the emulsification asphalt cement mortar operable time of preparing is long, thermal adaptability is better, be difficult for layering, expand easily railway that fillibility is good or light rail plate type slag-free orbit special-purpose emulsifying pitch.
Another object of the present invention provides a kind of railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous preparation method.
For achieving the above object, a technical scheme of the present invention provides a kind of railway or light rail plate type slag-free orbit special-purpose emulsifying pitch, and the mass parts prescription of this emulsified bitumen is as follows:
Pitch, 55-65 part; Water, 35.0-45.0 part; Emulsifying agent, 1.00-5.00 part; Stablizer, 0.20-3.00 part; PH value conditioning agent, 0.00-1.00; Thickening material, 0.10-1.50.Pitch is that label is rock asphalt, petroleum pitch, coal-tar pitch or the bituminous composition of 30~120#, can be used singly or in combination.The preferably rock asphalt of 50~100# and petroleum pitch.Pitch is the main body composition of emulsified bitumen.
Emulsifying agent is that in cationic, anionic asphalt emulsifier, non-ionic type asphalt emulsifier and the mineral emulsifying agent one or more are combined with each other, and presents the emulsifying agent mixture that splits attribute slowly.Cationic emulsifier has alkylamine (as the octadecyl Pn), acid amides (as N-aminoethyl acid amides), tetrahydroglyoxaline (as 1-aminoethyl-2-heptadecyl tetrahydroglyoxaline), oxyethane diamines, aminated lignin and quaternary amine (as octadecyl trimethyl ammonium chloride).Anionic emulsifier comprises carboxylate salt (as sodium soap), sulfonate (as sodium alkyl benzene sulfonate) and vitriol (as sodium alkyl sulfate).Nonionic emulsifying agent comprises polyoxyethylene-type (as polyoxyethylene alkylphenol ether), polyvalent alcohol type (as sorbitan ester) and polyether-type (as the polypropylene glycol ethylene oxide adduct).The mineral emulsifying agent mainly is clay, potter's clay, wilkinite, lime, asbestos etc.Use the mineral emulsifying agent can regulate the charge property of emulsified bitumen, increase emulsified bitumen stability and with the consistency of cement, reduce the cost of product simultaneously, emulsifying agent is that bitumen production is become emulsified bitumen and gives the key ingredient that emulsified bitumen has property.
Stablizer is an inorganic salts, and example hydrochloric acid salt, vitriol, nitrate, silicate, carbonate, sulfur hydrogen salt and composition thereof wherein are preferably calcium chloride, ammonium chloride, sodium sulfate, water glass, yellow soda ash and composition thereof.Stablizer increases repulsive force each other by regulating the ion-conductance potential difference of pitch particle electrostatic double layer on every side, strengthens the stability of emulsified bitumen.
PH value conditioning agent is divided into bronsted lowry acids and bases bronsted lowry, and wherein acid comprises mineral acid or organic acid, example hydrochloric acid, acetic acid, lipid acid, Whitfield's ointment etc.; Alkali wherein is sodium hydroxide or potassium hydroxide.PH value conditioning agent can be regulated the ionic strength and the emulsifying effectiveness of emulsifier solution by regulating the potential of hydrogen of emulsion, has vital role for this special-purpose emulsifying pitch of preparation.
Thickening material is natural or synthetic compound, can be starch, gelatin, amine, polyvinyl alcohol, Mierocrystalline cellulose, polyacrylate, polyether-type and polyurethane type thickening material.Thickening material adds in the entry can form colloidal solution, makes the viscosity of system rise the coalescent speed of having slowed down pitch particle; And can form protective membrane on the pitch particle surface, because space steric effect makes pitch particle be in good dispersion state.
Another technical scheme of the present invention provides a kind of railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous preparation method, and the preparation method is as follows:
1. pitch is heated to 110~150 ℃ standby;
2. in the water that the emulsifying agent and the stablizer of weighing joined 40~70 ℃, pH value to 2~12 according to the property adjustments solution of emulsifying agent after the stirring and dissolving, add thickening material and water, temperature 30-60 ℃ of control emulsion;
3. emulsion is injected the mulser that cleans up, start mulser;
4. heated bitumen is injected mulser and emulsion mixing by proportioning, under the high speed shear and dissemination of mulser, be dispersed in the emulsion;
5. railway or light rail plate type slag-free orbit special-purpose emulsifying pitch enter hold tank through tundish, can use after the cooling.
More particularly, the step of this method is as follows:
1. pitch is heated to 110~150 ℃ standby; Use multiple pitch if desired, with various pitches be heated to respectively in proportion 110~150 ℃ standby;
2. in the water that the emulsifying agent and the stablizer of weighing joined 40~70 ℃, according to prior art, pH value to 2~12 according to the property adjustments solution of emulsifying agent after the stirring and dissolving, add thickening material and water, temperature 35-55 ℃ of control emulsion;
3. emulsion is injected the mulser that cleans up, start mulser;
4. heated bitumen is injected mulser and emulsion mixing by proportioning, under the high speed shear and dissemination of mulser, be dispersed in the emulsion;
5. railway or light rail plate type slag-free orbit special-purpose emulsifying pitch enter hold tank through tundish, can use after the cooling.
