Asphalt maxture for thin stratum pavement and thin stratum pavement of outer layer of asphalt thereof

摘要

PURPOSE: Provided is an asphalt mixture for thin layer asphalt pavement which improves resistance against plastic deformation at high temperature and cracking at low temperature by controlling the ratio of asphalt constituents and modifiers. CONSTITUTION: The asphalt mixture comprises 50-60wt.% of aggregates(5-8mm), 22-32wt.% of stone powder( 5mm), 7.5-9.5wt.% of filler, 6.5-7.5wt.% of asphalt, 0.26-0.3wt.% of styrene butadiene styrene(SBS) modifier for improving crack resistance at low temperature, 0.3-0.35wt.% of cellulose fiber and 0.24-0.28wt.% of ethylene vinyl acetate(EVA) modifier for decreasing plastic deformation at high temperature. The resultant asphalt mixture is paved on the roads in a thickness of 2-2.5cm.