细集料相对密度对沥青混合料矿料间隙率的影响研究  

Study on Influence of Relative Density of Fine Aggregate on Voids of Mineral Aggregate(VMA)in Bituminous Mixtures

作　　者：尹义林 金牛娟 陈亮 胡永刚 

机构地区：[1]上海市市政规划设计研究院,上海市200031

出　　处：《城市道桥与防洪》2015年第5期208-210,218,共4页Urban Roads Bridges & Flood Control

摘　　要：采用不同试验方法测定了细集料相对密度,分别计算了相应的矿料合成毛体积相对密度。分析了不同试验方法所测定的细集料相对密度对沥青混合料矿料间隙率(VMA)和有效沥青饱和度(VFA)计算结果的影响。结果表明,细集料相对密度采用毛体积相对密度时,矿料合成毛体积相对密度以及沥青混合料的VMA和VFA的计算结果要比采用表观相对密度时的计算结果显著下降。对某些配合比的沥青混合料,VMA计算结果难以满足现行规范要求。The specific gravity of fine aggregate is measured by the different test methods. The relative combined bulk volume density of aggregates is calculated. The influences of relative density of fine aggregate measured by the different test methods on the calculated results of voids of mineral aggregate(VMA)and voids filled with asphalt(VFA) are studied. The calculated results show that the VMA and VFA are obviously decreased when bulk relative density is used instead of apparent relative density. It is hard to meet the requirement of current specification for the VMA index as for some bituminous mixtures.

关 键 词：细集料毛体积相对密度 细集料表观相对密度 矿料合成毛体积相对密度 矿料间隙率(VMA) 

分 类 号：TU5[建筑科学—建筑技术科学]