Analysis of SBS Modified Asphalt for Shearing and Developing Process

Abstract

Microscopic observation through fluorescent optical microscopy and dynamic mechanical and normal tests were performed in the mechanical mixing process of different types of SBS and asphalt of different compositions. Dynamic mechanical tests and microscopic observation are both valid measures in estimating if SBS polymer is dispersed and developed stably. Dynamic mechanical tests have better sensitivity than the latter. The degree of shearing and development can be evaluated only by dynamic mechanical tests while both microscopic observation and normal tests are needed.