摘要
通过对球体颗粒的堆积和填充特性的研究,从理论上分析了骨架密实型沥青混合料集料中粗、细集料和填料的用量。结合逐级堆积理论和分形理论,根据粗、细集料的架构效应和填充作用的不同,提出了粗、细集料级配设计的数学公式,并给出了粗集料级配调整的数学公式,根据这些数学公式,得出了3种不同的设计级配。结果表明:骨架密实型沥青混合料中粗集料质量分数为74%,细集料质量分数为15.2%,填料质量分数为10.8%;集料的3种级配的体积参数均满足相应的规范要求,3种级配形成的混合料的稳定度和流值也均满足技术规范要求。
Through the study of packing and filling characteristics of aggregate, the dosages of coarse and fine aggregate and filling were calculated for aggregate of skeleton denseness asphalt mixture. According to the packing theory and the fractal theory, the mathematical models of coarse and fine aggregate gradation design were presented in terms of the different frame effects and filling actions of coarse and fine aggregate. The formulae of coarse aggregate adjustable gradation design were put forward. Three groups of the mineral gradations of asphalts mixtures were got by these equations. Results show that the coarse aggregate is 74%; the fine aggregate is 15.20% and the filler is 10.8% in skeleton denseness asphalt mixture; the volume parameters of three gradations, flow value and dynamic stability of three groups of asphalt mixtures all meet the needs of technical specification.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2008年第5期6-9,共4页
China Journal of Highway and Transport
基金
"十一五"国家科技支撑计划项目(2006BAJ04A004)
关键词
道路工程
骨架密实型沥青混合料
分形理论
级配设计
填充理论
堆积理论
road engineering
skeleton denseness asphalt mixture
fractal theory
gradation design
filling theory
packing theory
