This paper introduces a novel pretreatment method of RAP fine separation.It also provides a scientifically and deeply comparison between this method and traditional crushing technology regarding the recycling characteristic of RAP materials.This comparison utilizes the proposed deviation(％)of screen residue rate(the difference between the old material after crushing and screening and the screen residue of each screen hole after extraction)and the variation coefficient(CV,％)of RAP material gradation.The results show that using the fine separa-tion process to treat RAP can better control the false particle size content and asphalt content in old materials,and can effectively ensure the gradation stability of recycled asphalt mixture.
NETL
NSTL
万方数据
