A brief discussion on the difference between modified asphalt and emulsified asphalt
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A brief discussion on the difference between modified asphalt and emulsified asphalt
Release Time:2024-04-15
As a novice who has just entered the road maintenance industry, today we will learn about the differences between emulsified asphalt and modified asphalt that we commonly use in road maintenance construction.
First of all, the obvious difference between emulsified asphalt and modified asphalt is that emulsified asphalt contains water, while modified asphalt does not.
Emulsified asphalt is a temporarily stable emulsion formed by dispersing hot asphalt into water (oil-in-water) through an emulsifier, or dispersing water into asphalt (water-in-oil). The continuous phase is water and the dispersed phase is asphalt. Asphalt exhibits solid-like properties at normal temperatures and liquid-like properties at high temperatures. Therefore, after the asphalt is dispersed into water, it can be used at room temperature. This is the biggest advantage of emulsified asphalt. In a nutshell, the asphalt heated to liquid is mixed with an emulsifier, stabilizer, acid or alkali using a colloid mill to obtain emulsified asphalt.
A brief discussion on the difference between modified asphalt and emulsified asphalt_1A brief discussion on the difference between modified asphalt and emulsified asphalt_2
Modified asphalt is relatively simple. Pure asphalt is called matrix asphalt, and adding a modifier to the matrix asphalt becomes modified asphalt. According to the type of modifier, it is divided into polymer modification, such as SBS modified asphalt, SBR modified asphalt and other HVA high-viscosity asphalt, etc.; natural asphalt modification, such as Trinidad Lake asphalt, Budonite asphalt, etc.; there are Research has mentioned modification of inorganic non-metallic materials, such as bentonite modification. Different types of modifiers can greatly change the properties of asphalt. For example, SBS can increase the ductility of the base asphalt to more than 1.5 meters. The intuitive feeling is that the asphalt can be drawn into filaments. We can choose modified asphalt that suits our needs according to our working conditions.
In fact, emulsified asphalt and modified asphalt can coexist, but the classification methods are different. For example, SBS modified asphalt is emulsified to obtain SBS modified emulsified asphalt; SBR latex is added to ordinary emulsified asphalt and mixed to obtain SBR modified emulsified asphalt.
Sinosun Company has been engaged in the field of highway maintenance for many years and has rich construction experience. It undertakes highway maintenance construction projects such as micro-surfacing, slurry sealing, potting engineering, gravel sealing, transparent layer | adhesive layer construction, and sells emulsified asphalt production. equipment, slurry sealing machine, synchronous gravel sealing machine and other road maintenance equipment. Our company produces asphalt emulsifiers and related emulsified asphalt suitable for micro-surfacing, slurry sealing and other working conditions. New and old customers are welcome to call for consultation!