基于GTM的高掺量RAP热再生混合料压实特性

对比了高掺量回收沥青路面材料（RAP）的热再生混合料在旋转压实剪切试验机（GTM）旋转压实和马歇尔击实条件下的体积指标和压实参数．GTM 试验表明热再生混合料比非再生混合料容易压实，RA P掺量越大越容易压实，马歇尔击实法在设计高掺量 RA P热再生混合料存在局限性．并利用RAP的扫描电镜（SEM ）照片分析了原因．

Compaction Characteristics of Central Plant Hot Recycling Mixture With High Content RAP Based on GTM

The paper compared the volume indicators and compaction parameters of central plant hot re-cycling mixture with high-content reclaimed asphalt pavement （RAP） at gyratory testing machine （GTM ） and Marshall compaction machine .The GTM experiments show that the hot recycling mix-ture is more easily compacted than non-renewable mixture ,the RAP content the greater the more easi-ly compacted ,Marshall compaction method has limitations in the design of high content RAP hot re-cycling mixture .the cause is analyzed from RAP scanning electron microscopy （SEM ） image .