The three performance indexes of medium-temperature asphalt block, including ash content, resin content and quinoline insoluble matter, were analyzed and discussed in detail.
First of all, the ash content of a medium-temperature asphalt block refers to the residue that remains after it has been burned at high temperatures. The ash content has a great impact on the processing and use of medium-temperature asphalt. If the ash content is too high, it will lead to an increase in the viscosity of the asphalt and a deterioration of the flow properties, which will affect its processing and service performance.
Secondly, the resin content is also an important performance indicator of medium-temperature asphalt blocks. Resin is a polymer compound that has a great influence on the properties of medium-temperature bitumen such as viscosity, softening point, elasticity and weather resistance. The higher the resin content, the greater the viscosity of the medium-temperature asphalt, and the better the weather resistance and insulation.
Finally, quinoline insoluble substances refer to substances that cannot be dissolved by quinoline solution at a certain temperature and pressure. These substances may be some polymer compounds, heteroatomic compounds or other substances that are difficult to dissolve in asphalt. The higher the content of quinoline insolubles, the more complex the chemical structure and the more stable the quality of medium-temperature asphalt. Therefore, the content of quinoline insolubles is also one of the important indicators to measure the quality of medium-temperature asphalt.