再生SBS改性沥青混合料配合比设计方法

Research on Mix Design Method of Recycled SBS Modified Asphalt Mixture

SBS改性沥青路面的养护维修将产生大量回收SBS改性沥青混合料。与回收普通沥青混合料相比,回收SBS改性沥青混合料具有更高的利用价值。在现行规范设计方法的基础上进行补充完善,形成再生SBS改性沥青混合料配合比设计方法,设计内容主要包括RAP料中老化SBS改性沥青老化程度的判别、老化SBS改性沥青的再生设计、RAP掺量的确定、新沥青用量确定等。

With the maintenance of SBS modified asphalt pavement,a large amount of recycled SBS modified asphalt mixture will be produced.Compared with the recycled ordinary asphalt mixture,the recycled SBS modified asphalt mixture has the higher utilization value.On the basis of the current standard design method,the method of mix design of recycled SBS modified asphalt mixture is formed.The design contents mainly include the distinguishing of the aging degree of aged SBS modified asphalt in RAP materials,the regeneration design of aged SBS modified asphalt,the determination of RAP content and the determination of new asphalt content.