沥青混合料矿料级配分布特性的研究  

Research of Distribution Characteristics for Asphalt Mixture Aggregate Gradation

作　　者：常宇捷 马健 咸欢 

机构地区：[1]长安大学公路学院,西安市710064 [2]辽宁省交通工程质量与安全监督局,沈阳市110005

出　　处：《北方交通》2017年第8期35-39,共5页Northern Communications

摘　　要：利用常见粒度分布模型对四种沥青混合料级配进行拟合。首先,比较G-S分布模型、R-R模型、Alfred模型数学形式与物理意义,总结其相互转化关系,将模型形式转化为线性关系比较其与分形理论异同,表明三种分布模型也具有分形特征。拟合结果表明,三种分布模型拟合情况相关性都较为理想,但G-S模型与R-R模型存在部分粒径通过率偏差过大,通过借鉴SAC沥青混合料级配设计方法,将粗细集料分段拟合,可以达到理想结果;另外,通过增加可变参数,修正R-R模型,计算结果表明,该修正模型对沥青混合料级配走向可以进行很好的拟合与表征。Using the common particle size distribution models fitting the four kinds of asphalt mixture gradation. Firstly,make a compare of the G-S model,the R-R model,the Alfred model with mathematical form and the physical meaning for them. Making the linear transformation to research the relationship between them and the fractal theory,and the three distribution models also have fractal characteristics. The fitting results show that the correlation between the three distribution models is ideal,but there is some deviation between the G-S model and the R-R model. By using the SAC asphalt mixture gradation design method making piecewise fitting for course and fine,and the results is ideal. By increasing the variable parameter to modifythe R-R model and the results show the modified model can be well fitted the gradation of asphalt mixture.

关 键 词：沥青混合料 级配 粒度分布模型 分形理论 SAC级配设计 修正R-R模型 

分 类 号：U414.01[交通运输工程—道路与铁道工程]