摘要
Abstract
In order to improve the durability of asphalt pavement and prolong the service life of heavy traffic asphalt pavement,graphene oxide(GO)and rubber powder(RP)were used as composite modiators to modify matrix asphalt.The high temperature rheological properties of composite modified asphalt at different temperatures and frequencies were analyzed.The results show that the composite modified asphalt has good rheological properties at low temperature,the surface is relatively smooth,and the segregation problem of rubber powder in the matrix asphalt is improved.After adding graphene oxide,the R-value of rubber powder modified asphalt was increased by 21.2％.By observing the non-recoverable creep compliance value,it is found that the minimum value of GO/RP composite modified asphalt is 3.115,31.3％lower than that of rubber powder modified asphalt.Both results show that GO/RP composite modified asphalt has better creep recovery ability.关键词
石墨烯/橡胶粉/沥青/流变性能Key words
Graphene/Rubber powder/Asphalt/Rheological property分类
交通工程
