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针对胶粉改性沥青混熔体系作用机理和半固态连续相结构特性,结合现行规范,对胶粉改性沥青高温稳定性、低温抗裂性、弹性恢复性能和抗老化性能的评价指标和试验检测方法进行适应性分析,认为常规的针入度、软化点、延度、当量脆点等指标不适应于橡胶沥青混熔改性机理,不能有效表征其实际性能,建议采用旋转粘度、弹性恢复及SHRP体系中的车辙因子G*/sinδ和蠕变劲度S、蠕变速率m等指标来评价其技术性能,以此指导生产和推广应用。
According to the mechanism of action and the structural characteristics of semi-solid continuous phase in rubber powder modified asphalt mixed system, the evaluation index and test of high temperature stability, low temperature crack resistance, elastic recovery performance and anti-aging performance of rubber powder modified asphalt It is considered that the conventional indexes such as penetration, softening point, ductility and equivalent brittleness point are not suitable for the mechanism of rubber asphalt mixing and can not effectively characterize the actual performance. It is suggested that the rotational viscosity and elastic recovery And the rutting factor G * / sinδ and creep stiffness S and creep rate m of the SHRP system to evaluate its technical performance, so as to guide the production and popularization and application.