集料对透水沥青混合料空隙率的影响  

Influence of Aggregate on Porosity of Permeable Asphalt Mixture

作　　者：吴金荣[1] 马芹永[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《材料科学与工程学报》2015年第2期279-282,共4页Journal of Materials Science and Engineering

基　　金：安徽省高校省级自然科学研究资助项目(KJ2013A082)

摘　　要：为了保证透水沥青混合料具有良好的排水性能,采用体积法研究了粗、细集料对透水沥青混合料空隙率的影响程度和变化规律。研究结果表明,当2.36mm筛孔通过质量百分率由12%逐渐增加到21%时,透水沥青混合料空隙率逐渐减小,在12%时达到最大值17.9%;当4.75mm筛孔通过质量百分率由12%逐渐增加到24%时,透水沥青混合料空隙率先增大后减小,说明4.75mm筛孔通过质量百分率存在最佳值,为15%,此时空隙率达到最大值19.7%。2.36mm、4.75mm筛孔通过质量百分率对透水沥青混合料空隙率有着重要的影响。矿料间隙率和有效沥青饱和度也可以用来表征透水沥青混合料的体积特征。In order to ensure good drainage performance of permeable asphalt mixture, the change law and the influence of the coarse and fine aggregate on porosity of permeable asphalt mixture were investigated by volume method. Test results show that when 2.36mm sieve passing quality percentage gradually increases from 12% to 21%, porosity of permeable asphalt mixture gradually decrease from its maximam value of 17.9% at 12%. But when 4.75mm sieve passing quality percentage gradually increases from 12% to 24%, porosity of permeable asphalt mixture increases firstly and then declines, which shows an optimum 4. 75mm sieve passing quality percentage, 15%, in this case porosity of permeable asphalt mixture achieves its maximum value, 19.7%. 2.36mm and 4.75mm sieve quality percentage have an important influence on porosity of permeable asphalt mixture. Moreover clearance rate between mineral aggregate and effective asphalt saturation can also be used to represent the volume characteristic of permeable asphalt mixture.

关 键 词：透水沥青混合料 集料 空隙率 通过质量百分率 体积法 

分 类 号：U414[交通运输工程—道路与铁道工程]