摘要
Abstract
In this paper,the low temperature performance,fatigue frequency,residual strength ratio and residual stability of asphalt mixture were studied.The results show that the fatigue frequency of warm-mixed asphalt mixture first increases and then slowly decreases during the in-crease of viscosity reducing agent content,and the highest value is when 3%Sasobit is added,and the fatigue frequency is 16.3%higher than that of matrix asphalt,and the fatigue resistance of warm-mixed asphalt mixture is higher than that of conventional hot-mixed asphalt in the test range.At-10℃,the bending and tensile properties of the warm mixed asphalt mixture mixed with Sasobit viscosity reducing agent are not improved significantly,and the bending and tensile strain changes are small.However,the bending strain decreases with the increase of viscos-ity reducing agent content,which indicates that the excessive addition of viscosity reducing agent will have an adverse effect on the low temper-ature cracking resistance of asphalt mixture.The warm mixed asphalt mixture with 3%Sasobit viscosity reducer has the best pavement perform-ance.关键词
沥青混合料/温拌沥青/降黏剂/路用性能Key words
Asphalt mixture/Warm mix asphalt/Viscosity reducer/Road performance分类
交通工程
