ABSTRACT
In this paper, the glass transition temperature (Tg) was used to evaluate the low temperature performance of foamed warm asphalt, ductility test and dynamic shear rheological test were used as well. Then the bending beam rheometer experiment was carried out to verify the results which were obtained frorm Tg and ductility test which shows that the low temperature performance of foamed SBS modified asphalt first decreases then increases with the increasing of water content. It could be found that the low temperature performance of foamed SBS modified asphalt is better than that of non-foamed SBS modified asphalt when water content is 3wt%. Meanwhile, the foamed crumb rubber modified asphalt has the similar low temperature performance. According to the comparison the results of BBR test, it could be concluded that it is suitable for Tg to evaluate the low temperature performance of warm mix asphalt.
