关键词: 橡胶沥青;废旧胶粉;反应参数;力学性能;LMS

Abstract: The interaction effects of CRM binders as a function of various reaction parameters were investigated.Dynamic shear rheometer (DSR) and gel permeation chromatography (GPC) were used in the study.CRM binders were produced using seven blending time, three blending temperatures, and four rubber contents.The results show that the interaction time and interaction temperature for CRM binders have significant effect on the binder properties.The longer time and higher temperature for interaction of CRM binders resulted in an increase in the high failure temperature and the viscosity.Different blending treatments have little change of the binder properties.The CRM percentage influence is statistically significant on the viscosity and G*/sinδ values.Also, the asphalt binder with higher CRM percentage shows a higher large molecular size (LMS) value, and the increase in CRM percentage is considered to result in the additional loss of the low molecular weight in the asphalt binder to the CRM.

Key words: rubber asphalt;waste powder;reaction parameter;mechanical property;LMS