Abstract
Because of the differences in material composition and structure, different natural asphalt will lead to different road performances and technical approaches. Based on years of research data, the composition and characteristics of different natural asphalt are reviewed. It is considered that the difference of performance of different natural asphalt is closely related to asphalt content and ash content. Aging property is related to oil content and microstructure of asphaltene. Because the mineral composition of lake asphalt is mostly volcanic ash, it shows different modification effect from natural rock asphalt, and has more advantages in the comprehensive performance of asphalt mixture, especially in low temperature performance and fatigue resistance.
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