直投式改性沥青混合料体积指标计算的探讨  

Calculation of Volume Indexes for Batch Plant Modified Bituminous Mixtures

作　　者：金牛娟 

机构地区：[1]上海市市政规划设计研究院,上海200031

出　　处：《上海公路》2015年第1期52-54,12,共3页Shanghai Highways

摘　　要：通过试验研究了直投式改性沥青混合料的理论最大相对密度和体积指标的计算问题。结果表明,直投式改性剂参与计算后,沥青混合料的理论最大相对密度和空隙率计算结果减小,矿料间隙率和有效沥青饱和度计算结果增大。对掺用直投式改性剂的沥青混合料,在配合比设计及体积指标计算时,直投式改性剂不宜忽略不计。The theoretical maximum specific gravity and volume indexes of bituminous mixture with batch plant bitumen moditier were investigated.It shows that taking the modifier into consideration,the calculated results of theoretical maximum specific gravity and volume of air voids(VV) decrease while voids in mineral aggregate(VMA) and voids filled with asphalt(VFA) increase.Therefore,the modifier should be taken into consideration in mix design as well as in volume indexes calculation.

关 键 词：直投式沥青改性剂 沥青混合料 体积指标 

分 类 号：U414[交通运输工程—道路与铁道工程]