关键词: 道路工程, 温拌沥青混合料, 压实特性, 旋转压实, 棱角性

Abstract: In order to master the influencing factors of compaction characteristics of warm mix asphalt mixture, the physical significance of compaction energy index CEI, traffic densification index TDI, slope K1 and K2 was analyzed based on the gyratory compaction densification curve. The influence of the content of warm mixing agent, aggregate angularity and gradation on the above four compaction parameters of asphalt mixture was researched. The results show that Sasobit warm mixing agent can improve the compressibility of asphalt mixture in construction and the anti-deformation ability of asphalt mixture after open traffic, and the improvement effect is gradually enhanced with the increase of the content of warm mixing agent. When the aggregate angularity becomes better, the compressibility of the prepared asphalt mixture becomes worse, but the anti-deformation ability after open traffic becomes better. When the nominal maximum particle size of gradation increases or the gradation becomes coarse in asphalt mixture, its compressibility becomes worse, but the anti-deformation ability of asphalt mixture after open traffic is not significantly related to the nominal maximum particle size of gradation and the gradation thickness.

Key words: road engineering, warm mix asphalt mixture, compaction characteristics, gyratory compaction, angularity