关键词: 道路工程, 高性能RAP料, 配合比设计, 粒子干涉理论, 最大密度曲线理论I法

Abstract: Firstly，the physical and mechanical properties of gradation RAP material were compared and analyzed in the vibration compaction and heavy hammer compaction tests; and the method of vibration compaction was ensured to be more representative for the actual compaction effect.Secondly，the particle interference theory was used to optimize the coarse aggregate gradation and the maximum density curve theory I method was used to optimize the fine aggregate gradation.Thirdly，the gradations with excellent physical and mechanical properties were proposed preliminarily by changing the ratio of coarse aggregate and fine aggregate and optimizing the gradation with double optimization index，that is the maximum dry density and strength.On the above basis，the regularity for the influence of the sieve pore passing rate on the mechanical properties of gradation RAP material was further researched.Fourthly，according to the principle of the optimal mechanical properties，the skeleton dense gradation of gradation RAP material was put forward on the base of the vibration molding.Finally，taking the split strength as index，the imitated steel fiber (PPTF) with the length of 2.5 cm and the content of 1 ‰ was proposed to be the reinforcement fiber of high-performance RAP material.

Key words: highway engineering, high-performance RAP material, mixture proportion design, the particle interference theory, the maximum density curve theory I method