Asphalt emulsifier
I. Overview
Asphalt emulsifier is a surfactant.Regardless of what type of surfactant, it is always composed of non -polar, hydrophobic oil hydrocarbon chains and polar, oil -sparse and hydrophilic groups. These two parts are often divided into surface surfaceThe two ends of the active agent molecules form an asymmetric structure.Therefore, the characteristic of the molecular structure of the surfactant is a two parent elements that are both liquid and hydrophilic, which have the function of connecting the two -way oil and water.
The emulsion asphalt produced by asphalt emulsion agent is simplified on -site construction. It does not need to heat the asphalt to 170 ~ 180 ° C before using it.EssenceBecause the asphalt emulsion has good work, it can be evenly distributed on the surface of the aggregate and produces good adhesion, so it can save asphalt dosage, simplify construction procedures, improve construction conditions, and reduce pollution to the surrounding environment.EssenceDue to these advantages, emulsification asphalt is not only suitable for paving pavement, but also protection on the slope of the embankment, waterproof waterproof of building roofs and cava, anti -corrosion of metal material surface, improvement of agricultural soil, and plant healthMany projects have been widely used.Because emulsion asphalt can not only improve the construction technology of thermal asphalt, but also continuously expand the scope of the application of asphalt, the rapid development of emulsion asphalt has been rapidly developed.
2. Classification and use
The asphalt emulsifier is classified according to the type of ion, and is divided into anion, cation, gender ions and non -ions.This classification method means that when the asphalt emulsifier is dissolved in the aqueous solution, all the ion -type asphalt emulsion agent that can be ionic or ionic beam is called an ionic emulsifier, an ionic emulsifier that cannot be ionized or beam.It is also divided into anion type, cationic type, and gender ion type.
According to the speed of milk breaking, it is divided into: fast cracks, medium cracks, slow cracks, slow crackers, and slow cracks.The emulsification asphalt produced with medium and cracked emulsifier is mainly used for spraying, paving surface treatment roads and penetrating pavement. Among them, the medium crack type is used more, and the fast crack type is very small.Spray in low temperature conditions.The emulsified asphalt produced by the medium crack can also be used for waterproof materials.The emulsifier produced with a slow -lobed emulsifier is mainly used for rare slurry seal layer, transparent oil, lower seal layer, and CA mortar.Among them, the slow -cracked and fast condensate type is suitable for the micro -watch office and the construction of the thin slurry sealing layer in high -level highway maintenance. The slow cracking type is suitable for the maintenance of ordinary roads.
How to use
The temperature of the asphalt is controlled at 120-130 ° C to ensure good activity; the amount of CZ1, CZ2 asphalt emulsifier is generally 6-12 ‰ of emulsion asphalt, that is, 6-12kg per ton of emulsion asphalt, soap temperature temperature, soap temperature temperatureIt is 60-70 ° C.During the second use, the asphalt emulsifier should be used with a larger limit, and the asphalt emulsifier per ton of emulsion asphalt per ton is more than 12 kg.The amount of asphalt emulsifier is generally 18-25 ‰ of emulsion asphalt, that is, 18-25kg per ton of emulsion asphalt, and the temperature of the emulsifier solution is 60-70 ° C.During the second use, the emulsifier should be used to ensure the successful production of emulsion asphalt. It is better to use 25 kg per ton of emulsion asphalt per ton. When the solid content is 50, add 50 kg per ton of water.Increase or decrease the amount of adjustment.
Before the production of emulsification asphalt, clean the equipment to prevent reaction with the primary emulsion asphalt; when the production of emulsification asphalt starts, the emulsifier water solution valve should be prescribed first, and the anhydrous solution of the emulsifier flows out of the colloid.%Grows upward. Once the production process is found to show that the glue grinding labor is laborious or the emulsion asphalt has flocculent group blocks, the amount of asphalt should be reduced immediately.After each production is completed, it is necessary to close the asphalt valve first, then turn off the emulsifier solution valve, and rinse about 30s to prevent the modified asphalt from the colloidal grinding and affect the next production.A large number of production can be produced after the production of emulsion asphalt.The secondary production control is within 0.5 tons.The fully automated emulsifier production equipment, SBS modified asphalt emulsification equipment, mixing station supporting emulsified asphalt production equipment, the operation is simple and convenient.
Fourth, sampling test
Under normal production conditions, samples are sampled. Because emulsifier asphalt in different storage tanks can mix with the different content emulsion emulsion emulsion produced before, so it is not.When performing asphalt content experiments, the small container is used to sample about 50g, and heated it on the electric furnace for 5-10 minutes, until the temperature reaches about 160 ° C.It should be noted that this method can only be used to determine the content of evaporation residue asphalt. When three major indicators need to be made, the sampling should be 300-500g to ensure that the evaporating residue asphalt reaches more than 200g, heated and evaporates to about 160 ° C, and insists on 30 min.
Five, sample observation
The emulsion asphalt sample should be sealed and observed for 1 day, stored in the translucent seal container and labeled. When storing with beverage bottles, clean the beverage bottle should be cleaned.After 1.18mm sieve, the appearance of the appearance should be removed when the screen is overwhelmed.
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