Optimized Performance Design of Low Freezing Point Asphalt Mixture for Northern Mountainous Areas

Abstract Due to the lack of research on applicability and optimization design low freezing point asphalt mixtures in specific environments, especially for harsh environments mountainous areas during cold winter high humidity other seasons, there is a significant engineering demand. This paper carries out study performance northern areas. Through comparative analysis mixture technologies road mixtures, combined with climate driving characteristics areas, suitable selected. The shows that hygroscopicity M filler significantly stronger than Z filler, since relatively high, selecting fillers lower prepare can avoid safety accidents caused by excessively wet surfaces. SBS modified waste tire rubber powder both produce meet requirements standard performance, have good temperature performance. When conditions permit, recommended as first choice.