Research on Mix Design Method and Application of Asphalt Rubber Open-graded Friction Course

摘要

Recent years, asphalt rubber open-graded friction course ( AR-OGFC ) has attracted more and more attentions in China. In this paper, based on laboratory analysis and application experiences, mix design method of AROGFC using Marshall Test and mix gradation was recommended. On this basis, key technologies of AR-OGFC overlay structural design were studied, such as the treatment of underlying pavement, selection of track coat, etc. Finally, performances of AR-OGFC overlay of two trial sections were summarized and analyzed.