Road asphalt includes heavy traffic asphalt; heavy traffic asphalt refers to asphalt used on highways or first-class roads with large traffic volumes. Road asphalt does not matter. As long as petroleum asphalt meets the JTJF2004 standard, it is road asphalt. .

Road asphalt is asphalt used to pave roads.

It is obtained by regular vacuum distillation of crude oil with appropriate properties. It can also be obtained by vacuum residual oil through shallow oxidation or propane deasphalting process. Asphalt with different ductility and penetration levels can also be used. Prepared by blending.

Heavy traffic asphalt: It is black and shiny semi-solid at room temperature. It gradually melts when heated and can be dissolved in organic solvents. This product has good fluidity, thermal stability, long-lasting adhesion, elastic-plasticity, electrical insulation and water resistance. It is produced by regular vacuum distillation of crude oil or oxidation and blending of the residue. It can also be produced by solvent deasphalting process and blending method. It can also be used as raw material for emulsified asphalt and diluted asphalt. Products are divided into five grades according to penetration: 50#, 70#, 90#, 110#, and 130#.

Both No. 70 and No. 90 asphalt are road asphalt. There is no better quality or worse quality. The difference between the two is the difference in penetration. The penetration of No. 70 and No. 90 asphalt is respectively 60-80 and 80-100, generally speaking, No. 70 asphalt is harder, while No. 90 asphalt is softer. From this aspect, the weather in the south is warmer and the temperature is higher, so it is suitable to use No. 70 asphalt, while The weather in the north is colder and the temperature is lower, so it is suitable to use No. 90 asphalt.