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视开级配沥青稳定碎石ATPB骨架为由随机分布于约束空间的离散矿料组成,在此前提下分析混合料的细观特征,发现ATPB 25骨架的构成不仅与矿料最大粒径有关,对矿料级配也非常敏感,其中粒径大于6.0 mm的矿料主要起骨架作用,而粒径为4.75~6.0 mm的矿料在作为混合料骨架结构组成单元的同时,也可能起着填充骨架间空隙的作用,并随矿料级配形式的不同而变化。
The open-graded asphalt-stabilized gravel (ATPB) framework consisted of discrete mineral aggregates randomly distributed in the confined space. Based on this premise, the mesostructural features of the mixed material were analyzed. It was found that the ATPB 25 framework is not only related to the maximum size of the mineral aggregate, Mineral material gradation is also very sensitive, in which the ore size greater than 6.0 mm skeleton plays a major role, while the particle size of 4.75 to 6.0 mm of mineral aggregate composition as a component of the mixture may also play a role in filling The role of the gap between the skeleton, and with the different gradation of mineral aggregate changes.