二、沥青混合料 (一)定义和分类国际上对沥青碎石、沥青混凝土混合料或路面的定义及分类均不统一。如美国、日本等不分沥青碎石和沥青混凝土而统称为沥青混凝土,并按其集料中的最大粒径,空隙率和用途分为粗、细、密和开级配沥青混凝土。在苏联则有沥青碎石和沥青混凝土两种路面,而沥青碎石又分为使用均匀颗粒的石料和矿料混合料两种;沥青混凝土又根据矿 Second, the asphalt mixture (a) the definition and classification of asphalt gravel, asphalt concrete mixture or road definition and classification are not uniform. Such as the United States, Japan, regardless of asphalt and asphalt concrete, collectively referred to as asphalt concrete, and according to the maximum particle size in aggregate, porosity and use divided into coarse, fine, dense and open graded asphalt concrete. In the Soviet Union there are two types of asphalt pavement and asphalt concrete pavement, asphalt paving stones are divided into uniform particles and mineral aggregate two; asphalt concrete is also based on the mine