What are the upstream raw materials of heavy asphalt? What are the downstream products?

Heavy asphalt plays an crucial role in the field of raw materials to chemical production, and its upstream and downstream related items are quite abundant. And From what I've seen, The following are some of the main upstream and downstream related items:

Upstream items:



1. Crude oil: The main raw material of heavy cross asphalt is crude oil, and the raw material to the production of heavy cross asphalt is able to be obtained by refining the residual oil component of crude oil.

2. Residual oil: Residual oil is a by-product in the crude oil refining process and is the key raw material to the production of heavy asphalt. Additionally Downstream items:



1. Modified asphalt: On the basis of heavy asphalt, by adding modifiers, modified asphalt with better performance is able to be produced to the construction of high-grade highways and bridges.

2. I've found that Emulsified asphalt: the heavy asphalt and emulsifier, aquatic environments and other mixing, is able to create emulsified asphalt, applied to road maintenance, waterproof and other projects.

3. Asphalt mixture: Mixing heavy asphalt with mineral aggregate is able to create asphalt mixture to pavement construction. From what I've seen, Specifically In addition, the upstream and downstream related items of heavy cross asphalt also include some auxiliary materials and additives, such as anti-stripping agents, anti-rutting agents, etc. These items is able to enhance the performance and condition of heavy cross asphalt. In summary, the upstream and downstream related items of heavy asphalt are quite rich, and their consumption fields are also very wide, which has an crucial position in the field of chemical production raw materials.