Beneficial effect
The objective of the invention is at the shortcoming of existing preparation emulsification asphalt cement mortar with emulsified bitumen, a kind of new railway or light rail plate type slag-free orbit special-purpose emulsifying pitch and preparation method thereof are provided, to satisfy the requirement of railway or urban light rail ballastless track with the cement asphalt mortar preparation, characteristics and performance requriements according to emulsification asphalt cement mortar carry out the development of special-purpose emulsifying bituminous, by using mineral emulsifying agent and pH value conditioning agent, on the basis of the performance index that satisfy conventional emulsified bitumen, focus on slow fragility and ionic the adjusting at emulsified bitumen, consider that not only admixture is to the emulsified bitumen Effect on Performance, also take the influence of admixture simultaneously into account to hydrated cementitious, pass through reasonable proportioning, give full play to the synergistic effect of compound emulsifying agent, increased consistency with the sand-cement slurry system, emulsification asphalt cement mortar matrix material with the preparation of this kind emulsified bitumen has thermal adaptability and application property preferably, good weather resistance and anti-vibration fatigue property.
Embodiment
Further specify the present invention below in conjunction with embodiment, but not as a limitation of the invention.
Embodiment 1
Railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous mass parts prescription are as follows:
Table 1 railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous prescription
Pitch | Water | Emulsifying agent | Stablizer | PH value conditioning agent | Thickening material |
90# | | Octadecyl trimethylene diamines | Clay | Ammonium chloride | Hydrochloric acid | Polyvinyl alcohol |
60 | 36 | 2.5 | 1.2 | 0.8 | 0.2 | 0.5 |
Railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous manufacturing process are as follows:
1. pitch is dewatered post-heating to 130 ℃, the metering back is standby;
2. tap water is heated to 40~70 ℃, the metering back is standby;
3. emulsifying agent and the stablizer with weighing adds in the entry, adds pH value conditioning agent, after the stirring and dissolving, adds thickening material, and the temperature of control emulsion is 35~55 ℃, and is standby;
4. emulsion is poured in the mulser, is started mulser, pitch is joined in the mulser slowly, treat that pitch all adds after, treat that the emulsion color and luster evenly gets final product discharging;
5. the railway or the light rail plate type slag-free orbit special-purpose emulsifying bituminous seal that make are preserved.
Embodiment 2
Railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous mass parts prescription are as follows:
The prescription of table 1 emulsified bitumen
Pitch | Water | Emulsifying agent | Stablizer | PH value conditioning agent | Thickening material |
90# | | Sodium alkyl benzene sulfonate | Lime | Calcium chloride | Sodium hydroxide | Water glass |
55 | 41 | 1.8 | 0.8 | 0.4 | 0.1 | 0.9 |
Railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous manufacturing process are with embodiment 1.
Embodiment 3-9
Railway or light rail plate type slag-free orbit special-purpose emulsifying bituminous manufacturing process are with embodiment 1, and the prescription of emulsified bitumen is as shown in the table.
Raw material (ton) | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 |
Pitch | Petroleum pitch | 60 | 29 | 63 | 0 | 0 | 58 | 31 |
Coal-tar pitch | 0 | 33 | 0 | 55 | 65 | 0 | 30 |
Water | 35 | 45 | 38 | 42 | 40 | 41 | 39 |
Emulsifying agent | Octadecyl trimethylammonium ammonia chloride | 0.7 | 0.6 | 3 | 1.0 | 0.5 | 1.2 | 1.5 |
Polyoxyethylene alkylphenol ether | 0.3 | 0.4 | | 1.0 | 0.8 | | |
Potter's clay | 0 | 4 | 0 | 0 | 0 | 0.8 | 1.2 |
Wilkinite | 0 | 0 | 0 | 2.0 | 0 | 0.5 | 0.8 |
Asbestos | 0 | 0 | 0 | 0 | 2.2 | 0 | 0 |
Stablizer | Ammonium chloride | | 3 | | | 0.2 | | |
Calcium chloride | | | | | 0.4 | | |
Water glass | 0.2 | | 1 | | | 0.8 | |
Yellow soda ash | | | | 0.3 | | | 1.5 |
P H value conditioning agent | Hydrochloric acid | | 0.1 | 0.4 | | 0.2 | | |
Sodium hydroxide | | | | | | 0.5 | 0.3 |
Whitfield's ointment | 0.6 | | | 1.0 | | | |
| | | | | | | |
Thickening material | Mierocrystalline cellulose | | 1.5 | | | 0.5 | | |
Sodium polyacrylate | 0.1 | | 0.2 | | | 0.8 | |
Polyvinyl alcohol | | | | 1.0 | | | 0.6 |