SMA混合料中粗、细集料临界比例用量的研究

Coarse、fine aggregate content of critical proportion of Stone Mastic Asphalt mixture

碎石骨架是SMA混合料的标志。粗集料间隙率VCADRC与粗集料相对含量有关。细集料含量对混合料的骨架间隙率VCAmix和性能有显著影响。细料过多，将会发生“干涉"，使骨架减弱。

The skeleton of crushed stone is marker about SMA mixture.The clearance percetage (VCADRC) depends on relative conten of coarse aggregate.The fine aggregate content has signification influence with the clearance percentage (VCAmix) and performance of SMA mixture.If fine stuff is more,interference will occur and the skeleton of crushed stone will be softening.