发育时间对橡胶沥青性能的影响

发布时间：2019-06-08 14:24

【摘要】：制备了不同发育时间的胶粉改性沥青样品,并通过动态剪切流变仪(DSR)和弯曲梁流变仪(BBR)等对其进行分析。用得到的高温指标(黏度、软化点、车辙因子等)和低温指标(延度、蠕变劲度)分析发育时间对胶粉改性沥青性能的影响。结果表明:胶粉改性沥青样品的高温性能和低温性能均较好;随发育时间的增加,胶粉和沥青的相容性变好,热储存稳定性变好,但温度敏感性变大,说明高温性能和低温性能有所下降。
[Abstract]:The modified asphalt samples with different development time were prepared and analyzed by dynamic shear rheometer (DSR) and bending beam rheometer (BBR). The effects of development time on the properties of rubber powder modified asphalt were analyzed by using the obtained high temperature indexes (viscosity, softened point, rut factor, etc.) and low temperature index (ductility, creep stiffness). The results show that the high temperature and low temperature properties of rubber powder modified asphalt samples are better than those of rubber powder modified asphalt samples at high temperature and low temperature. With the increase of development time, the compatibility of rubber powder and asphalt becomes better, the stability of heat storage becomes better, but the temperature sensitivity increases, which indicates that the high temperature performance and low temperature performance decrease.
【作者单位】： 中国石油大学(华东)重质油国家重点实验室;江苏天诺道路材料科技有限公司;
【分类号】：U414
，

本文编号：2495355