SMA设计中理论密度对沥青用量的影响分析  

Impact of Theoretical Specific Gravity on the Asphalt Dosagein the Mixtures Design of SMA

作　　者：王捷[1] 符冠华[1] 

机构地区：[1]江苏省交通科学研究院,南京210017

出　　处：《交通科技》2002年第5期31-34,共4页Transportation Science & Technology

摘　　要：通过举例 ,对 SMA设计中几种最大理论密度的确定方法进行对比分析 ,得出最大理论密度计算方法不同 ,将影响空隙率的大小 ,从而造成最佳沥青用量的差异。根据分析结果 ,推荐用实测法或毛视平均密度法确定理论密度。Based on the examples, calculation methods of theoretical specific gravity in the mixtures design of SMA were compared and analyzed.And conclusions were obtained: different calculation methods of theoretical specific gravity would affect the volume of air void, thereby caused the difference in the optimum proportion of asphalt to aggregate.According to the analytical result, test method and average specific gravity from bulk specific gravity and apparent specific gravity of aggregate were recommended to calculate the theoretical specific gravity.

关 键 词：SAM设计 理论密度 沥青用量 空隙率 最佳油石比 配合比 公路 沥青混合料 

分 类 号：U414[交通运输工程—道路与铁道工程] U415.6