A Comparative Study for Creep and Recovery Behavior Characterization of Modified Bitumens Using the MSCR Test

In recent decades, the application of modified bitumens has experienced tremendous growth. However, due to varying modification mechanism different modifiers, creep and recovery properties bitumen have not been comprehensively understood. This study aims evaluate several representative using multi-stress (MSCR) test. The MSCR test can highlight unique delayed elasticity it uses a high stress level, which is more comparable field. particular, this also identify effects aging conditions. To do so, total 15 bitumens, including 7 elastomeric-modified 5 non-elastomeric-modified 3 plain were prepared examined. Furthermore, 10 conditions considered. results suggest that generation varies for bitumens. There are two types elasticities, energy entropy elasticity, their differences need attention in road material community. Aging changes percentages contributions from bitumen’s overall performance. increase “bad” may compensate part “good” loss, but overall, rate decreasing ratio increasing, might hinder