级配理论应用研究

在对最大密度曲线理论和粒子干涉理论及相关级配算法研究的基础上,提出了变i法及相应算法.通过变i法计算的集料级配与规范中AC-16、SMA-16、Sup-12 5级配和以粒子干涉理论为依据设计的多级嵌挤密实结构级配的比较,给出了满足AC-16、SMA-16和Sup-12 5级配的相应i值范围,并结合工程实例对变i法在AC-16型沥青混合料设计中的应用进行了检验.结果显示,利用该方法设计的级配,较好的满足了设计要求.同时也说明变i法能较好的适应我国沥青混合料级配采用方孔筛的划分标准及不同沥青混合料类型的级配设计要求.

Study on the application of grading theory

By studying the maximum density curve theory,particle interfering theory and different grading calculus,the varying i method and calculating formula were put forward to grading design.Then the ranges of i were presented to AC-16,SMA-16 and Sup-12.5 according to contrast aggregate gradations from varying i method with AC-16,SMA-16, Sup-12.5 and skeleton dense structure gradation designed on particle interfering theory.Furthermore,it was verified by applying the varying i method to the grading design for AC-16 mixture on the basis of practice in project.The result shows it can satisfy well the design request by using the method to design aggregate gradations.At the same time the varying i method adapts preferably to the square-mesh sieve in asphalt mixture and design request of aggregate gradations for different kinds of asphalt mixtures.