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Description and Classification of Asphalt Emulsifiers and Applications

Asphalt emulsifier is an emulsifier that belongs to the category of surfactants and is a raw material for the production of emulsified asphalt.
Emulsifiers are divided into: synthetic emulsifiers, natural emulsifiers, inorganic powder emulsifiers, etc. Currently, synthetic emulsifiers are widely used. Asphalt emulsifier is a type of chemical organically synthesized surfactant.

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Asphalt emulsifier is an emulsifier that belongs to the category of surfactants and is a raw material for the production of emulsified asphalt.
Emulsifiers are divided into: synthetic emulsifiers, natural emulsifiers, inorganic powder emulsifiers, etc. Currently, synthetic emulsifiers are widely used. Asphalt emulsifier is a type of chemical organically synthesized surfactant.
The proportion of asphalt emulsifier in emulsified asphalt is very small, but its role is crucial. The proportion in emulsified asphalt is generally between 0.2-2.5%. The function of asphalt emulsifier is to transform asphalt into asphalt emulsion. Asphalt is solid at room temperature and needs to be heated when used. After heating, the temperature is high and the risk factor increases during use. However, asphalt emulsion is liquid at room temperature and can be used directly or by adding water without heating. The function of asphalt emulsifier is to make the application of asphalt simple, convenient, safe and environmentally friendly.
Asphalt emulsifiers can be divided into three types according to their ionic properties: anionic, cationic and nonionic.
Cationic emulsified asphalt has the characteristics of good bonding performance, good compatibility with stone materials, and the stone materials at the construction site do not need to be heated. Most of the asphalt emulsifiers currently used in the highway industry are cationic emulsifiers. According to the different speed and effect of demulsification, it is divided into three types: slow cracking type, medium cracking type and fast cracking type. Slow cracking and slow setting type is mainly used as translucent oil. Slow cracking and fast setting are used for micro-surfacing, slurry sealing, cold regeneration, etc. The uses of medium-crack type and fast-crack type are roughly the same. They are mainly used for the production of bonding materials such as adhesive layer oil, gravel seal layer and waterproof base oil.
In short, the emulsified asphalt is selected according to the use needs, and then the asphalt emulsifier for production is selected. Find answers to your questions! If you still don’t find the answer you need, please call the number on the website!

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    Emulsified modified asphalt equipment is classified according to the production process and can be divided into three types: intermittent emulsified modified asphalt equipment, semi-continuous emulsified modified asphalt equipment, and continuous emulsified modified asphalt equipment. During the production of emulsified modified asphalt equipment, demulsifier, acid, water, and latex modified materials are blended in a soap mixing tank, and then pumped into the asphalt into the colloid mill. After a can of soap is used up, the soap is redispensed, and then the production of the next can is completed.
    The emulsified modified asphalt equipment mentioned here includes hot water pumps and circulation pumps. This type of centrifugal water pump generally uses a pipeline centrifugal pump. There is a sewage outlet at the bottom of the pipeline centrifugal pump. Pay attention to the sewage outlet at the bottom of the emulsified modified asphalt equipment pump. The water in the water tank is released through the filter valve. Some emulsified modified asphalt equipment does not have a filter valve to save equipment costs, so it can only be emptied by loosening the flange bolts at the bottom. There are basically two methods of moisturizing emulsion pumps for emulsified modified asphalt equipment on the market, gear oil pumps or centrifugal water pumps. The gear oil pump can only drain the liquid in the pump through the connecting flange of the pipeline. The centrifugal water pump carries out sewage treatment through its own sewage outlet.
    When used in the production of emulsified modified asphalt equipment, depending on the modified material technology, the latex pipeline can be connected in front of the colloid mill or behind the colloid mill, or there may be no latex pipeline and it must be made manually. Add the required amount of latex into the soap jar.

    Improve the understanding of the importance of preventive maintenance
    We should further improve the understanding of the importance of preventive maintenance and raise preventive maintenance to the level of highway asset protection and road protection. At present, leaders at all levels and maintenance departments do not fully understand the significance of preventive maintenance of asphalt pavement. We should deepen our understanding of the important role of preventive maintenance and improve the strategic awareness, initiative and creativity of preventive maintenance. At the same time, the maintenance department should strengthen communication and exchanges with transportation authorities and financial management departments at all levels, so that departments at all levels understand the importance and necessity of preventive maintenance and create conditions for the implementation of preventive maintenance and funding sources. At the same time, it is very necessary to add preventive maintenance to the classification of maintenance projects, which will help the management of leaders at all levels and the implementation of preventive maintenance.
    Improve the decision-making and planning of preventive maintenance
    According to the decision-making and planning process, reasonably arrange the preventive maintenance of asphalt concrete pavement structure to ensure the safe and stable operation of highway projects throughout the life cycle, and reduce production costs while providing high-quality traffic services. Therefore, the key to preventive maintenance of asphalt concrete pavement structure lies in establishing a scientific decision-making and planning mechanism. The Ministry of Transport proposed in the “13th Five-Year Plan for Highway Maintenance Management Development” that the average annual mileage of preventive maintenance for expressways should not be less than 8%, and that for ordinary national and provincial roads should not be less than 5%. In the actual application process, local governments should also actively summarize experience and propose different preventive maintenance ratios based on the specific conditions of different regions.