Abstract
It’s a chemical method that adding TOR into asphalt rubber to be TOR asphalt rubber mixture. In this study, 70# basic asphalt from Nanjing Jinling Company and 60 mesh waste rubber powder from Jiangyan Honglei Company were chosen for the SMA13 grading and SUP13 grading by the best preparation technology. The high temperature stability, anti-cracking performance and water stability of TOR asphalt rubber mixture were studied and the influence of dry and wet molding process on road performance of TOR asphalt rubber mixture was compared. The results show that both the dynamic stability and the low-temperature cracking performance of wet forming specimens are better than the dry process. The water stability of wet molding process is also slightly better than the dry process. And expansion rate tests were carried out on asphalt mixtures prepared by dry and wet forming processes on continuous gradation and discontinuous gradation to validate the applicability of discontinuous gradation to asphalt rubber.
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