The body of the article:
The main component of modified asphalt
Modified bitumen is a polymer compound with a very complex composition that is mainly composed of the following substances:
1.Asphaltene.
Asphaltene is the main component of modified asphalt, accounting for more than 50% of the whole asphalt. It is a heavy component with a dark brown or black color and a high viscosity and relative density. Asphaltene is one of the main factors determining the physical properties and chemical properties of modified asphalt, and has an important impact on the viscosity, stability and durability of modified asphalt.
2.Colloid.
Gum is another important component in modified asphalt, accounting for about 30% of the whole asphalt. It is a polymer compound, dark brown or black, with good adhesion and rheology. The main function of gum is to improve the adhesion and rheology of asphalt, and at the same time, it can also increase the softening point and durability of asphalt.
3.Saturated hydrocarbons.
Saturated hydrocarbons are also one of the important components in modified asphalt, accounting for about 15% of the whole asphalt. It is a lightweight component with low viscosity and relative density. The role of saturated hydrocarbons is mainly to reduce the viscosity and relative density of asphalt, while also increasing the volatility and stability of asphalt.
4.Aromatic hydrocarbons.
Aromatic hydrocarbons are another lightweight component in modified bitumen, accounting for about 5% of the total bitumen. It has high volatility and chemical activity, which can increase the chemical stability and durability of asphalt.
To sum up, the main components of modified asphalt include asphaltene, gum, saturated hydrocarbons and aromatic hydrocarbons. The ratio and content of these substances have an important impact on the performance and application of modified asphalt. When preparing modified asphalt, it is necessary to select appropriate raw materials and process conditions according to different uses and requirements to ensure that the quality and performance of modified asphalt meet the requirements.