级配组成对排水性混合料空隙率影响研究  

Research on Influence of Gradation to Air Void of Porous Asphalt Mixture

作　　者：邢明亮[1] 陈拴发[1] 陈华鑫[1] 王秉纲[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,西安710064

出　　处：《武汉理工大学学报》2009年第17期62-65,共4页Journal of Wuhan University of Technology

基　　金：深圳市建筑工务署科技项目(SZCG2006024730);浙江省交通厅科技项目(2007H16)

摘　　要：空隙率是排水沥青混合料的主要控制指标,而矿料级配组成是影响排水性沥青混合料空隙率的首要因素。该文通过回归计算,分析了级配组成中不同筛孔通过率对其空隙率的影响程度次序,并结合满足排水性要求所需要的最小空隙率及混合料的强度,推荐出级配范围。研究表明:2.36 mm筛孔通过率是影响排水性混合料空隙率和连通空隙率的关键筛孔,在推荐级配范围内2.36 mm筛孔通过率每增加1%,空隙率将随之减小1%左右,同时空隙率与连通空隙率之间存在良好的相关性。Air void is the control index of porous asphalt mixture. However, gradation composition is the key factor which influences the air void in porous asphalt mixture. This paper analyzes the influence degree order of different percentage passing the sieves to air void by regression calculation. And recommendatory range of gradation is put forward based on satisfied with the need of drainage and intensity of mixture. This research discovers that the percentage passing 2.36 mm sieve is the most important to influence the air void and effective air void in the mixture. The result indicates that the air void would reduce with the percentage passing 2.36 mm sieve increasing. At the same time, a good relationship is discovered to exist between air void and effective air void.

关 键 词：道路工程 排水性沥青混合料 空隙率 筛孔通过率 相关关系 

分 类 号：U416.217[交通运输工程—道路与铁道工程]