级配碎石属于无结合料粒料材料,这与传统的半刚性材料有较大的差异。近些年随着级配碎石应用越来越多,级配碎石顶面功能层如何合理设置越来越受关注。针对级配碎石工程顶面功能层应用技术上的争议,根据近些年的工程应用经验,同时借鉴国外应用情况,进行级配碎石顶面功能层应用技术中,功能层的型式,是否撒集料、撒集料的时机等进行阐述。 Graded gravel belongs to the non-bonded aggregate material, which is quite different from the traditional semi-rigid material. In recent years, as graded gravel is used more and more, how to set up the top functional layer of graded gravel is getting more and more attention. According to the technical controversies on the top functional layer of graded gravel, according to the engineering application experience in recent years, at the same time, the application of the top functional layer of graded gravel, the type of functional layer, whether Sprinkle aggregate, sprinkle aggregate timing and so on.