中山大学学报（自然科学版）2009，Vol.48Issue(6)：48-53,6.
级配对矿质颗粒体离析的影响研究及应用
Research and Application of the Gradation Impact on Mineral Granular Masses Segregation
摘要
Abstract
The gradation impact on mineral granular masses segregation was studied for less segregation materials in pavement. The segregation test was built for pavement material detection, and mineral granular materials of different gradation index was designed by gradation theory. According to segregation test, the relation between gradation and segregation of granular masses was analyzed with gradation index, average diameter and diameter distribution index as the representation parameters of gradation. For granular masses with the same maximum diameter particle, the study shows that average diameter and diameter distribution index both having critical value, the critical value gradation has the minimize segregation and other gradations have more serious segregation. Critical value gradation is the gradation that remains reasonable voids when the next smaller particles fill the voids left by the bigger particles. It also found that average diameter and diameter distribution index have a good correspondence and the latter reduces with the former increasing. Finally, the results of mineral granular material segregation test and asphalt mixture segregation in pavement was analyzed.关键词
道路工程/颗粒体/连续分布模型/离析/粒径分散系数/级配Key words
highway engineering/ granular masses/ continuous distribution model/ segregation/ diameter distribution index/ gradation分类
交通运输引用本文复制引用
包秀宁,张肖宁,吴旷怀,李燕枫..级配对矿质颗粒体离析的影响研究及应用[J].中山大学学报（自然科学版）,2009,48(6):48-53,6.基金项目
国家西部交通建设科技资助项目(200431800004) （200431800004）
