铁道科学与工程学报2018，Vol.15Issue(2)：369-377,9.
离析模式对沥青混合料密度和构造深度的影响
Influence of segregation patterns on density and texture depth of asphalt mixture
摘要
Abstract
In order to study the influence of segregation on the quality uniformity of asphalt pavements and to determine rational characterization indicators, 5 types of asphalt mixtures were designed in the laboratory, including no segregation, fine aggregate segregation, light, medium and high segregation. Through imitating the combination of different segregation, marshal specimens and rutting slab specimens were formed in laboratory, and then the density of marshal specimens and density and texture depth of the rutting slab specimens were measured and analyzed respectively. Results show that the density of asphalt mixture is significantly affected by segregation patterns. The density is sensitive to the variation of construction and is suggested as a integrity detection indicator for the construction quality of asphalt pavements. The influence of aggregate segregation on mixture texture depth shows good regularity, that is fine aggregate segregation < no segregation < coarse aggregate segregation. The coarse aggregate segregation will lead to damage of pavement and should be eliminated. The variation of road surface texture depth is suggested to assess the aggregate segregation situation of asphalt pavement and further to evaluate pavement uniformity.关键词
沥青混合料/离析模式/均匀性/密度/构造深度Key words
asphalt mixture/segregation patterns/uniformity/density/texture depth分类
交通工程引用本文复制引用
张争奇,黄硕磊,石伟,崔文社..离析模式对沥青混合料密度和构造深度的影响[J].铁道科学与工程学报,2018,15(2):369-377,9.基金项目
国家自然科学基金资助项目(51008031) （51008031）
交通运输部应用基础研究资助项目(201431981215) （201431981215）
陕西省交通科技资助项目(2014-01K) （2014-01K）
