Evaluation of Heat Storage Stability of SBS Modified Asphalt
Eight kinds of SBS modified asphalts are studied comparatively with the T0661 method described in "Standard test methods of asphalt and bituminous asphalt mixtures for highway engineering" (JTJ052 -2000) and every kinds SBS modified asphalt and hot storage segregation tests top and bottom sample are taken dynamic sheer test with Dynamic Sheer Reheometer AR-2000 in order to get the dynamic mechanics temperature spectrum of SBS modified asphalt . Based on the analysis of experiment data , it is found that evaluating the storage stability only by the standard that △t is no more than 2. 5℃ would be insufficient and unreasonable. The SBS modified asphalt in store will produce softening point rise or attenuation, and these will also lead to using properties instability. The platform area of loss factor tanS whether appearing or not is not necessarily associated with the SBS modified asphalt storage stability stand or fall.
SBS modified asphaltstorage stabilitysegregation testdynamic mechanics temperature spectrumsegregation rate
NETL
NSTL
万方数据
维普
