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A Study on Gradation Design of Fine Particle SMA
Author(s): 
Pages: 171-177
Year: Issue:  5
Journal: Highway

Keyword:  细粒式SMA体积指标粗细集料分界级配设计;
Abstract: 针对目前规范中缺少细粒式SMA-5的级配设计,分别以2.36 mm和1.18 mm作为粗细集料分界筛孔,分析了SMA-5的体积指标参数特性;通过体积指标特性分析和路用性能试验,确定了SMA-5级配的粗细集料控制筛孔及通过率;结果证明马歇尔稳定度与流值不适合作为SMA配合比设计的关键控制指标,矿料间隙率、VMA及VCAmix受级配变化的影响大于受沥青用量的影响,VCA(DRC)值随着级配的增粗略微增...
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