| The basic performance and hot storage stability of asphalt modified with ultra-fine full-vulcanized SBR powder (UFPSBR) were investigated, in which UFPSBR was prepared by in-situ process at low temperature and high shear.The results showed that,with the addition level of UFPSBR increasing,the penetration at 25 ℃ of asphalt decreased,and the softening point increased.By adding compatibilizer,the equivalent softening point(T800) of asphalt increased,and the equivalent breaking point (T1.2) decreased.Without compatibilizer,UFPSBR in asphalt agglomerated.By adding compatibilizer,the compatibility between asphalt and UFPSBR enhanced,and relatively stable phase boundaries were formed.The compatibilizer could greatly enhance the hot storage stability of asphalts modified with UFPSBR. |
