Chemical composition of solid asphalt complex, to analyze the composition of difficult, and its chemical composition does not reflect differences in asphalt, it is generally not for chemical analysis of asphalt. Typically used from the point of view, will pitch in the chemical composition and physical and mechanical properties of similar composition is divided into several groups, these groups are called "components". Components of solid bitumen and its main properties are as follows: the oil, resins, and asphaltenes.