Design of Mixture Ratio of Polymer Fiber Asphalt and Study on Road Performance
The Superpave mix design method and the balanced design method based on the densest state were used to design the mix ratio of fiber asphalt mixture,and the properties of two kinds of asphalt mixture with and without fibers were compared and analyzed.The results showed that:Superpave design method and tightest state de-sign method can be used to design fiber asphalt mixture at the same time.The final oil-stone ratio is determined by comprehensive analysis after comparing and analyzing the volume parameters of the two methods.After adding fi-ber,the indexes of asphalt mixture were improved.Among them,the low-temperature bending failure strain and dy-namic modulus are increased by more than 20%,the compressive strength and compressive resilience modulus are increased by more than 10%.
polymer fiberasphalt mixturemix ratio designroad performance
NETL
NSTL
万方数据
