SMA混合料配合比设计技巧及其应用

SMA Mixture Design Skills and Their Applications

SMA是一种优越的热拌沥青混合料类型 ,在我国已得到广泛的应用 ,其设计方法是在参考美国设计方法基础上产生的 ,但在应用过程中仍存在不足之处。文中提出了 3点设计技巧 :规划求解设计级配曲线、综合相对密度代替毛体积相对密度 (或表观相对密度 )和变换 VMA计算公式。经过试验验证 ,这些技巧实用、可靠 。

As an excellent HMA, SMA has been applied extensively in China, and its design method is produced from American Standards, but some disadvantages are found. The paper describes three skills which include the layout of designing grade curve, the gross volume or apparent relative density substituted by integrated relative density, and the formula of VMA tranformed. The skills are perfect and supplementary for SMA's design, and having been proved credibly by many trails.