悬浮骨架密实结构配合比设计

针对基层骨架 密实结构混合料易出现离析问题的工艺缺陷,提出了一种全新的组成结构:悬浮骨架 密实结构。它的各级集料的比例是根据粗一级集料在细一级集料中即将相互搭结形成骨架而实际上未相互搭结形成骨架的原则计算的。它的小于2 36mm的细集料剂量是根据填充料最大干密度试验值与计算值相等的原则确定的。试验表明,这种结构解决了传统骨架密实结构的工艺缺陷(离析)和设计缺陷(填充料中结合料与细集料的比例缺乏理论指导),又继承了强度高、抗裂性好、抗疲劳性优的特点,因此有一定的应用价值。

Mix design of suspended framework dense structure

This paper put forward a new structure: suspended framework dense structure.It's aggregate gradation is determined by the principle that coarse-grained material will but not in fact contact with each other in fine-grained material.It's fine-grained percent is fixed on the law that fill material's test value of the greatest dry density must equate computing one. Tests indicate that this structure solves the problem of fine-grained material'.s separation from coarse-grained one and maintains high strength,good crack-resistance property,good fatigue-resistance property of framework dense structure.