Research on Development and Performance High Viscosity Modified Asphalt at Room Temperature
In order to further improve the durability and road performance of slurry asphalt mixtures,a high viscosity and good stability modified emulsified asphalt-room temperature high viscosity modified asphalt-was devel-oped.The process of first modification and then emulsification was adopted,and the performance of high vis-cosity modified asphalt and before and after emulsified performance were analyzed and compared at different raw material dosages.It was determined that 8%SBS+2%viscosity enhancer was used for high viscosity modi-fied asphalt,and the optimal dosage of emulsifier B1 was 2.4%.The adhesion performance of high viscosity modified asphalt at room temperature and the wear resistance of mixed mixtures were further verified through pull-out tests and wet wheel wear tests,which far exceeded conventional modified emulsified asphalt.
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